Results 21 to 30 of about 11,258 (258)
MAPPING OF HISTORICAL HUMAN ACTIVITIES IN THE SALDANHA BAY MILITARY AREA
Scientia Militaria, 2012 Saldanha Bay on the west coast of South Africa is surrounded by various nature reserves, military units and training sites. Over a long period of time, large parts of this semi-arid area were exposed to human activities, including military training and ...
Jacques Bezuidenhout
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Potassium isotopic compositions of enstatite meteorites
Meteoritics & Planetary Science, 2019 AbstractEnstatite chondrites and aubrites are meteorites that show the closest similarities to the Earth in many isotope systems that undergo mass‐independent and mass‐dependent isotopic fractionations. Due to the analytical challenges to obtain high‐precision K isotopic compositions in the past, potential differences in K isotopic compositions between
Zhao, Chen +7 more
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Evidence for a New Isotope of Potassium [PDF]
Physical Review, 1949 A study of the potassium isotopes produced by the bombardment of argon with helium ions reveals the presence of a hitherto unknown isotope with a 22.4 hour half-life. The new potassium isotope has two beta-components of approximately 0.25-Mev and 0.8-Mev maximum energies. A gamma-component is present of roughly 0.4-Mev energy.
Overstreet, Roy +2 more
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Charge radii of potassium isotopes in the RMF (BCS)* approach * [PDF]
Chinese Physics C, 2022 Abstract We apply the recently proposed RMF (BCS)* ansatz to study the charge radii of the potassium isotopic chain up to 52K. It is shown that the experimental data can be reproduced rather well, qualitatively similar to the Fayans nuclear density functional theory, but with a slightly better description of the odd–even staggerings (OES)
An, Rong +3 more
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Isotope Abundances for Potassium of Biological Origin
Experimental Biology and Medicine, 1967 SummaryThe results of measurements of potassium-39/potassium-41 isotope ratios on biological samples presented in this paper do not support earlier claims (4,7,8) that the isotopes of potassium are fractionated by biological systems. Ratios obtained for potassium nitrate isolated from normal and malignant human tissues, pig and human foetal tissue and ...
S H, Chorlton, J H, Green, D P, Mellor
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Physiological importance and role of Mg2+ in improving bacterial resistance to cesium
Frontiers in Microbiology, 2023 Cesium (Cs) is an alkali metal with radioactive isotopes such as 137Cs and 134Cs. 137Cs, a product of uranium fission, has garnered attention as a radioactive contaminant.
Yoshiki Ishida +6 more
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Investigating the functional conditions of heavy water condenser electrolysis used in Isfahan Zero Power Reactor [PDF]
مجله علوم و فنون هستهای, 2023 The quality of heavy water performance in atomic power plants as a substitute for neutron particles depends on its degree of purity. The concentration of heavy water in the nuclear industry is of significant importance. The Heavy Water Reactor of Isfahan,
S. Salahi +3 more
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Isotope separation of Potassium with a magneto-optical combined method [PDF]
Frontiers of Physics, 2021 Due to the similar physical and chemical properties, isotopes are usually hard to separate. On the other hand, the isotope shifts are very well separated in a high-resolution spectrum, making them possible to be addressed individually by lasers, thus separated. Here we report such an isotope separation experiment with Potassium atoms.
Zeng, Zixuan, Li, Shangjin, Yan, Bo
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Geosciences, 2017 Building materials can contribute to ionizing radiation hazards due to their variable content in radioactive isotopes. Uranium, thorium, and potassium radioisotopes are present in various building materials due to their presence in raw materials ...
Marco Lima +2 more
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Вестник войск РХБ защиты, 2020 The Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on Their Destruction places CN-containing toxic chemicals like tabun and its numerous homologues and analogues (around 10.000 organic compounds),
D. O. Korneev +4 more
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