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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
07/02/2008 |
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Data da última atualização: |
07/02/2008 |
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Autoria: |
GRIS, C. F.; CARVALHO, M. L. M. de; OLIVEIRA, A. dos S. |
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Título: |
Adequação do teste de tetrazólio para avaliação da qualidade fisiológica em sementes de pinhão manso (Jatropha curcas). |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: CONGRESSO DA REDE BRASILEIRA DE TECNOLOGIA DE BIODIESEL, 2., 2007, Brasília, DF. Anais...Brasília, DF: MCT/ABIPTI, 2007. |
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Idioma: |
Português |
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Palavras-Chave: |
Controle de qualidade da semente de pinhão manso; Viabilidade da semente; Vigor da semente. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00669naa a2200169 a 4500
001 1276634
005 2008-02-07
008 2007 bl uuuu u00u1 u #d
100 1 $aGRIS, C. F.
245 $aAdequação do teste de tetrazólio para avaliação da qualidade fisiológica em sementes de pinhão manso (Jatropha curcas).
260 $c2007
653 $aControle de qualidade da semente de pinhão manso
653 $aViabilidade da semente
653 $aVigor da semente
700 1 $aCARVALHO, M. L. M. de
700 1 $aOLIVEIRA, A. dos S.
773 $tIn: CONGRESSO DA REDE BRASILEIRA DE TECNOLOGIA DE BIODIESEL, 2., 2007, Brasília, DF. Anais...Brasília, DF: MCT/ABIPTI, 2007.
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Registro original: |
Embrapa Algodão (CNPA) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
28/07/2011 |
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Data da última atualização: |
07/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
KEMENES, A.; FORSBERG, B. R.; MELACK, J. M. |
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Afiliação: |
ALEXANDRE KEMENES, CPAMN; BRUCE R. FORSBERG, Instituto Nacional de Pesquisas da Amazonia, Manaus, Brazil; JOHN M. MELACK, Bren School of Environmental Science and Management, University of California, Santa Barbara, California, USA. |
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Título: |
CO2 emissions from a tropical hydroelectric reservoir (Balbina, Brazil). |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Journal of Geophysical Research, Washington, v. 116, n. G03004, p. 1-11, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Hydroelectric reservoirs can release significant quantities of CO2, but very few results are available from the tropics. The objective of the present study was to estimate the emission of CO2 from the Balbina hydroelectric reservoir in the central Brazilian Amazon. Diffusive and ebullitive emissions were estimated at regular intervals, both above and below the dam, using a combination of static chambers and submerged funnels. Gas releases immediately below the dam were calculated as the difference between gas flux at the entrance and the outflow of the hydroelectric turbines. An inundation model derived from a bathymetric map and daily stage readings was used for spatial and temporal interpolation of reservoir emissions. Annual emissions of CO2, upstream and downstream of Balbina dam for 2005, were estimated as 2450 and 81 Gg C, respectively, for a total annual flux of 2531 Gg C. Upstream emissions were predominantly diffusive with only 0.02 Gg C yr-1 resulting from ebullition. On average, 51% of the downstream emission was released by degassing at the turbine outflow, and the remainder was lost by diffusion from the downstream river. The total annual greenhouse gas emission from Balbina dam, including the CO2 equivalent of previously estimated CH4 emissions, was 3 Tg C yr-1, equivalent to approximately 50% of the CO2 emissions derived from the burning of fossil fuels in the Brazilian metropolis of São Paulo. |
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Palavras-Chave: |
CO2; Emissão de gás carbônico. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38854/1/CO2emissions.pdf
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Marc: |
LEADER 01931naa a2200169 a 4500
001 1896953
005 2022-06-07
008 2011 bl uuuu u00u1 u #d
100 1 $aKEMENES, A.
245 $aCO2 emissions from a tropical hydroelectric reservoir (Balbina, Brazil).
260 $c2011
520 $aHydroelectric reservoirs can release significant quantities of CO2, but very few results are available from the tropics. The objective of the present study was to estimate the emission of CO2 from the Balbina hydroelectric reservoir in the central Brazilian Amazon. Diffusive and ebullitive emissions were estimated at regular intervals, both above and below the dam, using a combination of static chambers and submerged funnels. Gas releases immediately below the dam were calculated as the difference between gas flux at the entrance and the outflow of the hydroelectric turbines. An inundation model derived from a bathymetric map and daily stage readings was used for spatial and temporal interpolation of reservoir emissions. Annual emissions of CO2, upstream and downstream of Balbina dam for 2005, were estimated as 2450 and 81 Gg C, respectively, for a total annual flux of 2531 Gg C. Upstream emissions were predominantly diffusive with only 0.02 Gg C yr-1 resulting from ebullition. On average, 51% of the downstream emission was released by degassing at the turbine outflow, and the remainder was lost by diffusion from the downstream river. The total annual greenhouse gas emission from Balbina dam, including the CO2 equivalent of previously estimated CH4 emissions, was 3 Tg C yr-1, equivalent to approximately 50% of the CO2 emissions derived from the burning of fossil fuels in the Brazilian metropolis of São Paulo.
653 $aCO2
653 $aEmissão de gás carbônico
700 1 $aFORSBERG, B. R.
700 1 $aMELACK, J. M.
773 $tJournal of Geophysical Research, Washington$gv. 116, n. G03004, p. 1-11, 2011.
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