Results 221 to 230 of about 4,137,537 (260)

Mercury-206: a New Natural Radionuclide

Nature, 1961
ACCORDING to Cameron's mass formula1, the value of Q α for lead-210 (radium D) should be 3.566 MeV., which would indicate an alpha half-life of the order of 1010 years and an alpha-branching of the order of 10−9. The same source gives 1.361 MeV. for the Q β of the hitherto unknown mercury-206, which is formed from lead-210 by alpha decay. From a closed
M. NURMIA, P. KAURANEN, M. KARRAS, A. SIIVOLA, A. ISOLA, G. GRAEFFE, A. LYYJYNEN   +6 more
openaire   +1 more source

Environmental assessment of natural radionuclides and trace elements around Seyitömer coal fired power plant

Journal of Radioanalytical and Nuclear Chemistry, 2023
B. Yoho, E. Güler, B. Canbaz Öztürk, M. Yoho   +3 more
semanticscholar   +1 more source

Adsorption of natural radionuclides on pyrolusite

Water, Air, and Soil Pollution, 1987
Analysis of Ra, Th, and Po in water samples and low active effluents from a U mining and milling complex generally involves pre-concentration of samples carried out by co-precipitation or by evaporation. This paper describes an alternative method by way of adsorption of these radionuclides on pyrolusite pebbles in a column and their subsequent elution ...
openaire   +1 more source

Natural Contamination in Radionuclide Detection Systems

IEEE Transactions on Nuclear Science, 1981
Through the use of low-level gamma-ray spectrometry, clean material for construction of radionuclide detection systems has been identified. In general aluminum contains high quantities of 232Th and 238U with minimal quantities of 40K. Stainless steels contain 60Co.
openaire   +1 more source

Natural radionuclides in electronic waste: an initial approach

Environmental Technology, 2017
Some radionuclides are present in trace amount in the raw material of electronic devices that suffer obsolescence and are improperly disposed of. Obsolete personal computers become electronic waste and may contain potential environmental contaminants. Furthermore, there may be an additional concern: the ionizing radiation emission.
Arykerne Nascimento Casado, da Silva, José Araújo Dos, Santos Júnior, Romilton Dos Santos, Amaral, José Wilson, Vieira, Carlos Alberto Alves, Barreto   +4 more
openaire   +2 more sources

Correlation Analysis of Natural Radionuclides, Radon Exposure, Soil Particles, and Moisture from Quarry Towns in Greater Accra Region, Ghana

Water, Air and Soil Pollution, 2022
F. Otoo, E. Darko, M. Garavaglia
semanticscholar   +1 more source

Nuclear-physical characteristics of natural radionuclides

Soviet Atomic Energy, 1986
The authors present an equation for the dose rate produced by a layer of material uniformly saturated with radionuclides which is proportional to their effective specific activity. The initial data and the calculated activities of the natural radionuclides /sup 238/U, /sup 235/U, /sup 226/Ra, /sup 232/Th, and /sup 40/K are presented.
openaire   +1 more source

Natural gamma-emiting radionuclides in Pakistani Portland cement

Applied Radiation and Isotopes, 2001
Studies of the natural gamma-emitting radionuclides in Portland cement manufactured in the North West Frontier Province (NWFP) of Pakistan and the various raw materials which compose the product have been carried out using gamma-spectrometric techniques. For data acquisition a high-purity germanium detector (HPGe) was used.
K, Khan, H M, Khan
openaire   +2 more sources

Determination of natural radionuclides and radioactive minerals in urban coastal zone of South India using Geospatial approach

Journal of Radioanalytical and Nuclear Chemistry, 2022
K. Manikanda Bharath, U. Natesan, S. Chandrasekaran, S. Srinivasalu   +3 more
semanticscholar   +1 more source

Radiation doses to aquatic organisms from natural radionuclides

Journal of Radiological Protection, 2004
A framework for protection of the environment is likely to require a methodology for assessing dose rates arising from naturally occurring radionuclides. This paper addresses this issue for European aquatic environments through a process of (a) data collation, mainly with respect to levels of radioactivity in water sediments and aquatic flora and fauna,
J E, Brown, S R, Jones, R, Saxén, H, Thørring, J, Vives i Batlle   +4 more
openaire   +2 more sources