Results 11 to 20 of about 11,026 (264)
Bohr-Weisskopf effect in the potassium isotopes
Physical Review C, 2023 The magnetic hyperfine structure constants have been calculated for low-lying levels in neutral potassium atom taking into account the Bohr--Weisskopf (BW) and Breit--Rosenthal (BR) effects. According to our results the $4p_{1/2}$ state of K~I is free from both BR and BW corrections on the level of the current theoretical uncertainties.
Yu. A. Demidov +3 more
openaire +2 more sources
Anais da Academia Brasileira de Ciências, 2022 We present the analysis of airborne and ground gamma-ray spectrometry signatures of the Araguainha impact structure, located in central Brazil, the largest impact structure in South America with ~ 40 km diameter.
EMILSON P. LEITE +4 more
doaj +1 more source
Radioactivity assessment of selected samples of foodstuffs in the local market
Tikrit Journal of Pure Science, 2022 The research aims to evaluate the radioactivity of samples of foodstuffs Consumables in the local markets thirteen items were selected which are rice, tea, drinking water, lentils, chickpeas, flour, red bean, crushed chickpeas and milk powder where ...
Esam S. Ali +2 more
doaj +1 more source
Journal of Kufa-Physics, 2018 The specific concentration of radioisotopes of Potassium 40K; Cesium 137Cs and Radium (224Ra ,226Ra, 228Ra) have been identified for soil, sediment, fish samples (Liza abu, Liza klunzingeri, Brachirus orientalius, Tylosurus crocodilus, Cyprinus carpio ...
Aqeel Abdulsahib Alwaeli +1 more
doaj +1 more source
Frontiers in Environmental Science, 2023 The Kunteyi Basin, located in northern Qaidam, is known as a significant potash ore deposit in China. It is of great significance to study the origin of the potassium-rich intercrystalline brine to support the exploitation of potassium salts.
Qianhui Ren +7 more
doaj +1 more source
Thallium Use, Toxicity, and Detoxification Therapy: An Overview
Applied Sciences, 2021 Thallium (Tl) is released into the environment, where is present at very low levels, from both natural and anthropogenic sources. Tl is considered as one of the most toxic heavy metals; it is a non-essential metal, present in low concentrations in humans.
Giuseppe Genchi +4 more
doaj +1 more source
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
openaire +4 more sources
Sensors, 2023 Online monitoring is a key challenge for the continued development of molten salt reactor (MSR) technology. Laser-induced breakdown spectroscopy (LIBS) has previously been demonstrated to be a viable tool for monitoring aerosolized species and noble ...
Hunter B. Andrews, Joanna McFarlane
doaj +1 more source
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
doaj +1 more source
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
openaire +2 more sources