Pollutants Dispersion
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. GASES DE NITROGÊNIO REATIVO COMO PRECURSORES DO AEROSSOL ATMOSFÉRICO: REAÇÕES DE FORMAÇÃO, PROCESSOS DE CRESCIMENTO E IMPLICAÇÕES AMBIENTAIS
The increased emissions of reactive nitrogen gases from anthropogenic sources to the atmosphere has been pointed out as responsible for triggering a series of environmental problems at the local, regional, and global scale. Among the many consequences associated with the excess of reactive nitrogen in the environment is the increase of atmospheric aerosol fo
Quím. Nova. Publicado em: 2021-04
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2. Modelagem de plumas de efluentes entre Praia Grande e Peruíbe, litoral do estado de São Paulo, Brasil
RESUMO O presente trabalho teve como objetivo monitorar a dispersão de plumas de efluentes provenientes dos emissários submarinos de Praia Grande e do Rio Itanhaém, por meio do processamento do modelo Delft3D (módulos hidrodinâmico e de qualidade da água) e do modelo Visual Plumes (módulo UM3). A modelagem de campo próximo indicou que as correntes ge
Eng. Sanit. Ambient.. Publicado em: 15/08/2019
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3. ON THE SYNTHESIS OF MOLYBDENUM CARBIDE WITH COBALT ADDITION VIA GAS-SOLID REACTIONS IN A CH4/H2 ATMOSPHERE
Abstract Due to ever more severe environmental regulations regarding SOx, NOx and other pollutants' emissions, there has been an interest in developing new and improved catalysts for hydroprocessing reactions. Mo2C has been reported to display good selectivity and activity for those reactions, especially for HDS. Addition of another metal to the carbide stru
Braz. J. Chem. Eng.. Publicado em: 2016-09
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4. Polymeric Materials for Membrane Contactor Devices Applied to Water Treatment by Ozonation
AbstractIn water treatment process ozone is applied to disinfection and to remove organic pollutants. Membrane contactor devices are used as a physical barrier to separate two fluids without phase dispersion and it can be used to improve the ozonation efficiency. Polymeric materials are used in membrane contactors and they can react with ozone, suffering deg
Mat. Res.. Publicado em: 2015-10
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5. VARIACIÓN DE LA ESTABILIDAD Y ALTURA DE LA CAPA DE MEZCLA EN LA CIUDAD DE PINAR DEL RÍO. SU RELACIÓN CON CONDICIONES SINÓPTICAS
The study was carried out in the city of Pinar del Rio in Cuba during the period 2006-2010, where the behavior of atmospheric stability and the mixing height was analyzed. For obtaining the category of atmospheric stability the classification according to the Monin -Obukhov length was used. The methodology for calculating the mixing height was based on the p
Rev. bras. meteorol.. Publicado em: 2015-03
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6. Simulation of Rocket Exhaust Clouds at the Centro de Lançamento de Alcântara Using the WRF-CMAQ Modeling System
ABSTRACT: In this work we report numerical simulations of the contaminant dispersion and photochemical reactions of rocket exhaust clouds at the Centro de Lançamento de Alcântara (CLA) using the CMAQ modeling system. The simulations of carbon monoxide (CO), hydrogen chloride (HCl) and alumina (solid Al2O3) pollutants emission represent an effort in the con
J. Aerosp. Technol. Manag.. Publicado em: 2014-06
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7. Estudo espaço-temporal da mortalidade e morbilidade por doenças respiratórias no município de Botucatu, São Paulo / Space-time study of moratality and morbidity for respiratory diseases in teh city of Botucatu, São Paulo
An ecological study conducted between the years 2003 to 2010 with monthly data on the number of mortality and morbidity from respiratory diseases, areas for monoculture of sugar cane and spatial distribution of outbreaks of fires in Botucatu, São Paulo. Data were extracted, respectively, of databases DATASUS AND THE Institute for Space Research (INPE). The
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2012
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8. Avaliação da hidrodinâmica e da poluição no Canal de Piaçaguera, no Estuário de Santos-São VIcente (SP), a partir de informações ambientais e modelagem numérica / Evaluation of hydrodynamics and pollution at Piaçaguera Channel, on the Firth of Santos - São Vicente (SP), from numerical modeling and environmental information.
Localizados na interface entre a terra e o mar, sistemas estuarinos estão propensos a grandes influências de substâncias que são introduzidas por diversas fontes, incluindo rios, deposição atmosférica, efluentes e escoamento de água superficial. Estas áreas, em geral, possuem um forte gradiente de concentração de substâncias químicas, onde essas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/04/2012
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9. Simulação da dispersão dos poluentes atmosféricos para aplicação em análise de impacto / Simulation of air pollutants dispersion for appliance in impact analysis
Atualmente os estudos de poluição atmosférica são divididos naqueles que simulam a dispersão dos poluentes e nos que avaliam o impacto da poluição na saúde, não sendo frequentes estudos que envolvem as duas áreas. O objetivo desta pesquisa é propor uma metodologia de união da dispersão com o impacto na saúde, utilizando ferramentas já consolid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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10. Characterization of Surface Level Wind in the Centro de Lançamento de Alcântara for Use in Rocket Structure Loading and Dispersion Studies
Abstract: We present wind data collected for ten days during the dry season in 2008 during the Murici II Campaign, which was carried out in the area of the Centro de Lançamento de Alcântara (CLA). The main goals are to better understand processes governing the wind regime in the CLA and the development of tools for analyzing the impact of wind on rocket st
J. Aerosp. Technol. Manag.. Publicado em: 2012-03
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11. Neuro estimador para o fluxo de gases entre a superfície terrestre e a atmosfera / A neuro estimator for the flux of gases between the surface land and the atmosphere
Studies show that global warming may be irreversible in the medium or long term, and is a major cause of air pollution. However, this framework can be reversed or mitigated by estimating the amount of emissions, since the mapping of pollution sources could facilitate the work of public authorities in relation to environmental monitoring and the development o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2011
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12. Medição do aporte atmosférico dos elementos-traço nos municípios de Campinas e Paulínia com auxílio da espécie vegetal Tillanásia usneoides (L.) / Measurement of atmospheric supply of trace elements in Campinas and Paulínia with support of vegetal specie Tillandsia usneoides (L.)
The epiphytic bromeliad Tillandsia usneoides (L.) was used as biomonitor of the atmosphere at seven sites along a transect of the municipalities of Campinas and Paulinia. The selected sites are located near highways, industries and avenues, as well as in places farther away from human activities. The samples of were introduced by about two months during five
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/06/2011