Pollution Dispersion
Mostrando 13-24 de 32 artigos, teses e dissertações.
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13. Diversidade GenÃtica Populacional nas espÃcies pioneiras Cyperus ligularis L. C. oduratus L. (Cyperaceae) e Miconia prasina (Sw.) dc. (Melastomataceae) ocorrentes em remanescentes da Floresta AtlÃntica de Pernambuco detectada pelos marcadores moleculares DAF e ISSR
The Atlantic Forests have suffered continuous reductions resulting in urgent need of new strategies for its preservation and for the understanding of the fragmentation consequences, especially aiming its preservation. Regarding this scenario, the plant families Cyperaceae and Melastomataceae play an important role, due to its function as pioneers and forest
Publicado em: 2009
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14. Análise crítica da utilização de modelagem matemática na avaliação da dispersão de efluentes leves no litoral da Baixada Santista ( Estado de São Paulo). / The analysis of mathematical models in the assessment of effuents dispersion in Baixada Santista coastline (State of São Paulo).
The prediction of the hydrodynamic water circulation and pollutants dispersion, mainly in coastal areas, has been a problem that engineers have been facing. This is due to the increase environmental impacts that involve coastal engineering work and management. The usage of mathematic modeling as assessment tool is necessary for these studies. The main purpos
Publicado em: 2008
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15. Avaliação da Qualidade da Água do rio Pitimbu
The Pitimbu River Basin is concern reason, therefore this is one of the mains freshwater sources for the Natal city supplying. The Pitimbu waters river flow into Jiqui pond, as the main supplier of this, that supplies 16% of Natal population and there is a bigger importance despite the supplying of a parcel of Natal city made joining underground waters with
Publicado em: 2008
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16. Modelo integrado de gestão da qualidade do ar da região metropolitanja de Salvador / Air management quality integrated model for the Salvador metropolitan region
A poluição atmosférica tem sido um dos principais temas de interesse no meio científico, tendo em vista sua implicação na qualidade da saúde humana, dos ecossistemas e dos bens construídos, identificando-se com uma dimensão fundamental na busca do desenvolvimento sustentável. A avaliação da qualidade do ar numa região depende da obtenção de da
Publicado em: 2008
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17. Avaliação de modelos fotoquímicos de qualidade do ar e estudo das circulações atmosféricas nos processos de dispersão de poluentes / Evaluation of air quality photochemical models and atmospheric circulations in the pollution dispersion processes.
Throughout numerical simulations and near to surface measurements of pollutants concentrations, in this work some meteorological situations of relevance for high ozone concentrations episodes over the Metropolitan Area of Sao Paulo (MASP) were studied., between 1999 and 2006. Firstly, two photochemical models, CIT and SPM-BRAMS, were evaluated in the sense o
Publicado em: 2008
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18. Comparative analysis of urban sprawl in Brazilian urban agglomerations: theorethical and methodological issues for urban and environmental planning / Analise comparativa da dispersão urbana nas aglomerações urbanas brasileiras : elementos teoricos e metodologicos para o planejamento urbano e ambiental
The association between urbanization and environmental degradation is commonplace in the demographic and sociological literature, especially in the debates on the relations among urban population growth, scarcity of resources, pollution and quality of life. Recent changes in population distribution patterns in Brazil s principie urban agglomerations lead to
Publicado em: 2007
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19. INVERSE PROBLEM IN ATMOSPHERIC PHISICS / PROBLEMAS INVERSOS EM FÍSICA DA ATMOSFERA
Techniques for estimating unknown terms - such as eddy diffusivity and counter-gradient - in atmospheric flow are presented in this study. The methos is also used to identify the source term in atmospheric pollution. The scheme adopted is based on inverse problem methodology. The inverse problem is formulated as a non-linear optimization problem, where the o
Publicado em: 2005
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20. A CFD model for pollutant dispersion in rivers
Studies have shown that humankind will experience a water shortage in the coming decades. It is therefore paramount to develop new techniques and models with a view to minimizing the impact of pollution. It is important to predict the environmental impact of new emissions in rivers, especially during periods of drought. Computational fluid dynamics (CFD) has
Brazilian Journal of Chemical Engineering. Publicado em: 2004-12
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21. UM MODELO EULERIANO DE DISPERSÃO DE CONTAMINANTES APLICADO EM DIFERENTES CONDIÇÕES DE ESTABILIDADE ATMOSFÉRICA
This work describes a model for contaminant dispersion under different atmospheric stability conditions. It can be used to simulate the concentration of contaminants released from sources located at different heights in the PBL. Eddy diffusivities are derived for a convective and mechanical turbulence. These eddy diffusivities are introduced into an Eulerian
Publicado em: 2004
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22. Effects of sprinkler irrigation with treated sewage effluent, rich in sodium, on the chemical and physical properties of a typic hapludults cultivated with Tifton 85 grass. / Efeito da irrigação com efluente de esgoto tratado, rico em sódio, em propriedades químicas e físicas de um argissolo vermelho distrófico cultivado com capim-Tifton 85.
The natural scarcity of freshwater in the world has been aggravated by the pollution of the watercourses. The systems of treatment of sewage generate residues, such as treated sewage effluent, that when launched into rivers, has caused environmental impact. The use of the sewage effluent has been considered an important practice to minimize the negative impa
Publicado em: 2004
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23. "Circulações locais em São Paulo e sua influência sobre a dispersão de poluentes" / Local Circulations in São Paulo and its Influence on Pollution Dispersion
Os efeitos causados pela presença de áreas urbanizadas da Região Metropolitana de São Paulo (RMSP), conhecidos por ilha de calor urbana, são estudados através da modelagem numérica e da análise de alguns dados observacionais, coletados no período de inverno de 1999 durante a 1ª Fase intensiva de medidas de campo do Projeto Temático FAPESP Meteor
Publicado em: 2003
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24. RemoÃÃo de Enxofre da Gasolina em Coluna de Leito Fixo, com uso de Adsorventes ZeolÃticos
The emission of poisons like SOx and hydrocarbons from automotives vehicles is at the moment one of the major sources of atmospheric pollution. The SOx, for instance, is responsible for corrosion in cars, industrial facilities and acid rains. So, during the last years the environmental protection agencies have reduce drastically the levels of permitted emiss
Publicado em: 2003