Emergy
Mostrando 25-28 de 28 artigos, teses e dissertações.
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25. Avaliação do ciclo de vida do álcool etílico hidratado combustível pelos métodos EDIP, exergia e emergia / Life cycle assessment of hydrated ethylic alcohol fuel by EDIP, exergy and emergy methods
One of the most integrated, complete and efficacious means for the environmental management of productive activities is based on the life cycle of the product, whose main tool is the life cycle assessment. The assessed product is the hydrated ethylic alcohol fuel because of the environmental improvement possibilities during its life cycle, an alternative for
Publicado em: 2005
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26. On-line emergy analysis for diagnosis of agricultural system. / Analise emergetica on-line para diagnostico de sistemas agricolas.
O objetivo deste trabalho foi desenvolver um aplicativo Web que utiliza a análise emergética para fornecer indicadores ambientais e econômicos que auxiliem no diagnóstico de sistemas agrícolas. A importância do trabalho se justifica pela necessidade de pesquisas tecnológicas em busca de ferramentas que apóiem um desenvolvimento sustentável dos siste
Publicado em: 2005
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27. Avaliação de sustentabilidade aplicada ao biodiesel
In this work the biodiesel fuel production chain was analyzed with respect to its sustainability. The biodiesel considered in this study was an ethyl esther of soybean oil, produced from degummed soybean oil and anhydrous ethyl alcohol, both derived from renewable resources (soybean and sugarcane). The production system of this liquid fuel was investigated b
Publicado em: 2004
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28. A emergy analysis of trends in sugar cane sector / Uma analise emergetica de tendencias do setor sucroalcooleiro
With the first crisis of the oil, in 1973, it had necessity to search alternative energy sources that could substitute the oil derivatives. Thus, the Alcohol National Program ? ProÁlcool ? was instituted with the emission of the Decree n° 76,593, of November 14, 1975, being based, initially, in the anhydrous alcohol production to be mixed to gasoline. With
Publicado em: 2000