MFN: 14 65: 19861000 1: SID/SCD 2: 8808 3: INPE-8808-TDI/4529 4: ETES 5: MC 6: am 10: Rios Neto, Atair 10: Varotto, SebastiÆo E.C. 10: Ferraresi, V.A 12: A proposal for the attitude determination of the MECB remote sensing satellite 14: 156-165 21: v.3 Space Science and Tchnology and Plasma Physics 40: En 41: En 42: 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 aug. <1988> 56: SÆo Jos‚ dos Campos 58: ETE 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: MissÆo Espacial Completa Brasileira 87: MECB 87: controle de atitude 87: filtros de Kalman 87: medi‡Æo 87: sensores 88: satellites 88: attitude control 88: Kalman filters 88: measurement 88: sensors 83: Sun acquisition and Earth acquisition will be done by directly using the measurements of sensors, during the initial mission phases of the MECB remote sensing satellite. However,during the nominal fine pointing , the orbit transfer and the orbit correction modes, attitude will be determined using state estimation. Mission specifications require pointing errors of the order of 1.0§ in the three -axis (3o)and residual velocities of 3.0 E-3§/s in roll and pitch and 5.0 E-3§/s in yaw (3o) MFN: 37 65: 19860700 1: SID/SCD 2: 9106 3: INPE-9106-PRE/4781 4: MET 5: S 6: as 10: Kayano, Mary Toshie 10: Vadlamudi, Brahmananda Rao 10: Moura, Antonio Divino 12: Tropical circulation and the associated rainfall anomalies during 2 contrasting years 14: 477-488 30: Journal of Climatology 31: 8 32: 5 40: En 41: En 42: 58: LMO 64: Oct. <1988> 68: PRE MFN: 38 65: 19871000 1: SID/SCD 2: 4406 3: INPE-4406-TDL/303 4: COMP 5: T 6: m 7: [07] 16: Felgueiras, Carlos Alberto 18: Desenvolvimento de um sistema de modelagem digital de terreno para microcomputadores 20: 243 40: Pt 41: Pt 41: En 42: E 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 58: DPI 59: CAP 62: INPE 64: out. <1987> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: GEOPROCESSAMENTO 87: MODELAGEM 87: MODELOS NUMERICOS DE TERRENO 87: SGI 87: SISTEMAS DE INFORMACAO GEOGRAFICA 87: SIG 88: GEOGRAPHIC INFORMATION SYSTEMS 88: TERRAIN ANALYSIS 80: BR 83: Este trabalho descreve os aspectos teoricos e de implementacao de um sistema de Modelagem Digital de Terreno, MDT, para ser executado em microcomputadores. Esse sistema esta integrado a um Sistema Geografico de Informacoes que permite combinar os dados do MDTs com mapas tematicos, imagens de satelite e outras informacoes pictoricas, para obter mapeamentos derivados 91: FDB-19900125 92: FDB-AGMR 92: M 101: D 110: 1 111: Evaldo G.M. Cesar 112: SUDAM/CHSRA 120: D 113: 18.05.94 MFN: 128 65: 19840200 1: SID/SCD 4: MET 5: S 6: as 10: Sa, Leonado D.D. 10: Viswanadaham, Y. 10: Manzi, Antonio Ocimar 12: Energy flux partitioning over the Amazon Forest 14: 1-16 30: Theoretical and Applied Climatology 31: 39 32: 1 40: En 41: En 42: 58: LMO 61: 64: <1988> 68: PRE MFN: 190 65: 19870500 1: SID/SCD 2: 4172 3: INPE-4172-TDL/272 4: COMP 5: T 6: m 7: [07] 16: Oliveira, Misae Odo Bueno de 18: Aquisicao de tratamento de dados para um Sistema Geografico de Informacoes 20: 77 40: Pt 41: Pt 41: En 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 58: DPI 59: CAP 62: INPE 64: maio <1987> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: COMPUTACAO APLICADA 87: COMPUTACAO GRAFICA 87: MAPAS TEMATICOS 87: SISTEMAS DE INFORMACAO GEOGRAFICA 87: SGI 87: SIG 88: GEOGRAPHIC INFORMATION SYSTEMS 88: IMAGE PROCESSING 88: COMPUTER GRAPHICS 80: BR 83: Este trabalho apresenta um metodo para digitalizacao e tratamento de mapas tematicos a ser integrado num sistema maior, o Sistema Geografico de Informacoes (SGI). O presente sistema esta sendo desenvolvido em equipamentos convencionais, utilizando ferramentas de computacao grafica . Sao apresentados as diversas fases do sistema, bem como a descricao dos algoritmos nessas fases 91: FDB-19900113 92: FDB-MLR MFN: 195 65: 19881100 1: SID/SCD 2: 4734 3: INPE-4734-TDL/345 4: COMP 5: T 6: m 7: [07] 16: Bins, Leonardo Sant'Anna 18: Uso de casamento estrutural para registro de imagens de satelite 20: 106 40: Pt 41: Pt 41: En 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: Banca: Nelson Delfino d'Avila Mascarenhas; Flavio Roberto Dias Velasco (orientador); Marcio Luiz Andrade Netto; Joao Marques de Carvalho. 59: CAP 62: INPE 64: nov. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: PROCESSAMENTO DIGITAL DE IMAGENS 87: IMAGENS DE SATELITES 87: SGI 87: SISTEMAS DE INFORMACAO GEOGRAFICA 87: CASAMENTO DE IMAGENS 87: REGISTRO DE IMAGENS 87: CORRECAO GEOMETRICA 87: CORRECAO RADIOMETRICA 87: SIG 88: GEOGRAPHIC INFORMATION SYSTEMS 88: ARTIFICIAL INTELLIGENCE 88: SATELLITE IMAGERY 88: GIS 80: BR 83: Tradicionalmente, o registro de imagens de satelite esta baseado no uso de metodos de correlacao. Um problema inerente destes metodos e que eles sao sensiveis as transformacoes geometricas e radiometricas. Nesta dissertacao e estudada uma classe de metodos os quais nao sao sensiveis a uma grande classe de transformacoes geometricas e radiometricas: o casamento estrutural. Ao inves de registrar duas imagens intensidades, o casamento estrutural registra as descricoes simbolicas de nivel intermediario da visao das imagens. Tambem e proposto um metodo de casamento estrutural que usa tecnicas de relaxacao. O metodo consiste dos seguintes passos. Primeiro, as imagens sao segmentadas e os objetos extraidos sao representados usando atributos tais como: descritores de forma e de tonalidades de cinza. Para cada imagem as relacoes espaciais entre os objetos e computada e uma descricao na forma de grafos direcionados obtida. Um grafo de associacao e gerado a partir das possiveis correspondencias entre nodos e entre arcos das duas descricoes. O melhor casamento entre as estruturas e computado usando tecnicas de relaxacao. Atraves de uma escolha apropriada dos atributos e das relacoes espaciais o casamento pode ser achado ainda que em presenca de distorcoes geometricas e radiometricas entre as imagens. Esta dissertacao mostra alguns experimentos como o metodo proposto em imagens de satelite e imagem com mapa 91: FDB-19900314 92: FDB-AGMR 92: MHM MFN: 199 65: 19880800 1: SID/SCD 2: 4638 3: INPE-4638-TDL/337 4: COMP 5: T 6: m 7: [07] 16: Monteiro, Antonio Miguel Vieira 18: Processamento de imagens de satelite usando estruturas simbolicas do baixo nivel da visao 20: 120 40: Pt 41: Pt 41: En 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 58: DPI 59: CAP 62: INPE 64: ago. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: PROCESSAMENTO DIGITAL DE IMAGENS 87: PROCESSAMENTO DE IMAGENS 87: IMAGENS DE SATELITES 88: VISUAL INTERPRETATION TECHNIQUES 88: IMAGE PROCESSING 88: SATELLITES IMAGERY 80: BR 83: No processamento automatico de imagens de satelites, tarefas como a segmentacao das imagens em regioes significativas, e mesmo a classificacao das cenas, tem sido tradicionalmente executadas, usando como entrada a imagem "bruta" gerada pelos satelites (ja consideradas a restauracao e operacoes de eliminacao de ruidos). Os resultados obtidos, em muitos casos, nao tem sido muito precisos, especialmente quando comparados com a eficiencia de fotointerpretes (humanos)para as mesmas tarefas. Os "ganhos" em resolucao espacial dos satelites mais recentes tem aumentado ainda mais o problema. O proposito desta dissertacao, e a adocao de modelos correntes de percepcao visual humana como paradigma de organizacao para sistemas de processamento de imagens de satelites. Em particular, usamos o ESBOCO PRIMARIO ("PRIMAL SKETCH"), como definido por David Marr, para que seja o ponto inicial para as tarefas de processamento. Esta dissertacao mostra alguns experimentos usando o ESBOCO PRIMARIO para executar segmentacao em imagens de satelites, discriminacao de texturas e aplicado ao mapeamento geologico de regioes 91: FDB-19900314 92: FDB-AGMR 92: MHM MFN: 401 65: 19870800 1: SID/SCD 2: 4311 3: INPE-4311-TDL/278 4: COMP 5: T 6: m 7: [07] 16: Barrera, Junior 18: Uma abordagem unificada para os problemas de processamento digital de imagens: a morfologia matematica 20: 175 40: Pt 41: Pt 41: En 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: Banca: Luiz Alberto Vieira Dias; Nelson Delfino d'Avila Mascarenhas (orientador); Normonds Alens; Flavio Roberto Dias Velasco; Valter Rodrigues. 59: CAP 62: INPE 64: ago. <1987> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: MORFOLOGIA MATEMATICA 87: IMAGENS DIGITAIS 88: DIGITAL PROCESSING AND CORRECTION 88: IMAGE PROCESSING 88: MATHEMATICAL MORPHOLOGY 88: DIGITAL IMAGE 80: BR 83: Esta dissertacao apresenta uma ferramenta matematica, baseada na teoria de conjuntos, que e util para resolver muitos problemas em processamento de imagens: a Morfologia Matematica. De fato esta ferramenta se constitui em uma abordagem unificada para lidar com problemas de processamento de imagens de naturezas distintas (restauracao, segmentacao, analise, codificacao, et.)que ate entao eram tratados por algoritmos especificos. Esta dissertacao tambem apresenta um sistema computacional, desenvolvido no INPE, baseado em operacoes da Morfologia Matematica e alguns problemas de processamento de imagens resolvidos neste sistema 91: FDB-19900423 92: FDB-MLR 92: MHM MFN: 407 65: 19890800 1: SID/SCD 2: 4888 3: INPE-4888-TDL/379 4: COMP 5: T 6: m 7: [07] 16: Andrade, Valeria Maria Barros de 18: Classificacao de imagens de alta resolucao usando atributos de textura 20: 102 40: Pt 41: Pt 41: En 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 59: CAP 62: INPE 64: ago. <1989> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: COMPUTACAO APLICADA 87: CLASSIFICACAO DIGITAL 87: PROCESSAMENTO DIGITAL DE IMAGENS 87: CLASSIFICACAO DE TEXTURAS 87: CLASSIFICACAO DE IMAGENS 87: RESOLUCAO ESPACIAL 88: DIGITAL PROCESSING AND CORRECTION 88: DIGITAL CLASSIFICATION 88: IMAGE PROCESSING 88: TEXTURES 88: IMAGE CLASSIFICATION 88: SPATIAL RESOLUTION 80: BR 82: 83: A maioria dos classificadores atualmente utilizados na analise de imagens usam apenas as caracteristicas espectrais para diferenciar as classes. Esses classificadores foram originalmente desenvolvidos para analise de dados Landsat-MSS. Com o surgimento de novos sensores de variadas resolucoes especiais, e necessaria a revisao dos metodos de classificacao. Estudos a respeito da influencia da resolucao na classificacao apontam dois fatores responsaveis pelo desempenho de classificacao: os pixels misturados e o "ruido de cena". Da presenca do ruido de cena decorre o aparecimento de uma caracteristica adicional na imagem, a textura. Na primeira parte deste trabalho, e feita uma avaliacao do desempenho de classificacao em funcao da resolucao espacial. E verificado um decrescimo da confusao media na classificacao a medida que a resolucao diminui. No entanto, nas imagens de baixa resolucao, observa-se bem, devido ao aumento dos pixels misturados, o aumento da abstencao media. Na segunda parte, sao propostas algumas medidas (ou atributos)de textura, que podem ser extraidas de pequenas janelas de imagem. Extraindo-se atributos de textura para cada pixel, sao geradas "bandas de textura". As vinte "bandas de textura" propostas sao analisadas visualmente e estatisticamente numa imagem da regiao urbana de Sao Jose dos Campos. A partir desta analise duas "bandas de textura" foram selecionadas e usadas na classificacao daquela imagem. E verificada uma melhoria no desempenho de classificacao no sentido de que se observa um decrescimo na confusao media, sem um real acrescimo na abstencao 91: FDB-19900424 92: FDB-MLR 92: MHM 101: D MFN: 410 65: 19891000 1: SID/SCD 2: 5001 3: INPE-5001-TDL/395 4: COMP 5: T 6: m 7: [07] 16: Machado e Silva, Antonio Jose Ferreira 18: Modelos de correcao geometrica para imagens HRV - SPOT 20: 239 40: Pt 41: Pt 41: En 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 58: DPI 59: CAP 62: INPE 64: <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: PROCESSAMENTO DIGITAL DE IMAGENS 87: CORRECAO GEOMETRICA 87: SPOT (SATELITE FRANCES) 80: BR 83: A correcao geometrica apresenta-se como uma ferramenta extremamente importante nas diversas aplicacoes de Sensoriamento Remoto. Por este motivo, ela deve incluir o rol das tarefas que compoem o pre-processamento de imagens. A literatura apresenta diversos modelos matematicos para este fim, bem como modelos para refinar a correcao geometrica. Esta dissertacao busca apresentar, analisar e comparar alguns metodos de correcao geometrica, procurando estudar a relacao entre custos computacionais e precisao alcancados. Alguns criterios de avaliacao geometrica sao discutidos, por se tratar do instrumento pelo qual e possivel comprovar a excelencia ou nao dos modelos adotados 91: FDB-19900423 92: FDB-MLR 92: MHM MFN: 707 65: 19891100 1: SID/SCD 2: 10003 3: INPE-10003-PRE/5561 4: MET 5: S 6: as 7: [07] 10: Richey, J.E. 10: Nobre, Carlos Afonso 10: Deser, C 12: Amazon river discharge and climate variability: 1903 to 1985 14: 101-103 30: Science 31: 246 32: 4926 40: En 41: En 42: 58: CPT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19900525 92: FDB-MLR 92: MHM 101: D MFN: 767 1: SID/SCD 2: 8799 3: INPE-8799-PRE/4520 4: ETES 5: MC 6: am 7: [07] 10: Alonso, J.D.D. 10: Paula Jr., Alderico Rodrigues de 10: Caliman, J.C. 10: Arias, R 12: The on-board computer software for the 1st Brazilian satellite 14: 165-169 38: v.3 Space Science and Technology and Plasma Physics 42: > 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: SÆo Jos‚ dos Campos 58: ETE 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: computadores embarcados no espa‡o 87: tolerƒncia a falha 87: processamento distribuido 87: programas de aplica‡Æo (computadores) 87: comunica‡Æo terra-ar-terra 87: aquisi‡Æo de dados 88: airborne/spaceborne computers 88: fault tolerance 88: distributed processing 88: applications programs (computers) 88: ground-air-ground communication 88: data acquisition 83: The On-Board Computers (OBC)for the Brazilian Complete Space Mission (MECB)are based on INPE's On-Board Supervision Standard (PISB)which defines a fault tolerant distributed processing system organized in two hierarchical layers. The high level processing units (Masters)are utilized for the whole satellite supervision as well for the communication with the Ground Segment; the low level processing units (Slaves)are dedicated to specific subsystems. The processing units are interconnected by a set of redundant serial buses MFN: 801 65: 19900400 1: SID/SCD 2: 5067 3: INPE-5067-TDL/406 4: COMP 5: T 6: m 7: [07] 16: Dutra, Luciano Vieira 18: Classificacao de texturas usando modelos ARMA e distancias da funcao de autocorrelacao 19: Texture classification using ARMA models and autocorrelation function distances 20: 162 40: Pt 41: Pt 41: En 42: 50: Instituto de Pesquisas Espaciais 51: Doutor 58: Banca: Ivan Jelinek Kantor; Nelson Delfino d'Avila Mascarenhas (orientador); Gerald Jean Francis Banon (orientador); Fernando Toshinori Sakane; Jacques Szczupak; Osamu Saotome. 59: CAP 62: INPE 64: <1989> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTATISTICA 87: PROCESSAMENTO DE IMAGENS 87: MODELOS ESTATISTICOS 88: MATHEMATICAL AND STATISTICAL ANALYSIS 88: IMAGE PROCESSING 88: STATISTICAL MODEL 83: Com o aumento da resolucao das imagens de satelite de recursos terrestres, a informacao de textura torna-se cada vesz mais importante como auxilio na detecao e medidas dos objetos presentes nessas imagens. Neste trabalho e proposto um metodo para descrever e classificar texturas baseado em modelos autorregrassivos e de media movel (ARMA)bidimencionais. Esses modelo sao derivados de modelos unidimensionais estimados sobre series unidimensionais obtidas pela concatenacao de linhas ou colunas da imagem e filtradas pelos filtros derivados desses, gerando tantos canais quantos forem as classes de texturas. Considera-se a distribuicao conjunta das saidas dos filtros para cada classe. A imagem e classificada ponto a ponto usando um classificador de maxima versossimilhanca, ou por amostras (conjunto conectado de pixels)usando os criterios de distancia JM, de maxima verossimilhanca amostral ou maioria. E proposto tambem um novo classificador de amostras baseado em distancias da funcao de autocorrelacao bidimensional. Os metodos foram testados usando imagens de radar de abertura sintetica, do livro de Brodatz e imagens SPOT pancromaticas. Os modelos para as classes definidas foram apresentados e discutidos. Os resultados das classificacoes mostraram substancial melhoria no desempenho medio (uma estimativa para a probabilidade de erro), principalmente para os casos onde a diferenca entre a media das classes e pequena. Foi observado tambem um bom desempenho quando se usa o classificfador de amostras baseado em distancia entre disdistribuicoes 91: FDB/1990/07/23 92: FDB-MLR MFN: 1117 1: SID/SCD 4: ETES 5: MC 6: am 7: [07] 10: Rayalu, Govindaraju Krisnna 10: Lopes Filho, Antonio 10: Siqueira, Marcus Antonio 12: Estudo conceitual de um espectro-radiometro imageador (ERI)programavelo para uso em aeronave ou satelite 18: Anais 40: Pt 41: Pt 41: En 42: 52: SBPC 53: Reuniao Anual da Sociedade Brasileira para o Progresso da Ciencia 54: <1987> 55: 19870000 56: Brasilia 57: BR 58: ETE 61: 64: <1987> 68: PRE 90: b 83: Com o uso de detetores CCD de area (por exemplo Thompson TH 7861 CD, de 288 linhas por 384 colunas)e possivel formar simultaneamente 288 imagens de uma cena sobrevoada em canais espectrais distintos. E tambem possivel escolher uma ou mais faixas espectrais, programado a soma dos sinais registrados em um numero qualquer de canais. Foi realizado em estudo dos principais parametros oticos, fisicos e eletronicos de um instrumento deste tipo, denominado espectro-radiometro imageador programavel, dimensionado levando em conta restricoes de peso, volume e taxa de dados impostas aos satelites de sensoriamneto remoto previstos na Missao Espacial Completa Brasileira. Numa orbita de 600km de altura a resolucao no solo e otimizada na faixa de 200 a 500m. este instrumento se adapta a uma variedade de estudos da variacao na aradinca espectral de alvos naturais 91: FDB-19920225 92: FDB-MLR MFN: 1118 1: SID/SCD 4: ETES 5: MC 6: am 7: [07] 10: Rayalu, Govindaraju Krisnna 10: Ranvaud, Ronald 10: Lopes Filho, Antonio 10: Siqueira, Marcus Antonio 10: Oyama, Kunio 10: Joffre Neto, Joaquim M. 12: Instrumentos imageadores grandeangulares para a observacao da terra 18: Anais 40: Pt 41: Pt 41: En 42: 52: SBPC 53: Reuniao Anual da Sociedade Brasileira para o Progresso da Ciencia 54: jul. <1988> 55: 19880000 56: Sao Paulo 57: BR 58: DTE 61: 64: <1988> 68: PRE 90: b 83: No sensoriamento remoto de alvos terrestres utilizando satelites artificiais ou aeronaves, existem diversas circunstancia em que e vantajoso o uso de sistemas opticos de grande campo de visada. Apesar da menor resolucao em geral atingida, uma objetiva optica grandeangular permite o imageamento de uma larga faixa do terreno sobrevoado, fazendo com que em baixas altitudes seja possivel simular imagens orbitais, e em nivel orbital seja viavel uma cabertura completa do globo terrestre num tempo curto. Neste contexto pode-se calcular facilmente que para um periodo de cobertura total da Terra de 4 dias (considerado desejavel por usuarios em varias areas)com um satelite em orbita baixa, como planejado na MECB (Missao Espacial Completa Brasileira), e necessario um campo de visada de 60o (+-30o em relacao ao Nadir). Varios projetos opticos foram estudados, para aplicacao numa camera de uso espacial, contendo em seu plano focal um detector CCD. E extremamente dificil atingir um desenpenho optico satisfatorio em todo o campo imageado. O circulo de confusao (Blur Circle)devido as varias aberracoes, deveria idealmente ter um diametro, d, que se aproxima do limite de difracao (d=2.44.A.F/No, onde A e o comprimento de onda e F/No e a razao focal)e do tamanho dos elementos do detetor CCD(-13 micrometros). Uma solucao deste problema para atender a MECB consiste no uso de multiplas objetivas 91: FDB-19920225 92: FDB-MLR MFN: 1351 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Stevenson, Merritt Raymond 10: Stech, Jose Luiz 12: Surface circulation in the Belingshausen Sea estimated from satellite-tracked drifting buoys 14: 263-264 18: Proceedings 40: En 41: En 42: 52: American Meteorological Society 53: International Conference on Southern Hemisphere Meteorology and Oceanography, 3 54: 13-17 Nov. <1989> 55: 19890000 56: Buenos Aires 57: AR 58: DCT 61: 64: <1989> 68: PRE 90: b 91: FDB-19920310 92: FDB-MLR MFN: 1355 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Stech, Jose Luiz 10: Lorenzzetti, Joao Antonio 12: On the use of a numerical oceanic model to study vorticity and momentun balance of the southeast continental shelf of Brazil 14: 299-300 40: En 41: En 42: 53: International Conference on Southern Hemisphere Meteorology and Oceanography, 3 54: 13-17 Nov. <1989> 55: 19890000 56: Buenos Aires 57: AR 58: DCT 61: 64: <1989> 68: PRE 90: b 91: FDB-19920310 92: FDB-MLR MFN: 1377 1: SID/SCD 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Valter Johann Heinrich 10: Setzer, Alberto Waingort 10: Pereira, Marcos da Costa 10: Marinho, Edith Vasconcellos de Andrade 12: Queimadas no Brasil e seus efeitos na atmosfera de regioes remotas 14: 659-668 30: Ciencia e Cultura 31: 40 32: 7 40: Pt 41: Pt 42: 58: DGE 58: DSR 58: CEA 61: 64: <1988> 68: PRE 90: PRE 71: b 76: GEOFÖSICA ESPACIAL 87: QUEIMADAS 83: Nos paises tropicais e comum a pratica de queima de mat derrubada para criar areas de plantio e pastagens. E a maneira mais facil e economica de remover troncos, galhos e folhagens "inuteis". Nos ultimos anos, no entanto, a queima de fitomassa, no Brasil, aumentou tanto que comeca causar serios prejuizos. O excesso de queimadas empobrece o solo, provoca casos, provoca casos de fechamento de aeroportos, e a falta de controle leva ainda a queima de lavouras e madeiras de lei nas florestas. Alem destes prejuizos obvios produz quantidades indesejaveis de gases CO e NOx, que por sua vez podem produzir O3, aumentando a taxa de gases toxicos na baixa troposfera que prejudicam a saude de homens e animais e inibem o bom desenvolvimento das lavouras. E nossa tese que as queimadas se tornaram uma verdadeira praga, cuja extensao e intensidade estao muito alem de limites razoaveis. Nao se queimam apenas vegetacao cortada e seca. E comum, tambem, a ocorrencia de queimadas em areas de vegetacao viva, o que se comprova em viagens de aviao por rodovias pelo Brasil. Para estudar cientificamente estes problemas sao feitas as amostragens de ar em local onde ha grande incidencia de queimadas, proximo a Cuiaba, MT. Mede-se a concentracao de C), simultaneamente com O3. A concentracao de CO em julho-agosto e da ordem de 500 partes por bilhao por volume, ppbv, mas de grande oscilaoes com valores ate 700 ppbv, e na epoca chuvosa, em janeiro e apenas 100 ppbv. as concentracao elevadas sao investigadas tambem em funcao da identificacao, atraves de imagens de satelite, de um grande numero de queimadas no norte de Mato Grosso, Rondonia de sul do Para, e tambem da analise meteorologica das trajetorias de massas de ar das regioes de queimadas para o local de mostragem 91: FDB-19920312 92: FDB-MLR MFN: 1890 1: SID/SCD 2: 1425 3: INPE-1425-RPQ 4: CEA 5: S 6: as 10: Gonzalez-Alarcon, Valter Dem‚trio 10: Gonzalez, Alicia Luisa Clua 12: Periodicitties in the interplanetary magnetic field polarity 14: 4357-4375 30: Journal geophysical Research 31: 92 32: : 40: En 41: En 42: 58: DGE 59: ASTRO 61: 64: <1987> 68: PRE 76: GEOFÖSICA ESPACIAL 91: 7902 MFN: 2583 30: Monthly Weather Review 31: 115 32: 8 40: En 41: En 42: 58: CPT 59: TECLIM/MASC 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D 1: SID/SCD 2: 3566 3: INPE-3566-PRE/711 4: MET 5: S 6: as 7: [07]55.513(8) 10: Silva Dias, Pedro Leite 10: Bonatti, Jose Paulo 10: Kousky, Vernon Edgar 12: Diurnally forced tropical tropospheric circulation over South America 14: 1465-1478 MFN: 2592 1: SID/SCD 2: 3603 3: INPE-3603-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walter Demetrio 12: X-ray measurements at the South Atlantic magnetic anomaly 14: 7072-7078 30: Jornal Geophysical Research A 31: 91 32: 6 40: En 41: En 42: 53: AGU Fall Meeting 54: Dec. <1987> 56: San Francisco 57: USA 58: DGE 59: PESQUISA DE MAGNETOSFERA 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 87: MAGNETOSFERA 87: ANOMALIAS MAGNETICA 82: 91: FDB - 19980826 92: FDB - EGCF MFN: 2615 1: SID/SCD 2: 3692 3: INPE-3692-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Gonzalez-Alarcon, Walter Demetrio 10: Dutra, Severino Luiz Guimaraes 10: Pinto Jr., Osmar 12: Midle atmospheric electrodynamic modification by particle precipitation at the South Atlantic Magnetic Anomaly 14: 377-383 30: Journal of Atmospheric and Terrestrial Physics 31: 49 32: 4 40: En 41: En 42: 58: DGE 59: PESQUISA DE MAGNETOSFERA 62: INPE 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 82: 83: Evidence for a localized middle atmospheric electrodynamic modification at low latitudes (southern Brazilian coast)of the South Atlantic Magnetic Anomaly (SAMA), in association with enhanced geomagnetic activity, are presented in a unified way combining recent observational efforts and related numerical studies. They involve a distortion effect in the fair weather electric field at balloon altitudes. This effect is attributed to a local intensification of energetic electron precipitation through a related middle atmospheric ionization enhancement and is elucidated by numeric simulation. From the electric field measurements and the numeric simulation, the intensification of precipitation is considered to occur in fairly narrow regions at the observed low L values (around L = 1.13)of the SAMA, with horizontal extensions of the order of a few hundred kilometers. A physical mechanism that could be responsible for this sort of intensification is suggested. Furthermore, a comparison of the phenomenon of middle atmospheric clectrodynamic modification at the SAMA with a similar one at auroral latitudes, in response to enhanced solar and geomagnetic activity, is also given 91: FDB - 19980827 92: FDB - EGCF MFN: 2622 1: SID/SCD 2: 3717 3: INPE-3717-PRE/ 4: CEA 5: MP 6: m 7: [07] 16: Kane, Rajaram Purushotam 18: Periodicities in the all india rainfall series and in the drought and flood area indices 40: En 41: En 42: 58: DGE 62: INPE 64: ago.<1987> 66: Sao Jose dos Campos 68: RPQ 76: GEOFISICA ESPACIAL 91: FDB - 19980827 92: FDB - EGCF MFN: 2625 1: SID/SCD 2: 3725 3: INPE-3725-RPQ 4: CEA 5: MP 6: m 7: [07] 16: Marinho, Edith Vasconcellos de Andrade 16: Nordemann, Daniel Jean Roger 18: Medidas de P0214 em Sao Jose dos Campos e Cachoeira Paulista: Correlacao com Dados Meteorologicos 20: 32 40: Pt 41: Pt 42: 58: DGE 59: GEONUC 61: RPQ 62: INPE 64: jan.<1988> 66: Sao Jose dos Campos 68: RPQ 76: GEOFISICA ESPACIAL 91: FDB - 19980827 92: FDB - EGCF MFN: 2637 1: SID/scd 2: 3755 3: INPE-3755-PRE 4: CEA 5: S 6: AS 7: [07] 10: Kane, Rajaram Purushotam 12: Prediction possibilities of arosa total ozone 14: 131-145 30: Pure and Applied Geophysics 31: 125 32: 1 40: En 41: En 42: 58: DGE 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 87: OZONIO 87: PERIODICIDADE 83: Abstract-Using the periodicities obtained by a Maximum Entropy Spectral Analysis (MESA)( Arosa total ozone data (CC')series for 1932-1971, the values predicted for 1972 onwards were comPARED with the observed values of the (AD)series. A change of level was noticed, with the observed (AD) 83: lower by about 7 D.U. Also, the matching was poor in 1980,1981,1982. In the monthly values, the prominent periodicity was the annual wave, comprising some 80 83: variance. In the 12 month ru averages, the annual wave was eliminated and the most prominent periodicity was T = 3. 7 years, encompassing roundly 20 83: variance. This and other periodicities at T = 4.7, 5.4, 6.2, 10 and 16 were all statistically significant at a 3.5 a priori i.e., 2 a posteriori level. However, the pred from these were unsatisfactory, probably because some of these periodicities may be transie changing amplitudes and/or phases with time. Thus, no meaningful predictions seem possible for total ozone 91: FDB20000201 92: FDB-MLR MFN: 2643 1: SID/SCD 2: 3788 3: INPE-3788-RPQ/ 4: CEA 5: MP 6: m 7: [07] 16: Zamlutti, Carlos Jose 18: A Theory for Classified Quantities 20: 18 40: En 41: En 42: 58: DAE 59: PESQUISA DA IONOSFERA 62: INPE 64: out.<1987> 66: Sao Jose dos Campos 68: RPQ 76: AERONOMIA 91: FDB - 19980828 92: FDB - EGCF MFN: 2644 1: SID/SCD 2: 3794 3: INPE-3794-PRE/889 4: MET 5: S 6: as 7: [07]551.46:551.508.825(99) 10: Stevenson, Merritt Raymond 10: Inostroza Villagra, Hector Manuel 10: Stech, Jose Luiz 10: Alonso, E.M.B 12: Variations in temperature, salinity, density and circulation in Bransfield Strait 9-14, March, 1985 14: 45-53 30: Pesquisa Antartica Brasileira 31: 1 32: 1 40: En 41: En 42: 58: DCT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921223 92: FDB-MLR 101: D MFN: 2645 1: SID/SCD 2: 3797 3: INPE-3797-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Buivan, N.A. 10: Braga, Joao 10: Jardim, Jeronimo Osvaldo Dias 10: Vedrenne, G. 12: Gamma-ray background induced in a double ge(LI)spectrometer at balloon altitudes in the southern hemisphere 14: 132-140 30: Nuclear Instruments and Methods in Physics Research 31: A258 32: 1 40: En 41: En 42: 58: DAS 59: ASTROFISICA DE ALTAS ENERGIAS 61: 64: July <1987> 68: PRE 76: ASTROFISICA 83: A double coaxial Ge(Li)spectrometer has been flown for the first time in December 1983 from the Southern Hemisphere. Despite an electronics failure which shortened the flight duration, the induced background at ceiling in the diodes can be studied. Nevertheless, the low statistics of the data requires some caution in the identification of the features of the lines. During the flight, different anticoincidence modes were operated to estimate the local production. The atmospheric 511 keV line results show that the fluxes detected by the upper diode are in good agreement with previous measurements, and, at the same time, indicate a probable contamination of the lower diode. The techniques used with a double coaxial Ge(Li)seem to demonstrate a better method to reject the induced background in the upper diode (the heart detector)than with the single Ge(Li)telescope 91: FDB - 19980828 92: FDB - EGCF MFN: 2648 1: SID/SCD 2: 3815 3: INPE-3815-PRE/898 4: MET 5: S 6: as 7: [07]551.551 10: Conforte, Jorge Conrado 10: Yelisetty, Viswanadham 12: Dissipacao turbulenta de energia na camada limite atmosferica 14: 1897-1903 30: Ciencia e Cultura 31: 38 32: 11 40: Pt 41: Pt 41: En 42: 58: DCT 59: PROSAT 61: 64: jul. <1987> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921217 92: FDB-MD 101: D MFN: 2656 1: SID/SCD 2: 3833 3: INPE-3833-PRE/905 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr., Osmar 10: Mendes Jr.,Odim 10: Gonzalez-Alarcon, Walter Demetrio 12: Dynamics of non-relativistic equatorial electrons and protons inside the plasmaphere 30: Journal of Geophysical Research 31: 92 32: 9 40: En 41: En 42: 58: DGE 59: PESQUISA DE MAGNETOSFERA 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 87: MAGNETOSFERA 83: In this paper, the trajectories of equatorial low-energy particles (electrons and protons with energies between 1 and 100 keV)inside the plasmasphere (L = 1.5-4.5)have been computed for an average quiet dynamo-electric field model that is deduced by incoherent scatter radar observations. it is concluded that electrons tend to corotate with the Earth. On the other hand, protons show a more complex dynamical behavior, strongly depending on energy and local time, presenting open orbits similar to those of electrons, except for an L-dependent energy-interval in which closed orbits are found to exist within certain local time intervals 91: FDB - 19980831 92: FDB - EGCF MFN: 2659 1: SID/SCD 2: 3846 3: INPE-3846-PRE/911 4: MET 5: S 6: as 7: [07]551.511.61 10: Franchito, Sergio Henrique 12: Um modelo quantitativo para simulacao da brisa maritima 14: 307-310 30: Geociencias 31: 7: 40: Pt 41: Pt 42: 53: Simposio Quantificacao em Geociencias, 1 54: ago. <1985> 56: Rio Claro 57: SP 58: DCT 59: PNTE 61: 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2664 1: SID/SCD 4: MET 5: S 6: as 7: [07]681.3.14 10: Di Lascio, Marco Alfredo 12: Long-term power system simulation for real-time training with a reduce size program 14: 113-118 30: IEEE T Power Syst 31: 2 32: 1 40: En 41: En 42: 53: IEE/Power Engineering Society 1986 Summer Meeting 54: 20-25 July <1986> 56: Mexico City 57: MX 58: DME 61: 64: Feb. <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MLR 101: D MFN: 2666 1: SID/SCD 2: 3872 3: INPE-3872-PRE/928 4: MET 5: S 6: as 7: [07]551.511.61:551.551.2 10: Bonatti, Jose Paulo 10: Arai, Nelson 10: Franchito, Sergio Henrique 10: Yamazaki, Yoshihiro 12: Aplicacao de um modelo numerico a camada limite planetaria 14: 304-306 30: Geociencias 31: 7: 40: Pt 41: Pt 42: 53: Simposio de Quantificacao em Geociencias, 1 54: ago. <1985> 56: Rio Claro 57: SP 58: CPT 58: DCM 59: PNTE 61: 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2675 1: SID/SCD 2: 3944 3: INPE-3944-PRE/966 4: CEA 5: S 6: as 7: [07] 10: Kane, Rajaram Purushottam 12: Longitudinal difference in the SQ profiles in the South American region 14: 439-441 30: JATP 31: 49 32: 5 40: En 41: En 42: 58: DGE 59: GEOMAGNETISMO 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 87: GEOMAGNETISMO 82: 83: The average daily variation profiles of the H component at Huancayo on the west coast and Eus‚bio, Fortaleza, on the east coast in the dip equator region and La Quiaca near the west coast and Vassouras near the east coast in the southern low latitude region of the South American continent indicate that the profiles are broader for the east coast. Thus, distortions in the overhead current systems while passing from one coast to the other are indicated 91: FDB - 19980901 92: FDB - EGCF MFN: 2679 1: SID/SCD 2: 3952 3: INPE-3952-PRE/971 4: MET 5: S 6: as 7: [07]551.513.3 10: Kayano, Mary Toshie 10: Vadlamudi, Brahmananda Rao 10: Moura, Antonio Divino 12: The walker circulation and atmospheric water vapour characteristics over pacific for two contrasting years 14: 243-251 30: Journal of Climatology 31: 9 32: 3 40: Pt 41: Pt 41: En 42: 58: DCT 58: CPT 59: PRECLI 61: 64: <1989> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921218 92: FDB-MD 101: D MFN: 2680 1: SID/SCD 2: 3954 3: INPE-3954-PRE/972 4: CEA 5: MP 6: m 7: [07] 16: Pinto Jr., Osmar 16: Gonzales-Alarcon, Walter Demetrio 16: Costa, Jos‚ Marques da 18: A survey of hard X-rays at balloon altitudes of the Earth's atmosphere 40: En 41: En 42: 58: DGE 59: PESQUISA DE MAGNETOSFERA 61: INPE 64: jul.<1988> 66: Sao Jose dos Campos 68: RPQ 76: GEOFISICA ESPACIAL 87: MAGNETOSFERA 91: FDB - 19980901 92: FDB - EGCF MFN: 2685 1: SID/SCD 2: 3971 3: INPE-3971-PRE/984 4: MET 5: S 6: as 7: [07]551.576.3 10: Bonatti, Jose Paulo 10: Vadlamudi, Brahmananda Rao 12: Moist baroclinic instability in the development of North Pacific and South American intermediate-scale disturbance 14: 2657-2667 30: Journal of the Atmospheric Science 31: 44 32: 18 40: En 41: En 42: 58: CPT 58: DCT 59: CLIMA 61: 64: Sept. <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2688 58: DCT 59: MICRA 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921218 92: FDB-MLR 101: D 1: SID/SCD 2: 3980 3: INPE-3980-PRE/990 4: MET 5: S 6: as 7: [07] 10: Sa, Leonardo Deane de Abreu 10: Yelisetty, Viswanadham 10: Manzi, Antonio Ocimar 12: Energy receipt partitioning over the Amazon Forest 14: 1-16 30: Theoretical and Applied Climatology 31: 39 32: 1 40: En 41: En 42: MFN: 2691 1: SID/SCD 2: 4007 3: INPE-4007-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Kane, Rajaram Purushottam 10: Trivedi, Nalin Babulal 12: Spectral characteristics of the annual rainfall series for nostheast Brazil 14: 317-336 30: Climate Change 31: 13 32: 3 40: En 41: En 42: 58: DGE 59: GEOMAGNETISMO 61: 64: Dec. <1988> 68: PRE 76: GEOFISICA ESPACIAL 87: GEOMAGNETISMO 82: 83: The rainfall series for Fortaleza (Cear )is compared with similar series for several other locations in Northeast Brazil. It is shown that the correlations are high for distances up to about 600 km from Fortaleza. The Fortaleza series shows prominent periodicities at T=2.1, 10.1, 12.9, 25.1, and 61.0 years, all significant at a 3 s a priori level. Amongst these, T= 12.9 and 25.1 years are significant at a 4a a priori level. A master Curve (for 1912-1978 only), obtained by averaging rainfall data for 93 stations having good correlations with Fortaleza, shows very prominent periodicities at T= 5.6, 12.3 and 47.3 years, significant at a 3 s a priori level. T= 12.3 is significant at a 4 s a priori level. Predictions from both the Fortaleza series (1849-1976)and the Master Curve (1912-1978)indicated droughts during 1979-1983. This prediction seems to have come true. In the future, droughts during 1992-1994 and 2002-2006 are indicated 91: FDB - 19980901 92: FDB - EGCF MFN: 2693 30: Meteorology and Atmodpheric Physics 31: 37: 32: 11 40: En 41: En 42: 58: CPT 58: DCT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930107 92: FDB-MLR 101: D 1: SID/SCD 2: 4010 3: INPE-4010-PRE/1002 4: MET 5: S 6: as 7: [07] 10: Vadlamudi, Brahmananda Rao 10: Bonatti, Jose Paulo 12: Om the origin of upper tropospheric cyclonic vortices in the South Atlantic Ocean and adjoinning Brazil during the Summer 14: 11-16 MFN: 2696 1: SID/SCD 2: 4018 3: INPE-4018 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 12: Surface ozone measurements in Amazonia 14: 1469-1476 30: Journal Geophysics Research 31: 93 32: 2 40: En 41: En 42: 58: DGE 59: QUIAT 61: 64: <1988> 68: PRE 76: GEOFISICA ESPACIAL 83: Surface ozone concentrations have been measured continuously for the first time, in a forest preserve area near Manaus (3§S, 60§W)during the ABLE 2A field expedition of July-August 1985. Major subjects addressed are diurnal variations and processes that might control it, both dynamic and chemical. Intense transient variations have been observed in association with showers and thunderstorms. The diurnal variations are well defined, with minimum concentrations during the night and maximum concentrations in the daytime. At night it is not uncommon to find zero O3 mixing ratios, whereas the daytime maximum of between 7 and 31 parts per billion by volume occurs around 1200-1300 LT. Below a height of 6 m a very strong O3 concentration gradient is found. On two occasions, nearby thunderstorms have caused strong abnormal enhancements of the O3 concentration 91: 8802 MFN: 2698 1: SID/SCD 2: 4027 3: INPE-4027-PRE/1007 4: MET 5: S 6: as 7: [07]551.521.14(811.3) 10: Andre, Romisio Geraldo Bouhid 10: Silva Filho, Vicente de Paula 10: Molion, Luiz Carlos Baldicero 10: Nobre, Carlos Afonso 12: Balanco de radiacao sobre a Floresta Amazonica (estacoes seca e umida) 14: 269-274 30: Revista Brasileira de Meteorologia 31: 3 32: 2 40: Pt 41: Pt 41: En 42: 58: CPT 59: MICRA 61: 64: dez. <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921217 92: FDB-MD 101: D MFN: 2702 1: SID/SCD 2: 4044 3: INPE-4044 4: CEA 5: S 6: as 10: Kane, Rajaram Purushottam 12: PREDICTION OF THE MAXIMUM ANNUAL MEAN SUNSPOT NUMBER IN THE COMING SOLAR MAXIMUM EPOCH 14: 415-416 30: Solar Physics 31: 108 32: 2 40: En 41: En 42: 58: DGE 59: GEOMA 61: 64: <1987> 68: PRE 76: GEOFÖSICA ESPACIAL 83: Using an earlier correlation analysis between the annual sunspot numbers at sunspot maximum epochs and the minimum annual aa index in the immediately preceding years, the minimum annual aa index (21.6)during 1985-86 implies a maximum annual sunspot number of about 190ñ40 in the coming solar maximum epoch, in about 1988-89 91: 8710 MFN: 2703 1: SID/SCD 2: 4045 3: INPE-4045 4: CEA 5: S 6: as 10: Kane, Rajaram Purushottam 12: SPECTRAL CHARACTERISTICS OF THE SERIES OF ANNUAL RAINFALL IN ENGLAND AND WALES 14: 77-92 30: Climatic Change 31: 12 32: 1 58: DGE 59: GEOMA 61: 64: Feb. <1988> 68: PRE 83: Despite the small size of England and Wales, the rainfall there shows large variations, possibly due to geographical and topographical conditions. Spectral analysis shows a large number of periodicities, but many are statistically insignificant, indicating considerable randomness. Significant periodicities are invariably in the low periodicity region (periodicity < 5 yr). Occasionally, high periodicities are also encountered, but are always accompanied by low periodicities. Hence, meaningful predictions are not possible 91: 8810 MFN: 2704 1: SID/SCD 2: 4046 3: INPE-4046-PR/ 4: CEA 5: S 6: as 7: [07] 10: Pinto, Iara Regina Cardoso de Almeida 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walter Demetrio 10: Dutra, Severino Luiz Guimaraes 10: Wygant, J. 10: Mozer, F.S 12: Stratospheric electric field and conductivity measurements over electrified and clouds in the South American region 14: 709-715 30: Journal Geophysical Research 31: 93 32: D1 40: En 41: En 42: 58: DGE 61: 64: <1988> 68: PRE 76: GEOFISICA ESPACIAL 87: ESTRATOSFERA 87: CAMPOS ELECTRICOS 87: NUVENS 83: In this work, stratospheric dc electric fields and conductivity measurements, associated with electrified convective clouds identified by satellite infrared imagery, are presented. These measurements were obtained at an altitude of 26 M by a balloon-borne doubleprobe detector, launched from Cachoeira Paulista (geographic coordinates 23 degrees 40'S, 45 degrees W)on April 2, 1980. The electric fields are found to correspond to electrified convective clouds with charges of the order of a few coulombs. The conductivity measurements show variations by over a factor of 2 around the average value of 4 x 10-12 mho/m. Such variations, which merit more investigation, did not show an apparent relation with the simultaneous electric field measurements. Using the vertical electric field and conductivity measurements, a current density is also estimated. Furthermore, a detailed original discussion on conductivity measurements in the atmosphere as well as a suggestion for estimating distances from the detector to the cloud, using the ratio between the magnitudes of the measured vertical and horizontal electric fields, is included. 91: FDB-2000112 92: FDB-MLR MFN: 2707 1: SID 2: 4057 3: INPE-4057-PRE 4: CEA 5: S 6: as 7: [07] 10: Clemesha, Barclay Robert 10: Takahashi, Hisao 10: Shai, Yogeshwar 12: Vehicle glow observed during a rocket souning experiment 14: 1367-1372 30: Planetary and Space Science 31: 35 32: 11 40: En 41: En 42: 58: DAE 61: 64: Nov. <1987> 68: PRE 90: b 76: AERONOMIA 83: In a recent rocket-borne photometer experiment strong contaminating signals were observed at 5577 and 7619 . The contamination was observed in the ram direction on both upleg and downleg trajectories and no contamination was observed in the wake direction. A strongly spin-modulated signal was observed at heights up to 88 km on the upleg and at heights below 78 km, where the rocket inverted, on the downleg. The signals at both wavelengths were observed to decrease exponentially with increasing height, but with different e-folding intervals, the latter being 1.23 km for the OI 5577  emission and 2.65 km for the O2 7619  . At a height of 81.5 km the intensities were the same and were equal to 220 Rayleighs per Angstrom (R -1). It is suggested that the contamination glow most probably has its origin in reactions involving atomic species produced by thermal dissociation in the shock wave in front of the photometers 91: FDB-19960314 92: FDB-MLR MFN: 2709 1: SID/SCD 2: 4059 3: INPE-4059-PRE/1018 4: MET 5: MC 6: am 7: [07]551.584.41(811.3) 10: Yelisetty, Viswanadham 10: Sa, Leonardo D. de Abreu 10: Silva Filho, Vicente de Paula 10: Manzi, Antonio O 12: Ratios of eddy transfer coefficients over the Amazon Forest 14: 365-373 21: (IAHS Publ. N.167) 40: En 41: En 42: 53: IAHS Assembly at IUGG 54: 09-22 Aug. <1987> 56: Vancouver 57: CA 58: DCT 59: MICRA 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MLR 101: D MFN: 2715 1: SID/SCD 2: 4069 3: INPE-4069-PRE/ 5: S 6: as 7: [07] 10: Kane, Rajaram Purushotam 12: Forecasting geomagnetic activity 14: 85-101 30: Pure and Applied Geophysics 31: 126 32: 1 40: En 41: En 42: 58: DGE 59: GEOMAGNETISMO 61: 64: <1988> 68: PRE 76: GEOFISICA ESPACIAL 87: GEOMAGNETISMO 88: geomagnetic activity 88: Ap indices 83: Abstract-A study of the daily, monthly and annual values of the geornagnetic activity index Ap for 1932 onwards and of the annual aa indices for 1868 onwards indicated that their variations had large random components. Long-term predictions were not possible from time-series extrapolations 91: FDB - 19980921 92: FDB - EGCF MFN: 2723 1: SID/SCD 2: 4122 3: INPE-4122-RPQ/ 4: CEA 5: MP 6: m 7: [07] 16: Mendes Jr., Odim 16: Pinto Jr., Osmar 18: Movimento de particulas carregadas na magnetosfera interna da terra 20: 14 40: Pt 41: Pt 42: 58: DGE 59: PESQUISA DE MAGNETOSFERA 62: INPE 64: fev.<1987> 68: RPQ 76: GEOFISICA ESPACIAL 87: MAGNETOSFERA 87: TERRA 91: FDB - 19980921 92: FDB - EGCF MFN: 2724 1: SID/SCD 2: 4125 3: INPE-4125-NTC/ 4: CEA 5: MP 6: m 7: [07] 16: Santos, Elisete Rinke dos 18: Relatorio dos circuitos de comandos dos transmissores, vcos e omega 20: 28 40: Pt 41: Pt 42: 58: DAS 62: INPE 64: fev.<1987> 66: Sao Jose dos Campos 68: NTC 76: ASTROFISICA 91: FDB - 19980921 92: FDB - EGCF MFN: 2726 1: SID/SCD 2: 4128 3: INPE-4128-RTR/103 4: MET 5: MP 6: m 7: [07] 16: Moliterno, Anisio Messias 18: Sistema wefax I 20: 21 40: Pt 41: Pt 41: En 42: 58: DME 59: PROSAT 62: INPE 64: fev. <1987> 66: Sao Jose dos Campos 67: BR 68: RTR 90: b 76: METEOROLOGIA 91: FDB-19930216 92: FDB-MD 101: D MFN: 2727 1: SID/SCD 2: 4139 3: INPE-4139-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Jayanthi, Udaya Bhaskaram 10: Jablonski, Francisco Jos‚ 10: Braga, Joao 12: Low-energy gamma rays from pulsar gx 1+4 balloon results 14: 183-189 30: Astrophysics and Space Science 31: 138 32: 1 40: En 41: En 42: 58: DAS 61: 64: Nov. <1987> 68: PRE 76: ASTROFISICA 87: ALTA ENERGIA 87: RAIOS GAMAS 87: BALAO 83: We present the results from a search of pulsed emission in low-energy gamma-rays from GX 1 + 4 e observed during zenith transit in a balloon experiment in April, 1982. The observed pulsar period is 120.6 + 0.2 s with pulsed emission flux of (1.3 + 0.4)x 10 -5 photons cm - 2 s -1 keV -1 at an average energy 342 keV. These pulsations, observed at gamma-ray energies perhaps for the first time from any pulsar, in conjunction with the period determined in X-rays, indicate a spin-down in contrast with in-up behaviour observed by others at earlier epochs 91: FDB - 19980921 92: FDB - EGCF MFN: 2728 1: SID/SCD 2: 4144 3: INPE-4144-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Busko, Ivo Claudio 10: Steiner, Joao Envagelista 12: Profiles of emission lines in agn part I: observarions of (OIII)lines 14: 525-538 30: Monthly Notices of the Royal Astronomical Society 31: 232 32: 3 40: En 41: En 42: 58: DAS 59: EXTRA 61: 64: June <1988> 68: PRE 76: ASTROFISICA 87: ALTA ENERGIA 83: We present high resolution (35 km.s -1)spectroscopic observations of the [OIII]4959/5007 emission lines in 13 southern active galactic nuclei. Profile parameters are presented for each object, using the characterization methods defined by Heckman et al. (1981)and Whittle (1985a), The parameters are compared with measures from other authors, obtained with different resolutions and detectors. We show also the very unusual [OIII]? 5007 prof¡le of NGC7213, with two very distinct components, a narrow one being attributable to a "classical" Narrow Line Region, and a very wide one which may originate in a region characteristic of LINERs 91: FDB - 19980924 92: FDB - EGCF MFN: 2730 1: SID/SCD 2: 4146 3: INPE-4146-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Jablonski, Francisco Jose 10: Steiner, Joao Envagelista 12: NSV 12615 - An eclipsing cataclysmic variable with ultrashort period 14: 317-376 30: Astrophysical Journal 31: 313 32: 1 Part 1 40: En 41: En 42: 58: DAS 61: 64: Feb. <1987> 68: PRE 76: ASTROFISICA 87: ALTA ENERGIA 88: headings 88: stars 88: dwarf novae 88: stars eclipsing binaries 88: stars: individual 88: stars U Geminorum 83: We report the discovery of an ultrashort binary period in the star NSV 12615 =_ S7273. The object shows deep eclipses (?m 1.2)and has a period of 88.45 minutes. We suggest that the star belongs to the SU UM subclass of dwarf novae 91: FDB - 19980925 92: FDB - EGCF MFN: 2731 1: SID/SCD 2: 4148 3: INPE-4148-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Sahai, Yogeshwar 10: Takahashi, Hisao 10: Teixeira, Nelson Rodrigues 10: Roble, R.G. 12: Thermospheric winds and temperatures observed by oi 6300 angstrons emission at Sao Jose dos Campos, Brazil, during the second sundial campaign 40: En 41: En 42: 53: Sundial Workshop, 3 54: 24-28 Fev.<1987> 56: La Jolla 57: USA 58: DGE 58: DAE 59: FISAT 61: 64: <1987> 68: PRE 76: AERONOMIA 87: ALTA ATMOSFERA 88: SUNDIAL 88: Solar-Minimum Equatorial Campaign 91: FDB - 19980925 92: FDB - EGCF MFN: 2732 1: SID/SCD 2: 4150 3: INPE-4150-PRE/1056 4: MET 5: PM 6: m 7: [07]551.5:632.164(81) 16: Almeida, Fausto Carlos de 16: Sa, Leonardo Deane de Abreu 18: Previsao de safras no Brasil: um breve historico dos modelos de produtividade 20: 14 40: Pt 41: Pt 42: 58: DCT 62: INPE 64: <1987> 67: BR 68: RPQ 90: b 76: METEOROLOGIA 91: FDB-19930125 92: FDB-MLR 101: D MFN: 2733 1: SID/SCD 2: 4152 3: INPE-4152-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Abdu, Mangalathayil Ali 10: Reddly, B.M. 10: Walker, G.O. 10: Hanbaba, R. 10: Sobral, Jose Humberto Andrade 10: Fejer, B.G. 10: Woodman, R.F. 10: SZUSZCZEWICZ, E.P. 12: Processes in the quiet and disturbed equatorial-low latitude ionosphere: Sundial Campaign 1984 14: 69-80 30: Annales Geophysicae 31: 6 32: 1 53: Sundial Workshop, 3 54: Feb. <1987> 56: La Jolla 58: DAE 59: IONO 61: 64: Feb. <1988> 68: PRE 76: AERONOMIA 87: IONOSFERA 88: SUNDIAL 88: Solar Minimum Equatorial Camapaign 83: A network of ionospheric diagnostic instruments was operated on a world wide basis during the October 5-13, 1984 SUNDIAL campaign. The network provided a unique opportunity for a truly multiple technique global analysis of the equatorial-low latitude ionospheric behaviour during the campaign period. The SUNDIAL equatorial-low latitude data set included electric field and spread F data from Jicamarca radar, ionosonde data from 15 stations and magnetograms from 5 stations operated in the American, African, Asian and Indian sectors. Also included are data from electronic polarimeters at Brazilian low-latitude sites. The data analysis has focused attention on the global scale steady state ionospheric behaviour and its predictability by global theoretical model of Sojka and Schunk (1985)and by the International Reference Ionospheric (IRI). The results are suggestive of the need to modify existing quiet time electric field and neutral wind models in varying degrees for different longitude sectors. The analysis also concerns global scale ionospheric transient behaviour in response to exo-ionospheric variabilities under disturbed conditions, in an approach towards a better understanding of the factors that effect short-term prediction schemes. Among the important outcomes of this study is the possibility of using longitude chains of equatorial region ionosondes (and magnetometers)for investigation of equatorial ionospheric response to magnetospheric electric field penetration events and disturbance dynamo effects 91: FDB - 19980925 92: FDB - EGCF MFN: 2734 1: SID/SCD 2: 4153 3: INPE-4153-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Jablonski, Francisco Jose 10: Steiner, Joao Envagelista 12: On teh stability of the 13.2 min scillation of V1223 sagittarii 14: 672-677 30: The Astrophysical Journal 31: 323 32: 2 Part 1 40: En 41: En 42: 58: DAS 59: EXTRA 61: 64: Dec. <1987> 68: PRE 76: ASTROFISICA 91: FDB - 19980925 92: FDB - EGCF MFN: 2735 1: SID/SCD 2: 4156 3: INPE-4156-RPQ/ 4: CEA 5: MP 6: m 7: [07] 16: Zamlutti, Carlos Jose 18: Influence of an interhemispheric plasma flow on the neutral atmosphere Ion-Drag effects 40: En 41: En 42: 58: DAE 59: IONO 62: INPE 64: abr.<1987> 66: Sao Jose dos Campos 68: RPQ 76: AERONOMIA 91: FDB - 19980925 92: FDB - EGCF MFN: 2736 1: SID/SCD 2: 4160 3: INPE-4160-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Kane, Rajaram Purushotam 12: Prediction of annual rainfall at Fortaleza, CE, Brazil in recent years 14: 53-62 30: Revista Brasileira de Geofisica 31: 5 32: : 40: En 41: En 42: 58: DGE 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 87: CHUVA 82: 91: FDB - 19980928 92: FDB - EGCF MFN: 2738 1: SID/SCD 2: 4193 3: INPE-4193-PRE/ 4: FISPLAMA 5: MC 6: am 7: [07] 10: Chian, Abraham Chian Long 12: Nonlinear generation of the FP radiation upstream of planetary bow shocks 14: 378-380 18: Proceendigs 40: En 41: En 42: 53: Chapman Conference on Plasma Waves and Instabilities in Magnetospheres and at Comets 54: out.<1987> 56: Sendai 57: JP 58: LAP 59: 901008 61: 64: <1987> 68: PRE 76: FÖSICA DE PLASMA 87: COMETAS 87: ONDAS DE PLASMA 91: FDB - 19981005 92: FDB - EGCF MFN: 2739 1: SID/SCD 2: 4195 3: INPE-4195-PRE/1079 4: MET 5: PM 6: m 7: [07]551.521.14 (811.3) 16: Yelisetty, Viswanadham 16: Andre, Romisio Geraldo Bouhid 16: Sa, Leonerdo Deane de abreu 16: Silva Filho, Vicente de Paula 18: Componentes do balanco da radiacao acima da copa da Floresta Amazonica (teceira campanha de coleta de dados)) 20: 49 40: Pt 41: Pt 42: 58: DCT 59: MICRA 62: INPE 64: jun. <1987> 67: BR 68: RPQ 90: b 76: METEOROLOGIA 91: FDB-19930125 92: FDB-MLR 101: D MFN: 2741 1: SID/SCD 2: 4197 3: INPE-4197-RPQ/ 4: CEA 5: MP 6: m 7: [07] 16: Pereira, Enio Bueno 16: Lemes, Marco Antonio Maringolo 18: Radon concentration inversions in the troposphere 20: 021 40: En 41: En 42: 58: DGE 59: RADIOATIVIDADE ATMOSFERA 61: INPE 64: June <1987> 66: Sao Jose dos Campos 68: RPQ 76: GEOFISICA ESPACIAL 87: RADIOATIVIDADE ESPACIAL 87: RADONIO 87: TROPOSFERA 91: FDB - 19981005 92: FDB - EGCF MFN: 2742 1: SID/SCD 2: 4212 3: INPE-4212 4: CEA 5: S 6: as 10: Muralikrishna, Polinaya 10: Abdu, Mangalathayil Ali 12: Solar and magnetic declination control on the electrojet and distributed currents in the ionosphere over Jicamarca 14: 1017-1022 30: Journal of Geophysical Research 31: 93 32: A2 40: En 41: En 42: 58: DAE 59: IONO 61: 64: Feb. <1988> 68: PRE 76: AERONOMIA 87: correntes ionosf‚ricas 87: controle magn‚tico 87: eletrojatos 87: declinio 88: ionospheric currents 88: magnetic control 88: declination 83: Daytime variation in the average east-west drift velocity of electrons in the height range of 95-110 km over Jicamarca (0.9 degree N, dip latitude)is compared with variation in the horizontal component of the geomagnetic field at the closeby Huancayo station (0.6 degree N, dip latitude). On magnetically quiet days, the ratio of H to the electron drift velocity shows a local time variation asymmetric with respect to local noon, although one would expect a symmetric cos X (where X is the solar zenith angle)type of variation for the same, if, indeed, H arises solely from the electrojet region in which the electron drift velocities are measured. The observed asymmetry indicates significant contribution of distributed currents from height regions above the electrojet in the integrated current represented by H. Further, the observed seasonal variation in the degree of the asymmetry seems to point out the importance of magnetic and solar declination angles in controlling the relative contributions of the distributed (and electrojet)currents to the magnitude of the observed H values 91: 8809 MFN: 2743 1: SID/SCD 2: 4214 3: INPE-4214-PRE/1095 4: MET 5: MC 6: am 7: [07]551.511.61 10: Hada, Kioshi 10: Jacabs, Stanley 12: Metodo WKBJ e das coordenadas esticadas para filtrar ondas inerciais de alta frequencia 40: Pt 41: Pt 42: 53: Congresso Nacional de Matematica Aplicada e Computacional, 10 54: 21-25 set. <1987> 56: Gramado 57: RS 58: DCT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MLR 101: D MFN: 2744 1: SID/SCD 2: 4215 3: INPE-4215-PRE/1096 4: MET 5: PM 6: m 7: [07]551.508.2 16: Arlino, Paulo Rogerio de Aquino 16: Nogueira, Jorge Luiz Martins 16: Inoue, Joao Koiti 18: Sistema automatico de aquisicao de dados com a utilizacao de microcomputadores: Estacao Meteorologica Automatica (EMA) 20: 9 40: Pt 41: PT 42: 58: DME 59: EMA 62: INPE 64: jul. <1987> 67: BR 68: RPQ 90: b 76: METEOROLOGIA 91: FDB-19930125 92: FDB-MLR 101: D MFN: 2745 1: SID/SCD 2: 4216 3: INPE-4216-PRE/1097 4: MET 5: PM 6: m 7: [07]551.513(8) 16: Gam, Manoel alonso 16: Vadlamudi, Brahamananda Rao 18: Transient kinetic energy at 200MB and the development of synoptic disturbances over South America during the Southern winter 20: 24 40: En 41: En 42: 58: DME 59: CLIMA 64: Jily <1987> 68: RPE 76: METEOROLOGIA 91: FDB-19921223 92: FDB-MLR 101: D MFN: 2746 1: SID/SCD 2: 4217 3: INPE-4217-PRE/1098 4: MET 5: MC 6: am 7: [07]551.511.61 10: Hada, Kioshi 10: Jacob, Stanley 12: Teoria da perturbacao do dominio no equilibrio estatico de massas em rotacao 40: Pt 41: Pt 42: 53: Congresso Nacional de Matematica Aplicacao e Computacional, 10 54: 21-25 set. <1987> 56: Gramado 57: RS 58: DCT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MLR 101: D MFN: 2747 1: SID/SCD 2: 4223 3: INPE-4223-RPE/546 4: MET 5: MP 6: m 7: [07] 16: Ning, Carlos Ho Shih 16: Lemes, Marco Antonio Maringolo 16: Terauchi, Eiichi 18: Controle de qualidade de dados convencionais de ar superior (Temp e Pilot) 20: 52 40: Pt 41: Pt 41: En 42: 58: CPT 59: MODNUM 62: INPE 64: jul. <1987> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2748 1: SID/SCD 2: 4224 3: INPE-4224-RPE/547 4: MET 5: MP 6: m 7: [07]551.509 16: Prakki, Satyamurty 16: Franchito, Sergio Henrique 18: Elaboracao dos processos fisicos para o modelo de previsao numerica do INPE 20: 32 40: Pt 41: Pt 41: En 42: 58: DCT 59: PNTE 62: INPE 64: jul. <1987> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2749 1: SID/SCD 2: 4226 3: INPE-4226/NTC 4: CEA 5: MP 6: m 7: [07] 16: Dubut, J.P. 16: Aquino , C.D. 18: Plataforma de coleta de dados para o sistena argos - manual tecnico 20: 128 40: Pt 41: Pt 42: 58: CRN 61: INPE 64: Jul.<1987> 66: Sao Jose dos Campos 68: NTC 76: GEOFISICA ESPACIAL 87: PLATAFORMA DE COLETA DE DADOS 87: SISTEMA ARGOS 87: PCDS 91: FDB - 19981005 92: FDB - EGCF MFN: 2750 1: SID/SCD 2: 4227 3: INPE-4227/NTC 4: CEA 5: MP 6: m 7: [07] 16: Dubut, J.P. 18: Documentacao tecnica complementar para transferencia de tecnologia da PCD/argos e interface associada 20: 196 40: Pt 41: Pt 42: 58: CRN 59: 924156 62: INPE 64: Jul.<1987> 66: Sao Jose dos Campos 68: NTC 76: GEOFISICA ESPACIAL 87: PCDS 87: PLATAFORMA DE COLETA DE DADOS 87: SISTEMA ARGOS 87: TRANSFERENCIA DE TECNOLOGIA 91: FDB - 19981005 92: FDB - EGCF MFN: 2752 1: SID/SCD 2: 4229 3: INPE-4229/PRE 4: CEA 5: S 6: as 7: [07] 10: Kane, Rajaram Purushotam 12: Periodicties in the time-series of geomagnetic inclination during the last 9000 years, recorded in sediment cores from lake kasumigaura, Japan 14: 525-532 30: Journal of Geomagnetism and Geoelectricity 31: 41 32: 6 40: En 41: En 42: 58: DGE 59: GEOMA 61: 64: <1989> 68: PRE 76: GEOFISICA ESPACIAL 87: GEOMAGNETISMO 82: 83: A power-spectrum analysis of the Gcomagnetic Inclination data time-series for the last 9000 years as obtained from studies of sediment cores from Lake Kasumigaura, Japan, revealed highly significant periodicities of about 900, 1900 and 3200 years and less significant periodicities of about 375, 450 and 650 years 91: FDB - 19981007 92: FDB - EGCF MFN: 2753 1: SID/SCD 2: 4230 3: INPE-4230/PRE 4: CEA 5: MC 6: am 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 12: Diagnosticos sobre a quimica da atmosfera atraves da medidas de ozonio 40: En 41: En 42: 53: Reuniao anual da Sociedade Brasileira para o Progresso da Ciencia, 39. 54: 12-18 Jul. 56: Brasilia 57: BR 58: DGE 59: PESQUISA DE OZONIO 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 87: OZONIO 87: medi‡Æo 87: QUIMICA DA ATMOSFERA 91: FDB - 19981007 92: FDB - EGCF MFN: 2754 1: SID/SCD 2: 4231 3: INPE-4231-RPE/1106 4: CEA 5: S 6: as 7: [07] 10: Sahai Yogeshwar 10: Bittencourt, Jose Augusto 10: Takahashi, Hisao 10: Teixeira, Nelson Rodrigues 10: Sobral, Jose Humberto Andrade 10: Tinsley, B.A. 10: Rohrbaugh, R.P. 12: Multispectral optical observations of ionospheric F-region storn effects at low latitude 14: 371-381 30: Planetary and Space Science 31: 36 32: 4 40: En 41: En 42: 58: DGE 58: DAE 59: LUME 61: 64: <1988> 68: PRE 76: AERONOMIA 87: LUMINESCENCIA ATMOSFERICA 87: IONOSFERA 87: REGIAO F 91: FDB - 19981007 92: FDB - EGCF MFN: 2755 1: SID/SCD 2: 4232 3: INPE-4232/PRE 4: CEA 5: MC 6: am 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: Marinho, Edith Vasconcellos de Andrade 12: A concentracao de monoxido de carbono (CO)no ar como parametro de pureza 14: 9-16 30: Revista Brasiliera de Geofisica 31: 6 32: : 40: Pt 41: Pt 42: 53: Reuniao anual da Sociedade Brasileira para o Progresso da Ciencia, 39 54: 12-18 Jul.<1997> 56: Brasilia 57: BR 58: DGE 59: PROJETO QUIAT 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 87: OZONIO ESTRATOSFERICO 87: medi‡Æo 87: concentra‡Æo 87: MONIXIDO DE CARBONO 91: FDB - 19981019 92: FDB - EGCF MFN: 2757 1: SID/SCD 2: 4234 3: INPE-4234/PRE 4: CEA 5: MC 6: am 7: [07] 10: Pereira, Enio Bueno 10: Nordemann, Daniel Jean Roger 12: Matematica aplicada a geofisica nuclear 40: Pt 41: Pt 42: 53: Encontro regional de matematica aplicada e computacional 54: 18-20 Maio 56: Sao Jose dos Campos 57: BR 58: DGE 59: LABORATORIO DE MAGNETOSFERA 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 87: FISICA NUCLEAR 91: FDB - 19981019 92: FDB - EGCF MFN: 2758 1: SID/SCD 2: 4235 3: INPE-4235 4: CEA 5: MC 6: am 10: Trivedi, Nalin Babulal 10: Costa, Jos‚ Marques da 10: Padilha, Antonio Lopes 10: DUPIS,A. 10: CAVOIT,C. 12: MEDIDAS MAGNETOTELURICAS E AUDIOMAGNETOTELURICAS EM DUAS ESTACOES NA BACIA DE TAUBATE 14: 016 53: ENCONTRO REGIONAL DE GEOFISICA, 2 54: 25-27 nov. <1987> 56: Salvador 58: DGE 59: GEOMA 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 91: 8711 MFN: 2759 1: SID/SCD 2: 4236 3: INPE-4236 4: CEA 5: MC 6: m 7: CES 10: Sahai, Yogeshwar 10: Kane, Rajaram Purushottam 10: Teixeira, Nelson Rodrigues 12: ANTARCTIC OZONE DEPLETION AND OZONE MEASUREMENTS IN BRASIL 14: 14 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso Ciˆncia, 39 54: 12-18 JUL. <1987> 56: Bras¡lia 58: DAE 59: FISAT 61: 64: <1987> 68: PRE 76: AERONOMIA 91: 8707 MFN: 2760 1: SID/SCD 2: 4237 3: INPE-4237-PRE 4: CEA 5: MC 6: am 7: [07] 10: Trivedi, Nalin Babulal 10: Padilha, Antonio Lopes 10: Costa, Jos‚ Marques da 12: Micropulsacoes geomagneticas e geoeletricas na Estacao Antartica Comandante Ferraz 14: 13 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 39 54: 12-18 jul. <1987> 56: Brasilia 57: BR 58: DGE 59: GANTAR 61: 64: <1987> 68: PRE 90: b 76: GEOFISICA ESPACIAL 91: FDB-19961118 92: FDB-MLR MFN: 2762 1: SID/SCD 2: 4263 3: INPE-4263-PRE/1136 4: MET 5: S 6: as 7: [07]550.4(816.1) 10: Moreira-Nordemann, Lycia Maria 10: Danelon, Olga Maria 10: Lopes, Joao Ciarrochi 10: Maset Filho, Bruno 12: The composition of precipitation in Cubatao Region (S. Paulo - Brazil) 30: Water, Air and Soil Pollution; 40: En 41: En 42: 58: DCT 59: GAMB 61: 62: INPE 64: July <1987> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19932501 92: FDB-MD 101: D MFN: 2763 30: Revista Ciencia e Cultura 31: 40 32: 1 40: Pt 41: Pt 41: En 42: 58: DCM 61: 64: jan. <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921217 92: FDB-MD 101: D 1: SID/SCD 2: 4264 3: INPE-4264-PRE/1137 4: MET 5: S 6: as 7: [07] 10: Espirito-Santo, Clovis Monteiro do 10: Moreira-Nordemann, Lycia Maria 12: Um modelo simplificado para estimativa da taxa de precipitacao do SO2 antropogenico na grande Sao Paulo 14: 78-82 MFN: 2764 1: SID/SCD 2: 4295 3: INPE-4295-PRE/1166 4: MET 5: MC 6: am 7: [07] 10: Danelon, Olga Maria 10: Moreira-Nordemann, L.M. 12: Hidroquimica do Rio Quilombo - CUBATAO 14: 197-206 20: 13 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Geoquimica, 1. 54: 30 out.-02 nov. <1987> 56: Porto Alegre 57: BR 61: 64: <1987> 68: PRE 90: b 91: 8710 MFN: 2765 1: SID/SCD 2: 4297 3: INPE-4297- 4: CEA 5: MC 6: am 7: ASF 10: Clemesha, Barclay Robert 10: Takahashi, Hisao 10: Eras, Agnaldo 10: Sahai, Yogeshwar 12: LUMINESCENCIA VEICULAR OBSERVADA NO FOGUETE SONDA III 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 39 54: 12-18 jul. <1987> 56: Brasilia 57: BR 58: DAE 59: FISAT 61: 64: <1987> 68: PRE 76: AERONOMIA 91: 8707 MFN: 2767 30: Planetary and Space Science 31: 35 32: 9 40: En 41: En 42: 58: DAE 61: 64: <1987> 68: PRE 90: b 76: AERONOMIA 91: FDB-19960314 92: FDB-MLR 1: SID 2: 4306 3: INPE-4306-PRE 4: CEA 5: S 6: as 7: [07] 10: Gonzales-Alercon, Walter Demetrio 10: Tsurutani, B.T 12: Criteria of interplanetary parameters causing intense magnetistorms (DST - 100NT) 14: 1101-1109 MFN: 2768 1: SID/SCD 2: 4307 3: INPE-4307 4: CEA 5: S 6: as 7: CES 10: Kane, Rajaram Purushottam 12: Long-Term Variation of Total Ozone 14: 143-154 30: Pure and Applied Geophysics 31: 127 32: 1 40: En 41: En 42: 58: DGE 59: MAGNET 61: 64: <1988> 68: PRE 76: GEOFISICA ESPACIAL 88: Total ozone 88: long-term variation 83: Abstract-The long-term variation of total ozone is studied for 1957 up to date for different latitude zones. The 3-year running averages show that, apart from a small portion showing parallelism with sunspot cycles, the trends in different latitude zones are dissimilar. In particular, where northern latitudes show a rising trend, the southern latitudes show an opposite (decreasing)trend. In the north-temperate group, Europe, North America and Asia show dissimilar trends. The longer data series (1932 ownards)for Arosa shows, besides a solar-cycle-dependent component, a steady level during 1932-1953 and a downtrend thereafter up to date. Very localised but long-lasting circulation patterns, different in different geographical regions, are indicated 91: 8801 MFN: 2769 1: SID/SCD 2: 4308 3: INPE-4308 4: CEA 5: S 6: AS 7: 000 10: TINSLEY,B.A. 10: BIONDI,M.A. 10: Sahai, Yogeshwar 10: MERIWETHER JR.,J.W. 12: EQUATORIAL PARTICLE PRECIPITATION DURING MAGNETIC STORMS AND RELATIONSHIP TO EQUATORIAL THERMOSPHERIC HEATING 14: 270-276 30: Journal Geophyical Research 31: 93 32: A1 40: En 41: En 42: 58: DAE 59: FISAT 61: 64: Jan. <1988> 68: PRE 83: We compare optical observations of ring current particle precipitation from a near equatorial site in Brazil with variations in the AE and Dst indices. Precipitation occurs during ring current injection when AE is large, but for AE large without ring current injection, little precipitation is seen. Comparisons are also made with 630-nm observations of thermospheric heating made simultaneously in Peru. The thermospheric temperatures have been corrected for instrumental drift and temperature enhancements of several hundred kelvins are present. It is not possible to associate clearly the heating with direct precipitation nor in the short term with transport of heat from higher latitudes. On a longer time scale it is likely that both mid-latitude ring current sources and high-latitude Joule heating sources are involved 91: 8708 MFN: 2770 1: SID/SCD 2: 4309 3: INPE-4309 4: CEA 5: S 6: as 10: HARRIS,F.R. 10: LLEWELLYN,E.J. 10: GATTINGER,R.L. 10: Sahai, Yogeshwar 12: APPLICATION OF THE STS GET AWAY SPACIAL TO OPTICAL STUDIES OF THE UPPER ATMOSPHERE 14: 211-217 30: Canadian Aeronautics and Space Journal 31: 33 40: En 41: En 42: 58: DAE 59: FISAT 61: 64: <1987> 68: PRE 91: 8704 MFN: 2772 1: SID/SCD 2: 4325 3: INPE-4325 4: CEA 5: MC 6: am 7: GEM 10: Padilha, Antonio Lopes 10: Trivedi, Nalin Babulal 10: Costa, Jos‚ Marques da 10: SOUZA,E.G 10: DUPIS,A 10: CAVOIT,C. 12: MEDIDAS AUDIOMAGNETOTELURICAS NA REGIAO NORDESTE DA BACIA DO PARANA 14: 21 53: ENCONTRO REGIONAL DE GEOFISICA 54: 25-27 nov. <1987> 56: Salvador 58: DGE 59: SOMAT 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 91: 8711 MFN: 2773 1: SID/SCD 2: 4329 3: INPE-4329-RTR/106 4: MET 5: MP 6: m 7: [07]681.3.016:551.5 16: Nakaya, Paulo Seiji 16: Torsani, Jose Aparecido 16: Almeida, Fausto Carlos de 16: Capretz, Luiz Fernando 16: Martins, Margarida Haruko 16: Carvalho, Rita de Cassia de Menezes T. de 16: Cabral, Maria Roseli 18: Banco de dados meteorologicos manual do gerente 20: 36 40: Pt 41: Pt 41: En 42: 58: DME 59: TECLIM/BDMET 62: INPE 64: set. <1987> 66: Sao Jose dos Campos 67: BR 68: RTR 90: b 76: METEOROLOGIA 91: FDB-19930216 92: FDB-MD 101: D MFN: 2774 1: SID/SCD 2: 4332 3: INPE-4332-TDL/289 4: MET 5: T 6: m 7: [07]551.588.3 16: Santos, Regina Celia dos 18: Propriedades termicas do solo: um estudo de casos 20: 133 40: Pt 41: Pt 41: En 42: 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: UPG 58: DME 59: MET 62: INPE 64: abr. <1987> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: MICROMETEOROLOGIA 87: MICROMETEOROLOGIA 87: TROCA DE ENERGIA 87: DIFUSIVIDADE TERMICA 87: CALOR ESPECIFICO 87: SOLO 82: 83: A transferencia de calor nas camadas da superficie do solo e uma funcao do gradiente de temperatura e de suas propriedades termicas. A difusividade termica (K)do solo depende da sua estrutura e conteudo de umidade (periodo seco e umido). O parametro k para a estacao localizada em 22 graus 41'S e 45 graus 00'W, Cachoeira Paulista, SP, foi determinado utilizando-se as temperaturas do solo as profundidades de 05, 10 e 15 cm para o solo nu durante diferentes estacoes dos anos 1984 e 1985. Os valores medios de k obtidos a partir dos metodos do "range" e da defasagem estao compativeis com aqueles obtidos a partir da amplitude e fase do primeiro harmonico da Serie de Fourier. Os resultados mostram que os valores de K dependem do metodo de estimativa e revelam ainda que o conteudo de umidade no solo atua de forma singular nos perfis de temperatura, nas propriedades termicas e consequentemente nos fenomenos agrometeorologicos relevantes 91: FDB-19921216 92: FDB-MD 101: D MFN: 2775 1: SID/SCD 2: 4339 3: INPE-4339-PRE/1180 4: MET 5: S 6: as 7: [07]550.46 10: Vieira, B.M. 10: Forti, Maria Cristina 10: Tavares, M.F.M. 10: Moreira Nordemann, Lycia Maria 12: Na, Ca, Mg e Cl atmosfericos na regiao nordeste do estado de S.Paulo 14: 17-23 30: Revista Brasileira de Geofisica 31: 6 32: 1 40: Pt 41: Pt 41: En 42: 58: DCT 59: PACHU 61: 64: jun.-dez. <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921217 101: D MFN: 2777 1: SID/SCD 2: 4344 3: INPE-4344 5: PM 6: M 16: DUBUT,J.P. 18: TRANSDUTOR PLUVIOMETRICO - MANUAL TECNICO 20: 66 58: 4456 59: 926701 64: <1987> 68: NTC 91: 8709 MFN: 2778 1: SID/SCD 2: 4345 3: INPE-4345 4: CEA 5: MC 6: am 10: Trivedi, Nalin Balbul 10: LANZEROTTI,L.J. 10: WOLF,A. 10: MACLENNAN,C.G. 10: MEDFORD,L. 12: FTE LIKE VARIATIONS IN THE GEOMAGNETIC FIELD AT GROUND BASED CONJUGATE STATIONS IN THE CUSP REGIONS 14: 17 53: ReuniÆo Anual da Sociedade Brasileira para o progresso da Ciˆncia, 29 54: jul. <1987> 56: Brasilia 58: DGE 59: GEOMA 61: 64: <1983> 68: PRE 76: GEOFÖSICA ESPACIAL 91: 8707 MFN: 2781 1: SID/SCD 2: 4356 3: INPE-4356-PRE 4: CEA 5: S 6: as 7: [07] 10: Padilha,Antonio Lopes 10: Trivedi, Nalin Babulal 10: Costa, Jose Marques da 10: Dupis, A. 10: Cavoiti, C 12: Audiomagneticellurig study in northeast region of Parana basin(South America) 14: 824-831 30: Geophysics 31: 54 32: 7 40: En 41: En 42: 58: DGE 59: IONO 61: 64: July <1989> 68: PRE 76: GEOFISICA ESPACIAL 83: Audiomagnetotelluric (AMT)soundings at 31 stations along a 215 km long profile in the region of Parana Basin (South America)were conducted. This AMT profile runs across an important gravity positive anomaly. The anomaly is located near Grande river which demarcates a natural baundary between the states of Sao Paulo and Minas Gerais in Brazil. The objective of this AMT survey was to map the resistive structures of upper couple of hundred meters and select sites for deeper MT soundings that may throw light on possible causes of the gravity anomaly. Results of this survey made possible to map the uppermost layer of sediments called Bauru Formation reaching depths of up to 250 m. The varying depths of Bauru Formation sedimente and its contact point with volcanic resistive rocks called Serra Geral Formation along the profile presented certain irregularities (ondulations)not known before. Five sites for deeper MT soundings were selected with three sites in the region of anomaly and one each at the extremities of the profile 91: FDB-20000112 92: FDB-MLR MFN: 2784 1: SID/SCD 2: 4363 3: INPE-4363-PRE/1189 4: MET 5: MC 6: am 7: [07]550.46 10: Espirito Santo, Clovis Monteiro 10: Forti, Maria Cristina 10: Moreira-Nordemann, Lycia Maria 12: Elementos na precipitacao de Sao Jose dos Campos-SP 14: 143-154 20: 11 40: Pt 41: Pt 41: En 42: 53: Congresso Brasileiro de Geoquimica,1 54: 30 out.-02 nov. <1987> 56: Porto Alegre 57: BR 58: DCT 59: PACHU 61: 62: INPE 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19932201 92: FDB-MD 101: D MFN: 2785 1: SID/SCD 2: 4366 3: INPE-4366-PRE/1191 4: MET 5: S 6: as 7: [07] 10: Moraes, Elisabete Caria 10: Arai, Nelson 10: Almeida, Fausto Carlos de 12: Avaliacao da atenuacao por nuvens na estimativa da radiacao solar incidente na superficie terrestre atraves de satelite geostacionario 14: 1012-1014 30: Ciencia e Cultura 31: 40 32: 10 40: En 41: En 42: 58: DCM 59: PROSAT 61: 64: out. <1988> 68: PRE 90: b 76: METEOROLOGIA 91: 8709 MFN: 2786 1: SID 2: 4367 3: INPE-4367 4: CEA 5: S 6: as 10: Abdu, Mangalathyil Ali 10: Sobral, Jos‚ Humberto Andrade 10: Nakamura, Y. 10: Zamlutti, Carlos Jos‚ 12: Equatorial plasma bubble zonal velocity height gradient from spaced VHF polarimeter and scanning 630 Nm measurementsE 14: 965-968 30: Geophysical Research Lettrs 31: 14 32: 9 40: En 41: En 42: 58: DAE 59: IONO 61: 64: Sept. <1987> 68: PRE 76: AERONOMIA 83: Simultaneous measurements of equatorial ionosphere plasma bubble zonal elocities by two different techniques, namely, In east-west spaced vhf electronic polarimeter system and an east-west scan 630nm airglow photometer, carried out over Brazilian low atitude sites, yielded different velocities, but similar local time variation pattern; the polarimeters always measuring higher velocities an the photometer. Based on the difference in height regions sensitive to the two the results are interpreted as idence of the presence of a vertical shear in zonal plasma motion over our low latitude serving site. The results are compared with existing evidences on the velocity shears over the equator as measured by vhf radars and other different techniques. The implications of these res,.ults are briefly discusse 91: 8708 MFN: 2787 1: SID/SCD 2: 4368 3: INPE-4368 4: CEA 5: S 6: as 10: Jayanthi, Udaya Bhaskaram 10: Jablonski, Francisco Jos‚ 10: Steiner, Joao Envagelista 12: Gamma-rays above 184 kev from 4U1820-30 associated with 685 second period 14: 347-350 30: Astrophysical Letters Communications 31: 27 32: 4 40: En 41: En 42: 58: DAS 59: ASTRO 61: 64: <1989> 68: PRE 76: ASTROFÖSICA 88: Clusters 88: globular 88: gamma-rays 88: bursts 88: X-rays 88: bursts 83: An analysis of the low-energy gamma-ray data acquired in a balloon experiment performed on 1982 April 12 indicates a possible detection of modulation due to the X-ray source 4UI820-30. The identification was made possible by the observed modulation period value of 681.5 ñ 4.5 s and by the phase of the maximum in modulation, 0.59ñ0.10. Both these aspects are consistent with the observations by satellites at X-ray wavelengths 91: 8709 MFN: 2788 1: SID/SCD 2: 4369 3: INPE-4369 4: CEA 5: S 6: as 10: Busko, Ivo Claudio 10: Steiner, Joao Envagelista 12: PROFILES OF EMISSION LINES IN AGN PART I: OBSERVATIONS OF (OIII)LINES 14: 525-538 30: Monthly Notices of the Royal Astronomical Society 31: 232 32: 3 40: En 41: En 42: 58: DAS 59: ASTRO 61: 64: June <1988> 68: PRE 76: ASTROFÖSICA 83: We present high resolution (35 7 km.s-1)spectroscopic observations of the [OIII]4959/5007 emission lines in 13 southern active galactic nuclei. Profile parameters are presented for each object, using the characterization methods defined by Heckman et al. (1981)and Whittle (1985a). The parameters are compared with measures from other authors, obtained with different resolutions and detectors. We show also the very unusual [OIII]5007 profile of HGC7213, with two very distinct components, a narrow one being attibutable to a "classical" Narrow Line Region, and a very wide one whic4 may originate in a region characteristic of LINERs 91: 8709 MFN: 2789 1: SID/SCD 2: 9989 3: INPE-9989-PRE/5549 4: MET 5: s 6: as 7: [07] 10: Shuttleworth, W.J. 10: Gash, J.H.B. 10: Lloyd, C.R. 10: Moore, C.J. 10: Roberts, John 10: Molion, Luiz Carlos Baldicero 10: Nobre, Carlos Afonso 10: Sa, Leonardo Deane de Abreu 10: Marques Filho, A.D. 10: Fish, Gilberto 10: Fattori, A.P. 10: Ribeiro, Maria Nazare Goes 10: Cabral, Osvaldo M.R. 12: Amazonian evaporation 14: 179-191 30: Revista Brasileira de Meteorologia 31: 2 32: 1 40: Pt 41: Pt 42: 58: CPT 61: 64: jul. <1987> 68: PRE 90: b 76: METEOROLOGIA 82: 91: FDB-19921229 92: FDB-MLR 101: D MFN: 2790 1: SID/SCD 2: 4371 3: INPE-4371-RTR/107 4: MET 5: MP 6: m 7: [07]551.5 16: Torsani, Jose Aparecido 16: Nakaya, Paulo Seiji 16: Almeida, Fausto Carlos de 16: Capretez, Luiz Fernando 16: Martins, Margarida Haruko 16: Carvalho, Rita de Cassia M.T. de 16: Cabral, Maria Roseli 18: Banco de dados meteorologicos manual do usuario 20: 73 40: Pt 41: Pt 41: En 42: 58: DME 59: TECLIM/BDMET 62: INPE 64: set. <1987> 66: Sao Jose dos Campos 67: BR 68: RTR 90: b 76: METEOROLOGIA 91: FDB-19930216 92: FDB-MD 101: D MFN: 2792 1: SID/SCD 2: 4377 3: INPE-4377-PRE/1197 4: MET 5: MC 6: am 7: [07]550.46 10: Forti, Maria Cristina 10: Setzer, Alberto Waingort 10: Moreira-Nordemann 12: Estudo de Cations na precipitacao Antartica Estacao Comandante Ferraz 20: 21 40: Pt 41: Pt 41: En 42: 53: Congresso Brasileiro de Geoquimica, 1 54: 30 out.-02 nov.<1987> 56: Porto Alegre 57: BR 58: DCT 58: DSM 59: CHUVAS 61: 62: INPE 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 83: Foi efetuado um ano de amostragem (Jan.86-Mar.87)de agua de chuva e neve fresca na Estacao Comandante Ferraz (62.05'S,058.23'W). Foram medidos os teores de Na+, K+, Mg2+. Procura-se interpretar o comportamento desses cations dois tipos de precipitacao. Os resultados, alem de confirmar a influencia marinha na agua de chuva, mostram sua existencia para a neve fresca, Nao pode ser evidenciada uma variacao sazonal exceto para o Na+ nas amostras de neve. Verificou-se que os teores dos cations na neve foram em media 70 83: inferiores aos encontrados na agua de chuva 91: FDB-19932201 92: FDB-MD 101: D MFN: 2793 1: SID/SCD 2: 4400 3: INPE-4400-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr.,Osmar 10: Gonzalez-Alarcon, Walter Demetrio 10: Gonzalez, Alicia Luisa Clua 12: Time-variations of ray fluxes at South Atlantic magnetic anomaly in association with a strong geomagnetic storm 14: 17275-17280 30: Journal of Geophysical Research 31: 94 32: A12 40: En 41: En 42: 58: DGE 59: MAGNET 61: 64: Dec. <1989> 68: PRE 76: GEOFISICA ESPACIAL 83: This paper describes the temporal characteristics of the X ray fluxes measured by a balloon-borne scintillation detector on April 14, 1981, due to electron precipitation at the South Atlantic Magnetic Anomaly and in association with a strong geomagnetic storm. The data clearly indicate the dynamical nature of the precipitation process and also give some clues on physical mechanisms that could be responsible for it. As a result, it is suggested that the modulation of the electron precipitation during this storm would have been caused by processes involving wave-particle or wave-modulated wave-particle interactions 91: 8807 MFN: 2794 76: METEOROLOGIA 91: FDB-19921217 92: FDB-MD 101: D 54: 17-21 ago. <1987> 56: Lima 57: Peru 58: DCT 59: DINACO 61: 68: PRE 90: b 18: Anais 40: Pt 41: Pt 41: En 53: Congresso Latino Americano sobre Ciencias Del Mar, 2 1: SID/SCD 2: 4401 3: INPE-4401-PRE/1218 4: MET 5: MC 6: am 7: [07]551.46 10: Lorenzzetti, Joao Antonio 10: Stech, Jose Luiz 10: Wang, John D 12: Uso de um modelo barotropico de elementos finitos para o estudo da circulacao na Plataforma da Costa Sudeste do Brasil MFN: 2796 1: SID/SCD 2: 4421 3: INPE-4421- 4: CEA 5: S 6: as 10: Abdu, Mangalathayil Ali 10: Muralikrishna, Polinaya 10: Batista, Inez Staciarini 10: Chaves, A.H.P 12: On the rocket-induced wave disturbances in the daytime,equatorial ionosphere 14: 2758-2760 30: Journal of Geophysical Research 31: 93 32: A4 40: En 41: En 42: 53: Assembleia Geral da IniÆo Internacional de Geodesia e Geof¡sica (IUGG), 19 54: ago. <1997> 56: Vancauver 58: DAE 59: IONO 61: 64: Abr. <1988> 68: PRE 76: AERONOMIA 87: regiÆo F 87: medidas no local 87: densidade eletron ionosferica 88: F region 88: in situ measurements 88: ionospheric electron density 83: In situ measurements of daytime equatorial ionospheric E and F region electron densities were carried out using a high-frequency capacitance probe on board a SONDA III rocket launched from Natal, Brazil, on July 26,1984. Wave structures in the electron density profile having a scale length of -1.5 km to -10 km and amplitude of-10 percent of the ambient density were detected during the downleg trajectory. Possible sources of these waves are discussed, and their possible implication for irregularity formation under nighttime conditions is briefly mentioned 91: 8811 MFN: 2797 1: SID/SCD 2: 4422 3: INPE-4422 4: CEA 5: MC 6: am 10: Muralikrishna, Polinaya 10: Abdu, Mangalahyil Ali. 12: LARGE SCALE PLASMA IRREGULARITIES OBSERVED IN THE NIGHTTIME IONOSPHERE OVER NATAL USING A ROCKET-BORNE LANGMUIR PROBE 14: 19 53: ENCONTRO REGIONAL DE GEOFISICA, 2 54: 25-27 nov.<1987> 56: Salvador 58: DAE 59: IONO 61: 64: <1987> 68: PRE 76: AERONOMIA 91: 8711 MFN: 2798 1: SID/SCD 2: 4424 3: INPE-4424 4: CEA 5: S 6: as 7: Takahashi, Hisao 10: Clemesha, Barclay Robert 10: Sahai, Yogeshwar 12: CONTAMINATION GLOW OBSERVED DURING TWO ROCKET SOUNDING EXPERIMENTS 14: 109-119 30: Progress in Atmospheric Physics 58: DAE 59: FISAT 61: 64: <1988> 68: PRE 76: AERONOMIA 91: 8711 MFN: 2800 1: SID/SCD 2: 4426 3: INPE-4426 4: CEA 5: S 6: as 7: AST 10: PHILLIPS, MM 10: PHILLIPS, AC 10: HEATHCOTE, SR 10: BLANCO, VM 10: GEISLER, D 10: HAMILTON, D 10: SUNTZEFF, NB 10: JABLONSKI, FJ 10: STEINER, JE 10: COWLEY, AP 10: SCHMIDTKE, P 10: WYCKOFF, S 10: HUTCHINGS, JB 10: TONRY, J 10: STRAUSS, MA 10: THORSTENSEN, JR 10: HONEY, W 10: MAZA, J 10: RUIZ, MT 10: LANDOLT, AU 10: UOMOTO, DA 10: RICH, RM 10: GRINDLAY, JE 10: COHN, H. 10: SMITH, H.A. 10: LUTZ, JH 10: LAVERY, RJ 10: SAHA, A 10: Steiner, Joao Envagelista 12: THE TYPE IA SUPERNOVA 1986G IN NGC5128: OPTICAL PHOTOMETRY AND SPECTRA 14: 592-605 30: Publications of the Astronomical Society of the Pacific 31: 99 32: 617 58: DAS 59: ASTRO 61: 64: July <1987> 68: PRE 76: ASTROFÖSICA 88: supernovae 88: photometry 88: spectrophotometry 83: Optical light curves and spectra of the Type la supernova 1986G in NGC 5128 (Centaurus A)are presented. SN 1986G was discovered approximately one week before maximum light. The initial rate of decline of the B light curve was remarkably fast and characteristic of the infrequently observed Pskovskii photometric class á = 12. Although the spectral evolution closely resembled that of the more common "slower" photometric classes of Type la supernovae, subtle differences in the maximum-light spectra were detected. The expansion velocity of the photosphere of SN 1986G decreased rapidly at early phases, suggesting that the outer-envelope density gradient was less steep than in supernovae with smaller values of P. SN 1986G appears to have been heavily obscured (E (B -V)= 0.90 ñ 0. 10)by the dust lane of NGC 5128. This circumstance accounts for the strong interstellar-absorption lines of Ca ii H and K and Na I D observed in the spectra as well as for several weaker absorption features that we identify with the diffuse interstellar bands. SN 1986G provides graphic confirmation of the existence of intrinsic differences in the optical light curves and spectroscopic properties of Type la supernovae. Consequently, these objects must be used with considerable caution as cosmological standard candles. On the basis of the very close resemblance of SN 1986G to SN 19711 in NGC 5055, we derive a relative distance of D NGC 5128 / D NGC 5055 = 0.39 ñ 0.04. Further distance estimates are hampered due to the lack of other well-observed Type la supernovae with á = 12 91: 8711 MFN: 2804 1: SID/SCD 2: 4445 3: INPE-4445-TDL/313 4: MET 5: T 6: m 7: [07]551.551.8(811.3) 16: Manzi, Antonio Ocimar 18: Aspectos aerodinamicos de uma Floresta Amazonica 20: 131 40: Pt 41: Pt 41: En 42: 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 58: DCM 59: MET 62: INPE 64: maio <1987> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: CLIMATOLOGIA 87: MICROMETEOROLOGIA 87: TERRA FIRME 87: CAMADA LIMITE SUPERFICIAL 87: TRANSPORTES TURBULENTOS 87: CIRCULACAO ATMOSFERICA 87: FLORESTAS 87: UMIDADE 82: 83: Resultados dos parametros micrometeorologicos acima de uma floresta de terra firme da Amazonia Central, com altura media das arvores h 35 m, sao apresentados e discutidos sob a otica da teoria da similaridade de Monin e Obukhov, para 242 perfis (de vento, temperatura e umidade - do ar)medios horarios. O deslocamento do plano zero para momentum foi d=0, 80h e o comprimento de rugosidade z=0,09h em condicoes de neutralidade. os parametros de estabilidade dzeta e R mostraram importantes desvios para a instabilidade quando os efeitos da umidade foram incluidos; Ri tendeu para 0,1 quando dzeta tendeu para infinito e os valores de Ri aumentaram com a altura. Os gradientes adimensionais , e sao apresentados em funcao de dzeta e Ri. Em condicoes de neutralidade encontrou-se para a camada um 1,6, 0,35 e 0,4; e para a camada dois 2,0, 0,8 e 0,9. Os valores das difusividades Kh/Km e Ke/Km foram bem maiores do que 1, tanto em condicoes de instabilidade como nas de inversao. Os valores de Ke/Kh foram maiores do que 1 para condicoes de inversao e menores do que 1 em condicoes de instabilidade 91: FDB-19921216 92: FDB-MD 101: D MFN: 2805 1: SID/SCD 2: 4453 3: INPE-4453-RPI/194 4: MET 5: MP 6: m 7: [07]528.711.7 16: Arai, Nelson 16: Inoue, Joao Koiti 18: Controle politico em imagem Goes 20: 12 40: Pt 41: Pt 41: En 42: 58: DCT 59: PROSAT 62: INPE 64: dez. <1987> 66: Sao Jose dos Campos 67: BR 68: RPI 90: b 76: METEOROLOGIA 91: FDB-19930216 92: FDB-MD 101: D MFN: 2806 1: SID/SCD 2: 4469 3: INPE-4469-TDL/322 4: MET 5: T 6: m 7: [07]551.58 16: Mattos, Luiz Fernando de 18: O papel de deformacao horizontal na frontogenese na regiao sul brasileira 20: 118 40: Pt 41: Pt 41: En 42: 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: nov. <1987> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: CLIMATOLOGIA DINAMICA 87: FRONTOGENESE 87: DEFORMACAO HORIZONTAL 82: 83: Um estudo climatologico dos efeitos frontogenetico e frontolitico que os campos de deformacao horizontal e de divergencia provocam na baixa troposfera na America do Sul em particular e na regiao do planeta compreendida entre 45N e 45S e elaborado. No Hemisferio Norte as mais conhecidas regioes de fontogeneticas foram reproduzidas e coincidem satisfatoriamente no centro da America do Norte e no mar do Japao. Quatro bandas de frontogenese, orientadas de noroeste para sudeste, sao localizadas no Hemisferio Sul, e uma delas se relaciona com a bem conhecida Zona de Convergencia do Pacifico Sul. A funcao frontogenetica e de maior intensidade positiva na Patagonia no verao (janeiro), nao no inverno como acontece no Hemisferio Norte. Sobre a America do Sul, a linha que separa a area frontogenetica da frontolitica passa pelo Estado do Rio de Janeiro e tambem esta orientada de noroeste para sudeste. E feito um estudo de caso de frontogenese ocorrido de 28 a 31 de julho de 1980 sobre a Regiao Sul do Brasil. E mostrado claramente como o papel da deformacao horizontal e importante na formacao, intensificacao, orientacao e movimento da frente. Na analise da secao vertical do campo de temperatura potencial ao longo do meridiano 50 W, que passa proximo a Porto Alegre, e observada forte adveccao fria atras do sistema frontal junto a superficie e na baixa e media troposfera observa-se forte adveccao quente. No estagio da maturacao a frente se apresenta com todas as caracteristicas observadas por Sanders 91: FDB-19921216 92: FDB-MD 101: D MFN: 2808 1: SID/SCD 2: 4473 3: INPE-4473-TDL/324 4: MET 5: T 6: m 7: [07]551.46.072 16: Pereira, Claudio Solano 18: Simulacao numerica da resposta de uma frente oceanica a uma forcante atmosferica de mesoescala 20: 174 40: Pt 41: Pt 41: En 42: 50: Instituto Nacional de Pesquisas Espaciais 51: Doutor 58: SPG 58: CPTC 59: MET 62: INPE 64: dez. <1987> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: ESTUDO DO TEMPO 87: SIMULACAO NUMERICA 87: CICLONES 87: FRENTE OCEANICA 87: MODELAGEM DE ONDAS OCEANICAS 87: CONVERGENCIA SUBTROPICAL 87: FORCANTES 87: SIMULACAO NUMERICA 83: Este e um trabalho de simulacao numerica orientado para o estudo da influencia da passagem de ciclones extratropicais com as frentes frias associadas sobre frentes oceanicas livres das influencias das zonas costeiras. para isso e desenvolvido um modelo de circulacao oceanica associado e um modelo de camada de mistura, analogo ao desenvolvido por Adamec et alii, 1981. Para a solucao das equacoes sao utilizados esquemas numericos no espaco e no tempo em diferencas finitas, numa grade alternada com 5 Km de espacamento, totalizando 300 km de extensao na direcao meridional por 500 m de profundidade. Sao realizados tres experimentos numericos para investigar a resposta de uma frente oceanica similar a convergencia subtropical do Atlantico Sul devido a atuacao de um forcante atmosferica de mesoescala (frente fria). Sob o efeito da fase frontal a frente oceanica e alterada em sua estrutura termica, mas a perturbacao induzida no campo de velocidade e provavelmente maior do que aquela se o vento, mesmo mais forte, fosse constante. sob efeito da eclosao do ar frio, as estruturas termicas e dinamica do oceano superior sofrem profundas alteracoes com a intensificacao da taxa de afundamento/resfriamento da camada de mistura. Essa taxa e dependente da magnitude do gradiente termico no topo da termoclina, e da profundidade da camada de mistura. Devido a taxas diferenciais de afundamento/resfriamento, a frente oceanica pode ser deslocada aproximadamente de 20 Km de sua posicao inicial devido a um unico evento de tempestade, enquanto que sob a influencia unicamente da rotacao dos ventos a frente oceanica oscila em torno de sua posicao media inicial 91: FDB-19921216 92: FDB-MD 101: D MFN: 2809 1: sid/scd 2: 4477 3: INPE-4477 4: cea 5: MC 6: am 7: OZO 10: Kirchhoff, Volker Walter Johann Heinrich 12: GEOQUIMICA DA MEDIA E BAIXA ATMOSFERA: IMPACTOS AMBIENTAIS POR DETERIORACAO DA CAMADA DE OZONIO 14: 022 53: CONGRESSO BRASILEIRO DE GEOQUIMICA, 1 54: 30 OUT.-2 NOV. <1987> 56: Porto Alegre 58: DGE 59: OZONIO 61: 64: <1987> 68: PRE 76: GEOFISICA ESPACIAL 91: 8711 MFN: 2810 1: SID/SCD 2: 4478 3: INPE-4478 4: CEA 5: MC 6: am 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: Marinho, Edith Vasconcellos de Andrade 12: Recentes observacoes de monoxido de carbono em floresta Amazonica 14: 20 20: 20 53: Encontro Regional de Geofisica, 2 54: 25-27 nov. <1987> 56: Salvador 57: BR 58: DGE 61: 62: INPE 64: <1987> 68: PRE 90: b 76: GEOFISICA ESPACIAL 91: FDB-19940610 92: FDB-MLR 101: D MFN: 2811 1: SID/SCD 2: 4481 3: INPE-4481-PRE 4: CEA 5: S 6: as 7: 523 10: Sahai, Yogeshwar 10: Bittencourt, Jose Augusto 10: Teixeira, Nelson Rodrigues 10: Takahashi, Hisao 12: SEASONAL VARIATIONS OF TROPICAL F-REGION NIGHITGLOW EMISSIONS AND CORRELATIVE IONOSPHERIC STUDIES 14: 433-439 30: Journal of Atmospheric and Solar Terrestrial Physics 31: 51 32: 5 40: En 41: En 42: 58: DAE 59: FISAT 61: 64: <1989> 68: PRE 76: AERONOMIA 91: 8803 MFN: 2812 1: SID/SCD 2: 4483 3: INPE-4483-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Kane, Rajaram Purushottam 12: Maximum sunspot number RZ(MAX)in the coming solar cycle N.22: a revided estimate 14: 175-185 30: Solar Physics 31: 122 32: 1 40: En 41: En 42: 58: DGE 59: GEOMA 61: 64: <1989> 68: PRE 76: GEOFÖSICA ESPACIAL 83: The 12-month running mean of the geomagnetic index aa seems to have attained a minimum value of 17.5 centered at December 1986. The fresh estimate of RZ (max)is now - 165 + 35. Also, if RZ(min)is taken into consideration, the RZ(max)estimate will drop to - 130. Details of the methodology and the data used are presented 91: FDB-20000112 92: FDB-MLR MFN: 2813 1: SID/SCD 2: 4485 3: INPE-4485 4: CEA 5: MC 6: am 7: ION 10: Kantor, Ivan Jelinek 10: Muralikrishna, Polinaya 10: Abdu, Mangalahyil Ali 12: MEDIDAS COM FOGUETE DA TEMPERATURA DOS ELETRONS NA IONOSFERA SOBRE NATAL 14: 17 53: ENCONTRO REGIONAL DE GEOFISICA, 2 54: 25-27 nov. <1987> 56: Salvador 57: BR 58: DAE 59: IONO 61: 64: <1987> 68: PRE 76: AERONOMIA 91: 8711 MFN: 2816 1: SID/SCD 2: 4488 3: INPE-4488 4: CEA 5: MC 6: am 7: ION 10: Muralikrishna, Polinaya 10: Abdu, Mangalahyil Ali 12: IN-SITU PLASMA BUBBLE OBSERVATIONS ASSOCIATED WITH EQUATORIAL SPREAD-F OVER NATAL 14: 018 53: ENCONTRO REGIONAL DE GEOFISICA, 2 54: 25-27 nov. <1987> 56: Salvador 58: DAE 59: 903108 61: NC 68: PRE 76: AERONOMIA 91: 8711 MFN: 2817 1: SID/SCD 2: 4489 3: INPE-4489-PRE 4: CEA 5: S 6: as 7: [07] 10: Trivedi, Nalin Babulal 10: Kane, Rajaram Purushottam 10: Padilha, Antonio Lopes 10: Costa, Jose Marques da 12: Geomagnetic daily variations in H at Alcantara and Eusebio in the brazilian equatorial region 14: 155-157 30: Journal of Atmospheric and Terrestrial Physics 31: 51 32: 3 40: En 41: En 42: 53: Reuniao Anual da Sociedade Brasileira para o Progresso da Ciencia, 40 54: jul. <1988> 56: Sao paulo 57: BR 58: DGE 59: GEOMA 61: 64: <1988> 68: PRE 76: GEOFISICA ESPACIAL 83: Daily variations in H at Alcƒntara (dip + 3.8§)and Eus6bio (dip - 6.5§), two stations in the equatorial electrojet region in Brazil, are compared. The electrojet in NE Brazil exhibits N-S asymmetry. The discrepancy between the daily variation range in H indicates the presence of complicated ionospheric currents in this region and warrants a detailed investigation 91: 8803 MFN: 2819 1: SID/SCD 2: 4494 3: INPE-4494 4: CEA 5: MC 6: am 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: SILVA,I.M.O. 12: Recentes medidas de ozonio em floresta Amazonica 14: 19 20: 19 53: Encontro Regional de Geofisica, 2 54: 25-27 nov. <1987> 56: Salvador 57: BR 58: DGE 61: 64: <1987> 68: PRE 90: b 76: GEOFISICA ESPACIAL 91: FDB-19940610 92: FDB_MLR 101: D MFN: 2820 1: SID/SCD 2: 4499 3: INPE-4499 4: CEA 5: PM 6: m 16: Paulo, Eurico rodrigues 16: Okai, C.K. 18: Utiliza‡Æo do modelo de ionosfera internacional de refer encia IRI 86T 20: 020 40: Pt 41: Pt 42: 58: DAE 59: IONO 64: <1988> 68: NTC 76: AERONOMIA 91: 8804 MFN: 2821 1: SID/SCD 2: 4501 3: INPE-4501 4: CEA 5: MC 6: am 7: [o7] 10: Kirchhoff,Volker Walter Johann Heinrich 10: Marinho, Edith Vasconcellos de Andrade 12: Surface CO results from the ABLE-2B expedition to Amazonia 14: 322 20: 19 30: EOS, Transactions, American Geophysical Union 31: 69 32: 16 40: En 41: En 42: 53: Spring AGU Meeting 54: 16-20 May <1988> 56: Baltimore 57: USA 58: DGE 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 91: FDB-19940610 92: FDB-MLR 101: D MFN: 2822 1: SID/SCD 2: 4506 3: INPE-4506-PRE/1261 4: MET 5: S 6: as 7: [07]551.513.3 10: Kayano, Mary Toshie 10: Vadlamudi Brahmananda Rao 10: Moura, Antonio Divino 12: Tropical circulations and the associated rainfall anomalies during two contrasting years 14: 477-488 30: Journal of Climatology 31: 24 32: 14 40: En 41: En 42: 58: CPT 59: CLIMA 61: 62: INPE 64: <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 87: EL NINO 83: Secas severas observadas durante 1983 sobre grandes extensoes das areas continentais tropicais estiveram associadas com o evento EL Nino de 1982-83. Em contraste, durante 1984, precipitacoes acima da normal foram observadas sobre estas areas. Nos examinamos as circulacoes tropicais para dois anos de contraste. A intensidade e localizacao dos movimentos ascendentes e descendentes foram consistentes com as anomalias de precipitacao e tambem com as anomalias de radiacao de onda longa emitida para o espaco. Nos encontramos que a migracao norte-sul do cavado tropical desempenhou um papel importante em modular a precipitacao tropical durante estes dois anos. No contexto das nocoes teoricas sobre a circulacao tropical, presentemente aceitas, encontramos que alguma das caracteristicas observadas poderiam ser explicadas em termos de uma resposta atmosferica a fontes tropicais de calor. Nossos resultados sugerem que mudancas sazonais estiveram envolvidas no colapso do El Nino de 1982-83 91: 8804 MFN: 2823 30: Ciencia e Cultura 31: 40 32: 12 40: Pt 41: Pt 42: 58: DCT 59: MET 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921218 92: FDB-MLR 101: D 1: SID/SCD 2: 4507 3: INPE-4507-PRE/1262 4: MET 5: S 6: as 7: [07] 10: Santos, Regina Celia dos 10: Yelisetty, Viswanadham 10: Santos, Jesus Marden dos 12: Propriedades termicas do solo: um estudo de casos 14: 1227-1231 MFN: 2824 1: SID/SCD 2: 4510 3: INPE-4510-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr.,Osmar 10: Gonzalez-Alarcon, Walter Demetrio 12: Energetic electron precipitation at the South Atlantic magnetic anomaly: a review REVIEW 14: 351-365 30: Journal of Atmospheric and Terrestrial Physics 31: 51 32: 5 40: En 41: En 42: 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: SÆo Jos‚ dos campos 58: DGE 59: MAGNET 61: 64: <1989> 68: PRE 76: GEOFISICA ESPACIAL 83: This paper reviews the status of knowledge concerning energetic electron precipitation at the South Atlantic Magnetic Anomaly (SAMA). The main purpose is to place recent results in the context of the long-standing problems about energetic electron precipitation at the SAMA region. A synopsis of results achieved in the last two decades, in relation to the various physical mechanisms responsible for precipitating energetic electrons, are also presented. The major uncertainties in the understanding of the energetic electron precipitation at the SAMA include: (1)temporal and spatial precipitation changes from magnetically quiet to disturbed periods; (2)the role of wave-induced precipitation processes 91: 8804 MFN: 2825 1: SID/SCD 2: 4514 3: INPE-4514-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Pinto, Iara Regina Cardos de Almeida 10: Pinto Jr., Osmar 12: Calculo da relacao entre tmpo de relaxacao e condutividade na estratosfera 14: 191-199 30: Revista de Fisica Aplicada e Instrumentacao 31: 3 32: 3 40: Pt 41: Pt 42: 58: DGE 59: MAGNET 61: 64: <1988> 68: PRE 91: 8711 MFN: 2826 1: SID/SCD 2: 4517 3: INPE-4517-PRE 4: CEA 5: MC 6: am 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: SILVA, I.M 12: Medidas de ozonio na Peninsula Antartica 14: 21 53: Seminario sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 57: BR 58: DGE 59: OZONIO 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 91: FDB-19961118 92: FDB-MLR MFN: 2827 1: SID/SCD 2: 4518 3: INPE-4518-PRE 4: CEA 5: MC 6: am 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 12: O buraco de ozonio da Antartica: resultados recentes 14: 20 20: 20 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1. 54: 27-29 abr. <1988> 56: Sao Jose dos campos 58: DGE 59: OZONIO 61: 64: <1988> 68: PRE 76: GEOFISICA ESPACIAL 91: FDB-19881118 92: FDB-MRL MFN: 2828 1: SID/SCD 2: 4519 3: INPE-4519-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Takahashi, Hisao 10: Shai, Yogeshwar 10: Clemesha, Barclay Robert 10: Simonich, Dale Martin 10: Teixeira, Nelson Rodrigues 10: Lobo, Raquel M. 10: Eras, Agnaldo 12: Equatorial mesospheric and F-region airglow emissions observed from 4 degree S 14: 649-655 30: Planetary and Space Science 31: 37 32: 6 40: En 41: En 42: 58: DAE 61: 64: June <1989> 68: PRE 90: b 76: AERONOMIA 83: Simultaneous ground-based measurements of the atmospheric airglow emissions OI 5577, 6300 and 7774, NaD 5893 , OH (9, 4)band and O2 atmospheric (0, 1)band at 8645Ahave been made at an equatorial station, Fortaleza (3.9§S, 38.4§W, geomag. 2.1§S), Brazil, since November 1986. A microprocessor controlled multichannel tilting filter type photometer was constructed for this purpose. Hydroxyl rotational temperatures in the range 190-210 K were obtained from the 011 (9, 4)Q and R branch measurements. Surprisingly low OI5577  and NaD intensities, about 40 83: and 25 83: , respectively, of those observed at low latitude (23§S), were observed. The OH (9, 4)band intensities, however, did not show any such difference. Time lagged nocturnal intensity variations of the mesospheric emissions observed provide evidence of dynamical effects in the equatorial upper atmosphere 91: FDB-19960314 92: FDB-MLR MFN: 2829 1: SID/SCD 2: 4521 3: INPE-4521-PRE 4: CEA 5: MC 6: am 7: [07] 10: Medrano-Balboa, Rene Adalid 12: Pesquisas ionosfericas na Antartica 14: 18 53: Encontro Regional de Geofisica, 2 54: 25-27 nov. <1987> 56: Salvador 57: BR 58: DGE 59: IONO 61: 64: <1987> 68: PRE 76: AERONOMIA 91: FDB-19961118 92: FDB-MLR MFN: 2831 1: SID/SCD 2: 4523 3: INPE-4523 4: CEA 5: MC 6: am 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: Silva,I.M.O. 12: Surface ozone and ozonesounding results from the ABLE-2B Expedition to amazonia 14: 24 20: 24 40: En 41: En 42: 53: Spring AGU Meeting 54: 16-20 May <1988> 56: Baltimore 57: USA 58: DGE 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 91: FDB-19940610 92: FDB_MLR 101: D MFN: 2832 1: SID/SCD 2: 4525 3: INPE-4525-RPI/198 4: MET 5: PM 6: m 7: [07]551.511.61 16: Rodrigues,Jose Carlos 16: Lagoas,Maria Inez de Oliveira Leite 16: Lemes,Marco Antonio Maringolo 16: Stech,Jose Luiz 16: Terauchi,Eiichi 18: Um metodo de correcoes sucessivas para uso em analise meteorologico 20: 023 40: Pt 41: Pt 41: En 42: 58: CPT 58: DCT 59: ATCPT 62: INPE 64: maio <1988> 66: Sao Jose dos Campos 67: BR 68: RPI 90: b 83: Descreve-se um esquema de analise objetiva para campos meteorologicos, do tipo correcoes sucessivas.O esquema e uma versao do original usado operacionalmente pelo Japan Meteorological Agency, mas seu codigo foi totalmente refeito como uma tarefa de desenvolvimento de software aplicativo dentro do contexto de cooperacao tecnica entre o Instituto de Pesquisa Espaciais e a Japan International Cooperation Agency 91: 8804 MFN: 2833 1: SID/SCD 2: 4526 3: INPE-4526-PRE 4: CEA 5: S 6: as 10: Barroso Jr., J. 10: Jablonski, Francisco Jose 10: Quast, G.R 12: 1985 mutual phenomena of Jupiterïs satellites observed in Brazil 14: 109-115 30: Annales Geophysicae 31: 12 32: 1 Suppl. 40: En 41: En 42: 58: DAS 59: ASTRO 61: 64: Feb. <1987> 68: PRE 76: ASTROFISICA 83: We present the results of the photoelectric photometry measurements on the mutual phenomena conong the satellites of Jupiter- occurred in 1985. The data reduction method is explained and the results are discussed. The position of the satellites in their orbits was obtained with an error of 100 km 91: 8804 MFN: 2834 1: SID/SCD 2: 4527 3: INPE-4527 4: CEA 5: S 6: as 7: ASF 10: Proust, D 10: TALAVERA,A. 10: SALVADOR-SOLE,E. 10: Mazure, A. 10: Capelato, Hugo Vicente 12: New measurements of radial velocities in clusters of galaxies (*) 14: 57-61 30: Astronomy and Astrophysics. Supplement Series 31: 67 32: 1 58: DAS 59: ASTRO 61: 64: Mar. <1988> 68: PRE 76: ASTROFÖSICA 88: redshifts of galaxies 88: clusters of galaxies 83: We have obtained 101 new redshifts for 100 galaxies in ten clusters of galaxies. Data for individual galaxies are presented and the accuracy of velocities determined using four different instrumentations (located at Calar Alto, La Palma, ESO and Hawal)is discussed 91: 8804 MFN: 2835 1: SID/SCD 2: 4528 3: INPE-4528 4: CEA 5: S 6: as 7: ASF 10: MAZURE,A. 10: PROUST,D. 10: SODRE,L. 10: Capelato, Hugo Vicente 10: LUND,G. 12: MULTIPLE OBJECT REDSHIFT DETERMINATIONS IN CLUSTERS OF GALAXIES USING OPTOPUS 14: 41 30: MESSENGER 31: 47 58: DAS 59: ASTRO 61: 64: <1987> 68: PRE 76: ASTROFÖSICA 91: 8804 MFN: 2837 1: SID/SCD 2: 4530 3: INPE-4530 4: CEA 5: S 6: as 7: ASF 10: PROUST,D. 10: MAZURE,A. 10: SODRE,L. 10: Capelato, Hugo Vicente 10: LUND,G. 12: NEW MEASUREMENTS OF RADIAL VELOCITIES IN CLUSTERS OF GALAXIES - II 14: 30 30: Astronomy and Astrophysics. Supplement Series 58: DAS 59: 901105 61: ER 64: <1988> 68: PRE 91: 8804 MFN: 2838 1: SIDD/SCD 2: 4532 3: INPE-4532-PRE/1281 4: MET 5: S 6: as 7: [07]551.465.532(816.5) 10: Pereira, Claudio Solano 12: On the seasonal variability of control circulation in the Brazilizn continental shelf (29oS-35oS) 14: 285-299 30: Continental Shelf Research 31: 9 32: 3 40: En 41: En 42: 58: CPT 59: OCEAN 61: 64: <1989> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921218 92: FDB-MD 101: D MFN: 2839 1: SID 2: 4539 3: INPE-4539-PRE/1285 4: FISPLASMA 5: S 6: as 10: Chian, Abraham Chian Long 12: WAVEBREAKING CONDITION OF SPACE-CHARGE WAVES IN A RELATIVISTIC ELECTRON BEAM 14: 2561-2564 30: PHYSICAL REVIEW A, 31: 39 32: 5 58: LAP 59: 903434 61: 64: Mar. <1989> 68: PRE 76: FÖSICA DE PLASMA 83: Wavebreaking conditions, in terms of the electron velocity or the ma wave amplitude, of space-charge waves in a relativistic electron bean obtained. The discussion includes both negative-energy and positive-modes as well as wave propagation parallel and anti-parallel to the electron beam 91: 8805 MFN: 2842 1: SID/SCD 2: 4553 3: INPE-4553-RTR 5: MP 6: m 16: Santos, Elisete Rinke dos 16: BLANCO,F.G. 16: Sampaio, Marcelo 18: SISTEMA DE MINUTERIA DE SEPARACAO POR TELECOMANDO 20: 46 58: DAS 59: 903647 64: <1988> 68: RTR 76: ASTROFÖSICA 91: 8805 MFN: 2843 1: SID/SCD 2: 4566 3: INPE-4566 4: CEA 5: MP 6: m 16: Kane, Rajaram Purushottam 18: COMPARISON OF PREDICTIONS OF MAXIMUM SUNSPOT NUMBER RZ(MAX)USING AA(MIN)ONLY AND USING AA(MIN)AND RZ(MIN)TOGETHER 30: SOLAR PHYSICS, 58: DGE 59: GEOMA 61: 64: <1988> 68: RPQ 91: 8805 MFN: 2844 1: SID/SCD 2: 4567 3: INPE-4567-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Jablonski, Francisco Jos‚ 12: Intermediate polar observed from Brazil in the Last eight years 14: 199-204 21: v.3 Space Science and Tchnology and Plasma Physics 38: (Publicacao ACIESP, n.60-III) 40: En 41: En 42: 52: Academia de Ciencias do Estado de Sao Paulo 53: Japan-Brazil Symposium on Science and Technology,6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 58: DAS 59: EXTRA 61: 64: <1988> 68: PRE 76: ASTROFISICA 91: 8808 MFN: 2846 1: SID/SCD 2: 4579 3: INPE-4579-PRE 4: CEA 5: MC 6: am 7: [07]524 10: Villela Neto, Thyrso 12: Flutuacoes na radiacao cosmica de fundo 14: 12 53: Seminario sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 58: DAS 59: ASTRO 61: 64: <1988> 68: PRE 91: 8806 MFN: 2847 1: SID/SCD 2: 4580 3: INPE-4580-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Villela Neto,Thyrso 10: Jayanthi, Udaya Bhaskaram 10: Neri, Jose Angelo da Costa Ferreira 10: Braga, Joao 10: SOUZA,C.A.W 10: FIGUEIREDO FILHO,N. 12: A coded mask telescope for observations of X and gamma ray sources in the Southern sky 14: 179-183 21: v.3 Space Science and Tchnology and Plasma Physics 38: (Publicacao ACIESP n.60-III 40: En 41: En 42: 52: Academia de ciencia do estado de Sao Paulo 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 57: BR 58: DAS 59: ASTRO 61: 64: <1988> 68: PRE 76: ASTROFISICA 91: FDB-20000110 92: FDB-MLR MFN: 2848 1: SID/SCD 2: 4582 3: INPE-4582-PRE/ 4: CEA 5: MC 6: am 7: [p7] 10: Capelato, Hugo Vicente 12: Activities in astrophysics 14: 121-127 21: v.3 Space Science and Technology and Plasma Physics 38: (Publicacao ACIESP n.60-III) 40: En 41: En 42: 52: Academia de Ciencia do Estado de Sao Paulo 53: Japan-Brazil Symposium on Science Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 57: BR 58: DAS 59: ASTRO 61: 64: <1988> 68: PRE 90: b 76: ASTROFISICA 91: FDB-20000110 MFN: 2849 1: SID/SCD 2: 4583 3: INPE-4583-PRE 4: CEA 5: MC 6: am 7: [07] 10: Jayanthi, Udaya Bhaskaram 12: X and gamma ray background observations in Antarctic 14: 13 53: Seminario sobre Ciencias Atmosfericas e Espaciais do Programa antartico Brasileiro, 58: DAS 59: ASTRO 61: 64: <1988> 68: PRE 90: b 76: ASTROFÖSICA 91: 8806 MFN: 2850 1: SID/SCD 2: 4586 3: INPE-4586-TDL/332 4: MET 5: T 6: M 7: [07]551.501.5 16: Ning, Carlos Ho Shih 18: Sistema automatizado de analise meteorologica 20: 168 40: Pt 41: Pt 41: En 42: E 50: Instituto Nacional de Pesquisa Espaciais 51: Mestre 58: SPG 58: CPTC 59: CAP 64: jun. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 83: Este trabalho descreve um sistema integrado de analise automatica de campos meteorologicos, com o proposito de ser utilizado em um centro de previsao de tempo para curto (de 24 a 72 horas)e medio (de 3 a 10 dias)prazo. O sistema engloba todas as fases de pre-processamento de informacoes meteorologicas, com enfase especial para o caso de previsao numerica de tempo, apesar de encontrar aplicacao pratica tambem na previsao subjetiva. Esta fase inclui portanto a decodificacao de mensagens (SHIP; SYNOP; TEMP; PILOT e GRID), testes de controle de qualidade e aplicacao da analise objetiva para dados irregulares distribuidos. Um conjunto de subrotinas graficas faz parte do sistema e e usada para a visualizacao graficas de cartas analisadas permitindo assim a pronta interpretacao dos resultados no caso da previsao subjetiva ou para a validacao de campos usados como dados de entrada para modelos numericos de previsao. Todo trabalho e caracterizado pela: a)modularidade na estruturacao do sistema, de modo a facilitar a inclusao e/ou modificacoes de subrotinas individuais; b)portabilidade com respeito a diferentes sistemas de computacao, pois esta em FORTRAN. Espera-se que este sistema venha substituir o processo manual de confeccao de cartas, depois de adequadamente e sistematicamente testados sobre uma base de dados experimentais 91: FDB-19921214 92: FDB-MD 101: D MFN: 2851 1: SID/SCD 2: 4596 3: INPE-4596 4: CEA 5: MC 6: am 7: 524 10: Busko, Ivo Claudio 12: AGN [OIII]EMISSION LINE PROFILES: DEPENDENCIES ON GALAXY INCLINATION AND BALMER DECREMENT 14: 011 53: SYMPOSIUM COMMEMORATIVE TO THE 25TH ANNIVERSARY OF THE CERRO TOLOLO INTER-AMERICAN OBSERVATORY, 58: DAS 59: EXTRA 61: 64: <1988> 68: PRE 76: ASTROFÖSICA 91: 8806 MFN: 2852 1: SID/SCD 2: 4602 3: INPE-4602-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Correa, Ricardo Varela 12: Scientific ballooning in Brasil 14: 175-178 21: v.3 Space Science and Technology and Plasma Physics 38: (Publicacao ACIESP n.60-III 40: En 41: En 42: 52: Academia de Ciencia do estado de Sao Paulo 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 57: BR 58: DAS 59: 903647 61: 64: <1988> 68: PRE 76: ASTROFISICA 91: FDB-20000110 92: FDB-MLR MFN: 2853 1: SID/SCD 2: 4604 3: INPE-4604-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Souza,C.A.W. 10: Neri, Jose Angelo da Costa Ferreira 10: Jayanthi, Udaya Bhaskaram 12: Gamma-Ray observations of supernova SN 1987A 14: 185-190 21: v.3 Space Science and Technology and Plasma Physics 38: (Publicacao ACIESPn.60-III) 40: En 41: En 42: 52: Academia de Ciencias do estado de Sao Paulo 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 57: BR 58: DAS 59: ASTRO 61: 64: <1988> 68: PRE 76: ASTROFISICA 91: FDB-19880110 92: FDB-MLR MFN: 2854 1: SID/SCD 2: 4614 3: INPE 4: CEA 5: S 6: AS 7: 524 10: Busko, Ivo Claudio 10: Steiner, Joao Envagelista 12: Profiles of emission lines in AGN - II. Analysis of a sample of [O III]profiles 14: 1479-1495 30: Monthly Notices of the Royal Astronomical Society 31: 238 32: 4 40: n 41: En 42: 58: DAS 59: EXTRA 61: 64: june <1989> 68: PRE 76: ASTROFISICA 83: Summary. Statistical analysis of a sample of active galactic nuclei (AGN)[Oiifl 5007 high-resolution (FWHM < 130kms-1)fine profiles, complemented with other observational information, showed that line kurtosis correlates with narrow-line Balmer decrement, indicating that there is dust inside the narrow-line region. The dust affects preferentially the low-velocity emitting regions. Line kurtosis depends also on radio luminosity and presence of a broad-line region. The analysis shows a correlation between line FWHM and host galaxy inclination, pointing to the planar and aligned nature of the narrow-line region velocity field. Radio-quiet objects showed a good correlation between line FWHM and optical/radio luminosity. No correlation was found on the radio-loud ones, indicating that probably different mechanisms are at play in these two classes of objects. Late-type spirals showed, on the mean, lines with narrower FWHM than early-type ones. The effect is measurable, however, only on the low-velocity emitting regions, indicating that the velocity field in these regions may be shaped by the galaxybulge gravitational field. Line asymmetry does not appear to be a good diagnostic tool for probing the velocity field. About 23 per cent of the radio-quiet objects showed lines with red asymmetry. 91: 8806 MFN: 2855 1: SID/SCD 2: 4620 3: INPE-4620-TDL/328 4: MET 5: T 6: m 7: [07]551.521.1 16: Foster, Paulo Roberto Pelufo 18: Desenvolvimento de um modelo semi-empirico para estimativa da radiacao solar global 20: 113 40: Pt 41: Pt 41: En 42: 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: mar. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: MICROMETEOROLOGIA 87: METEOROLOGIA FISICA 83: Varias limitacoes tem sido feitas a utilizado do heliografo Campbell-Stockes pela maneira como as observacoes tem sido executadas em nosso pais. o tipo e a qualidade das tiras heliograficas usadas pelas diferentes instituicoes que operam as redes de observacoes, tem sido uma das causas de erros constantes e embutidos nas series existentes. nesta pesquisa o autor analisa as caracteristicas de doze diferentes tipos de tiras heligraficas a saber: cores diferentes, dimensoes, tempo de queima e sobre-queima, assim como o valor minimo do fluxo de radiacao necessario para inicio da queima. Ao mesmo tempo este estudo desenvolve um modelo semi-empirico para a estimativa da radiacao solar global diaria e as componentes de radiacao direta e difusa. No modelo sao usadas parametrizacoes para o espalhamento de Rayleigh e Mie e para a absorcao devida ao dioxido de carbono, vapor d'agua, ozonio e oxigenio. No modelo sao ainda considerados os fluxo devidos a absorcao e espalhamento por aerossois e nuvens. Os dados de entrada do modelo sao variaveis meteorologicas observadas na superficie tais como: pressao atmosferica, temperatura do ar, umidade relativa, visibilidade horizontal e observacoes do tipo predominante de nuvens e da cobertura do ceu. O modelo foi avaliado e testado para sete cidades, mostrando um erro relativo menor do que a precisao do piranometro (5 83: ), confirmando um bom desempenho para periodos de um mes. 91: FDB-19921216 92: FDB-MD 101: D MFN: 2856 1: SID/SCD 2: 4626 3: INPE-4626-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Dutra, Severino Luciano G. 10: Gonzalez-Alarcon, Walter Demetrio 10: Pinto Jr., Osmar 10: Pinto, Iara Regina Cardosao de Almeida 12: Medidas do campo eletrico atmosferico em periodos eletricamente perturbado e calmos na latitude de 23 graus C 53: Encontro Regional de Geofisica, 2 54: nov. <1987> 56: Salvador 58: DGE 59: MAGNET 61: 64: <1987> 68: PRE 76: GEOFÖSICA ESPACIAL 91: 8807 MFN: 2857 1: SID/SCD 2: 10005 3: INPE-10005-PRE/5563 4: MET 5: S 6: as 7: [07] 10: Kousky, Vernon Edgar 10: Cavalcanti, Iracema Fonseca Albuquerque 12: Precipitation and atmospheric circulation anomaly patterns in the South American Sector 14: 199-206 30: Revista Brasileira de Meteorologia 31: 3 32: 1 40: Pt 41: Pt 42: 58: CPT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930108 92: FDB-MLR 101: D MFN: 2858 1: SID/SCD 2: 4632 3: INPE-4632-RPE/571 4: MET 5: PM 6: m 7: [07]551.511.61 16: Hada,Kioshi 18: Equilibrio hidrostatico de tres massas concentricas em rotacao 20: 13 40: Pt 41: Pt 41: En 42: E 58: DCT 59: ATCPT 62: INPE 64: ago. <1988> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 83: Um sistema de tres massas homogeneas concentricas em rotacao com velocidade angular constante serve de modelo simples do sistema terra-oceano-atmosfera. Suas pressoes hidrostaticas e potenciais gravitacionais sao determinadas. A pressao hidrostatica P1 e o potencial gravitacional U1 dependem de R2 (R e o raio). O potencial gravitacional U4 depende de R-1. Os parametros restantes dependem de R2 e R-1. Estas pressoes e potenciais sao importantes na pesquisa das ondas de gravidade na interface atmosfera-oceano 91: FDB-19921221 92: FDB-MLR 101: D MFN: 2859 1: SID/SCD 2: 4634 3: INPE-4634-TDL/336 4: MET 5: T 6: m 7: [07]551.555 16: Marinho, Celso Valim Gomes 18: Um estudo do balanco de vorticidade, para a Regiao Tropical, durante o verao do Hemisferio Sul 20: 90 40: Pt 41: Pt 41: En 42: E 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: jun. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: METEOROLOGIA TROPICAL 82: 83: E discutido o balanco de vorticidade sobre a regiao tropical durante o verao no Hemisferio Sul. Utilizou-se dados obtidos com a integracao de um modelo baroclinico de duas camadas e dados da analise objetiva tropical operacional do "National Meteorological Center (NMC)". Encontrou-se que a adveccao de vorticidade absoluta pela componente divergente do vento, pode ter importante papel na composicao da fonte de vorticidade para as ondas de Rossby, na regiao tropical. Embora, as limitacoes do modelo nao permitam a observacao da propagacao de energia dos tropicos para latitudes mais altas, os resultados obtidos sugerem que a circulacao divergente possue papel fundamental nesta propagacao 91: FDB-19921214 92: FDB-MD 101: D MFN: 2860 1: SID/SCD 2: 4642 3: INPE-4642-PRE 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walter Demetrio 12: Effects of quiet time plasmaspheric electric fields on electron and proton precipitation 14: 2691-2695 30: Journal of Geophysical Research 31: 94 32: A3 40: En 41: En 42: 58: DGE 59: PLACIR 61: 64: Mar. <1989> 68: PRE 76: GEOFÖSICA ESPACIAL 83: The effect of the corotation and the quiet time ionospheric dynamo electric fields on the dynamics of energetic electrons and protons (with energies between 50 keV and I MeV), inside the inner magnetosphere, is investigated, using the concept of drift paths of constant effective potential. The quiet time ionospheric dynamo electric field is given by an analytic empirical model based on scatter radar observations. The corotation electric field and the Earth's magnetic field are given by analytic expressions corresponding to a centered and an eccentric dipole model. The main conclusion is that the quiet time electric fields cause a diurnal modulation of the electron and proton precipitation. At. low L values the locus in longitude of the maximum precipitation is shown to be energy dependent 91: 8908 MFN: 2861 1: SID/SCD 2: 4655 3: INPE-4655 4: CEA 5: MP 6: m 7: 53 16: Almeida, L.C 18: NOTAS PRATICAS SOBRE UTILIZACAO DE BATERIAS EM VOOS DE BALOES ESTRATOSFERICOS 20: 52 58: DAS 59: 903647 64: <1988> 68: RTR 91: 8808 MFN: 2862 1: SID/SCD 2: 4656 3: INPE-4556 4: CEA 5: MP 6: m 7: 621 16: Santos, Elisete Rinke dos 16: GONZALEZ-B,F. 16: SILVA,E.R. 18: CONVERSOR DA TELEMETRIA 20: 42 58: DAS 59: 908312 64: <1988> 68: RTR 76: ASTROFÖSICA 91: 8808 MFN: 2863 1: SID/SCD 2: 4660 3: INPE-4660-PRE/1363 4: MET 5: S 6: as 7: [07]551.584.2 10: Franchito, Sergio Henrique 10: Cavalcanti, Iracema Fonseca Albuquerque 12: Uma revisao geral sobre as circulacoes locais e seus efeitos no clima regional 14: 34 30: Ciencia e Cultura 40: Pt 41: Pt 42: 58: CPT 58: DCT 59: PRECLI 61: 62: INPE 64: <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 83: Apresenta-se uma revisao das circulacoes locais, com enfase destas no clima regional. E feita uma discussao geral das caracteristicas das brisas maritima-terrestre e da sua interacao com o escoamento medio, levando-se em conta varios estudos realizados, tanto observacionais como de simulacao numerica. Estes estudos mostram importancia destas circulacoes no clima regional, nao so devido ao escoamento de ar caracteristico como pela precipitacao associada. Sao discutidos, tambem aspectos teoricos e observacionais referentes as circulacoes vale-montanha, que sao responsaveis por grande parte da precipitacao que ocorre em regioes situadas em um vale 91: FDB-19921019 92: FDB-MLR 101: D 110: 1 110: 1 110: 1 110: 1 111: Arquivo 111: Aquisicao 111: Sergio H.Franchito 111: Iracema F.A.Cavalcanti 112: SCD 112: SID 112: CPT 112: CPT 120: D 120: D 120: D 120: D MFN: 2864 1: SID/SCD 2: 4661 3: INPE-4661-RPE/573 4: MET 5: MP 6: m 7: [07]551.50 16: Setzer, Alberto Waingort 16: Pereira Jr., Alfredo da Costa 18: Algumas medias meteorologias do Vale do Paraiba e proximidades 19: Some meteorological means of the Paraiba Valley and vicinity 20: 51 40: Pt 41: Pt 41: En 42: 58: DSM 59: WEFAX 62: INPE 64: ago. <1988> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: METEOROLOGIA 83: Este trabalho apresenta, em tabelas, dados meteorologicos medios menasais das seguintes cidades do Vale do Pariba, Sp, ou proximas a ele: Mogi das cruzes, Sao Jose dos Campos, Taubate, Tremembe e Pindamonhangaba. Os seguintes parametros estao tabelados: temperaturas maximas e minimas, e as 12, 18 e 24h TMG; precipitacao; pressao atmosferica as 12h; umidade relativa, cobertura de nuvens, porcentagem de calmarias e velocidade e direcao dos ventos as 12, 18e 14h. Os dados utilizados, fornecidos pelo INEMET, cobrem no maximo o periodo de 1961-a 1978. estao incluidas tambem medias dos dados da estacao do INPE, Sao Jose dos Campos, SP, de 1979 a 1988, e dados de 2 anos de tipos de dispersao de plumas para uma localidade proxima a Jacarei, SP 91: FDB-19921215 92: FDB-MD 101: D MFN: 2866 1: SID/SCD 2: 4668 3: INPE-4668-PRE/ 4: CEA 5: MC 6: am 10: Marinho, Edith Vasconcellos de Andrade 10: Kirchhoff, Volker Walter Johann Heinrich 12: MEDIDAS DE MONOXIDO DE CARBONO EM DIFERENTES ECOSSISTEMAS BRASILEIROS 53: Encontro Regional de Geof¡sica, 2 54: 25-27 nov. <1987> 56: Salvador 58: DGE 59: 90841X 61: 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: PRE 76: GEOFISICA ESPACIAL 91: 8711 MFN: 2867 1: SID/SCD 2: 4669 3: INPE-4669 4: CEA 5: MC 6: am 7: 523 10: Mendes Jr., Odim 10: Pinto Jr., Osmar 12: Algoritmo para o estudo do movimento de particulas na magnetosfera interna da terra 14: 19 53: Encontro Regional de Geofisica, 2 54: 25-27 nov. <1987> 56: Salvador 57: BR 58: DGE 59: PROJETO MAGHEL 68: PRE 76: GEOFISICA ESPACIAL 87: MAGNETOSFERA MFN: 2868 1: sid/scd 2: 4676 3: INPE-4676 4: CEA 5: S 6: as 7: 523 10: Gonzalez-Alarcon, Walter Dem‚trio 10: TSURUTANI,B.T. 10: Gonzalez, Alicia Luisa Clua 10: SMITH,E.J. 10: TANG,F. 10: ARASOFU,S.I. 12: SOLAR WIND-MAGNETOSPHERE COUPLING DURING INTENSE MAGNETIC STORM (1978-1979) 14: 8835 30: Journal Geophysical Research 31: 94 32: A7 58: DGE 59: MAGNET 61: 64: <1989> 68: PRE 76: GEOFÖSICA ESPACIAL 91: 8808 MFN: 2869 1: SID/SCD 2: 4678 3: INPE-4678 4: CEA 5: MC 6: am 7: 524 10: Busko, Ivo Claudio 10: Steiner, Joao Envagelista 12: PROFILES OF EMISSION LINES IN AGN PART III: ON THE BROAD HA COMPONENT OF IC 5063, IC 5135 AND NGC 2992 14: 005 53: IAU SYMPOSIUM 134 ACTIVE GALACTIC NUCLEI 54: 15-18 Aug. <1988> 56: Sata Cruz 58: DAS 59: EXTRA 61: 64: <1988> 68: PRE 76: ASTROFÖSICA 91: 8808 MFN: 2872 58: DCM 59: SONSAT 61: 64: jun.-dez. <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921217 92: FDB-MD 101: D 1: SID/SCD 2: 4689 3: INPE-4689-PRE/1381 4: MET 5: S 6: as 7: [07]551.534 10: Nakamura, Yukitaka 10: Yamazaki, Yoshihiro 10: Cabral, Maria Roseli 10: Ning, Carlos Ho Shih 12: Medidas de ozonio total por meio de satelite no setor brasileiro 14: 49-54 30: Revista Brasileira de Geofisica 31: 6 32: 2 40: Pt 41: Pt 41: En 42: MFN: 2873 1: SID/SCD 2: 4690 3: INPE-4690-PRE/ 4: CEA 5: S 6: as 10: Clemesha, Barclay Robert 10: Batista, Paulo Prado 10: Simonich, Dale Martin 12: CONCERNING THE ORIGIN OF ENHANCED SODIUM LAYERS 14: 1267-1270 30: Geophysical Research Leters 31: 15 32: 11 40: En 41: En 42: 58: DAE 59: FISAT 61: 64: <1988> 68: PRE 76: AERONOMIA 83: A mechanism is proposed for the formation of the thin layers of enhanced sodium concentration observed in the atmospheric sodium layer. The proposed mechanism involves the wind shear distortion of initially thick sodium clouds of limited horizontal extent, originally produced by the deposition of material of extraterrestrial origin. This mechanism explains almost all the observed characteristics of the enhanced layers, including their height of occurrence, small vertical extent, vertical motion, rapid growth and decay and highly variable duration 91: 8807 MFN: 2875 1: SID/SCD 2: 4694 3: INPE-4694-RPE/575 4: MET 5: T 6: m 7: [07] 16: Silva Filho, Vicente de Paula 18: Um estudo dos perfis de vento sob condicoes de atmosfera quase neutra e estavel sobre uma floresta de terra firme 20: 103 40: Pt 41: Pt 42: 50: Instituto de Pesquisa Espaciais 51: Mestre 58: DCM 59: MET 62: INPE 64: jan. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: MICROMETEOROLOGIA 87: MICROMETEOROLOGIA 87: FLORESTAS 87: TERRA FIRME 87: PERFIS DE VENTO 87: MOMENTUM 83: Perfis de vento e temperatura potencial, coletados na Amazonia Central sob condicoes de atmosfera quase-neutra e estavel, sao analisados. O comprimento de rugosidade (z0)e o deslocamento do plano zero(d), obtidos atraves do metodo de Robinson, apresentaram os valores 1,38m e 32,73m, respectivamente. Medidas simultaneas de fluxos de momentum e perfis de vento permitiram o calculo do valor da constante de von-Krman (k=o,38). Foi encontrada similaridade dentre os perfis de vento e temperatura, sob condicoes de quase-neutralidade. A curvatura dos perfis foi analisadas atraves dos numeros de Deacon. A relacao entre Bu e Ri mostra uma queda no valor de Bu para um aumento de Ri sob condicoes de moderada estabilidade, correspondendo a uma variacao na razao Kh/Km. A forma log-linear permanece valida relativamente ate alto grau de estabilidade. Desvio desta lei ocorrem, para o caso da reserva Ducke, a aproximadamente 41m do solo. A constante de proporcionalidade na equacao log-linear foi de aproximadamente 2,6, o que implica um Ri critico de 0,38. A frequencia de Brunt-Vaisala foi calculada, e os resultados concordaram com valores experimentais obtidos anteriormente 91: 8809 MFN: 2876 1: SID/SCD 2: 4698 3: INPE-4698-RPE/576 4: MET 5: MP 6: m 7: [07]551.511.61 16: Hada, Kioshi 18: Tracado do campo vetorial com emblema DO INPE 20: 21 40: Pt 41: Pt 41: En 42: 58: DCT 62: INPE 64: set. <1988> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: METEOROLOGIA 83: Um programa para a plotagem dos campos vetoriais nos pontos de grade em projecao Mercator Equatorial, uma teoria e um programa para o tracado do Emblema do INPE sao apresentados 91: 8809 101: D MFN: 2877 1: SID/SCD 2: 4699 3: INPE-4699-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Gonzalez-Alarcon, Walter Demetrio 10: Gonzalez, Alicia Luisa Clua 12: Comments on periodicities in the interplanetary magnetic field polarity by Villante and P. Francia 14: 4142 30: Journal of Geophysical Research 31: 94 32: 2 40: En 41: En 42: 58: DGE 59: MAGNET 61: 64: <1989> 68: PRE 76: GEOFÖSICA ESPACIAL 83: Using ISEE-3 observations of the interplanetary plasma and magnetic field it is shown that the substorm reported by Sauvaud et al. (1987), that occurred at 22:40 UT of March 4, 1979, was directly driven by the solar wind. This result was found when the solar wind ram pressure is taken into account in the solar wind magnetosphere coupling function and is in conflict with the result found by Sauvaud et al., who claimed that the energy necessary to drive this substorm came form a magnetospheric reservoir (stored energy 91: 8809 MFN: 2878 1: SID/SCD 2: 4700 3: INPE-4700-PRE 4: CEA 5: S 6: as 7: [07] 10: Gonzalez-Alarcon, Walter Demetrio 10: Pinto Jr., Osmar 12: Solar terrestrial processes at the South Atlantic Anomaly: from balloon observations to a brazilian satellite 14: 194 30: EOS Transactions. American Geophysical Union 31: 70 32: 13 58: DGE 59: MAGNET 61: 64: <1989> 68: PRE 76: GEOFISICA ESPACIAL 91: 8809 MFN: 2879 1: SID/SCD 2: 4701 3: INPE-4701-PRE 4: CEA 5: S 6: as 7: [07] 10: Gonzalez-Alarcon, Walter Demetrio 10: Gonzalez, Alicia Luisa Clua 12: Comments on geomagnetic response to magnetic clouds by Robert M. Wilson 14: 1485-1487 30: Planetary and Space Science 31: 36 32: 12 40: En 41: En 42: 58: DGE 61: 64: <1988> 68: PRE 90: b 76: GEOFÖSICA ESPACIAL 83: The paper "Geomagnetic Response to Magnetic Clouds" by Wilson (1987)tries to show the existence of an association of geomagnetic storm intervals with the passage of interplanetary magnetic clouds at the Earth's magnetosphere. This association is shown through a superposed epoch analysis of the interplanetary magnetic field (IMF)-B. component and the geomagnetic storm D,, index for 19 cloud events that occurred in the time interval 1973-1978. Although such association is actually shown in the paper, two fundamental aspects about the "magnetic cloud-storm relationship" needs further clarification. As commented in the introduction of Wilson's paper and in most of the papers that deal with magnetic clouds (e.g. Klein and Burlaga, 1982), it is known that the IMF-BZ component of the cloud occasionally rotates from a southward to a northward (SN)direction, because at other times (we suppose with similar occurrence probability?)it rotates in the opposite way. However, from what is shown in Wilsonïs paper one can interpret that the northward-southward (NS)rotation never occurs! In fact, it would be very interesting to know the type of Dst-behaviour related to clouds with NS rotations and contrast it with that already obtained for clouds with SN rotations 91: FDB-19960314 92: FDB-MLR MFN: 2880 1: SID/SCD 2: 4702 3: INPE-4702-PRE/1387 4: CEA 5: S 6: as 7: [07]523 10: Abdu, Mangalathayil Ali 10: Muralikrishna, Polinaya 10: Paula, Eurico Rodrigues de 10: Kantor, Ivan Jelinek 12: Rocket-borne measurements of equatorial ionospheric electron densities and their comparison with IRI-10 predictions 14: (8)41-(8)44 30: Advances in Space Research 31: 10 32: 8 40: Pt 41: Pt 42: 53: Cospar Planary Meeting, 27 54: 18-28 July <1988> 56: Espoo 57: FL 58: DAE 61: 64: <1990> 68: PRE 90: b 76: AERONOMIA 87: BOLHAS DE PLASMA 87: IONOSFERA EQUATORIAL 87: SONDA 88: ELECTRON DENSITY PROFILES 88: INTERNACIONAL REFERENCE IONOSPHERE 88: IRI 88: SLIM 88: EQUATORIAL ATMOSPHERIC 88: ROCKETS 82: 83: Three experiments were conducted using high frequency capacitance probes carried on board SONDA III rockets launched off the coast of Natal (6 degrees S, 36 degrees W), Brasil. Electron-density height profiles from the two of the experiments, one daytime, and one nighttime, are representative of quiet equatorial ionospheric conditions whereas for the third experiment the rocket was launched into a nighttime ionosphere that was disturbed by a developing plasma bubble event. Agreement between experimental results and the IRI predictions for the quiet day and night densities varies with height. Comparisons are also made with electron densities obtained from the semi-empirical Low Latitude Ionospheric Model (SLIM) 91: FDB-19960307 92: FDB-MLR MFN: 2881 1: SID/SCD 2: 4711 3: INPE-4711-PRE/1392 4: MET 5: S 6: as 7: [07]551.507.362.2 10: Yamazaki, Yoshihiro 10: Nakamura, Yukitaka 10: Cabral, Maria Roseli 10: Ning, Carlos Ho Shih 12: Experimento de intercomparacao: sondagens Tovs e radiossondagens 14: 157-166 30: Revista Brasileira de Meteorologia 31: 2 32: 1 40: Pt 41: Pt 41: En 42: 58: CPT 59: SONSAT 61: 64: dez. <1987> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921217 92: FDB-MD 101: D MFN: 2883 1: SID/SCD 2: 4714 3: INPE-4714-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Muralikrishna, Polinaya 10: Abdu, Mangalathayil Ali 10: Kantor,Ivan Jelinek 12: Rocket-borne langmuir probe response to an applied periodic potencial 14: 271-179 21: v.3 Space Science and Tchnology and Plasma Physics 38: (Publicacao ACIESP n.60-III) 52: Academia de Ciencia do Estado de Sao Paulo 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 58: DAE 59: CION 61: 64: <1988> 68: PRE 90: b 76: AERONOMIA 91: 8810 MFN: 2884 1: SID/SCD 2: 4715 3: INPE-4715-PRE/1395 4: MET 5: MC 6: am 7: [07]551513.3 10: Kayano, Mary Toshie 12: Circulacoes tropical e as associadas anomalias de precipitacoes em dois anos de contraste 14: 6 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Meteorologia, 5 54: nov. <1988> 56: Rio de Janeiro 57: BR 58: CPT 59: PRECLI 61: 62: INPE 64: <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 83: Secas severas observadas durante 1983 sobre grandes extensoes de areas continentais tropicais estiveram associadas com o evento El Nino de 1982-83. Em contraste, durante 1984 precipitacoes acima da media foram observadas sobre estas areas. As circulacoes tropicais para dois anos das contraste sao examinadas neste artigo. A intensidade e a localizacao dos movimentos ascendentes e descendentes foram consistentes com a anomalias de precipitacao. As nocoes teoricas sobre as circulacoes tropicais induzidas por fontes de calor, presentemente aceitas, podem ser aplicadas para explicar algumas das caracteristicas observadas 91: FDB-19922010 92: FDB-MDF 101: D 110: 1 110: 1 110: 1 111: Arquivo 111: Aquisicao 111: Mary T.Kayano 112: SCD 112: SID 112: CPT 120: D 120: D 120: D MFN: 2885 1: SID/SCD 2: 4718 3: INPE-47118 4: CEA 5: PM 6: M 7: 621 16: Santos, Elisete Rinke dos 16: GONZALEZ-B,F. 16: CHAGAS,J.R. 18: RELATORIO DO RECEPTOR-DECODIFICADOR DE TELECOMANDO DE BORDO 20: 000 58: DAS 59: 903647 64: <1988> 68: RTR 76: ASTROFÖSICA 91: 8810 MFN: 2886 1: SID/SCD 2: 4720 3: INPE-4720-PRE/1397 4: CEA 5: S 6: as 7: [07]523 10: Clemesha, Barclay Robert 12: Stratification processes in the atmospheric sodium layer: observations and theory 14: (10)59-(10)70 30: Advances in Space Research 31: 10 32: 10 40: En 41: En 42: 53: COSPAR-ESPOO, 27 54: 18-29 July <1988> 56: Helsinkei 57: FI 58: DAE 61: 64: <1990> 68: PRE 90: b 76: AERONOMIA 88: ATMOSPHERIC LASERS 88: ATMOSPHERIC TIDES 88: SODIUM LAYER 83: The mechanisms responsible for the formation of the alkali metal layers seem to be quite different in nature to those responsible for other atmospheric layers. In discussing the sodium layer in this context we must include both the mechanisms responsible for its basic production and the phenomena which produce structures within the layer. Although there is little doubt that the sodium layer owes its origin to the deposition into the atmosphere of extra-terrestrial material, how this deposition leads to the formation of a narrow layer of free sodium atoms is still an open question. With respect to the formation of structures within the layer it is clear that tides and gravity waves play an important role, although there can be little doubt that other factors are also at work. Of particular interest is the observation of thin layers having peak densities about an order of magnitude greater than normal, and a width an order of magnitude less. A number of mechanisms for the formation of these layers have been discussed in the literature, including direct meteor deposition, ion layer formation via the windshear mechanism, and evaporation from aerosol layers. None of these mechanisms has been analysed in detail, however, and the origin of these layers is still open to debate 91: 19960311 92: FDB-MLR MFN: 2887 1: SID/SCD 2: 4721 3: INPE-4721-PRE 4: CEA 5: MC 6: am 7: [07] 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walter Demetrio 12: X ray measurements in the atmospheric environmental of Brazil 53: International Symposium on Radiotion Physics 54: Oct. <1988> 56: Sao Paulo 57: BR 58: DGE 59: PLACIR 61: 64: <1988> 68: PRE 76: GEOFÖSICA ESPACIAL 91: 8810 MFN: 2888 1: SID/SCD 2: 4722 3: INPE-4722 4: CEA 5: MC 6: am 7: 550 10: Kantor, Ivan Jelinek 10: Muralikrishna, Polinaya 10: Abdu, Mangalahyil Ali. 12: COMPARISON OF IONOSPHERIC ELECTRON TEMPERATURE ROCKET MEASUREMENTS OVER NATAL, BRAZIL, WITH IRI MODEL 14: 017 53: COSPAR-ESPOO, 27., FINLAND, JULY 18-29, 1988 54: 18-29 July <1988> 56: Finland 58: DAE 59: IOFOT 61: 64: <1988> 68: PRE 76: AERONOMIA 91: 8807 MFN: 2890 1: SID/SCD 2: 4724 3: INPE-4724-PRE 4: MET 5: MC 6: am 7: [07] 10: Yelisetty,V. 10: Silva FILHO,V.P. 10: Manzi,A.O. 10: Sa,L.D.A 12: Analysis of diabatic wind and temperature profiles over the Amazonian Forest 14: 10 20: 10 53: International Association of hydrological Sciences of the International Union of Geodesy and Geophysics IAHS Third Scientific Assembly 54: 10-19 May <1989> 56: Maryland 57: USA 58: DCT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930817 92: FDB-MLR 101: D MFN: 2891 1: SID/SCD 2: 4725 3: INPE-4725 4: CEA 5: MP 6: m 7: 523 10: Abdu, Mangalahyil Ali 10: VALENZUELA,A. 10: BUCHAU,J. 14: 034 16: Abdu, Mangalahyil Ali 16: Sobral, Jos‚ Humberto andrade 18: RADIO WAVE TRACING OF GROWTH AND MOTION OF IRREGULARITIES INITIATED BY THE COLOURED BUBBLE EXPERIMENTS 58: DAE 59: IONO 61: 64: <1988> 68: RPQ 91: 8811 MFN: 2892 1: SCD 2: 4726 3: INPE-4726 4: CEA 5: MC 6: am 7: 523 10: Zamlutti, Carlos Jose 12: the spectral anal‡ysis approach to middle atmospheric modelling 14: 011 40: En 41: En 42: 53: COSPAR-ESPOO, 27 54: 18-29 July <1988> 56: Finland 58: DAE 59: IONO 61: 64: <1988< 68: PRE 76: AERONOMIA 91: 8808 MFN: 2893 1: SID/SCD 2: 4727 3: INPE-4727-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Zamlutti, Carlos Jose 10: Sobral, Jose Humberto Andrade 10: Abdu, Mangalathayil Ali 12: An overview on the equatorial electrojet theoretical grounds 14: 264-270 21: v.3 Space Science and Tchnology and Plasma Physics 52: Academia de Ciencia do Estado de Sao Paulo 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 57: BR 58: DAS 59: IONO 61: 64: <1988> 68: PRE 76: AERONOMIA 91: FDB-20000110 MFN: 2895 1: SID/SCD 2: 4730 3: INPE-4730 4: CEA 5: MP 6: m 7: 621 16: FERNANDES,J.O. 16: Santos, Elisete Rinke dos 18: MICROPROCESSADOR DE SUPERVISAO DA EXPERIENCIA PULSAR 20: 36 58: DAS 59: 903647 64: <1988> 68: RTR 76: ASTROFÖSICA 91: 8811 MFN: 2897 1: SID/SCD 2: 4732 3: INPE-4732-PRE/1408 4: CEA 5: MP 6: m 7: 553 16: ARMELIN,M.J.A. 16: VASCONCELLOS,M.B.A. 16: Pereira, Enio Bueno 16: SIRCILLI NETO,F. 18: DETERMINATION OF IRIDIUM CONCENTRATIONS IN SEDIMENTARY ROCKS AND IN THE GEOLOGICAL PCC-1 BY RADIOCHEMICAL NEUTRON ACTIVATION ANALYSIS 20: 9 58: DGE 59: ASTER 64: <1988> 68: RPQ 91: 8812 MFN: 2898 1: SID/SCD 2: 4735 3: INPE-4735-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walter Demetrio 10: Pinto, Iara Regina Cardoso de Almeida 10: Mendes Jr., Odim 10: Mendes J 12: Effects of corotstion electric field on the dynamics of energetic particles in an asymmetric planetary magnetic field 14: 515-518 30: Annales Geophysicae 31: 7 32: 5 40: En 41: En 42: 58: DGE 59: PLACIR 61: 64: <1989> 68: PRE 76: GEOFÖSICA ESPACIAL 83: The effects of the corotation electric field on the dynamics of energetic particles in the inner magnetosphere of the Earth and Jupiter is investigated, using the concept of drift paths of constant effective potential and assuming that the particles corotate rigidly with the planet. We restrict the study to equatorial particles and also assume that, in both planets, the magnetic field in the inner magnetosphere can be well described by an eccentric dipole model. We found that several different types of trajectories do occur, going from those encircling the planet to those restricted to a given longitude sector, this behaviour being dependent of the charge (electron or proton)and energy (10 keV to 1 MeV for Earth and I MeV to I GeV for Jupiter)of the particles. These results are discussed in the context of the possible implications on the morphology of the particle precipitation 91: 8811 MFN: 2900 91: 8812 18: Evolucao para amplitude finita das ondas baroclinicas na atmosfera e no oceano 20: 311 40: Pt 41: Pt 42: 50: Instituto de Pesquisas Espaciais 51: Doutor 58: SPG 58: CPTC 59: MET 62: INPE 64: ago. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: METEOROLOGIA DINAMICA 87: INSTABILIDADE BAROCLINICA 87: NUVENS 87: FRENTES 87: MODELAGEM DE ONDAS OCEANICAS 83: Desenvolveu-se dois modelos multi-niveis: um modelo linear quase-geostrofico e outro nao-linear de balanco com atrito do tipo Rayleigh e resfriamento newtoniano. Ambos os modelos consideram a liberacao de calor latente, parametrizada com o esquema "wave-CISK" de Mak e sao usadas para estudar as propriedades dos disturbios baroclinicos na atmosfera. os modelos com algumas modificacoes sao aplicados para ondas baroclinicas no oceano. Do ponto de vista linear, as perturbacoes atmosfericas de escala intermediaria, com nuvens virgula associadas (1000 - 2000 km), observadas sobre o Pacifico Norte e America do Sul sul-central, e os disturbios oceanicos de mesoescala (200 - 400 km), encontrados nas proximidades da zona de confluencia das correntes do Brasil e das Malvinas, parecem ser gerados por instabilidade baroclinica. No caso atmosferico, a instabilidade baroclinica e modificada pelos efeitos da umidade. Efeitos nao geostroficos e nao-lineares devidos a uma unica onda original sao superimpostos sobre os campos lineares dados pela onda mais instavel, tanto para o caso atmosferico como para o oceanico. Caracteristicas muito semelhantes as observadas sao obtidas na evolucao para amplitude finita. No caso atmosferico, a liberacao de calor latente mostrou-se um fator fundamental na obtencao de estruturas horizontal e vertical realistas das nuvens. A evolucao de aneis termicos no caso oceanico e muito bem reproduzida pelo modelo nao-linear. Em ambos os casos atmosferico e oceanico, o estagio de saturacao nao e alcancado, uma vez que a realimentacao do estado basico termico nao e incluida. Sao tambem bem reproduzidas as caracteristicas das frentes atmosfericas pelo modelo nao-linear completo 1: SID/SCD 2: 4752 3: INPE-4752-TDL/346 4: MET 5: T 6: m 7: [07] 16: Bonatti, Jose Paulo MFN: 2901 1: SID/SCD 2: 4756 3: INPE-4756 4: CEA 5: S 6: as 10: Dias, M.P. 10: Steiner, Joao Envagelista 12: The photometric period of Nova Muscae 1983 14: L41-L43 30: Astrophysical Journal 31: 339 32: 1Part 2 58: DAS 59: EXTRA 61: 64: <1988> 68: PRE 76: ASTROFISICA 91: 8812 MFN: 2902 1: SID/SCD 2: 4757 3: INPE-4757 4: CEA 5: S 6: as 10: Strauss, M.A. 10: Kirhakos, S.D. 10: Yahil, A 12: A newly discovered Iras QSO close to the galactic plane 14: L45-L48 30: Astrophysical Journal 31: 332 32: 2 Part 2 40: En 41: En 42: 58: DGE 59: EXTRA 61: 64: Sep. <1988> 68: PRE 88: headings 88: infrared 88: sources 88: quasars 83: As part of a complete survey of IRAS galaxies close to the Galactic plane, we have discovered a bright QSO, at a redshift z = 0.0571 and a Galactic latitude of -9§2. Its observed V magnitude is 13.55, making it the fourth brightest QSO in the sky, and the Galactic reddening is estimated to be E(B-V) 0.23, giving the QSO an absolute magnitude of Mv = -24.87(4pr2vFv 5x1011LT;H0=50 km s-1Mpc-1). Direct imaging and spectroscopy show that the object is surrounded by low surface-brightness fuzz, with strong lines of [O III]. The fuzz is some 2.4 mag fainter than the QSO in R. Unlike other QSOs recently discovered by IRAS, this object does not have a strong infrared excess, and has normal optical colors for a nearby QSO 91: 8812 MFN: 2903 1: SID/SCD 2: 4759 3: INPE-4759 4: CEA 5: MC 6: am 7: 524 10: KEPLER,S.O. 10: Steiner, Joao Envagelista 10: Jablonski, Francisco Jos‚ 12: THE OPTICAL SPECTRA OF V803 CEN 14: 006 53: IAV COLLOQUIUM WHITE DWARFS 54: 15-19 Aug. <1988> 56: Hanover 58: DAS 59: EXTRA 61: 64: <1988> 68: PRE 76: ASTROFÖSICA 91: 8812 MFN: 2904 1: SID/SCD 2: 4764 3: INPE-4764 4: CEA 5: MP 6: M 7: 524 16: Steiner, Joao Envagelista 16: Jablonski, Francisco Jos‚ 16: Cieslinski, Deonisio 16: WILLIAMS,R.E 18: V617 SAGITTARRII: A V SAGITTAE LIKE SYSTEM 58: DAS 59: EXTRA 64: <1988> 68: RPQ 76: ASTROFÖSICA 91: 8811 MFN: 2905 1: SID/SCD 2: 4767 3: INPE-4767 4: CEA 5: S 6: as 7: 523 10: Sodre Jr., L. 10: Capelato, Hugo Vicente 10: Steiner, Joao Envagelista 10: Mazure, A 12: ON THE KINEMATICAL BEHAVIOR OF GALAXIES IN CLUSTERS 14: 1279-1282 30: Astronomical Journal 31: 97 32: 5 58: DAS 59: EXTRA 61: 64: May <1989> 68: PRE 76: ASTROFÖSICA 83: We have analyzed the sample of 15 galaxy clusters published by Dressler and Shectman (1988a)to search for a trend for spiral and irregular galaxies to have greater velocity dispersion than the ellipticals and lenticulars. We have shown that this trend is highly significant, with a probability of less than 0.05 83: that it may result from statistical fluctuations in our sample of clusters. An analogous but much less significant effect appears also to be present between lenticular and elliptical galaxies. We interpret these results as evidence that late-type galaxies are still in the process of infalling towards the virialized cluster cores 91: 8812 MFN: 2906 1: SID/SCD 2: 4785 3: INPE-4785 4: CEA 5: T 6: m 7: 539 16: SERBETO,A.P.B. 18: ANALISE HAMILTONIANA E SIMULACAO DE LASERS DE ELECTRONS LIVRES 20: 142 50: Instituto de Pesquisas Espaciais 51: Doutor 58: 4308 59: 88202X 64: <1988> 68: TDI 91: 8901 MFN: 2907 1: SID/SCD 2: 4786 3: INPE-4786-TDL/352 4: MET 5: T 6: m 7: [07]551.509.524.2(815/816) 16: Bertolossi, Rogerio 18: Um estudo comparativo entre a velocidade vertical e o vetor Q de Hoskins, com aplicacao em sistemas sinoticos tipicos do sul E sudeste do Brasil 20: 82 40: Pt 41: Pt 41: En 42: E 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: nov. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: METEOROLOGIA DINAMICA 83: Nesta pesquisa foram calculados campos de velocidade vertical utilizando a Equacao da Continuidade, a Equacao Omega na sua forma tradicional e com as abordagens de Trenberth (1978)e Hosshins et al. (1978). Alem da forcante dinamica, foram tambem considerados os efeitos da liberacao de calor latente, da topografia e do atrito. Para a utilizacao destes metodos, algoritmos numericos foram desenvolvidos e aplicados em tres casos, onde estao presentes sistemas tipicos do Sul do Brasil. Da comparacao entre os campos de velocidade vertical e a divergencia do vetor Q de Hoskins, observou-se que as formulacoes de Trenberth (1978)e Hoskins (1978)conduzem a uma melhor definicao dos campos que a Equacao Omega em sua forma tradicional. O vetor Q permite que o movimento vertical seja inferido com confiabilidade equivalente ou ainda maior que as formulacoes citadas para o calculo da velocidade vertical e, portanto, coloca-se como uma boa alternativa para este fim. A funcao frontogenetica determinada com base no Vetor Q mostrou boa concordancia com a frontogenese observada num dos casos estudados, como se verificou com auxilio das imagens de cobertura de nuvens obtidas por satelite e das cartas sinoticas, e representou satisfatoriamente o deslocamento das frentes detectadas nos outros dois casos estudados. Desta forma, com base neste estudo sugere-se o uso operacional do vetor Q e da Funcao Frontogenetica nos Orgaos Setoriais da Meteorologia Nacional 91: 8908 MFN: 2908 1: SID/SCD 2: 4787 3: INPE-4787 4: CEA 5: T 6: m 7: 523 16: SABALISCK,N.S.P. 18: MAPAS NO CONTINUO DE RADIO EM 22GHZ DAS REGIOES HII RCW57 E W47 20: 96 50: Instituto de Pesquisas Espaciais 51: Mestre 58: 4006 59: 88202X 64: <1988> 68: TDI 76: ASTROFÖSICA 91: 8901 MFN: 2909 1: SID/SCD 2: 4796 3: INPE-4796 4: MET 5: S 6: as 10: VIEIRA,B.M. 10: FORTI,M.C. 10: TAVARES,M.F.M. 10: MOREIRA-NORDEMANN,L.M. 12: NA, CA, K, MG E C1 ATMOSFERICOS NA REGIAO LESTE DO ESTADO DE SAO PAULO 30: REVISTA BRASILEIRA DE GEOFISICA, 58: 3298 59: 907642 61: 64: <1989> 68: PRE 91: 8908 MFN: 2910 1: SID/SCD 2: 4799 3: INPE-4799-NTI/291 4: MET 5: MP 6: M 7: [07] 16: Carvalho,P.R.A. 16: Stevenson, Merritt Raymond 18: Sistema PCD-ARGOS para boia oceanografica 20: 50 40: Pt 41: Pt 42: 58: DCT 62: INPE 64: ago. <1989> 66: Sao Jose dos Campos 67: BR 68: NTI 90: b 76: OCEANOGRAFIA 87: BOIAS DE DERIVA 87: BOIAS OCEANOGRAFICA 87: SISTEMA ARGOS 87: PLATAFORMA DE COLETA DE DADOS 91: FDB-19940511 92: FDB-MLR 101: D 110: 1 111: IO 112: USP 120: D 113: 15.04.94 MFN: 2912 1: SID/SCD 2: 4807 3: INPE-4807 4: CEA 5: PM 6: M 7: 517 16: Medrano-Balboa, Rene Adalid 18: METODOS MATEMATICOS DA FISICA VI: TRANSFORMADAS INTEGRAIS 20: 103 58: DAE 59: 903108 64: <1989> 68: PUD 76: AERONOMIA 91: 8904 MFN: 2913 1: SID/SCD 2: 4808 3: INPE-4808-PRE/1454 4: MET 5: MP 6: m 7: [07]551.507.362.2:551.521.31 16: Arai, Nelson 18: Relatorio final do Subprojeto RADSAT 20: 33 40: Pt 41: Pt 41: En 42: 58: DCM 59: RADSAT 62: INPE 64: out. <1988> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2914 1: SID/SCD 2: 4810 3: INPE-4810 4: CEA 5: T 6: m 7: 523 16: RABACA,D.F.M. 18: ESTUDO DE GALAXIAS PECULIARES DO HEMISFERIO SUL 20: 64 50: Instituto de Pesquisas Espaciais 51: Mestre 58: 4006 59: 88202X 64: <1988> 68: TDI 91: 8906 MFN: 2916 1: SID/SCD 2: 4812 3: INPE-4812-TDL/359 4: MET 5: T 6: M 7: [07]551.515.1 16: Ferreira, Celeste da Conceicao 18: Ciclogenesis e ciclone extratropicais na regiao sul-sudeste do Brasil e suas Influencia no tempo 20: 118 40: Pt 41: Pt 41: En 42: E 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: nov. <1988> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: METEOROLOGIA SINOTICA 87: CICLOGENESES 87: CICLONES 87: GOES-E 82: 83: Atraves da analise das foto-imagens do satelite geostacionario GOES-E, no periodo de 1980-1986 uma climatologia das ciclogeneses e dos vortices ciclonicos que cruzam o continente sul americano ao sul de 15 S e entre 30-70 W foi apresentada. Verificou-se que no ano de 1980 e tambem no de 1983, ano de intenso EL NINO, a ocorrencia de ciclogeneses foi 20 83: maior que nos outros anos. A distribuicao geografica mostrou sobre o continente , no Uruguai e na regiao sul do Brasil, e sobre o litoral leste os locais mais favoraveis as ocorrencias de ciclogeneses. O periodo mais propicio a ciclogeneses e aos vortices transientes foi o verao e o menos o inverno. As direcoes mais frequentes foram para sudeste, vortices provenientes de ciclogeneses; enquanto que os vortices transientes tiverem direcoes mais comuns para leste e maiores velocidades. Comparando-se as medias de precipitacao e as ocorrencias de ciclogeneses observou-se que houve uma grande influencia da ocorrencia de ciclogeneses na precipitacao. O estudo de dois casos identificou a instabilidade baroclinica (no inverno)e a hidrodinamica (no verao)como os principais mecanismo para a genese destes vortices ciclonicos 91: 8906 MFN: 2917 58: DCT 61: 64: nov. <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921230 92: FDB-MLR 101: D 1: SID/SCD 2: 4819 3: INPE-4819-PRE/1454 4: MET 5: S 6: as 7: [07]551.521.14(811.3) 10: Andre, Romisio Geraldo Bouhid 10: Yelisetty, Viswanadham 10: Sa, Leonardo Deane de Abreu 10: Manzi, Antonio Ocimar 12: Characteristic parameters for the Amazonian Forest 14: 19 30: Forest Ecology and Management Journal 40: En 41: En 42: MFN: 2918 1: sid/scd 2: 4823 3: INPE-4823 4: CEA 5: T 6: m 16: SOUZA,C.A.W. 18: OBSERVACOES NA FAIXA DE RAIOS X E GAMA DA SUPERNOVA SN 1987A USANDO DETECTORES PHOSWICH BGO - CSI (T1) 20: 111 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DAS 59: 88202X 64: <1989> 68: TDI 76: ASTROFÖSICA 91: 8906 MFN: 2919 1: SID/SCD 2: 4844 3: INPE-4844-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Scalise Jr.,Eugenio 10: Vale, Jose Luis Monteiro 12: New water vapor masers in the Southern Hemisphere 14: 191-198 20: v.3 Space Science and Tchnology and Plasma Physics 38: (Publicacao ACIESP, n. 60-III) 52: Academia de Ciencia do Estado de Sao Paulo 53: Japan-Brazil Symposium Scienc and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 58: DAS 59: 88202X 61: 64: <1988> 68: PRE 76: ASTROFISICA 91: FDB-20000110 92: FDB-MLR MFN: 2920 1: SID/SCD 2: 4851 3: INPE-4851 4: CEA 5: T 6: m 16: Fagundes, Paulo Roberto 18: OBSERVACOES SIMULTANEAS DAS EMISSOES DE OI (5577), 02A (0,1), NAD (5893)E OH (9,4)E AS TEMPERATURAS ROTACIONAIS TO2 E TOH NA ALTA ATMOSFERA 20: 132 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DAE 59: 88202X 64: <1988> 68: TDI 76: AERONOMIA 91: 8908 MFN: 2921 91: FDB-19921216 92: FDB-MD 101: D 1: SID/SCD 2: 4865 3: INPE-4865-TDL/376 4: MET 5: T 6: m 7: [07]551.58(811.3) 16: Cohen, Julia Clarinda Paiva 18: Um estudo observacional de linhas de instabilidade na Amazonia 20: 174 40: Pt 41: Pt 41: En 42: 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: fev. <1989> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: METEOROLOGIA DINAMICA 87: LINHAS DE INSTABILIDADE 87: JATO DE LESTE 82: 83: Bandas de nuvens convectivas formam-se na costa norte-nordeste da America do Sul. Algumas destas bandas movem-se continente adentro como uma linha de instabilidade (LI). As LIs sem propagacao sao denominadas LI Costeira (LIC)e as Lis com propagacao sao identificadas por LIP. Ha duas categorias de LIPs: (a)com deslocamento horizontal entre 170 e 400 km a partir da costa (LIP1)e (b)com penetracao horizontal alem de 400 km (LIP2). a maxima frequencia das LIs ocorre entre abril e agosto. A velocidade media de propagacao da LIP1 e LIP2 e 12 e 16 m/s, respectivamente. A maioria das LIs sao observadas ao sul da ZCIT no Atlantico (ZCITA). A LIP2 e mais frequente quando a ZCITA esta bem estabelecida e a LIP1 nao e dependente da condicao da ZCITA. A dimensao media destes sistemas e 1400 km de comprimento e 170 km de largura. O jato de leste nos baixos niveis e um elemento dominante na propagacao da LI. As LIPs estao associados com uma camada de jato de leste com velocidade quase constante. As caracteristicas temodinamicas e dinamicas antes e apos a passagem de uma LIP2 sao similares as estruturas observadas na LIs em outras regioes MFN: 2922 1: SID/SCD 2: 4887 3: INPE-4887-TDL/378 4: MET 5: T 6: M 7: [07]551.509.54(812/814) 16: Uvo, Cintia Regina Bertacchi 18: A zona de convergencia Intertropical (ZCIT)e sua relacao com a precipitacao da regiao norte do nordeste Brasileiro 20: 99 40: Pt 41: Pt 41: En 42: E 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 58: CPTC 59: MET 64: ago. <1989> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: ZCIT 87: PRECIPITACAO (METEOROLOGIA) 82: 83: Apresenta-se neste trabalho uma analise observacional da influencia do deslocamento da Zona de Convergencia Intertropical (ZCIT)do oceano Atlantico sobre a precipitacao na regiao norte do Nordeste do Brasil.l Foi escolhida uma area de estudo compreendida entre 20 S, 30 N e 60 W e a costa oeste da Africa, area esta em que foram analisados elementos como as tensoes decisalhamento superficial zonal e meridional, a temperatura da superficie do mar e a posicao da banda de maxima cobertura de nuvens, usada como representativa da posicaoda ZCIT. Como representantes da precipitacao sobre o Nordeste foram usados indices de precipitacao padronizados mensais, sazonais e anuais, calculados a partir de 116 estacoes espalhadas pelo Nordeste. Analises semelhantes foram feitas para um conjunto de anos secos e de anos chuvosos, e mostraram que e o tempo em que a ZCIT permanece proxima de suas posicoes mais ao sul que define a qualidade da estacao chuvosa, pois define a duracao desta 91: FDB-19921214 92: FDB-MD 101: D 110: 1 111: Cintia Uvo 112: CPTC 120: I 113: 28.04.94 MFN: 2923 1: SID/SCD 2: 4892 3: INPE-4892 4: CEA 5: MC 6: am 10: Nordemann, Daniel Jean Roger 10: Pereira, Enio Bueno 12: RADON CONCENTRATION OVER THE BRAZILIAN AMAZON BASIN DURING THE WET SEASON (BELEM-MANAUS GTE-2B FLIGHT OF APRIL 24, 1987) 14: 10 53: AGU SPRING MEETING, BALTIMORE 54: May <1988> 56: Baltimore 58: 4308 59: RADON 61: 68: PRE 76: GEOFISICA ESPACIAL 91: 8908 MFN: 2924 1: SID/SCD 2: 4912 3: INPE-4912-PRE 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr, Osmar 10: Gonzalez-Alarcon, Walter Demetrio 12: The roce of landau resonance in energetic electron preciptation from the inner radiation belt 14: 12027-12030 30: Journal of Geophysical research 31: 94 32: A9 40: En 41: En 42: 58: DGE 59: PLACIR 61: 64: Sept. <1989> 68: PRE 76: GEOFÖSICA ESPACIAL 83: In this report the role of Landau resonance between energetic electrons and plasmaspheric hiss waves at the inner radiation belt is investigated. These nearly structureless turbulent waves have been observed to exist at the inner belt over a large range of latitudes and to propagate with a wide distribution of wave normal angles relative to the geomagnetic field. For these waves, we show that at low L values, Landau resonance with electrons near their mirror points can give pitch angle diffusion coefficients larger than those expected for equivalent cyclotron resonances at the equator. Because of this fact, and because Landau resonance can occur at practically all electron energies that characterize this region (< 1 MeV), we suggest that this resonance may be regarded as the most important process to explain the enhancement in energetic electron precipitation at the inner belt, at least during the recovery phase of storms, when the plasmaspheric hiss population seems to be intensified (e.g., Tsurutani et al., 1975) 91: 8909 MFN: 2925 1: SID/SCD 2: 4920 3: INPE-4920-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walter Demetrio 12: South Atlantic magnetic anomaly for how long? 14: 17 30: EOS, Transactions American Geophysical Union 31: 70 32: 2 40: En 41: En 42: 58: DGE 59: PLACIR 61: 64: <1989> 68: PRE 76: GEOFISICA ESPACIAL 91: 8909 MFN: 2926 1: SID/SCD 2: 4923 3: INPE-4923-TDL/383 4: MET 5: T 6: m 7: [07]551.514.4 16: Carvalho, Ana Maria Gusmao de 18: Conexoes entre a circulacao em altitude e a conveccao sobre a America do Sul 20: 121 40: Pt 41: Pt 41: En 42: 50: Instituto Nacional de Pesquisas Espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: fev. <1989> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: CIENCIAS METEOROLOGICAS 87: CLIMATOLOGIA DINAMICA 87: BALANCO DE VORTICIDADE 87: RADIACAO DE ONDAS LONGAS 87: CONVECCAO 82: 83: Este trabalho investiga as conexoes entre a circulacao na alta troposfera da America do Sul e a conveccao sobre a Amazonia. Foram utilizadas medias mensais em pontos de grade de vorticidade, radiacao de onda longa e precipitacao para o periodo de 1974 a 1984. Os resultados obtidos mostram que: (i)a intensidade da circulacao na Alta da Bolivia e o cavado a NE dela estao diretamente correlacionadas; (ii)a Alta da Bolivia e no cavado a NE dela estao direta e inversamente correlacionados com a intensidade da conveccao Amazonica, respectivamente, (iii)existem evidencias de que a Zona de convergencia do Atlantico Sul (ZCAS)e importante para o mecanismo de conexao entre a Alta da bolivia e o cavado a NE; (iv)o temo beta na equacao do balanco da vorticidade e bastante relevante no mecanismo dinamico de conexao entre a Alta da Bolivia e o cavado em altitude a NE dela 91: FDB-19921216 92: FDB-MD 101: D 110: 1 111: Marley C. lima 112: SPG 120: V 113: 10.05.94 MFN: 2933 1: SID/SCD 2: 4985 3: INPE-4985-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Kane, Rajaram Purushottam 10: Trivedi, Nalin Babulal 10: Padilha, Antonio Lopes 10: Costa, Jose Marques da 12: Comparison of quiet time geomagnetic daily variation (sq)in H Component at Eusebio and Cachoeira Paulista 53: Reuniao Anual da Sociedade Brasileira para o Progresso da Ciencia, 54: jul. <1988> 56: Sao Paulo 57: BR 58: DGE 59: GEOMA 61: 64: <1988> 68: PRE 76: GEOFISICA ESPACIAL 91: FDB-20000107 92: FDB-MLR MFN: 2934 1: SID/SCD 2: 4995 3: INPE-4995 4: CEA 5: S 6: as 7: 523 10: Pereira, Enio Bueno 10: SILVA,H.E. 12: ATMOSPHERIC RANDON MEASUREMENTS BY ELECTROSTATIC PRESIPITATION 14: 14 30: Nuclear Instruments end Methods 58: DGE 59: RADON 61: 64: <1989> 68: PRE 91: 8912 MFN: 2936 1: SID/SCD 2: 4999 3: INPE-4999 4: CEA 5: MC 6: am 10: Bittencourt, Jose Augusto 10: Sahai, Yogeshwar 12: LOW LATITUDE F-REGION DYNAMICAL PROCESSES FROM ATOMIC OXYGEN NIGHTGLOW EMISSION 53: LATIN-AMERICAN CONFERENCE ON SPACE GEOPHYSICS, 1 54: 21-23 nov. <1988> 56: µguas de Lindoia 57: BR 58: DAE 59: 908223 61: 64: <1988> 68: PRE 76: AERONOMIA 91: 8912 MFN: 2937 1: SID/SCD 2: 5000 3: INPE-5000 4: CEA 5: MP 6: m 7: 514 16: Medrano-Balboa, Rene Adalid 18: CAMPOS VETORIAIS, ESPACOS LINEARES E TENSORES NA FISICA PARTE III - ANALISE TENSORIAL E SUAS APLICACOES 20: 230 58: DAE 59: 903108 64: <1989> 68: PUD 76: AERONOMIA 91: 8911 MFN: 2938 1: SID 2: 5009 3: INPE-5009-PRE 4: CEA 5: S 6: as 10: Scalise Jr.,Eugenio 10: RODRIGUES,L.F. 10: MENDOZA-TORRES,E. 12: WATER-VAPOR MASER EMISSION FROM BRIGHT, UNASSOCIATED IRAS POINT SOURCES 14: 105-109 30: Astronomy and Astrpphysics 31: 221 32: 1 58: DAS 59: RADIO 61: 64: Aug. <1989> 68: PRE 76: ASTROFÖSICA 88: H2O masers 88: infrared sources 88: star formation 83: We present a list of bright IRAS point sources selected with the following criteria: i)flux larger than 1000 Jy at 60 or 100 æm, ii)no association reported in any of the 37 catalogs listed in Table V. H. 1 of the IRAS Explanatory Supplement, and iii)no water maser emission reported previously. We searched for H2O maser emission toward these objects at Itapetinga (southern hemisphere)and Haystack (northern hemisphere), detecting 23 new sources. From their frequent association with water maser emission, their IRAS colors, their galactic distribution, and their estimated large luminosities, these bright, unassociated IRAS point sources seem to be, in most cases, sites of recent OB star formation. We believe that these sources were not detected previously because their cm radio continuum fluxes are expected to be a few tenths of a Jy, below the sensitivity of radio continuum surveys of the galactic 91: 8912 MFN: 2939 1: SID/SCD 2: 5011 3: INPE-5011 4: CEA 5: T 6: m 16: RABACA,C.R. 18: QUASARES DE ESPECTRO PLANO E O TURN-OVER ESPECTRAL A ALTAS FREQUENCIAS 20: 107 50: Instituto de Pesquisas espaciais 51: Mestre 58: 4006 59: 908118 64: <1988> 68: TDI 91: 8912 MFN: 2940 1: SID/SCD 2: 5025 3: INPE-5025-PRE/1564 4: CEA 5: S 6: as 7: [07]550 10: Batista, Inez Staciarini 10: Abdu, Mangalathayil Ali 10: Medrano-Balboa, Rene Adalid 12: Magnetic activity effects on range type spread-F and vertical plasma drifts at Fortaleza and Huancayo as studied through ionosonde measurements and theoretical modelling 14: 357-364 30: Annales Geophysicae 31: 8 32: 5 40: En 41: En 42: 53: Latin American Conference on Space Geophysics, 1 54: 21-25 Nov. <1988> 56: µguas de Lindoias 57: BR 58: DAE 61: 64: <1990> 68: PRE 90: b 76: AERONOMIA 87: IONOSSONDA 87: medi‡Æo 88: IONOSONDS 88: MEASUREMENT 88: SPREAD F 82: 83: Ionosonde measurements are used to study the effects of magnetic activity on spread F and on the postsunset enhancement (Vzmax)of the F region vertical plasma drift at two longitudinally separated stations, Fortaleza and Huancayo, situated along the magnetic equator, in the American sector, during a period of high solar activity. The analysis is made for three different levels of magnetic activity. It is seen that, during the winter, Vzmax and the range spread F occurrence (RSFO)in the premidnight hours systematically increase with Kp at both locations. During the summer and equinoxes the RSFO decreases with magnetic activity in the premidnight hours and increases in the postmidnight hours, the increase being generally more pronounced during very disturbed periods. On the other hand Vzmax deduced from the ionosonde measurements shows almost no variation with magnetic activity during equinoxes and summer although during individual months of those periods both increases and decreases are seen. With the help of theoretical model calculations for the electrodynamical coupling between the equatorial E and F regions it is shown that a disturbance F region dynamo associated neutral wind could account for the variations of Vzmax with magnetic activity, that are consistently observed during winter months. On the other hand, competing influences of penetration electric fields, and/or those of disturbance meridional winds, seem to mask the expected gross effect of zonal winds in the summer and equinoctial months 91: FDB-19960311 92: FDB-MLR MFN: 2941 1: SCD/SID 2: 5028 3: INPE-5028 4: CEA 5: S 6: as 7: 523 10: Braga, JoÆo 12: FORMACAO DE IMAGENS EM ASTROFISICA DE ALTA ENERGIA 14: 45-58 30: Boletim da SAB 31: 11 32: 2 40: Pt 41: Pt 42: 58: DAS 59: ASTRO 61: 64: <1989> 68: PRE 76: ASTROFÖSICA 91: 9003 MFN: 2942 1: SID/SCD 2: 5029 3: INPE-5029 4: CEA 5: S 6: as 10: Braga, JoÆo 10: CORBIN,E. 10: GRINDLAY,J.E. 12: CALIBRATION AND PERFORMACE OF THE ENERGETIC X-RAY IMAGING TELESCOPE EXPERIMENT 14: 871 30: IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 31: 36 32: : 58: DAS 59: ASTRO 61: 64: <1989> 68: PRE 76: ASTROFÖSICA 91: 9003 MFN: 2946 1: SID/SCD 2: 5056 3: INPE-5056 4: CEA 5: S 6: as 7: 523 10: POPPEL,W.G.L. 10: Scalise Jr.,Eugenio 12: RESULTS OF A SEARCH FOR H20-MASERS IN THE P OPHIUCHI CLOUD 14: 121-125 30: Revista Brasileira de Astronomia e Astrof¡sica 31: 17 32: : 40: En 41: En 42: 58: DAS 59: RADIO 61: 64: <1989> 68: PRE 76: ASTROFÖCA> 91: 8904 MFN: 2947 1: SID/SCD 2: 5057 3: INPE-5057-PRE 4: CEA 5: MC 6: am 10: Batista, Paulo Prado 10: Clemesha, Barclay Robert 10: Simonich, Dale Martin 12: INTERNAL GRAVITY WAVE STRUCTURES OBSERVED IN THE MESOSPHERIC SODIUM LAYER AT 23 GRAUS S 53: Globmet Symposium, 2 54: July <1988> 55: Kazan 56: USSR 58: DAE 59: FISAT 61: 64: <1988> 68: PRE 76: AERONOMIA 91: 8807 MFN: 2948 1: SID/SCD 2: 5059 3: INPE-5059-TDL/405 4: CEA 5: T 6: m 7: 523 16: Lattari, Cleiton Joni Benetti 18: EXPLORACAO DA ATIVIDADE SOLAR DE BAIXO NIVEL (ATIVIDADE DE PEQUENA INTENSIDADE)NA COROA E CROMOSFERA 20: 88 50: DISSERTACAO DE MESTRADO EM CIENCIAS ESPACIAIS, RADIOASTRONOMIA E FISICA SOLAR, APROVADA EM 1989 51: Mestre 58: UPG 58: DAS 59: CEA 64: <1989> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 91: 9004 MFN: 2949 1: SID/SCD 2: 5064 3: INPE-5064-PRE/1590 4: COMP 5: MC 6: am 7: [07]681.3.019 10: Oliveira, Carlos Alberto de 12: Linguistica textual e representacao do conhecimento: um enfoque 53: Congresso de Linguistica do grupo de Estudos Linguisticos 54: <1989> 56: Lorena 57: BR 58: LAC 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930125 92: FDB-MLR 101: D MFN: 2952 91: 8911 1: SID/SCD 2: 5083 3: INPE-5083-TDL/417 4: MET 5: T 6: m 7: [07]551.511.61 16: Franchito, Sergio Henrique 18: Experimentos numericos com modelos climaticos media zonal 20: 199 40: Pt 41: Pt 41: En 42: E 50: Instituto Nacional de Pesquisas Espaciais 51: Doutor 58: SPG 58: DCM 59: MET 64: nov. <1989> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 76: CIENCIAS METEOROLOGICAS 87: CLIMATOLOGIA DINAMICA 87: EL NINO 87: LA NINA 82: 83: Sao desenvolvidos dois modelos estatisticos-dinamicos, um quase-geostrofico e outro de equacoes primitivas, para realizar experimentos numericos considerado a atmosfera media zonal, com enfase nos processos climaticos referentes ao Hemisferio Sul. Tais experimentos consideram os efeitos no clima causados por anomalias de temperatura da superficie do mar (TSM)e por alteracoes no estado da superficie. Os experimentos com respeito as anomalias de TSM consideram as situacoes de "El Nino", "La Nina" e do biopolo envolvendo centros de anomalias positivas e negativas. Os resultados mostram que na situacao de "El Nino o jato sub-tropical e a circulacao de Hadley sao intensificados e a temperatura da superficie aumenta na regiao pertubada. Situacao oposta ocorre no caso de "La Nina". No experimento do bipolo ha uma intensificacao da celula de Hadley no Hemisferio Norte (regiao da anomalias positivas)e um enfraquecimento no ramo ascendente no Hemisferio Sul (regiao de anomalias negativas). No experimento de modificacao do estado da superficie e considerada a interacao entre o estado geobotanico e o clima, que constitui um mecanismo de bio-realimentacao. Sao feitos experimentos de desmatamento, desertificacao e irrigacao. Os resultados mostram que a mudanca na evapotranspiracao e o efeito dominante em relacao a alteracao no albedo da superficie em regular as mudancas na temperatura da superficie. Um aspecto notavel nestes experimentos incluindo bio-realimentacao e que todas as variacoes (experimento com pertubacao menos controle)sao menores no Hemisferio Sul, o que pode ser aplicado pela menor quantidade de terra existente nesta regiao MFN: 2953 1: SID/SCD 2: 5085 3: INPE-5085-NTE/293 4: MET 5: MP 6: m 7: [07]681.3.06:551.5 16: Sundfeld, Sofia 18: Recepcao e visualizacao de imagens WEFAX: 4 bits com micros linha IBM-PC - manual do operador 20: 32 40: Pt 41: Pt 41: En 42: 58: DME 59: WEFAX 62: INPE 64: nov. <1989> 66: Sao Jose dos Campos 67: BR 68: NTC 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2954 1: SID/SCD 2: 5086 3: INPE-5086-NTE/294 4: MET 5: MP 6: m 7: [07]681.3.06:551.5 16: Sundfeld, Sofia 18: Recepcao e visualizacao de imagens WEFAX: 4 bits com micros linha "IBM-PC" - manual do usuario 20: 28 40: Pt 41: Pt 41: En 42: 58: DME 59: WEFAX 62: INPE 64: nov. <1989> 66: Sao Jose dos Campos 67: BR 68: NTC 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2969 30: Revista Brasileira de Meteorologia 31: 3 32: 2 58: DGE 59: GEOMA 61: 64: <1988> 68: PRE 90: b 91: FDB-19930105 92: FDB-MLR 101: D 1: SID/SCD 2: 5106 3: INPE-5106-PRE/1607 4: CEA 5: S 6: as 7: [07]550.3 10: KANE, Rajaram Purushottam 10: Souza, Elesbao G. de 12: Power spectrum analysis of various annual rainfall series in the Eastern part of Brazil 14: 257-267 MFN: 2987 1: SID 2: 5141 3: INPE-5141-PRE/ 4: CEA 5: S 6: as 10: BECK,R. LOISEAU,N. HUMMEL,E. BERKHUIJSEN,E.M. GRAVE,R. WIELEBINSKI,R. 12: HIGH-RESOLUTION POLARIZATION OBSERVATIONS OF M31 I. STRUCTURE OF THE MAGNETIC FIELD IN THE SOUTHWESTERN ARM 14: 58 30: Astronomy and Astrophysics 31: 222 58: DAS 59: RADIO 61: 64: <1989> 68: PRE 91: 9009 MFN: 2990 1: SID/SCD 2: 5144 3: INPE-5144 4: CEA 5: MC 6: am 7: 524 10: ANDERNACH,H. 12: REDSHIFTS OF A THOUSAND ABELL CLUSTERS 14: 8 53: WORKSHOP LARGE STRUCTURE AND PECULIAR MOTIONS IN THE UNIVERSE 54: 22-27 May <1989> 56: Rio de Janeiro 58: DAS 59: 907316 64: <1989> 68: PRE 91: 9009 MFN: 3066 1: SID/SCD 2: 8823 3: INPE-8823-PRE/4542 4: CEA 5: MC 6: am 10: Muralikrishna, P. 10: Abdu, Mangalathyil Ali 10: Kantor, Ivan Jalinex 12: Rocket-borne Langmuir probe response to an applied periodic potencial 14: 271-279 38: v.3 Space Science and Tchnology and Plasma Physics 40: En 41: En 42: 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: SÆo Jos‚ dos Campos 58: DAE 59: ASTRO 61: 64: <1988> 68: PRE 76: AERONOMIA 87: provas eletrost ticas 87: instrumentosembarcados em foguetes 87: medi‡Æo no local 87: densidade do plasma 87: temperatura do plasma 87: revestimentos do plasma 87: contamina‡Æo 88: electrostatic probes 88: rocket borne instruments 88: in situ measurements 88: plasma density 88: plasma temperature 88: plasma sheaths 88: contaminations 83: A Langmuir Probe (LP)payload designed and developed at Instituto de Pesquisas Espaciais (INPE/MCT)was flown on-board a SONDA III rocket at 2259 hrs (LST)on October 31, 1986 from the Centro de Lan‡amento da Barreira do Inferno in Natal, RN, Brasil, under a collaborative programme between INPE and Instituto de Atividades Espaciais (IAE/CTA). The rocket reached an apogee of about 444 km and the LP payload functioned satisfactorily during the ascent as well as descent of the rocket. A sweep voltage varying between -IV and +4V in a period of about 2.6 seconds was applied to the LP sensor. As the applied voltage increased from -IV to +4V, the LP sensor current first showed an increase, reached a saturation level, and then, though the sensor potential increased towards a steady value, the current showed a systematic decrease. This sensor current characteristic also showed a clear dependence on altitude and hence on the ambient plasma parameters. Possible physical mechanisms responsible for these LP response characteristics are analysed and discussed here MFN: 3110 1: SID/SCD 2: 4815 3: INPE-4815-TDL/361 4: ETES 5: T 6: m 16: Negreiros de Paiva, Ricardo 18: Determina‡Æo aut“noma de ¢rbita usando o GPS 20: 230 42: 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DMC 62: INPE 64: nov. <1988> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: determina‡Æo aut“noma de ¢rbita 87: sistemas de rastreio 87: GPS 87: mecƒnica orbital 91: 7607 MFN: 3122 1: SID/SCD 2: 8840 3: INPE-8840-PRE/4559 4: CEA 5: S 6: as 10: Gonzalez, Alicia Luisa Clua 10: Gonzalez-Alarcon, Walter Demetrio 12: Comment on inferred and measured interplanetary sector structure -reply 14: 7017-7018 30: Journal Geophysical Research 31: 94 32: A6 58: DGE 59: ASTRO 61: 64: June <1989> 68: PRE 76: GEOFÖSICA ESPACIAL 87: campos magn‚ticos interplanet rios 87: polaridade 87: medi‡Æo 88: interplanetary magnetic fields 88: polarity 88: measurement 83: We apologize for not having included references to the works by Fougere [1974]; and Fougere and Russell [1975]in our paper "Periodicities in the Interplanetary Magnetic Field Polarity" [Gonzalez and Gonzalez, 1987]. As summarized in the companion comments [Fougere, this issue], Fougere [1974]claimed that caution should be taken for any association of the inferred interplanetary magnetic field (IMF)polarity values during the presatellite era, such as those obtained by Svalgaard [1968]and Mansurov [1969], with the actual values that would have been measured by a satellite. However, it has not been the aim of the Gonzalez and Gonzalez [1987]paper to judge the validity of the Svalgaard-Mansurov index as an indicator of the actual IMF polarity, since this matter has been extensively discussed before [e.g., Wilcox, 1972; Svalgaard, 1975a, 1975b, 1976, Fairfield, 1977; Matsushita, 1979; Matsushita and Trotter, 1980 91: 7807 MFN: 3125 1: SID/SCD 2: 9682 3: INPE-9682-PRE/5281 4: ETES 5: S 6: as 10: Prado, Antonio Fernando Bertachini de Almeida 10: Rios Neto, Atair 12: Suboptimal and hybrid numerical solutin schemes for orbit transfer maneuvers 14: 82-88 30: SBA Controle e Automa‡Æo 31: 4 32: 2 40: En 41: En 42: 53: Space Dynamics International Symposium 54: 6-10 Nov. <1989> 58: DCM 61: 64: maio-jun. <1994> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: transferˆncia de orbital 87: simula‡Æo numerica 88: orbit transfer 88: ornital maneuvers 88: fuel consumption 83: Este trabalho considera o problema de transferˆncia de ¢rbita de um ve¡culo espacial com m¡nimo consumo de combust¡vel, em termos de sele‡Æo, implementa‡Æo e testes num‚ricos das solu‡äes escolhidas. 0 principal objetivo ‚ obter as leis de controle para as manobras necess rias ao Sat‚lite Brasileiro de Sensoriamento Remoto. Depois de uma pesquisa bibliogr fica e an lise dos trabalhos dispon¡veis, foram selecionados dois m‚todos de solu‡Æo do problema. No primeiro, o problema de controle ¢timo associado ‚ tratado numericamente atrav‚s de um m‚todo de busca direta combinado com controle sub-¢t¡mo parametrizado. No segundo, o m‚todo h¡brido ‚ usado e a determina‡Æo dos valores iniciais dos multiplicadores de Lagrange (necess rias na resolu‡Æo das equa‡äes dadas pelas condi‡äes necess rias de primeira ordem para um m¡nimo local)‚ transformada num problema de busca direta. Nos dois m‚todos, a solu‡Æo num‚rica em cada intera‡Æo ‚ reduzida a um problema de programa‡Æo nÆo-linear, que ‚ resolvida pelo m‚todo da proje‡Æo do gradiente. 0 ve¡culo espacial ‚ considerado em movimento Kepleriano controlado apenas pelo empuxo, que ‚ assumido de magnitude constante (alta ou baixa)e operando em modo liga-desliga. Resultados de simula‡äes num‚ricas sÆo apresentados. In this, paper the problem of spacecraft orbit transfer with minimum fuel, consumption is considered, in terms of selecting, implementing and testing numerical solutions. The main goal is to obtain the control laws for the maneuvers required by the Brazilian Remote Sensing Satellite. After a search in the literature and analysis of the results available, one selects two schemes of solution to the problem. In the first one the associated optimal control, problem is numerically treated by using a direct: search approach together with suboptimal parameterized control. In the second one, a hybrid approach is used where the determination of the initial values of the Lagrange multipliers (to solve the equations given by the first order necessary conditions for a local minimum transformed in a direct search problem. In both schemes numerical solution of the problem in each iteration is reduced to one of nonlinear programming, which is then solved with: gradient projection method. The spacecraft is supposed to be in Keplerian motion controlled by the thrusts, that are assumed to be of fixed magnitude (either low or high)and operating in an on-off mode. Results of simulations are also presented MFN: 4275 1: SID/SCD 2: 1988 3: INPE-1988 4: CEA 5: MP 6: m 16: Schaal, Ricardo Enersto 16: Piazza, Liliane Rizzo 16: Kaufmann, Pierre 16: HADANO,R. 16: KOPPE,E.H. 18: DETERMINACAO DA OPACIDADE ATMOSFERICA POR TECNICA RADIOMETRICA: RESULTADOS QUALITATIVOS PRELIMINARES NA SERRA DA MANTIQUEIRA E NA SERRA GERAL 58: CRAAE 59: RADIO 64: <1981> 68: RPQ 76: RADIOASTRONOMIA 91: 8110 MFN: 4584 1: SID/SCD 2: 2535 3: INPE-2535 4: ETES 5: MP 6: m 16: Santana, Carlos Eduardo 16: Castro, A.M.H. 16: Rogrigues, J.A. 16: Marshall, Paulo Melo 16: Aranha, Helcio 16: Cividanes, Lucio Baptista Trannin 18: Receptor de TV FM em 4 GHZ (discri‡Æo t‚cnica) 38: 58: DMC 59: 331015 62: INPE 64: <1989> 67: SÆo Jos‚ dos Campos 68: RTR MFN: 4870 1: SID/SCD 2: 3030 3: INPE-3030-PRE 4: FISMAT 5: S 6: as 7: [07] 10: Perondi, Leonel Fernando 10: Fabbri, Mauricio 10: Ferreira da Silva, Antonio 12: Density of states with randomly distributed donormonovalent imputities in two dimensions: an analytical 14: 1101-1105 30: Journal Physics. Condens. Matter 31: 1: 40: En 41: En 42: 58: LAS 61: 64: <1989> 68: PRE 90: b 76: FISICA E TECNOLOGIA DE MATERIAIS 87: MATERIA CONDENSADA 91: 8403 MFN: 5105 1: SID/SCD 2: 3435 3: INPE-3435 4: ETES 5: MC 6: am 10: Tissi, Plinio 12: Um algoritmo para a otimizacao minimax da iluminacao produzida por uma antena de feixe moldado 40: Pt 41: Pt 42: 53: Simp¢sio Internacional de Microondas no Desenvolvimento Industrial 54: 22-25 jul <1987> 56: Campinas 58: DSS 59: 340006 61: 64: <1987> 68: PRE 76: COMPUTACAO APLICADA 87: ALGORITMOS 91: 8507 MFN: 5177 1: SID/SCD 2: 3552 3: INPE-3552-PRE/764 4: FISPLASMA 5: MC 6: am 10: FERREIRA,J.L. 10: LUDWIG,G.O. 10: MONTES FILHO,A. 12: ION-ACOUSTIC DOUBLE LAYER IN A MAGNETIC PICKET FENCE CONFIGURATION 18: Proceedings 53: ANNUAL CONF. ON PLASMA PHYSICS, 12 54: <1985> 56: Trieste 58: LAP 59: 60111X 61: 64: <1989> 68: PRE 91: 8506 MFN: 5185 1: SID/SCD 2: 3563 3: INPE-3563-PRE/769 4: COMP 5: S 6: as 10: Yanasse, Horacio H. 10: Soma, Nei Y. 12: A NEW ENUMERATION SCHEME FOR THE KNAPSACK PROBLEM 14: 235-245 30: Discrete Applied Mathematics 31: 18 32: 2 58: LAC 59: 120405 61: 64: nov. <1987> 68: PRE 76: COMPUTACAO APLICADA 91: 8710 MFN: 5295 1: SID/SCD 2: 3747 3: INPE-3747-PRE/873 4: ETES 5: S 6: as 10: Moraes, Isabel Maria de 10: Venkataraman, Nellore Srinivasan 10: Pilchowski, Hans Ulrich 12: Electrostatic potential and density estimation around a ionospheric satellite 20: 24 30: Acta Astronautica 31: 15 32: 4 58: DMC 59: ESTER 61: 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: satellite wake potential 88: ionospheric satellite 88: numerical particle density 91: 8701 MFN: 5298 1: SID/SCD 2: 3750 3: INPE-3750-PRE/874 4: ETES 5: S 6: as 10: Souza, Marcelo Lopes de Oliveira e 12: Exactly solving the weighted time-fuel optimal control of an undamped harmonic oscillator, I 30: Journal of Guidance, Control and Dynamics 58: DMC 59: CONTAT 61: 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: optimal control 88: time fuel 88: undamped harmonic oscillaator 88: exact solution 91: 8710 MFN: 5369 1: SID/SCD 2: 3861 3: INPE-3861-PRE/924 4: ETES 5: S 6: as 10: Ribeiro, Jos‚ Francisco 10: Martins Neto, Antonio Felix 10: Moro, JoÆo 12: A self-tuning regulator based on pole placement desing for use in satellite attitude control 14: 65-81 30: REVISTA BRASILEIRA DE CIENCIAS MECANICAS 31: 9 32: 1 58: DMC 59: CONTAT 61: 64: fev. <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: attitude 88: self tuning 88: pole asignment 88: laast square method 91: 8702 MFN: 5375 1: SID/SCD 2: 3869 3: INPE-3869 4: FISPLASMA 5: S 6: as 10: KISHORE,R. 12: QUASI-PARTICLE SPECTRUM OF THE HUBBARD MODEL 14: 6854-6859 30: Physical Review B 31: 35 32: 13 40: N 41: En 42: 58: LAP 59: 604100 61: 64: <1987> 68: PRE 76: FISICA DE PLASMA 91: 8705 MFN: 5388 1: SID/SCD 2: 3885 3: INPE-3885-PRE/935 4: ETES 5: MC 6: am 10: Orlando, Valcir 10: Rios Neto, Atair 10: Kuga, H‚lio Koiti 12: Batch and sequential data smoothing and compression by curve fitting using and adaptive state estimation technique 53: World Congress International Federation of Automatic Control, 10 (IFAC) 54: 26-31 July <1987> 56: Munich 57: Germany 58: DMC 59: CONTAT 61: 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: curve fitting 88: data smoothing 88: data compression 88: adaptive state estimation 88: interpolation 88: Kalman Filtering 91: 8707 MFN: 5396 1: SID/SCD 2: 3894 3: INPE-3894-PRE/396 4: FISPLASMA 5: S 6: as 7: 000 10: DEL BOSCO,E. 10: DALLAQUA,R.S. 10: LUDWIG,G.O. 10: Bittencourt, Jose Augusto 12: ISOTOPIC ENRICHMENT IN A PLASMA CENTRIFUGE 14: 1716-1718 30: Applied Physics Letters 31: 50 32: 24 58: LAP 58: DAE 59: 601128 61: 64: <1987> 68: PRE 91: 8705 MFN: 5403 1: SID/SCD 2: 3902 3: INPE-3902-PRE/943 4: ETES 5: S 6: as 10: Rios Neto, Atair 12: Design of a stochastic linear discrete regulator based on an optimal state estimation approach 14: 151-157 30: Controle e Automa‡Æo 31: 2 32: 3 53: World Congress International Federation of Automatic Control, 10 (IFAC) 54: 26-31 July <1987> 56: Munich 57: West Germany 58: DMC 59: CONTAT 61: 64: <1990> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: stochastic control 88: state estimation 88: adaptive control 88: minimum variance controllers 88: optimal control of dynamics systems 91: 8707 MFN: 5404 1: SID/SCD 2: 3903 3: INPE-3903-PRE/944 4: ETES 5: MC 6: am 10: Fleury, Agenor de Toledo 10: Rios Neto, Atair 12: Use of a virtual control approach in state estimation 53: World Congress International Federation of Automatic Control, 10 (IFAC) 54: 26-31 July <1987> 56: Munich 57: West Germany 58: DMC 59: CONTAT 61: 64: <1987> 68: PRE 76: ENGNEHARIA E TECNOLOGIA ESPACIAL 88: state estimation 88: adaptive filtering 88: Kalman filtering 88: optimal control MFN: 5407 1: SID/SCD 2: 3909 3: INPE-3909-PRE/949 4: COMP 5: S 6: as 10: Gomes, S.M. 12: A NONLINEAR BOUNDARY VALUE PROBLEM AND APPLICATIONS TO A DIFFUSION PROBLEM WITH RADIAL SYMMETRIES 14: 141-160 30: MAT. APL. COMP. 31: 6 32: 2 58: LAC 59: 203106 61: 64: <1987> 68: PRE 76: COMPUTACAO APLICADA 91: 8703 MFN: 5416 1: SID/SCD 2: 3923 3: INPE-3923-PRE/957 4: ETES 5: MC 6: am 10: Souza, J.A.M. Felippe de 12: Control of nonlinear systems using fixed point theorems 53: WORLD CONGRESS OF IFAC, 10 54: 26-31 July <1987> 56: Munich 57: West Germany 58: DMC 59: A81 61: 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: controllability 88: distributed parameters systems 88: nonlinear systems 88: fixed point theorems MFN: 5440 1: SID/SCD 2: 3974 3: INPE-3974 4: CEA 5: S 6: as 10: Correia, Emilia 10: Kaufmann, Pierre 12: REPETITION RATES OF FAST PULSES IN MM-WAVES/X-RAY SOLAR BURST 14: 143-154 30: Solar Physics 31: 111 32: : 58: CRAAE 59: 907316 64: <1987> 68: PRE 76: RADIASTRONOMIA 91: 8708 MFN: 5443 1: SID/SCD 2: 3978 3: INPE-398-PRE/989 4: FISPLASMA 5: S 6: as 10: FERREIRA,A.C.A. 12: REDUCTION OF THE GENERAL SPITZER-HARM PROBLEM IN PLASMA PHYSICS 14: 935-941 30: PLASMA PHYSICS AND CONTROLLED FUSION 31: 30 32: 8 58: LAP 59: 601136 61: 64: Ago. <1988> 68: PRE 91: 8808 MFN: 5459 1: SID/SCD 2: 4004 3: INPE-4004 4: CEA 5: S 6: as 10: Sawant, Hanumant Shankar 10: Costa, Joaquim Eduardo Rezende 10: TREVISAN,R.H. 10: LATTARI,C.J.B. 10: Kaufmann, Pierre 12: LOW LEVEL DECIMETRIC (1.6 GHZ)SOLAR BURST ACTIVITY 14: 189-199 30: Solar Physics 31: 111 32: 1 58: DAS 58: CRAAE 59: RADIO 61: 64: <1987> 68: PRE 76: RADIASTRONOMIA 83: Observations of solar bursts at 1.6 GHz were carried out in the month of July 1985 for about two weeks. Five intervals of solar burst activity, each one lasting for a couple of minutes, were observed. Predominantly, two classes of fast bursts were observed: viz: 'spike' and 'blips'. However, some of these bursts were two orders of magnitude less intense than those reported earlier. Low-level blips have typical duration 350 ms, excitation time 200 ñ 25 ms, decay time 130 ñ 25 ms and a low degree of circular polarization of about 15 83: . Detailed investigations of decay times of the blips have been carried out in terms of collisional damping and Landau damping. Observed decay times of the blips seem to favour the hypothesis of collisional damping. This investigation suggests that blips probably originate at second harmonic by beam plasma interaction as that of metric type III bursts. Also, low-level ms-spikes with the half power duration in the range of 5 to 20 ms suggest that source sizes be smaller than 50 km if the process of emission is electron-cyclotron maser 91: 8610 MFN: 5460 1: SID/SCD 2: 4009 3: INPE-4009-PRE/ 4: FISMAT 5: S 6: as 7: [07] 10: Andrade e Silva Erasmo A. de 10: Cunha Lima, Ivan C. 10: Ferreira da Silva, Antonio 12: Density of states due to pairing of impurities in semiconductor systems 14: 795-798 30: Solid State Communications 31: 61 32: 2 40: EN 41: EN 42: 58: LAS 61: 64: <1987> 68: PRE 90: b 76: FISICA E TECNOLOGIA DE MATERIAIS 87: MATERIA CONDENSADA 91: FDB-19950711 92: FDB-MLR MFN: 5482 1: SID/SCD 2: 4047 3: INPE-4047 4: CEA 5: S 6: as 10: COSTA,A.M. 10: Piazza, Liliane Rizzo 12: PCA EFFECTS ON A VLF TRANSANTARTIC PROPAGATION PATH 14: 293-312 30: MEMOIRS OF NATIONAL INSTITUTE OF POLAR RESEARCH, JAPAN 31: 48 32: : 58: CRAAE 59: IONO 61: 64: <1987> 68: PRE 76: RADIASTRONOMIA 91: 8711 MFN: 5486 1: SID/SCD 2: 4056 3: INPE-4056-NTE/265 4: ETES 5: S 6: as 10: Lopes, Roberto Vieira Fosenca 10: Kuga, H‚lio Koiti 12: Optimal estimation of local orbit from GPS measurements 14: 186-188 30: Journal of Guidance, Control and Dynamics 31: 11 32: 2 58: DMC 59: 507016 61: 64: mar.-Apr. <1988> 68: NTC 76: ASTRODYNAMICS 88: global positioning system 88: navstar satellites 88: orbit calculation 88: orbital position 88: estimation 88: algorithms 88: covariance 88: error analysis 88: optimization 88: orbital velocity 83: An optimal solution is presented to the problem of local orbit estimation of an Earth satellite from observation of range and range-rate provided by n equal to or less than 3 distinct stations. The procedure is especially suitable for processing measurements generated by the Global Positioning System (GPS). In addition to the position and velocity vectors estimation, the error covariance matrices of the estimates are obtained. Also considered is the case of biased measurements and respective modification of the procedure for treating such tendencies. Preliminary results indicate that the lgorithm developed is a promising tool for precision real time orbit estimation 91: 8611 MFN: 5487 1: SID/SCD 2: 4060 3: INPE-4060-PRE/1019 4: ETES 5: MC 6: am 10: Rios Neto, Atair 10: Pinto, Ricardo L.U.F. 12: A stochastic approach to generate a projection of the gradient type method 53: Congresso Latino Americano e Ib‚rico sobre M‚todos Computacionais para Engenharia 54: 3-5 nov. <1987> 56: Rio de Janeiro 58: DMC 59: 508020 61: 64: <1987> 68: PRE 88: constraints 88: error analysis gradients 88: stochastic processes 88: algorithms 88: linear prediction 88: mathematical programming 88: optimization 88: parameter identification 88: random variables 83: A stochastic approach is proposed to generate a direct search procedure where errors in the constraints are inherently treated. The objective is to have the possibility of directly considering the relative accuracy in the satisfaction of constraints, when one is numerically solving a nonlinear constrained optimization problem. This is done by adding to the numerical algorithm the feature of modelling as random variables the errors with which the constraints are supposed to be approximated. Use is made of linear estimation theory, reducing the search increment determination to a problem of parameter estimation with a priori information. This problem is solved with the Gauss-Markov estimator in the Kalman form. The first order, direct search method, shows that results can be viewed as a stochastic version of the projection of the gradient method. An analysis is made showing the relationships between the proposed stochastic version and the existing deterministic method MFN: 5493 1: SID/SCD 2: 4074 3: INPE-4074 4: CEA 5: MC 6: am 7: RAA 10: Kaufmann, Pierre 12: NEGLIGIBLE GAIN EFFECTS OF NON-GAUSSIAN ERRORS ACCORSS A SMOTH REFLECTOR: APPLICATION TO THE ITAPETINGA 13.7-M 53: SIMPOSIO INTERNATIONAL DE MICRO-ONDAS, 2 54: 27-30 jan. <1987> 56: Rio de Janeiro 58: CRAAE 59: RADIO 61: 64: <1987> 68: PRE 76: RADIASTRONOMIA 91: 8701 MFN: 5499 1: SID/SCD 2: 4080 3: INPE-4080 4: CEA 5: S 6: as 10: JAGER,C. 10: KUIJPERS,J. 10: Correia, Emilia 10: Kaufmann, Pierre 12: A HIGH ENERGY SOLAR FLARE BURST COMPLEX AND THE PHYSICAL PROPERTIES OF ITS SOURCE REGION 14: 317-326 30: Solar Physics 31: 110 32: : 58: CRAAE 59: RADIO 61: 64: <1987> 68: PRE 76: RADIASTRONOMIA 91: 8612 MFN: 5505 1: SID/SCD 2: 4086 3: INPE-4086-PRE/ 4: FISMAT 5: S 6: as 7: [07] 10: Andrade e Silva, Erasmo E. de 10: Cunha Lima, Ivan C. da 12: Impurity bands in N-Type Si/Si02 MOS 14: 925-928 30: Physical Review Letters 31: 58 32: 9 40: En 41: En 42: 58: LAS 59: 604135 61: 64: <1987> 68: PRE 76: FISICA E TECNOLOGIA DE MATERIAIS 87: MATERIA CONDENSADA 91: FDB-19950711 92: FDB-MLR MFN: 5530 1: SID/SCD 2: 4124 3: INPE-4124-NTE/268 4: FISPLASMA 5: PM 6: m 7: [07]533 16: Wetsel,L.F.S. 16: Rossi, J.O. 16: Del Bosco, E 18: Gerador de pulsor de 4 canais com trasos ajustaveis 20: 34 40: Pt 41: Pt 42: 58: LAP 59: CENTRIFUGA DE PLASMA 64: fev. <1987> 66: Sao Jose dos Campos 67: BR 68: NTC 90: b 76: FISICA DE PLASMA 91: 8702 MFN: 5534 1: sid/scd 2: 4132 3: INPE-4132-PRE/1043 4: ETES 5: MC 6: am 10: GalvÆo, Francisco Leme 12: Comparing an improved first order panel method results with wind-tunnel measurements for a complete airplane configuration 14: 15 53: Boundary Element Technology Congress, (BETECH) 54: 2-4 jan. <1987> 56: Rio de Janeiro 58: DMC 59: 200301 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: aircraft configurations 88: commercial aircraft 88: computational fluid dynamics 88: panel method (fluid dynamics) 88: pressure distribution 88: wind tunnels 88: comparison 88: wind tunnel models 88: wind tunnel walls 83: A numerical computation of pressure distribution over a complete commercial airplane configuration, using an improved first order panel method, is made and results are compared with experimental measurements obtained for the same configuration with a 1/14 model in a wind tunnel 91: 8707 MFN: 5536 1: SID/SCD 2: 4134 3: INPE-4134 4: CEA 5: MC 6: am 10: Piazza, Liliane Rizzo 10: COSTA,A.M. 10: Kaufmann, Pierre 10: KUNTZ,V.L.R. 10: Leme, Neusa Maria Paes 10: MOURA,M.S.S.M. 12: RESULTS OF VLF LONG-DISTANCE PROPAGATION RECEIVED AT BRAZIL AND AT ANTARCTIC PENINSULA 14: 017 53: BIREGIONAL LATIN-AMERICA-AFRICAN WORKSHOP ON RADIOPROPAGATION RESEARCH AND APPLICATIONS - URS 54: 1-4 Apr. <1987> 56: Buenos Aires 57: AR 58: CRAAE 59: RADIO 61: 64: <1987> 68: PRE 76: RADIASTRONOMIA 91: 8703 MFN: 5540 1: SID/SCD 2: 4138 3: INPE-4138 4: FISMAT 5: S 6: as 10: ANDRADE E SILVA,E.A. 10: DA CUNHA LIMA,I.C. 12: IMPURITY BANDS IN GA1-XALXAS/GAAS QUANTUM WELLS 14: 113 30: SOLID STATE COMMUNICATIONS 31: 64 32: 2 58: LAS 59: 620009 61: 64: <1987> 68: PRE MFN: 5541 1: sid/scd 2: 4140 3: INPE-4140-PRE/1048 4: ETES 5: MC 6: am 10: Pereira, Eduardo Agusto Gomes 10: Oliveira J£nior, Ismael Em¡lio de 12: Modelagem eletromagn‚tica de uma v lvula de controle 13: Electromagnetic modeling of a control valve 14: 13 53: Simp¢sio Franco-Brasileiro sobre Calculo de Campos El‚tricos e Magn‚ticos, 1 54: mar. <1987> 56: Florianopolis 58: DMC 59: 500003 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: artificial satellites 88: attitude control 88: control valves 88: electromagnetic properties 88: models 88: control systems design 88: electric fields 88: magnetic fields 83: Este trabalho mostra a modelagem feita para uma eletrov lvula de controle empregada em sistemas de controle de atitude de sat‚lite. Esta modelagem d  ˆnfase aos per¡odos transit¢rios de aberturas e fechamento que determinam o tempo de resposta do sistema durante os quais ‚ necess rio calcular as grandezas magn‚ticas e a corrente el‚trica, as quais sÆo vari veis com o tempo. Um exemplo ‚ resolvido e sÆo apresentados os gr ficos das grandezas mencionadas e mais o da abertura da v lvula em fun‡Æo do tempo. The modeling developed for an electric control valve employed in satellite attitude control systems is presented. This modeling emphasizes the on and off transient periods which determine the system response time during which it is necessary to calculate the magnetic parameters and the electric current which are variable with time. An example is solved, and graphs of the parameters mentioned and of the valve opening as a function of time are presented 91: 8703 MFN: 5542 1: SID/SCD 2: 4141 3: INPE-4141 4: FISMAT 5: MC 6: am 7: FSO 10: KISHORE,R. 12: SIMULTANEOUS RADIATION DAMAGE AND TERMAL ANNEALING OF SOLAR CELLS 14: 11 53: IEEE PHOTOVOLIAIC SPECIALISTS CONFERENCE, 19 54: 4-8 May <1987> 56: New Orleans 57: USA 58: LAS 59: 620009 61: 64: <1987> 68: PRE 91: 8705 MFN: 5543 1: SID/SCD 2: 4142 3: INPE-4142-RPE/539 4: ETES 5: PM 6: M 16: Fleury, Agenor de Toledo. 18: Intimadores de estado de sistemas dinƒmicos baseados no conceito de dualidade 19: State estimators for dynamic systems based upon the duality concept 20: 200 52: Escola Polit‚cnica da USP 53: Doutor 58: DMC 59: 508020 62: USP 64: <1987> 66: SÆo Paulo 68: RPQ 76: NUMERICAL ANALYSIS 88: duality principle 88: dynamical systems 88: optimal control 88: orbital position estimation 88: state estimation 88: state vectors 88: algorithms approximation 88: control theory 88: convergence 88: earth orbits 88: low earth 88: orbits 88: nonlinear systems 88: real time operation 83: The development of a new state estimator for dynamic systems based upon the duality concept between state estimation and optimal control problems is presented. The main objective is a preliminary qualification of the estimator for use in real time nonlinear systems which can recursively be approximated by linear systems. The duality concept is used to transform the original estimation problem in an equivalent one of virtual control. This control problem is then used to generate an adaptive, locally convergent algorithm where, instead of full state estimation, one has to estimate just a control vector with smaller dimension than the state vector. The control formulation allows also the development of convergence acceleration criteria. Three convergence criteria, as well as adaptive noise methods to compensate for model errors, are then developed and used with the proposed estimator in the test problem created to validate the estimator. The algorithm is implemented in a digital computer to estimate the orbit of a low Earth orbit satellite under simulated conditions. Numerical results include various test cases to take account for different initial values for the estimator, different standard deviations for the observations and different number of Earth stations observing the satellite, thus allowing a good evaluation for the estimator characteristics 91: 8703 MFN: 5544 1: SID/SCD 2: 4147 3: INPE-4147-PRE/1054 4: ETES 5: MC 6: am 10: Souza, Jos‚ A. M. Felippe 12: Some aspects of control for semilinear distributed parameter systems 13: Some aspects of control for semilinear distributed parameter systems 14: 7 53: Encontro Regional de Matematica Aplicada e Computacional,, 6 54: 26-28 mar. <1987> 56: Belo Horizonte 58: DMC 59: 508020 61: 64: <1987> 68: PRE 88: banach space 88: control theory 88: group theory 88: nonlinear systems 88: controllability 88: linear operators 88: partial differential equations 88: trajectories 83: Some aspects of control for nonlinear systems of the type z = Az + Nz + Bu, where A is linear, N is nonlinear, B is linear, z is the state and u is the control. It is assumed that the dynamics of the linear part can be described in terms of a strongly continuous semigroup on an appropriate Banach space (the state space), so that this formulation includes distributed parameter systems and delay systems, as well as lumped parameter systems. Theoretical results in controllability are obtained by using fixed point theorems. It is considered the space X of functions from the interval (0,T)to Z (the possible trajectories of the system). In this setting, some mappings F:X yields X are constructed and the solution of the problem of nonlinear controllability is obtained via the fixed points of such F's. 91: 8703 MFN: 5546 1: SID/SCD 2: 4154 3: INPE-4154-RPE/540 4: ETES 5: MP 6: m 16: Oliveira J£nior, Ismael Em¡lio de 16: Pereira, Eduardo A.G. 18: M‚todos num‚ricos na resolu‡Æo do modelo de uma eletrov lvula de controleLE 19: Numerical methods in the resolution of control electrovalve model 20: 6 42: 58: DMC 59: 508020 62: INPE 64: <1987> 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: control systems design 88: models 88: newton-raphson method 88: numerical analysis 88: runge-kutta method 88: transistors valves 88: attitude control 88: differential equations 88: polynomials 88: spacecraft control 88: spline functions 83: This work shows the numerical method application in the resolution of the model of transistors in an electrovalve employed in the satellite attitude control. The primary support method is the curve approximation through third degree spline polynomials, used to approximate the curve characteristics of ferromagnetic materials. Two methods for localization of zero functions are used, the Newton-Raphson and the Regula Falsi. For the last, through a system of differential equations derived from the model, the predictor-corrector and the Runge-Kutta are applied, this final stage initiates the former. Also shown are some typical results obtained with this model 91: 8703 MFN: 5550 1: SID/SCD 2: 4159 3: INPE-4159-PRE/1061 4: FISPLASMA 5: S 6: as 10: ASO,Y. 12: THEORETICAL MODEL OF HALO PLASMA OBSERVED IN SMALL-ASPECT FRC PLASMA 14: 809-815 30: NUCLEAR FUSION 31: 28 32: 5 58: LAP 59: 601160 61: 64: May <1988> 68: PRE 91: 8805 MFN: 5553 1: SID/SCD 2: 4163 3: INPE-4163-RPE/541 4: ETES 5: T 6: m 16: Oliveira J£nior, Ismael Em¡lio 18: Modelagem do funcionamento de um sistema de jatos de g s frio para controle de atitude de sat‚lites 19: Functional model for a system of cold gas jets for attitude control satellites 20: 177 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: 200301 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: artificial satellites 88: attitude control 88: cold gas 88: gas jets 88: models 88: thrust vector control 88: control valves 88: desaturation 88: electromagnetic measurement 88: reaction wheels 88: simulation 88: surges 83: A model for a cold jet system to provide attitude control for satellites is presented. The model includes on and off transient periods, in which the control valve exerts the major influence. Consequently, this valve is studied in detail, with an electromagnetic analysis of its actuation. From the model is derived the graphics of the principle parameters related to the control valve, and of the thrust produced by one of the system's micromotors. Then, a simulation is made of the desaturation maneuver of the reaction wheel and of the attitude changing maneuver MFN: 5557 1: SID/SCD 2: 4168 3: INPE-4168 4: COMP 5: MC 6: am 10: Yanasse, Horacio Hideki 12: O a‡goritmo de karmarkar para programacao linear 14: 34 40: Pt 41: Pt 42: 53: Encontro Regional de Matematica Aplicada e Computacional 54: 18-20 maio <1987> 56: Sao Jose dos Campos 57: BR 58: LAC 59: 605107 61: 68: PRE 76: COMPUTACAO APLICADA 87: ALGORITMOS 91: 8705 MFN: 5558 2: 004171 5: MC 6: AM 7: PRI 10: Oliveira, Eni Alvi 12: Um sistema para determinacao de campos de ventos a partir do rastreio de nuvens 14: 12 53: Congresso Brasileiro de Agrometeorologia, 5 54: jul. <1987> 56: Belem 57: BR 58: DSR 61: ] 64: <1987> 68: PRE MFN: 5563 1: SID/SCD 2: 4179 3: INPE-4179 4: COMB 5: MP 6: m 16: Gill, Walter 16: PAULA,F.C.E. 16: ARAUJO,T.M. 18: DECOMPOSICAO CATALITICA DE HIDRAZINA PARA MICROPROPULSAO 20: 23 58: LCP 59: 508039 62: INPE 64: <1987> 68: NTC 76: COMBUSTAO 87: cat lise 87: decomposi‡Æo da hidrazina 87: prepara‡Æo de catalisadores 91: 8705 MFN: 5564 1: SID/SCD 2: 4180 3: INPE-4180 4: COMB 5: MP 6: m 16: Fachini Filho, Fernando 16: Gill, Walter 16: LAMM,W.R. 16: KIMURA,L.A. 18: EFEITO DO GAS INERTE NA QUEIMA DE POLVORA DE BASE DUPLA 20: 13 58: LCP 59: 200107 64: <1987> 68: RPQ 76: COMBUSTAO 91: 8705 MFN: 5565 1: sid/scd 2: 4181 3: INPE-4181 4: COMB 5: PM 6: M 7: COM 16: Anhalt, J. 18: FEASIBILITY STUDY OF DEVELOPMENT AND CONSTRUCTION REQUIREMENTS OF A LIQUID PROPELLANT TANKAGE ELEMENT 20: 26 42: 58: LCP 59: 500003 62: INPE 64: <1987> 68: RPQ 76: COMBUSTAO MFN: 5567 1: SID/SCD 2: 4183 3: INPE-4183-pre 4: COMP 5: MC 6: am 10: Claeyssen, J.C.R. 10: Vilhena, M.T. 10: Gallicchio, E. 12: INVERSION OF HIGHER-ORDER MATRIX EQUATIONS THROUGH THE COMPUTING OF THEIR DYNAMICAL SOLUTIONS 14: 18 53: SEMINARIO BRASILEIRO DE ANALISE, 25., SAO JOSE DOS CAMPOS, INPE, 28-30 DE MAIO DE 1987 54: 28-30 maio <1987> 56: SÆo Jos‚ dos Campos 58: LAC 59: 605107 61: 64: <1987> 68: PRE 76: COMPUTACAO APLICADA 91: 8705 MFN: 5569 1: SID/SCD 2: 4185 3: INPE-4185 4: COMP 5: MC 6: am 10: Lorena, Luis Antonio N. 10: Olivio, A.A 12: Aplicacao de um algoritmo de subgradientes ao problema generalizado de atribuicao 14: 8 40: Pt 41: Pt 42: En 50: 53: Congresso Nacional de Matematica Aplicada e Computacional 54: 21-25 set. <1987> 56: Gramado 58: LAC 59: 605107 61: 64: <1987> 68: PRE 76: COMPUTACAO APLICADA 87: ALGORITMOS 91: 8709 MFN: 5570 1: SID/SCD 2: 4186 3: INPE-4186 4: COMP 5: mc 6: am 10: Yanasse, Horacio Hideki 10: Soma, Nei Yoshihiro 12: Um algoritmo pseudopolinomial para o problema da mochila 0-1 de valor independente 14: 12 40: Pt 41: Pt 42: 53: Simposio Brasileiro de Pesuisa Operacional 54: 4-6 nov. <1987> 56: Salvador 58: LAC 59: 60500X 61: 64: <1987> 68: PRE 76: COMPUTACAO APLICADA 87: ALGORITMOS 91: 8711 MFN: 5573 1: SID/SCD 2: 4191 3: INPE-4191-NTE/270 4: FISPLASMA 5: MP 6: m 16: FERNANDES,A.C.P. 18: FONTE CHAVEADA 10V/25A 20: 89 58: LAP 59: 601144 64: <1987> 68: NTC 91: 8706 MFN: 5574 1: SID/SCD 2: 4192 3: INPE-4192 4: ETES 5: MP 6: m 16: Bergamini, Eduardo Whitaker 16: ESTEVES,L.C. 16: SALGADO,A.E.M. 16: HASHIOKA,M.H. 16: Paula Jr., Alderico Rodrigues de 16: YAMAGUTI,W. 16: DurÆo, Otavio Santos Cupertino 16: PERES,J.S. 16: FRANCISCO,M.F.M. 18: RELATORIO DE ATIVIDADES DO DEPARTAMENTO DE ENGENHARIA DE COMPUTACAO - DCA/1986 20: 17 58: DSS 59: 200409 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: 8706 MFN: 5575 1: SID/SCD 2: 4194 3: INPE-4194 4: FISPLASMA 5: S 6: as 10: Chian, Abraham Chian-Long 10: Alves, Maria Virginia 12: Nonlinear generation of the fundamental radiation of interplanetary type III radio bursts 14: L77-L80 30: Astrophysical Journal 31: 330 32: 1 Part 2 40: En 41: En 42: 58: LAP 59: 620009 61: 64: June <1988> 68: PRE 76: FÖSICA DE PLASMA 88: headings plasmas 88: Sun radio radiation 88: Sun solar wind 83: A new generation mechanism of interplanetary type III radio bursts at the fundamental electron plasma frequency is discussed. It is shown that the electromagnetic oscillating two-stream instability, driven by two oppositely propagating Langmuir waves, can account for the experimental observations. In particular, the major difficulties encountered by the previously considered electromagnetic decay instability are removed 91: 8705 MFN: 5576 1: SID/SCD 2: 4199 3: INPE-4199-PRE 4: FISMAT 5: S 6: as 7: [07] 10: Granato, Enso 10: Ranvaud, R> 10: Ferreira da Silva, Antonio 10: Cunha Lima, van da 10: Souza, J.P 12: Comportamento eletrico de camadas implantadas por ions de P de baixa energia no Si 14: 77-91 30: Revista de Fisica Aplicada e Instrumentacao 31: 2 32: 1 40: En 41: En 42: 58: LAS 61: 64: <1987> 68: PRE 76: FISICA E TECNOLOGIA DE MATERIAIS 87: MATERIA CONDENSADA 91: FDB-19950711 92: FDB-MLR MFN: 5577 1: SID/SCD 2: 4200 3: INPE-4200-RPE/545 4: FISPLASMA 5: MP 6: m 16: SANDONATO,G.M. 16: FERREIRA,J.L. 16: FERREIRA,J.G. 16: LUDWIG,G.O. 16: MONTES FILHO,A. 18: PROPULSOR IONICO (PION 1): TESTES E RESULTADOS PRELIMINARES 20: 70 58: LAP 59: 601144 64: <1987> 68: RPQ 91: 8706 MFN: 5585 1: SID/SCD 2: 4219 3: INPE-4219-PRE/1099 4: ETES 5: MC 6: am 10: Nogueira, Celso F. 10: Fleury, Agenor de Toledo 10: Aranha, Jose A. 12: Uma t‚cnica para refinamento local do campo de tensäes no m‚todo de elementos finitos 13: A technique for local refinement of the stress field by finite element method 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 58: DMC 59: 500003 61: 68: PRE 88: finite element method 88: optimization 88: stress distribution 88: calculus of variations 88: computational grids 88: displacement 83: The goal is to determine the thermal conductance of bolted joints between panels for the first Brazilian satellite. This is achieved by a comparison among experimental values, numerical values based on the finite difference method, and theoretical results. These joints were submitted to tests in a vacuum-thermal chamber of the laboratory of satellite thermal control subsystem development, at INPE MFN: 5586 1: SID/SCD 2: 4220 3: INPE-4220-PRE/1100 4: ETES 5: MC 6: am 10: Trivelato, Gilberto da Cunha 10: Souza, Marcelo Lopes de Oliveira e 12: Controle de rodas de rea‡Æo atrav‚s de t‚cnicas digitais usando modelos de referˆncia 13: Reaction wheel control through digital technique using reference models 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 56: Florian¢polis 58: DMC 59: 508500 61: 64: <1987> 68: PRE 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 88: control systems design 88: digital techniques 88: reaction wheels 88: satellite attitude control 88: torque 88: artificial satellites 88: controllers noise reduction 83: A digital model-following technique for the control of reaction wheels (used in the attitude control of artificial satellites)is presented, Its intention is to minimize the effects of wheel disturbing torques and sensor noises, on the wheel's torque. The torque reference is applied to the two wheels which have their speeds compared. This difference comes from those effects, and is used to feed a controller which forces the real wheel to follow the ideal one MFN: 5587 1: SID/SCD 2: 4221 3: INPE-4221-PRE/1101 4: ETES 5: MC 6: am 10: Bambace, L. A. 10: Cotta, R. M. 10: Carajilescov, P. 12: Radiative heat transfer solutions in plane-parallel participating media: application to multilayer insulations for space vehicles 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica / Brazilian Congress of Mechanical Engineering, 11 (COBEM) 54: 7-11 dec. <1987> 56: Florianopolis 58: DMC 59: SISTER 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: Galerkin method 88: multilayer insulation 88: radiative heat transfer 88: specular reflection 88: thermal insulation 88: aerospace vehicles 88: parallel flow 88: spacecraft design 88: spacecraft shielding 83: The ideas in the Galerkin method for the solution of radiative transfer in plane parallel participating media are extended to allow for both specularly and diffusely reflecting boundaries. The technique is then utilized to solve the transversal heat transfer in multilayer insulation for aerospace applications. The relative accuracy of design type, approximate formulas are then established, and the effects of specularity are critically examined 91: 8712 MFN: 5588 1: SID/SCD 2: 4222 3: INPE-4222-NTI/274 4: ETES 5: MP 6: m 16: Kondapalli, Ramanuja Rao 16: Kuga, Helio Koiti 18: On the least squares differential correction method for orbit estimation problem 38: 58: DMC 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: NTC 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: LEAST SQUARES CORRECTION 88: ORBIT ESTIMATION 88: ARTIFICIAL SATELLITES 91: 8707 MFN: 5589 1: SID/SCD 2: 4239 3: INPE-4239 4: FISPLASMA 5: MC 6: am 10: ALVES,M.V. 10: Chian, Abraham Chian Long 12: A THEORY OF THE COHERENT FUNDAMENTAL PLASMA EMISSION IN TOKAMAKS 14: 010 53: ENERGY INDEPENDENCE CONFERENCE: FUSION ENERGY AND PLASMA PHYSICS 54: 17-21 Aug. <1987> 56: Rio de Janeiro 58: LAP 59: 60190X 61: EC 68: PRE 91: 8708 MFN: 5590 1: SID/SCD 2: 4240 3: INPE-4240 4: FISPLASMA 5: MC 6: am 10: CASTRO,J.J.B. 10: CASTRO,P.J. 10: CORREA,R.A. 10: GALVAO,G.P. 10: LUDWIG,G.O. 10: MONTES FILHO,A. 10: Nono, Maria do Carmo de Andrade 10: ROSSI,J.O. 12: GYROTRON DEVELOPMENT AT THE INSTITUTO DE PESQUISAS ESPACIAS 14: 226 18: Proceedings 53: ENERGY INDEPENDENCE CONFERENCE: FUSION ENERGY AND PLASMA PHYSICS 54: 17-21 Aug. <1987> 56: Rio de Janeiro 58: LAP 59: 601136 61: 64: <1987> 68: PRE 91: 8708 MFN: 5591 1: SID/SCD 2: 4241 3: INPE-4241 4: FISPLASMA 5: MC 6: am 7: PLA 10: ASO,Y. 10: GALVAO,R.M.O. 10: UEDA,M. 12: DESIGN, CONSTRUCTION AND OPERATION OF A SMALL RFP FOR TURBULENT PLASMA STUDIES 53: ENERGY INDEPENDENCE CONFERENCE: FUSION ENERGY AND PLASMA PHYSICS 54: 17-21 Aug. <1987> 56: Rio de Janeiro 58: LAP 59: 601160 61: 64: <1987> 68: PRE 91: 8708 MFN: 5592 1: SID/SCD 2: 4242 3: INPE-4242-RPE/548 4: FISPLASMA 5: MP 6: m 16: UEDA,M. 16: FERREIRA,A.C.A. 16: ASO,Y. 18: PROPOSTA PARA CONSTRUCAO DO INJETOR DE PARTICULAR ENERGETICAS (IPE) 20: 34 58: LAP 59: 601411 64: <1987> 68: RPQ 91: 8707 MFN: 5593 1: SID/SCD 2: 4243 3: INPE-4243 4: FISPLASMA 5: S 6: as 7: PLA 10: Bittencourt, Jose Augusto 10: DEL BOSCO,E. 10: DALLAQUA,R.S. 10: LUDWIG,G.O. 12: PLASMA CENTRIFUGUE DEVELOPMENT AT INPE 14: 236-247 30: Fusion Energy and Plasma Physics 40: En 41: En 42: 53: ENERGY INDEPENDENCE CONFERENCE: FUSION ENERGY AND PLASMA PHYSICS, RIO DE JANEIRO, AUG. 17-21, 1987 58: DAE 58: LAP 59: 601128 61: 64: <1988> 68: PRE 76: AERONOMIA 91: 8708 MFN: 5598 1: SID/SCD 2: 4248 3: INPE-4248-PRE/ 4: FISMAT 5: MC 6: AM 7: [07] 10: Nubile,Paulo 10: Veissid, Nelson 10: Beloto, Antonio Fernando 10: Perondi, Fernando F. 10: Torres Filho, A 12: O experimento celula solar do primeiro satelite da Missao Espacial Completa Brasileira 20: 9 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Aplicacoes de Vacuo na Industria e Ciencia, 8 (CBRAVIC) 54: 22-24 Jul. <1987> 56: Rio de Janeiro 57: BR 58: LAS 59: CELSOL 61: 64: <1987> 68: PRE 90: b 76: FISICA E TECNOLOGIA DE MATERIAIS 87: CELULAS SOLARES 88: MATERIALS SCIENCE 88: SOLAR CELLS 91: 8707 MFN: 5599 1: SID/SCD 2: 4249 3: INPE-4249-PRE/ 4: FISMAT 5: MC 6: am 7: [07] 10: Ferreira, S.O. 10: Abramof, Eduardo 10: Bandeira, Iraja Newton 12: Operation temperature behavior of PbSnTe detectors made by HWE 20: 7 40: En 41: En 42: 53: Escola Brasileira de Fisica de Semicondutores, 3. 54: 16-28 fev. <1987> 56: Campinas 58: LAS 59: 601020 61: 64: <1987> 68: PRE 76: FISICA E TECNOLOGIA DE MATERIAIS 91: FDB-19950711 92: FDB-MLR MFN: 5600 1: SID/SCD 2: 4250 3: INPE-4250-PRE/ 4: FISMAT 5: MC 6: am 7: [07] 10: Andrade e Silva, Erasmo A> 10: Cunha Lima, Ivan C. da 12: Impurity bands in quantum wells 14: 91 40: En 41: En 42: 53: Escola Brasileira de Fisica de Semicondutores, 3 54: 16-28 fev <1987> 58: LAS 61: 64: <1987> 68: PRE 76: FISICA E TECNOLOGIA DE MATERIAIS 87: FISICA CONDENSADA 91: FDB-19950711 92: FDB-MLR MFN: 5602 1: SID/SCD 2: 4252 3: INPE-4252 4: FISMAT 5: S 6: as 10: Boschetti, C‚sar 10: AN,C.Y 10: ABRAMOF,E. 10: BANDEIRA,I.N 10: SILVA,M.D. 10: Rappl, Paulo Henrique de Oliveira 10: CUNHA,S.P. 10: FERREIRA,S.O. 12: DETECTORES FOTOVOLTAICOS DE PBSNTE PARA OPERACAO NA FAIXA DOS 2 AOS 14 UM 14: 18 30: REVISTA DA ASSOCIACAO BRASILEIRA DE ENGENHARIA MILITAR, 58: LAS 59: 601020 61: NR 64: <1987> 68: PRE 91: 8707 MFN: 5604 1: SID/SCD 2: 4254 3: INPE-4254-PRE 4: FISMAT 5: MC 6: am 7: [07] 10: Granato, Enso 10: kosterlitz, J.M. 10: Ying, S.C 12: Equilibrium stability of strained epitaxial layers on a rigid substrate 40: En 41: En 42: 53: Escola Brasileira de Fisica de Semicondutores, 3. 54: 16-28 fev. <1987> 56: Campinas 57: BR 58: LAS 61: 61: 64: <1987> 68: PRE 90: b 76: FISICA E TECNOLOGIA DE MATERIAIS 87: FISICA CONDENSADA 88: CONDENSED MATTER PHYSICS 91: FDB-19950711 92: FDB-MLR MFN: 5605 1: SID/SCD 2: 4255 3: INPE-4255-PRE 4: FISMAT 5: S 6: as 7: [07] 10: Andrade e Silva, Erasmo A. 10: Cunha Lima, Ivan da 10: Ferreira da Silva, Antonio 10: Leal, Carlos Eduardo dos Santos 12: Diagonal and off-diagonal disorder in doped quantum wells 14: 8228-8233 30: Physical Review B 31: 37 32: 14 40: En 41: En 42: 58: LAS 61: 64: May <1988> 68: PRE 90: b 76: FISICA E TECNOLOGIA DE MATERIAIS 87: MATERIA CONDENSADA 91: 8805 MFN: 5607 1: SID/SCD 2: 4257 3: INPE-4257-PRE/ 4: FISMAT 5: S 6: as 7: [07] 10: Andrade e Silva, Erasmo A. de 10: Cunha Lima, Ivan C. da 10: Ferreira da Silva, Antonio 10: Leal, Carlos Eduardo 12: Density of states of electrons bound to impurities in quantum wells 14: 352 30: Surface Science 31: 196: 40: En 41: En 42: 58: LAS 61: 64: <1988> 68: PRE 90: b 76: FISICA E TECNOLOGIA DE MATERIAIS 87: MATERIA CONDENSADA 91: FDB-19950711 92: FDB-MLR MFN: 5610 1: SID/SCD 2: 4260 3: INPE-4260 4: COMP 5: MC 6: am 10: OLIVEIRA,C.A. 12: A MORFOLOGIA E A SINTAXE: UM ENFOQUE INTEGRADO BASEADO NO CONHECIMENTO LINGUISTICO 14: 12 53: SIMPOSIO BRASILEIRO DE INTELIGENCIA ARTIFICIAL, 4 54: 13-16 out. <1987> 58: LAC 59: 60710X 61: 64: <1987> 68: PRE MFN: 5611 1: SID/SCD 2: 4261 3: INPE-4261 4: COMP 5: MC 6: am 10: SENNE,E.L.F. 12: O TRATAMENTO DE INCERTEZA NO SISTEMA MOTIN: MOTOR DE INFERENCIA PARA SISTEMAS ESPECIALISTAS 14: 24 53: ENCONTRO REGIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 3 54: 18-20 maio <1987> 56: SÆo Jos‚ dos Campos 58: LAC 59: 60710X 61: 64: <1987> 68: PRE 91: 8705 MFN: 5612 1: SID/SCD 2: 4262 3: INPE-4262 4: COMP 5: MC 6: am 10: MOTTA,I.V.M. 10: Yanasse, Horacio Hideki 12: UMA HEURISTICA MANUAL PARA O ROTEAMENTO DE VEICULOS VISANDO A DISTRIBUICAO DE AGUA 14: 9 53: CONGRESSO NACIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, GRAMADO 54: 21-25 set. <1987> 56: Gramado 58: LAC 59: 605107 61: 64: <1987> 68: PRE 91: 8709 MFN: 5616 1: SID/SCD 2: 4269 3: INPE-4269-PRE/1142 4: COMB 5: MP 6: m 16: Bastos Netto, Demetrio 16: Gill, Walter 16: Migueis, Carlos Eduardo Seraphico de Souza 18: EMPREGO DE TECNICAS DE SIMILARIDADE ENTRE MODELOS DE ESTATO-REATORES EM ESCALA REDUZIDA E NATURAL 20: 21 58: LCP 59: 200107 64: <1987> 68: RPQ 76: COMBUSTAO MFN: 5618 1: SID/SCD 2: 4271 3: INPE-4271-PRE/1143 4: ETES 5: MC 6: am 7: ENM 10: Kuga, H‚lio Koiti 10: Ferreira, Luiz Danilo Damasceno 10: Gudes, Ulisses Tadeu Vieira 12: Simula‡Æo de atitude e de manobras para sat‚lite brasileiro estabilizado por rota‡Æo 13: Simulation of attitude and maneuvers for the Brazilian spin-stabilized satellite 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Floriabopolis 57: BR 58: DMC 59: 510912 61: 64: <1987> 68: PRE 88: attitude control 88: digital simulation 88: spacecraft control 88: spin stabilization 88: flight control 88: satellite orientation 88: spacecraft maneuvers 83: A summary is presented concerning the development of studies dealing with the attitude dynamical analysis of MECB (Missao Espacial Completa Brasileira)spin stabilized data collection satellite. One of the aims of these studies is to verify the feasibility of the proposed stabilization system, through digital simulation. Such simulations are carried out and show the dynamical behavior of the satellite attitude during free and controlled phase (maneuver), allowing one to obtain qualitative information about several aspects of the stabilization and control system. 91: 8712 MFN: 5619 1: SID/SCD 2: 4272 3: INPE-4272-PRE/1144 4: ETES 5: MC 6: am 10: Cardieri, Luiz Victor C. 10: Tu, Carlos Chien-Ching 10: Fleury, Agenor de Toledo 12: Mesa com mancais aerostaticos para simulacao em grau de liberdade de sistema de controle de atitude de satelite 13: Table with aerostatic bearings for simulation in one degree of freedom attitude control systems of artificial satellites 53: Congresso Brasileiro de Engenharia de Mecanica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florianopolis 57: BR 58: DMC 61: 68: PRE 88: control systems design 88: journal bearings 88: satellite attitude control 88: simulation 88: aerostatics artificial satellites 88: degrees of freedom 88: gas lubricants 83: The design is presented of a table supported by thrust and journal aerostatic bearings, which were dimensioned for simulation of the attitude movement of artificial satellites. The most important parameters for this design and the construction problems are emphasized. The air supply facility is shown along with the results of the first prototype performance tests and the instrumented platform for tests with the Attitude Control System 91: 8712 MFN: 5620 1: SID/SCD 2: 4273 3: INPE-4273-PRE/1145 4: ETES 5: MC 6: am 10: Milani, Paulo Giacomo 10: Ribeiro, Jose Francisco 12: Sistema de telemetria e telecomandos de baixo custo para medi‡Æo remota de grandeza f¡sica 13: Low cost telemetry and telecommand system for remote measurement of magnitude character 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florianopolis 58: DMC 59: 508500 61: 64: <1987> 68: PRE 88: digital command systems 88: low cost 88: remote sensing 88: telemetry 88: data acquisition 88: magnitude receivers 88: remote control 83: The design is presented of a telemetry and telecommunication system for the remote measurement of lab experiments. It allows the interaction of equipment that stand on an Air Bearing table with other lab equipment. It is possible to use it in situations in which man cannot be present, for it would be dangerous or could disturb the measurements. The telemetry subsystem has 15 channels, analog or digital, which are swept at a rate of 400 Hz each. The telecommand subsystem allows the sending of up to 30 different telecommands. The first prototype has already been tested with good results and it is being perfected in order to upgrade its performance and reduce the power consumption 91: 8712 MFN: 5621 1: SID/SCD 2: 4274 3: INPE-4274-PRE/1146 4: ETES 5: MC 6: am 10: Souza, Petr“nio Noronha 10: Fleury, Agenor de Toledo 12: Modelo experimental de uma reacao para controle da atitude de satelites artificiais: construcao, simulacao e testes 13: Reaction wheel experimental model of artificial satellite attitude control: construction, simulation, and tests 14: 931-934 52: ABCM 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 58: DMC 59: 508500 61: 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: constru‡Æo 87: testes 87: modelo experimental 87: roda de rea‡Æo 87: pequena capacidade 88: friction 88: reaction wheels 88: satellite attitude control 88: simulators 88: algorithms 88: computerized simulation 88: models 83: Este trabalho descreve os aspectos relativos ao projeto, … constru‡Æo e aos testes de um modelo experimental de uma roda de rea‡Æo de pequena capacidade. A roda em questÆo representa a consolida‡Æo do projeto descrito por Souza et al. Ap¢s a caracteriza‡Æo dos atritos da roda, simula‡äes foram realizadas em laborat¢rio com prot¢tipo constru¡do, dotado de um novo controlador de velocidade. Os resultados sÆo confrontados com simula‡äes em computador utilizando um algoritmo nÆo-linear para representar a passagem da velocidade por zero, demonstrando boa coerˆncia. Abstract: This work describes aspects of design, construction, simulation and tests of a low capacity reaction wheel experimental model. Computer simulations are presented using a nonlinear algorithm in order to represent the critical problem that occurs when the wheel speed has to cross near-zero velocities, where dry and stiction frictions cause a large degradation of actuator performance. After measurement of the friction paramaters, simulations were done in laboratory using a model including a new speed control system. The experimental results are compared with the computer simulations demonstrating a good coherence MFN: 5622 1: SID/SCD 2: 4275 3: INPE-4275-PRE/1147 4: ETES 5: MC 6: am 10: Lopes, Roberto Vieira da Fonseca 12: Modelagem de um amortecedor de nuta‡Æo para sat‚lites estabilizados por rota‡Æo 14: 761-764 18: Anais 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florianopolis 57: BR 58: DMC 59: 506435 61: 64: <1987> 68: PRE 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: amortecedor de nuta‡Æo 87: estabiliza‡Æo por rota‡Æo 87: sat‚lites artificiais 88: mathematical models 88: nutation dampers 88: satellite attitude control 88: spacecraft stability 88: spin stabilization 88: artificial satellites 88: orbital mechanics 88: satellite rotation 88: viscous damping 83: The modeling is presented of a partially filled off set ring nutation damper. The different actuation modes of this equipment as well as the experimental tests for its performance evaluation were considered. The theoretical basis is supplied to the design of a nutation damper for the first MECB's satellite MFN: 5623 1: SID/SCD 2: 4276 3: INPE-4276-PRE/1148 4: ETES 5: MC 6: am 10: Medeiros, Valder de Matos 12: analise da geometria orbital e manutencao da orbita de um satelite de observacao da terra 14: 6 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florianopolis 58: ETE 59: 508357 64: <1987> 68: PRE 76: ASTRODYNAMICS 87: ¢rbita sol cincrona 87: manuten‡Æo de ¢rbita 87: recobrimento 88: orbit calculation 88: orbital mechanics 88: satellite orbits 88: satellite perturbation 88: artificial satellites 88: earth observations (from space) 88: fuel consumption 88: orbital maneuvers 88: synchronous satellites 83: An introduction to a recurring sun-synchronous orbit is given so as to choose adequately an orbit for Earth monitoring satellites. An analysis of choice criteria is made taking into account the hardware of the satellite and the mission constraints. For the orbit maintenance, an introduction to the perturbation is given, concluding with a qualitative analysis of the orbit correction maneuvers and a quantitative analysis in terms of the fuel consumption 91: 8712 MFN: 5624 1: SID/SCD 2: 4277 3: INPE-4277-PRE/1149 4: ETES 5: MC 6: am 10: Santiago, Renata Santos Crespo 10: Sielawa, Jerzy Tadeusz 12: Escoamento rotativo de g s rarefeito entre dois cilindros coxiais com condi‡äes de escoamento (slip condition) 13: Rotational flow of rarefied gas between two coaxial cylinders with slip conditions 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 58: DMC 59: 500003 61: 64: <1987> 68: PRE 87: flu¡dos ratativos 87: propriedades 87: vari veis 87: ccondi‡Æo de escorregamento (slip) 88: fluid flow 88: rarefied gases 88: rotating fluids 88: slip flow vortices 88: boundary conditions 88: boundary layer flow 88: coaxial flow 88: cylindrical bodies 88: flow velocity 88: knudsen flow 88: temperature distribution 88: thermal conductivity 88: viscosity 83: A rotational flow of rarefied gas between two coaxial cylinders was considered. The external one was rotating, the internal one stationary. Knudsen number was assumed to be of the order of unity. Due to the formation of rarefied nucleus at the internal cylinder, boundary conditions at this point was considered to be the slip condition. The problem was solved for variable transport coefficients (i.e., variable viscosity and thermal conductivity). The distribution of velocity, temperature and some other parameters was obtained MFN: 5625 1: SID/SCD 2: 4278 3: INPE-4278-PRE/1150 5: MP 6: m 16: Galvao, Francisco Leme 18: Friction drag reduction (a speculative essay) 20: 5 58: DMC 59: REUFRI 61: 62: INPE 64: <1987> 68: PRE 76: FLUID MECHANICS AND HEAT TRANSFER 88: aerodynamic coefficients 88: boundary layers 88: friction drag 88: friction reduction 88: gas lubricants 88: gas dynamics 88: gas-solid interactions lift 88: molecular flow 88: rare gases 88: slip flow 88: surfaces 83: The application of gas dynamics concepts can clarify and explain many aspects of aerodynamic phenomena. In the case of friction drag, this approach suggests some new possibilities for its reduction, such as the use of ultrasmooth surfaces having specific physical and chemical characteristics, or used in conjunction with a noble gas lubricating layer. Such possibilities are discussed in the text which, due to the multidisciplinary knowledge involved, is kept at a conceptual and heuristic level MFN: 5626 1: SID/SCD 2: 4279 3: INPE-4279-PRE/1150 4: ETES 5: MC 6: am 10: Oliveira J¡nior, Ismael Em¡lio de 10: Silvares, Ot vio de Mattos. 12: Sistema de jatos de g s frio para o controle de atitude de sat‚lite - modelagem e simula‡Æo 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 / Brazilian Congress of Mechanical Engineering (COBEM) 54: 7-11 dez. <1987> 56: Florianopolis 57: BR 58: DMC 59: 508500 61: 64: <1987> 68: PRE 88: cold gas 88: control systems design 88: electromagnetism 88: gas jets 88: satellite attitude control 88: control valves 88: gas flow mathematical models 88: reaction wheels 88: simulation 88: time lag 83: A model is presented for cold gas jet systems employed in Satellite Attitude Control (SAC). The model includes the transient flow of the gas. During the transient, the control valve plays an important role in defining the time delay of the SAC. The valve is studied in detail through an electromagnetic analysis of its operation. The response of the system is represented through curves of its main parameters as a function of time. The model is applied to the simulation of the maneuvers of reaction wheel dessaturation and of satellite attitude change. MFN: 5627 1: SID/SCD 2: 4280 3: INPE-4280-PRE/1152 4: ETES 5: MC 6: am 10: Ribeiro, Jose Francisco 12: Um regulador LQG para os deslocamentos angulares do rotor de um girosc¢pio sintonizado 13: A LQG regulator for the angular motion of the rotor at a tuned gyroscope 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica, 11 (COBEM) 54: 7-11 dez. <1987> 56: Florianopolis 58: DMC 59: 508500 61: NC 68: PRE 76: INSTRUMENTATION AND PHOTOGRAPHY 87: dinƒmica de separa‡Æo 87: nuta‡Æo 87: controle de atitude 87: desalinhamento 88: angular velocity 88: linear quadratic regulator 88: Riccati equation 88: rotor speed 88: tuning fork gyroscopes 88: computer programs 88: control systems design 88: control theory 88: optimal control 88: strapdown inertia guidance 88: torque 83: A solution is presented for the rotor axis angular motion problem of a tuned gyro with two degrees of freedom. This problem is approached using the tools of optimal control theory supposing a linear, quadratic and Gaussian nature for it. The motivation for this problem results from the fact that its solution (computation of controller torques)is directly proportional to gyro input angular rates providing a form to estimate them. In the plant simulation and controller design, a special software, KEDDC, implemented on Communication Research Centre, Ottawa, Canada, was used MFN: 5628 1: SID/SCD 2: 4281 3: INPE-4281 4: ETES 5: MC 6: am 10: FONSECA,I.M. 12: DINAMICA DA SEPARACAO ENTRE O ULTIMO ESTAGIO DO VEICULO LANCADOR E O SATELITE 14: 4 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 58: DMC 59: 508209 61: 64: <1987> 68: PRE MFN: 5629 1: SID/SCD 2: 4282 3: INPE-4282-PRE/1154 4: ETES 5: S 6: as 10: Fleury, Agenor de Toledo 10: Souza, Petr“nio Noronha 10: Trivrlato, Gilberto da Cunha 10: Varotto, SebastiÆo Eduardo Corsatto 10: Ribeiro, Jos‚ Francisco 12: Simula‡Æo e testes de sistemas de controle de atitude e ¢rbita de sat‚lite considera‡äes gerais sobre um caso exemplo (INPE)e projetos de uma mesa de rota‡Æo controlada 14: 216-224 30: SBA Controle e Automa‡Æo 31: 1 32: 3 53: Congresso Brasileiro de Autom tica, 6 58: DMC 59: 508500 61: 64: jul. <1987> 68: PRE 87: sistemas de controle 87: atitude de orbita 87: simula‡Æo f¡sica de SCAO 87: projeto eletromecƒnico 88: orbital mechanics 88: performance tests 88: satellite attitude 88: control simulation 88: degrees of freedom 88: servocontrol 88: spacecraft maneuvers 83: The Attitude and Orbital Control System (AOCS)is a basic component of a satellite. In order to guarantee the correct performance of the AOCS, exhaustive testing has to be done in a laboratory, both at component and at system level. This work intends to present first the implementation of an AOCS Simulation Laboratory by INPE's Space Mechanics and Control Department, as an example case, briefly showing the technological results already accomplished. It presents as well the basic aspects related to design, manufacture, and tests of a one degree-of-freedom servo rate table. It also describes, at an introductory level, the design of a second controlled axis for the table MFN: 5630 1: sid/scd 2: 4283 3: INPE-4283-PRE/1155 4: ETES 5: MC 6: am 10: Fleury, Agenor de Toledo 10: Souza, Petr“nio Noronha 10: Cardieri, L. Victor C. 12: Aspectos construtivos de bancadas para simula‡Æo de sistemas de controle de atitude de sat‚lites artificiais 13: Construction aspects of testbeds for attitude control systems simulation of artificial satellites 14: 927-930 52: ABCM 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 / Brazilian Congress of Mechanical Engineering (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 58: DMC 59: 508500 61: 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: bancadas para simula‡Æo 87: projeto eletromecƒnica 87: Sistemas de Controle de Atitude e àrbita (SCAO) 88: satellite attitude control 88: test equipment 88: satellite orbits 88: satellite orientation 83: Este trabalho apresenta as principais considera‡äes relativas … constru‡Æo de duas bancadas para simula‡Æo de sistemas de Controle de Atitude e àrbita (SCAO)de sat‚lites, com utiliza‡Æo de equipamentos na malha. O objetivo dessas bancadas ‚ permitir acompanhamento r pido em laborat¢rio, das diversas fases envolvidas no projeto. Apresentam-se os projetos integrados das bancadas desenvolvidas no INPE e seus diversos componentes onde se utiliza basicamente tecnologia/nacional na fabrica‡Æo. Discutem-se os principais parƒmetros de desempenho desses equipamentos e resultados experimentais obtidos. Abstract: This work presents the basic aspects concerning the construction of two test beds for satellite Attitude and Orbit Control Systems (AOCS)hardware-in-the-loop tests. The main goal to be reached with these test beds is the fast accomplishment of laboratory results in the various phaess of an AOCS development, from its initial conceptual definition to a prequalification phase. The central equipment of these test beds consists of a one-degree-of-freedom air bearing table and a two-degree-of-freedom servo rate table Various AOCS components such as reaction wheels, cold gas jet propulsion system, telemetry/telecommand system and celestial simulators were also developed at INPE. The designs of the test beds as integrated equipments are presented. The main performance parameters and associated experimental results are presented and discussed as well MFN: 5631 1: SID/SCD 2: 4284 3: INPE-4284-PRE/1155 4: ETES 5: MC 6: am 10: Cardieri, Luiz Victor C. 10: Varotto, Sebastiao Eduardo C. 12: Projeto de um simulador dinƒmico com mancal esf‚rico aerost tico para testes de sistema de controle de atitude de sat‚lites artificiais 13: Design of a spherical air bearing simulator for tests of the attitude control system of artificial satellites 14: 5 53: Congresso Brasileiro de Engenharia Mecƒnica, 9. / Brazilian Congress of Mechanical Engineering (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 57: BR 58: DMC 59: 506435 61: 64: <1987> 68: PRE 76: GROUND SUPPORT SYSTEMS AND FACILITIES (SPACE) 87: mancal esf‚rico aerost tico 87: simula‡Æo f¡sica 87: controlede atitude 88: control simulation 88: control systems design 88: gas bearings 88: satellite attitude control 88: aerodynamics 88: artificial satellites 88: nutation dampers 88: specifications 88: spherical shells 83: The Spherical Air Bearing Dynamic Simulator (SIDMEA)is used to accurately reproduce the 3 degree of freedom movement of a satellite about its center of mass. The main specifications are presented for this simulator and the solutions adopted in its design, with emphasis on the bearing dimensioning. The configuration proposed for the tests of a nutation damper, which is part of the Attitude Control Systems of the MECB Data Collecting Satellite, is also shown MFN: 5632 1: SID/SCD 2: 4285 3: INPE-4285-PRE/1157 4: ETES 5: MC 6: am 10: Souza, Luiz Carlos Gadelha de 10: Souza, Marcelo Lopes de Oliveira e 12: An lise da sensibilidade de um sistema de controle de atitude de um sat‚lite artificial 13: Analysis of the sensitivity of the attitude control system of an artificial satellite 14: 4 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 58: DMC 59: 508209 61: 64: <1987> 68: PRE 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: sensibilidade 87: controle de atitude 87: satelites artificiais 88: artificial satellites 88: attitude control 88: control systems design 88: sensitivity 88: dynamic response 88: frequencies 88: moments of inertial 88: variability 83: The attitude control system of an artificial satellite is analyzed to sensitivity to variations in relevant parameters. Observing the frequency response behavior of the sensitivity function, it is possible to evaluate the sensitivity of the system with respect to a variation in one of its parameters. Having done this for the satellite moments of inertia, it is concluded that those functions are small, demonstrating that the control system performance is not changed significantly MFN: 5633 1: SID/SCD 2: 4286 3: INPE-4286-PRE/1158 4: ETES 5: MC 6: am 10: Silva, Wilson Cost¢dio Canesin da 10: Rao, Kondapalli Rama 10: Medeiros, V lder Matos de 12: Requisitos de corre‡Æo de ¢rbita para um sat‚lite de recursos naturais 14: 4 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 / Brazilian Congress of Mechanical Engineering (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 58: DMC 59: 508357 61: 64: <1987> 68: PRE 76: ASTRODYNAMICS 87: caracter¡sticas da ¢rbita 87: varia‡Æo dos elementos orbitais 87: requisitos de corre‡Æo 88: correction 88: orbit calculation 88: orbit decay 88: orbital mechanics 88: satellite perturbation 88: aerodynamic drag 88: artificial satellites 88: earth observations (from space) 88: flight mechanics 88: gravitational effects 83: The decay of the semimajor axis and the inclination of the orbit of an artificial Earth observation satellite is analyzed, considering the atmospheric drag perturbations in the former case and the lunar-solar gravitational attraction perturbations in the latter case. Finally, the orbit correction requirements, necessary for maintaining the satellite in the desired orbit, are defined MFN: 5634 1: SID/SCD 2: 4287 3: INPE-4287-PRE/1159 4: ETES 5: MC 6: am 10: Pilchowski, Hans-Ulrich 12: ESTRATEGIA DE CORRECAO DE ORBITA PARA SATELITE DE OBSERVACAO DA TERRA 13: Orbit correction strategy for an Earth observation satellite 14: 4 53: Congresso Brasileiro de Engenharia Mecƒnica, 9 / Brazilian Congress of Mechanical Engineers (COBEM) 54: 7-11 dez. <1987> 56: Florian¢polis 58: DMC 59: 508357 61: 64: <1987> 68: PRE 76: ASTRODYNAMICS 87: estrat‚gia de ajuste de ¢rbita 87: manobra de ajuste 87: semi eixo maior da ¢rbita 87: sat‚lites de observa‡Æo da terra 88: correction 88: orbit calculation 88: orbit perturbation 88: orbital maneuvers 88: orbital mechanics 88: aerodynamic drag 88: lunar gravitation 88: radiation pressure 88: satellite observation 88: solar gravitation 88: solar radiation 83: It is possible to examine the required maneuvers for orbit adjust once a nominal orbit for an Earth observing satellite is established. The required orbital corrections are determined by estimating the orbital element perturbation caused by air drag, solar and lunar attraction and the solar radiation pressure. This perturbation changes the synchronicity with the Sun's apparent motion and the near-recurring property. To prevent this effect, orbit adjust maneuvers become necessary in order to keep the orbital elements as near as possible to the nominal values MFN: 5636 1: SID/SCD 2: 4289 3: INPE-4289 4: COMP 5: MC 6: am 10: Yanasse, Horacio Hideki 10: Soma, Nei Yoshihiro 12: Um algoritmo pseudopolinomial exato para a equacao diofatima linear 0-1 14: 7 40: Pt 41: Pt 42: 53: CNMAC, 10 54: 21-25 set. <1987> 56: Gramada BR 58: LAC 59: 605107 61: 64: <1987> 68: PRE 76: COMPUTACAO APLICADA 87: ALGORITMOS 91: 8709 MFN: 5637 1: SID/SCD 2: 4292 3: INPE-4292-PRE/1163 4: FISPLASMA 5: MC 6: am 10: LUDWIG,G.O. 10: FERREIRA,J.L. 10: MONTES FILHO,A. 12: DOUBLE LAYER FORMED BY BEAM DRIVEM ION-ACOUSTIC TURBULENCE 14: 12 53: ENERGY INDEPENDENCE CONFERENCE ON FUSION ENERGY AND PLASMA PHYSICS 54: 17-21 Aug. <1987> 56: Rio de Janeiro 58: LAP 59: 60111X 61: 64: <1987> 68: PRE 91: 8708 MFN: 5638 1: SID/SCD 2: 4296 3: INPE-4296 4: FISPLASMA 5: S 6: as 7: 000 10: LUDWIG,G.O. 10: FERREIRA,J.l.. 10: MONTES FILHO,A. 12: EXPERIMENTAL INVESTIGATION OF DOUBLE LAYERS FORMED BY ION-ACOUSTIC TURBULENCE 30: PHYSICAL REVIEW LETTERS, 58: LAP 59: 60111X 61: 64: <1987> 68: PRE 91: 8707 MFN: 5642 1: SID/SCD 2: 4301 3: INPE-4301 4: COMB 5: MP 6: M 16: Calegao, Isabel Cristina Coelho 18: ALGUNS ASPECTOS DOS METODOS ALTERNATIVOS DE SINTESE DE HIDRAZINA 20: 28 58: LCP 59: 500003 61: 62: INPE 64: <1987> 68: RPQ 76: COMBUSTAO 87: cat lise 87: hidrazina MFN: 5645 1: SID/SCD 2: 4305 3: INPE-4305 4: ETES 5: MC 6: AM 10: SALGADO,A.E.M. 12: AVALIACAO DE UM MULTIPROCESSADOR DE COMUNICACAO EM REDE TOLERANTE A FALHAS 14: 20 53: SIMPOSIO EM SISTEMAS DE COMPUTADORES TOLERANTES A FALHAS, 2., CAMPINAS, AGO. 1987 54: ago. <1987> 56: Campinas 58: DSS 59: 200409 61: 64: <1987> 68: PRE 91: 8708 MFN: 5654 1: sid/scd 2: 4321 3: INPE-4321-TDL/288 4: ETES 5: T 6: M 16: Nogueira, Celso Figueiredo 18: Refinamento local do campo de tensÆo no m‚todo de elementos finitos 19: Local refinement of stress field by finite element method 20: 122 42: Instituto de Pesquisas Espaciais 50: Mestre 58: DMC 59: CMC 62: INPE 64: apr. <1987> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 76: NUMERICAL ANALYSIS 87: elementos finitos 87: refinamento 87: c lculo de tensäes 88: computer programs 88: finite element method 88: stress distribution 88: accuracy calculus of variations 88: computational grids 88: displacement 88: least 88: squares method 83: A stress refinement technique, for the Finite Element Method, is presented. This technique uses a principle of the Variational Calculus to profit on the better precision obtained for the nodal displacements via finite elements (Displacement Method). A finite element routine was developed for testing the technique and also to verify clearly what kind of problems would arise if the technique was implemented in a Finite Element Software, developed in the usual fashion. The results obtained are excellent compared both to a similar technique by Gilbert and Gorge (1981)and to a simple, but more expensive technique of adding more nodes to the mesh 91: 8708 MFN: 5655 1: SID/SCD 2: 4322 3: INPE-4322-PRE/550 4: FISPLASMA 5: MP 6: m 16: CASTRO,P.J. 18: TECNICAS DE MEDIDAS PARA CARACTERIZACAO DO GIROTRON 20: 38 58: LAP 59: 601136 64: <1987> 68: RPQ 91: 8708 MFN: 5656 1: SID/SCD 2: 4323 3: INPE-4323 4: COMB 5: MP 6: m 16: Calegao, Isabel Cristina Coelho 16: VIEIRA,R. 18: TESTES DE COMPATIBILIDADE DE MATERIAIS PARA SISTEMAS DE PROPULSAO A HIDRAZINA 20: 19 58: LCP 59: 500003 61: 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTAO 87: cat lise 87: prepara‡Æo de catalisadores 87: hidrazina 91: 8708 MFN: 5657 1: SID/SCD 2: 4326 3: INPE-4326-pre 4: ETES 5: MC 6: am 10: Diehl, JoÆo Benedito 10: Bergamini, Eduardo Whitaker 12: UMA ARQUITETURA COM PROCESSAMENTO PARALELO PARA COMPUTACAO INCREMENTAL 14: 24 53: SIMPOSIO BRASILEIRO DE ARQUITETURA DE COMPUTADORES/PROCESSAMENTO PARALELO, 1 54: <1987> 56: Gramado 58: DMC 58: DSS 59: 20210X 68: PRE 91: 8705 MFN: 5660 1: SID/SCD 2: 4330 3: INPE-4330 4: ETES 5: MP 6: M 16: OLIVEIRA,J.L. 16: KATO,M. 16: SILVA,O.O. 16: Milani, Paulo Giacomo 16: ORLANDO,V. 16: YAMAGUTI,W. 18: PADRONIZACAO DE DESENVOLVIMENTO DE SOFTWARE 20: 108 58: DMC 58: DSS 59: 500003 64: <1987> 68: NTC MFN: 5665 1: sSID/SCD 2: 4338 3: INPE-4338-RPE/553 4: ETES 5: MP 6: m 16: Hashioka, Mauro Hissao 16: Souza, Marcelo Lopes de Oliveira e 18: Estima‡Æo do consumo de g s de um sistema de controle de atitude de sat‚lites artificiais (utilizando "drf")em fase de ciclo-limite 19: Gas consumption estimation of an attitude control system of an artificial satellite (utilizing DRF)in limit cycle phase 20: 172 38: Trabalho de gradua‡Æo em Engenharia de Eletr“nica no ITA 58: DMC 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: controle de atitude 87: estabiliza‡Æo ativa 87: controlador DRF 87: atuador 87: consumo de gaïs frio 87: ciclo limite 88: feedback control 88: fuel consumption 88: gases 88: satellite attitude control 88: artificial satellites 88: fuel systems 88: mathematical models 88: torque 83: An important problem that appears when designing an artificial satellite attitude control system using the DRF (Derived Rate Feedback)controller is its gas consumption at limit cycle. This problem is solved: the gas consumption is calculated analytically and numerically either in the absence or in the presence of external torques. The numerical results agree with the analytical predictions perfectly. The effects of many system parameters on such gas consumption are analyzed through illustrative plots. They provide important background for designing those systems. The work also models the fluid system (which manipulates the gas)more precisely than in the available references to date, arriving at simple but useful models for the present calculations 91: 8709 MFN: 5668 1: SID/SCD 2: 4346 3: INPE-4346-PRE/1183 4: ETES 5: MC 6: am 10: Rios Neto, Altair 12: A necessidade de automa‡Æo no Brasil 13: The necessity of automation in Brazil 53: ReuniÆo Anual SBPC, 39; Simposio Multidisciplinar Impatos da Informatiza‡Æo e Automatica 58: DMC 59: 201448 64: <1987> 68: PRE 76: URBAN TECHNOLOGY AND TRANSPORTATION 87: automa‡Æo 87: controle automatico 87: desenvolvimento tecnol¢gico 88: automatic control 88: Brazil 88: industries 88: dynamical systems 88: technological forecasting 88: technology assessment 83: The subject of automation is considered from a multidisciplinary point of view. Initially a general characterization of the field of automation is done. The need for automation is analyzed from the perspective of the dynamics of technological evolution. The evaluation of the state of the Brazilian economy and its capacity to absorb the technology 91: 8709 MFN: 5669 1: SID/SCD 2: 4347 3: INPE-4347-RPQ 4: COMB 5: MP 6: m 16: Gill, Walter 16: Carvalho Jr., JoÆo Andrade 16: Bastos Netto, Demetrio 18: COMBUSTAO EM SPRAY 20: 54 42: 58: LCP 59: 203106 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTAO 91: 8709 MFN: 5673 1: SID/SCD 2: 4353 3: INPE-4353 4: COMB 5: MP 6: m 16: Fachini Filho, Fernando 16: VIEIRA,R. 18: NORMAS DE SEGURANCA PARA O MANUSEIO DO PEROXIDO DE HIDROGENIO 20: 26 42: 58: LCP 59: 200107 62: INPE 64: <1987> 68: NTC 76: COMBUSTAO 91: 8709 MFN: 5675 1: SID/SCD 2: 4355 3: INPE-4355 4: COMP 5: MC 6: am 10: SIMONI,P.O. 12: MODELAGEM MATEMATICA DE PROBLEMAS DE PERCEPCAO VISUAL 14: 9 53: CONGRESSO NACIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 10 54: 21-25 set. <1987> 56: Gramado 58: LAC 59: 60710X 61: 64: <1987> 68: PRE 91: 8709 MFN: 5678 1: SID/SCD 2: 4360 3: INPE-4360 4: COMB 5: MP 6: m 16: Rodrigues, Jos‚ Augusto Jorge 16: MOURE,G.T. 16: Cunha, Davis dos Santos 16: Cruz, Gilberto Marques de 18: DESENVOLVIMENTO DO SUPORTE ALUMINIA PARA FINS AEROESPACIAIS 20: 79 42: 58: LCP 59: 500003 62: INPE 64: <1987> 68: RPQ 76: COMBUSTAO 87: alumina 91: 8709 MFN: 5680 1: SID/SCD 2: 4364 3: INPE-4364 4: FISPLASMA 5: MC 6: am 10: GALVAO,R.M.O. 10: GOES,L.C.S. 10: LUDWIG,G.O. 10: MONTES FILHO,A. 10: UEDA,M. 12: CONCEPTUAL DESIGN OF A RADIO-FREQUENCY DRIVEN COMPACT TOKAMAK 14: 471 18: Proceedings 53: ENERGY INDEPENDENCE CONFERENCE ON FUSION ENERGY AND PLASMA PHYSICS 54: 17-21 Aug. <1988> 56: Rio de Janeiro 58: 040X 59: 601411 61: NC 68: PRE 91: 8708 MFN: 5681 1: SID/SCD 2: 4365 3: INPE-4365-NTI/282 4: FISPLASMA 5: PM 6: m 7: [07]533 16: Watanuki,J. 16: Dallaqua,Renato Sergio 16: Del Bosco, Edson 18: Manual de operacao de um laser de CO2 pulsado de 40MW 20: 28 40: En 41: En 42: 58: LAP 59: CENTIFUGA DE PLASMA 64: set. <1987> 66: Sao Jose dos Campos 67: BR 68: NTC 90: b 76: FISICA DE PLASMA 91: 8709 MFN: 5682 1: SID/SCD 2: 4374 3: INPE-4374-NTE/274 4: FISPLASMA 5: MP 6: m 16: Nono, Maria do Carmo de Andrade 18: ELETROFORMACAO: PRINCIPIOS ELETROQUIMICOS, PROCESSO DE ELETRODEPOSICAO E ELETROFORMACAO DE COBRE 20: 48 58: LAP 59: 601136 64: <1987> 68: NTC 91: 8709 MFN: 5683 1: SID/SCD 2: 4375 3: INPE-4375 4: FISPLASMA 5: MP 6: m 16: Nono, Maria do Carmo de Andrade 16: GALVAO,G.P. 18: ELETROFORMACAO DE COBRE A PARTIR DE BANHOS ACIDOS DE SULFATO: ESTUDOS PRELIMINARES 20: 29 58: LAP 59: 601136 64: <1987> 68: RPQ 91: 8709 MFN: 5684 1: SID/SCD 2: 4378 3: INPE-4378-PRE/1198 4: FISPLASMA 5: S 6: as 10: SILVA,T.L. 10: GALVAO,R.M.O. 12: NONLINEAR DIFFUSION IN THE PRESENCE OF A TIME-DEPENDENT EXTERNAL ELECTRIC FIELD 14: 605-608 30: PLASMA PHYSICS AND CONTROLLED FUSION 31: 30 32: 5 58: LAP 59: 601411 61: 64: <1988> 68: PRE 76: FISICA DE PLASMA 91: 8809 MFN: 5685 1: SID/SCD 2: 4379 3: INPE-4379-PRE/1199 4: FISPLASMA 5: S 6: as 10: BALLONI,A.J. 10: PAES,A.C.J. 10: MOURA NETO,C. 10: SOKI,K. 10: GALVAO,R.M.O. 12: CONSTRUCAO DE UM CANHAO DE ELETRONS PARA FUSAO DE METAIS 14: 114-127 30: Revista Brasileira de Aplica‡äes de V cuo 31: 7 32: 1-1 53: Congresso Brasileiro de Aplica‡äes de V cuo na Ind£stria e na Ciˆncia, 8 54: 22-24 Jul. <1987> 56: Rio de Janeiro 58: LAP 59: 601411 61: 68: PRE 91: 8709 MFN: 5686 1: SID/SCD 2: 4380 3: INPE-4380-PRE/1200 5: PM 6: m 7: PLA 16: PAES,A.C.J. 16: GALVAO,R.M.O. 16: BOSCOLO,P. 16: PASSARO,A. 18: ANALISE DE UM CANHAO DE ELETRONS PARA FUSAO DE METAIS 20: 27 58: LAS 59: 601411 64: <1987> 68: RPQ 91: 8709 MFN: 5695 1: SID/SCD 2: 4389 3: INPE-4389-PRE/1209 4: FISPLASMA 5: S 6: as 10: DENDY,R.O. 10: MONTES FILHO,A. 10: LEITE,J.P. 12: THE EFFECT OF ASYMMETRIC CURRENT-SUPPORTING ELECTRON VELOCITY DISTRIBUTIONS ON SECOND HARMONIC ELECTRON CYCLOTRON RESONANCE HEATING: A RAY-TRACING TREATMENT FOR THE COMPASS TOKAMAK 14: 1137-1141 30: PHYS. FLUIDS 31: 30 32: 4 58: LAP 59: 601411 61: 64: <1987> 68: PRE 76: FISICA DE PLASMA 91: 8704 MFN: 5704 1: SID/SCD 2: 4398 3: INPE-4398 4: COMB 5: MP 6: m 7: COB 16: Cunha, David dos Santos 16: Cruz, Jos‚ Augusto Jorge 16: Rodrigues, Jos‚ Augusto Jorge 16: Freitas, Antonio Gon‡alves de 18: Catalisadores de ir¡dio suportado sobre alumina: prepara‡Æo 20: 15 58: LCP 59: 508209 61: 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 90: b 76: COMBUSTAO 87: cat lise 87: ir¡dio 87: alumina 87: catalisadores 91: 8709 MFN: 5705 1: sid/scd 2: 4399 3: INPE-4399 4: COMB 5: MP 6: m 16: Anhalt, J. 16: ENNES,S.A.W. 18: ACTUAL PERFORMANCE AND ECONOMIC FEASIBILITY OF RESIDENTIAL SOLAR WATER HEATERS 20: 20 58: LCP 59: 200107 64: <1987> 68: RPQ 76: COMBUSTAO 91: 8709 MFN: 5706 1: SID/SCD 2: 4403 3: INPE-4403-NTE/275 4: ETES 5: MP 6: m 16: Kuga, Helio Koiti 16: Silva, Wilson Custodio Canesin 16: Guedes, Ulisses Thadeu Vieira 18: Dinƒmica de atitude para sat‚lites estabilizados por rota‡Æo 19: Attitude dynamics for satellites stabilized through spin 20: 34 58: DMC 59: 510912 64: <1987> 68: NTC 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: dinƒmica de atitude 87: modelagem 88: artificial satellites 88: attitude control 88: dynamic models 88: spin stabilization user 88: manuals (computer programs) 88: eddy currents 88: euler equations of motion 88: fortran gravitational effects 88: magnetic 88: fields 88: torque 83: A simplified dynamic modelling for the attitude motion of spin stabilized artificial satellites is proposed. Torques due to induced magnetic fields on the satellite, eddy currents, and gravity gradient are considered. The corresponding Euler equations are developed in convenient coordinates and solved by numerical integration. The ORTRAN program, as well as a user's manual, examples of use, and listings are described. 91: 8710 MFN: 5707 1: SID/SCD 2: 4405 3: INPE-4405-RPE/556 4: ETES 5: MP 6: m 16: Kuga, Helio Koiti 17: Met¢dos num‚ricos em propaga‡Æo de ¢rbita de sat‚lites artificiais terrestres 18: Numerical orbit propagation methods for earth artificial satellites 20: 62 50: Instituto de Pesqusas Espaciais 51: Exame de Integrado (Doutorado) 58: DMC 59: CMC 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 76: ASTRODYNAMICS 87: propaga‡Æo de ¢rbita 87: transforma‡Æo de tempo 88: artificial satellites 88: numerical analysis 88: orbit calculation 88: orbital mechanics 88: algorithms 88: differential equations 88: equations of motion 88: literature 88: orbit perturbation 83: Numerical orbit propagation for earth artificial satellites is described. The main orbital perturbations are summarized. Several formulations of the differential equations of motion as well as essential aspects of the ordinary differential equation resolution algorithms are considered. Qualitative aspects of the usual orbit propagation methods are also reviewed. Finally, an analysis of research trends from the literature is included MFN: 5708 1: SID/SCD 2: 4407 3: INPE-4407-TDL/304 4: ETES 5: T 6: m 16: Souza, Luiz Carlos Gadelha de 18: Controle de atitude de um sat‚lite artificial atrav‚s da extensÆo da teoria do regulador linear quadr tico 19: Attitude control of an artificial satellite through the extension of the linear quadratic regulator theory 20: 83 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: Set. <1987> 66: SÆo Jos‚ dos Campos 68: TDI 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: controle de atitude 87: teoria regulador 87: controle ¢timo 87: satelites artificiais 87: sistema de controle nÆo-linear 88: control theory 88: linear quadratic gaussian control 88: satellite 88: attitude control 88: control systems design 88: Euler equations of motion 83: A new attitude control law for artificial satellites is presented. It is based on an extension of the linear quadratic regulator theory to the case where the dynamics is described by a weakly nonlinear system of equations (Euler's equations). It focuses the mode of operation in which the satellite has smaller angular velocities and angles but has arbitrary reaction wheel velocities. It includes: (1)a comparison between this law and others simulated under the same conditions in the literature; (2)an evaluation of the behavior of the system output under the regulator and under its extension, while the initial conditions become large; (3)a study of the control system sensitivity with respect to variations in the satellite moments of inertia, and of the system performance when the estimate errors are modeled as random variables. The results obtained suggest that: (1)the implemented control law reduces the angular velocities and angles faster than the other law; (2)the presence of the nonlinear term in the implemented law makes it more robust than the law based on the regulator, for the dynamics considered; (3)the sensitivity of the control system with respect to a variation in the moments of inertia is small, and its performance in the presence of estimate errors is changed slightly 91: 8710 MFN: 5709 1: SID/SCD 2: 4408 3: INPE-4408-PRE/1221 4: ETES 5: MC 6: am 10: Selingardi, M. L. 10: Matos, J. D. 10: Bertolino, M. A. 10: Andrade, A. M. 10: Fonseca, F. J. 10: Sanematsu, M. S. 12: Caracteriza‡Æo de detetores fotovoltaicos integrados para os sensores solares da MECB 13: Characterization of integrated photovoltaic detectors for MECB solar sensors 14: 21 53: Congresso da Sociedade Brasileira de Microeletr“nica, 2 / SBMicro Conference of the Brazilian Society of Microelectronics (SBMicro) 54: 14-16 jul. <1987> 56: SÆo Paulo 58: DEA 59: 506486 61: 64: <1987> 68: PRE 76: INSTRUMENTATION AND PHOTOGRAPHY 87: detetores fotovoltaicos 87: sensor solar 87: determina‡Æo de atitude 88: attitude control photodiodes 88: photovoltaic cells solar 88: sensors 88: Brazilian Space Program 88: crosstalk 88: electro-optics 88: linearity microelectronics 88: photometers 88: solar position 88: temperature effects 83: The characterization tests are described of the integrated photovoltaic detectors developed by LME/USP. These detectors constitute the detection stages of the solar sensors to be used in attitude determination of the Brazilian Data Collecting Satellites of the Brazilian Complete Space Mission. The results of measurements of uniformity, cross talk, linearity and variation of the current with temperature carried out at Electrooptical Department at Instituto de Pesquisas Espaciais-INPE are presented MFN: 5710 1: SID/SCD 2: 4409 3: INPE-4409-PRE/1222 4: ETES 5: MC 6: am 10: Andrade, A. M. 10: Fonseca, F. J. 10: Sanematsu, M. S. 10: Selingardi, M. L. 10: Bertolino, M. A. 10: Dematos, J. D. 12: Desenvolvimento de detetores integrados para sensores de atitude 14: 15 53: Congresso da Sociedade Brasileira de Microeletr“nica / SBMicro Conference of the Brazilian Society of Microelectronics (SBMicro) 54: 14-16 jun. <1987> 56: SÆo Paulo 58: DEA 59: 506486 61: 64: <1987> 68: PRE 76: SPACECRAFT INSTRUMENTATION 87: detetores fotovolt icos 87: detetores integrados de s¡licio 87: sensor solaaar 88: photodiodes 88: photovoltaic cells 88: satellite attitude control 88: solar sensors 88: electro-optics 88: microelectronics satellite control 88: spin stabilization 83: The development is described of digital silicon integrated detectors to be used in attitude sensors for space vehicles such as data collecting artificial satellites. The device integrates a matrix, configured in a Gray code, of photodiodes of different dimensions. Two versions of detectors were developed, one for gravity gradient stabilized satellites and the other for spin stabilized satellites MFN: 5711 1: SID/SCD 2: 4410 3: INPE-4410 4: ETES 5: MP 6: m 16: Paula Jr., Alderico Rodrigues de 16: MENDES,R.A. 18: DIRECT TELEMETRY ENCODER SPECIFICATION 20: 14 42: 58: DSS 59: 20000X 62: INPE 64: <1987> 68: RTR 91: 8710 MFN: 5712 1: SID/SCD 2: 4411 3: INPE-4411-NTE/276 4: ETES 5: MP 6: m 16: Kuga, Helio Koiti 18: Algoritmos de determina‡Æo preliminar de ¢rbita: aplica‡Æo ao Sat‚lite Brasileiro 19: Preliminary orbit determination algorithms: Application to the Brazilian satellite 20: 22 58: DMC 59: 510912 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: NTC 76: ASTRODYNAMICS 87: determina‡Æo preliminar de ¢rbita 88: Algorithms 88: orbit calculation 88: spacecraft launching 88: artificial satellites 88: Gauss equation 88: orbital mechanics 88: satellite orbits 83: The performance of four preliminary orbit determination algorithms, namely: the Gauss method, f and g series method, Herrick-Gibbs method, and a modified method proposed by the authors are compared. They were applied to launching conditions of the first satellite of MECB. Results and comments are presented MFN: 5713 1: SID/SCD 2: 4412 3: INPE-4412-NTE/277 4: ETES 5: MP 6: m 16: Kuga, Helio Koiti 16: Guedes, Ulisses T. V 18: C lculo de eclipses para ¢rbitas el¡pticas 19: Calculation of eclipses for elliptical orbits 20: 47 58: DMC 59: 510912 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: NTC 76: ASTRODYNAMICS 88: computer programs 88: eclipses 88: elliptical orbits 88: artificial satellites 88: computer techniques 88: user manuals (computer programs) 83: The theoretical development of the eclipse phenomenon which occurs in orbits of artificial satellites is presented. The procedure was implemented in the computer, in standard FORTRAN language. Tests, user's manual, and an appendix containing the program listing are included 91: 8710 MFN: 5714 1: SID/SCD 2: 4413 3: INPE-4413 4: COMB 5: MP 6: m 16: Anhalt, J. 18: PHASE II REPORT TANKAGE ELEMENT APPROACH ON THE DEVELOPMENT 20: 61 42: 58: LCP 59: 500003 64: <1987> 68: RPQ 76: COMBUSTAO 91: 8710 MFN: 5715 1: SID/SCD 2: 4414 3: INPE-4414 4: COMB 5: MP 6: m 16: Gill, Walter 16: Carvalho Jr., JoÆo Andrade 16: Bastos Netto, Demetrio 18: DESIGN OF BURNERS 20: 17 58: LCP 59: 200107 64: <1987> 68: PUD 76: COMBUSTAO MFN: 5717 1: SID/SCD 2: 4417 3: INPE-4417 4: COMB 5: MP 6: m 16: Fachini Filho, Fernando 16: Gill, Walter 18: UTILIZACAO DE SENSORES PIEZOELETRICOS PARA MEDIR PRESSAO EM TESTES DE LONGA DURACAO 20: 17 42: 58: LCP 59: 200107 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTÇO 91: 8711 MFN: 5721 1: SID/SCD 2: 4433 3: INPE-4433-RPI 4: ETES 5: MP 6: m 16: Paula Junior, Alderico Rodrigues 18: Arquitetura de sistemas de computa‡Æo tolerantes a falhas 20: 52 42: 58: DSS 59: SUBORD 64: <1987> 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: arquitetura de computadores 87: tolerƒncia a falhas 87: redundƒncia 87: sistemas distribu¡dos 91: 8711 MFN: 5722 1: sid/scd 2: 4434 3: INPE-4434-NTI-283 4: ETES 5: MP 6: m 16: Cruz, Marcos Antonio Cardoso 18: Documento de especifica‡Æo de requisitos do componente rel 20: 9 41: Pt 42: Pt 50: 58: DSS 64: <1987> 68: NTC 75: ENGENHAIA E TECNOLOGIA ESPACIAL 76: MissÆo Espacial Completa Brasileira 76: MECB 76: conversÆo de rerepresenta‡Æo de tempo 91: 8711 MFN: 5725 2: 4438 3: INPE-4438-TDL/311 4: ETES 5: T 6: M 16: Vasconcellos, Jos‚ Carlos Penna de 18: Posicionamento geod‚sico com emprego de sat‚lites GPS-NAVSTAR aplicando t‚cnicas de VLBI e estima‡Æo seqencial recursiva de estado 19: Geodetic positioning by employment of the GPS-NAVSTAR satellites applying the techniques of VLBI and sequential recursive optimal estimation 20: 118 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: fev. <1987> 66: SÆo Jos‚ dos Campos 68: TDI 76: ASTRODYNAMICS 87: posicionamento geod‚sico 87: GPS 87: VLBI 87: filtro de Kalman 88: geodesy global positioning system 88: orbital position estimation 88: positioning 88: very long base interferometry 88: geodetic accuracy 88: geodetic coordinates 88: navstar satellites 83: By employing techniques of very Long Baseline Interferometry (VLBI)to the Global Positioning System (GPS), and using as receivers the Satellite Emission Range Inferred Earth Surveying (SERIES)system at the extremes of a baseline (one of these extremes being a known geodetic point), the coordinates of the other extreme are determined, the distance between them is calculated with very good accuracy, and the clock offsets are determined. In this way, the need of intermediary stations in the transport of geodetic coordinates for long distances is eliminated. The solution applies a stochastic sequential technique of optimal estimation. For test purposes, satellite orbits and observations carried out by the stations are simulated in a digital computer. The performance of the estimation procedure is analyzed in terms of accuracy, convergence and statistical consistency, by comparison of estimated and real results 91: 8712 MFN: 5726 1: SID/SCD 2: 4440 3: INPE-4440 4: ETES 5: MP 6: m 16: Diehl, JoÆo Benedito 18: COMPUTADOR ASTRO L-V2: CALCULO DA SOLUCAO DE SISTEMAS DE EQUACOES DIFERENCIAIS DE PRIMEIRA ORDEM 20: 32 58: DSS 59: 200603 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 91: 8712 MFN: 5727 1: SID/SCD 2: 4441 3: INPE-4441-TRT-111 4: ETES 5: MP 6: m 7: SAT 16: Paula Junior, Alderico Rodrigues 16: Johansen, Klaus Juergen 16: Mendes, Ricardo de Azevedo 16: Alonso, Jos‚ DamiÆo Duarte 18: On-board computer specification for mecb1/s1 satellite 20: 81 40: Pt 41: Pt 42: 58: DSS 59: SUBORD 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: MissÆo Espacial Completa Brasileira 88: On board 88: computer 88: processing 88: units 88: operacional program 88: telemetry format 91: 8712 MFN: 5728 1: SID/SCD 2: 4442 3: INPE-4442- 4: ETES 5: MP 6: m 16: Diehl, JoÆo Benedito 18: COMPUTADOR ASTRO L-V2: DESCRICAO LOGICA 20: 53 58: DMC 59: 200603 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 91: 8712 MFN: 5730 1: SID/SCD 2: 4444 3: INPE-4444-RPI/191 4: ETES 5: MP 6: m 16: Muraoka, Issamu 16: Oliveira, Filho, Olavo Bueno 16: Mantelli, M rcia Barbosa Henrique 18: An lise t‚rmica da antena UHF de servi‡o 20: 56 42: 58: DMC 59: 506273 62: INPE 64: <1987> 66: SÆo Jos‚ dos campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: controle t‚rmico de antena 87: controle t‚rmico de sat‚lite 87: modelo t‚rmico matem tico 91: 8712 MFN: 5731 1: SID/SCD 2: 4446 3: INPE-4446 4: COMB 5: MP 6: m 16: Fachini Filho, Fernando 16: VIEIRA,R. 18: ESTUDOS PRELIMINARES DA UTILIZACAO DA PARAFINA SOLIDA COMO PROPELENTE 20: 27 58: LCP 59: 200107 62: INPE 64: <1987> 68: RPQ 76: COMBUSTAO MFN: 5733 1: SID/SCD 2: 4449 3: INPE-4449 4: COMP 5: T 6: m 7: 681 16: OLIVEIRA,C.A. 18: PROCESSAMENTO DE LINGUAGEM NATURAL 20: 124 50: Instituto de Pesquisas Espaciais 51: Mestre 58: LAC 59: CAP 64: <1987> 68: TDI MFN: 5734 1: SID/SCD 2: 4450 3: INPE-4450-PRE/1236 4: FISMAT 5: S 6: as 10: GREENLY,J.B. 10: UEDA,M. 10: RONDEAU,G.D. 10: HAMMER,D.A. 12: MAGNETICALLY INSULATED ION DIODE WITH A GAS-BREAKDOWN PLASMA ANODE 14: 20 30: JOURNAL OF APPILED PHYSICS 31: 63 32: 6 58: LAS 59: 601411 61: 64: <1988> 68: PRE 91: 8803 MFN: 5735 1: sid/scd 2: 4451 3: INPE-4451 4: COMB 5: MP 6: m 16: Rodrigues, Jos‚ Augusto Jorge 18: ALUMINA MACROPOROSA: INFLUENCIA DO TEOR DE BICARBONATO DE AMONIO 20: 35 58: LCP 59: 508039 62: INPE 64: <1987> 68: RPQ 76: COMBUSTAO 87: cat lise 87: forma‡Æo de catalisadores 87: alumina MFN: 5737 1: SID/SCD 2: 4454 3: INPE-4454-TDL/315 4: ETES 5: T 6: m 16: Fabri, Sergio Mauri 18: Propaga‡Æo anal¡tica de orbitais de sat‚lites artificiais 19: Analytical orbit propagation of artificial satellites 20: 88 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 59: CMC 62: INPE 64: set. <1987> 66: SÆo Jos‚ dos Campos 68: TDI 76: ASTRODYNAMICS 87: m‚todos anal¡ticos 87: elementos m‚dios 87: m‚todo de Brouwer 88: analysis (mathematics) 88: artificial satellites 88: orbit calculation 88: mean 88: orbital mechanics 88: singularity (mathematics) 88: variability 83: The purpose of this study was to derive a set of variables with which to solve the problem of singularities in the usual analysis of satellite orbit propagation. Through a rearrangement of Brouwer expressions, a new set of variables is obtained. These variables allow transformations of oscillating elements to mean elements and vice versa. The mean elements are analytically propagated considering the geopotential perturbations (zonals, up to J sub 5). The method is also used to furnish mean elements for other analytical procedures for orbit propagation MFN: 5738 1: SID/SCD 2: 4455 3: INPE-4455-RPI/195 4: COMB 5: MP 6: m 7: COB 16: Carvalho Jr., JoÆo Andrade 16: Bressan, Cl udio 16: CalegÆo, Isabel Cristina Coelho 16: Pereira, Eduardo Agusto Gomes 16: Ferreira, Jorge Luiz Gomes 18: Testes preliminares de micropropulsor a hidrazina em condi‡äes atmosf‚ricas 20: 25 42: 58: LCP 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTAO 87: cat lise 87: forma‡Æo de catalisadores 87: micropropulsao 87: hidrazina 91: 8712 MFN: 5740 1: SID/SCD 2: 4464 3: INPE-4464-PRE/1239 4: ETES 5: MC 6: am 10: Ceballos, D‚cio Castilho 12: A feedback double path compensating control structure for the attitude control of a flexible spacecraft 14: 7 53: IFAC/IFIP Symposium on Software for Computer Control, 5 54: 26-28 Apr. <1988> 56: Johannesburg 57: South Africa 58: DMC 59: 20143X 61: 64: <1988> 68: PRE 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 88: attitude control 88: feedback control 88: flexible spacecraft 88: spacecraft control 88: adaptive control 88: optimization 88: parameter identification 83: A Feedback Double Path Compensating (FDPC)control structure is considered for the attitude control of a flexible spacecraft, where vibration modes and modeling errors are present. Parameter optimization is applied for finding the controller so as to have optimized behavior for a high-order model. The fourth-order FDPC controller was tested for the one-axis attitude control of a spacecraft with flexible appendages, whose dynamics were approximated by a fourteenth-order linear invariant model. The FDPC controller was compared with a low-order controller and is shown to be less sensitive to modeling errors MFN: 5741 1: SID/SCD 2: 4465 3: INPE-4465-tdl 4: COMP 5: T 6: m 16: SENNE,E.L.F. 18: MOTOR DE INFERENCIA PARA SISTEMAS ESPECIALISTAS 20: 176 50: Instituto de Pesquisas Espaciais 51: Doutor 58: LAC 59: CAP 62: INPE 64: dez. <1987> 66: SÆo Jos‚ dos Campos 68: TDI 76: COMPUTACAO APLICADA 91: 8804 MFN: 5742 1: SIDSID/SCD 2: 4468 3: INPE-4468-RTR/112 4: ETES 5: MP 6: m 16: Fleury, Agenor de Toledo 16: Souza, Petr“nio Noronha 16: Ferraresi, V.A. 16: Trivelato, Gilberto da Cunha 16: Ribeiro, Jos‚ Francisco 18: PROJETO, CONSTRUCAO E TESTES DE UMA MESA DE ROTACAO CONTROLADA 20: 184 40: Pt 41: Pt 42: 58: DMC 59: 508500 64: <1988> 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: controle de atitude 91: 8802 MFN: 5745 20: 16 40: En 41: En 42: 53: EURO IX/TIMS XXVIII Joint International Cconference 54: 06-08 July <1988> 56: Paris 57: FR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930623 92: FDB-MLR 101: D 1: SID/SCD 2: 4474 3: INPE-4474-PRE/1242 4: COMP 5: MC 6: am 7: [07] 10: Morais, Paulo Renato de 10: Solon, Venancio de Carvalho 12: Optimal control of a maintenance system with a variable number of servers 14: 16 MFN: 5746 1: SID/SCD 2: 4475 3: INPE-4475-PRE/1243 4: ETES 5: MC 6: am 10: Mantelli, M rcia Barbosa Henrique 12: Multilayer thermal insulation tests 14: 20 53: WORLD CONFERENCE ON EXPERIMENTAL HEAT TRANSFER, FLUID MECHANIS AND THERMODYNAMICS, 1 54: 4-9 Set. <1988> 56: Dubrovnik 57: Yugoslavia 58: DMC 59: 506303 61: EC 68: PRE 88: BRAZILIAN SPACE PROGRAM 88: EMISSIVITY 88: HEAT MEASUREMENT 88: LAMINATES 88: THERMAL INSULATION 88: FLUID MECHANICS 88: HEAT TRANSFER THERMODYNAMICS 83: The main purpose of this work is to make experimental measurements of the effective emittance of Multilayer Thermal Insulation (MLI)constructed from Brazilian materials. The emissivities obtained are compared with theoretical and literary references. Heat is carefully calculated and a study of the resulting uncertainties made. The results obtained are encouraging and it is possible to produce and furnish the neceassary thermal blankets for Brazilian satellites. New materials are sought and additional MLI configurations will be tested 91: 8802 MFN: 5747 1: sid/scd 2: 4484 3: INPE-4484 4: COMB 5: MP 6: m 16: ARAUJO,T.M. 16: Gill, Walter 18: APLICACAO DE MAQUINAS COM DESLOCAMENTO POSITIVO EM MOTOR-FOGUETE LIQUIDO 20: 14 58: LCP 59: 203122 64: <1988> 68: RPQ 76: COMBUSTAO 91: 8803 MFN: 5748 1: SID/SCD 2: 4492 3: INPE-4492-PRE/1256 5: MC 6: AM 7: [07] 10: Oliveira, Eni Alvin 12: Um sistema para a determinacao de campos de ventos a partir do rastreio de nuvens: a experiencia do INPE 14: 16 40: Pt 41: Pt 41: En 42: 53: Seminario Latinoamericano sobre Sensores Remotos, 2 54: nov. <1987> 56: Bogota 57: CO 58: DPI 59: PREPRO 61: 62: INPE 64: <1987> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 83: Este trabalho descreve parte de uma pesquisa visando ao desenvolvimento de um sistema automatico para a determinacao de ventos em baixos niveis sobre o oceano. Sao descritos em detalhes duas etapas do sistema (selecao e rastreiro de nuvens), acrescida de uma, de pre-processamento, com influencia sensivel na qualidade dos resultados. As diversas alternativas consideradas em cada uma das fases e os resultados obtidos sao apresentados, indicando-se as melhores solucoes 91: 8707 MFN: 5750 1: SID/SCD 2: 4505 3: INPE-4505-PRE/1260 4: COMP 5: S 6: as 7: [07] 10: Soma, Nei Yoshihiro 10: Yanasse, Horacio Hideki 12: A graphical solution procedure for linear diophantine equations 14: 24 20: 20 30: Siam Journal on Algebraic Discrete Methods 38: En 40: En 41: 58: LAC 61: 64: <1988> 68: PRE 91: FDB-19930623 92: FDB-MLR 101: D MFN: 5751 2: 4508 3: INPE-4508-TDL/327 4: etes 5: T 6: M 16: Bertolino, Marcos Antonio 18: Desenvolvimento de um sensor solar digital para sat‚lite estabilizado em rota‡Æo 19: Development of a digital sun sensor for a spin-stabilized satellite 20: 140 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DSS 59: ECO 62: INPE 64: dez. <1987> 68: TDI 76: SPACECRAFT INSTRUMENTATION 87: sensor solar digital 87: determina‡Æo de atitude 87: or‡amento de erros 88: digital techniques 88: functional design specifications 88: mathematical models 88: measuring instruments 88: solar activity 88: spin stabilization 88: transfer functions 88: angular resolution 88: Brazilian Space Program 88: errors fabrication 88: gray scale 88: scientific satellites 83: Some general features related to sun sensor development for a spin stabilized satellite are presented. The sensor is of the digital type with a 7 bit gray code, angular resolution of 1 deg, with the code printed on the photodiode array. Consideration is given to equipment characteristics and components, transfer function modeling and test results, which prove the sensor operation is in agreement with predicted specifications. Emphasis is given to the error budget, in which an accuracy of 40 arc minutes is obtained, through addition of error components. Fabrication processes are analyzed, to ensure the feasibility of obtaining the required accuracy. This sensor will be used in the Data Collection Satellite of the Brazilian Complete Space Mission MFN: 5752 1: SID/SCD 2: 4509 3: INPE-4509-PRE/1263 4: FISPLASMA 5: S 6: as 7: PLA 10: DEL BOSCO,E. 10: DALLAQUA,R.S. 10: Bittencourt, Jose Augusto 10: LUDWIG,G.O. 12: VACUUM-ARC PLASMA CENTRIFUGE EXPERIMENT 14: 701-704 30: IEEE Transaction on Plasma Science 31: 17 32: 5 40: En 41: En 42: 53: INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM, 13 54: 27-30 June <1988> 56: Paris 57: FR 58: LAP 58: DAE 59: 601128 61: 64: <1989> 68: PRE 91: 8804 MFN: 5753 1: SID/SCD 2: 4515 3: INPE-4515-NTI/286 4: COMB 5: MP 6: m 7: COB 16: AbrÆo, Ronaldo Bologna 18: Projeto de filtro de part¡culas e de filtro de umidade para linha de hidrazina 20: 50 42: 58: DMC 59: 508039 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: NTC 76: COMBUSTAO 87: cat lise 87: forma‡Æo de catalisadores 87: hidrazina 91: 8804 MFN: 5754 1: SID/SCD 2: 4516 3: INPE-4516-RPQ/564 4: ETES 5: MP 6: m 7: COB 16: Fachini Filho, Fernando 16: Migueis, Carlos Eduardo Seraphico de Souza 16: Gill, Walter 16: Bastos Netto, Demetrio 18: CombustÆo de uma p¢lvora de base dupla em presen‡a de gases inertes 19: Combustion of a double base fuel in the presence of inert gases 20: 17 58: LCP 59: 200107 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTAO 87: base dupla 87: combustÆo de p¢lvora 87: g s inerte 88: combustion chambers 88: double base rocket propellants 88: rare gases 88: solid propellant rocket engines 88: gas injection 88: reliability 88: thrust control 88: thrust vector control 83: Solid propellant rocket engines are simple and reliable; however, they have the disadvantage of permitting only directional control of the thrust. This work is a continuation of an ongoing effort to understand the mechanism of thrust level modulation using inert gas injection into the combustion chamber. Here, tests are done using combustion bombs, analyzing the effect of the presence of inert gases on the burning of a double base fuel MFN: 5755 1: SID/SCD 2: 4524 3: INPE-4524-RPI/197 4: COMB 5: MP 6: m 16: CalegÆo, Isabel Cristina 16: Marchesato, Carlos Alberto 16: Tolomelli, Carlos Fernando 18: Produ‡Æo industrial de hidrazina pela oxida‡Æo qu¡mica de am“nia 20: 28 42: 58: LCP 59: 508039 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTAO 87: cat lise 87: forma‡Æo de catalisadores 87: hidrazina 87: s¡ntese de hidrazina 87: produ‡Æo industrial 87: oxida‡Æo 87: am“nia 91: 8804 MFN: 5756 1: SID/SCD 2: 4531 3: INPE-4531-RPI/199 4: ETES 5: MP 6: m 7: COB 16: Gill, Walter 16: GuimarÆes, Antonio Luis da Silva 18: Avalia‡Æo do comportamento t‚rmico de um motor-foguete bipropolente liquido com cƒmara de combustÆo nÆo refrigerada 20: 18 42: 58: LCP 59: BIPROL 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTÇO 87: tempo de opera‡Æo 87: motor foguete nÆo refrigerado 87: parede composta 87: revestimento t‚rmico MFN: 5758 1: SID/SCD 2: 4535 3: INPE-4535 4: ETES 5: MC 6: am 10: GUSELLA JR.,E. 12: ANALISE DE REDES COM PARAMETROS S: GENERALIZACAO DA MATRIZ DE LIGACAO 14: 287-292 53: Simp¢sio Brasileiro de Microondas, 3 54: 27-29 jul. <1988> 56: Natal 58: DEA 59: 200204 61: 64: <1988> 68: PRE 91: 8807 MFN: 5759 1: SID/SCD 2: 4536 3: INPE-4536 4: ETES 5: MC 6: am 10: SILVA,C.M. 10: GUSELLA JR.,E. 12: DEFINICAO DE ACESSOS EM MULTIPOLOS CARACTERIZADOS PELA MATRIZ DE ADMITANCIA INDEFINIDA 14: 10 53: Simp¢sio Brasileiro de Microondas, 3 54: 27-29 jul. <1988> 55: Natal 58: DEA 59: 200204 61: 64: <1988> 68: PRE 91: 8807 MFN: 5761 1: SID/SCD 2: 4540 3: INPE-4540 4: ETES 5: MC 6: am 10: Marshall, Paulo Melo 12: DIPLEXADOR DE BANDA S PARA UM TRANSPONDER DE TELECOMUNICACOES DE BORDO 14: 7 53: Simp¢sio Brasileiro de Microondas, 3 54: 27-29 jul. <1988> 56: Natal 58: DEA 59: 506575 61: 64: <1984> 68: PRE 91: 8807 MFN: 5762 1: SID/SCD 2: 4542 3: INPE-4542-PRE/1288 4: COMP 5: MC 6: am 7: [07] 10: Rodrigues, Valter 10: Vescovi, Marcos V 12: The knowledge based automatic extraction of the machinablle surfaces for automatic CAD-CAM system 14: 13 40: En 41: En 42: 53: Congresso Latino Americano de Automatica 54: 03-07 Oct. <1988> 56: Chile 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930623 92: FDB-MLR 101: D MFN: 5763 1: SID/SCD 2: 4543 3: INPE-4543-PRE/1289 4: FISPLASMA 5: MC 6: am 7: PLA 10: Alves, Maria Virginia 10: Bittencourt, Jose Augusto 12: SIMULATION OF DOUBLE LAYERS 14: 3 53: LATIN-AMERICAN WORKSHOP IN PLASMA PHYSICS, 3 54: 18-29 July <1988> 56: Chile 58: LAP 58: DAE 59: 60111X 61: 62: <1988> 68: PRE 91: 8807 MFN: 5764 1: SID/SCD 2: 4545 3: INPE-4545-PRE/1291 4: FISPLASMA 5: MC 6: am 7: PLA 10: SHIBATA,C.S. 10: MONTES,A. 12: PROPAGATION AND DAMPING PF WHISTLER WAVES IN TOKAMAKS 14: 3 53: LATIN-AMERICAN WORKSHOP IN PLASMA PHYSICS, 3., CHILE, JULY 18-29, 1988 54: 18-29 July <1988> 58: LAP 59: 601411 61: 64: <1988> 68: PRE 91: 8807 MFN: 5765 1: SID/SCD 2: 4546 3: INPE-4546 4: FISPLASMA 5: MC 6: am 10: CORREA,R.A. 10: BARROSO,J.J. 10: MONTES,A. 12: DERIVATION OF EQUATION'S REDUCED EQUATIONS AND ITS APPLICATION TO THE ANALYSIS OF RESONANT CAVITIES 14: 3 53: LATIN-AMERICAN WORKSHOP IN PLASMA PHYSICS 54: 18-29 Juky <1988> 56: Chile 58: LAS 59: 601136 61: 64: <1988> 68: PRE 91: 8807 MFN: 5766 1: sid/scd 2: 4547 3: INPE-4547 4: FISPLASMA 5: MC 6: am 7: PLA 10: DEL BOSCO,E. 10: DALLAQUA,R.S. 10: Bittencourt, Jose Augusto 10: LUDWIG,G.O. 12: VACUUM-ARC PLASMA CENTRIFUGE EXPERIMENT 14: 3 53: LATIN-AMERICAN WORKSHOP IN PLASMA PHYSICS, 3 54: 18-29 July <1988> 56: Chile 58: LAP 58: DAE 59: 601128 64: <1988> 68: PRE 91: 8807 MFN: 5767 1: SID/SCD 2: 4548 3: INPE-4548 4: FISPLASMA 5: MC 6: AM 10: BARROSO,J.J. 10: GALVAO,G.P. 12: ANALYSIS OF MIG-TYPE ELECTRON GUNS FOR A 35GHZ GYROTRON 14: 3 53: LATIN-AMERICAN WORKSHOP IN PLASMA PHYSICS, 3 54: 18-29 July <1988> 56: Chile 58: LAS 59: 601136 61: 64: <1988> 68: PRE 91: 8807 MFN: 5768 1: SID/SCD 2: 4549 3: INPE-4549 4: FISPLASMA 5: MC 6: am 10: ASO,Y. 10: SHIBATA,C.S. 10: UEDA,M. 12: PLASMA EXPERIMENT IN A SMALL REVERSED FIELD PINCH APPARATUS AT INPE 14: 3 53: LATIN-AMERICAN WORKSHOP IN PLASMA PHYSICS, 3 54: 18-29 July <1988> 56: Santiago 57: CH 58: LAP 59: 601160 61: 64: <1988> 68: PRE 91: 8807 MFN: 5769 1: SID/SCD 2: 4550 3: INPE-4550 4: FISPLASMA 5: MC 6: am 10: FERREIRA,J.L. 10: URRUTIA,J.M. 10: STENZEL,R.L. 12: OBSERVATIONS OF CURRENT FLOW TO A POSITIVELY POLARIZED ELECTRODE IN A QUIESCENT MAGNETOPLASMA 14: 31 53: LATIN-AMERICAN WORKSHOP IN PLASMA PHYSICS, 3 54: 18-29 July <1988> 56: Santiago 57: CH 58: LAP 59: 60111X 61: 64: <1988> 68: PRE 91: 8807 MFN: 5770 1: SID/SCD 2: 4554 3: INPE-4554-PRE/1297 4: COMP 5: MC 6: am 7: [07] 10: Viola, Francisco E.C. 10: Fernandes, Davi T. 10: Ciurria, Mario J.C. 10: Stephany, Stephan 10: Sawame, H.H. 10: Amorim, Maria C.A. 10: Benatti, Ana R. 12: Um software para o banco de testes de satelites do INPE 14: 6 40: Pt 41: Pt 41: En 42: 53: Seminario Integrado Hardware-Software SEMISH 88 54: julho <1988> 56: Rio de Janeiro 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5774 1: SID/SCD 2: 4565 3: INPE-4565 4: COMP 5: MC 6: am 10: SENNE,E.L.F. 12: MOTOR DE INFERENCIA PARA SISTEMAS ESPECIALISTAS 14: 14 53: SCCC INTERNATIONAL CONFERENCE ON COMPUTER SCIENCE, 8. 54: jul. <1988> 56: Santiago 57: CH 58: LAC 59: 60500X 61: 64: <1988> 68: PRE 76: COMPUTACAO APLICADA 91: 8807 MFN: 5775 1: SID/SCD 2: 4571 3: INPE-4571-PRE/1311 4: COMP 5: MC 6: am 7: [07] 10: Viola, Francisco E.C. 10: Fernandes, Davi T. 10: Ciurria, Mario C.A. 10: Amorim, Maria C.A. 10: Benatti, Ana R 12: The checkout sistem software for the Brazilian satellite 14: 14 40: En 41: En 42: 53: Congresso Latino Americano de Automatica 54: 3-7 Oct. <1988> 56: Vina Del Mar 57: Chile 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5776 1: SID/SCD 2: 4572 3: INPE-4572 4: ETES 5: PM 6: M 16: Vaz, C‚lio Costa 16: Gill, Walter 18: UMA ESTRATEGIA PARA O DESENVOLVIMENTO DE MODELOS DE SIMULACAO DE SISTEMAS DE AQUECIMENTO SOLAR RESIDENCIAL 20: 52 58: DEA 59: 200107 64: <1988> 68: RPQ MFN: 5778 1: SID/SCD 2: 4574 3: INPE-4574-NTE/280 5: PM 6: M 7: 621 16: LUDWIG,G.O. 16: DEL BOSCO,E. 16: MONTES,A. 18: MAGNETIC MOMENT TEST REPORT FOR THE MODEL SAR 8108 BATTERY 20: 14 58: LAP 59: 601101 64: <1988> 68: NTC 91: 8805 MFN: 5779 1: SID/SCD 2: 4576 3: INPE-4576-RPE/568 4: FISPLASMA 5: PM 6: m 7: [07]533 16: Ueda, Mario 16: Machida, M 18: Feixe intenso de particulas de aplicacoes multiplas 20: 41 40: En 41: En 42: 58: LAP 59: PLASMA TORODAL 64: jun. <1988> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: FISICA DE PLASMA 91: 8806 MFN: 5780 1: SID/SCD 2: 4578 3: INPE-4578 4: ETES 5: MP 6: m 16: Bergamini, Eduardo Whitaker 18: PROPOSTA DE ARQUITETURAS COM PROCESSAMENTO PARALELO CRESCENTE PARA O COMPUTADOR INCREMENTAL ASTRO L-V3 20: 28 58: DSS 59: 20210X 64: <1988> 68: RTR MFN: 5781 1: SID/SCD 2: 4581 3: INPE-4581 4: ETES 5: MC 6: am 10: Miranda, Carlos Alberto Iennaco 12: THEORETICAL AND EXPERIMENTAL ANALYSIS OF QUADRIFILAR ANTENNAS FOR THE FIRST BRAZILIAN SATELLITE 14: 28 53: DFVLR/CTA WORKSHOP ON ANTENNA, PROPAGATION AND SCATTERING 54: 10-14 Aug. <1987> 58: DEA 59: 506583 61: 64: <1987> 68: PRE 91: 8708 MFN: 5783 1: SID/SCD 2: 4585 3: INPE-4585 4: COMB 5: MP 6: m 16: DEL MARCHESATO,C.A. 16: Tolomelli, Carlos Fernando 16: Calegao, Isabel Cristina Coelho 16: BASTOS,L.C.A. 18: ESTRUTURACAO DE DADOS RELATIVOS AO DESENVOLVIMENTO DO PROCESSO DE OBTENCAO DE HIDRAZINA HIDRATADA 20: 55 58: LCP 59: 508039 61: 64: <1988> 68: RPQ 76: COMBUSTAO 87: cat lise 87: forma‡Æo decatalisadores 87: hidrazina MFN: 5785 1: SID/SCD 2: 4589 3: INE-4589-NTI/287 4: FISPLASMA 5: MP 6: m 16: FERREIRA,J.F. 18: ATIVIDADES NO LABORATORIO DE FISICA DE PLASMA DA UNIVERSIDADE DA CALIFORNIA EM LOS ANGELES 20: 38 42: 58: LAP 59: 60111X 64: <1988> 68: NTC 91: 8806 MFN: 5787 1: SID/SCD 2: 4595 3: INPE-4595-PRE/560 4: CEA 5: S 6: as 7: [07] 10: Bittencourt, Jose Augusto 10: Alves, Maria Virginia 12: Simulacao computacional de fenomenos em plasma utilizando particulas 14: 297 30: Revista Ciencia e Cultura (Suplemento) 31: 39 32: 7 40: En 41: En 42: 58: DAS 59: 60111X 61: 64: <1987> 68: PRE 90: b 91: 8807 MFN: 5790 1: SID/SCD 2: 4600 3: INPE-4600-PRP?156 4: FISPLASMA 5: MP 6: m 17: Instituto de Pesquisas Espaciais. LaboratorioAssociado de Plasma 18: PROPOSTA DE FINANCIAMENTO PARA O PROJETO PLASMA DO LABORATORIO ASSOCIADO DE PLASMA DO INSTITUTO DE PESQUISAS ESPACIAIS (PLASMA/LAP/INPE) 20: 191 58: LAP 59: 601101 64: <1988> 68: PRP 91: 8807 MFN: 5791 1: SID/SCD 2: 4605 3: INPE-4605 4: FISPLASMA 5: MC 6: am 7: 533 10: FERREIRA,J.L. 10: FERREIRA,J.G. 10: SANDONATO,G.M. 10: ALVES,M.V. 10: LUDWIG,G.O. 10: MONTES,A. 12: EXPERIMENTAL STUDIES ON THE SURFACE CONFINED QUIESCENT PLASMA AT INPE 14: 377-386 21: v.3 Space Science and Tchnology and Plasma Physics 53: Japan-Brazil Symposium on Science and Technology,6 54: 10-12 Aug. <1988> 56: Sao Jose dos Campos 58: LAP 59: 60111X 61: 64: <1988> 68: PRE 91: 8808 MFN: 5792 1: SID/SCD 2: 4613 3: INPE-4613 4: FISPLASMA 5: MC 6: am 7: 533 10: UEDA,M. ASO,Y. 12: RFP PLASMA EXPERIMENT AT INPE 14: 340-347 21: v.3 Space Science and Tchnology and Plasma Physics 53: Japan-Brazil Symposium on Science and Technology,6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 58: LAP 59: 601160 61: 68: PRE 91: 8808 MFN: 5793 1: SID/SCD 2: 4616 3: INPE-4616-PRE/1339 4: COMP 5: MC 6: am 7: [07] 10: Nogueira, C.A. Marques 10: Rodrigues, Valter 12: Planejamento para um sistema de navegacao visual 14: 9 40: Pt 41: Pt 41: En 42: 53: Congresso Latinoamericano de Automatica, 3 54: 3-7 Oct. <1988> 56: Vina Del Mar 57: Chile 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5794 1: SID/SCD 2: 4617 3: INPE-4617-PRE/1340 4: COMP 5: MC 6: am 7: [07] 10: Nogueira, C.A. Marques 10: Rodrigues, Valter 12: O problema de planejamento em um sistema de navegacao visual 14: 1022-1026 21: v.2 40: Pt 41: Pt 41: En 53: Congresso Brasileiro de Automatica, 7 54: 15-19 ago. <1988> 56: Sao Jose dos Campos 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 83: A representa‡Æo do conhecimento do ambiente necess rio ao planejamento autom tico de caminhos ‚ um problema importante nas aplica‡äes com rob“s moveis. Neste artigo ‚ apresentada uma forma de representa‡Æo hier rquica desse conhecimento .Essa representa‡Æo permite explorar atributos de visibilidade do ambiente que resultam em uma redu‡Æo no caminho final planejado. Atuando sobre a representa‡Æo existe um sistema de planejamento que permite a realiza‡Æo da gera‡Æo e monitoramento do plano simultaneamente. A representa‡Æo utilizada d  ao sistema a capacidade de aprendizagem a respeito do ambiente e dos obst culos encontrados durante a realiza‡Æo de uma tarefa. The representation of the knowledge about the environment necessary to the automatic planning of paths is an important problem in mobile robots applications. This paper presents a hierarchical representation of this knowledge. This representation enables the exploration of visibility factors which result in a reduction of the final planned path. There is a planning system working on this representation that realizes generation and execution monitoring of the plan simultaneously. The representation which is used enables the learning about the environment and the obstacles that are found during task execution 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5795 2: 4618 3: INPE-4618-TDL/335 4: ETES 5: T 6: m 16: Trivelato, Gilberto da Cunha 18: Controle de rodas de rea‡Æo atrav‚s de t‚cnicas digitais usando modelos de referˆncia 19: Control of reaction wheels through digital techniques using reference models 20: 209 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 59: CMC 62: INPE 64: fev. <1988> 68: TDI 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: controle de atitude 87: rodas de rea‡Æo 87: quantiza‡Æo 87: controle digital de torque 87: modelo de referˆncia 87: simula‡Æo versus experimento 88: attitude control 88: digital command systems 88: reaction wheels 88: satellite control 88: models 88: noise simulation 88: torque 83: The study and the development of digital control systems for reaction wheel torques (used in the attitude control of artificial satellites)are considered. Model-following control techniques are used to reduce the effects of: (1)wheel disturbing torques, and (2)wheel sensor noises, on wheel torque. Initially, it presents the formulation of the problem, the simplifications done, the reference model and the real model of the reaction wheel used. Then it selects the candidate controllers and the criteria for choosing their parameters. Finally, two of the selected controllers (proportional - P - and proportional plus integral - PI - with velocity feedback)are tested by digital simulation and hardware implementation. These tests show that: (1)the model-following technique is adequate to the problem' (2)both controllers satisfy those objectives; (3)the P controller is better than the PI in this case; (4)the adopted criteria are satisfactory; and (5)the digital simulation of the reaction wheel is qualified for digital simulations of attitude control systems 91: 8810 MFN: 5799 1: SID/SCD 2: 4623 3: INPE-4623 4: ETES 5: MP 6: m 16: ESTEVES,L.C. 16: DurÆo, Otavio Santos Cupertino 18: ANALISE DE SISTEMAS COMPUTACIONAIS ATENDENDO AOS PROJETOS SET E SISTEMA REDACE 20: 73 58: DMC 59: 202150 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ MFN: 5800 1: SID/SCD 2: 4625 3: INPE-4625-RPI/206 4: ETES 5: MP 6: m 16: GuimarÆes, Antonio Luis da Silva 18: Ensaios de caracteriza‡Æo da balan‡a de empuxo 20: 17 41: 58: DMC 59: 508039 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGNEHARIA E TECNOLOGIA ESPACIAL 87: empuxo 87: impulso 87: balan‡a de empuxo 91: 8807 MFN: 5801 1: SID/SCD 2: 4628 3: INPE-4628 4: COMB 5: MP 6: m 16: Zacharias,M.A. 16: SACHETT,C.M.M. 16: Cruz, Gilberto Marques de 18: ALUMINAS ESPECIAIS - RELATORIO I 42: 58: LCP 59: 508039 64: <1988> 68: RPQ 76: COMBUSTAO 87: cat lise 87: prepara‡Æo de catalisadores 87: alumina 91: 8808 MFN: 5803 1: SID/SCD 2: 4630 3: INPE-4630 4: COMB 5: MP 6: m 16: Zacharias,M.A. 16: SACHETT,C.M.M. 16: Cruz, Gilberto Marques de 18: ALUMINAS ESPECIAIS - RELATORIO III 20: 38 42: 58: LCP 59: 508039 62: INPE 64: <1988> 68: RPQ 76: COMBUSTAO 87: cat lise 87: prepara‡Æo de catalisadores 87: alumina 91: 8808 MFN: 5805 1: SID/SCD 2: 4641 3: INPE-4641-PRE/1352 4: ETES 5: MP 6: m 16: Mantelli, M rcia Barbosa Henrique 16: Pilchowski, Hans-Ulrich 18: thermal contact conductance - a comparison of methods 20: 15 58: DMC 59: 506303 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: thermal resistance 88: contacts 88: physical 88: mathematical models 91: 8812 MFN: 5809 1: SID/SCD 2: 4648 3: INPE-4648 4: ETES 5: MP 6: m 16: SOUZA,J.P.M. 18: PROJETO DE SOFTWARE PARA UM CENTRO DE MISSAO DE COLETA DE DADOS 20: 130 58: DMC 59: 882062 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ 91: 8808 MFN: 5810 1: SID/SCD 2: 4649 3: INPE-4649-RPE/572 4: ETES 5: MP 6: m 16: Guedes, Jarbas Antonio 18: A aplica‡Æo do refinamento hier rquico adaptativo em sua modalidade p, na resolu‡Æo, atrav‚s do m‚todo dos elementos finitos, de problemas da teoria da elasticidade bidimensional 19: The application of the hierarchical adaptive refinement, in p-version, on the resolution, through the finite element method for problems of bidimensional elasticity theory 20: 130 58: DMC 59: 506222 62: INPE 64: <1988> 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: ELASTIC PROPERTIES 88: ERROR ANALYSIS 88: FINITE ELEMENT 88: METHOD HIERARCHIES 88: BANACH SPACE 88: HILBERT SPACE 88: ITERATIVE SOLUTION 83: The hierarchical adaptative refinement technique of the finite element method, in p-version, applied to bidimensional elasticity theory is presented. Usual techniques to obtain error indicators and estimators are discussed and an alternative manner to deal with error indicators is presented 91: 8808 MFN: 5812 1: SID/SCD 2: 4657 3: INPE-4657-nti/288 4: ETES 5: MP 6: m 16: Trava Airoldi, Vladimir Jesus 16: Hinken, Jos‚ Nivaldo 16: Corat, Evaldo Jos‚ 16: Oliveira Junior, Ismael Em¡lio de 18: Proposta de desenvolvimento de um subsistema propulsivo para o sat‚lite de sensoriamento remoto da MECB 20: 76 42: 58: DMC 59: 508039 64: <1988> 68: NTC 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: micropropulsor 87: eletrov lvula 87: hidrazina 91: 8808 MFN: 5813 1: sid/scd 2: 4658 3: INPE-4658-NTI/289 4: ETES 5: MP 6: m 16: Trava Airoldi, Vladimir Jesus 16: Corat, Evaldo Jos‚ 18: Plano de testes de aceita‡Æo da cƒmara de micropropulsÆo 20: 33 42: 58: DMC 59: 508039 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: NTC 76: ENGENAHRIA E TECNOLOGIA ESPACIAL 87: v cuo 87: propulsÆo 87: hidrazina 91: 8808 MFN: 5814 1: SID/SCD 2: 4659 3: INPE-4659 4: ETES 5: MC 6: am 10: Marshall, Paulo Melo 12: S-BAND TRANSPONDER AND TELECOMMAND DECODER DESIGN AND DEVELOPMENT FOR MECB SATELLITES 14: 19 53: JAPAN-BRASIL SYMPOSIUM ON SCIENCE AND TECHNOLOGY, 6 54: 10-12 Aug. <1998> 56: SÆo Jos‚ dos Campos 58: DMC 59: 506575 61: 64: <1988> 68: PRE 91: 8808 MFN: 5815 1: SID/SCD 2: 4662 3: INPE-4662 4: CEA 5: S 6: as 10: Botti, Luiz Claudio Lima 10: Abraham, Zulema 12: LONG-TERM VARIABILITY OF 3C273 AT 22 AND 44 GHZ 14: 465-469 30: Astrophysical Journal 31: 96 32: 2 58: CRAAE 59: RADIO 61: 64: Aug. <1988> 68: PRE 76: RADIASTRONOMIA 83: In this paper, we report observations of 3C 273 at 22 and 44 GHz during the past 7 yr. Between 1981 and 1984, the QSO was in a high-flux-density state at both frequencies, the intensity decreasing by a factor, of 2 during 1985, reaching a minimum value in April 1986. The changes in the flux density were larger, at 44 GHz and preceded the changes at 22 GHz. We identified the variability in 198 3 with the millimeter and infrared outburst of February 1983, and were able to correlate the observed flux-density fluctuations with the appearance of the superluminal knots observed at 10.7 GHz with VLBI techniques 91: 8808 MFN: 5816 1: SID/SCD 2: 4663 3: INPE-4663-282 4: FISPLASMA 5: MP 6: m 7: [07] 16: Shibata,C.S. 16: Leite Neto,J.P. 16: Montes,A. 18: Implementacao do codigo magint no sistema CDC-CYBER-170/750 20: 17 40: Pt 41: Pt 42: 58: LAP 62: INPE 64: ago. <1988> 66: Sao Jose dos Campos 67: BR 68: NTC 90: b 76: FISICA DE PLASMA 91: FDB19940606 92: FDB-MLR 101: D 110: 1 111: Carlos S. Shibata 112: LAP 120: I 113: 27.02.94 MFN: 5817 1: SID/SCD 2: 4664 3: INPE-4664-PRE/1365 4: FISMAT 5: MC 6: am 10: Fabbri, M. 10: Bandeira, I. N. 10: Miranda, L. C. M 12: Theoretical model for the solute distribution of a PbSnTe growth by VMS in microgravity environment 14: 7 53: Congress of The International Astronautical Federation 54: 8-15 Oct. <1988> 56: Bangalore 57: India 58: LAS 59: 62022X 61: 64: <1988> 68: PRE 76: MATERIALS PROCESSING 88: BRIDGMAN METHOD 88: LOW GRAVITY MANUFACTURING 88: TERNARY ALLOYS 88: VAPOR PHASES 88: FINITE DIFFERENCE THEORY MASS TRANSFER 88: MICROGRAVITY 88: SPACE COMMERCIALIZATION 83: The basic mechanism occurring in a diffusion-controlled growth of a Pb(1-x)Sn(x)Te crystal by the Vapor Melt Solid (VMS)technique is investigated. A physical model for the mass transfer by the vapor and liquid phases without parasitory convection is stated and solved with an accurate implicit moving-boundary finite-difference scheme. It is shown that growth by VMS in microgravity is expected to yield very good-quality PbSnTe crystals, due to a mechanical stabilization of the liquid layer and enhancement of the streaming effect in the vapor phase. More accurate results concerning Bridgman growth of PbSnTe in the diffusion-controlled regime were also obtained. These preliminary investigations are intended to support an experiment being devised in cooperation with the Laboratory of Materials Science in Space of the USSR Space Research Institute to grow a PbSnTe crystal at MIR facilities MFN: 5818 1: SID/SCD 2: 4665 3: INPE-4665-PRE 4: FISMAT 5: S 6: as 7: [07]534 10: Abramof, Eduardo 10: Ferreira, S.O. 10: Boschetti, Cesar 10: Bandeira, Iraja Newton 12: Characterization of Pb0.8Sn0.2Te films grown on KCL substrates by hot wall epitaxy 14: 637-644 30: Journal of Crystal Growth 31: 96: 40: En 41: En 42: 58: LAS 59: SENSORES DE RADIACAO 61: 64: <1989> 68: PRE 90: B 76: fISICA E TECNOLOGIA DE MATERIAIS 91: 8908 MFN: 5819 1: SID/SCD 2: 4666 3: INPE-4666-NTE/283 4: ETES 5: MP 6: m 16: DurÆo, Otavio Santos Cupertino 18: VisÆo por computador e o potencial de suas aplica‡äes no BRASIL 19: Computer vision and its potential applications in Brazil 20: 15 58: DMC 59: 20045X 62: INPE 64: <1987> 66: SÆo Jos‚ dos Campos 68: NTC 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: visÆo industrial 87: visÆo por computador 87: aplica‡äes 87: mercado 88: COMPUTER VISION 88: IMAGE PROCESSING 88: CAMERAS 88: COMPUTER GRAPHICS 88: PIXELS 83: The two most common types of artificial vision systems are explained. The identification of the potential applications for implementation in Brazil is presented MFN: 5820 1: SID/SCD 2: 4672 3: INPE-4672-RPI 4: ETES 5: MP 6: m 16: Vieira, Ricardo 18: Estudos preliminares para produ‡Æo laboratorial de tetroxido de nitrogˆnio 20: 19 42: 58: DMC 59: BIPROL 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: tetroxido de nitrogˆnio 87: propelente 87: oxidante 87:  cido n¡trico 91: 8808 MFN: 5821 1: sid/scd 2: 4675 3: INPE-4675-NTC/384 4: ETES 5: PM 6: M 7: 681 16: Martins, Eliane 16: Ambrosio, Ana Maria 16: Oshiro, Sergio Katsumi 18: SOPMCR - UM SISTEMA OPERACIONAL PARA O MULTIPROCESSADOR DE COMUNICACAO EM REDES 19: SOPMCR: An operating system for the multiprocessor for communication networks 20: 141 58: DSS 59: 20210X 64: <1988> 68: NTC 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: COMMUNICATION NETWORKS 88: DISTRIBUTED PROCESSING 88: MULTIPROCESSING (COMPUTERS) 88: INTERPROCESSOR COMMUNICATION 88: PACKET SWITCHING 83: This work presents a distributed system developed at INPE, designed for the ultiprocessor for Network Communications (MCR). The system supports execution of application processes by request from other processes or external events. These processes communicate with each other by asynchronously exchanging messages; the use of a logical entity called channel permits the interprocess communications, independently of where the processes are being executed. The MCR was designed to be part of a packet-switching communications subnetwork node, among other applications; therefore the system must support the implementation of the lower layers of a communications protocol (layers 2 and 3 in the ISO/OSI architecture) 91: 8808 MFN: 5822 1: SID/SCD 2: 4677 3: INPE-4677-PRE/ 4: FISMAT 5: S 6: as 7: [07]621 10: Beloto, Antonio Fernando 10: Veissid, Nelson 10: Nubile, Paulo 10: Andrade, A.M. 10: Pereira, I 12: Desenvolvimento de celulas solares de silicio monocristalino por implantacao ionica 14: 21 30: Revista BrasileirA F¡sica Instrumentacao 31: 4 32: 1 40: En 41: En 42: 58: LAS 61: 64: <1989> 68: PRE 90: b 76: FISICA E TECNOLOGIA DE MATERIAIS 87: CELULAS SOLARES 91: FDB-19950711 92: FDB-MLR MFN: 5823 54: 1-2 de set. <1988> 56: Sao Jose dos Campos 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D 1: SID/SCD 2: 4681 3: INPE-4681-PRE/1376 4: COMP 5: MC 6: am 7: [07] 10: Oliveira, Carlos Alberto de 12: Sobre interfaces em linguagem natural 14: 17 40: Pt 41: Pt 41: En 42: 53: Workshop Brasileiro de Simulacao, 2 MFN: 5824 1: SID/SCD 2: 4682 3: INPE-4682-PRE/1377 4: COMP 5: MC 6: am 7: [07] 10: Olivo, Acioli A. 10: Rosenthal, Hugo 10: Fabro, Osvaldo J.D 12: Implementacao de um modelo de programacao inteira mista para o problema de localizacao de armazens 14: 11 40: Pt 41: Pt 41: En 42: 53: ENEGEP-Encontro Nacional de Engenharia de Producao, 7 54: 6-9 set. <1988> 56: Sao Carlos 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5825 1: SID/SCD 2: 4683 3: INPE-4683-PRE/1378 4: ETES 5: MC 6: am 10: Fleury, Agenor de Toledo 10: Souza, Petr“nio Noronha 12: The role of Precision Mechanics in a satellite program: INPE's experienceERIENCE 14: 18 53: Japan-Brasil Symposium on Science and Technology, 6 54: 10-12 Aug. <1988> 56: SÆo Jos‚ dos Campos 58: DMC 59: 508500 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: BRAZILIAN SPACE PROGRAM 88: ORBITAL MECHANICS 88: PRECISION SATELLIT 88: ATTITUDE CONTROL 88: SATELLITE DESIGN 88: DATA COLLECTION PLATFORMS 88: METEOROLOGICAL SATELLITES 88: REACTION WHEELS 88: SPACE MISSIONS 83: Some aspects concerning the design and the construction of precision mechanisms are described for use in the satellites of the Brazilian Complete Space Mission (MECB)and in the Institute of Space Research's (INPE's)future satellite programs. This is done through an explanation of MECB missions, in order to introduce the systems where precision mechanics is a necessity followed by a discussion about the most representative precision equipment in development at INPE. A prospective view of the need of precision mechanics to attend to all areas involved in satellite programs is presented in the sequence. Finally, some actions to implement a precision engineering program as a support to the Brazilian Space Missions are proposed and discussed 91: 8808 MFN: 5826 1: SID/SCD 2: 4684 3: INPE-4684-PRE/1379 4: COMP 5: MC 6: am 7: [07] 10: Olivo, Acioli A. 10: Kurkdjian, Maria de Lourdes Neves de Oliveira 12: Uma aplicacao de programacao inteira em microcomputadores: o planejamento de uma rede urbana de estabelecimentos de comercio varejista 14: 111-118 20: 8 21: v.1 40: Pt 41: Pt 41: En 42: 53: Simposio Brasileiro de Pesquisa Operacional, 21 54: 17-21 out. <1988> 56: Rio de Janeiro 57: BR 58: LAC 58: DSM 61: 64: <1988> 68: PRE 90: b 76: PLANEJAMENTO URBANO 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5829 1: SID/SCD 2: 4688 3: INPE-4688-NTE/285 4: ETES 5: MP 6: m 16: Ferreira, Luiz Danilo Damasceno 16: Cruz, Jose Jaime da 16: Carrara, Valdemir 18: Reorienta‡Æo do eixo de rota‡Æo do sat‚lite scd2 e estudos de visibilidade 19: SCD2 satellite spin axis reorientation and feasibility study 20: 34 58: DMC 59: SATELITE DE COLETA DE DADOS 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: NTC 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: manobras 87: decaimento da velocidade 87: visibilidade 88: ATTITUDE CONTROL 88: ERROR ANALYSIS 88: SATELLITE ORIENTATION 88: SPIN STABILIZATION 88: BRAZILIAN SPACE PROGRAM 88: GEODESY 83: The feasibility studies of spin axis reorientation and stabilization of the Data Collecting Satellite 2 (SCD2)are presented. Also contained are analyses of the spin rate decay and simultaneous visibility among Cuiaba (tracking station)/SCD2/PCD's (Data Collecting Platforms) MFN: 5832 1: SID/SCD 2: 4703 3: INPE-4703-RPE/577 4: ETES 5: MP 6: m 16: Hinckel, Jos‚ Nivaldo 18: Projeto de propulsor catal¡tico a hidrazina com empuxo de 2. ON 20: 24 58: DMC 59: MECANICA 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: propulsores 87: decomposi‡Æo catal¡tica 87: empuxo 87: estabilidade de opera‡Æo 91: 8809 MFN: 5833 1: SID/SCD 2: 4704 3: INPE-4704-TDL/343 4: FISPLASMA 5: T 6: m 16: FERREIRA,J.G. 18: CARACTERIZACAO DO PLASMA EM DESCARGAS MULTIDIPOLO MAGNETICAS 20: 233 50: Instituto de Pesquisas Espaciais 51: Mestre 58: LAP 58: SPG 59: 881031 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: TDI 91: 8809 MFN: 5835 1: SID/SCD 2: 4706 3: INPE-4706 4: FISMAT 5: S 6: as 10: KISHORE,R. 12: THE SOURCES OF PHOTOVOLTAGE IN SOLAR CELLS 30: JOURNAL OF APPLIED PHYSICS, 58: LAS 59: 602116 61: <1988> 68: PRE 91: 8809 MFN: 5836 1: SID/SCD 2: 4707 3: INPE-4707-PRE/1389 4: COMP 5: MC 6: am 7: [07] 10: Rodrigues, Valter 10: Simoni, Paulo O. 10: Oliveira, Pedro P.B. de 10: Nogueira, Carlos A. Marques 12: Towards a Knowledge-based system to assist the Brazilian operation 14: 15 40: En 41: En 42: 53: AISA'88 54: 15-16 Nov. <1988> 56: Huntsville 57: Alabama 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5837 1: SID/SCD 2: 4708 3: INPE-4708-PRE/1390 4: COMP 5: MC 6: am 7: [07] 10: Simoni, Paulo O. 10: Rodrigues, Valter 10: Oliveira, Pedro P.B. de 12: Using diferent sources of information in automated linear feature extraction from remote sensing data 14: 13 20: 530 40: En 41: En 42: 53: Simposio Brasileiro de Sensoriamento Remoto, 5 54: 11-15 out. <1988> 56: Natal 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5838 1: SID/SCD 2: 4709 3: INPE-4709-PRE/1391 4: COMP 5: MC 6: am 7: [07] 10: Simoni, Paulo O. 10: Rodrigues, Valter 10: Oliveira, Pedro P.B. de 12: Knowledge related aspects of lineation and lineament extraction 14: 16 40: En 41: En 42: 53: Simposio Brasileiro de Inteligencia Artificial, 5 54: 7-11 Nov. <1988> 56: Natal 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5839 1: SID/SCD 2: 4710 3: INPE-4710-RA/188 4: ETES 5: MP 6: m 16: Ghizoni, Cesar Celeste 16: Bellar, J.T.M 16: Brassan, C. 16: Boruszewski, 16: Cividanes, L.B.T. 16: Esteves, L.C. 16: Kinkel, Nivaldo 16: Ranvaud, R. 16: Ribeiro, Jos‚ Francisco 16: Tude, Eduardo Antonio Parada 18: Plano estrat‚gico de desenvolvimento de tecnologia espacial: i.  reas de atua‡Æo 20: 155 42: 58: ETE 58: LCP 58: DEA 58: DMC 59: 200115 62: inpe 64: <1988> 66: sÇO jOS DOS cAMPOS 68: RA 76: ENGNEHARIA E TECNOLOGIA ESPACIAL 87: rprograma estrat‚gico 91: 8810 MFN: 5841 1: SID/SCD 2: 4717 3: INPE-4717-PRE/1396 4: ETES 5: MC 6: am 10: Alves Filho, Jose Sergio R. 10: Owen, D. R. J. 10: OWEN,D.R.J. 12: Using transputers in finite elements calculations: A first approach 14: 31 53: OCCAM Users Group and Workshop on Parallel Programming of Transputer Based Machines, 7 54: 14-16 Sep. <1987> 56: Grenoble 57: FR 58: DMC 59: 506222 61: 64: <1987> 68: PRE 76: COMPUTER OPERATIONS AND HARDWARE 88: ARCHITECTURE (COMPUTERS) 88: FINITE ELEMENT METHOD 88: MIMD (COMPUTERS 88: PARALLEL PROCESSING (COMPUTERS) 88: COMPUTER PROGRAMMING 88: COMPUTER PROGRAMS 88: COMPUTER SYSTEMS DESIGN 88: COMPUTER SYSTEMS PERFORMANCE 88: RUN TIME (COMPUTERS) 88: TRANSPUTERS 83: The use of a transputer system for finite element calculations is considered. A parameter study of a processor farm scheme is undertaken and the results are used to develop program TRANSA1 for the explicit transient dynamics problem. Some results are presented showing that a transputer machine can be a fast desk-top solution for running FE programs 91: 8709 MFN: 5842 1: SID/SCD 2: 4719 3: INPE-4719 4: ETES 5: MP 6: m 16: GUSELLA JR.,E. 16: IMOSSI,F.A.D.O. 16: GUEDES,J.A. 16: BIANCHI NETO,J. 16: REIS BUENO,L.A. 16: Milani, Paulo Giacomo 16: YAMAGUTI,W. 18: RELATORIO DA COMISSAO DE ESTUDOS SOBRE CAE 20: 42 58: DMC 58: DSS 59: 200115 64: <1988> 68: RPQ 91: 8810 MFN: 5844 1: SID/SCD 2: 4737 3: INPE-4737-PRE/1412 4: COMP 5: MC 6: am 7: [07] 10: Oliveira, Carlos Alberto de 12: O tratamento automatico de linguagem natural em processos de aquisicao de conhecimento 14: 19 40: Pt 41: Pt 41: En 42: 53: Simposio Brasileiro de Inteligencia Artificial, 5 54: 7-11 Nov. <1988> 56: Natal 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MD 101: D MFN: 5845 1: SID/SCD 2: 4738 3: INPE-4738-PRE/1413 4: COMP 5: MC 6: am 7: [07] 10: Gomes, Sonia M. 10: Trevino, Cesar 12: Simulacao numerica de modelo transiente de micro-propulsores a hidrazina 14: 10 40: Pt 41: Pt 41: En 42: 53: Encontro Nacional de Ciencias Termicas, 2 54: 6-8 dez. <1988> 56: Aguas de Lindoia 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5846 1: SID/SCD 2: 4739 3: INPE-4739-PRE/1414 4: COMP 5: MC 6: am 7: [07] 10: Nogueira, Carlos A. Marques 10: Rodrigues, Valter 12: Divisao heuristica de um ambiente em poligonos convexos para auxilio a navegacao de um robo movel 14: 14 40: Pt 41: Pt 41: En 42: 53: Simposio Brasileiro de Inteligencia Artificial, 5 54: 7-11 nov. <1988> 56: Natal 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 91: FDB-19930624 92: FDB-MDF 101: D MFN: 5848 1: SID/SCD 2: 4744 3: INPE-4744-PRE/1418 4: ETES 5: MC 6: am 10: Fonseca, Ijar Milagre da 12: Estudo do JITTER na atitude de um sat‚lite artificial com pain‚is flex¡veis estabilizados por rota‡Æo dual 13: Study of jitter on the attitude motion of a spin stabilized satellite with two flexible solar panels 14: 1010-1015 53: SBA Congresso Brasileiro de Automatica, 7 54: 15-19 ago. <1988> 56: SÆo jos‚ dos Campos 57: BR 58: DMC 59: CONTROLE E GUIAGEM 61: 64: <1988> 68: PRE 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: atitude 87: rota‡Æo dual 87: rotor 87: desalinhamentos 87: piin‚is solares 87: flexibilidades 88: ATTITUDE CONTROL 88: DUAL SPIN SPACECRAFT 88: FLEXIBILITY MATHEMATICAL 88: MODELS 88: SATELLITE ROTATION 88: SOLAR CELLS 88: SPIN STABILIZATION 88: VIBRATION 88: ALIGNMENT 88: DIFFERENTIAL EQUATIONS 88: NUMERICAL INTEGRATION 83: The jitter on the attitude motion of a spin stabilized satellite with two flexible solar panels is studied. The panels vibration displacements are discretized by the assumed modes method to obtain a model described by ordinary differential equations only. The Lagrangian formulation was used to derive the equations of motion. These equations were integrated numerically and the results, presented in graphical form, show the effects of the rotor misalignment and of the flexibility of the solar panels on the attitude motion. The results also show that the Jitter specification for the satellite under study is satisfied MFN: 5849 1: SID/SCD 2: 4747 3: INPE-4747-PRE/1420 4: FISPLASMA 5: MP 6: m 7: 533 16: FERREIRA,J.G. 16: FERREIRA,J.L. 16: LUDWIG,G.O. 16: MACIEL,H. 18: ESTUDO DA DESCARGA NA MAQUINA DE PLASMA QUISCENTE DO INPE 20: 5 58: LAP 59: 60111X 61: NRC 64: <1988> 68: RPQ 91: 8812 MFN: 5850 1: SID/SCD 2: 4753 3: INPE-4753-PRE/1425 4: ETES 5: MC 6: am 10: Trivelato, Gilberto da Cunha 10: Souza, Marcelo Lopes de Oliveira e 12: Projeto de um controlador digital de torque de rodas de rea‡Æo usando modelos de referencia 13: Design of a digital model following controller of reaction wheel torques 14: 595-601 53: SBA Congresso Brasileiro de Automatica, 7 54: 15-19 ago. <1988> 56: SÆo Jos‚ dos Campos 57: BR 58: DMC 59: DINAMICA ORBITAL E CONTROLE 61: 64: <1988> 68: PRE 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 87: roda de rea‡Æo 87: controle digital 87: controle por modelo de referˆncia 87: tempo de discretiza‡Æo 88: ARTIFICIAL SATELLITES 88: ATTITUDE CONTROL 88: CONTROLLERS 88: MODELS 88: REACTION WHEE 88: TORQUE 88: WHEELS 88: DESIGN ANALYSI 88: SAMPLING 83: The design of a digital model following controller of reaction wheel torques (used in attitude control of artificial satellites)is presented. This controller is intended to reduce the effects of wheel disturbing torques, and wheel sensor noises on the wheel torque. The controller structure used, the criteria for choosing the wheel sampling time, the controller gain, the sensor quantization level, and the current quantization level is summarized while considering the wheel torque requirements. Finally, the digitally simulated system response to zero and step reference torques, and the corresponding hardware implemented responses are discussed. These tests show that such a controller reduces considerably those effects and satisfies those requirements, and the design criteria used are satisfactory MFN: 5852 1: SID/SCD 2: 4758 3: INPE-4758 4: FISPLASMA 5: T 6: m 7: [07] 16: Castro,J.J.B. 18: Geracao de feixe de eletrons em movimento ciclotronico e sua interacao com campos eletromagneticos em cavidades fracamente irregulares um estudo aplicado a elaboracao conceitual de um G 40: Pt 41: Pt 42: 50: Instituto Nacional de Pesquisas Espaciais 51: Doutor 58: LAP 62: INPE 64: dez. <1988> 66: Sao jose dos Campos 67: BR 68: TDI 90: b 76: FISICA DE PLASMA 91: FDB_19940607 92: FDB-MLR 101: D 110: 1 111: Marcia Mores 112: LAP 120: I 113: 12.06.94 MFN: 5853 1: SID/SCD 2: 4760 3: INPE-4760-TDL/348 4: ETES 5: T 6: m 16: Lourencao, Paulo Tadeu de Mello 18: Otimiza‡Æo do posicionamento de sensores e atuadores visando … obten‡Æo de modelos reduzidos para s¡ntese de reguladores ¢timos em controle de estruturas flex¡veis 19: Optimization of sensors and actuators positioning aimed at obtaining reduced models for the synthesis of optimal control regulators of flexible structures 20: 127 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DMC 59: CMC 62: INPE 64: ago. <1988> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: dinƒmica de estruturas 87: redu‡Æo de modelos dinƒmicos 87: controle ¢timo 88: ACTUATORS CRITERIA 88: DYNAMIC CONTROL 88: FLEXIBLE BODIES 88: OPTIMAL CONTROL 88: OPTIMIZATION POSITIONING 88: EGULATORS 88: ACTIVE CONTROL 88: CONTROLLERS 88: EIGENVALUES 88: EIGENVECTORS 88: FEEDBACK CONTROL 88: MATRICES (MATHEMATICS) 83: Two approaches are presented which are proposed to obtain reduced order models for the active control of flexible structures, specifically considering the problem of positioning actuators and sensors. The first method consists in truncating the original model to the dominant modes only, the actuators and sensors placed according to a criterion that minimizes the spillover (interaction between controller and nondominant modes). In the second approach, the matrices of the reduced order model and the positions of actuators and sensors are determined to minimize the difference between the outputs of the original and reduced models. Based on these reduced models, two optimal controllers are synthesized assuming direct output feedback. These controllers are finally validated against the original model and their performances are compared: the closed-loop eigenvalues and eigenvectors, and limit values of a quadratic performance index 91: 8812 MFN: 5854 1: SID/SCD 2: 4772 3: INPE-4772-PRE/1441 4: ETES 5: MC 6: am 10: Martins Neto, Antonio Felix 12: Satellite attitude control analysis and design using linearizing transformationNS 13: Satellite attitude control analysis and design using linearizing transformations 14: 1005-1009 21: v.2 53: Congresso Brasileiro de Automatica, 7 54: <1988> 56: SÆo Jos‚ dos Campos 58: DMC 59: CONTROLE DE ATITUDE EM 3 EIXOS DE SATELITESS 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: PRE 76: SPACECRAFT DESIGN, TESTING AND PERFORMANCE 88: DESIGN ANALYSIS 88: LINEARIZATION 88: SATELLITE ATTITUDE 88: CONTROL TRANSFORMATIONS (MATHEMATICS) 88: ALGORITHMS 88: EULER EQUATIONS OF MOTION 88: QUATERNIONS 88: SPACECRAFT DESIGN 83: The problem of maneuvering a satellite relative to a desired noninertial reference is examined by using linearizing transformations and the concept of relative quaternion. The rigid body attitude equations are transformed into an equivalent linear form which considers the fact that the control purpose is to align the satellite with a moving reference frame (e.g., and Earth resource satellite). The equations so obtained are used to design control strategies for stabilizing the satellite attitude by linear techniques. This approach is more useful for algorithm design for on-board processors than the technique using inertial quaternion since the laws obtained are a function of the noninertial sensor outputs (sun sensors, earth sensors, etc.)and of the inertial sensor (gyroscopes)outputs MFN: 5855 1: SID/SCD 2: 4773 3: INPE-4773-PRE/1442 4: ETES 5: MC 6: am 10: Carrara, Valdemir 12: Launch window for the Brazilian Data Collecting Satellite 14: 6 53: Congress of the International Astronautical Federation, 39 (IAF) 54: 8-15 Oct. <1988> 56: Bangalore 57: India 58: DMC 59: DIOCON 61: 64: <1988> 68: PRE 76: LAUNCH VEHICLES AND SPACE VEHICLES 88: Brazilian Space Program 88: launch windows 88: preflight analysis 88: satellite attitude control 88: spacecraft launching 88: mathematical models 88: mission planning 88: space missions 83: The launch window studies establish a relatively significant phase in mission analysis of a given space program. The final result of such an analysis is the time interval of the day during some particular days of the year in which the spacecraft launch could be achieved. The main task is to identify and to formulate mathematically, the several constraints concerning the launch that restrain or modify the launch window. An overview is presented of the launch window studies made for the Data Collecting Satellite (DCS)of the Brazilian Space Program (MECB) MFN: 5856 1: SID/SCD 2: 4774 3: INPE-4774 4: ETES 5: MC 6: am 10: Gomes, Sebastiao Cicero Pinheiro 10: Kuga, Helio Koiti 12: Formulation of numerical orbit propagation and time error correction 38: (IAF PAPER 88-301) 53: IAF, International Astronautical Congress, 39 54: 8-15 Oct. <1988> 56: Bangalore 57: India 58: DMC 59: DINAMICA ORBITAL E CONTROLE 61: 64: <1988> 68: PRE 76: ASTRODYNAMICS 88: ERROR CORRECTING CODES 88: ORBIT CALCULATION 88: ORBIT PERTURBATION 88: TIME MEASUREMENT 88: COMPUTERIZED SIMULATION 88: DIFFERENTIAL EQUATIONS 88: EQUATIONS OF MOTION 88: TRANSFORMATIONS (MATHEMATICS) 83: This work reviews the several forms of numerical orbit propagation. Basically, they consist of formulating in different fashions the differential equations which represent the dynamics of orbital motion. Such formulations (time transformation, stabilization, regularization)are developed within a fictitious time frame which varies nonlinearly with the physical time. Thus, the physical time becomes a generalized coordinate of the system which should be obtained numerically and, as a consequence, with a certain inevitable numerical error. The nature of this time error is analyzed and a simple correction is proposed together with computer simulation results MFN: 5857 1: SID/SCD 2: 4775 3: INPE-4775 4: ETES 5: S 6: as 10: Rios Neto, Atair 10: Kondapalli, Ramanuja Rao 12: A stochastic approach to global error estimation in ode multistep numerical integration 14: 257-281 30: JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 31: 30 58: DMC 59: DINAMICA ORBITAL E CONTROLE (DIACON) 61: 64: <1988> 68: PRE 88: COVARIANCE 88: EARTH GRAVITATION 88: EPHEMERIDES 88: EQUATIONS OF MOTION 88: ERROR ANALYSIS 88: LOW EARTH ORBITS 88: MATHEMATICAL MODELS 88: ORBITAL POSITION ESTIMATION 88: BRAZILIAN SPACE PROGRAM 88: LOADS (FORCES) 88: MISSION PLANNING 83: The analysis and control of a low-orbit Earth-satellite mission needs reliable and reasonably good data of satellite ephemerides. But various types of force model errors affect the low-altitude artificial satellite ephemerides generated by long-term orbit propagation procedures. Predominant among them are the errors in modeling the terrestrial gravitational force. Treating the geopotential model error, one of the aims of this work is to extend the equations of motion and the orbit error covariance function, derived for circular orbits previously, to elliptical orbits, and to propose a methodology to be adopted for estimating orbit errors in the case of elliptical orbit propagations. The whole theory and mathematical development for elliptical orbits is explained here in detail. Considering the model errors caused by incorrect truncation of gravity field, the other aim of this work is to extend the stochastic procedure, developed previously to evaluate the order of magnitude of the accumulated global error in short-term circular orbit propagations, to long-term circular orbit propagations. Here, the statistical estimates of uncertainties in orbital elements are obtained in terms of their covariances. After testing the theory developed with some simple examples, it is applied to a satellite with the orbital configuration similar to that of the first Brazilian satellite, launched on 9th February 1993. The results obtained here have been analyzed in detail in order to check the validity of the theory developed. 91: 8812 MFN: 5859 1: SID/SCD 2: 4779 3: INPE-4779 4: ETES 5: MP 6: m 16: PACOLA SOBRINHO,L.C. 18: DETECAO, AQUISICAO E DEMODULACAO DE SINAIS EM SISTEMA DE COMUNICACAO COM ACESSO ALEATORIO 20: 136 58: 6009 59: 20000X 64: <1988> 68: RPQ 91: 8812 MFN: 5860 1: SID/SCD 2: 4780 3: INPE-4780 4: COMB 5: MP 6: m 16: Cunha, David dos Santos 16: Soares Neto, Tur¡bio Gomes 16: Cruz, Gilberto Marques 16: Freitas, Antonio Gon‡alves de 18: Prepara‡Æo e caracteriza‡Æo do catalizador R/Al2o3: lote 20/SJ/04 20: 11 58: LCP 59: 516414 64: <1988> 68: RPQ 76: COMBUSTAO 87: cat lise 88: ir/al2o3 88: ir¡dio 88: alumina 88: catalisadores 91: 8812 MFN: 5861 1: SID/SCD 2: 4781 3: INPE-4781-RA/189 4: FISPLASMA 5: MP 6: m 7: 533 16: Instituto de Pesquisas Espaciais. Laboratorio Associado de F¡sica de Plasma 18: RELATORIO DE ATIVIDADES DO LABORATORIO ASSOCIADO DE PLASMA DO ANO DE 1987 20: 131 58: LAP 59: 601101 61: NI 64: <1988> 68: RA 91: 8812 MFN: 5862 1: SID/SCD 2: 4783 3: INPE-4783 4: ETES 5: MP 6: m 16: Bergamoni, Eduardo W. 16: Lonneux, Leon 16: Esteves, L.C. 16: Hashioka, Mario H. 18: Options d'interconnexion pour la communication de donnees entre l'INPE et le CNES-phase intermediaire (INPE/ETE/ENCOMP ET DU CNES/CST/ESO) 20: 30 42: Options d'interconnexion pour la communication de donnees entre l'INPE et le CNES-phase intermediaire (INPE/ETE/ENCOMP ET DU CNES/CST/ESO) 58: DSS 58: DEA 59: 20210X 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: RTR 91: 8908 MFN: 5863 1: SID/SCD 2: 4784 3: INPE-4784-PRE 4: ETES 5: MC 6: am 10: Diehl, JoÆo Benedito 10: Trivelato, Gilberto da Cunha 10: Perez, Juan Su€e 12: Implementa‡Æo de um controlador digital de torque de uma roda de reacao com um computador incremental 14: 602-607 53: SBA Congresso Brasileiro de Automatica, 7 54: 15-19 ago. <1988> 56: SÆo Jos‚ dos Campos 58: DMC 59: CONTROLE E GUIAGEM 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: tempo real 87: sistemas digitais 87: controle digital 87: torque 87: roda de rea‡Æo 87: computador incremental 83: Este trabalho mostra uma aplica‡Æo, em tempo real, de computador digital incremental na realiza‡Æo de um controlador digital de torque de uma roda de rea‡Æo. Seus objetivos sÆo: i)avaliar o emprego de t‚cnicas de computa‡Æo incremental; ii)aplicar esta t‚cnica a um controlador em tempo real; iii)verificar o desempenho do controlador digital implementado. Inicialmente sÆo descritas: a arquitetura do computador, a estrutura de controle implementada e os parƒmetros utilizados no sistema considerado. A seguir sÆo apresentados os resultados experimentais obtidos com os testes realizados em laborat¢rio com o sistema de controle resultante. Estes resultados indicam que o computador e o algoritmo adotados atendem …s especifica‡äes do projeto do sistema de controle que foi constru¡do e testado. This paper presents a real-time application of a digital incremental computer in the realization of a digital torque controller of a reaction wheel. The objectives are: i)to evaluate the application of incremental computation techniques; ii)to apply this technique in real time controller; iii)to verify the performance of the implemented digital controller. Initially, description is given of: the computer architecture, the implemented structure of control and the parameters which were utilized in the system. Afterwards, experimental results obtained with tests made in laboratory with the resulting control system are presented. These results indicate that the computer and the adopted alghoritm comply with the specifications of the control system project which was built and tested MFN: 5864 1: SID/SCD 2: 4789 3: INPE-4789-RPE/583 4: FISPLASMA 5: PM 6: m 7: [07]533 16: Ueda, Mario 16: Rossi, J.O. 16: Aso, Y. 16: Mangueira, L. S. 16: Pereira, C. A 18: Construcao e caracterizacao de uma valvula para injecao rapida de gas 20: 28 40: Pt 41: Pt 42: 58: LAP 59: PLASMA MAGNETIZADO 64: ago. <1989> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: FISICA DE PLASMA 91: 8908 MFN: 5867 1: SID/SCD 2: 4793 3: INPE-4793-TDL/355 4: ETES 5: T 6: m 16: Fleury, C ssia de Assis 18: Estudo de otimiza‡Æo de parƒmetros referentes ao comportamento dinƒmico de pain‚is solares 20: 99 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: dez. <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHRIA E TECNOLOGIA ESPACIAL 87: otimiza‡Æo estrutural 87: paain‚is solares 87: m‚todo dos elementos finitos 91: 8901 MFN: 5868 1: sid/scd 2: 4794 3: INPE-4794 4: COMB 5: MP 6: m 16: Calegao, Isabel Cristina Coelho 16: GUIMARAES,A.L.S. 18: PROJETO E TESTES PARAMETRICOS DE UMA CELULA ELETROLITICA BIPOLAR PARA DESINFECCAO DE AGUA 20: 12 58: LCP 59: 200107 64: <1989> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTAO 91: 8908 MFN: 5869 1: SID/SCD 2: 4795 3: INPE-4795-PRE/1449 4: ETES 5: MC 6: am 10: Fleury, C ssia de Assis 10: Aranha, Jos‚ Agusto Penteado 10: Rios Neto, Atair 12: Otimiza‡Æo de parƒmetros referentes ao comportamento dinƒmico de pain‚is solares 14: 995-999 21: v.2 53: SBA Congresso Brasileiro de Automatica, 7 54: 15-19 ago. <1988> 56: SÆo Jos‚ dos Campos 58: DMC 59: SISTEMA DE CONTROLE DE ORBITA 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: minimiza‡Æo da massa 87: pain‚is solare 87: sat‚lites artificiais 87: otimiza‡Æo estrutural 87: discretiza‡Æo de lementos finitos 87: distribui‡Æo de massa 87: pinel solar 87: frequˆncia modal 83: O trabalho trata do problema de minimiza‡Æo da massa de pain‚is solares de sat‚lites artificiais sujeita aos v¡nculos de resistˆncia mecƒnica e de preserva‡Æo de n¡veis para a freqˆncia m¡nima do primeiro modo de vibra‡Æo, suficientemente elevados para que se possa evitar interferˆncia com o sistema de controle de atitude e ¢rbita do sat‚lite. Utilizando t‚cnicas de discretiza‡Æo do m‚todo dos elementos finitos, modela-se o problema como viga com engaste imperfeito eformula-se o problema de otimiza‡Æo como o de determina‡Æo da varia‡Æo da  rea da se‡Æo transversal, necess ria para a manuten‡ao da freqˆncia m¡nima imposta, em face dos v¡nculos geom‚tricos e mecƒnicos para um dado painel. 0 tratamento num‚rico da solu‡Æo ‚ feito usando o m‚todo da proje‡Æo do gradiente. 0 procedimento ‚ aplicado ao caso de um painel solar de dimensäes m‚dias, para o qual sÆo apresentados e analisados resultados de testes num‚ricos. This work presents a procedure for mass minimization of solar panels used in artificial satellite, considering mechanical strenght and first mode vibration frequency constraints. These constraints are used in order to avoid undesirable effects of the solar panels dynamics on the attitude and orbit control system. The solar panel is modelled as an imperfect cantilevered beam discretized by the Finite Element Method. For a given panel, the optimization problem is the achievement of the minimal cross section area a long the beam to maintain an imposed frequency, considering geometric and strenght constraints. A gradient projection method is used for numerical solution in a digital computer. This procedure is applied to a medium size satellite solar panel. Numerical results are presented and discussed MFN: 5870 1: SID/SCD 2: 4798 3: INPE-4798-NTE/287 4: ETES 5: MC 6: am 10: Souza, Luiz Carlos Gadelha de 12: Rede experimental de plataforma de coleta de dados e localiza‡Æo - descri‡Æo da rotina orbit 14: 29 53: Coloquio Brasileiro de Dinamica Orbital, 4 54: 21-24 nov. <1988> 56: Itatiaia 58: DMC 59: REDE EXPERIMENTAL DE PLATAFORMA COLETA DE DADOS E LOCALIZA€ÇO- ENGENHARIA 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: pcd 87: DISPERSåES E CONTATO 87: ATITUDE 87: SATLITES MFN: 5871 1: SID/SCD 2: 4801 3: INPE-4801-TDL/356 4: ETES 5: T 6: m 16: Cruz, Jos‚ Jaime da 18: Contribui‡Æo ao estudo da robustez da estabilidade de reguladores nÆo lineares multivariaveis 20: 213 50: Instiutto de Pesquisas Espaciais 51: Doutor 58: DMC 59: CMC 62: INPE 64: <1988> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: robustez da estabilidade 87: reguladores multivari veis 87: reguladores nÆo lineares MFN: 5872 1: SID/SCD 2: 4803 3: INPE-4803-PRE/1452 4: ETES 5: S 6: as 10: Ferreira, Luiz Danilo Damasceno 10: Cruz, Jos‚ Jaime da 12: Attitude and spin rate control of a spinning satellite using geomagnetic field 30: Journal of Guidance, Control and Dynamics 31: 14 32: 1 58: DMC 59: CONTROLE E GUIAGEM 61: 64: <1989> 68: PRE 91: 8908 MFN: 5873 1: SID/SCD 2: 4804 3: INPE-48O4 4: ETES 5: S 6: as 10: Souza, Marcelo Lopes de Oliveira e 12: Exactly solving the weighted time-fuel optimal control of an undamped harmonic oscillator 14: 488-494 30: Journal of Guidance, Control and Dynamics 31: 11 32: 6 58: DMC 59: CONTROLE E GUIAGEM 61: 62: INPE 64: Nov.-Dec.<1989> 66: SÆo Jos‚ dos Campos 68: PRE 91: 8901 MFN: 5875 1: sid/scd 2: 4816 3: INPE-4816-TDL/362 4: ETES 5: T 6: m 16: Diehl, JoÆo Benedito 18: L - uma linguagem para solu‡Æo incremental de sistemas em um ambiente de processamento paralelo 20: 121 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: dez. <1988> 66: SÆo Jos‚ dos Campos 68: TDI 76: ELETRâNICA E TELECOMUNICAOES 87: computa‡Æo incremental 87: processamento paralelo 87: linguagem 87: arquitetura mind 87: multiprocessamento 91: 8906 MFN: 5876 1: SID/SCD 2: 4818 3: INPE-4818-NTE/289 4: ETES 5: MP 6: m 16: Ferreira, Luiz Danilo Damasceno 16: Cruz, Jos‚ Jaime da 18: Attitude and spin rate control of a spinning satellite using geomagnetic field 20: 16 58: DMC 59: CONTROLE E GUIAGEM 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: NTC 76: ENGENHARIA TECNOLOGIA ESPACIAL 88: spinning satellites 88: spin rate control 88: attitude control 88: magnetic control 88: geomagnetic field MFN: 5878 1: SID/SCD 2: 4822 3: INPE-4822 4: COMB 5: MP 6: m 16: Cunha, Davis dos Santos 16: Cruz, Gilberto Marques de 18: DEFINICAO DE UM METODO DE LIMPEZA DE SUPERFICIE DE CATALIZADORES IR/AL203, COM ELEVADO TEOR DE METAL 20: 19 42: 58: LCP 59: 516414 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTAO 87: cat lise 87: Ir/AL2o3 87: prepara‡Æo de catalisadores 87: ir¡dio 87: alumina 91: 8908 MFN: 5879 1: SID/SCD 2: 4824 3: INPE-4824 4: ETES 5: MP 6: m 16: Ribeiro, Jos‚ Francisco 18: Um regulador linear - quadr tico - gaussiano para deslocamento angulares do eixo do rotor de um giro sintonizado resultados preliminares 20: 40 42: 58: DMC 62: inpe 64: <1989> 66: SÆo Jos‚ dos Campos 68: NTC 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: girosc¢pio 87: controle ¢timo 87: plataforma inercial 87: girosc¢pios sintonizados 91: 8908 MFN: 5880 1: SID/SCD 2: 4835 3: INPE-4835 4: COMB 5: MP 6: m 16: Rodrigues, Jos‚ Augusto Jorge 16: MOURE,G.T. 18: METODO DE PREPARACAO DE ALUMINAS BIOMODAIS UTILIZANDO POLIMEROS 20: 29 58: LCP 59: 508462 64: <1989> 68: RPQ 76: COMBUSTAO MFN: 5881 1: SID/SCD 2: 4841 3: INPE-4841 4: FISPLASMA 5: MC 6: am 10: FERREIRA,J.L. 10: LUDWIG,G.O. 10: FERREIRA,J.G. 10: MONTES,A. 12: ANOMALOUS PARTICLE DIFFUSION THROUGH A MAGNETIC PICKET FENCE 14: 311-325 18: Small plasma Physics Experiments II (Proceedings) 52: ICTP 53: Symposium on Small Scalle Laboratory Plasma Experiments 54: May 15 - 9 July <1989> 56: Trieste 57: IT 58: LAP 59: 60190X 61: 64: <1990> 68: PRE 91: 8908 MFN: 5882 1: SID/SCD 2: 4846 3: INPE-4846 4: MET 5: MC 6: am 7: 551 10: KATAOKA,H.C. 10: MOURA,A.D. 12: IMPACTO DA METEOROLOGIA NO SETOR AGRICOLA: COMPILACAO E ANALISE DE CASOS 14: 85 53: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA 54: 9-16 <1989> 56: Maceio 58: CPT 59: 924857 61: 64: <1989> 68: PRE 91: 8911 MFN: 5883 1: SID/SCD 2: 4852 3: INPE-4852-RPI/216 4: ETES 5: MP 6: m 16: GalvÆo, Francisco Leme 18: Relat¢rio preliminar da atividade de pesquisa REVFRI 20: 73 42: 58: DMC 59: REVFRI 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: RPI 87: revestimento para redu‡Æo do arrasto de fric‡Æo 87: intera‡äes g s-superf¡cie s¢lida 87: coeficiente de acomoda‡Æo 87: adsor‡Æo 87: arrasto de fric‡Æo 91: 8907 MFN: 5885 1: SID/SCD 2: 4854 3: INPE-4854 4: COMB 5: PM 6: m 16: Rodrigues, Jos‚ Augusto Jorge 16: Zacharias,M.A. 18: Controle mecƒnico de Suporte e catalisadores 20: 39 58: LCP 59: 508462 61: 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: NTC 76: COMBUSTAO 87: cat lise 87: catalisadores MFN: 5886 1: SID/SCD 2: 4857 3: INPE-4857-TDL 4: ETES 5: T 6: m 16: Padilha, Orlando Sanches 18: T‚cnicas de controle auto-sintonizavel impl¡cita e explicita, com estima‡Æo de parƒmetros via filtro de kalman, aplicadas a atitude de sat‚lites artificiais 20: 183 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 91: 8908 MFN: 5888 1: SID/SCD 2: 4859 3: INPE-4859-TDL/370 4: ETES 5: T 6: m 16: Ricci, M rio C‚sar 18: Mecanismos espaciais de baixa velocidade para acionamento de pain‚is solares: analise e projeto de um modelo experimental; dimensionamento de mancais 20: 184 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: mecanismos espaciais 87: acionamento de pain‚is 87: motores de passo 91: 8908 MFN: 5890 1: SID/SCD 2: 4862 3: INPE-4862-PRE/593 4: FISPLASMA 5: MP 6: m 16: UEDA,M. 16: MACHIDA,M. 16: DOI,X. 16: ARAMAKI,E.A. 16: HONDA,R.Y. 16: PORTO,P. 16: BERNI,L.A. 16: MACHIDA,M. 18: DIAGNOSTICOS DE PLASMA GERADO NO TOROIDE COMPACTO DA UNICAMP 20: 44 58: LAP 59: 601160 64: <1989> 68: RPQ 91: 8908 MFN: 5891 1: SID/SCD 2: 4864 3: INPE-4864-TDL/375 4: ETES 5: T 6: m 16: Carrara, Alcy Rodolfo dos Santos 18: Projeto preliminar de um posicionador para movimenta‡Æo de um simulador solar 20: 189 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: mecƒnica espacial 87: controle de atitude 87: ¢rbita 87: simula‡Æo em laborat¢rio de SCO 87: rob¢tica 87: modelo cinem ticos e dinƒmico MFN: 5892 1: SID/SCD 2: 4866 3: INPE-4866-TDL/377 4: ETES 5: T 6: m 7: 681 16: Guedes, Ulisses Thadeu Vieira 18: Procedimento de estima‡Æo de atitude para sat‚lites estabilizados por rota‡Æo 20: 120 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: filtro Kalman 87: estima‡Æo de coeficientes magn‚ticos 87: refinamento de atitude 87: mecƒnica orbital 91: 8908 MFN: 5893 1: SID/SCD 2: 4868 3: INPE-4868 4: ETES 5: MC 6: am 10: Bergamini, Eduardo Whitaker 12: CONFORMANCE TEST CONCEPTS FOR DATA ENTITIES BASED ON SFDV STRUCTURE E CONSTRUCTION RULES 14: 76 53: PLENARY WORKSHOP HELD AT GRUMMAN/PSC FACILITIES, 15 54: 8-12 May 56: Reston 57: USA 58: DSS 59: 20210X 64: <1989> 68: PRE MFN: 5894 1: SID/SCD 2: 4877 3: INPE-4877 4: CEA 5: MP 6: m 16: Santos, Elisete Rinke dos 16: GONZALEZ-B.,F. 18: RELATORIO DOS SENSORES DE PRESSAO-CIRCUITO COMANDO E ESPECIFICACOES 20: 41 58: DAS 59: 903647 64: <1989> 68: RTR 76: ASTROFÖSICA 91: 8908 MFN: 5895 1: sid/scd 2: 4881 3: INPE-4881 4: COMB 5: MP 6: m 16: Migueis, Carlos Eduardo Seraphico de Souza 18: DESENVOLVIMENTO INICIAL DO SISTEMA DE TESTE ESTATICO DE MOTORES A BIPROPELENTE LIQUIDO 20: 53 58: LCP 59: 203122 64: <1989> 68: RPQ 76: COMBUSTAO 91: 8908 MFN: 5896 1: SID/SCD 2: 4883 3: INPE-4883 4: CEA 5: MP 6: m 16: Santos, Elisete Rinke dos 16: GONZALEZ-B.,F. 16: ALMEIDA,L.C. 18: RELATORIO DO MICRO DE SUPERVISAO DA TELEMETRIA 20: 73 58: DAS 59: 903647 64: <1989> 68: RTR 76: ASTROFÖSICA 91: 8908 MFN: 5898 1: SID/SCD 2: 4885 3: INPE-4885-NTE/291 4: ETES 5: MP 6: m 16: Kataoka Filho, M rio 16: Soucy, Y. 18: Evaluation of the modal testing modent software with simulated data 20: 55 58: DMC 59: METODOS PARA NALISE ESTRUTURAL 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: NTC 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: modal analysis 88: modal testing 88: modent 5.0 91: 8908 MFN: 5901 1: SID/SCD 2: 4890 3: INPE-4890 4: CEA 5: MP 6: m 16: Correa, Ricardo Varela 16: RENO,N.B. 16: SANTOS,M.A. 18: METODOLOGIA PARA CALCULO DE INFLAGEM DE BALOES ESTRATOSFERICOS 20: 99 58: DAS 59: 903647 64: <1989> 68: RTR 76: ASTROFÖSICA 91: 8908 MFN: 5902 1: SID/SCD 2: 4893 3: INPE-4893 4: COMP 5: MC 6: am 10: SIMONI,P.O. 10: RODRIGUES,V. 10: OLIVEIRA,P.P.B. 12: A SYSTEM FOR ANALYSIS AND INTERPRETATION OF LINEAMENTS IN REMOTE SENSING IMAGES 14: 9 53: SCANDINAVIAN CONFERENCE OR IMAGE ANALYSIS 5 54: 19-22 June <1989> 56: Onu 57: Filandia 58: LAC 59: 60710X 61: 68: PRE 91: 8908 MFN: 5905 1: SID/SCD 2: 4914 3: INPE-4914-PRE 5: MC 6: am 7: 519 10: Marengoni, H.F. 10: Senne, Edson L.F. 10: Lorena, Luis Antonio N 12: Um algoritmo exato para o problema P-medidas 14: 6 53: Congresso da Sociedade Brasileira de Pesquisa Operacional 54: 18-20 out. <1989> 55: Fortaleza 56: BR 58: LAC 59: 926302 61: 64: <1989> 68: PRE 76: COMPUTACAO APLICADA 87: ALGORITMOS 91: 8910 MFN: 5907 1: SID/SCD 2: 4917 3: INPE-4917 4: COMP 5: MC 6: am 10: ACERBI,R. 10: SIMONI,P.O 10: CARDOSO,E. 12: AN INTELLIGENT INTERFACE FOR THE DESIGN OF OPTIMAL CONTROL SYSTEMS 14: 8 53: INTERNATIONAL CONFERENCE ON INDUSTRIAL AND ENGINEERING APPLICATIONS ON ARTIFICIAL INTELLIGENCE AND EXPERT SYSTEMS, 2 54: 6-9 June <1989> 56: Tullahoma 57: USA 58: LAC 59: 60710X 61: 64: <1989> 68: PRE 91: 8906 MFN: 5908 1: SID/SCD 2: 4919 3: INPE-4919-RPE/594 4: ETES 5: MP 6: m 16: Shaw, Thomas Leomil 18: Resistˆncia mecƒnica de laminados em materiais compostos 20: 43 42: 58: DMC 59: ESTRUTURA 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: materiais compostos 87: materiais laminados 87: resistˆncia de laminados 91: 8909 MFN: 5909 1: SID/SCD 2: 4924 3: INPE-4924 4: COMP 5: T 6: m 7: 519 16: Marengoni, H.F 18: Um algoritmo exato para problemas das P-medidas 20: 109 40: Pt 41: Pt 41: En 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 59: CAP 64: <1989> 68: TDI 76: COMPUTACAO APLICADA 87: ALGORITMOS 91: 8909 MFN: 5911 1: SID/SCD 2: 4926 3: INPE-4926 4: CEA 5: MP 6: m 16: Santos, Elisete Rinke dos 16: ESKELSEN,S.M. 18: CIRCUITO SENSOR DE PRESSAO 20: 57 58: DAS 59: 903647 64: <1989> 68: RTR 76: ASTROFÖSICA 91: 8909 MFN: 5912 1: SID/SCD 2: 4928 3: INPE-4928-RPE/595 4: ETES 5: MP 6: m 7: 621 16: Trava Airoldi, Vladimir Jesus 16: Corat, Evaldo Jos‚ 16: Oliveira Jr., Ismael Emilio 16: Hinckel, Jos‚ Nivaldo 18: Eletrovalvula mono est vel 19: Monostable electrovalve 20: 37 58: DMC 59: PROPULSAO 62: INPE 64: <1989> 66: SÆp Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: v lvula 87: hidrazina 87: micro-propulsÆo 88: CALCULUS 88: ENGINE DESIGN 88: MODELS 88: QUALIFICATIONS 88: SPACECRAFT PROPULSION 88: VALVES 88: ENGINE PARTS 88: HYDRAZINE ENGINES 88: ENGINE DESIGN 88: MODELS 88: QUALIFICATIONS 88: SPACECRAFT PROPULSIO 88: VALVES 88: ENGINE PARTS 88: HYDRAZINE ENGINES 88: ENGINE DESIGN 88: MODELS 88: QUALIFICATIONS 88: SPACECRAFT PROPULSIO 88: VALVES 88: ENGINE PARTS 88: HYDRAZINE ENGINES 83: The fundamental calculus, the design, the complete development of a laboratory model, and all necessities of tests to certify the complete and reliable functioning of a monostable electrovalve are presented. An analysis of the results, that made possible the knowledge of the necessary parameters for the design of a qualification model, is presented too 91: 8909 MFN: 5913 1: SID/SCD 2: 4929 3: INPE-4929-RPE/596 4: FISPLASMA 5: MP 6: m 7: [07] 16: Aso,Y. 16: Ferreira,J.G 16: Rossi,J.O 18: Electrical test of gyrotron coil 20: 38 40: En 41: En 42: 58: LAP 62: INPE 64: set. <1989> 66: Sao jose dos Campos 67: BR 68: RPQ 90: b 76: FISICA DE PLASMA 91: 8909 101: D 110: 1 111: Marcia Mores 112: LAP 120: I 113: 29.06.94 MFN: 5914 1: SID/SCD 2: 4933 3: INPE-4933 4: COMP 5: MC 6: am 7: 519 10: Lorena, Luiz Antonio Nogueira 12: A MONOTONE SURROGATE ALGORITHM FOR THE 0-1 MULTIKNAPSACK PROBLEM 14: 15 53: CONFERENCE ON SYSTEM MODELLING DATA OPTMIZATION,14., LEIPZIG, ALEMANHA OCIDENTAL, 3-7 JUL. 1989 54: 3-7 July <1989> 56: Leipzig 57: Alemanha 58: LAC 59: 605107 61: 64: <1989> 68: PRE 91: 8907 MFN: 5915 1: SID/SCD 2: 4934 3: INPE-4934-PRE 4: ETES 5: S 6: as 10: Mantelli, M rcia Barbosa Henrique 12: Medidas experimentais da emissividade efetiva de superisolantes multi-camadas constru¡dos com materiais nacionais 30: Revista Brasileira de Aplica‡äes de V cuo 31: 9 32: 1 53: CBRAVIC - CONGRESSO BRASILEIRO DE APLICACOES DE VACUO NA INDUSTRIA E CIENCIA,10. (CBRAVIC) 54: 24-26 jul. <1989> 56: SÆo Jos‚ dos Campos 58: DMC 59: MECANICA ESPACIAL 61: 64: <1989> 68: PRE 91: 8907 MFN: 5916 1: SID/SCD 2: 4937 3: INPE-4937 4: FISPLASMA 5: S 6: as 10: UEDA,M. 10: ASO,Y. 10: ROSAL,A.C. 10: PRADO,F. 10: GALVAO,R.M.O 12: DIAGNOSTICOS ELETRICOS, MAGNETICOS E ESPECTROSCOPICOS PARA DETERMINACAO E OTIMIZACAO DE PARAMETROS DE PLASMA NO DISPOSITIVO "CECI" 14: 5 30: Revista Brasileira de Aplica‡äes d ev cuo 31: 9 32: : 53: Congresso Brasileiro de Aplica‡äes de V cuo na Ind£stria e na Ciˆncia, 10 54: 24-26 Jul. <1989> 56: SÆo Jos‚ dos Campos 58: Lap 59: 601160 61: 68: PRE 91: 8907 MFN: 5917 1: SID/SCD 2: 4938 3: INPE-4938 4: FISPLASMA 5: S 6: as 10: FERREIRA,J.L. 10: FERREIRA,J.G. 10: DAMASIO,W.C. 12: ESTUDO EXPERIMENTAL DE FORMACAO DE IONS NEGATIVOS DE HIDROGENIO NA MAQUINA DE PLASMA QUIESCENTE DO INPE 30: Revista Brasileira de Aplica‡äes de V cuo 31: 9 32: : 53: Congresso Brasileiro de Aplica‡äes de V cuo na Ind£stria e na Ciˆncia, 10 54: 24-26 jul. <1989> 56: SÆo Jos‚ dos Campos 58: LAP 59: 60111X 61: 64: <1989> 68: PRE 91: 8907 MFN: 5918 1: SID/SCD 2: 4939 3: INPE-4939 4: FISPLASMA 5: S 6: as 7: 537 10: Nono, Maria do Carmo de Andrade 10: FERREIRA,J.L. 12: SISTEMA DE CARACTERIZACAO DE CATODOS TERMOEMISSORES DE ELETRONS 14: 4 30: REVISTA BRASILEIRA DE VACUO 31: 9 32: : 53: Congresso Brasileiro de Aplica‡äes de V cuo na Ind£stria, 10 54: 24-26 jul. <1989> 56: SÆo Jos‚ dos Campos 58: LAP 59: 601136 61: 68: PRE 91: 8907 MFN: 5921 1: SID/SCD 2: 4943 3: INPE-4943-RPQ 4: FISPLASMA 5: MP 6: m 16: FERREIRA,J.L. 16: FERREIRA,J.G. 16: SANDONATO,G.M. 16: DAMASIO,W.C. 16: MONTES,A. LUDWIG,G.O. 18: PROPOSTA DE ESTUDO EXPERIMENTAL DA DIFUSAO DE PARTICULAS EM PLASMA CONFINADO SUPERFICIALMENT POR CAMPOS MULTI-DIPOLO MAGNETICOS 20: 38 42: 58: LAP 59: 60111X 64: <1989> 68: RPQ 91: 8909 MFN: 5923 1: SID/SCD 2: 4947 3: INPE-4947 4: ETES 5: MP 6: m 16: RAO,P.N. 18: A PROPOSAL FOR MAINTENANCE AND MODIFICATION FOR OPERATIONAL SOFTWARE FILES/MODULES 20: 17 58: 6009 59: 200808 64: <1989> 68: NTC 91: 8909 MFN: 5925 1: SID/SCD 2: 4953 3: INPE-4953-RPE/602 4: FISPLASMA 5: MP 6: m 16: ROSSI,J.O. 16: SANTOS,C. 16: UEDA,M. 18: CONSTRUCAO DE UM MEDIDOR DE PRESSAO DE GAS COM ALTA RESOLUCAO TEMPORAL 20: 32 58: LAP 59: 601136 64: <1989> 68: RPQ 91: 8911 MFN: 5926 1: SID/SCD 2: 4955 3: INPE-4955 4: ETES 5: MP 6: m 16: RAO,P.N. 18: GENERAL PURPOSE APPLICATION SOFTWARE FOR A KEYBOARD/DISPLAY INTERFACE 20: 44 58: 6009 59: 200808 64: <1989> 68: RPQ 91: 8911 MFN: 5927 1: SCD/SID 2: 4957 3: INPE-4957 4: COMB 5: MP 6: m 16: Soares Neto, Turibio Gomes 16: Cunha, Davis dos Santos 16: Freitas, Antonio Gon‡alves de 16: Cruz, Gilberto Marques de 18: CLORETO DE RUTENIO: PREPARACAO E ANALISE 20: 18 58: LCP 59: 200107 64: <1989> 68: RPQ 76: COMBUSTAO 87: cat lise 91: 8911 MFN: 5928 1: SID/SCD 2: 4958 3: INPE-4958 4: FISPLASMA 5: PM 6: M 7: 533 16: BARROSO,J.J. 18: BEAM COLLECTOR AND OUPUT WINDOW FOR A 35 GHZ 100 KW GYROTRON 20: 26 58: LAP 59: 601136 64: <1989> 68: RPQ 91: 8911 MFN: 5929 1: SID/SCD 2: 4959 3: INPE-4959-TDL/388 4: ETES 5: T 6: m 16: Kuga, H‚lio Koiti 18: Determina‡Æo de ¢rbitas de sat‚lites artificiais terrestres atrav‚s de t‚cnicas de estima‡Æo combinadas a t‚cnicas de suaviza‡Æo de estado 20: 249 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: determina‡Æo de ¢rbita 87: filtro de Kalman 87: suaviza‡Æo de estado MFN: 5930 1: SID/SCD 2: 4960 3: INPE-4960-DTL/389 4: ETES 5: T 6: M 16: Lopes, Roberto Vieira da Fonseca 18: Estima‡Æo adaptativa de estado e analise da taxa de amostragem para sistemas dinƒmicos lineares invariantes no tempo 19: Adaptive state estimation and sampling rate analysis for invariant linear dynamic systems in time 20: 265 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: estima‡Æo adaptativa 87: taxa de amostragem 88: ADAPTIVE FILTERS 88: COVARIANCE 88: DATA SMOOTHING 88: LINEAR SYSTEMS 88: MATHEMATICAL MODELS 88: RANDOM NOISE 88: SAMPLING 88: SIGNAL PROCESSING 88: STATE ESTIMATION 88: FITTING 88: HEURISTIC METHODS 88: PIXELS 88: SCALARS 88: WHITE NOISE 83: The needs for adaptive techniques to overcome practical difficulties related to the state estimation theory is as old as the applications of the theory itself. An introductory review is presented for adaptive techniques and gives three contributions to this still up-to-date topic. The residue correlation method for noise statistics estimation is extended to cover the continuous signal processing case. A secondary process driven by the residue is defined in such a way that its sample covariance is a finite linear observation of those statistics. It becomes evident that the discrete model with sequential white noise is not consistent with a continuous sampling rate. Then the cross-validation method for fitting the data smoothing degree using the concept of pixel of the output signal which determines its resolution is extended to the continuous case. Results corresponding to different kinds of signals are analyzed and compared with the state smoothing ones. These theoretical studies give the heuristic motivation for the mesh method - the major contribution of this work. A parametric analysis of the scalar case shows that if the system noise is taken as white the discretization time step must not be greater than the signal resolution. In this case the residue sample covariances that results from processing distinct meshes is a linear observation of both the state and observation noise statistics. On this basis, the meshes method estimates such statistics as well as the ideal sampling rate. Results are presented for a simplified satellite attitude determination problem MFN: 5931 1: sid/scd 2: 4962 3: INPE-4962-TDL/391 4: ETES 5: T 6: m 16: Kondapalli, Ramanuja Rao 18: Avalia‡Æo da influencia de erros envolvidos na propaga‡Æo de ¢rbitas de sat‚lites artificiais 19: Evaluation of influences of errors involved in orbit propagation of artificial satellites 20: 276 50: Instituto de Pesquisas Espaciais 51: Doutor 58: SPG 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: sat‚lites artificiais 87: propaga‡Æo de ¢rbitas 87: processos estoc ticos 88: ARTIFICIAL SATELLITES 88: EPHEMERIDES 88: ERROR ANALYSIS 88: ORBITAL ELEMENTS PERTURBATION 88: STOCHASTIC 88: PROCESSES 88: TRUNCATION ERRORS 88: CIRCULAR ORBITS 88: DRAG 88: GEOPOTENTIA 88: LOW ALTITUDE 88: NUMERICAL INTEGRATION 83: The ephemerides of low-altitude artificial satellites generated by orbit propagation procedures of special perturbation methods are, in general, subject to various types of errors. The predominant among them are the errors due to the truncation of disturbing force models, as in the case of terrestrial gravitational force; the errors in force model parameters, as in the case of atmospheric drag force; and the errors in the numerical integration. Treating these principal errors, this work develops a stochastic procedure to evaluate the order of magnitude of the accumulated global error in propagating low-altitude circular and quase-circular orbits. In the case of numerical integration errors, the proposed procedure models the errors through the distribution of zero mean random variables belonging to stochastic sequences, which consider the influence of both local truncation and round-off errors. In the case of truncation of the geopotential function, the lunear estimation methods are combined with spectral representation of terrestrial gravitation, and the statistical estimates of uncertainties in orbital elements are deduced in terms of their covariances. In the theory developed for the case of atmospheric drag force, the drag parameters are considered to be stochastic quantities in order to have statistical estimates to uncertainties in orbital elements in terms of their covariances. The three theories developed are at first tested separately in various types of problems, comparing the estimated errors with the true errors in all the cases, and then are combined and successfully applied to a satellite with the orbital and structural configuration similar to that of the first Brazilian satellite 91: 8911 MFN: 5932 1: SID/SCD 2: 4963 3: INPE-4963-TDL/392 4: ETES 5: T 6: m 16: Ferreira, Leonardo de Olive 18: Formula‡Æo anal¡tica para o problema da intera‡Æo da dinƒmica de reentrada com efeitos de flexibilidade e vibra‡Æo em ve¡culos aeroespaciais 19: Analytical formulation for the interaction problem of dynamic reentry, and effects due to flexibility and vibration in an aerospace vehicle 20: 235 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: aanal¡tico 87: reentrada 87: vibra‡Æo 87: flexibilidade 87: ve¡culos aaerospaaciais 88: AEROSPACE VEHICLES 88: EQUATIONS OF MOTION 88: FLEXIBILITY 88: REENTRY EFFECTS 88: STRUCTURAL VIBRATION 88: LOADS (FORCES) 88: MATRICES (MATHEMATICS) 88: MOMENTUM SPACECRAFT TRAJECTORIES 88: VECTORS (MATHEMATICS) 83: The interaction between reentry dynamics and effects due to structural flexibility and vibrations in aerospace vehicles is studied. An attempt is made to establish a fairly general, comprehensive analytical formulation of the problem. In the sequence, the formulation is applied to a particular vehicle, along with a search for the conditions for an analytical solution 91: 8911 MFN: 5933 1: SID/SCD 2: 4966 3: INPE-4966 4: ETES 5: MC 6: am 7: 521 10: Kuga, H‚lio Koiti 10: Riuos Neto, Altair 10: Orlando, Valcir 12: UD filtering and smoothing applied to orbit determination 53: International Symposium on Space Dynamics 54: 6-10 Nov. <1989> 56: Toulouse 57: FR 58: DMC 59: DINAMICA ORBITAL E CONTROLE 61: 64: <1989> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: ADAPTIVE FILTERS 88: DIGITAL SIMULATION 88: FACTORIZATION 88: KALMAN FILTERS 88: ORBIT CALCULATION 88: ORBITS 88: POSTFLIGHT ANALYSIS 88: SMOOTHING TRAJECTORIES 88: COVARIANCE 88: DEGRADATION 88: DIVERGENCE 88: ESTIMATES ESTIMATING 88: NOISE INTENSITY 88: REAL TIME OPERATION 88: TRACKING STATIONS 83: The performance is described of filtering and smoothing techniques applied to orbit determination of earth satellites. A (forward pass)Kalman filter along with an adaptive procedure for estimating the dynamic noise level which prevents the divergence of estimates due to inaccurate modelling of the orbital motion is implemented in the UD factorization form. The backward smoother is a numerically efficient version of the Rauch-Tung-Striebel (RTS)smoother. This smoother, developed in the UD form, has proven to be economical, compact and competitive for computer implementation. Digital simulations are performed for 2 situations of orbit determination: short arc orbit determination with favorably tracking geometry; and long arc orbit determination with existing tracking stations. Tests containing many levels of modelling degradation are carried out. The forward pass adaptive UD filter behaves so as to deal with these modelling nuisances and does not allow the divergence phenomenon to occur. In no real time operations, the backward UD smoother is used to improve the accuracy of the estimates and of the covariances resulting from the filtering phase. The results show, in the main, that the UD smoother can enhance the accuracy of the forward pass filter, sometimes by an order of magnitude. For post-flight analysis, the UD smoother is a useful tool when one aims at reconstituting the entire trajectory of the orbital motion covered by the tracking data. 91: 8911 MFN: 5934 1: SID/SCD 2: 4971 3: INPE-4971 4: ETES 5: MP 6: m 16: MATOS,J.D. 16: SELINGARDI,M.L. 18: RELATORIO DAS MEDIDAS OPTO-ELETRICAS DURANTE OS TESTES DE QUALIFICACAO DOS FOTODIODOS PARA OS SENSORES SOLARES DA MECB-SCD 20: 21 58: DEA 59: 200808 64: <1989> 68: RPQ MFN: 5935 1: SID/SCD 2: 4973 3: INPE-4973-RPE/605 4: FISPLASMA 5: MP 6: m 16: SANDONATO,G.M. 16: MONTES FILHO,A. 16: LUDWIG,G.O. 16: FERREIRA,J.L. 16: FERREIRA,J.G. 18: ESTUDO DA VIABILIDADE DE TESTES DE UM MICROPROPULSOR IONICO EM SATELITES DA MECB 58: LAP 59: 601144 64: <1989> 68: RPQ 91: 8911 MFN: 5936 1: SID/SCD 2: 4980 3: INPE-4980-RPE/606 4: FISPLASMA 5: MP 6: m 16: SANDONATO,G.M. 16: MONTES FILHO,A. 16: LUDWIG,G.O. 16: FERREIRA,J.L. FERREIRA,J.G. 18: PROPOSTA DE EXPERIMENTO A BORDO DO SEGUNDO SATELITE DE COLETA DE DADOS-SCDS DA MECB 20: 5 58: LAP 59: 601144 61: NE 64: <1989> 68: RPQ 91: 8911 MFN: 5937 1: SID/SCD 2: 4983 3: INPE-4983-PRE/1546 4: ETES 5: MC 6: am 10: Martins Neto, Antonio Felix 12: Controle nÆo-linear exato para sat‚lites usando rodas de rea‡Æo 13: Accurate nonlinear control for satellites using reaction wheels 14: 687-690 53: Latin American Conference on Automation, 3 54: 7-11 Nov. <1988> 56: Vina del Mar 57: CH 58: DMC 59: DINAMICA ORBITAL E CONTORLE 61: 64: <1989> 68: PRE 76: engenharia e tecnologia espacial 87: algoritmos 87: rodas de rea‡Æo 87: manobras de orbital 87: estabiliza‡Æo 87: sensores solares 87: estrategias 88: ALGORITHMS 88: ATTITUDE (INCLINATION) 88: NONLINEARITY 88: REACTION WHEELS 88: spacecraft design 88: STABILIZATION 88: CENTRAL PROCESSING UNITS COORDINATES 88: GYROSCOPES 88: SOLAR SENSORS 88: STRATEGY 83: The problem of maneuvering a satellite relative to a desired noninertial reference by using interval reaction wheels is examined by the use of linearizing transformations and the concept of relative quaternion. The satellite dynamic equations are transformed into an equivalent linear from which considers the fact that the control purpose is to align the satellite with a moving reference frame (e.g., an earth resource satellite). The equations so obtained are used to design control strategies for stabilizing the satellite attitude by linear techniques. This approach is more useful in algorithm design for on-board autonomous processors than the technique using inertial quaternion since the laws obtained are function of the noninertial sensor (sun sensor, or earth sensors)outputs and of the inertial sensor (gyroscopes)outputs 91: 8911 MFN: 5938 1: SID/SCD 2: 4988 3: INPE-4988-PRE/1550 4: ETES 5: mc 6: am 10: Cardoso, Humberto Pontes 10: Garcia, Ezio Castejon 12: Simula‡Æo do ambiente espacial do sat‚lite SCD-1 por placas aquecedoras 13: Space environment simulation of the SCD-01 satellite through heating plates 14: 5 53: Brazilian Conference on Mechanical Engineering, 10 COBEM 54: 5-8 dec. <1989> 56: Rio de Janeiro 58: DMC 59: CONTROLE TERMICO 61: 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: placas aquecedoras 87: controle t‚rmico 87: teste v cuo t‚rmico 87: infra-vermelha 88: ARTIFICIAL SATELLITES 88: BRAZILIAN SPACE PROGRAM 88: HEATERS 88: PERFORMANCE TESTS 88: SPACE ENVIRONMENT 88: SIMULATION 88: TEMPERATURE CONTROL 88: INFRARED RADIATION 88: THERMAL VACUUM TESTS 83: The space simulation model was developed for the realization of thermal vacuum tests acceptance of the SCD-01 Brazilian satellite. The adopted method is based in the simulation by infrared heater plates. The results confirmed the technic suitability MFN: 5939 1: SID/SCD 2: 4989 3: INPE-4989-PRE/1551 4: ETES 5: MC 6: am 7: 629 10: Mantelli, M rcia Barbosa Henrique 10: Bastos, Jos‚ Edson 12: Detrmina‡Æo experimental da condutancia t‚rmica de juntas parafusadas encontradas en sat‚lite 13: Experimental determination of thermal conductance in bolted joint impact in satellites 14: 5 53: Brazilian Conference on Mechanical Engineering, 10 54: 4-8 Dez. <1989> 56: Rio de Janeiro 58: DMC 59: DIOCONS 61: 64: <1989> 68: PRE 76: SPACECRAFT DESIGN 76: TESTING AND PERFORMANCE 87: junta parafusada 87: condutƒncia 87: experimental 88: BOLTED JOINTS 88: FINITE DIFFERENCE THEORY 88: NUMERICAL ANALYSIS 88: PANELS 88: THERMAL CONDUCTIVITY 88: SATELLITE TEMPERATURE 88: TEMPERATURE CONTROL 88: TEMPERATURE DISTRIBUTION 83: The goal is to determine the thermal conductance of bolted joints between panels for the first Brazilian satellite. This is achieved by a comparison among experimental values, numerical values based on the finite difference method, and theoretical results. These joints were submitted to tests in a vacuum-thermal chamber of the laboratory of satellite thermal control subsystem development, at INPE 91: 8911 MFN: 5940 1: SID/SCD 2: 4991 3: INPE-4991 4: ETES 5: S 6: as 7: 629 10: Prado, Antonio Fernando Bertachini de Almeida 10: Rios Neto, Atair 12: Suboptimal and hybrid numerical solution schemes for orbit transfer manoeuvres 14: 82-88 30: Controle e Automa‡Æo (SBA) 31: 4 32: 2 38: Toulouse 40: Pt 41: Pt 42: 53: Space dynamics; Proceedings of the International Symposium 54: 6-10 Nov. <1989> 56: Toulouse 57: FR 58: DMC 59: DINAMICA ORBITAL E CONTROLE 61: 64: maio-jun. <1994> 68: PRE 88: fuel consumtion 88: Kepler laws 88: orbit calculation 88: orbital maneuvers 88: transfer orbits 88: optimal control 88: lagrange multipliers 88: maxium principle 83: The problem of spacecraft orbit transfer with minimum fuel consumption is considered in terms of selecting, implementing, and testing numerical optimal and suboptimal solutions. After a search in the literature and analysis of results available, two schemes of solution to the problem were selected. In the first one, the associated optimal control problem is numerically treated by using a direct search approach together with suboptimal parameterized control. In the second one, a hybrid approach is used where the determination of the initial values of Lagrange multipliers (to solve the equations given by the maximum principle)is transformed in a direct search problem. In both schemes, the numerical solution of the problem in each iteration is reduced to one of nonlinear programming, which is then solved with the gradient projection method. The spacecraft is supposed to be in Keplerian motion controlled by the thrusters that are assumed to be of fixed magnitude (either low or high)and operating in an on-off mode. RESUMO: espacial com m¡nimo consumo de combust¡vel, em termos de sele‡Æo, implementa‡Æo e testes num‚ricos das solu‡äes escolhidas. O principal objetivo ‚ obter as leis de controle para as manobras necess rias ao Sat‚lite Brasileiro de Sensoriamento Remoto. Depois de uma pesquisa bibliogr fica e an lise dos trabalhos dispon¡veis, foram selecionados dois m‚todos de solu‡Æo do problema. No primeiro, o problema de controle ¢timo associado ‚ tratado numericamente atrav‚s de um m‚todo de busca direta combinado com controle, sub-¢timo parametrizado. No segundo, o m‚todo h¡brido ‚ usado e a determina‡Æo dos valores iniciais dos multiplicadores de Lagrange (necess rias na resolu‡Æo das equa‡äes dadas pelas condi‡äes necess rias de primeira ordem para um m¡nimo local)‚ transformada num problema de busca direta. Nos dois m‚todos, a solu‡Æo num‚rica em cada itera‡Æo ‚ reduzida a um problema de programa‡Æo nÆo-linear, que ‚ resolvida pelo m‚todo da proje‡Æo do gradiente. 0 ve¡culo espacial ‚ considerado em `movimento Kepleriano controlado apenas pelo empuxo, que ‚ assumido de magnitude constante (alta ou baixa)e operando em modo liga-desliga. Resultados de simula‡äes num‚ricas sÆo apresentados MFN: 5941 1: SID/SCD 2: 4997 3: INPE-4997-PRE/1559 4: FISPLASMA 5: S 6: as 10: SANDONATO,G.M. 12: PROJETO CONCEITUAL DE UMA CAMARA DE VACUO PARA O DESENVOLVIMENTO DE PROPULSORES IONICOS EM SIMULACAO DE AMBIENTE ESPACIAL 30: Revista Brasileira de Aplica‡äes 31: 9 32: : 53: CBRAVIC, 10 54: 24-26 jul. <1989> 56: SÆo Jos‚ dos Campos 58: LAP 59: 601144 61: 64: <1989> 68: PRE 91: 8912 MFN: 5942 1: SID/SCD 2: 4998 3: INPE-4998-PRE/1560 4: ETES 5: S 6: as 10: Kuga, H‚lio Koiti 12: New computationally efficient formula for backward-pass fixed-interval smoother and its UD factorization algorithm 14: 331-332 30: IEE Proceedings-D Control Theory an Aplications 31: 136 32: 6 58: DMC 59: DIOCON 61: 64: Nov. <1989> 68: PRE 76: DINAMICA ORBITAL E CONTROLE 83: An alternative implantation for the calculation of the UD smoothed covariance which saves computational effort is shown 91: 8912 MFN: 5943 1: SID/SCD 2: 5003 3: INPE-5003-TDL/397 4: ETES 5: T 6: m 16: Prado, Antonio Fernando Bertachini de Almeida 18: An lise, sele‡Æo e implementa‡Æo de procedimentos que visem manobras ¢timas de sat‚lites artificiais 19: Analysis, selection, and implementation of procedures which approve optimal artificial satellite maneuvers 20: 246 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: Mecƒnica orbital 87: manobras espaciais 87: controle ¢timo 87: otimiza‡Æo 87: programa‡Æo nÆo-linear 87: aproxima‡Æo estoc stica 88: ARTIFICIAL SATELLITES 88: FUEL CONSUMPTION 88: ITERATION NONLINEAR 88: PROGRAMMING OPTIMAL CONTROL 88: SPACECRAFT MANEUVERS 88: LAGRANGE MULTIPLIERS 88: MAXIMUM PRINCIPLE 88: SPACECRAFT ORBITS 83: The problem of spacecraft orbit transfer with minimum fuel consumption is considered, in terms of selecting, implementing, and testing numerical optimal solutions. After a search in the literature and analysis of results available, two schemes of solution to the problem were selected which are considered to be satisfactory. In one of these schemes the associated optimal control problem is numerically treated by using a direct search approach together with suboptimal parameterized control. In the other, a hybrid approach is used where the determination of the initial value of Lagrange multipliers, to solve the equations given by the Maximum Principle, is transformed in a direct search problem. In both cases, the numerical solution of the problem in each iteration is reduced to one of nonlinear programming, which is then solved with a projection of the gradient method. With the results obtained, it was possible to suggest a new version which considers errors in constraints satisfaction 91: 8912 MFN: 5944 1: SID/SCD 2: 5005 3: INPE-5005 4: ETES 5: MC 6: am 10: Bergamini, Eduardo Whitaker 12: ON BOARD CROSS SUPPORT SCENARIOS 14: 54 53: REUNIAO PLENARIA DO CONSULTATIVO COMMITTEE FOR SPACE DATA SYSTEMS - CCSDS, OTTWA, CANADA, 24 SET. 04 OUT. 1989 54: 24 Set. - 4 Oct. <1989> 58: DSS 59: 20210X 61: 68: PRE 91: 8912 MFN: 5945 1: SID/SCD 2: 5007 3: INPE-5007 4: COMB 5: MP 6: m 16: Cunha, David dos Santos 16: Soares Neto, Tur¡bio Gomes 16: Freitas, Antonio Gon‡alves de 18: Procedimentos dos testes de avalia‡Æo de catalisadores de IR/AL2o3, preparados no lCP, em micropropulsor 20: 20 58: LCP 59: 508462 62: INPE 64: <1989> 66: SÆo Jos‚ dos Campos 68: RPQ 76: COMBUSTAO 87: cat lise 87: alumina 87: ir¡dio 87: catalisadores 87: hidrazina 91: 8912 MFN: 5953 1: SID/SCD 2: 5042 3: INPE-5042 4: FIMAT 5: MC 6: am 10: LEITE NETO,J.P. 10: SHIBATA,C.S. 10: MONTES,A. 12: IMPLEMENTACAO DO CODIGO MAGINT-MAGGRAF NO SISTEMA MICROVAX-3600 14: 62 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 41 54: 9-16 jul. <1989> 56: Fortaleza 58: LAS 59: 601160 61: 64: <1990> 68: PRE MFN: 6171 1: SID/SCD 2: 8850 3: INPE-8850-PRE/4567 4: CEA 5: MC 6: am 10: Clemesha, B.R 12: Basic research at INPE using rocket and satellite payloads 14: 103-120 21: v.3 Space Science and Technology and Plasma Physics 53: Japan-brazil Symposium on cience and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 57: BR 58: DAE 61: 64: <1988> 68: PRE 76: AERONOMIA 87: alta atmosfera 87: pesquisa 87: medi‡äes 87: sondagem por foguete 87: AMPS (cargas pagas emcarcadas em sat‚lite) 87: ionosf‚ricas 88: upper atmosphere 88: research 88: measurement 88: rocket sounding 88: AMPS (satellite payloads) 88: rocketborne experiments 88: ionospherics 83: The Institute for Space Research - INPE, in conjunction with the Institute of Space Activities - IAE, has recently started a series of experiments aimed at measuring upper atmospheric and ionospheric parameters by means of rocket-borne sensors. The scientific payloads, constructed by INPE, have been flown in the SONDA III rocket, developed by IAE. The SONDA III rocket, a two stage solid fuel vehicle, is capable of carrying a useful payload of about 70 Kg. to a height of 500 Km. Three experiments have been conducted so far. In the first experiment a high frequency capacitor probe, developed by the ionosphere group, measured electron density at heights up to 540 Km. In the second experiment, conducted in december 1985, the payload was equipped with two plasma probes and two airglow photometers. This experiment measured the vertical profiles of the 01 5577 A and 02 7619 A airglow emissions in addition to measuring the electron density and temperature profiles through an F-region ionospheric bubble. The third experiment, launched in October 1986, measured similar parameters except that different airglow lines were chosen. Three experiments, planned for 1989, include the measurement of ionospheric electric field electron density and temperature and the vertical profiles of six different airglow emissions. An experiment using a smaller rocket, the SONDA II, will measure an emission from which the mesospheric ozone profile can be derived. In the near future INPE plans to start a scientific satellite program, for which various satellites have been proposed. The first of these satellites is likely to be the SAGA satellite proposed by the Geophysics and Aeronomy Department, This satellite will include devices for measuring a range of upper atmospheric and ionospheric parameters, and will be aimed at improving our understanding of the equatorial upper atmosphere, ionosphere and magnetosphere, and of phenomena related to the South Atlantic Geomagnetic Anomaly 91: 8001 MFN: 6234 1: SID/SCD 2: 9081 3: INPE-9081-PRE/4757 4: MET 5: S 6: as 10: Kayano, Mary Toshie 10: Vadlamudi, Brahmananda Rao 10: Moura, Antonio Divino 12: The walker circulation and atmospheric water-vapor haracteristics over the Pacific for 2 contrasting years 14: 243-251 27: 30: International Journal of Climatology 31: 9 32: 3 40: En 41: En 42: 58: LMO 61: 64: June <1989> 68: PRE 91: 8411 MFN: 6326 1: SID/SCD 2: 7793 3: INPE-7793-PRE/3633 4: CEA 5: MC 6: am 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 12: Biomass burning in Amazonia: production of CO2 an C3 and its global impact 14: 276-285 18: Anais 40: En 41: En 42: 52: USP 53: Amazonia: Facts, Problems and Solutions 54: 31 July-2 Aug. <1989> 56: Sao Paulo 57: BR 58: AMZ 61: 64: <1989> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: QUEIMADAS 87: medi‡Æo 87: biomassa 87: concentra‡Æo 82: 83: Biomass burning in Amazonia is a regular ans systematic practice during the local dry season. Based on several years of measurements of atmospheric 03,CO, and CO2 in Amazonia, during dry and wet season period, it is shown that local modifications of the atmosphere have been underestimated, especially by the local population. The local contribution of biomass burning is such that O3 concentration in the dry season is about twice as large as compared to the wet season, whereas the CO an CO2 concentrations increase by as much as a factor of 4 to times the wet season value. On the other hand, contrary to current belief, our data indicate that the global effect of biomass burning in the topics has been largely overestimated, being actually two orders of magnitude less than values that have been cited in the literature for the last decade 91: FDB-19921208 92: FDB-MLR MFN: 6339 1: SID/SCD 2: 10004 3: INPE-10004-PRE/5562 4: MET 5: S 6: as 7: [07] 10: Franchito, Sergio Henrique 10: Vadlamudi, Brahmananda Rao 10: Servian, J 12: Atlantic sea surface temperature and rainfall over Brazil 14: 5-8 30: Tropical Ocean-Atmosphere Newsletter 32: 46 40: En 41: En 42: 58: DCT 61: 64: Sept. <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921218 92: FDB-MLR 101: D MFN: 6342 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Nobre, Carlos Afonso 12: Ainda sobre a Zona de Convergencia do Atlantico Sul: a importancia do Oceano Atlantico 14: 30-31 30: Climanalise 31: 3 32: 4 40: Pt 41: Pt 42: 58: CPT 61: 64: abr. <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921221 92: FDB-MLR 101: D MFN: 6343 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Fonseca, L.B. 10: Nobre, Carlos Afonso 12: Um modelo estatistico que relaciona os valores de cota e vazao 14: 32 30: Climanalise 31: 3 32: 9 40: Pt 41: Pt 42: 58: CPT 61: 64: set. <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921221 92: FDB-MLR 101: D MFN: 6344 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Nobre, Carlos Afonso 10: Shukla, J. 10: Sellers, P 12: Impactos climaticos do desmatamento da Amazonia 14: 44-54 30: Climanalise 31: 4 32: 9 40: Pt 41: Pt 42: 58: CPT 61: 64: set. <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921221 92: FDB-MLR 101: D MFN: 6345 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Cohen, Julia Clarinda Paiva 10: Nobre, Carlos Afonso 12: Aspectos climatologicos das linhas de instabilidade na Amazonia 14: 34-40 30: Climanalise 31: 4 32: 11 40: Pt 41: Pt 42: 58: CPT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921221 92: FDB-MLR 101: D MFN: 6351 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Pereira, Claudio Solano 10: Mascarenhas Jr., A.S. 10: Moura, Antonio Divino 12: Balanco de energia da camada de mistura superior oceanica: uma revisao 14: 233-245 30: Revista Brasileira de Meteorologia 31: 3 32: 2 40: Pt 41: Pt 42: 58: CPT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921229 92: FDB-MLR 101: D MFN: 6358 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Stech, Jose Luiz 10: Stevenson, Merritt Raymond 12: Caracteristicas Climatologicas sazonais das aguas Sudeste do Brasil 14: 117-130 18: Anais 20: 14 40: Pt 41: Pt 42: 53: Congresso Latinoamericano sobre Ciencias del Mar, 2 54: 17-21 ago. <1987> 56: Lima 57: Peru 58: DCT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6359 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Lorenzzetti, Joao Antonio 10: Stech, Jose Luiz 12: Modelagem da circulacao de inverno sobre a plataforma Continental da Costa Sudeste do Brasil atraves de um modelo barotropico em elementos finitos 14: 492-498 18: Anais 21: v.1 40: Pt 41: Pt 42: 53: Congresso Nacional de Matematica Aplicada e Computacional, 10 54: 21-25 set. <1987> 56: Gramado 57: RS 58: DCT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6360 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Pereira, Claudio Solano 12: Simulacao numerica da resposta de uma frente oceanica a uma forcante atmosferica de meso-escala 18: Anais 40: Pt 41: Pt 42: 53: Seminario sobre o Desenvolvimento de Modelos Matematicos de Simulacao das Condicoes Oceanograficas sobre a Plataforma Continental e Avaliacao de Necessidades de Instrumentos Cientificos e Equipamentos de fabricacao Nacional, IEAPM 54: jul. <1988> 56: Arraial do Cabo 58: CPT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6361 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Pereira, Claudio Solano 10: Mascarenhas Jr., A.S. 12: Numerical simulation of a response of an oceanic 18: Anais 40: En 41: En 42: 52: IOUSP 53: Workshop Brasil/EUA em Oceanografia Fisica, 2 54: set. <1989> 56: Sao Paulo 57: SP 58: CPT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6362 1: SID/SCD 2: 7569 3: INPE-7569-PRE/3421 4: MET 5: MC 6: am 7: [07] 10: Santos, Regina Celia dos 10: Foster, P.R.P. 10: Yelisetty, Viswanadham 12: Estimativa do fluxo de calor sensivel na Estacao Antartica Comandante Ferraz 14: 150-159 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Agrometeorologia, 6 54: 09-16 jul. <1989> 56: Maceio 57: BR 58: DCM 61: 64: <1989> 68: PRE 90: b 76: CIENCIAS METEOROLOGICAS 87: AGROMETEOROLOGIA 83: As regioes antarticas desempenham um papel importante no clima global. A determinacao dos varios fluxos em tais areas faz-se necessario. Resultados preliminares dos fluxos de calor sensivel (Q ) na estacao antartica brasileira, Comandante Ferraz (62 graus 05'08'' S, 58 graus 23'37'' W)foram obtidos usando conjunto de dados medidos de vento e temperatura para diferentes situacoes. Os resultados mostram que existe diminuicao de Q em dias nublados. Observa-se tambem que a variacao de Q dia a dia nao e sistematica 91: FDB-19930601 92: FDB-MD 101: D MFN: 6370 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Yelisetty, Viswanadham 10: Andre, Romisio Geraldo Baldicero 10: Sa, Leonardo Deane de Abreu 10: Silva Filho, Vicente de Paula 12: Componentes do balanco de radiacao acima da copa da Floresta Amazonica 14: 9.10.1-9.10.4 18: Anales 40: Pt 41: Pt 42: 53: Interamerican Meteorological Congress, 2 and Congrement V with CAM 54: 30 Nov.-04 Dec. <1987> 56: Buenos Aires 57: AR 58: DCT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6371 1: SID/SCD 2: 4631 3: INPE-4631-PRE/ 4: MET 5: MC 6: am 7: [07] 10: Yelisetty, Viswanadham 10: Silva Filho, Vicente de Paula 10: Sa, Leonardo Deane de Abreu 10: Manzi, Antonio Ocimar 10: Molion, Luiz Carlos Baldicero 10: Andre, Romisio G.B. 10: Nogueira, J.L.M. 12: Some results from Amazon Forest micrometeorological experiment 18: Anais 40: En 41: En 42: 53: International Conference on Tropical Micrometeorology and Air Pollution 54: Feb. <1988> 56: New Delhi 57: India 58: DCT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6372 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Santos, Regina Celia dos 10: Yelisetty, Viswanadham 10: Santos, Jesus Marden dos 12: Comportamento termico de um latossolo vermelho amarelo: fase terraco em periodos seco e umido 14: 66-68 18: Proceedings 21: v.3 40: Pt 41: Pt 42: 53: Congresso Interamericano de Meteorologia, 3; Congresso Mexicano de Meteorologia, 3 54: 14-18 nov. <1988> 56: Mexico 58: DCT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6373 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Santos, Regina Celia dos 10: Santos, Jesus Marden dos 10: Yelisetty, Viswanadham 12: Estimativa da difusividade termica em um latossolo vermelho amarelo: fase terraco em periodos seco e umido 14: 36-38 18: Proceedings 20: 3 21: v.3 40: En 41: En 42: 53: Congresso Interamericano de Meteorologia, 3; Congresso Mexicano de Meteorologia, 3 54: 14-18 nov. <1988> 56: Mexico 58: DCT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6375 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Uvo, Cintia Regina Bertacchi 10: Nobre, Carlos afonso 12: A Zona de Convergencia Internacional (ZCIT)e a precipitacao no norte do Nordeste do Brasil. Parte: a posicao da ZCIT no Atlantico Equatorial 14: 39-40 30: Climanalise 31: 4 32: 7 40: Pt 41: Pt 42: 58: CPT 61: 64: jul. <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930107 92: FDB-MLR 101: D MFN: 6377 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Yelisetty, Viswanadham 10: Gielow, Ralf 12: The advective regimes on the Amazon Forest Canopy 14: 208-211 20: 14 40: En 41: En 42: 53: International Conference on Southern Hemisphere Meteorology and Oceanography, 3 54: 11-17 Nov. <1989> 56: Buenos Aires 57: AR 58: DCT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930107 92: FDB-MLR 101: D MFN: 6409 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Molion, Luiz Carlos Baldicero 12: Transport and chemistry near the Equador (TRACE): a proposed field measurement projet 40: En 41: En 42: 53: Ad Hoc Working Group to Assess Scientific Oppoetunities for GTE Field Measurement Projects 54: Sept. <1987> 56: Virginia Beach 57: USA 58: DME 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930112 92: FDB-MLR 101: D MFN: 6410 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Prakki, Satyamurty 10: Pereira, Claudio Solano 10: Gan, Manoel Alonso 12: On the cyclonic vortices and low pressure centers over the South American Region 14: 65-68 40: En 41: En 42: 53: Palmen Memorial Symposium on Extratropical Cyclones 54: 29 Aug. - 02 Sept. 1988 56: Helsinki 57: FL 58: CPT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930112 92: FDB-MLR 101: D MFN: 6411 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Bonatti, Jose Paulo 10: Vadlamudi, Brahamananda Rao 12: Latent heating and non-linnear effects in the development of commaclouds 18: Proceedings 40: En 41: En 42: 53: International Conference on Southern Hemisphere Meteorology and Oceanography, 3 54: Nov. <1989> 56: Buenos Aires 57: AR 58: CPT 58: DCT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930112 100: FDB-MLR 101: D MFN: 6412 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Franchito, Sergio Henrique 10: Vadlamudi, Brahmananda Rao 12: Numerical experiments with a zonally symmetric aclimate model 14: 76-78 18: Proceedings 40: En 41: En 42: 53: International Conference on the Southern Hemisphere Meteorology and Oceanography, 3 54: 13-17 Nov. <1989> 56: Buenos Aires 57: AR 58: DCT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930112 100: FDB-MLR 101: D MFN: 6413 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Innocentini, Valdir 10: Nunes, Ana Maria Bueno 12: Moist slantuise convection 18: Proceedings 40: En 41: En 42: 53: International Conference on the Southern Hemisphere Meteorology and Oceanography, 3 54: 13-17 Nov. <1989> 56: Buenos Aires 57: AR 58: CPT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930112 100: FDB-MLR 101: D MFN: 6414 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Kayano, Mary Toshie 10: Kousky, Vernon Edgar 12: Southern Hemisphere blocking climatology 18: Proceedings 40: En 41: En 42: 53: International Conference on Southern Hemisphere Meteorology and Oceanography, 3 54: 13-17 Nov. <1989> 56: Buenos Aires 57: AR 58: CPT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930112 92: FDB-MLR 101: D MFN: 6438 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Innocentini, Valdir 12: Simulacao numericas de convenccao inclinada umida 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Meteorologia, 5 54: nov. <1988> 56: Salvador 57: BA 58: CPT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930113 92: FDB-MLR 101: D MFN: 6439 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Obregon, G.O. 10: Silva Dias, Pedro Leite da 10: Ferreira, Nelson de Jesus 12: Variabilidade intrasasonal da vorticidade nas vizinhacas da America do Sul no verao de 1979/1980 14: 264-268 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Meteorologia, 5 54: nov. <1988> 56: Salvador 57: BA 58: CPT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930113 92: FDB-MLR 101: D MFN: 6440 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Ferreira, Nelson de Jesus 10: Prakki, Satyamurty 10: Ferreira, Chan C.S 12: Analise dos disturbios ondulatorios de leste sobre o Oceano Atlantico Equatotrial Sul 14: 462-466 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Meteorologia, 5 54: nov. <1988> 56: Salvador 57: BA 58: CPT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930113 92: FDB-MLR 101: D MFN: 6461 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Shuttleworth, W.J. 10: Molion, Luiz Carlos Baldicero 10: et al 12: Studies of Amazon evaporation 14: 359 30: EOS, Transactions, American Geophysical Union 31: 69 32: 16 40: En 41: En 42: 58: DME 61: 62: INPE 64: <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930114 92: FDB-MD 101: D MFN: 6462 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Molion, Luiz Carlos Baldicero 10: Manzi, Antonio Ocimar 10: Sa, Leonardo Deane de Abreu 10: Yelisetty, Viswanadham 10: Silva, Filho, Vicente de Paula 10: Andre, Romisio Geraldo Bouhid 10: Volpe, C.A. 10: Almeida, A. 10: Marques Filho, A.D. 10: Cruz, R.S 12: Micrometeorological dynamics of a "terra firme" forest in Central Amazonia during GTE/ABLE-2B Mission 14: 320 30: EOS, Transactions, American Geophysical Union 31: 69 32: 16 40: En 41: En 42: 58: DME 61: 62: INPE 64: <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930114 92: FDB-MD 101: D MFN: 6463 1: SID/SCD 2: 10002 3: INPE-10002-PRE/5560 4: MET 5: S 6: as 7: [07] 10: Thorpe, A.J. 10: Hoskins, R.J. 10: Innocentini, Valdir 12: The parcel Method in a baroclinic atmosphere 14: 1274 30: Journal of the Atmospheric Sciences 31: 46 32: 9 40: En 41: En 42: 58: CPT 61: 62: INPE 64: <1989> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930114 92: FDB-MD 101: D MFN: 6467 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Yelisetty, Viswanadham 10: Molion, Luiz Carlos Baldicero 10: et al 12: Radiation and Energy balances for different campaigns of the Amazon Forest 14: 314 30: EOS, Transactions, American Geophysical Union 31: 69 32: 16 40: En 41: En 42: 53: Agu Springer Meeting 54: May 16-29 <1988> 56: Baltimore 57: USA 58: DME 61: 62: INPE 64: Abr. <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930114 92: FDB-MD 101: D MFN: 6477 1: SID/SCD 4: MET 5: S 6: as 7: [07] 10: Molion, Luiz Carlos Baldicero 12: A Amazonia e o clima do globo 30: Ciencia Hoje 40: Pt 41: Pt 42: 58: DME 61: 62: INPE 64: marco <1988> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930114 92: FDB-MD 101: D MFN: 6480 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Cavalcanti, Iracema Fonseca Albuquerque 12: Zona de Convergencia Intertropical e Linha de Cumulonimbus associada a brisa Maritima 18: Anais 40: Pt 41: Pt 42: 52: INPE 53: Coloquio - Conceitos de Dinamica aplicados a previsao do tempo no Brasil, 1 54: 1-9 jul. <1987> 56: Sao Jose dos Campos 57: BR 58: CPT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930113 92: FDB-MD 101: D MFN: 6481 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Kayano, Mary Toshie 10: Vadlamudi, Brahmananda Rao 12: Bloqueios atmosfericos 14: 25 18: Anais 40: Pt 41: Pt 42: 52: INPE 53: Coloquio - Conceitos de Dinamica aplicados a previsao de tempo no Brasil, 1 54: 1-9 jul. <1987> 56: Sao Jose dos Campos 57: BR 58: CPT 58: DCT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930113 92: FDB-MD 101: D MFN: 6482 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Silva Dias, M.A.F. 10: Ferreira, M.E. 10: Franchito, Sergio H. 10: Cavalcanti, Iracema Fonseca A 12: Sistemas de Mesoescala, previsao de tempo a curto prazo, previsao imediata e efeitos locais 18: Anais 40: Pt 41: Pt 42: 52: INPE 53: Coloquio - Conceitos de Dinamica aplicados a previsao de Tempo no Brasil, 1 54: jul. <1987> 56: Sao Jose dos Campos 57: BR 58: CPT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930113 92: FDB-MD 101: D MFN: 6483 1: SID/SCD 2: 7577 3: INPE-7577-PRE/3429 4: MET 5: MC 6: am 7: [07] 10: Vadlamudi, Brahmananda Rao 10: Franchito, Sergio H. 12: Sistemas tropicais: aspectos observados e teoricos 18: Anais 40: Pt 41: Pt 42: 52: INPE 53: Coloquio - Conceitos de Dinamicas aplicados a previsao de tempo no Brasil, 1 54: jul. <1987> 56: Sao Jose dos Campos 57: BR 58: CPT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930113 92: FDB-MD 101: D MFN: 6489 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Cavalcanti, Iracema Fonseca Albuquerque 12: Sistema sinoticos que afetam o NE do Brasil 40: Pt 41: Pt 42: 52: Universidade de Alagoas 53: Seminario de Meteorologia, 1 54: fev. <1987> 56: Maceio 57: BR 58: CPT 61: 64: <1987> 68: PRE 90: b 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6490 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Molion, Luiz Carlos Baldicero 12: Comentarios sobre guia de calculo para cheia de projeto de vetedores 40: Pt 41: Pt 42: 53: Reuniao da Eletrobras 54: set. <1987> 56: Rio de Janeiro 57: BR 58: DME 61: 64: <1987> 68: PRE 90: b 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6491 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Molion, Luiz Carlos Baldicero 12: El Nino e o clima do Sul do Brasil 18: Anais 40: Pt 41: Pt 42: 53: Encontro de Meteorologia da Regiao Sul, 2 54: nov. <1987> 56: Florianopolis 57: BR 58: DME 61: 64: <1987> 68: PRE 90: b 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6492 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Molion, Luiz Carlos 12: A Amazonia e o clima do globo terrestre 40: Pt 41: Pt 42: 53: Encontro de Tropicologia, 4 54: 25-26 nov. <1987> 56: Brasilia 57: BR 58: DME 61: 64: <1987> 68: PRE 90: b 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6493 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Molion, Luiz Carlos Baldicero et al 12: Influencia da circulacao atmosferica do Hemisferio Norte na precipitacao pluviometrica da Amazonia: um estudo de caso 40: Pt 41: Pt 42: 53: Simposio Brasileiro de Hidrologia e Recursos Hidricos, 7 54: 08-13 nov. <1987> 56: Salvador 57: BR 58: DME 61: 64: <1987> 68: PRE 90: b 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6494 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Molion, Luiz Carlos Baldicero 12: El Nino-ocilacao sul e o clima do Sul do Brasil 40: Pt 41: Pt 42: 53: Encontro de Meteorologia da Regiao Sul, 2 54: 26-29 out. <1987> 56: Florianopolis 57: BR 58: DME 61: 64: <1987> 68: PRE 90: b 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6495 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Franchito, Sergio Henrique 10: Vadlamudi, Brahmananda Rao 12: Um modelo simples para estudos climaticos 14: 54-58 40: Pt 41: Pt 42: 53: Simposio de Qualificacao em Geociencias, 3 54: <1988> 56: Rio Claro 57: BR 58: DCT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6496 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Gielow, Ralf 10: Kirmse, D.W. 10: Fahien, R.W. 12: Obtencao de perfis de temperatura por simulacao estocastica do transporte de calor em escoamento turbulento cisalhante anisotropico entre placas paralelas 14: 311-314 18: Anais 40: Pt 41: Pt 42: 53: Encontro Nacional de Ciencias Termicas, 9 54: 06-08 dez. <1988> 56: Sao Paulo 57: BR 58: DCT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6497 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Arai, Nelson 12: Estimativa de campos de vento 40: Pt 41: Pt 42: 53: Encontro de Usuarios de Satelites Ambientais, 2 54: set. <1989> 56: Sao Jose dos Campos 57: BR 58: DCT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930115 92: FDB-MLR 101: D MFN: 6507 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Stech, Jose Luiz 10: Rodrigues, Jose Carlos 10: Bonatti, Jose Paulo 10: Franchito, Sergio Henrique 10: Silva Dias, Pedro Leite da 12: Um modelo nao-linear de previsao de tempo usando diferentes limites 14: 928-933 18: Anais 21: v.2 40: En 41: En 42: 53: Congresso Nacionalo de Matematica Aplicada e Computacional, 10 54: 21-25 set. <1987> 56: Gramado 57: BR 58: DCT 58: CPT 61: 64: <1987> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930116 92: FDB-MLR 101: D MFN: 6508 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Gielow, Ralf 12: Geracao de um sinal aleatorio continuo normalmente distribuido 14: 386-388 40: En 41: En 42: 53: Congresso Nacional de Matematica Computacional, 11 54: 15-19 ago. <1988> 56: Ouro Preto 57: BR 58: DCT 61: 64: <1988> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930116 92: FDB-MLR 101: D MFN: 6509 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Yelisetty, Viswanadham 10: Silva Filho, Vicente de Paula 10: Manzi, Antonio Ocimar 10: Sa, Leonardo Deane de Abreu 12: Analysis of diabatic wind and temperature profiles over the Amazonian Forest 14: 281-288 21: (IAHS Publ. N.178) 40: Pt 41: Pt 42: 52: IAHS 53: IAHS Scientific Assembly, 3 54: 10-19 May <1989> 56: Baltimore 57: USA 58: DCT 61: 64: <1989> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930116 92: FDB-MLR 101: D MFN: 7211 1: SID/SCD 2: 5821 3: INPE-5821-PRE/1967 4: CEA 5: S 6: as 7: [07] 10: Gonzalez-Alarcon, Walter Demetrio 10: Gonzalez, Alicia Luisa Clua 10: Lee, L.C. 10: Tsurutani, B.T 12: Role of the lifetime of ring current particles on the solar wind-magnetosphere power transfer during the intense geomagnetic storm of 28 August 1978 14: 765-769 30: Planetary and Space Science 31: 38 32: 6 40: En 41: En 42: 53: Fall Annual AGU 54: <1989> 56: San francisco 58: DGE 61: 64: <1990> 68: PRE 90: b 76: GEOFISICA ESPACIAL 83: For the intense magnetic storm of 28 August 1978 it is shown that the power transfer from the solar wind to the magnetosphere is well represented by the expression obtained by Vasyliunas et al. (1982, Planet. Space Sci. 30, 359)from dimensional analysis, but this representation becomes improved when such an expression is modified by a factor due to an influence of the lifetime of ring current particles as suggested by Lee and Akasofu (1984, Planet. Space Sci. 32, 1423). During a steady state regime of the ring current evolution of this storm, our study suggests that the power transfer depends on the solar wind density, the transverse component of the IMF (with respect to the Sun-Earth line)and also, explicitly, on the time constant for ring current energy decay, but not on the solar wind speed 91: FDB-19960104 92: FDB-MLR MFN: 7390 1: SID/SCD 2: 6025 3: INPE-6025-PRE/2140 4: MET 5: MC 6: am 7: [07] 10: Yelisetty, Viswanadham 10: Sa, Leonardo Deane de Abreu 10: Silva Filho, Vicente de Paula 10: Manzi, Antonio Ocimar 12: Ratios of eddy transfer coefficients over the Amazon forest 14: 365-373 18: Proceedings 38: (IAHS-AISH Publ. n.167) 40: En 41: En 42: 53: Forest Hydrology and Watershed Manangement 54: Out. <1987> 56: Vancouver 58: DCM 61: 64: <1987> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: VAPO DE AGUA 87: TURBULENCIA ATMOSFERICA 82: 83: Simultaneous profile and eddy flux data gathered over the Amazon forest, Brazil, have been analyzed to find values of the nondimensional functions M,H,W and vertical eddy diffusivities KM,H,W (the subscripts M, H and W represent the parameters for momentum, heat and water vapour transfer, respectively). The ratios KH/KM and KH/KW are obtained from functions. The functions and ratios of eddy diffusivities are presented over a stability (Ri=Richardson number)range of -1.00.04. To account for the anomalies in K's, a brief discussion is presented based on turbulent transport processes 91: FDB-19961017 92: FDB-MLR MFN: 7398 1: SID/SCD 2: 6001 3: INPE-6001-PRE/2116 4: MET 5: S 6: as 7: [07] 10: Sa, Leonardo Deane de Abreu 10: Manzi, Antonio Ocimar 12: Energy flux partitioning over Amazon forest 14: 1-16 30: Theoretical and Applied Climatology 31: 39 32: 1 38: En 40: En 42: 58: DCM 61: 64: <1988> 68: PRE 90: b 76: CIENCIAS METEOROLOGICAS 87: METODOS AVANCADOS 87: ENERGIA 82: 83: The present study involved determination of the experimental energy receipt partitioning over the tropical Amazon forest. Diurnal variation of net radiation (Q*), sensible heat flux (Qh)and latent heat flux (Qe)es presented. The daytime Qe is in phase with and it is always an important term in the energy balance. The daily averaged Qe is 59 to 100 precent of the daily whereas is 5 to 28 percent at the Amazon forest site (2 degreu 57S, 59 degreus 57 W)for the sample periods. The results present evidence that Qe over the Amazon forest is greater than Q* in the afternoon hours. The role of sensible heat advection in maintaining large Qe over the forest surface is discussed Hourlly Bower ratio beta values for two campaigns of the Amazon forest micrometeorological experiment are presented. During daylight hours, the differences in beta are not significant, and exhibit a systematic pattern. The only time that the variation in Bowen ratio increased significantly was at sunrise and sunset when the thermal structure of the air was changing from a strong inversion to lapse and vice versa. The diurnal beta values changed from - 3.50 to 0,85. The mean houly beta calculated from values from 07.00 to 16.00h, varid from 0.05 to 0.85 91: FDB-19961017 92: FDB-MLR MFN: 7401 1: SID/SCD 2: 6024 3: INPE-6024-PRE/2139 4: MET 5: S 6: as 7: [07] 10: Forti, Maria Cristina 10: Moreira-Nordemann, Lycia Maria 12: Estudo da interacao chuva/particulado atmosferico em Sao Jose dos Campos 14: 583-590 30: Ciencia e Cultura 31: 41 32: 8 40: Pt 41: Pt 42: 58: DCM 61: 64: <1989> 68: PRE 90: b 76: CIENCIAS METEOROLOGICAS 87: GEOQUIMICA AMBIENTAL 87: CHUVA 87: AEROSOL 87: PARTICULADO 87: SOLUBILIZACAO 82: 83: Amostras de particulado atmosferico foram coletadas em Sao Jose dos Campos e submetidas a quatro tratamentos diferentes com a finalidade de verificar a solubilizacao dos ions em funcao da acidez. Nestas solucoes foram entao dosados sodio, calcio, potassio, magnesio, e cloreto. Os resultados foram discutidos em funcao dos teores ionicos determinados, da quantidade de material particulado total e da pluviometria do periodo de coleta. Tambem foram coletadas e analisadas amostras de agua de chuva, no mesmo local e durante o mesmo periodo de amostragem do material particulado. Os dados obtidos mostram a chuva como agente de precipitacao atmosferico, assim como de solubilizacao dos ions. No entanto, verificou-se que uma maior acidez da agua nao implica uma maior capacidade de solubilizacao dos ions analisados neste estudo 91: FDB-19962110 92: FDB-MLR MFN: 7402 1: SID/SCD 2: 6028 3: INPE-6028-PRE/2143 4: MET 5: S 6: as 7: [07] 10: Cohen, Julia Clarinda Paiva 10: Silva Dias, Maria assuncao Faus da 10: Nobre, Carlos Afonso 12: Aspectos climatologicos das linhas de instabilidade na Amazonia 14: 34-40 30: Climanalise 31: 4 32: 11 40: Pt 41: Pt 42: 58: CPT 61: 64: nov. <1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 83: Bandas longas e estreitas de nuvens convectivas formam-se na costa norte-nordeste da America do Sul desde a Guiana ate o Maranhao, no Brasil. Algumas destas bandas movem-se continente adentro como uma linha de instabilidade (LI), enquanto outras dissipam-se proximo a costa. A genese de formacao da LI na costa esta associada a circulacao de brisa maritima. LIs com atividade moderada e forte observadas de 1979 a 1986 foram analisadas a partir de imagens de satelites meteorologicos. A maxima frequencia das LIs ocorre entre abril e agosto. Do total de 268 LIs analisadas, somente 38 83: propagaram-se para o interior do continente. A velocidade media de propagacao das LIs e entre 12 e 16m/s. A maioria das LIs sao observads ao sul da Zona de Convergencia Intertropical no Atlantico (ZCITA). A dimensao horizontal media destes sistemas e 1400km de comprimento e 170 km de largura 91: FDB-19962110 92: FDB-MLR MFN: 7403 30: Climanalise 31: 4 32: 10 40: Pt 41: Pt 42: 58: CPTC 61: 64: out. <1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: ESTIAGEM 87: PRECIPITACAO 87: ESTACOES METEOROLOGICAS 83: Apresenta-se neste trabalho um estudo preliminar da estiagem ocorrida no sul do Rio Grande do Sul, no periodo de janeiro de 1988 a agosto de 1989. Foram analisados dados de precipitacao mensal de seis estacoes meteorologicas, etabelecendo uma relacao com os sistemas sinoticos que atuaram sobre a regiao estudada e com os fatores globais. Observou-se que a permanencia de uma crista; a confluencia da corrente de jato em altos niveis sobre a regiao e a ausencia de esteira quente ao norte contribuiram para a estiagem. O indice de Oscilacao Sul permaneceu positivo durante todo o periodo e as temperaturas na superficie do mar apresentaram na maioria dos meses anomalias negativas 91: FDB-19962110 92: FDB-MLR 1: SID/SCD 2: 6029 3: INPE-6029-PRE/2144 4: MET 5: S 6: as 7: [07] 10: Prakki, Satyamurty 10: Etchichury, Paulo Cesar 12: Seca de 1988/89 no Extremo sul do Brasil 14: 31-38 MFN: 7404 1: SID/SCD 2: 6030 3: INPE-6030-PRE/2145 4: MET 5: S 6: as 7: [07] 10: Nobre, Carlos Afonso 10: Skukla, J. 10: Sellers, P 12: Impactos climaticos do desmatamento da Amazonia 14: 44-55 30: Climanalise 31: 4 32: 9 40: Pt 41: Pt 42: 58: CPT 61: 64: set. <1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: MODELOS NUMERICOS 87: DESMATAMENTO 87: FLORESTA TROPICAL 82: 83: Utilozou-se um modelo numerico acoplado da atmosfera global e biosfera para avaliar os efeitos do desmatamento na Amazonia no clima global e regional. Encontrou-se que, quando a floresta tropical foi substituida por pastagem degradada no modelo, houve um significativo aumento na temperatura a superficie e uma substancial diminuicao na evapotranspiracao e precipitacao, alem de decrescimo no escoamento superficial (runoff). Houve tambem um aumento na duracao da estacao seca, o que podera ter serias implicacoes para o restabelecimento da floresta tropical nas areas desmatadas. Notou-se tambem algumas mudancas na circulcao global devido ao desmatamneto na Amazonia, especialmente sobre a America do Norte. Entretanto, a variabilidade climatica natural sobre as latitudes medias do Hemisferio Norte e batante pronunciada mesmo sem perturbacoes externas, de tal modo que se pode, atualmente, afirmar com confianca que tais mudancas advir do desmatamnto na Amazonia 91: FDB-19962110 92: FDB-MLR MFN: 7405 1: SID/SCD 2: 6031 3: INPE-6031-PRE/2146 4: MET 5: S 6: as 7: [07] 10: Rocha, Humberto Ribeiro da 10: Nobre, Carlos Afonso 10: Barros, Marcos Costa 12: Variabilidade natural de longo prazo no ciclo hidrologico da Amazonia 14: 36-42 30: Climanalise 31: 4 32: 12 40: Pt 41: Pt 42: 58: CPT 61: 64: dez. <1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: FLORESTAS TROPICAIS 87: CICLO HIDROLOGICO 87: CHUVA 87: ESTATISTICA 82: 83: A retirada das florestas tropicais nativas da Amazonia pode causar alteracoes no ciclo hidrologico, observaveis em variacoes do regime de chuvas e vazoes dos rios que compoem a bacia amazonica. Neste trabalho, procedeu-se a uma analise etatistica de tendencias em series temporais de precipitacao e vazao para alguns pontos da bacia no priodo dos anos 60 e 70. Observou-se tendencias crescentes nas series de vazao e precipitacao, que perduraram entre 10 e 15 anos. As tendencias de precipitacao e vazao foram qualitativamente semelhantes entre si, indicando que, provavelmente, tais tendencias ocorreram devido a causas naturais e nao devido a efeitos de alteracoes da cobertura vegetal 91: FDB-19962110 92: FDB-MLR MFN: 7406 1: SID/SCD 2: 6032 3: INPE-6032-PRE/2147 4: MET 5: S 6: as 7: [07] 10: Sansigolo, Clovis Angeli 12: Variabilidade interanual da estacao chuvosa em Sao Paulo 14: 40-43 30: Climanalise 31: 4 32: 9 40: Pt 41: Pt 42: 58: CPTC 61: 64: set. <1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: CHUVA 83: A variabilidade interanual da estacao chuvosa em Sao Paulo e analisada atraves dos 70 anos de registros para Piracicaba, no interior do estado e as distribuicoes de probabilidade acumuladas para as quantidades, datas de inicio e fim, duracao e diferentes sequencias de dias secos, sao apresentadas 91: FDB-19962110 92: FDB-MLR MFN: 7407 1: SID/SCD 2: 6033 3: INPE-6033-PRE/2148 4: MET 5: S 6: as 7: [07] 10: Uvo, Cintia Regina Bertacchi 10: Nobre, Carlos Afonso 12: A Zona de Convergencia Intertropical (ZCIT)e a precipitacao no norte do nordeste do Brasil. Parte II: a influencia dos ventos e TSM do Atlantico Tropical 14: 39-47 30: Climanalise 31: 4 32: 10 40: Pt 41: Pt 42: 58: CPT 61: 64: out.<1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: VENTO 87: CORRELACAO 87: ZCIT 82: 83: Esta e a segunda parte de um trabalho que visa estabelecer a influencia da posicao da Zona de Convergencia Intertropical (ZCIT)do Atlantico Tropical sobre a precipitacao da regiao norte do Nordeste brasileiro (NNE). Nesta fase procurou-se determinar relacoes entre a posicao da ZCIT e as tensoes de cisalhamento zonal (TX)e Meridional(TY)do vento a superficie e a temperatura da surpeficie do mar (TSM)no Atlantico Tropical. Observou-se que a posicao da ZCIT esta correlacionada a ty e a TSM em algumas regioes do Atlantico Tropical, nos primeiros meses do ano. Durante a estacao chuvosa do NNE (marco, abril e maio), a posicao da ZCIT esta correlacionada a tx,ty e TSM numa regiao que compreende grande parte do Atlantico Tropical Norte. Evidenciou-se ainda , que e a posicao da ZCIT nos meses de abril e maio que define a qualidade da estcao chuvosa no NNE 91: FDB-19962110 92: FDB-MLR MFN: 7409 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Agrometeorologia, 6 54: 09-16 jul. <1989> 56: Maceio 57: BR 58: DCM 61: 64: <1989> 68: PRE 90: b 76: CIENCIAS METEOROLOGICAS 87: AGROMETEOROLOGIA 87: PROJETO RADASP 87: AGRICULTURA 87: CANA-DE-ACUCAR 87: CHUVA 87: MONITORAMENTO 87: RADAR 82: 83: Um dos principais objetivos operacionais do Projeto RADASP (Radar em Sao Paulo)e a aplicacao das observacoes do radar de tempo nas praticas agricolas. Ja na primeira fase de operacoes do radar de Bauru - meados da decada de 70 - teve inicio tal aplicacao, enfocando a cultura da cana-de-acucar. Ao longo da utilizacao das observacoes de radar na area central do Estado foram sendo definidas as operacoes relativas a cultura da cana que podem ser beneficiadas. No contexto a rede de radares do Projeto - prevista para a etapa ora em andamento denominado RADASP II - permitira um monitoramento das chuvas em toda a area do Estado. Foi efetuado um levantamento preliminar das diferentes culturas no Estado sob o aspecto dos beneficios que podem ser auferidos com o uso dos dados de radar e das operacoes em que os dados tem utilidade. Com base numa estimativa do valor economico que podem ser auferidos com o uso do radar de tempo nas atividades agropecuarias no Estado e na experiencia de outros paises ficam obtidas indicacoes de beneficio/custo bastante favoraveis para o presente caso. Esta em consideracao a problematica relativa a identificacao das necessidades dos agricultores, da avaliacao economica dos beneficios e da determinacao dos produtos mais adequados ao atendimento daquelas necessidades 1: SID/SCD 2: 6066 3: INPE-6066-PRE/2181 4: MET 5: MC 6: am 7: [07] 10: Calheiros, Roberto V. 10: Antonio, Mauricio de A. 12: Uso do radar de tempo na agricultura paulista 14: 7-16 MFN: 7410 1: SID/SCD 2: 6068 3: INPE-6068-PRE/2183 4: MET 5: MC 6: am 7: [07] 10: Lima, Marley Cavalcante de 10: Santos, Regina Celia dos 10: Moraes, Jose Carvalho de 12: Estudo de secas no Estado de Alagoas 14: 160-169 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Agrometeorologia, 6 54: 09-16 jul. <1989> 56: Maceio 57: BR 58: DCM 61: 64: <1989> 68: PRE 90: b 76: CIENCIAS METEOROLOGICAS 87: AGROMETEOROLOGIA 87: SECA 87: AGRICULTURA 87: PRECIPICAO (METEOROLOGIA) 82: 83: A seca e um fenomeno de grande significancia para as operacoes na agricultura. Pode o correr com varios graus de severidade, afetando a economia do pais. Por ser um fenomeno resultante de varios fatores complexos interagindo com o ambiente, nao e possivel definir a seca objetivamente, sendo atribuido a ela definicoes sob o ponto de vista agronomico, hidrologico, ou meteorologico, de acordo com o enfoque que se queira dar ao problema MFN: 7411 1: SID/SCD 2: 6069 3: INPE-6069-PRE/2184 4: MET 5: MC 6: am 7: [07] 10: Sansigolo, Clovis Angeli 12: Analise das precipitacoes diarias de Piracicaba, SP, visando planejamento agricola 14: 224-231 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Agrometeorologia, 6 54: 09-16 jul. <1989> 56: Maceio 57: BR 58: CPTC 61: 64: <1989> 68: PRE 90: b 76: CIENCIAS METEOROLOGICAS 87: AGROMETEOROLOGIA 87: PRECIPITACAO (METEOROLOGIA) 87: CHUVA 87: PLANEJAMENTO 87: AGRICULTURA 83: Metodos simples sao descritos para analise dos dados de precipitacao diaria de Piracicaba, visando planejamento agricola. Estimativas das probabilidades dos diferentes eventos de interesse sao calculadas diretamente a partir das suas frequencias relativas de ocorrencia ou, alternativamente, uma distribuicao, como a normal, pode se ajustada. Os metodos foram aplicados a questoes agronomicas sobre o risco de veranicos, inicio, fim e duracao da estacao chuvosa e distribuicao das quantidades de chuva atraves do ano 91: FDB-19961021 92: FDB-MLR MFN: 7412 91: FDB-19961021 92: FDB-MLR 1: SID/SCD 2: 6070 3: INPE-6070-PRE/2185 4: MET 5: MC 6: am 7: [07] 10: Foster, Paulo Roberto Pelufo 10: Santos, Jesus Marden dos 12: Um estudo sobre heliogramas utilizados no Brasil 14: 338-347 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Agrometeorologia, 6 54: 09-16 jul. <1989> 56: Maceio 57: BR 58: DCM 61: 64: <1989> 68: PRE 90: b 76: CIENCIAS METEOROLOGICAS 87: MICROMETEOROLOGIA 87: AGROMETEOROLOGIA 87: INSTRUMENTACAO METEOROLOGICA 87: HELIOGRAMAS 83: Desde a implementacao da rede brasileira de observacoes meteorologicas de superficie tem sido registrado o numero de horas de brilho solar pela utilizacao do heliografo Campbell-Stockes. Varias limitacoes tem sido feitas a utilizacao deste instrumento pela maneira como as observacoes sao executadas em nosso pais. O tipo e a qualidade das tiras heliograficas usadas pelas diferentes instituicoes que operam as redes de observacoes, tem sido uma das causas de erros constantes embutidos nas series existentes. Neste trabalho analisa-se as caracteristicas de doze tipos diferentes de tiras heliograficas, a saber: cores, dimensoes, tempo de queima e sobre queima, assim como o valor minimo do fluxo de radiacao necessario para inicio da queima MFN: 7413 91: FDB-19961021 92: FDB-MLR 1: SID/SCD 2: 6071 3: INPE-6071-PRE/2186 4: MET 5: MC 6: am 7: [07] 10: Foster, Paulo Roberto Pelufo 10: Santos, Jesus Marden dos 10: Souza, Yomar Morada 12: Um modelo semi-empirico para estimar a radiacao solar global 14: 445-455 18: Anais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Agrometeorologia, 6 54: 09-16 jul. <1989> 56: Maceio 57: BR 58: DCM 61: 64: <1989> 68: PRE 90: b 76: CIENCIAS METEOROLOGICAS 87: MICROMETEOROLOGIA 87: AGROMETEOROLOGIA 87: PARAMETRIZACAO 87: VAPOR DE AGUA 87: DIOXIDO DE CARBONO 87: OZONIO 87: OXIGENIO 87: RADIACAO SOLAR 87: MODELO 83: Desenvolve-se um modelo semi-empirico para a estimativa da radiacao solar global diaria e as componentes de radiacao direta e difusa. No modelo sao usadas parametrizacoes para o espalhamento de Rayleigh e Mie e para a absorcao devida ao vapor d'agua, dioxido de carbono, ozonio e oxigenio MFN: 7449 1: SID/SCD 4: MET 5: T 6: m 7: [07] 16: Berlato, Moacir Antonio 18: Modelo de relacao entre o rendimento de grao de soja no Rio Grande do Sul e disponibilidade hidrica 38: Nao foi publicada 40: Pt 41: Pt 42: 50: Instituto de Pesquisas espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: out. <1987> 66: Sao Jose dos Campos 67: BR 68: TDI 76: CIENCIAS METEOROLOGICAS 87: SOJA 87: MODELOS 82: MFN: 7453 18: Modelo matematico para simular o fluxo-de-ar em florestas tropicais 38: Nao foi publicada 40: Pt 41: Pt 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 59: MET 62: INPE 64: dez. <1987> 66: Sao Jose dos campos 67: BR 68: TDI 90: b 76: CIENCIAS METEOROLOGICAS 87: MICROMETEOROLOGIA 87: FLORESTAS 1: SID/SCD 4: MET 5: T 6: m 7: [07] 16: Hidalgo, Luiz Guillermo Plaza MFN: 8525 1: SID/SCD 2: 6538 3: INPE-6538-PRE/2573 4: MET 5: MC 6: am 7: [07] 10: Carvalho, Ana Maria Gusmao 10: Silva Dias, Pedro Leite 12: Upper troposheric vorticy and the OLR structure over South america 14: 379-380 42: 53: International Conference in the Southern Hemisphere, 3 54: 13-17 Nov. <1989> 56: Buenos Aires 57: AR 58: CPTEC 61: 64: <1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: VORTICES 87: ANTICLONESES 83: The basic objective of this paper is the analysis of the relationship between the convective activity and the upper level circulation over South America. Previous modelling and observational studies have indicated that the upper anticyclonic circulatior over tropical South America and the tropical upper tropospheric trough of the NE coast of Brazil are related to the presence of deep tropospheric heating over the tropical part of the continent (Gutman and Schwerdtfeger, 1965; Silva Dias et al, 1983) 91: FDB-19990823 92: FDB-MLR MFN: 8527 1: SID/SCD 2: 6047 3: INPE-6047-PRE/2162 4: MET 5: MC 6: am 7: [07] 10: Moreira-Nordemann, Licia Maria 10: Forti, Maria Cristina 10: Di Lacio, V.L. 10: Espirito santo, Clovis M. 10: Danelon, Olga Maria 12: Acidification in southeasten Braszil 14: 257-296 18: SCOPE 36 38: cap. 8 40: En 41: En 42: 53: Acidification in Tropical Coutries 58: DCM 61: 62: John Wiley 64: <1988> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: POLUICAO 87: CHUVA ACIDA 87: AREAS RURAIS 83: Contemporary studies of the disruption of natural ecosystems by huma actions often involve methods determined by local, regional, national, an global concepts of environment. These concepts in turn depend on cultural and historical factors, and specific biological, hydrological, geological, and other factors in the natural environment. In highly developed countries, concern about air pollution began in cities. In recent years, however, regional studies have also focused on air pollution in rural areas, acidification of rain and snow, degradation of the surface waters, contamination of soils, and pollution of oceans. Pollution studies al are becoming more common in less developed countries as they struggle develop their industries, social systems, and economies. In Brazil, environmental concerns are a recent development. Most scientific studies and routine pollution measurements in Brazil are made in and around cities to monitor and restrain the existing pollution. Little attention has been given to dispersion and effects of pollutants in rural areas. This report describes environmental conditions of the southeastern region of Brazil. Most of the data are recent, incomplete, and, with a few exceptions, refer only to the more industrial and urban areas of the southeastern region. Nevertheless, they constitute a very large part of the data available for the nation of Brazil 91: FDB-19990823 92: FDB-MLR MFN: 8528 1: SID/SCD 2: 6048 3: INPE-6048-PRE/2163 4: MET 5: MC 6: am 7: [07] 10: Moreira-Nordemann, Licia Maria 10: Forti, Maria Cristina 10: Setzer, Alberto Waingort 12: Composicao quimica das aguas de chuva na Estacao Comandante Ferraz-Antartica 14: 193-214 18: Anais 40: Pt 41: Pt 42: 53: Seminario sobre Ciencias Atmosfericas e Espaciais do programa Antartico Brasileiro, 1 54: 27-29 abr. <1989> 56: Sao jose dos campos 57: BR 58: DCM 61: 64: <1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: CHUVA ACIDA 82: 83: Rain water samples were collected at Com. Ferraz Station, King George Island, Antarctic Peninsula during 1985, 1986 and 1977 summers. Na+,Mg2+,C1-,S024 and N03 contents were determined in these samples, and pH values were also measured. The results showed a large range variation of ion contents, and the strong marine influence in the chemical composition of the rain. Meteorological conditions found during event precipitations also interfered in that composition. No concentrations exhibit an anomalous behavior and were not correlated with So variations. It was observed that rain water in Antarctic Peninsula was slightly acid 91: FDB-19990823 92: FDB-MLR MFN: 8529 18: Anais 40: En 41: En 42: 53: International Symposium on water-Rock Interaction, 6 54: 208 Aug. <1989> 56: Malvern 57: UK 61: 64: <1989> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: CHUVA ACIDA 83: Rain and river water samples were collected in the Quilombo River Basin from April 84 through October 85. Na+, Cl - , NO-3, NH+4 and SO2-4were measured in these samples in order to establish a general budget of these ions in the basin. Results obtained are interpreted as function of natural and anthropogenic contributions. Ion balances for NO-3 and Na showed that the total input (dry + wet deposition)is lower than the total out-3 put in river water (positive balance)while ion balances were negative for S02-4, Cl- and NH+4. An experience of lixiviation of the soils, made in laboratory, showed tha SO2-4 and cl4-4 are adsorbed by them. This adsorption, followed by retention in the mangrove, uplains the low concentrations of these ions in the Quilombo River Waters. pH were also leasured and results showed no evidence of acidity in the waters 91: FDB-19990823 92: FDB-MLR 1: SID/SCD 2: 6855 3: INPE-6855-PRE/2826 4: MET 5: MC 6: am 7: [07] 10: Danelon, Olga Maria 10: Moreira-Nordemann, Licia Maria 12: Ion budgets in a catachment-natural and anthropogeic contributions 14: 181-182 MFN: 8570 1: SID/SCD 2: 7218 3: INPE-7218-PRE/3133 4: MET 5: MC 6: am 7: [07] 10: Moreira-Nordemann, Lycia maria 10: Forti, Maria Cristina 10: Di Lascio, Vania Lucia 10: Espirito Santo, Clovis Monteiro 10: Danelon, Olga Maria 12: Acidification in Southeastern Brazil 14: 257-296 38: Rodhe, H. 38: Herrera, R. 40: En 41: En 42: 53: Acidification in Tropical Countries 61: 64: <1988> 68: PRE 90: b 76: GEOQUIMICA AMBIENTAL 87: POLUICAO DO AR 87: AREA RURAL 83: Contemporary studies of the disruption of natural ecosystems by human actions often involve methods determined by local, regional, national, and global concepts of environment. These concepts in turn depend on cultural and historical factors, and specific biological, hydrological, geological, and other factors in the natural environment. In highly developed countries, concern about air pollution began in cities. In recent years, however, regional studies have also focused on air pollution in rural areas, acidification of rain and snow, degradation of the surface waters, contamination of soils, and pollution of oceans. Pollution studies also are becoming more common in less developed countries as they struggle to develop their industries, social systems, and economies. In Brazil, environmental concerns are a recent development. Most scientific studies and routine pollution measurements in Brazil are made in and around cities to monitor and restrain the existing pollu tion. Little attention has been given to dispersion and effects of pollutants in rural areas. This report describes environmental conditions of the southeastern region of Brazil. Most of the data are recent, incomplete, and, with a few exceptions, refer only to the more industrial and urban areas of the southeastern region. Nevertheless, they constitute a very large part of the data available for the nation of Brazil MFN: 8599 1: SID/SCD 2: 7201 3: INPE-7201-PRE-3116 4: MET 5: S 6: as 7: [07] 10: Moura, Antonio Divino 10: Ferreira, Marlene Elias 12: Meteorologia: as perspectivas de plena capacitacao 14: 15-25 30: Revista Brasileira de Tecnologia 31: 18 32: 4 40: En 41: En 42: 58: DCM 61: 64: jul. <1987> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: TREINAMENTO 83: 0 estagio atual da meteorologia reflete a acumulacao de conhecimentos desde os tempos primitivos - quando o homem, ignorante e indefeso, buscava proteger-se em seu meio ambiente - ate os dias de hoje, epoca em que se reconhece a influencia dos fenomenos atmosfericos nas mais diversas atividades da sociedade e se utilizam metodologias cientificas, supercomputadores e sofisticadas plataformas espaciais de observacao para a previsao do tempo e do clima 91: FDB-19991013 92: FDB-MLR MFN: 8663 1: SID/SCD 2: 7313 3: INPE-7313-PRE/3208 4: CEA 5: S 6: as 7: [07] 10: Barnes, Robert A. 10: Holland, Alfred C. 10: Kirchhoff, Volker Walter Johann Heinrich 12: Equatorial ozone profiles from the ground to 52 km during the Southern Hemisphere autumn 14: 5573-5583 30: Journal of Geophysical Research 31: 92 32: D5 40: En 41: En 42: 58: DGE 59: PROJETO QUIAT 61: 64: May <1987> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: OZONIO 87: medi‡Æo 87: ROCOZ-A 87: ECC 82: 83: We report the results of an ozone measurement campaign conducted at Natal, Brazil (5.9 degrees S, 35.2 degrees W)from March 25 to April 15, 1985. Seven profiles were obtained during this period, using ROCOZ-A and electrochemical concentration cell ozonesondes, standard U.S. meteorological radiosondes, and Super-Loki datasondes. Complete profiles of ozone, pressure, and temperature were obtained from the ground to 52 km, and all of the profiles correspond with site overpasses by ozone instruments on NASA and National Oceanic and Atmospheric Administration satellites. The profiles from this measurement series show reasonable agreement with established satellite climatologies. Stratospheric ozone variability was 2 83: or less during the 3 weeks of the measurement campaign, with stratospheric temperature and pressure variabilities half that amount. Low variability at a single location for this period implies comparable uniformity for ozone profiles over a large area around the measurement site. This condition at Natal removes the requirement of exact concurrence between satellite and local ozone measurements, allowing comparisons of larger sets of profiles and improving the precision of the intercomparisons. Regional ozone stability also allows an overall intercomparison of ozone measurements among the four satellites without the need for zonal mean averages. The auxiliary pressure and temperature profiles presented here allow the use of this data set as a transfer standard between satellite instruments with different fundamental ozone measurements. Finally, the low ozone variability in the stratosphere at Natal during this measurement series should provide an opportunity for high-quality intercomparisons of measured and modeled ozone concentrations in the equatorial stratosphere and lower mesosphere as well as a consistency check among satellite ozone measurementsm 91: FDB-20000106 92: FDB-MLR MFN: 8673 1: SID/SCD 2: 7321 3: INPE-7321-PRE/3216 4: CEA 5: MC 6: am 7: [07] 10: Jayanthi, Udaya Bhaskaram 12: X and gamma ray background observations in Antartica 14: 1-15 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DAS 61: 64: <1988> 68: PRE 90: b 76: ASTROFISICA 83: Atmospheric X and gamma rays are products of complex electromagnetic interactions between charged particles and atmospheric constituents. The latitudinal dependence of the cosmic ray secondaries, auroral and South Atlantic Anomaly phenomena produce flux variations, especially the later temporal flux variations. We propose to discuss these variations in relevance to balloon flight observations of X and gamma ray atmospheric background at polar latitudes 91: FDB-20000601 92: FDB-MLR MFN: 8674 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DAS 61: 64: <1988> 68: PRE 90: b 76: ASTROFISICA 87: RADIACAO COSMICA 82: 83: We discuss the angular distribution of the cosmic background radiation and the need for an experiment in an intermediate angular scale (1 < 0 < 10 m). This is a region that is not well investigated and Were the theoretical predictions can be tested 91: FDB-20000601 92: FDB-MLR 1: SID/SCD 2: 7322 3: INPE-7322-PRE/3217 4: CEA 5: MC 6: am 7: [07] 10: Villa Neto, Thyrso 12: Medidas na Antartica da anisotropia da radiacao cosmica de fundo 14: 16-28 MFN: 8675 1: SID/SCD 2: 7323 3: INPE-7323-PRE/3218 4: CEA 5: MC 6: am 7: [07] 10: Trivedi, Nalin Babulal 10: Padilha, Antonio Lopes 10: Costa, Jose Marques da 12: Micropulsacoes geomagneticas e geoeletricas na Estacao Antartica Comandante Ferraz 14: 29-39 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DGE 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: ALTA ATMOSFERA 82: 83: Geomagnetic and geoelectric pulsations in the range from 10 to 500 seconds are recorded at the Brazilian station Comandante Ferraz in the Antarctic peninsula. The characteristics of the PC3 and PC4 micropulsations are studied and discussed in terms of hydromagnetic waves generated at the sunward side of the earth's magnetosphere. Besides, the same measurements are used to obtain a local conductivity profile of the earth's crust and upper mantle at the station region using principles of electromagnetic induction 91: FDB-20000601 92: FDB-MLR MFN: 8676 1: SID/SCD 2: 7324 3: INPE-7324-PRE/3219 4: CEA 5: MC 6: am 7: [07] 10: Medrano-Balboa, Rene Adalid 10: Abdu, Mangalathayil Ali 10: Batista, Inez Staciarini 12: Pesquisas ionosfericas na Antartica: medidas de ruido cosmico 14: 40-61 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: Pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DAE 61: 64: <1988> 68: PRE 90: b 76: AERONOMIA 87: ALTA ATMOSFERA 87: RADIOMETRO 87: OPERACAO ANTARTICA VI 82: 83: Two riometers with antennas pointing one to the zenith and the other inclined to the south were installed and operated during the summer of the Brazilian Antartic Operation VI. Preliminary results of the observations identifying an apparent seasonal behavior in the ionospheric absorption, observed in the cosmic noise intensity recorded by the inclined antenna, and some energetic particle precipitation events are presented. The present experiment with riometers makes part of a more broad and complete ionospheric research project in Antarctica proposed by the INPE team. A description of such a project showing its importance in the study of the auroral and subauroral regions and their coupling with the ionosphere of the equatorial latitudes is also presented 91: FDB-20000601 92: FDB-MLR MFN: 8677 1: SID/SCD 2: 7325 3: INPE-7325-PRE/3220 4: CEA 5: MC 6: am 7: [07] 10: Pereira, Enio Bueno 12: O radonio na Peninsula Antartica como tracador natural da atmosfera 14: 100-116 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DGE 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: BAIXA ATMOSFERA 87: RADONIO 87: ESTACAO COMANDANTE FERRAZ 82: 83: Atmospheric radon-222 was continuously measured during 1986 at the Brazilian Antarctic station "Ferraz" (62 degrees S, 58 degrees W). A concentration of 2.6 ñ 1.8 X 10-2 Bq.m-3 on the average was found, but occasional peaks of 12.6 X 10-2 Bq.m-3 were also present. Data showed a periodicity of 25 days and a strong association with short period temperature increases. This preliminary interpretation of the data describes a continental influence of air masses from the southern extreme of the South 91: FDB-20000601 92: FDB-MLR MFN: 8678 1: SID/SCD 2: 7326 3: INPE-7326-PRE/3221 4: CEA 5: MC 6: am 7: [07] 10: Artaxo, Paulo 10: Andrade, Fatima 10: Setzer, Alberto Waingort 12: A composicao elementar e as fontes de aerossois na atmosfera 14: 117-138 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DSR 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: BAIXA ATMOSFERA 87: AEROSSOIS 87: ESTACAO COMANDANTE FERRAZ 87: ILHA REI GEORGE 87: MICROSANDA 82: 83: This work reports a composition study of aerosols sampled since 1985 at the Brazilian Antarctic station Com. Ferraz, King George Island in Antarctica. Nuclear method for total analysis like PIXE as well as X-ray electron micropulse method for individual particle analysis have been employed. Very low aerosol concentrations are found; 85 83: of the aerosol have marine composition but soil and sulphur compounds are also present in the fine particulate 91: FDB-20000601 92: FDB-MLR MFN: 8679 1: SID/SCD 2: 7327 3: INPE-7327-PRE/3222 4: CEA 5: MC 6: am 7: [07] 10: Satyamurty, Prakki 10: Rao, Vadlamudi, Brahamananda 10: Yamasaki, Yoshihiro 12: Caracteristicas e processos fisicos que afetam o clima da Antartica 14: 139-153 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DCM 61: 64: <1988> 68: PRE 90: b 76: ESTUDOS DO TEMPO E DO CLIMA 87: SIMULACAO 87: MODELO DE CIRCULACAO GERAL 87: CIRCULACAO ATMOSFERICA 82: 83: Observed characteristics of the climate of Antarctica are briefly reviewed. Several physical processes which affect the climate of Antarctica are discussed. Also given is a critical discussion of the results of climatic simulation. The deficiencies of the general circulation models in simulating the observed climate are mentioned 91: FDB-20000601 92: FDB-MLR MFN: 8680 1: SID/SCD 2: 7328 3: INPE-7328-PRE/3223 4: CEA 5: MC 6: am 7: [07] 10: Bevilaqua, Rute Maria 12: Interacao entre a extensao do gelo antartico e o clima brasileiro 14: 175-192 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DCM 61: 64: <1988> 68: PRE 90: b 76: ESTUDOS DE TEMPO E DO CLIMA 87: GELO ANTARTICO 87: ANOMALIAS 82: 83: The extension of the Antarctic ice is analyzed and possible implications, especially those that would affect weather and climate is discussed. Speculations are made about the viability of climatic anomaly forecasting 91: FDB-20000601 92: FDB-MLR MFN: 8681 1: SID/SCD 2: 7329 3: INPE-7329-PRE/3224 4: CEA 5: MC 6: am 7: [07] 10: Moreira-Nordemann, Lycia Maria 10: Forti, Maria Cristina 10: Setzer, Alberto Waingort 12: Composicao quimica das aguas de chuva na Estacao Comandante Ferraz - Antartica 14: 193-213 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DCM 61: 64: <1988> 68: PRE 90: b 87: AGUA 87: ESTACAO COMANDANTE FERRAZ 87: CHUVA ACIDA 82: 83: Rain water samples were collected at Com. Ferraz Station, King George Island, Antarctic Peninsula during 1985, 1986 and 1977 summers. Na+, Mg2+,Cl-SO24 and NO-3 contents were determined in these samples, and pH values were also measured. The results showed a large range variation of ion contents, and the strong marine influence in the chemical composition of the rain. Meteorological conditions found during event precipitations also interfered in that composition. NO concentrations exhibit an anomalous behavior and were not correlated with SO variations. It was observed that rain water in Antarctic Peninsula was slightly acid 91: FDB-20000601 92: FDB-MLR MFN: 8682 1: SID/SCD 2: 7330 3: INPE-7330-PRE/3225 4: CEA 5: MC 6: am 7: [07] 10: Stevenson, Merritt Raymond 10: Carvalho, Pedro R 12: Meteorological measurements made using brazilian drifting buoys: technical aspects and first results 14: 215-230 18: Ciencias Atmosfericas e Espaciais na Antartica 38: Editores Enio Bueno Pereira; Volker Walter Joahann heinrich Kirchhoff 40: Pt 41: pt 42: 53: Seminario Sobre Ciencias Atmosfericas e Espaciais do Programa Antartico Brasileiro, 1 54: 27-29 abr. <1988> 56: Sao Jose dos Campos 58: DGE 61: 64: <1988> 68: PRE 90: b 76: OCEANOGRAFIA 87: BOIAS DE DERIVA 87: BOIAS OCEANOGRAFICA 87: SENSORES METEOROLOGICOS 82: 83: Progress in the technical development and use of meteorological sensors fixed to a Brazilian drifting oceanographic buoy is presented. Research with thermistors to measure both air and water temperatures from buoys showed promise with regard to simplicity in their applications and the associated costs. These sensors were designed, tested and used in Antarctica in March 1985 and 1986, and after being redesigned, used again during January-April of 1987. A significant advancement was made during 1987, with the construction of a compact tower to support meteorological sensors 2 m above the water line of the buoy. This instrumented buoy was, used in the Polar Front of the Antarctic Circumpolar Current, in the Drake Passage during December 1987. The buoy's sensors included two each, for air and water temperature, an anemometer for wind speed and direction and an electronic compass within the buoy to compensate for the effects of buoy rotation on wind direction. Problems related to the development and use of these drifting buoys and their data are discussed and future expectations are noted 91: FDB-20000601 92: FDB-MLR MFN: 8699 1: SID/SCD 2: 7357 3: INPE-7357-PRE/3248 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 12: Geoquimica da media e baixa atmosfera: impactos ambientais por deteriorizacao da camada de ozonio 14: 41-52 30: Geochimica Brasileira 31: 2 32: 1 40: Pt 41: Pt 42: 58: DGE 59: QUIAT 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: OZONIO ESTRATOSFERICO 87: CAMADA DEOZONIO 87: GASES 87: DESTRUICAO 83: Atmospheric ozone is discussed in view of recent concerns about the ozone layer. We emphasize the atmosphere, its chemical aspects, the definition of the ozone layer, and its possible destruction. Even the parcial destruction,of the ozone layer would have disastrous consequences. Among these we present characteristics of skin cancer, action on microorganisms, the greenhouse effect, and possible impacts on forests. The objective of this presentation is to share these concerns with the community and stimulate more studies and research in this area of Geochemistry 91: FDB-20000117 92: FDB-MLR MFN: 8700 1: SID/SCD 2: 7356 3: INPE-7356-PRE/3247 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walter Demetrio 12: X ray measurements in the atmospheric environmental of Brazil 14: 499-502 30: Nuclear Instruments and Methods 31: A280 32: 23 40: En 41: En 42: 58: DGE 59: PROJETO ELAT 61: 64: Aug. <1989> 68: PRE 76: GEOFISICA ESPACIAL 87: MAGNETOSFERA 87: RAIOS X 87: ANOMALIAS MAGNETICAS 87: ELETRICIDADE ATMOSFERICA 82: 83: X-ray measurements using balloon-borne omnidirectional scintillation detectors were done in Sao Jose dos Campos, Brazil, on April 14 and December 18, 1981. The atmospheric, diffuse and magnetospheric components were measured. The atmospheric and diffuse components were found to be of the same order of magnitude in this region. The magnetospheric component showed to be strongly dependent on magnetic activity. Analysis of variations of this component suggests the occurrence of wave-particle interactions in this region in association with the South Atlantic magnetic anomaly (SAMA) 91: FDB-20000117 92: FDB-MLR MFN: 8702 1: SID/SCD 2: 7454 3: INPE-7454-PRE/3243 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 12: Ozonio: ameaca sobre a Antartida 14: 55-58 30: Revista Brasileira de Tecnologia 31: 19 32: 4 40: Pt 41: Pt 42: 58: DGE 59: QUIAT 61: 64: <1988> 68: PRE 76: GEOFISICA ESPACIAL 87: BURACO DE OZONIO 87: OZONIO ESTRATOSFERICO 87: DESTRUICAO 87: CAMADA DE OZONIO 82: 83: 0 buraco de ozonio da Antartida e talvez o fenomeno geofisico mais extraordinario dos ultimos vinte anos. A priori pode ser interpretado como a materializacao indesejavel da destruicao da camada de ozonio na atmosfera, hipotese prevista ha mais de vinte anos por pesquisadores americanos preocupados com os constantes aumentos de injecoes de gases poluentes na atmosfera 91: FDB-20000117 92: FDB-MLR MFN: 8716 1: SID/SCD 2: 7437 3: INPE-7437-PRE/3327 4: CEA 5: S 6: as 7: [07] 10: Takahashi,Hisao 10: Gobbi, Delano 10: Batista, Paulo Prado 10: Melo, Stella M.L. 10: Teixeira, Nelson Rodrigues 10: Buriti, R.A 12: Dynamical influence on the equatorial airglow observed from the south american sector 14: 817-825 30: Advances in Space Research 31: 21 32: 6 40: En 41: En 42: 58: DGE 61: 64: <1988> 68: PRE 76: AERONOMIA 87: LUMINESCENCIA 83: The upper atmospheric airglow emissions, 0I 557.7 mn, NaD 589.3 nm, OH (9,4)and 02 atmospheric (0, 1)bands and their rotational temperatures have been measured using ground-based multichannel airglow photometers, one located near the equator at Fortaleza (3.9 S, 3 8.4 W)and the other at low-middle latitude Cachoeira Paulista (22.7 S, 45.0 W). Monthly averaged nocturnal variations calculated from the data from 1987 to 1993 were used to study the influence of atmospheric dynamical processes on these emissions. Harmonic analysis revealed that the Cachoeira Paulista data are mainly represented by a 12 hour period oscillation. Phase differences between the different emissions reveal that the vertical phase velocity is about 4 km/h and the vertical wavelength about 50 kni- Fortaleza data on the other hand showed longer period, 24 hours, slow vertical propagation velocity, 1. 1 km/h, and short vertical wavelength, about 30 km. These facts lead us to conclude that the Cachoeira Paulista. data are mainly controlled by the semidiumal tidal oscillation and the Fortaleza data are controlled by the diurnal tide 91: FDB-20000125 92: FDB-MLR MFN: 8732 1: SID/SCD 2: 7429 3: INPE-7429-PRE/3319 4: CEA 5: S 6: as 7: [07] 10: Trivedi, Nalin Babulal 10: Kane, Rajaram Purushotam 10: Padilha, Antonio Lopes 10: Costa, Jose Marques da 12: Geomagnetic daily variations in H at Alcantara and Eusebio in the Brazilian equatorial region 14: 155-157 30: Journal of Atmospheric and Terrestrial Physics 31: 51 32: 3 40: En 41: En 42: 58: DGE 59: PROJETO GEOMA 61: 64: <1989> 68: PRE 76: GEOFISICA ESPACIAL 87: REGIAO EQUATORIAL 87: ELETROJATOS EQUATORIAL 87: GEOMAGNETISMO 82: 83: Daily variations in H at Alcantara (dip +3.8 degree)and Eusebio (dip -6.5 degree), two stations in the equatorial electrojet region in Brazil, are compared. The electrojet in NE Brazil exhibits N-S asymmetry. The discrepancy between the daily variation range in H indicates the presence of complicated ionospheric currents in this region and warrants a detailed investigation 91: FDB-20000125 92: FDB-MLR MFN: 8775 1: SID/SCD 2: 7457 3: INPE-7457-PRE/3346 4: CEA 5: S 6: as 7: [07] 10: Kane, Rajaram Purushotam 12: Relationship between the southern oscillation/ El Nino and rainfall in some tropical and midlatitude regions 14: 223-235 30: Proceedings of the Academic Science (Earth Planetary Science) 31: 98 32: 3 40: En 41: En 42: 58: DGE 61: 64: Oct. <1989> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: OSCILACOES SUL 87: EL NINO 87: CHUVA TROPICAL 87: CORRELACAO 83: Association of ENSO (El Nino/southern oscillation)events with annual rainfalls in S. America, Africa, India. Australia and New Zealand was found to be poor except for India and Victoria. For these two regions the relationships were one-sided i.e. most of the ENSO were associated with droughts. but many droughts were not associated with ENSO. For some rainfall series. the relationships are significant and prominent periodicities existed in the long periodicity region 91: FDB-20000128 92: FDB-MLR MFN: 8776 1: SID/SCD 2: 7466 3: INPE-7466-PRE/3355 4: CEA 5: S 6: as 7: [07] 10: Tsurutani, Bruce T. 10: Gonzalez-Alarcon, Walter Demetrio 12: The cause of hight-intensity long-duration continuous AE activity (HILDCAAS): interplanetary alfen wave trains 14: 405-412 30: Planetary and Space Science 31: 35 32: 4 40: En 41: En 42: 58: DGE 59: PROJETO MAGHEL 61: 64: <1987> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: vento solar 87: ondas magnetohidrodinƒmicas 87: meio interplanet rio 88: auroras 88: magnetohydrodynamic waves 88: interplanetary medium 88: solar wind 83: It is shown that high intensity (AE > 1,000 nT), long duration (T > 2 d)continuous auroral activity (HILDCAA)events are caused by outward (from the sun)propagating interplanetary Alfven wave trains. The Alfven waves are often (but not always)detected several days after major interplanetary events, such as shocks and solar wind density enhancements. Presumably magnetic reconnection between the southward components of the Alfven wave magnetic fields and magnetospheric fields is the mechanism for transfer of solar wind energy to the magnetosphere. If the stringent requirements for HILDCAA events are relaxed, there are many more AE events of this type. A brief inspection indicates that these are also related to interplanetary Alfv‚nic fluctuations. We therefore suggest that most auroral activity may be caused by reconnection associated with Alfv‚nic waves in the interplanetary medium 91: FDB-20000128 92: FDB-MLR MFN: 8777 1: SID/SCD 2: 7467 3: INPE-7467-PRE/3356 4: CEA 5: S 6: as 7: [07] 10: Tsurutani, Bruce T. 10: Godstein, Bruce E. 10: Gonzalez-Alarcon, Walter Demetrio 12: Comment "a new method of forecasting geomagnetic activity and proton showers" by A. hewish and P.J. Duffet-smith 14: 205-206 30: Planetary and Space Science 31: 36 32: 2 40: En 41: En 42: 58: DGE 59: PROJETO MAGHEL 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: PLASMA ESPACIAL 87: MAGNETOSFERA 83: We commend the efforts of Hewish and Duffct-Smith (1987)to develop a method and system which can detect and track solar wind plasma densities at a distance of up to 0.6 a.u. from the sun (to 1.5 a.u.). The method discussed would identify high plasma densities behind interplanetary shocks well in advance of measurements made by the ISEE-3 spacecraft (in orbit about We sun-Earth 0 Earth L1)libration point; see Tsurutani and Baker, 1979). If such an interplanetary scintillation system were put into continuous usage, it would indeed increase our advanced knowledge of impending high speed solar wind streams 91: FDB-20000128 92: FDB-MLR MFN: 8781 1: SID/SCD 2: 7403 3: INPE-7403-PRE/3293 4: CEA 5: S 6: as 7: [07] 10: Sahai, Yogeshwar 10: Kane, Rajaram Purushotam 10: Teixeira, Nelson Rodrigues 12: Antartic ozone decline and ozone measurements in Brazil 14: 49-52 30: Revista Brasileira de Geopfisica 31: 5 32: : 40: En 41: En 42: 58: DGE 59: QUIAT 61: 64: <1987> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: OZONIO 87: CAMADA DE OZONIO 87: MEDIDAS DA CONCENTRACAO 87: ESPECTROFOTOMETRO 87: OZONIO ESTRATOSFERICO 82: 83: Recent satellite and ground-based observations of decline of atmospheric ozone in Antarctic region during southern spring (September-November)have attracted world-wide attention of scientists due to possible global environmental implications. Measurements of the total atmospheric ozone started at our Institute at Cachoeira Paulista (22.7 degree S, 45.O degree W), SP, using a Dobson spectrophotometer in 1974. In 1978, another station was added at Natal (5.8 degree S, 35.2 degree W), RN, in collaboration with the National Oceanic and Atmospheric Administration, Boulder, U.S.A. Both the stations carry out regular total ozone measurements and with Huancayo (12.O degree S, 75.3 degree W), Peru, and Buenos Aires (34.5 degree S, 58.7 degree W), Argentina, are the only four stations in the South America. In this paper, a comparison of the monthly ozone values in Brazil in relation to other South American and Antarctic stations is presented. It' is shown that the Antarctic ozone decline does not ex A to the middle and low latitudes 91: FDB-20000131 92: FDB-MLR MFN: 8782 1: SID/SCD 2: 7475 3: INPE-7475-PRE/3362 4: CEA 5: S 6: as 7: [07] 10: Tsurutani, B.T. 10: Mcpherron, Robert 10: Gonzalez-Alarcon, Walter Demetrio 12: Aurora hypotheses 14: 1228 30: Science 31: 239 32: 4845 40: En 41: En 42: 58: DGE 59: PROJETO MAGHEL 61: 64: <1989> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: MAGNETOSFERA 87: AURORA 87: ONDAS ALFVEN 83: Richard A. Kerr's Research News article (28 Aug., p. 974)and the letter Robert McPherron with Kerr's rcply,(4 Dec., p.1340)concerning interpretation of the find of the Bruce Tsurutani and Walter Gonzalez (1)that high intensity long duration continaurora events (HILDCAAs)are caused large-Wlitude, Alfven waves was a stimting discussion 91: FDB-20000131 92: FDB-MLR MFN: 8783 1: SID/SCD 2: 7404 3: INPE-7404-PRE/3293 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 12: Variacao temporais da concentracao de ozonio de superficie 14: 3-8 30: Revista Brasileira de Geopfisica 31: 6 32: 1 40: Pt 41: Pt 42: 58: DGE 59: QUIAT 61: 64: <1988> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: OZONIO ESTRATOSFERICO 87: MEDIDAS DA CONCENTRACAO 87: QUIMICA DA ATMOSFERA 87: SENSOR UV 87: RADIACAO ULTRAVIOLETA 82: 83: The first results of ozone concentration measurements are presented for the region of Sao Jose dos Campos. The results show for the first time some of the time variations of the ozone concentration sampled close to the surface. Ozone is a natural gas of the non polluted atmosphere but it has become increasingly difficult finding an ecosystem not affected by artificial elements, added to the atmosphere, that might interfere with the ozone chemistry. Its presence in the stratosphere is highly desirable for the absorption of UV radiation, but in the troposphere its concentration may become excessive owing to combustion processes, and since it is a toxic gas, may become harmful to life. Surface ozone measurements are presented for several ecosystems showing its diurnal variation. Seasonal and meteorological influences can be seen in a 13 month set of data from Sao Jose dos Campos. The concentrations are larger than results from the remote sites Cuiaba (MT), Belem (PA), and Manaus (AM), showing well pronounced diurnal variations, with maximum around noon and minimum close to dawn 91: FDB-20000131 92: FDB-MLR MFN: 8789 1: SID/SCD 2: 2974 3: INPE-2974PRE 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: Mota, Adalton G. 10: Azambuja, S.O 12: A camada de ozonio: um filtro ameacado 14: 28-33 30: Ciencia Hoje 31: 5 32: 28 40: Pt 41: Pt 42: 58: DGE 59: QUIAT 61: 64: <1987> 66: PROJETO QUIAT 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: OZONIO ESTRATOSFERICO 87: medi‡Æo 87: concentra‡Æo 87: ESPECTROMETRO DOBSON 87: CAMADA DE OZONIO 87: RADIACAO ULTAVIOLETA 83: Nem so continentes e mares adquirem, ao longo dos periodos geologicos, sucessivas conformacoes. Tambem a atmosfera terrestre experimentou mudancas. A mais significativa teve inicio ha cerca de 600 milhoes de anos, como decorrencia do surgimento e da multiplicacoo dos organismos capazes de usar a luz solar para a producao de energia atraves da fotossintese. Como subproduto de sua atividade, eles pasaram a garantir um suprimento continuo do oxigenio molecular ao envoltorio gasoso da Terra, iniciando transformacoes que ajudaram a moldar a composicao do ar que respiramos hoje. longo tempo decorreu desde entao ate o pleno desenvolvimento da vida animal e vegetal, pois a incidencia de radiacao ultavioleta oriunda do sol permaneceu suficientemente grande para impedir o desenvolvimento celular na superficie terrestre. este processo biologico so se tornou possivel a partir da formacao de uma camada atmosferica de um suproduto do oxigenio - o ozonio - que funciona como um filtro natural daquela radiacao. A vida primordial criou, portanto, o oxigenio livre e, por esta via, contribuiu decisivamente para formar a camada de ozonio que nos protege. O que se pergunta hoje e se a vida moderna pode destrui-la. Data de 1974 o primeiro alerta cientifico nessa direcao. O preco ja o conhecemos. O aumento da radiacao ultravioleta que atinge a superficie terrestre provocaria maior incidencia de cancer de pele, reducao das safras agricolas e morte de muitas especies, alem de modificacoes na distribuicao termica e na circulacao de ar no palneta. Toda a quimica da atmosfera seria afetada, com aumento nas concentracoes de metano (CH4)e de monoxido de carbono (C)), fenomeno evidentemente indesejaveis. Tais constatacoes estao na origem dos esforcos sistematicos de medicao e acompanhamento levados a efeito por inumeras equipes cientificas em escala global. No Brasil, esse trabalho esta sendo desenvolvido por cientistas e tecnicos do Instituto de Pesquisas Espaciais, sediado em Sao Jose dos Campos e Natal 91: FDB-20000201 92: FDB-MLR MFN: 8790 1: SID/SCD 2: 7376 3: INPE-7376-PRE/3266 4: CEA 5: S 6: as 7: [07] 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walter Demetrio 12: Anomalia magnetica brasileira 14: 30-35 30: Ciencia Hoje 31: 9 32: 52 40: Pt 41: Pt 42: 58: DGE 59: GEOMA 61: 64: <1989> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: GEOMAGNETISMO 87: ANOMALIAS MAGNETICA 87: CINTUROES DE RADIACAO 82: 83: Campo magnetico da Terra e asimetrico. Sua mais baixa intensidade se encontra numa extensa regiao que compreende parte do oceano Atlantico e parte do territorio brasileiro. Como consequencia direta desse fenomeno - denominado ' anomalia magneticas brasileira' ou ' anomalia magnetica do Atlantico Sul' - o cinturao de radiacao que circunda o planeta, conhecido como cinturao de Van allen, encontra-se ali rebaixado, recebendo a atmosfera local um maior bombardeamento de particulas oriundas do espaco exterior. Esta particularidade, descoberta no inicio da era dos satelites, nos anos 50, faz da regiao um singular laboratorio natural de pesquisa sobre fisica do plasma e da radiacao, geofisica, geomagnetica e aeronomia (investigacao das camadas superiores da atmosfera). Destacam-se neste contexto os estudos dos processos relacionados com a origem das particulas incidentes e os efeitos que produzem na atmosfera local. Mediadas efetuadas ao longo dos ultimos quatro seculos indicam que, numa escala de alguns milhares de anos, essa regiao de baixa intensidade magnetica tende a mover-se ao redor do planeta, na diracao leste-oeste. E observacoes astronomicas mostram que anomalias semelhantes e essa - que resulta, fundamentalnente, de uma nao-coincidencia entre os centros magneticos e geograficos da terra - devem ocorrer em muitos outros planetas do sistema solar, ideia reforcada pela recente verificao do fenomeno em Jupiter 91: FDB-20000201 92: FDB-MLR MFN: 8791 1: SID/SCD 2: 7377 3: INPE-7377-PRE/3267 4: CEA 5: S 6: as 7: [07] 10: Gonzalez-Alarcon, Walter Demetrio 10: Pinto Jr., Osmar 10: Gonzalez, Alicia Luisa Clua 10: Chian, Abrahan Chian-Long 10: Pinto, Iara Regina Cardoso de Almeida 12: Auroras 14: 26-31 30: Ciencia Hoje 31: 10 32: 60 40: Pt 41: Pt 42: 58: DGE 59: MAGHEL 61: 64: <1989> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: MAGNETOSFERA 87: AURORAS 83: Fenomeno que sempre intrigou o homem, as auroras sao efeito do bombardeio de particulas energeticas provenientes do Sol sobre atomos e moleculas das camadas superiores da atmosfera. O processo assemelha-se ao que ocorre nos aparelhos comuns de televisao: eletrons sao acelerados rumo a tela, produzindo as imagens. No caso do nosso planeta, a tela e a atmosfera e a imagem, a aurora 91: FDB-20000201 92: FDB-MLR MFN: 8806 1: SID/SCD 2: 7459 3: INPE-7459-PRE/3348 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: Marinho, Edith Vasconcellos Andrade 10: Dias, P.L.S. 10: Calheiros, R. 10: Andre, R. 10: Volpe, C 12: O3 and CO from burning sugar cane 14: 264 30: Nature 31: 339 32: 6222 40: En 41: En 42: 58: DGE 59: QUIAT 61: 64: <1989> 68: PRE 90: b 76: GEOFISICA ESPACIAL 87: CANA-DE-ACUCAR 87: QUEIMADAS 87: OZONIO ESTRATOSFERICO 83: SiR-Brazil produced the first alcoholpowered automobiles after 1980, following a National Plan for reducing oil imports. They proved to be a great success: today 99 per cent of all manufactured vehicles for the internal market run on alcohol. Tropical countries make their sugar and alcohol from sugar cane. The manual harvest of sugar cane requires the initial burning of its foliage. This burning increased sharply in Brazil after the National Alcohol Programme was started. In 1988, more than four million hectares of sugar cane were grown in Brazil, about half of which was in the state of Sdo Paulo 91: FDB-20000201 92: FDB-MLR MFN: 8908 1: SID/SCD 2: 7831 3: INPE-7831-PRE/3671 4: MET 5: MC 6: am 10: Machado e Silva, Antonio Jose Ferreira 10: Barbosa, Oswaldo Caldas 12: Correcao geometrica, com uso de um modelo digital de elevecao, das imagens SPOT obtidas em visada lateral (nivel 3) 14: 225-231 18: Anais 21: v.1 40: Pt 41: Pt 42: 52: Instituto Nacional de Pesquisas Espaciais 53: Simposio Brasileiro de Sensoriameto Remoto, 5 54: 11-15 out. <1988> 56: Natal 57: BR 61: 64: <1988> 68: PRE 83: A visada lateral acentua o deslocamento devido ao relevo A retificacao da imagem obtida nestas condicoes devera obrigatoriamente fazer uso de um Modelo Digital de Elevacao (MDE). Tres metodologias sao, sugeridas e indicadas suas vantagens e desvantagens . E necessario alterar-se os parametros do elipsoide padrao e quatro opcoes sao testadas. 0 MDE sera obtido atraves do SIG (Sistema de Informacoes Geograficas)do INPE 91: FDB-20000806 92: FDB-MLR MFN: 8909 1: SID/SCD 2: 7827 3: INPE-7827-PRE/3667 4: MET 5: MC 6: am 10: Pereira Filho, Waterloo 12: Uma proposta de selecao de criterios para estudo de alteracoes ambientais atraves de imagens orbitais 14: 113-123 18: Anais 21: v.1 40: Pt 41: Pt 42: 52: Instituto Nacional de Pesquisas Espaciais 53: Simposio Brasileiro de Sensoriameto Remoto, 5 54: 11-15 out. <1988> 56: Natal 57: BR 61: 64: <1988> 68: PRE 76: ESTUDOS INTEGRADOS DO MEIO AMBIENTE 87: MONITORAMENTO DO MEIO AMBIENTE 87: RESERVATORIO 87: BACIA HIDROGRAFICA 87: IMAGENS LANDSAT 88: ENVIRONMENTAL MONITORING 88: RESERVOIRS 82: 83: Este trabalho preocupa-se em identificar uma metodologia que possibilite o estudo do comportamento ambiental da regiao do ''entorno'' do reservat¢rio da hidreletrica TucuruI. Em primeiro instante foi necessaria a definicao de areas caracterizadas por fatores com maior ou menor potencial de alteracao ambiental. Em todas as sub bacias. hidrograficas foram avaliados fatores abioticos e antropicos que pudessem afetar as trocas geoquimicas entre o ecossistema terrestre e aquatico. Os fatores abioticos selecionados foram: geomorfologia e solos. Com relacao a geomorfologia utilizou-se a variavel dissecacao como criterio. Para identificar a contribuicao dos diferentes tipos de solos , em relacao aos sedimentos em suspensao foi observado a variavel textura. 0 fator antropico foi identificado pela porcentagem e a taxa de desmatamento entre 1979 e 1987, fator este monitorado atraves de dados Landsat. Atraves da identificacao destas sub bacias hidrograficas pretende-se verificar a interrelacao de diferentes condicoes fisicas e antropicas, identificaveis por satelite, de cada sub bacia na dinamica das transformacoes ambientais 91: FDB-20000806 92: FDB-MLR MFN: 9229 1: SID/SCD 2: 8463 3: INPE-8463-PRE/4228 4: CEA 5: S 6: as 7: [07] 10: Tang, F. 10: Tsurutani, B.T. 10: Gonzalez-Alarcon, Walter Dem‚trio 10: Smith, E. J. 10: Akasofu, S.I 12: Solar Sources of Interplanetary Southward Bz Events Responsible for Major Magnetic Storms (1978-1979) 14: 3535-3541 30: Journal of Geophysical Research 31: 94 32: A4 40: En 41: En 42: 57: BR 61: 64: <1989> 68: PRE 90: b 76: GEOFÖSICA ESPACIAL 87: tempestades magn‚ticas 87: campo magn‚tico solar 87: southward interplanet rio 87: fontes 88: interplanetary soutward 88: magnetic storms 88: solar magnetic field 88: sources 83: Tsurutani et al. [1988]analyzed the 10 intense interplanetary southward Bz events that led to major magnetic storms (Dst < -100 nT)during the 500-day interval, August 16, 1978, through December 28, 1979. In this paper we report solar sources of the major storms and discuss their interplanetary effects. Seven of the sources of the 10 major storms are flares and 3 are prominence eruptions. The ratio is consistent with frequency of these two types of events occurring on the Sun during this period. The flares range from M1 to X2 in peak soft X ray emissions. However, the largest of the 10 storms (Dst = -220 nT)as well as the two strongest shocks (M>3.0)are associated with prominence eruptions. For three of the five southward Bz events in which the driver gases are the causes of the intense southward field leading to magnetic storms, the photospheric fields of the solar sources have no dominant southward component, indicating the driver gas fields do not always result from a simple outward convection of solar magnetic fields. Finally we compare the solar events and their resulting interplanetary shocks and find that the standard solar parameters do not correlate with the strengths of the resulting shocks at 1 AU. The implications are discussed 91: FDB-20010430 92: FDB-MLR MFN: 9341 1: SID/SCD 2: 8344 3: INPE-8344-PRE/4127 4: CEA 5: S 6: as 7: [07] 10: Chian, Abraham Chian Long 12: Nonlinear wave-wave interactions in astrophysical and space plasmas 14: 249-295 30: Astrophysics and Space Science 31: 242 32: 2 40: En 41: En 42: 53: Simp¢sio de Plasma Espacial 54: set. <1987> 56: SÆo Jos‚ dos Campos 58: DGE 61: 64: <1987> 68: PRE 76: GEOFÖSICA ESPACIAL 87: intera‡Æo de onda 87: vento solar 87: nucleo gal tico 87: ativo 87: caos 87: magnetosferas planet rias 87: pulsares 88: wave interaction 88: solar wind 88: active galatic Nuclei (AGN) 88: chaos 88: planetary magnestospheres 88: pulsars 83: We discuss nonlinear mode-mode coupling phenomena in cosmic plasmas. Four problems are considered: (1)nonlinear three-wave processes in the planetary magnetosphere involving the interaction of auroral Langmuir, Alfv‚n and whistler waves, (2)nonlinear three-wave processes in the solar wind involving the modulation of Langmuir and electromagnetic waves by ion-acoustic waves, (3)order and chaos in nonlinear four-wave processes in cosmic plasmas, and (4)regular and chaotic dynamics of the relativistic Langmuir turbulence and its application to pulsar and AGN emissions. The observational evidence in support of nonlinear wave-wave interactions in space and astrophysical plasmas is presented 91: FDB-20010814 92: FDB-MLR MFN: 9354 1: SID/SCD 2: 8369 3: INPE-8369-PRE/4149 4: FISPLASMA 5: S 6: as 7: [07] 10: Del Bosco, Edson 10: Dallaqua, Renato Sergio 10: Ludwing, Gerson Otto 10: Bittencourt, Jos‚ Augusto 12: Isotopic enrichment in a plasma centrifuge 14: 1716-1718 30: Applied Physics Letters 31: 50 32: 24 40: En 41: En 42: 58: LAP 58: DAE 61: 64: June <1987> 68: PRE 76: FÖSICA DE PLASMA 87: enriquecimento isot¢pico 87: gases ionizados 87: centr¡fugas 87: plasma (f¡sica) 87: separa‡Æo de isotopos 88: isotopic enrichment 88: ionized gases 88: centrifuges 88: plasma (physics) 88: isotope separation 83: Higth rotational velocity and centrifugal isotopic separation of carbon in a vacuum-arc plasma centrifuge are preseted. Enrichments of up to 390 83: for Care meaasured at 6 cm radius with angular totation freqquencies in excess of 1.0X105 rad/s in a axial magnetic field of 0.12 T 91: FDB-20010821 92: FDB-MLR MFN: 9365 1: SID/SID 2: 8388 3: INPE-8388-PRE/4165 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 12: A reducao da camada de oz“nio: efeitos sobre o Brasil 14: 32-35 30: Engenharia Ambiental 31: 2 32: 7 40: Pt 41: Pt 42: 58: DGE 59: QUIAT 61: 64: jul. <1989> 68: PRE 76: GEOFISICA ESPACIAL 87: reducao de ozonio 87: cancer 87: ozometria 87: radiacao ultravioleta 88: ozone depletion 88: ozonometry 88: ultraviolet radiation 83: Medidas recentes usando v rias t‚cnicas, por grupos diferentes, mostram que a camada de oz“nio est  diminuindo, o que deve implicar em menor prote‡Æo contra a radia‡Æo ultravioleta. Embora varia‡äes maiores sejam esperadas para latitudes maiores, mostra-se atrav‚s de c lculos simples que nas latitudes equatoriais o efeito ser  tamb‚m significante, o que recomenda a governantes e … sociedade cient¡fica uma aten‡Æo cada vez maior para melhor estudar o fen“meno, principalmente no levantamento de dados sobre a incidˆncia de cƒncer de pele 91: FDB-20010823 92: FDB-MLR MFN: 9390 1: SID/SCD 2: 8408 3: INPE-8408-PRE/4185 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: Marinho, Edith Vasconcellos de Andrade 12: A concentracao de monoxido de carbono (CO)no ar como parƒmetro de pureza 14: 9-16 30: Revista Brasileira de Geof¡sica 31: 6 32: 1 40: Pt 41: Pt 42: 58: DGE 61: 64: <1988> 68: PRE 76: GEOFÖSICA ESPACIAL 87: ozonio 87: mon¢xido de carbono 87: sensores 87: polui‡Æo do ar 88: carbon monoxide 88: sensors 88: air pollution 88: ozone 83: Carbon monoxide (CO)is a natural atmospheric component, taking part in some important chemical cycles, especially regarding ozone. Combustion processes can add CO to the atmosphere, and in this case it may become an ozone precursor. Our objective is to determine quantitatively to what degree industrial centers can affect the atmosphere of natural ecosystems. INPE's ozone group has recently installed a CO sensor of great sensitivity, capable of detecting a few parts per billion of CO. Initial measurements were made with air samples from SÆo Jos‚ dos Campos, Cachoeira Paulista, Dutra Highway, and near a forest preserve in Campos do JordÆo, in the state of SÆo Paulo, and in Belim, in the state of Par . The largest concentrations were observed in SÆo Jos‚ dos Campos where in comparison to the forest preserve the concentrations are between 3 to 6 times larger. Surface concentrations are larger in the morning, decreasing towards the afternoon by dilution in the mixing layer MFN: 9439 1: SID/SCD 2: 8414 3: INPE-8414-PRE/4186 4: CEA 5: S 6: as 7: [07] 10: Tsurutani, B.T. 10: Gonzalez-Alarcon, Walter Demetrio 10: Tang, Frances 10: Syun, I. 10: Akasofu, I.Smith, Edward J. 12: Origin of interplanetary southward magnetic fields responsible for major magnetic storms near solar maximum (1978-1979) 14: 8519-8531 30: Journal of Geophysical Research 31: 93 32: A8 40: En 41: En 42: 59: GDE 61: 64: Aug. <1988> 68: PRE 90: b 76: GEOFÖSICA ESPACIAL 87: southward interplanet rio 87: campos magn‚ticos interplanat‚rios 87: tempestades magn‚ticas 87: origens 88: interplanetary southward 88: interplanetary magnetic field 88: magnetic storms 88: origins 83: The origins of the interplanetary southward Bz. which cause the 10 major (Dst < - 100 nT)magnetic storms detected during the 500 days of study (August 16, 1978, to December 28, 1979)of the Gonzalez and Tsurutani (1987)work are examined in detail. A full complement of ISEE 3 plasma and field data, an 11 -station AE index and the near-equatorial Dst. index, are used in this analysis. It is found that the origins of the interplanetary southward Bz. events are quite varied. If it is defined that the Bz event which leads to Dst < - 100 nT is "the cause" of the storm, then one of the storm intensifications is caused by shock compression of preexisting southward interplanetary magnetic fields, four (or five)are related to driver gas magnetic fields, one (or two)are caused by shocked kinky heliospheric current sheets, two (or three)by turbulence or waves behind interplanetary shocks, and one possibly by draped fields associated with a noncompressive density enhancement event (without a shock or a high-speed stream). In simplistic terms, four (or five)storms are caused by driver gas fields, four by shocked (sheath)fields, and one possibly by high-intensity draped fields. In actuality, many of the interplanetary southward B. and corresponding magnetic storm (Dst)structures are more complex than stated above. At least four of the interplanetary events have both major sheath and driver gas southward Bz. events. In two storms, sheath southward Bz features led to Dst reaching levels of -90 nT prior to driver gas southward Bz features; the following driver gas fields then caused Dst to exceed our storm criteria of - 100 nT. In two other cases, sheath Bz features led to magnetic storm onsets (Dst < - 100 nT); the following driver gas southward Bz. features cause further storm intensifications. The above magnetic storms therefore displayed two-stage development characteristics. The results of this study indicate the equal importance of both sheath fields or draped fields and driver gas fields for the generation of major geomagnetic storms. Because of the importance of the sheath fields the intensity and duration of geomagnetic storms cannot be predicted by solar observations of active regions alone. Tang et al. (1988)will address this topic in detail 91: FDB-20011107 92: FDB-MLR MFN: 9440 1: SID/SCD 2: 8419 3: INPE-8419-PRE/4191 4: CEA 5: S 6: as 7: [07] 10: Fejer, B.G. 10: Paula, Eurico Rodrigues de 10: Batista, Inez Staciarini 10: Bonelli, E. 10: Woodman, R.F. 12: Equatorial f Region vertical plasma drifs during solar maxima 14: 12049-12054 30: Journal of Geophysical Research 31: 94 32: A9 40: En 41: En 42: 59: DAE 61: 64: Sept. <1989> 68: PRE 90: b 76: AERONOMIA 87: regiÆo F 87: radar de dispersÆo contradit¢ria 87: medi‡äes 87: fluxo solar 87: deriva de plasma 87: atividade solar 88: F region 88: measurements 88: incoherent scatter radar 88: solar flux 88: plasma drift 88: solar activity 83: Incoherent scatter radar measurements at Jicamarca are used to study the effects of large solar fluxes and magnetic activity on the F region vertical plasma drifts. The average drifts from the two last solar maxima are almost identical except in the late afternoon-early evening sector where their variations with solar flux and magnetic activity are strongly season dependent. The average evening winter (May-August)drifts appear to remain almost constant after a certain solar flux level is reached but increase with magnetic activity. The equinoctial evening drifts increase systematically with solar-flux but decrease with magnetic activity. Very large prereversal enhancement velocities, up to about 80 m/s, were often observed during the 1978-1981 equinoctial periods when the solar flux was very high. Comparison of incoherent scatter radar drifts with vertical velocities inferred from ionosonde observations indicate that the latter technique substantially underestimates the plasma drifts during periods of large solar fluxes except during winter 91: FDB-20011107 92: FDB-MLR MFN: 9441 1: SID/SCD 2: 8418 3: INPE-8418-PRE/4190 4: CEA 5: S 6: as 7: [07] 10: Pinto, Iara Regina Cardoso de Almeida 10: Pinto Jr., Osmar 10: Gonzalez-Alarcon, Walte Demetrio 12: Some aspects of stratospheric electric fields due to a constant convection current density-charge model of cloud structure 14: 9979-9982 30: Journal of Geophysical Research 31: 94 32: D7 40: En 41: En 42: 59: DGE 61: 64: July <1989> 68: PRE 90: b 76: GEOFÖSICA ESPACIAL 87: campos el‚tricos 87: medi‡Æo 87: instrumentos embarcados em balÆo 87: corrente de transmissÆo 87: canstante 88: constant 88: convection currents 88: eletric field 88: stratosphere 88: measurements 88: balloon borne instrumens 83: This brief report presents the results of the numeric computation of the electric field due to positive polarity clouds at balloon altitudes with a constant convection current density (CC)model of charge distribution. For reasonable values of the parameters involved, we show that at horizontal distances larger than approximately 20 km from the top of the cloud, the CC model can give vertical electric fields with similar large magnitudes (volts per meter)in both directions in the stratosphere. We claim that even this simple charge distribution model may explain some "unusual" observed signatures during several events of balloon-borne electric field measurements reported in the literature, without the necessity to search for more complicated charge distribution models. Another aspect found in association with the CC model is that the ratio between the vertical and horizontal electric fields increases when the balloon drifts away to the cloud. As far as we know, this latter aspect has not been observed in balloon electric field measurements as yet. We suggest that measurements associated with large storms (with tens to hundreds of Coulombs)should be useful for identifying this aspect of the electric field measurements 91: FDB-20011107 92: FDB-MLR MFN: 9442 1: SID/SCD 2: 8417 3: INPE-8417-PRE/4189 4: CEA 5: S 6: as 7: [07] 10: Batista, Paulo Prado 10: Clemesha, Robert Barclay 11: Batista, Inez Staciarini 11: Simonich, Dale Martin 12: Characteristics of the sporadic sodium layers observed at 23 0 s 14: 15349-15358 30: Journal of Geophysical Research 31: 94 32: A11 40: En 41: En 42: 59: DAE 61: 64: Nov. <1989> 68: PRE 90: b 76: AERONOMIA 87: sodio 87: mesosfera 87: medi‡Æo 87: regiÆo E 87: chuvas de meteoros 88: sodium 88: mesosphere 88: measurements 88: E region 88: meteoroid scuwers 83: The mesospheric sodium data, obtained between 1975 and 1987 at SÆo Jos‚ dos Campos (23 degree S,46 degree W)with a laser radar, have been analyzed in order to identify the appearance of thin sporadic sodium layers. In this search, a total of 65 events were identified. The average height of the peaks is 95.0 km. The ratio of the maximum peak density to the average layer density is normally 2.5 to 3.0, but values as high as 7 have been observed in the most outstanding cases. The events last from a few minutes to several hours, although durations of 1-2 hours are more typical. The events occur more often during periods of large meteor showers, especially in August. The diurnal variation shows an increasing number of observed peaks from 1500 LT to midnight and remains almost constant from midnight to 0600 LT. In 52 out of 54 days for which sodium and ionosonde data are available there was an sporadic E layer nearly coincident with the sodium cloud. The coincidence is good for short-lived sporadic layers, but a substantial increase in sporadic E critical and blanketing frequencies normally precedes the long-lasting and broader ones. These results are compatible with the suggestion that the enhanced layers are produced by the wind shear distortion of sodium clouds originating in meteor deposition, but we cannot rule out the possibility of an ion conversion mechanism 91: FDB-20011107 92: FDB-MLR MFN: 9444 1: SID/SCD 2: 8420 3: INPE-8420-PRE/4192 4: CEA 5: S 6: as 7: [07] 10: Browell, E.V. 10: Gregory, G.L 10: Harriss, R.C. 11: Kirchhoff, Volker Walter Johann Heinrich 12: Tropospheric Ozone and Aerosol Distributions, Across the Amazon Basin 14: 1431-1451 30: Journal of Geophysical Research 31: 93 32: D2 40: En 41: En 42: 59: GDE 61: 64: Feb. <1988> 68: PRE 90: b 76: GEOFÖSICA ESPACIAL 87: troposfera 87: oz“nio 87: aerosois 87: distribui‡Æo 88: troposphere 88: ozone 88: aerosols 88: distribution 82: 83: Ozone and aerosol distributions were measured during July-August 1985 over the tropical rain forest of Brazil as part of the NASA Global Tropospheric Experiment to study the Amazon boundary layer. Remote and in situ measurements of O3 and aerosols were made from a NASA Electra aircraft on several long-range flights spanning different areas between Tabatinga and Belem, Brazil. Continuous O3 distributions were obtained between the aircraft altitude and the ground with an airborne differential absorption lidar (DIAL)system. Aerosol distributions were also continuously measured above and below the aircraft with the DIAL system. In Situ O3 measurements were made on the aircraft and from ground-launched ozonesondes at Manaus and Natal. Large-scale variations in the vertical and horizontal distributions of O3 and aerosols were observed on nearly all flights over the Amazon Basin, with O3 exceeding 50 parts per billion by volume (ppbv)in some regions. Both positive and negative correlations were observed between O3 mixing ratios and aerosol concentrations. In nearly all cases, when O3 and aerosols were negatively correlated, this represented clean, midtropospheric air, and when they were positively correlated, the air mass had undergone photochemical O3 production as a result of biomass burning. A 59 83: increase in the planetary boundary layer (PBL)O3 level was observed between the initial Manaus-Belem flights on July 23-24, 1985 and the later flights on August 8-9, 1985. This was attributed to the increase in biomass burning near the Rio Amazonas and its tributaries and in savannah regions south of the Amazon Basin. Flights to the west of Manaus measured enhanced O3 and aerosol levels near the Rio Solimäes, while the area sampled upwind of the river exhibited lower O3 levels. This was explained by the increased incidence of biomass burning near the river. This paper also examines the variability of the trade wind inversion (TWI)height across the Amazon Basin and the influence of O3.levels above the TWI on the budget of, O3 in the PBL. Measurements reported for the early dry -season characterize the background distribution of O3 and aerosols in the PBL prior to the onset of extensive biomass burning. These data provide the basis for a basin-scale estimate of photochemical O3 production from biomass-burning emissions 91: FDB-20011107 92: FDB-MLR MFN: 9445 1: SID/SCD 2: 8421 3: INPE-8421-PRE/4193 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: Browell, E.V. 10: Gregory, G.L 12: Ozone measurements in the troposphere of an amazonian rain forest environment 14: 15850-15860 30: Journal of Geophysical Research 31: 93 32: D12 40: En 41: En 42: 59: GDE 61: 64: Dez. <1988> 68: PRE 90: b 76: GEOFÖSICA ESPACIAL 87: ozonio 87: medi‡Æo 87: florestas tropicais 87: troposfera 88: ozone 88: measuremets 88: rain forests 88: troposphere 82: 83: Ozone concentration profiles from the ground to above the stratospheric peak have been obtained, for the first time, in an equatorial rain forest environment near Manaus (3 degree S 60 degree W). We have described in detail the average ozone profile in the troposphere, the observed variations, and a major biomass-burning event that occurred near the end of the experiment. The average ozone mixing ratio at 1000 mbar was 13 parts per billion by volume (ppbv), increasing to 45 ppbv at 500 mbar. From 500 mbar upward, in the free troposphere, the mixing ratio stays roughly constant. The peak 03 concentration occurs at 20 mbar (26.6 km)reaching 4.4 x 1012 molecules cm-3. The values in the troposphere are much lower than results from the low-latitude Atlantic coast. The average gradient below 1000 m in Manaus is twice as large. The diurnal variation is strongest near the surface, decreasing upward. Close to the surface the ozone gradient is largest in the early morning, decreasing toward noon. A significant pollution (burning)event, near the end of the experiment, was responsible for large changes in ozone concentrations, which increased first in the lower troposphere but eventually reached the free troposphere as well 91: FDB-20011107 92: FDB-MLR MFN: 9446 1: SID/SCD 2: 8422 3: INPE-8422-PRE/4194 4: CEA 5: S 6: as 7: [07] 10: Simonich, Dale Martim 10: Clemesha, Barclay Robert 12: Decay of the el Chichon aerosol cloud at 23 degree S 14: 12803-12806 30: Journal of Geophysical Research 31: 94 32: D10 40: En 41: En 42: 59: DAE 61: 64: Sept. <1989> 68: PRE 90: b 76: AERONOMIA 87: aquecimento estratosf‚rico 87: circula‡Æo atmosf‚rica 87: aerosois 87: efeitos atmosf‚ricos 88: stratospheric warming 88: atmospheric circulation 88: aerosols 88: atmospheric effects 83: We present the stratospheric backscatter profiles obtained by the Sao Jos‚ dos Campos lidar (23 degree S, 46 degree W)during the period of the persistence of the El Chichon aerosol cloud (July 1982 to November 1985). The backscatter coefficient integrated from 17 to 27 km shows an overall 1/e decay rate of about 13 months, but the decay was considerably more irregular than that observed at other sites. In June and July of 1984 there occurred a significant secondary maximum in the integrated backscatter. It is not clear whether this peak was caused by circulation effects or whether it was the result of the injection of new material by a series of moderate equatorial eruptions during the first half of 1984 91: FDB-20011107 92: FDB-MLR MFN: 9447 1: SID/SCD 2: 8423 3: INPE-8423-PRE/4195 4: CEA 5: S 6: as 7: [07] 10: Klobuchar, J.A. 10: Abdu, Mangalathyil Ali 12: Equatorial Ionospheric Irregularities Produced by the Brazilian Ionospheric Modification Experiment (BIME) 14: 2721-2736 30: Journal of Geophysical Research 31: 94 32: A3 40: En 41: En 42: 58: DAE 61: 64: Mar. <1989> 68: PRE 90: b 76: AERONOMIA 87: bolhas de plasma 87: modulos de libera‡Æo qu¡mica 87: regiÆo F2 87: irregularidades 87: ionosf‚ricos 88: plasma bubbles 88: chemical release modules 88: F2 region 88: irregularities 88: ionospherics 83: On two separate evenings in September 1982, rockets were launched into the bottomside equatorial F2 region off the coast of Natal, Brazil, to inject chemicals, consisting of mainly H20 and C02, to create a hole in ionization, The chemicals were injected near the height where the density gradient was steepest, and at a time when the F2 region was rising rapidly, to see whether plasma bubble irregularities could be generated from instabilities triggered by the ionization hole. On both occasions, hole-induced depletions in total electron content (TEC)of more than 10 16 el/M2 were observed over horizontal distances of at least 60 km from the chemical injection point. The eastward drifts of these artificial depletions were observed by the time difference in the TEC features observed at various TEC monitoring stations, and from the changing range of oblique ionosonde echoes observed by an ionosonde located 300 km magnetically east of the chemical release point. Their subsequent evolution into plasma bubble irregularities was demonstrated from the observations of spread F echoes, strong-amplitude scintillation, and TEC depletion at distances of from 300 to 500 km eastward of the release points. The fact that similar behavior of the ionosphere was observed during the evenings of both rocket chemical releases, and on no other nights of the campaign, is strong evidence of successful artificial generation of bubble irregularities by chemical injection into the bottomside F2 region 91: FDB-20011107 92: FDB-MLR MFN: 9465 1: SID/SCD 2: 8494 3: INPE-8494-PRE/4248 4: FISMAT 5: MC 6: am 7: [07] 10: GuimarÆes, A.L.S 12: Thrust ballance for a micro thruster test stand 14: 235 38: v.3 Space Science and Tchnology and Plasma Physics 40: En 41: En 42: 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: SÆo Jos‚ dos Campos 58: LAS 61: 64: <1988> 68: PRE 90: b 76: FISICA DE MATERIAIS 87: equil¡brio 87: microimpulso 87: rea‡Æo a jato 87: impulso 87: controle de atitude de sat‚lite 88: balance 88: microthrust 88: jet thrust 88: impulses 88: satellite attitude control 83: The impulse is an important parameter for the design and operation of satellite orbit and attitude control systems that use reaction jets. In controlling the motion of the satellite, it is necessary to know what impulse at given jet will deliver before beginning any maneuver so that it can be accomplished with a minimum consumption of fuel: fuel being the critical item that determines the useful life of the satellite. One of the manners used to determine the impulse of a thruster is to experimentally measure the thrust and integrate it over a certain time interval. However, in satellite control systems the jets develop a low thrust on the order of 0.5 to 20.0N, and commonly operate in a pulsed mode with cycle times around 50ms. This low thrust and short cycle time complicates the measurement due to interference from the mechanical dynamic response characteristics of the thrust balance. Here, this problem is discussed by presenting a dynamic analysis and actual performance of a thrust balance intended for use in the range of 4 to 100N and with pulse cycle times of 50ms. In what follows, the balance is first described, a mathematical analysis of its dynamic behavior is completed, and the results are compared with some experimental measurements 91: FDB-20011107 92: FDB-MLR MFN: 9590 1: 1SID/SCD 2: 8615 3: INPE-8615-PRE/4349 4: CEA 5: S 6: as 7: [07] 10: Coziol, Roger 10: Carvalho, Reinaldo R. de 10: Capelato, Hugo Vicente 10: Ribeiro, Andr‚ L. B 12: The evolution of galaxies in compact groups 14: 545-556 30: Astrophysical Journal 31: 506 40: En 41: En 42: 58: DAS 61: 64: Oct. <1988> 68: PRE 90: b 76: ASTROFÖSICA 87: gal xias 87: abundƒncia 87: gal xias ativas 87: agrupamentos gal ticos 87: evolu‡Æo gal tica 88: galaxies 88: abundance 88: active galaxies 88: galactic clusters 88: starburst galaxies 88: galactic evolution 83: We present an analysis of the spectra of 62 galaxies in 15 compact groups. The galaxies are classified into four activity classes: galaxies without emission, starburst galaxies, luminous AGNs (Seyfert and LINERs), and low-luminosity AGNs (LLAGNs). The star formation in the Hickson compact group (HCG)starbursts is more intense than in normal spirals, but comparable to that observed in starburst-nucleus galaxies (SBNGs)in the field. In general, the HCG starbursts have mean solar gas metallicity and do not follow the metallicity-luminosity relation traced by the early-type SBNGs in the field, suggesting that most of them are late-type SBNGs. This morphology preference, coupled with the observation that the HCG starbursts are predominantly located in the halos of the groups, is consistent with the idea that compact groups are embedded in sparser structures. The stellar metallicities of the nonstarburst galaxies are comparable to those observed in normal galaxies with similar morphologies, but are relatively high for their luminosities. In these galaxies, the metal absorption line equivalent widths are slightly narrower than normal, while the Balmer absorption lines are relatively strong. All these observations suggest the presence of a population of intermediate-age stars. These galaxies could be poststarburst, but at a very advanced stage of evolution, the last bursts having happened more than 2 Gyr in the past. Our observations support a scenario in which the cores of the groups are slowly collapsing evolved systems embedded in more extended structures. In the cores of the groups, the interactions were more frequent and the galaxies evolved at a more rapid rate than in their halos MFN: 9625 1: SID/SCD 2: 8667 3: INPE-8667-PRE/4403 4: CEA 5: S 6: as 7: [07] 10: Clemesha, Barclay Robert 10: Simonich, D.M. 12: Comments on a paper entitled sudden neutral "sodium layers: a strong link to sporadic e layers" by U.Von Zahn and T.L. Hansen 14: 145-146 30: Journal Atmospheric and Terrestrial Physics 31: 51 32: 2 40: En 41: En 42: 58: DAE 61: 64: Feb. <1989> 68: PRE 76: AERONOMIA 87: precipita‡Æo de part¡cula 87: radar optico 87: chuvas de meteoritos 88: particle precipitation 88: optical radar 88: meteoroid showers 83: Observations of thin, enhanced, layers within the atmospheric sodium layer have recently been interpreted in the literature as resulting from the liberation of sodium from dust particles by the effect of auroral particle precipitation. In this note we point out that one of the assumptions on which the argument for this mechanism is based is incorrect, and that direct deposition of meteoric material is more likely to be the cause of the observed enhancements 91: FDB-20000305 92: FDB-MLR MFN: 9662 1: SID/SCD 2: 8649 3: INPE-8649-PRE/4384 4: CEA 5: S 6: as 7: [07] 10: Phillips, M.M. 10: Phillips, A.C. 10: heathcote, S.R. 10: Blanco, V.M. 10: Geisler, D. 10: Hamilton, D. 10: Suntzeff, N.B. 10: Jablonski, Francisco Jos‚ 10: Steiner, JoÆo Envagelista 10: Cowley, A.P. 10: Schmidtke, P. 10: Wyckoff, S. 10: Hutchings, J.B. 10: Tonry, J. 10: Strauss, M.A. 10: Thorstensen, J.R. 10: Honey, W. 10: Maza, J. 10: Ruiz, M.T. 10: Landolt, A.U. 10: Uomoto, D. A. 10: Rich, R.M. 10: Grindlay, J. 10: Cohn, H. 10: Smith, H.A. 10: Lutz, J.H. 10: Lavery, R.J. 12: The Type Ia supernova 1986G in NGC 5128: optical photometry and spectro 14: 592-605 30: Publications of the Astronomical Society of the Pacific 31: 99 40: En 41: En 42: 58: DAS 61: 64: July<1987> 68: PRE 90: b 76: ASTROFÖSICA 87: supernova 87: fotometria 87: spectrofotometria 88: supernovae 88: photometry 88: spectrophotometry 83: Optical light curves and spectra of the Type Ia supernova 1986G in NGC 5128 (Centaurus A)are presented. SN 1986G was discovered approximately one week before maximum light. The initial rate of decline of the B light curve was remarkably fast and characteristic of the infrequently observed Pskovskii photometric class B = 12. Although the spectral evolution closely resembled that of the more common "slower" photometric classes of Type Ia supernovae, subtle differences in the maximum-light spectra were detected. The expansion velocity of the photosphere of SN 1986G decreased rapidly at early phases, suggesting that the outer-envelope density gradient was less steep than in supernovae with smaller values of B . SN 1986G appears to have been heavily obscured (E (B - V)= 0.90 t 0. 10)by the dust lane of NGC 5128. This circumstance accounts for the strong interstellar-absorption lines of Ca II H and K and Na I D observed in the spectra as well as for several weaker absorption features that we identify with the diffuse interstellar bands. SN 1986G provides graphic confirmation of the existence of intrinsic differences in the optical light curves and spectroscopic properties of TypeIla supernovae. Consequently, these objects must be used with considerable caution as cosmological standard candles, On the basis of the very close resemblance of SN 1986G to SN 19711 in NGC 5055, we derive a relative distance of DNGC528/ DNGC50,= 0.39 +- 0.04. Further distance estimates are hampered due to the lack of other well-observed Type Ia supernovae with BP = 12 92: FBD-20020311 100: FDB-MLR MFN: 9745 1: SID/SCD 2: 8851 3: INPE-8851-PRE/4568 4: CEA 5: MC 6: am 7: [07] 10: Gonzalez Alarcon, Walter Dem‚trio 10: Pinto Jr., Osmar 10: Dutra, Severino L. Guimaraes 10: Takahashi, Hisao 12: Measurements of wave-particle interactions at South Atlantic magnetic anomaly on board a brazilian geophysical satellite 14: 209-212 21: v.3 Space Science and Technology and Plasma Physics 40: En 41: En 42: 53: Japan Brazilian Symposium on Science and Tecnology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 57: BR 58: DGE 61: 64: <1988> 68: PRE 90: b 76: GEOFÖSICA ESPACIAL 87: anomalias magn‚ticas 87: medi‡Æo 87: intera‡äes particula onda 87: detectores de raios x 87: precipita‡Æo de el‚trons 88: magnetic anomalies 88: measurement 88: wave particle interactions 88: x ray detectors 88: eletron precipitation 83: A summary of the proposal for measurements of VLF wave-particle interactions, expected to occur at the South Atlantic magnetic anomaly, to be carried out on board a Brazilian geophysical satellite, will be presented. The expected domain of such interactions refers to electromagnetic VLF waves and to energetic-relativistic inner belt electrons, pitch angle diffusing into the atmosphere via cyclotron resonances. The detectors involve a tri-axial search coil magnetometer and a surface barrier silicon telescope. A modified and preliminary version of this proposed experiment will be carried out on board long duration balloon flights, well before the beginning of the intended satellite measurements. For the balloon flights the particle detector will be replaced by an x-ray detector, which can also monitor parameters related to the electron precipitation 91: FDB-20020423 92: FDB-MLR MFN: 9768 1: SID/SCD 2: 8844 3: INPE-8844-PRE/4561 4: FISPLASMA 5: MC 6: am 7: [07] 10: Chian, Abraham Chian Long 12: Application of free-electron laseers 14: 188-198 18: Proceedings 40: En 41: En 42: 53: Workshop Syncrotron Light: Applications and Related Instrumentation, 2 54: 4-8 Sept. <1989> 56: Campinas 58: LAP 61: 64: <1989> 68: PRE 76: FÖSICA DE PLASMA 83: Free-electron lasers are tunable sources of coherent radiation from mm to UV wavelengths. Potential applications of free-electron lasers in magnetic and inertial confinement fusion, particle accelerators, energy transmission in space, and cosmic radiation are discussed. Saturation processes such as wavebreaking, particle trapping, and pump depletion that may determine the efficiency of free-electron lasers are reviewed MFN: 9781 1: SID/SCD 2: 8852 3: INPE-8852-PRE/4569 4: CEA 5: MC 6: am 7: [07] 10: Rao, Kalvala Ramanuja 10: Pardo, Phenix 10: Valverde Ramirez, Maria Cleofe 10: Trivedi, Nalin Babulal 10: Costa, Jos‚ Marques 12: Radiowave absrption measurements near geomanetic anmaly region during a mafgnetic storm 14: 280-283 21: v.3 Space Science and Tchnology and Plasma Physics 40: EnEn 41: EnEn 42: 53: Japan Brazilian Symposium on Science Tecnology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 58: DGE 61: 64: <1998> 68: PRE 76: GEOFISICA ESPACIAL 83: The morphological studies of ionospheric D region absorption in midlatitudes showed that the absorption of LF,MF and HF waves increases after the magnetic storm (Lauter, 1958)This midlatitude absorption was clearely sepearated from auroral absorption zone and indicated poleward and equatorward boundaries, the poleward boundary being at L= 2.6-3.5 and equatorward boundary near L= 2 at the time when the recovery phase ohanged from its rapid to slower phase (Wagner and Banta, 1983). Lauter and Knuth (1950)found that there was a permRnant extra ionization lasting upto a fortnight after the onset of the storm. which could be observed during the night, the in rpaspd absorption being maintained by photodetachment processes from negative ions by the precipitating high energy particle Flux No observations are available at low latitudes, particulariv in the Geomagnetic Anomaly Region (GAR), about the change in absorption after a magnetic storm. In the present work. the nbsorption of HF and MF radiowaves after a magnetic storm is studied MFN: 9782 1: SID/SCD 2: 8853 3: INPE-8853-PRE/4570 4: CEA 5: MC 6: am 7: [07] 10: Takahashi, Hisao 10: Clemesha, B.R. 10: Batista, Paulo Prado 10: Sahai, Yogeshwar 12: Upper atmosphere temperature measurements using an airglow photometer on board a rocket 14: 296-300 21: v.3 Space Science and Tchnology and Plasma Physics 40: En 41: En 42: 53: Japan Brazill Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 58: DAE 58: DGE 61: 64: <1996> 68: PRE 76: AERONOMIA 87: alta atmosfera 87: temperatura 87: medi‡Æo no local 87: aeroluminescˆncia 87: fot“metros 87: instrumentos embarcados em foguetes 88: upper atmosphere 88: temperature 88: in situ measurement 88: airglow 88: rocket borne instrumnets 83: One, of the most useful techniques to observe neutral atmosphere temperature in the mesopause region, between 80 to 100 km, is to measure the molecular rotational temperature of the oxygen emission, O2 (0,0)atmospheric band at 762.0 an and the OH vibration-rotation band, for example OH(8,3)band at 732.0 nm. Ground based observations in these emissions have been carriedout from various stations around the globe and their nocturnal and seasonal variations have been studied. The ground-based observations, however, can not provide information regarding the height of the emission layer. Photometers on board a rocket, measuring in situ the emission spectra makes it possible to observe the height profile of the emissions and their rotational temperatures. The scientific background for carrying out these measurements from an equatorial and/or mid-latitude region and instrumentation to be used will be discussed MFN: 9783 1: SID/SCD 2: 8854 3: INPE-8854-PRE/4571 4: CEA 5: MC 6: am 7: [07] 10: Sahai, Yogeshwar 10: Takahashi, Hisao 12: A review of airglow observations at equatorial and low-latitudes in the Brazilian sector 14: 290-295 21: v.3 Space Science and Tchnology and Plasma Physics 40: En 41: En 42: 53: Japan Brazill Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: Sao Jose dos Campos 58: DAE 58: DGE 61: 64: <1996> 68: PRE 76: AERONOMIA 87: aeroluminescˆncia 87: observa‡Æo 87: regiäes tropicais 87: alta atmosfera 87: distribui‡Æo espacial 87: composi‡Æo da atmosfera 88: airglow 88: observation 88: equatorial regions 88: tropical regions 88: upper atmosphere 88: spatial distribution 83: Airglow observations provide a convenient technique for sensing remotely the properties of the upper atmosphere. Simultaneous ground-based observations of several airglow emissions make it possible to determine the propagation of disturbances in the upper atmosphere, to reveal mutual correlations between atmospheric layers and to investigate the spatial time distribution of the atmospheric composition. In 1970, airglow observations were started at INPE. However, observations of several airglow emissions on a routine basis started in 1975 at Cachoeira Paulista (22.7 degreeS, 45. degreePW)' Brazil, which is situated inside, both the equatorial ionospheric anomaly and the South Atlantic magnetic anomaly MFN: 10069 1: SID/SCD 2: 9139 3: INPE-9139 -PRE/4812 4: ETES 5: S 6: as 7: [07] 10: Moraes, I.M. 10: Pilchowski, H.U. 10: Venkataraman, N.S 12: Electrostatic potential and density-estimation around an ionospheric satellite 30: Acta Astronautica 40: En 41: En 42: 58: DMC 61: 64: Apr. <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 83: This work presents the electrostatic potential distribution around a spherical ionospheric satellite by solving Poisson's equation through a finite difference method. The approximate numerical densities for ions and electrons are obtained as one solves the Boltzmann's equation by means of the characteristics method. It is shown that the use of a local planar approximation for the numerical electron density gives reasonably accurate results compared with the radial approximation, which has been used in former works MFN: 10279 1: SID/SCD 2: 9361 3: INPE-9361-PRE/5024 4: MET 5: S 6: as 7: [07] 10: Manzi, Antonio Ocimar 10: Lemes, Marco Antonio Maringolo 12: Um estudo objetivo de an lise meteorol¢gica e seu uso em previsÆo num‚rica 14: 302-303 30: Geociˆncias 31: 7 40: Pt 41: Pt 42: 58: DCM 61: 64: <1988> 68: PRE 76: ESTUDO DO TEMPO E DO CLIMA 87: previsÆo num‚rica 87: Centro de Modelagem Atmosf‚rica (CEMA) 83: Um esquema completo de previsÆo num‚rica foi implantado no Centro de Modelagem Atmosf‚rica (CEMA)do Departamento de Meteorologia do INPE/CNPq, o qual ‚ servido pelo sistema computacional CYBER-170/750, do Instituto de Estudos Avan‡ados (IEAv)no CTA/MAer. O esquema ‚ comlpleto por ser composto de dois programas prinicipais, um respons vel pela prepara‡Æo dos dados de entrada, e ou outro pela elabora‡Æo da previsÆo propriamente dita, que emprega um modelo barotr¢pico de equa‡äes primitivas e  rea limitada desenvolvido por LEMES et alii. O esquema de an lise objetiva, implantado no CEMA, ‚ uma adapta‡Æo do programa desenvolvido originalmente pelo Stanford Research Institute para o tratamento de informa‡äes de ventos medidos por aviäes. Este programa fonte, eleborado em linguagem FORTRAM IV, versÆo 2.1 do CDC, encontra-se devidamente documentado em Mancuso e Endlich 91: FDB-20021119 92: FDB-msms MFN: 10993 1: SID/SCD 4: ETES 5: MC 6: am 10: Perondi, Leonel Fernando 12: String design optimization of solar panels 38: (IAF Paper 88-212) 40: En 41: En 42: 53: Congress of the International Astronuatical Federation, 39 (IAF) 54: 8-15 Oct. <1983> 56: Bangalore 57: India 58: LAS 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: 8406 MFN: 11004 1: SID/SCD 4: ETES 5: MC 6: am 10: Martins Neto, Antonio Felix 12: Nonlinear desing of satellite attitude controllers 14: 42-46 53: International Conference on Intelligence Autonomous Control in Aerospace 54: Aug. <1995> 56: Beijing 57: China 61: 64: <1989> 68: PRE MFN: 11005 1: SID/SCD 4: COMB 5: MC 6: am 7: [07] 10: Salles, Carlos Eduardo Rolfsen 10: Gill, Walter 12: A simple methods for the selection of satellite propulsion systems 21: v.3 Space Science and Tchnology and Plasma Physics 40: En 41: En 42: 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 55: 19880000 56: Sao Jose dos Campos 57: BR 58: LCP 61: 64: <1988> 68: PRE 90: b 76: COMBUSTAO 87: combustÆo com aplica‡Æo em propulsÆo 91: FDB-19920226 92: FDB-MLR MFN: 11007 1: SID/SCD 4: ETES 5: MC 6: am 10: Marshall, Paulo Melo 12: Design and sensitivity analysis of round-rod interdigital band-pass filters 14: 679-685 53: International Microwave Symposium (SBMO) 54: Jul. <1989> 58: DMC 59: 506575 61: 64: <1989> 68: PRE MFN: 11010 1: SID/SCD 2: 4965 3: INPE-4965-PRE/1534 4: ETES 5: mc 6: am 10: Devloo, Philippe R.B. 10: Villalobos, Sonia M. Gomes de G. 12: Numerical simulation model of hydrazine attitude control thrusters 53: Brazilian Congress of Mechanical Engineering, 10 (COBEM) 54: 5-8 Dec. <1989> 56: Rio de Janeiro 58: DMC 61: 68: PRE 76: ENGNEHARIA E TECNOLOGIA ESPACIAL 88: simulation 88: numerical 88: thruster 91: 9108 MFN: 11012 1: SID/SCD 4: ETES 5: MC 6: am 10: Alves Filho, J.S.R. 10: Owen, D.R.J. 12: A multi-processor implementation for elastic plastic finite element calculation 40: En 41: En 42: 53: Conference in Computational Plasticity 54: Sept. <1989> 56: Barcelona 57: ES 58: DME 61: 64: <1989> 68: PRE 90: b 91: FDB-19930210 92: FDB-MD 101: D MFN: 11013 1: SID/SCD 4: ETES 5: MC 6: am 10: Andrade, C.A.M. 10: Andrade, A.M. 10: Fonseca, F.J. 10: Sanematsu, M.S. 10: Selingardi, M.L. 10: Bertolino, M.A. 10: Matos, J.D. 12: Attitude solar sensors for the brazilian satellites 53: Conference on Eletrical Drives 54: <1988> 56: Poiana Brasov 57: Romania 58: DEA 59: 506486 61: 64: <1988> 68: PRE MFN: 11027 1: SID/SCD 2: 9672 3: INPE-9672-PRE/5272 4: COMB 5: MC 6: am 7: [07] 10: Salles, Carlos Eduardo Rolfsen 12: Combustion instability cosntrol in solid propellants 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 Aug. <1988> 56: SÆo Jos‚ dos Campos 58: LCP 61: 64: <1988> 76: COMBUSTAO 87: combustÆo com aplica‡äes em propulsÆo 83: Since the beginning of man's exploration and utilization of outer space, many types of propulsion systems for space vehicles have been develop. In the past the major controlling factor in the choice of a propulsion was that of the technical capability on hand for designing and producing the system. Nowadays, however the propulsion engineer has at his disposal such a wide variety of materials and manufacturing processes that the proper Choice of a propulsion system for a given mission is not entirely clear. Here we present a simple method for the rapid determination of the beat system given a minimum knowledge of the mission requirements and the materials on hand 91: FDB19821020 MFN: 11031 1: SID/SCD 4: COMP 5: MC 6: am 10: ALVES FILHO,J.S.R. 10: OWEN,D.R.J. 10: MITVHELL, G.P. 12: Transputer based parallel processing solution techniques for finite element computational 53: International Conference on Applications of Transputers 54: Aug. <1989> 56: Liverpool 57: UK 58: LAC 59: 506222 61: 64: <1989> 68: PRE 91: 8709 MFN: 11132 1: SID/SCD 4: ETES 5: MC 6: am 7: [07] 10: Varotto, S.E.C. 12: Determina‡Æo da atitude de sat‚lites artificiais terrestres 18: Resumos 40: En 41: En 42: 53: C¢loquio Brasileiro de Dinƒmica Orbital, 3 54: nov. <1987> 56: µguas de Lind¢ia 57: BR 58: DMC 61: 64: <1987> 68: PRE 90: b 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: FSB-199001202 MFN: 11175 1: SID/SCD 4: ETES 5: MC 6: am 10: Orlando, Valcir 10: Ferraresi, V.A. 12: Controle de atitude de sat‚lites artificiais em trˆs eixos sem utiliza‡Æo das equa‡äes dinƒmicas do movimento 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Engenharia Mecƒnica, 10 (COBEM) 54: Dez. <1989> 56: Rio de Janeiro 57: BR 58: DMC 61: 64: <1998> 68: PRE 90: b 91: FDB-20011208 92: FDB-MLR MFN: 11176 1: SID/SCD 4: ETES 5: MC 6: am 10: Gandelman, Gilberto 10: Ribeiro, J.F. 12: Modelagem e estima‡Æo de parƒmetros em sensores inerciais 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Engenharia Mecƒnica, 10 (COBEM) 54: Dez. <1989> 56: Rio de Janeiro 57: BR 58: DMC 61: 64: <1998> 68: PRE 90: b 91: FDB-20011208 92: FDB-MLR MFN: 11177 1: SID/SCD 4: ETES 5: MC 6: am 10: Koreeda, J. 10: Hinckel, Jos‚ Nivaldo 12: C lculo das propriedades termodinƒmicas do ar a atlas temperaturas, incluindo excita‡Æo vibracional, dissicia‡Æo eioniza‡Æo 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Engenharia Mecƒnica, 10 (COBEM) 54: Dez. <1989> 56: Rio de Janeiro 57: BR 58: DMC 61: 64: <1998> 68: PRE 90: b 91: FDB-20011208 92: FDB-MLR MFN: 11178 1: SID/SCD 4: ETES 5: MC 6: am 10: Mantelli, M rcia Barbosa Henrique 10: Basto, J.E. 12: Determina‡Æo experimental da condutƒncia t‚cnica de juntas parafusadas encontradas em sat‚lites 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Engenharia Mecƒnica, 10 (COBEM) 54: Dez. <1989> 56: Rio de Janeiro 57: BR 58: DMC 61: 64: <1998> 68: PRE 90: b 91: FDB-20011208 92: FDB-MLR MFN: 11179 1: SID/SCD 4: ETES 5: MC 6: am 10: Ribeiro, Jos‚ Francisco 10: Ferraresi, V.A. 12: Estudos preliminares do problema de determina‡Æo e controle de atitude do sat‚lite de sensoriamento remoto brasileiro 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Engenharia Mecƒnica, 10 (COBEM) 54: Dez. <1989> 56: Rio de Janeiro 57: BR 58: DMC 61: 64: <1998> 68: PRE 90: b 91: FDB-20011208 92: FDB-MLR MFN: 11180 1: SID/SCD 4: ETES 5: MC 6: am 10: Ricci, M rio C‚sar 12: Projeto de um mecanismo espacial de baixa velocidde para movimenta‡Æo de pain‚is solares 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Engenharia Mecƒnica, 11 (COBEM) 54: Dez. <1987> 56: Florian¢polis 57: BR 58: DMC 61: 64: <1987> 68: PRE 90: b 91: FDB-20011208 92: FDB-MLR MFN: 11184 1: SID/SCD 2: 9643 3: INPE-9643-PRE/5258 4: ETES 5: MC 6: am 10: Cruz, Jos‚ Jaime 10: Geromel, Jos‚ Cl udio 12: An lise de estabilidade absoluta de reguladores LQ multivari veis atrav‚s do crit‚rio de Popov 14: 29-32 21: v.1 53: SBA Congresso Brasileiro de Automatica, 7 54: 15-19 ago. <1988> 56: SÆo Jos‚ dos Campos 57: BR 58: DMC 59: 201405 61: 64: <1988> 68: PRE 83: A estabilidade absoluta de reguladores lineares quadr ticos multivari veis invariantes no tempo discretos ‚ estudada no dom¡nio da freqˆncia. Uma forma generalizada de uma igualdade fundamental relacionando as matrizes de fun‡äes de transferˆncia diferen‡a de retorno e em malha aberta do regulador e o elemento b sico para a aplica‡Æo do Crit‚rio de Popov … analise. Essa forma generalizada tamb‚m estabelece uma condi‡Æo necess ria para que uma matriz de fun‡äes de transferˆncia em malha fechada seja resultante de um problema LQA frequency-domain approach to the absolute stabil¡ty analysis of multivariable time invariant discrete-time linear quadratic regulators is aecomplished. An imbedding form of a fundamental equality relating the return-difference and the open-loop matrix transfer functions is the key for the application of the Popov Criterion in the analysis. This imbedding form also establishes a necessary condition on a closed-loop matrix transfer function to have been obtained through a LQ design MFN: 11185 1: SID/SCD 2: 9642 3: INPE-9642-PRE/5257 4: ETES 5: MC 6: am 7: [07] 10: Gandelman, Gilberto 12: Simula‡Æo digital para verifica‡Æo da determina‡Æo da vertical, atrav‚s de giros e aceler“metos "strapdwon" 14: 1027-1031 21: v.2 40: Pt 41: Pt 41: En 53: Congresso Brasileiro de Automatica, 7 54: 15-19 ago. <1988> 56: Sao Jose dos Campos 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 83: Neste trabalho ‚ verificada a viabilidade de determina‡Æo da vertical por interm‚dio de sensores inerciais "Strapdown". O sistema de medidas consiste em um giro do tipo "dry tuned", um "race gyro" e dois aceler“metros (Bar-Itzhack, 1985). Devido a erros de baixa freqˆncia do giro, o erro na determina‡Æo do vertical cresce com o tempo. Para reduzir este erro, torna-se necess rio o uso de dois aceler“metros para uma medida adicional da vertical. Essas duas informa‡äes sÆo entÆo combinadas para a redu‡Æo simultƒnea dos erros de alta e baixa freqˆncia. O algoritmo de simula‡Æo digital do Sistema de medi‡äes ‚ apresentado, bem como o ajuste dos parƒmetros baseado no resultado das Simula‡äesDigital Simulation for the verification of the feasib¡lity of the determination of the vertical using strapdown ,vros and aecelerometers.In this work, the feasibility oœ the determination of the vertical using strapdown sensors is analysed. Tne measurement unir consists in a dry tuned gyro, a rate gyro and Lwo accelerometers (Bar ltzhack, 1985). Due to low frequency errors generated by the gyros, the error in the determination of the vertical grows with the time. In order to reduce this errors, it is necessary to use two aceelerometers for an aditional measurement or the vertical. This two information are blended, in order to reduce both low frequecy errors of the gyros and the high frequeney errors of the accelerometers. This paper presents the algorithm for the digital simulation of the IMU, as well as the parameter adjustmenis based on the simulation results 91: FDB-19930624 92: FDB-MDF 101: D MFN: 11186 1: SID/SCD 2: 9680 3: INPE-9680-PRE/5279 4: ETES 5: MC 6: am 7: [07] 10: Gandelman, Gilberto 10: Merhav, Shmuel 12: Sistema de controle para um simulador dinƒmico utilizando a t‚cnica do modelo inverso 14: 1032-1037 21: v.2 40: Pt 41: Pt 41: En 53: Congresso Brasileiro de Automatica, 7 54: 15-19 ago. <1988> 56: Sao Jose dos Campos 57: BR 58: LAC 61: 64: <1988> 68: PRE 90: b 76: ENGENAHRIA ETECNOLOGIA ESPACIAL 87: simulador 87: equa‡äes diferenciais nÆo linear 88: simulator 88: system modelling 88: simulation 88: inverse model 88: control actuators 83: Neste trabalho, o projeto do sistema de controle para um simulador dinƒmico com seis graus dfe liberdade, em constru‡Æo no Laborat¢rio de Controle de V“o, Technion, LIT, ‚ descrito. Os graus de liberdade do simulador sÆo os ƒngulos de rolamento, arfagem e guinada, e os movimentos translat¢rios nas 3 dire‡äes inerciais . O simulador ‚ modelado atrav‚s de um sistema de equa‡äes diferenciais nÆo lineares contendo um forte acoplamento entre as vari veis. As t‚cnicas convencionais para o desacoplamento das vari veis, atrav‚s de controladores lineares, nÆo apresentam um desempenho satisfat¢rio. O sistema de controle proposto, nÆo linear , ‚ baseado no modelo inverso do sistema, ‚ capaz de reduir o acoplamento e as nÆo linearidades a n¡veis satisfat¢rios na condi‡Æo de que o comando para o simulador se encontra na  rea delineada pelo envelope de desempenho dos motores. O balanceamento est tico , para compensar o peso da cabine, ‚ realizado por um controlador separado. Um controlador do tipo PID, utilizando realimenta‡Æo atrav‚s de medidas de velocidade e deslocamento dos atuadores ‚ necess rio, para corrigir desvios dos parƒmetros nominais do sistema. O sistema de controle ‚ testado atrav‚s de simula‡äes digitais. In this work, the design of the control system for a six-degree-of-freedom simulator under construction at the Flight Control Laboratory , Technion, LIT, is described. The D.O .F. of the simulator are angular roll, pitch an yaw motions and translatory sway, surge and heave motions. The simulator motion is described by a set of non- linear differential equations with strong coupling between the output variables. Conventional techniques for the decoupling by linear controllers, are not satisfactory for this kind of system. The proposed non-linear control system based on an inverse system model, can reduce the coupling and the non-linearities to satisfactory levels, when the input to the simulator is within the weight of the simulator, is achieved by a separate controller . A PID controller using position and velocity feedback is also required in order to correct deviations from the nominal set of system parameters, defined by the inverse model. The control system is tested by digital simulations 91: FDB-19930624 92: FDB-MDF 101: D MFN: 11191 1: SID/SCD 4: ETES 5: MC 6: am 10: Cividanes, Lucio Baptista Trannin 10: Lacava, J.C.S. 12: C lculo da densidade de corrente em antenas de microlinhas utilizando o m‚todo dos momentos 53: CONGRESSO NACIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 12 54: set. <1989> 56: SÆo Jos‚ do Rio Preto 58: DEA 59: 60710X 61: 64: <1989> 68: PRE 91: 8709 MFN: 11192 1: SID/SCD 2: 9740 3: INPE-9740-PRE/5335 4: ETES 5: MC 6: am 10: Lopes, Roberto Vieira F. 10: Kuga, H‚lio Koiti 12: Estima‡Æo estat¡stica de ¢rbita utilizando o sitema de posicionamento global (GPS) 14: 481-486 21: v.1 53: CONGRESSO NACIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 10 54: 21-25 set. <1987> 56: Gramado 58: DMC 59: 60710X 61: 64: <1987> 68: PRE 87: Sistema de Posicionamento Global 87: GPS 87: determina‡Æo de ¢rbita 87: sat‚lites artificiais 88: Global Positioning System 83: 0 Sistema de Posicionamento Global ("Global Positioning System"- GPS)‚ uma constela‡Æo de 18 sat‚lites artificiais cujo prop¢sito ‚ prover pontos de referˆncia para a determina‡Æo da posi‡Æo e velocidade de ve¡culos espaciais em qualquer ponto ao redor da Terra . A grande vantagem trazida por esse sistema na determina‡Æo de ¢rbita de sat‚lites ‚ que ele garante observa‡äes redundantes o suficiente para determinar a posi‡Æo e velocidade sem o auxilio de modelos dinƒmicos. Usualmente utilizam-se medidas simultƒneas de alcance e taxa de varia‡Æo de alcance em rela‡Æo a trˆs-sat‚lites do GPS para determinar a ¢rbita . Um quarto sat‚lite pode ser inclu¡do para sincronizar o rel¢gio do sat‚lite usu rio com os do GPS. Recentemente os autores apresentaram um m‚todo do tipo m¡nimos quadrados para estima‡Æo est tica de ¢rbita considerando n sat‚lites do GPS. Em seguida tratou-se o caso estendido que inclui a sincroniza‡Æo do rel¢gio de bordo. 0 objetivo deste trabalho ‚ divulgar os resultados obtidos e enfatizar algumas propriedades estat¡sticas do m‚todo 91: 8709 MFN: 11211 1: SID/SCD 4: ETES 5: MC 6: am 7: [07] 10: Fleury, Agenor de Toledo 10: Ribeiro, J.F. 12: Sensores inerciais: revisÆo cr¡tica, tendˆncias e necessidades na  rea aerospacial 40: En 41: En 42: 53: International on Dynamics Problems in Mechanics, 3 (DINAME)/Simp¢sio Sobre Problemas Dinƒmicos da Mecƒnica 54: 01-04 Aug. <1989> 56: µguas de SÆo Pedro 57: BR 58: DMC 61: 64: <1989> 68: PRE 90: b 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: FSB-199401202 MFN: 11212 1: SID/SCD 4: ETES 5: MC 6: am 7: [07] 10: Gandelman, Gilberto 12: Modelagem e controle de um simulador de v“o dinƒmico com seis graus de liberdade 40: En 41: En 42: 53: International on Dynamics Problems in Mechanics, 3 (DINAME)/Simp¢sio Sobre Problemas Dinƒmicos da Mecƒnica 54: Aug. <1989> 56: µguas de SÆo Pedro 57: BR 58: DMC 61: 64: <1989> 68: PRE 90: b 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: FSB-199401202 MFN: 11221 1: SID/SCD 4: ETES 5: MC 6: am 10: Vaz, Celio Costa 12: An lise do desempenho t‚rmico de coletores solares planos 53: Semin rio Anual ADUNESP, 7 54: out. <1987> 58: DMC 59: 341509 61: 64: <1987> 68: PRE MFN: 11223 1: SID/SCD 4: ETES 5: MC 6: am 10: Vaz, Celio Costa 12: Planjamento do modelos de simula‡Æo de sistemas de aquecimento solar residencial 53: Semin rio Anual ADUNESP, 7 54: out. <1987> 58: DMC 59: 341509 61: 64: out. <1987> 68: PRE MFN: 11243 1: SID/SCD 4: ETES 5: MC 6: am 7: [07] 10: Lumini, F. 10: Silva, C.M. 10: Lacava, J.C. da S. 10: Richards, F.P. 12: An lise de antenas de microlinhas moldadas sobre superficies cil¡ndricas 40: En 41: En 42: 53: Simposio Brasileiro de Telecomunica‡äes, 7 54: 4-6 set. <1989> 56: Florian¢polis 57: BR 58: DMC 61: 64: <1989> 68: PRE 90: b 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: FDB-19950801 92: FDB-MLR MFN: 11272 1: SID/SCD 4: ETES 5: MC 6: am 10: Cividanes, Lucio Baptista Trannin 10: Araujo, R. 10: Lacava, J.C.S. 10: Rodrigues, P.J.C. 10: Araujo, R. 53: Simp¢sio Brasileiro de Telecomunica‡äe, 15 54: set. <1997> 56: Recife 58: DEA 59: 506575 61: 64: <1987> 68: PRE 91: 8807 MFN: 11276 1: SID/SCD 2: 9690 3: INPE-9690-PRE/5289 4: ETES 5: MC 6: AM 10: Paula Jr., Alderico Rodrigues 12: Aspectos de tolerƒncia a falhas do sistema de computa‡Æo do sat‚lite de sensoriamento remoto da MECB 14: 292-305 53: Simp¢sio em Sistemas de Computadores Tolerantes a Falhas, 5 54: Aug. <1987> 56: Campinas 58: DSS 59: 200409 61: 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: supervisÆo 87: controle 87: Sat‚lite de Sensoriamento Remoto 87: SSR 87: Programa Espacial Completo Brasileiro 87: MECB 83: Este trabalho apresenta o sistema de computa‡Æo, ora em desenvolvimento no Instituto Nacional de Atividades Espaciais (INPE), a ser utilizado para supervisÆo e controle do Sat‚lite de Sensoriamento Remoto (SSR)do Programa Espacial Completo Brasileiro (MECB).0 sistema de computa‡Æo ‚ constitu¡do de dois computadores com redundƒncia interna que se comunicam entre si atrav‚s de um barramento serial. As t‚cnicas de tolerƒncia a falhas que estÆo sendo projetadas para o sistema de computa‡Æo foram organizadas em trˆs fases: detec‡Æo de erros, diagnose e recupera‡Æo. Algumas destas t‚cnicas sÆo implementadas em hardware, outras em software, contudo a maioria delas utiliza uma combina‡Æo de hardware e software.This paper presents the computer system that has been developed at the Instituto Nacional de Pesquisas Espaciais (INPE)to supervise and control the Remote Sensing Satellite (SSR)of the Brazilian Complete Spatial Mission (MECB).The computer system is composed of two computers having internal redundancy that are connected through a serial bus. The fault tolerant techniques that have been designed are organized in three phases: error detection, diagnosis and recovery. Some of these techniques are implemented in hardware, others in software, however most of them uses a combination of hardware and software 91: 8708 MFN: 11284 1: SID/SCD 2: 9691 3: INPE-9691-PRE/5290 4: ETES 5: MC 6: am 10: Hinckel, Jos‚ Nivaldo 12: C lculo do escoamento num bocal convergente-divergente, incluindo efeitos de relaxa‡Æo vibracional 40: Pt 41: Pt 42: 53: Workshop de CombustÆo e PropulsÆo, 3 54: nov. <1989> 56: Lorena 57: BR 58: DMC 61: 64: <1989> 68: PRE 90: b 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: c lculo de escoamento 87: g s 87: tubeira convergente-divergente 87: relaxa‡Æo vibrac¡ona 87: propulsor catal¡tico 87: hidraz¡na 83: Neste trabalho foi descrito um procedimento para o c lculo de escoamento de um g s numa tubeira convergente-divergente, levando-se em conta os efeitos de varia‡Æo dos calores espec¡ficos do g s a, longo da tubeira, devida … relaxa‡Æo vibrac¡onal.0 procedimento ilustrado para o caso de um propulsor catal¡tico hidraz¡na. Neste caso o g s em expansÆo ‚ composto de uma mistura de Hidrogˆnio, Nitrogˆnio e Am“nia. A temperatura na cƒmara de estagna‡Æo para o caso de rea‡Æo adiab tica ‚ de aproximadamente 1150K para os graus de dissocia‡ia‡Æo de am“nia normalmente obtida em propulsores catal¡ticos. Para esta: temperaturas uma parcela consider vel da energia interna do g s est  armazenada sob a forma de energia vibracional, principalmente da am“nia. A expansÆo do g s ‚ normalmente feita at‚ valores da temperatura pr¢ximos da temperatura ambiente, incluindo portanto a faixa de temperatura de excita‡Æo de alguns modos vibracionais da am“nia. As popula‡äes dos n¡veis vibracioniais superiores do nitrogˆnio e hidrogˆnio sÆo tamb‚m consideradas nesta an lise, apesar de serei bastante esparsas , nÆo afetando significamente os resultados as sua inclusÆo ou nÆo 91: FDB-20011208 92: FDB-MLR MFN: 11285 1: SID/SCD 2: 9689 3: INPE-9689-PRE/5288 4: ETES 5: MC 6: am 10: Hinckel, Jos‚ Nivaldo 10: Trava Airoldi, Vladimir Jesus 10: Corat, Evaldo Jos‚ 10: Oliveira Jr., Ismael Emilio 12: Desenvolvimento de compenentes para o subsistema propulsivo do SSR-1 40: Pt 41: Pt 42: 53: Workshop de CombustÆo e PropulsÆo, 3 54: nov. <1989> 56: Lorena 57: BR 58: DMC 61: 64: <1989> 68: PRE 90: b 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: Sistema propulsivo 87: sat‚lite de sensoriamento remoto 87: SSR 87: MissÆo Espacial Completa Brasileira 87: MECB 83: 0 Sistema de controle por rea‡Æo do sat‚lite de sensoriamento remoto (SSR)da MissÆo Espacial Completa Brasileira (MECB)consiste de 12 propulsores catal¡ticos a h¡drazina monopropelente divididos em dois ramos redundantes atuando nos trˆs eixos do sat‚lite.0 Sistema propulsivo (SP), ‚ respons vel pela aquisi‡Æo de atitude logo ap¢s a inje‡Æo em ¢rbita, eleva‡Æo e circulariza‡Æo da ¢rbita, corre‡Æo de inclina‡Æo da ¢rbita, dessatura‡Æo das rodas de rea‡Æo e manuten‡Æo de ¢rbita durante a vida operacional do sat‚lite 91: FDB-20011208 92: FDB-MLR MFN: 11336 1: SID/SCD 4: ETES 5: MC 6: am 7: [07] 10: Lacava, J.C.S. 10: Cividanes, L.B.T. 12: Um novo m‚todo para an lise de antenas de microlinhas 40: En 41: En 42: 53: Simposio Brasileiro de Microondas, 3 54: jul. <1988> 56: Natal 57: BR 58: DMC 61: 64: <1988> 68: PRE 90: b 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: FDB-19950801 92: FDB-MLR MFN: 11344 1: SID/SCD 2: 9692 3: INPE-9692-PRE/5291 4: ETES 5: MC 6: am 10: Kuga, H‚lio Koiti 12: Determina‡Æo preliminar de ¢rbita do sat‚lite brasileiro na fase de lan‡amento 14: 459-464 21: v.1 53: Congresso Nacional de Matematica Aplicada e Computacional, 10 54: 21-25 set. <1987> 56: Gramado 58: DMC 59: 60710X 61: 64: <1987> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPAIAL 87: determina‡Æo de ¢rbit 87: MECB 87: MissÆo Espacial Completa Brasileira 83: Este trabalho apresenta o desempenho de 4 algoritmos de determina‡Æo preliminar de ¢rbita a partir de m 2 vetores posi‡Æo do sat‚lite. Estes m‚todos sÆo candidatos a integrar o software de determina‡Æo preliminar de ¢rbita do Centro de Controle de Sat‚lites da MECB (MissÆo Espacial Completa Brasileira). Os m‚todos foram qualificados atrav‚s de simula‡äes com rela‡Æo … ¢rbita prevista para o primeiro sat‚lite brasileiro a ser lan‡ado em 1989. As condi‡äes de teste correspondem …s primeiras ¢rbitas do sat‚lite a partir do ponto de inje‡Æo, situa‡Æo na qual a determina‡Æo preliminar de ¢rbita torna-se fundamental para o sucesso da missÆo. Este resumo apresenta resultados de testes, cf. [1], que cont‚m informa‡äes importantes acerca do desempenho dos algoritmos sob v rias condi‡äes 91: 8709 MFN: 11350 65: 19861000 1: SID/SCD 4: ETES 5: MC 6: am 10: Liwschitz, S.L. 10: Saturno, M.E. 12: The on Board computer (OBC)functional testing 14: 170-174 21: v.3 Space Science and Tchnology and Plasma Physics 40: En 41: En 42: 53: Japan-Brazil Symposium on Science and Technology, 6 54: 10-13 aug. <1988> 56: SÆo Jos‚ dos Campos 58: ETE 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 83: The testing procedures ensure that the OBC hardware and software work according to the functional specifications. They simulate real operating conditions, implemented through communication with ground receiving telecommands (TC)and sending telemetry (TM). The results are obtained from the TM analysis which is distributed in three different types of verification seta:1-TM structure validation.2-OBC memory content verification.3-OBC operating information and satellite sensors data analysis MFN: 11360 1: SID/SCD 2: 9592 3: INPE-9592-PRE/5220 4: ETES 5: MC 6: am 10: Mattiello-Francisco, Maria de F tima 12: Um sistema de supervisÆo tolerante e falhas 53: Simp¢sio de Computadores Tolerantes a Falhas, 3 54: 20-22 set. <1989> 56: Rio de Janeiro 58: DSS 61: 64: <1989> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: tolerƒncia a falha 87: redundƒncia 87: TEMPO REAL 87: CONTROLE DE PROCESSOS 88: fault tolerant 88: redundancy 88: real time 83: Este trabalho propäe uma solu‡Æo para incorporar t‚cnicas de tolerƒncia a falhas a um sistema de supervisÆo, a fim de provˆ-lo de maior disponibilidade na ocorrˆncia de falhas simples de "hardware". Uma arquitetura b sica com redundƒncia dupla ‚ adotada. Em termos de "software" explora-se a recupera‡Æo a cargo dos aplicativos de SupervisÆo. This paper proposes the incorporation of fault tolerant techniques in a supervision system to provide it of high available when occur simple hardware's fault. A basic architecture with dual redundancy is used. With regard to the software, the backward-error-recovery is explored by establishing recovery points under the control of the supervision applicatives