The study was carried out to find out if it is feasible to use guinea pig excretions for the generation of biogas as an alternative energy source at altitudes above 2,500 meters above sea level. Two types of biodigesters were investigated, one discontinuous and the other Taiwanese. The biogas was subjected to a gas chromatography analysis, which showed the concentration in weight and moles of CO2, methane, nitrogen and water, relative density, molecular weight and caloric value. The gas from the discontinuous biodigester was the one with the best results, since its composition had 50.10 % mol of methane.
Se presentan los resultados de caracterizaciones mecánicas de tracción y tenacidad en fibras de agave americana l. nuevas y centarias. Las fibras nuevas fueron obtenidas por extracción manual y enriado, mientras que las fibras centenarias se obtuvieron manualmente de construcción antigua. Las fibras nuevas obtenidas por enriado presentaron mejores propiedades mecánicas, en comparación con las fibras nuevas y centenarias extraídas manualmente, mientras que las fibras centenarias vieron reducidas en un 38% sus propiedades mecánicas respecto a las obtenidas por enriado.
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