Emission Atmospheric
Mostrando 13-24 de 87 artigos, teses e dissertações.
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13. Estudos numéricos de química atmosférica para a região do Caribe e América Central com ênfase em Cuba / Atmospheric chemistry numerical studies of Central America and the Caribbean region with emphasis on Cuba
Neste trabalho, foi aplicado o modelo CCATT-BRAMS na região da América Central e do Caribe, com foco em Cuba, com o intuito de estudar os mecanismos físicos e químicos de controle da química, na baixa troposfera nesta região, e prover ferramentas que possibilitem a continuidade deste trabalho nas condições locais. Para tanto, foi implementado o mecan
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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14. A review of low-level air pollution and adverse effects on human health: implications for epidemiological studies and public policy
The aim of this study was to review original scientific articles describing the relationship between atmospheric pollution and damage to human health. We also aimed to determine which of these studies mentioned public policy issues. Original articles relating to atmospheric pollution and human health published between 1995 and 2009 were retrieved from the Pu
Clinics. Publicado em: 2011
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15. Medidas da emissão de poluentes e da eficiência na combustão assistida do glicerol residual de biodiesel. / Measurements of emissions and fuel efficiency of the assisted residual glycerol biodiesel.
With increased global production of biofuels in particular biodiesel, an excess of glycerol is being generated worldwide. This has caused a sharp drop in the price of this compound in the world market. Much thought has been given to a destination for this residue, since no one can lay it in the environment and one of the alternatives be to use would its calo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/11/2010
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16. Um Estudo da Qualidade do Ar na Cidade de Fortaleza. / A Study of Air Quality in the city of Fortaleza.
The quality of life for people around the world has a direct relationship with the ambient air quality, resource essential to life. Population growth in urban centers has contributed profoundly to the increased emission of pollutants into the atmosphere, mainly by burning fossil fuels and other actions of anthropogenic nature. Cities like Tokyo, Beijing, New
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/05/2010
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17. Emissões naturais e antrópicas de metais e nutrientes para a bacia inferior do rio de contas, Bahia
Emission factors of anthropogenic activities and natural processes were used to estimate nutrients and metals loads to the Contas River lower basin, Southern Bahia, Brazil. Among natural sources, emission from soil leaching is larger for N, Cu and Pb. Atmospheric deposition is the major natural source of P, Zn, Cd and Hg. Among anthropogenic sources, agricul
Química Nova. Publicado em: 2010
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18. Poluição veicular: Avaliação dos impactos e benefícios ambientais com a renovação da frota veicular leve na cidade de São Paulo / Vehicle pollution: Analysis of the impacts and environmental benefits concerning the replacement of light vehicles in São Paulo City
This study presents an analysis of the levels of vehicles emissions related to the pollution problems in São Paulo City. Using a methodology called bottom-up, this thesis presents a theoretical evaluation on the rates of pollutants coming out the exhaust pipe of the largest light vehicles fleet in Brazil. Issues related to daily city activities such as the
Publicado em: 2010
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19. Quasi-neutrality and local thermodynamical equilibrium in atmospheric presure arc discharges
The atmospheric pressure Tungsten Inert Gas (TIG) arc plasma in argon is studied combining results from emission spectroscopy temperature maps with composition data and transport parameters available from literature. Two arc currents are considered and maps are obtained for the Debye number, the number of particle in the Debye sphere, which shows values of t
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-09
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20. ZIMORA - UM MODELO NUMÉRICO 3D DE DISPERSÃO ATMOSFÉRICA / ZIMORA - A 3D NUMERICAL MODEL FOR ATMOSPHERIC DISPERSION
In this thesis, we presents a development and validation of a 3D numerical model for the advection-diffusion equation. Models of this kind has been developed for scientific investigations and to support atmospheric emissions control and environmental policy decisions. To develop this model, we used the computational implementation of an explicit numerical sc
Publicado em: 2009
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21. Sustainable business: the concept of governance change - application a company in the petrochemical / Sustentabilidade empresarial: o conceito da governança climática aplicação a uma empresa do ramo de petroquímica
With vital significance, the greenhouse effect gases (GEG), as carbon dioxide and methane, among others, retain sun heat in the atmosphere. This fact avoids sun radiation from dissipating, without letting the Planet being warm enough to keep right conditions for live existence of Earth. However, mankind activities are increasing concentration of these gases
Publicado em: 2009
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22. Estimativa de áreas queimadas com produtos modis como subsídio à estimativa de emissões de gases de efeito estufa pela queima de biomassa na Amazônia e Cerrado Brasileiros / Burned area estimation using MODIS fire products as a subsidy for greenhouse gases emissions estimation due biomass burning in the Brazilian Amazon and Cerrado.
At present, the estimates of parameters used in global emissions models are based on low and moderate spatial resolution satellite data, and even though those was an advanced since the rising of the first orbital platforms, it is still necessary to reduce the uncertainty of these estimates. This improvement depends basically, on the capacity of the scientifi
Publicado em: 2009
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23. Inventário de emissões atmosféricas e avaliação de condicionantes meteorológicas: estudo de caso de Três Lagoas / Inventory of atmosferic emissions and meteorological conditionates: studies of Três Lagoas
Desde a década de 1930 distintos estudos têm fortemente aumentado o conhecimento acerca da atmosfera da Terra. De fato, nos últimos trinta anos, devido ao intenso avanço científico e tecnológico um progresso real ocorreu nesta área; incluindo os efeitos da poluição do ar. No entanto, os efeitos da poluição do ar, principalmente em regiões urbanas
Publicado em: 2009
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24. Estimativa de áreas queimadas com produtos modis como subsídio à estimativa de emissões de gases de efeito estufa pela queima de biomassa na Amazônia e Cerrado Brasileiros / Burned area estimation using MODIS fire products as a subsidy for greenhouse gases emissions estimation due biomass burning in the Brazilian Amazon and Cerrado.
Na atualidade, as estimativas dos parâmetros utilizados nos modelos de emissões globais estão baseadas em informações obtidas com sensores de resolução espacial baixa e moderada, e embora se tenha avançado muito desde o surgimento das primeiras plataformas orbitais, ainda é necessário melhorar a confiabilidade dessas estimativas. Esta melhora depen
Publicado em: 2009