Results 161 to 170 of about 54,522 (197)

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.
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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
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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.
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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
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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
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Natural radionuclide distribution in soils of Gudalore, India

Applied Radiation and Isotopes, 2000
The concentration of primordial radionuclides in soil samples of Gudalore Taluk in the Udagamandalam district has been measured from the gamma ray spectrum of the soil. The mean activities of 232Th, 238U and 40K are 75.3 +/- 44.1, 37.7 +/- 10.1 and 195.2 +/- 85.1 Bq kg-1 dry weight, respectively.
S, Selvasekarapandian, R, Sivakumar, N M, Manikandan, V, Meenakshisundaram, V M, Raghunath, V, Gajendran   +5 more
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Naturally Occurring Radionuclides

2005
M.I. Ojovan, W.E. Lee
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Natural radionuclides in Greek raisins

Journal of Food Composition and Analysis, 2023
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Radionuclides in Nature

1995
GREGORY R. CHOPPIN, JAN-OLOV LILJENZIN, JAN RYDBERG   +2 more
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