Electric Station
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Radio-Wave Propagation Model for UHF Band in Different Climatic Conditions with Dyadic Green’s Function
AbstractThis article proposes a deterministic radio propagation model using dyadic Green's function to predict the value of the electric field. Dyadic is offered as an efficient mathematical tool which has symbolic simplicity and robustness, as well as taking account of the anisotropy of the medium. The proposed model is an important contribution for the UHF
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2015-06
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2. Introdução de misturas de GNV e hidrogênio (Hidrano) em veículos convencionais no Brasil e seus impactos econômicos, ambientais e energéticos / Introduction of CNG and hydrogen (HCNG) for conventional vehicles and its economic, environmental and energy impacts
Several strategies have been proposed to introduce hydrogen in the economy specifically in the transport sector in order to reduce environmental impacts of conventional fuels. One of the strategies implies in adding hydrogen to compressed natural gas (HCNG), making use of the existing refueling stations and natural gas fleet. Thus the costs and time for the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2012
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3. Investigação dos principais processos de corrosão em estações de energia elétrica do Estado do RS / Investigation of the main corrosion processes on electrical energy stations of the state of Rio Grande do Sul - Brasil
Este estudo investigou os principais agentes de corrosão em quatro subestações de energia elétrica do estado do Rio Grande do Sul, três no litoral e uma em Porto Alegre. O objetivo foi determinar as taxas de corrosão de vários materiais metálicos expostos aos agentes agressivos existentes no ambiente das subestações. Foram desenvolvidos experimento
Publicado em: 2010
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4. Rock mass characterization of Morro Grande PCH using the RMR system / Compartimentação de maciços rochosos para projetos básicos de PCH´s usando o sistema RMR: aplicação no projeto básico da PCH Morro Grande - RS
The opening of the electric production sector in Brazil causes an increase amount of Small Hydroelectric Power Station - PCHs - project. The necessaries geological-geotechnical studies for this kind of construction had to be adapted to this new sector necessity, without quality losses. This research aim was the improvement of the geological-geotechnical stud
Publicado em: 2009
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5. Erosão laminar, atributos físico-químicos do solo e estrutura trófica da nematofauna em áreas do Reservatório da Usina Hidrelétrica Luiz Gonzaga
Naturally occurring erosion or in association with anthrop action (mainly) is a serious environmental problem, particularly in reservoir, because environmental degradation generate by erosive process is a risk for water availability, electric power generation, water supply and navigation. The present study aimed to characterize and correlate physical and che
Publicado em: 2009
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6. Ferramenta para Avaliação da Energia Firme Baseada em Técnica de Pontos Interiores / A tool for Evaluation of Firm Energy Based on Interior Point Technique
The energy sector planning is fundamental to assure the energy supply at the smallest costs and risks and with the smallest socioeconomic and environmental impacts for the society. These factors as well as the aspects complexity involved in the industry operation of the electrical energy production explain the importance of the energy sector planning. Nowada
Publicado em: 2008
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7. Lixiviação de nutrientes em lisímetros de drenagem na presença de polímero hidroabsorvente. / Leaching of nutrients in drainage of lisímeter with application of hydrogel polymer.
The objective of the present work was to evaluate the leaching of nutrients applied in soils in coriander cultivations, in conditions drainage of lisimeter, by utilizing a hidrogel polymer named Hidratassolo. The study was done in an experimental station built in the Tecnologia Rural Department of Universidade Federal Rural de Pernambuco, located in the muni
Publicado em: 2007
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8. Street forestry potential on the reduction of electric energy consumption: definition of tree areas in the city of SP, interviews, evaluation of environmental factors and heat degree hour estimation / Potencial da arborização viária na redução do consumo de energia elétrica: definição de três áreas na cidade de São Paulo - SP, aplicação de questionários, levantamento de fatores ambientais e estimativa de Graus-Hora de calor
The problematic to obtain and use energy in a conscious way in cities is a polemic issue nowadays. Frequently, urban areas have darker surfaces areas with less vegetation than neighbor areas. These differences affect the climate, the energy use and the quality of life. One of the action lines to promote an efficient use of electric energy in cities, through
Publicado em: 2007
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9. Hidrolases e fenoloxidases de microrganismos como marcadores para seleção de biosuplementadores e avaliação do tratamento sobre efluentes sucroalcooleiros
Due to the current and future problematic of the maintenance of the hydric resources, the reuse of waters after previous treatment has been a strategy in the management of aquifers. The bioaugmentation is one of the techniques of purification of effluents and, because of this, studies were carried out in lagoons from the station of treatment of effluents (ST
Publicado em: 2007
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10. Respostas ecofisiológicas da comunidade perifítica in situ a diferentes condições ambientais no Rio Santa Maria da Vitória, ES
The physiological ecology responses of periphyton in the high course of the Santa Maria da Vitória (ES) river had been evaluated during one year, in two stations. The determined environmental variables had been: temperature, transparency, euphotic zone, depth, pH, OD, electric conductivity, STD, NO2 -, NO3 -, total-N, PO4 - and total-P. The Periphyton in na
Publicado em: 2006
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11. DiagnÃstico ambiental e proposta de monitoramento da Ãrea do Lago de Miranda pertencente ao municÃpio de IndianÃpolis â MG
The construction of the hydro-electric power station and the consequent creation of an artificial lake, in the city of IndianÃpolis - MG, had brought ambient impacts that had unchained substantial modifications in its around. This induced all the indianopolense population to learn to coexist an area, seen now as leisure area, that before did not exist; what
Publicado em: 2006
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12. "Rio Grande Reservoir: limnological characteristics of the water and metal bioavailability in sediment." / "Reservatório Rio Grande: caracterização limnológica da água e biodisponibilidade de metais-traço no sedimento"
The Rio Grande branch is a part of Billings Complex and is isolated from the central body by Anchieta Dam. This reservoir is located in São Paulo Metropolitan Region and has multiple uses, including water supply, recreation, leisure, receptor of domestic and industrial wastewater. At the present work, the water column was studied in 6 stations along the res
Publicado em: 2006