Methane Sensor
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Application of SnO2 Nanoparticles and Zeolites in Coal Mine Methane Sensors
We evaluated solid-state sensors (MOS) manufactured using nanostructured tin oxide (SnO2) obtained by different synthesis methods for selectivity, response and repeatability at different operating temperatures and methane concentrations. In addition, Zeolite 13X pellets were placed in front of the sensors to improve CH4 selectivity in the presence of CO2. Th
Mat. Res.. Publicado em: 27/05/2019
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2. Distribuição da temperatura da superfície do mar e dos sedimentos suspensos na plataforma continental capixaba utilizando imagens landsat 5/TM
O monitoramento da qualidade da água nas regiões internas à Plataforma Continental (PC) apresenta-se dispendioso quando são usados métodos convencionais. O Sensoriamento Remoto Orbital apresenta-se como uma ferramenta alternativa ao monitoramento de variáveis importantes como a Temperatura da Superfície do Mar (TSM) e a Concentração de Sedimentos em
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/2012
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3. Sistema forno-fornalha para produção de carvão vegetal / Kiln-furnace system for charcoal production
A qualidade do carvão vegetal depende da madeira utilizada na carbonização e da tecnologia de conversão. Embora nos últimos anos diversas pesquisas tenham sido desenvolvidas com o intuito de melhorar os índices de qualidade da madeira, grande parte da produção brasileira de carvão ainda ocorre em fornos com baixo rendimento gravimétrico e com emiss
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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4. Study of the fabrication steps of an electro-thermo-optical device using Mach-Zehnder interferometer. / Estudo das etapas de fabricação de dispositivos eletro-termo-ópticos utilizando o interferômetro Mach-Zehnder.
In this work, a study of the steps to fabricate an electro-thermo-optical device is realized. This device is based in a Mach-Zehnder interferometer (IMZ) where a micro-resistor is placed in one of the IMZ arms. The Mach-Zehnder interferometer was fabricated using Anti-Resonant Reflecting Optical Waveguide (ARROW) where oxinytride and amorphous hydrogenated s
Publicado em: 2008
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5. Aspectos do comportamento de gás metano dissolvido na água de reservatórios brasileiros / Aspects of dissolved methane behavior in water bodies of brazilian reservoirs
Extended water bodies such as the hydroelectric reservoirs here studied can be greenhouse gas sources ( CH IND.4 and CO IND.2 ) due to decay of part of submerged forest biomass and also due to allochtonous and autochtonous organic compounds. This work presents concentrations, ebullitive and diffusive fluxes of the gases dissolved in the water column in the f
Publicado em: 2004
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6. Imagens EOS-MODIS e LANDSAT 5 TM no estudo da dinâmica das comunidades de macrófitas na várzea amazônica / EOS-MODIS and LANDSAT 5 images for the study of macrophyte community dinamics in the Amazon varzea
Wetlands encompass about 4 to 6% of the terrestrial surface, occurring in all climates, from the tropics to the tundra, in all continents, and exhibit considerable function in the global carbon cycle, being responsible for up to 72% of the global total methane emissions by non-anthropogenic sources. The Amazon river floodplain is one of the most extensive ar
Publicado em: 2004
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7. Imagens EOS-MODIS e LANDSAT 5 TM no estudo da dinâmica das comunidades de macrófitas na várzea amazônica / EOS-MODIS and LANDSAT 5 images for the study of macrophyte community dinamics in the Amazon varzea
Wetlands encompass about 4 to 6% of the terrestrial surface, occurring in all climates, from the tropics to the tundra, in all continents, and exhibit considerable function in the global carbon cycle, being responsible for up to 72% of the global total methane emissions by non-anthropogenic sources. The Amazon river floodplain is one of the most extensive ar
Publicado em: 2004
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8. Participation of the S4 voltage sensor in the Mg2+-dependent activation of large conductance (BK) K+ channels
The S4 transmembrane segment is the primary voltage sensor in voltage-dependent ion channels. Its movement in response to changes in membrane potential leads to the opening of the activation gate, which is formed by a separate structural component, the S6 segment. Here we show in voltage-, Ca2+-, and Mg2+-dependent, large conductance K+ channels that th
National Academy of Sciences.