Lasco
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. A aliança da hidroxicloroquina: como líderes de extrema direita e pregadores da ciência alternativa se reuniram para promover uma droga milagrosa
Resumo Logo após a eclosão da pandemia da COVID-19, o mundo viu líderes de extrema direita se unindo para promover a hidroxicloroquina (HCQ), apesar de resultados controversos. Por que alguns líderes promoveram ativamente o remédio desde então, mesmo contradizendo recomendações de autoridades de saúde de seus próprios governos? Nosso argumento é d
Rev. Adm. Pública. Publicado em: 2021-02
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2. Study of solar-interplanetary-geomagnetic disturbances using data from the Global Muon Detector Network and the LASCO coronagraph / Estudo de disturbios solar-interplanetário-geomagnéticos usando Dados da Rede Mundial de Detectores de Muons e do coronógrafo LASCO
O objetivo do trabalho da Dissertação é estudar distúrbios solar-interplanetário-geomagnéticos, como ejeções de massa coronais solares (Coronal Mass Ejections - CMEs) usando observações de coronógrafos de luz branca e de raios cósmicos de alta energia (muons). A partir de imagens do coronógrafo LASCO-C3 (Large Angle and Spectroscopic Coronagraph
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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3. The solar origins of the Sun-Earth connection events on April 1999 and February 2000
In this work we present a comparison between the solar origins of two solar-terrestrial connection events occurring on April 1999 and February 2000, respectively. On April 13 (1999), a coronal mass ejection (CME) appeared for the first time in LASCO-C2 coronagraph field of view at 03:30 UT. The possible solar disc source of this CME was located at coordinate
Brazilian Journal of Physics. Publicado em: 2004-12
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4. Great geomagnetic storms in the rise and maximum of solar cycle 23
Geomagnetic storms are intervals of time when a sufficiently intense and long-lasting interplanetary convection electric field leads, through a substantial injection of energy into the magnetosphere-ionosphere system, to an intensified ring current, strong enough to exceed some key threshold of the quantifying storm time Dst index. We have studied all the 9
Brazilian Journal of Physics. Publicado em: 2004-12
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5. Bidimensional hidrodinamic model of coronal mass ejections / Modelo hidrodinâmico bidimensional de ejeção de massa coronal
A twodimensional hydrodynamical model is used to follow, in time and space, coronal structures that propagate through the interplanetary medium. These estructures are known as Coronal Mass Ejections (CMEs). A twodimensional grid with the steady state solar wind solution representing the inteplanetary medium is used as the initial condition. The steady state
Publicado em: 2004
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6. Modelo hidrodinâmico bidimensional de ejeção de massa coronal / Bidimensional hidrodinamic model of coronal mass ejections
Um modelo hidrodinâmico (HD) numérico bidimensional é utilizado para investigar, em tempo e espaço, estruturas originárias na coroa solar e que se propagam pelo meio interplanetário, estruturas estas conhecidas como Ejeção de Massa Coronal (EMC). Uma grade bidimensional cartesiana contendo uma solução estacionária do vento solar representando o me
Publicado em: 2004
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7. Estudo de estruturas geoefetivas no meio interplanetário e de suas causas solares. / Study of the interplanetary geoeffective structures and their solar origins
In this work we have studied geoeffective interplanetary structures observed near earth and their solar origins, involving several basic and applied scientific aspects, related to the research area named Space Weather. We present a study of the coronal mass ejections (CME) observed at the sun by the LASCO instrument, in the period of January 1997 to April 20
Publicado em: 2003
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8. Rapid Accumulation of Eosinophils in Lung Lesions in Guinea Pigs Infected with Mycobacterium tuberculosis
Guinea pig eosinophils were positively identified in bronchoalveolar lavage populations and in the lung granulomas of Mycobacterium tuberculosis-infected guinea pigs. It is possible that the rapid influx of these cells, and their subsequent degranulation during acute pulmonary tuberculosis, may play a key role in the susceptibility of this animal model.
American Society for Microbiology.
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9. Effect of Mycobacterium bovis BCG Vaccination on Mycobacterium-Specific Cellular Proliferation and Tumor Necrosis Factor Alpha Production from Distinct Guinea Pig Leukocyte Populations
In this study, we focused on three leukocyte-rich guinea pig cell populations, bronchoalveolar lavage (BAL) cells, resident peritoneal cells (PC), and splenocytes (SPC). BAL cells, SPC, and PC were stimulated either with live attenuated Mycobacterium tuberculosis H37Ra or with live or heat-killed virulent M. tuberculosis H37Rv (multiplicity of infection of 1
American Society for Microbiology.