the technique for acoustic emission was applied to monitoring the start-up and steady state operation of a component in a steam-methane reformer furnace. this particular structure is characterized by the presence of high- level extraneous noise and high skin temperature. four independent transducers were mounted on waveguides which were welded to reference pins on the structure. analysis of the emitted signals involved determination of the event rate and total counts ...
The solid phase Cobalt-60 radiolysis of acetonitrile was investigated. Free radicals produced during the exposure to gamma rays were studied with an electron-spin resonance spectrometer and the final products were determined by gas chromatography and mass spectrometry. Predominant products are hydrogen, methane, and succinonitrile. The reaction paths to these products are inferred from, and consistent with, the ESR spectra of the trapped free radicals. (uthor)