Results 301 to 310 of about 950,858 (353)
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Diffusion Isotope Effects in Isotope Mixtures
Berichte der Bunsengesellschaft für physikalische Chemie, 1972AbstractThe tracer diffusion of deuterium and tritium in the β‐phase of PdHn has been measured by means of special techniques, the time lag method with mass spectrometer or counter tube as detector, and the decay function of isotope exchange. It has been found that D atoms as tracer in β‐PdHn, i.e.
B. Bonn, E. Gans, G. Sicking, E. Wicke
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Isotopic catalysis and isotopic analysis
Russian Journal of Physical Chemistry B, 2013Isotopes with magnetic nuclei accelerate the biochemical reactions of adenosine triphosphate synthesis by a factor of two to three. An isotope effect in which isotopes are preserved in the reaction system is known as isotopic catalysis. It has been revealed in enzymatic reactions catalyzed by magnesium, zinc, and calcium ions.
S. E. Arkhangel’skii +4 more
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Isotopically pumped isotopic CF_4 laser
Journal of the Optical Society of America, 1982Single-mode optical pumping of CF4 to generate 16-μm frequencies has been extended to include the isotopic species 12CF413CF4, and 14CF4 for the lasing medium and 16O12C16O and 18O12C18O for the CO2 pump laser. Thirty-three lasing transitions, between 614 and 645 cm−1, and their respective energies are reported and discussed in relation to pertinent ...
Roger Eckhardt, John Telle, Larry Haynes
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Terra Nova, 1998
The closure of isotopic chronometers to loss or exchange of radiogenic daughters is best analysed in terms of phenomena that induce recrystallization, i.e. fluid circulation and strain. In the presence of these fast phenomena, temperature is not a rate‐controlling parameter for isotope transport. Only in those rare instances where no fast mechanism can
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The closure of isotopic chronometers to loss or exchange of radiogenic daughters is best analysed in terms of phenomena that induce recrystallization, i.e. fluid circulation and strain. In the presence of these fast phenomena, temperature is not a rate‐controlling parameter for isotope transport. Only in those rare instances where no fast mechanism can
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Electrochemical Isotope Effect and Lithium Isotope Separation
Journal of the American Chemical Society, 2009A large electrochemical isotopic effect is observed upon the electrodeposition of lithium from solutions of propylene carbonate producing isotopically light metal deposits. The magnitude of fractionation is controlled by the applied overpotential and is largest close to equilibrium.
Jay R, Black +4 more
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