The kinetic distribution of hydrogen atoms back-exchanging from tritium-labeled proteins has been estimated from the results of interrupted flow and slow, continuousflow gel filtration. Staphylococcal nuclease exchanges almost all of it bound tritium atoms in a few hours at pH 8.1, but in the presence of calcium ions and deoxythymidine 3’,5’-diphosphate about 34 hydrogen atoms remain associated...

This paper summarizes some of the methods applicable for low level tritium detection needed in the search for anomalous fusion in metal hydrides. It is also intended to further detail our tritium and neutron results that have been obtained with the Pd-Si-D system, originally presented at earlier workshops . A measure of reproducibility that was not evident in our previous work has been achieved...

Parenchymal cells isolated from the liver of 24 h fasted rats were incubated with 65 mM R,S-1-3H -ethanol plus 3 mM pyruvate as substrates in the absence and presence of 1.7 mM 4-methylpyrazole. Metabolite levels and the time-course of the transfer of tritum from ethanol to lactate and beta-hydroxybutyrate was measured during the first 15 min of ethanol metabolism. The time-course of the loss o...

Tritium is the heaviest and the only radioactive isotope of hydrogen. It decays to the stable isotope 3He by emitting low energy electrons. The short range and low energy of β‐ rays gives rise to almost complete absorption of the radiation energy within the biological matter. While some beta particles can penetrate human skin, tritium's beta particles do not have enough energy to do so. Tritium...

In cavitation experiments with deuterated acetone, tritium decay activity above background levels was detected. In addition, evidence for neutron emission near 2.5 million electron volts was also observed, as would be expected for deuterium-deuterium fusion. Control experiments with normal acetone did not result in tritium activity or neutron emissions. Hydrodynamic shock code simulations suppo...

Hydrogenated amorphous silicon betavoltaic devices are studied both by simulation and experimentally. Devices exhibiting a power density of 0.1 W/cm 2 upon Tritium exposure were fabricated. However, a significant degradation of the performance is taking place, especially during the first hours of the exposure. The degradation behavior differs from sample to sample as well as from published resu...

A concise overview is given on materials applied in fusion technology. The influence of plasma operation on the behaviour of reactor components and diagnostic systems is discussed with emphasis on effects caused by fast particles reaching the reactor wall. Issues related to primary and induced radioactivity are reviewed: tritium inventory and transmutation. Tritium breeding in the reactor blank...

Rabbit muscle lactate dehydrogenase, following equilibration at pH 10 with lactate-2-3H, was precipitated by perchloric acid or reversibly denatured by 8 M urea. The enzyme protein after either method of inactivation was found to contain about 0.5 g atom of tritium label per 132,000 g of protein. The urea-denatured, labeled enzyme, after isolation by Sephadex chromatography and partial reactiva...

The beta-decay of a tritium nucleus produces an entangled quantum system, a beta electron, a helium nucleus, and an antineutrino. For finite collapse times, the postcollapse beta electron energy can originate from a range of pre-collapse energies due to the uncertainty principle. Long collapse times give negligible uncertainty, so the pre-collapse spectrum must approach that of isolated nuclei....

It is generally accepted that the C-20 cation or its stabilized equivalent is an intermediate in the biosynthesis of certain triterpenes and sterols. To evaluate this hypothesis the biosynthesis of the protosterol fusidic acid was investigated. Fusidic acid was biosynthesized by incubating the fungus Fusidium coccineum on a medium containing (3RS,4R)(2-14C,4-3H)-meva10nic acid (MVA). The obtain...