Atmospheric Parameters
Mostrando 25-36 de 131 artigos, teses e dissertações.
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25. Reanálise CFSR-NCEP aplicada ao modelo SiB2 na simulação de fluxos de CO2 sobre o cultivo de soja em Cruz Alta.
The present work aimed to evaluate the behavior of CO2 fluxes, run by the Simple Biosphere Model (SiB2), by adopting CFSR-NCEP data reanalyzed as an atmospheric boundary condition. A statistical analysis was used in order to validate the results obtained using a coefficient for the adjusted model based on the simulation parameters when compared to the data o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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26. Abordagem sistêmica aplicada aos complexos agroindustriais da soja e do algodão no território do extremo oeste da Bahia / Systemic approach applied to agrobusiness complexes of soy and cotton in the territory of the extreme West of Bahia
The present study focues to analyse the changes of geosystem of western of Bahia in consequence of anthropic action, since innovative inputs from system by introduction of soya and cotton crops. In order to understand the new spatial organization of Barreiras, Correntina, Luís Eduardo Magalhães e São Desidério Citys, since 1970. The quantitative paramete
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/12/2011
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27. Um estudo sobre tensões induzidas por descargas atmosféricas em linhas de transmissão
The study of lightning and the resulting induced voltages is very important in the process of designing of transmission lines. In this work it will be presented problems that can be caused by such phenomenon in electrical systems, as a consequence of these voltages peaks. A analysis of the characterization of atmospheric discharge is performed in order to un
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/09/2011
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28. Avaliação da qualidade da água de chuva e de um sistema filtro-vala-trincheira de infiltração no tratamento do escoamento superficial direto predial em escala real em São Carlos SP / Evaluation of rainfall water quality and a filter-swaleinfiltration trenches system in the treatment of the building direct runoff in real scale in são carlos sp
Several studies cite the pollution of stormwater as equivalent and sometimes even superior to those found in the sewers. According to this premise and thinking about environmental issues, especially in the contamination of groundwater and the spread of waterborne diseases, the quality of rainwater has become an important focus of study. This work concerns th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2011
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29. 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
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30. Aerossóis Atmosféricos: Medidas de Concentração sobre o Estado do Ceará. / Atmospheric Aerosols: Measurements of Concentration on the state of Ceara.
This work is a dissertation that aims to get standards in scientific measurements of the concentration of aerosols in the atmosphere over the State of Ceará and estimate empirical relationships between cloud condensation nuclei and nuclei of condensation on the basis of a set of supersaturation and the altitude. Data were used: the concentration of aerosols
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/03/2011
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31. Otimização e validação de método empregando SPE e LC-APCI-MS/MS para determinação de fármacos em água de superfície e de abastecimento público / Optimization and validation method for using SPE LC-APCI-MS/MS and determination of pharmaceuticals in surface water and public water supply
The global use of drugs classified as emerging contaminants has become a new environmental problem due to possible contamination of surface and supply water and may impact the environment and cause harm to public health. In the city of Rio Grande, RS, Brazil, the supply of drinking water is accomplished by CORSAN (Companhia de Saneamento Riograndense), which
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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32. Desenvolvimento e validação de método analítico para quantificação de ácido pfáffico em Hebanthe eriantha / Development and validation of analytical method for quantification of pfáffico acid in Hebanthe eriantha
Hebanthe erianthe (Amaranthaceae) is known as "Brazilian ginseng¿, due to the similarity of its roots with those of Panax ginseng (Araliaceae), the "Korean ginseng¿. Its roots, with proved antineoplastic activity, are constituted by saponins, which during hydrolysis, release saccharides and free molecules of pfaffic acid, a nortriterpene. Pfaffic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2011
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33. Lightning risk warnings based on atmospheric electric field measurements in Brazil
Abstract: This paper presents a methodology that employs the electrostatic field variations caused by thundercloud formation or displacement to generate lightning warnings over a region of interest in Southeastern Brazil. These warnings can be used to prevent accidents during hazardous operations, such as the manufacturing, loading, and test of motor-rockets
J. Aerosp. Technol. Manag.. Publicado em: 2011-12
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34. Avaliação de tecnologia para redução da viscosidade de resíduos pesados de petróleo utilizando laser / Assessing technology for reducing the viscosity of heavy petroleum residues using laser
The use of infrared radiation produced by a CO2 laser in visbreaking of heavy fractions of petroleum was assessed. The main criterion used to evaluate the technology was to compare the viscosities of atmospheric distillation residues before and after being irradiated under different operating conditions of the laser. A suitable profile for comparison was dev
Publicado em: 2011
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35. 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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36. Influência de parâmetros microfísicos no ciclo de vida de nuvens convectivas de fase mista. / Influence of microphysical parameters in the life cycle of convective mixed-phase clouds.
Este trabalho tem como objetivo analisar como variações em parâmetros microfísicos afetam a formação e o ciclo de vida de nuvens de fase mista, para diferentes condições de estabilidade vertical. A ferramenta adotada é uma versão de "modelo de ensemble de nuvens" ("cloud ensemble model" - CEM) do Regional Atmospheric Modeling System (RAMS). São ut
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/11/2010