Tipo de ítem | Ubicación actual | Colección | Signatura | Estado | Fecha de vencimiento | Código de barras |
---|---|---|---|---|---|---|
Libros | Centro de Documentación - Olade | Documentos Externos | 333.953/I249/1976 (Navegar estantería) | Disponible |
Navegando Centro de Documentación - Olade Estantes, Código de colección: Documentos Externos Cerrar el navegador de estanterías
333.953/I249/1976 Gas production from micro algae | 333.953/I249/1976 Enzymatic hydrolisis of cellulosic wastes to fermentable sugars for alcohol production | 333.953/I249/1976 Forests as a source of electric power | 333.953/I249/1976 The resource costs of agricultural production | 333.953/I249/1976 Design, operation and economics of the energy plantation | 333.953/I249/1976 EPA'S program in environmental research in wastes - as - fuel | 333.953/I249/1976 Environmental studies on the St. Louis - Union electric refuse firing demonstration |
Impreso. El artículo es parte de: Clean fuels from biomass, sewage, urban refuse, agricultural wastes: symposium papers.
06104
The resource inputs of energy, land and labor are analyzed for various food production systems. U.S. type intensive agriculture relies on large amounts of fossil fuel, fertilizer, and machinery to obtain high food yields. The ratio of the kilocalorie return of food energy to the total energy input is relatively low, ranging from 0.65 to 2.52 for the intensive crop production systems discussed...
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