Uso do grau de preferência alimentar para a caracterizaç ão da alimentação de peixes na APA de São Pedro e Analândia

We studied feeding habits of four fish species in two watershed at APA - Área de Proteção Ambiental (Area of Environmental Protection) in São Pedro and Analândia, State of São Paulo, southeastern Brazil. Feeding Preference Degree (FPD) was used to demonstrate the importance of each food item for the species of both basins. Feeding habits of both species of lambari was variable. The allochtonous items such as insects, autochtonous items, and vegetal material were very important, characterizing omnivory. The bagre (Rhamdia quelen) fed mainly on insects at the Jacaré-pepira Basin and also on fishes at the Corumbataí basin. The cascudo Hypostomus strigaticeps ingested autochtonous vegetal material and sediments at both basins.

Avaliação energética de um sistema de refrigeração por absorção utilizando gás de aterro e gás natural

The current technological development made by the absorption refrigeration system is an economic and ambient alternative in comparison to the vapor cycle, possessing an advantage that uses thermal energy that is less noble. Chillers of absorption are used widely in the air conditioned industries, because they can be set in motion through hot water vapors that burn natural gas, solar energy, biomasses amongst others instead of electricity. These systems allow it to reduce the tips of electric demand and balance the rocking of energy demand. This work has had a main objective to simulate a absorption refrigeration cycle with lithium-water bromide solution using biogas of sanitary landfill, and mixtures of this with natural gas. These results shown to the energy viability of the system burning biogas and its mixtures with natural gas in the generator, when compared with equipments that uses traditional fuels (natural gas, oil diesel, amongst others), for operation the commercial chillers with 15 kW of the refrigeration capacity and temperature of the water in the entrance of 14°C and the exit of 7°C.

Notas sobre a biologia reprodutiva e alimentar de elasmobrânquios no Parque Estadual Marinho Parcel Manoel Luís, Maranhão - Brasil

Data on the reproductive and feeding biology of elasmobranchs from Manoel Luís Reefs, Maranhão State, Brazil. Nine species were recorded and evidences that the area is important for the reproduction and feeding activity of sharks and rays were obtained.

Sostenibilidad energética en América Latina y el Caribe: el aporte de las fuentes renovables

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Energía y cambio climático: oportunidades para una política energética integrada en América Latina y el Caribe

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América Latina y el Caribe frente a la coyuntura energética internacional

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Situación y perspectivas de la eficiencia energética en América Latina y el Caribe = Situation and perspectives on energy efficiency in Latin America and the Caribbean

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Indicadores de políticas públicas en materia de eficiencia energética en América latina y el Caribe

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Eficiencia energética en América Latina y el Caribe: avances y desafíos del último quinquenio

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Prevenir en drogas: enfoques integrales y contextos culturales para alimentar buenas prácticas

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Perspectivas de sostenibilidad energética en los países de la Comunidad Andina

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Cooperación e integración energética en América Latina y el Caribe

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La seguridad energética de América Latina y el Caribe en el contexto mundial

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Estudio sobre empresas energointensivas y su posible contribución a programas de eficiencia energética

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