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Downflow Forced-Convection Boiling of Water in Uniformly Heated Tubes
None
Date:
August 21, 1961
Creator:
Wright, R. M.
System:
The UNT Digital Library
THERMOLUMINESCENCE SPECTRA AND ACTIVATION ENERGIES FOR AROMATIC AMINO ACIDS, TRYPSIN, AND SPORES OF BACILLUS MEGATERIUM
The theory of thermoluminescence is reviewed. The spectral distribution of thermoluminescence and the activation energies associated with peaks of the glow curves were determined for samples of aromatic amino acids, trypsin, and spores of Bacillus megaterium irradiated by a Co/sup 60/ gamma source. All of the substances, except phenylalanine, exhibited a readily observable long-lived glow that persisted up to at least 2 hr following irradiation. Possible reaction mechanisms in the production of thermoluminescence in biological materials are discussed. (C.H.)
Date:
June 21, 1963
Creator:
Weinberg, C. J.; Carter, J. G.; Nelson, D. R. & Birkhoff, R. D.
System:
The UNT Digital Library