RESUMEN

We report on a device which filters microwave radiation prone to heating cryogenic experiments while at the same time allowing large apertures which will not disturb a propagating beam. A method for evaporating thin films onto the inner face of a narrow tube is also described.

RESUMEN

A procedure for analyzing gaseous products resulting from metabolic processes of microorganisms has been developed. The procedure allows a distinct separation of gaseous products (H2, O2, N2, CO2, H2O, etc). The relative error ranges from 3.4 to 2.9% depending on the concentration of the gas in the volume tested.

Asunto(s)

Gases/metabolismo , Lactobacillus acidophilus/metabolismo , Amoníaco/metabolismo , Dióxido de Carbono/metabolismo , Cromatografía de Gases/métodos , Etanol/metabolismo , Hidrógeno/metabolismo , Oxígeno/metabolismo , Agua/metabolismo