Energetic Sector
Mostrando 13-24 de 35 artigos, teses e dissertações.
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13. Modelagem de SÃries Representativas do Setor EnergÃtico Brasileiro / Modeling of Representative Series of the Brazilian Energetic Sector
Neste trabalho foram realizadas modelagens univariadas e multivariada das principais sÃries que compÃem o setor energÃtico brasileiro, constituÃdo por fontes renovÃveis e nÃo renovÃveis de energia, utilizando tÃcnicas de sÃries temporais. A sÃrie de produÃÃo de cana-de-aÃÃcar, em milhÃes de toneladas, e a sÃrie de produÃÃo de Ãlcool nÃvel
Publicado em: 2007
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14. EFEITO DO BAGAÇO DE MAÇÃ SOBRE A GLICEMIA, LIPIDEMIA , PEROXIDAÇÃO DE LIPIDEOS E PESO CORPORAL EM RATOS OBESOS
Brazilian apple prodution and processing have been increasing inthe last few years and a novel agroindustrial residue arose plain with bioactive compounds like polyphenols, sugars and dietary fibers. Special pomace utilization able to provide economical advantages to the industrial sector. increasing profit values in de food and pharmaceutical products and e
Publicado em: 2007
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15. Hydrothermal scheduling with storage guide-curves / Planejamento da operação energetica via curvas-guias de armazenamento
The Brazilian electric sector has been passing through successive reforms in the search for an institutional model that allows the optimization of the use of the energetic resources, concealed with the goal of achieving a sustaining development. The energetic planning plays a fundamental roll in this context, thus studies and researches designated to support
Publicado em: 2006
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16. Cost and energy evaluations in grain elevator units / Avaliação energética e de custo em unidades armazenadoras
The agroindustry sector has an important role in Brazilian economy. In 2004, the exports of the agrobusiness corresponded to 40.4% of the total Brazilian export, as totaling US$ 96.475 billion. The lack of investments in the energy sector, that caused electric power rationing for a period of one year from June 2001, associated to the seasonableness of the re
Publicado em: 2006
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17. Comparison of indicatives of energetic and exergetic efficiency in two industries of sugar-alcohol sector / ComparaÃÃo de indicadores de eficiÃncia energÃtica e exergÃtica em duas indÃstrias do setor sucroalcooleiro
Este trabalho teve como objetivo estudar e comparar indicativos energÃticos e exergÃticos de duas indÃstrias do setor sucroalcooleiro. O estudo foi realizado no perÃodo de safra 2005 em ambas as indÃstrias. Optou-se em se fazer o experimento utilizando-se dados das caldeiras individualmente em cada indÃstria, quantidade de cana moÃda, propriedades da
Publicado em: 2006
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18. A contribution for the use of natural gas as an alternative in the national energetic matrix / Uma contribuição para a inserção do gas natural como alternativa viavel na matriz energetica nacional
The use of natural gas has shown an marked growth motivated by its technical, environmental, and economical characteristics, althouglt it is not a renewable resource. To use its energy brings advantages when compared to oil in some applications and processes. Therefore, there has been a great inclusion of its use as a fuel in industrial, residential, commerc
Publicado em: 2006
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19. A reforma do estado e a crise no setor de energia elétrica: uma visão crítica do caso brasileiro
This study tried to describe the State reform in the Brazilian energetic sector and how the energetic crises of 2001 influenced this process. With this purpose, two kinds of research were done: a bibliographic and some interviews. Many authors were studied to find out the construction of the State role in the Brazilian energetic sector. The interviews were d
Publicado em: 2005
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20. Efeito da quantidade fixa ou variável de leite e do uso de aditivos sobre o desempenho de cabritos lactentes / Efect of the fixed or variable amount of milk and the use of oil and microbial additive upon daily weight gain of goat kids
This study was carried out in the sector of goat culture of the UFRRJ where two experiments were performed to evaluate some nutritional strategies to raise more economically the goat kids. In the first experiment the daily weight gain (DWG) was measured in four animals groups that received goat milk, cow milk, cow milk plus soybean oil and cow milk plus soyb
Publicado em: 2005
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21. Proposal of methodology for avaliation of the commercials losses of the electrical systems : the Manaus case / Proposta de uma metodologia para avaliação das perdas comerciais dos sistemas eletricos : o caso Manaus
The financial-economical equilibrium guaranteed by the concession contract made by the concessionaries before the granting power, has as a prerogative an acting management by the service agent owner. That evidences its technical and commercial control, as well as the promotion of the technological development of the granted services. In such a context, it is
Publicado em: 2005
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22. Estudo da contribuição do gás natural no setor elétrico - uma análise de cenários de sua expansão nos setores de geração termelétrica, cogeração e residencial. / Study of natural gas contrubution on the electricity sector an expansion scenario analysis in thermoelectric generation, cogeneration and residential sector.
Após a divulgação recente pela Petrobrás, da descoberta de uma grande quantidade de Gás Natural (GN) na bacia de Santos, as políticas de incentivo ao seu consumo e conseqüente aumento de sua participação na matriz energética nacional ganham força. Aliada a isto, a busca crescente da adoção dos conceitos do Desenvolvimento Sustentável (DS) e do
Publicado em: 2005
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23. Planejamento do "mix energÃtico" de geraÃÃo de energia elÃtrica no Brasil : uma avaliaÃÃo da aplicabilidade de otimizaÃÃo linear multiobjetivo no contexto do novo modelo institucional do setor elÃtrico
This dissertation was developed having as premisse to be including and to allow easy understanding of the displayed, preventing, however, the superficiality. It composes of three independent parts that complete themselves, in the case, the chapters 2, 3 and 4, which can be read in the order where to desire, after the introduction of Chapter 1. Each part woul
Publicado em: 2005
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24. Seasonal cusp radiation belt on dayside magnetosphere
The possibility of quasi-stable trapping of charged particles of hundreds keV to MeV energy on the frontside Earth magnetosphere is explored in by numerical modeling of the single particle orbits in the geomagnetic field utilizing empirical Tsyganenko magnetic field model. Due to solar wind pressure the remote magnetic field lines on the frontside of the mag
Brazilian Journal of Physics. Publicado em: 2004-12