Results 191 to 200 of about 128,528 (226)

Natural Radioactivity in Bananas

AIP Conference Proceedings, 2008
The content of 40K natural radionuclide in bananas (Musa sapientum) from the Vale do Ribeira region, Sao Paulo, Brazil, has been measured. We have collected several samples of bananas prata and nanica, its peels, leaves, and also different soils where the banana tree was planted, such as soil with a standard amount of fertilizer, the fertilizer itself ...
V. A. B. Zagatto, N. H. Medina, E. Okuno, N. K. Umisedo, Anselmo Salles Paschoa, Friedrich Steinhäusler   +5 more
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Radioactivity, artificial and natural

Electrical Engineering, 1938
In a very few years after its discovery in 1898, radioactivity became and has ever since remained the most celebrated subdivision of modern physics. In addition to substances naturally radioactive, such as radium, others may be made so artificially; in fact, of all the known elements, hydrogen alone remains the only one of which a radioactive type has ...
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Natural Radioactivity of Rhenium

Physical Review, 1954
An attempt to confirm the reported $K$ capture activity of ${\mathrm{Os}}^{187}$, using Os${\mathrm{O}}_{4}$ mixed with argon as the counter gas, failed to reveal any activity corresponding to a half-life of less than ${5\ifmmode\times\else\texttimes\fi{}10}^{11}$ years.
A. D. Suttle, W. F. Libby
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Natural Radioactivity in Monitoring Waste Disposals

Physica Scripta, 2001
Monitoring large (underwater) surfaces, with strongly varying composition, requires a sampling density, exceeding the capabilities of standard techniques. These techniques involve sample collection and a number of treatments and measurements in laboratory; both steps are laborious, tedious and costly. This paper shows that a trailing detector system of
de Meijer, R.J., Limburg, J., Venema, L.B.   +2 more
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Technologically enhanced naturally occurring radioactive materials

Clinical Toxicology, 2009
Naturally occurring radioactive materials (NORM) are ubiquitous throughout the earth's crust. Human manipulation of NORM for economic ends, such as mining, ore processing, fossil fuel extraction, and commercial aviation, may lead to what is known as "technologically enhanced naturally occurring radioactive materials," often called TENORM. The existence
David, Vearrier, John A, Curtis, Michael I, Greenberg   +2 more
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Natural radioactivity in Algerian building materials

Applied Radiation and Isotopes, 2001
Samples of natural and manufactured building materials collected from Algiers have been analysed for 226Ra, 232Th and 40K using a high-resolution HPGe gamma-spectrometry system. The specific concentrations for 226Ra, 232Th and 40K, from the selected building materials, ranged from (12-65 Bq kg(-1)), (7-51 B qkg(-1)) and (36-675 Bq kg(-1)), respectively.
D, Amrani, M, Tahtat
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Leachability of naturally occurring radioactive materials

Journal of Radioanalytical and Nuclear Chemistry, 2006
Naturally occuring radioactive materials (NORM) are present in the environment and can be concentrated by technical activities, particularly those involving natural resources. These NORM deposits are highly stable and very insoluble under environmental conditions at the earth's surface. However, reducing or oxidant conditions or pH changes may enable a
DESIDERI, DONATELLA, FEDUZI, LAURA, MELI, MARIA ASSUNTA, ROSELLI, CARLA   +3 more
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Natural radioactivity in groundwater – a review

Isotopes in Environmental and Health Studies, 2011
The issue of natural radioactivity in groundwater is reviewed, with emphasis on those radioisotopes which contribute in a significant way to the overall effective dose received by members of the public due to the intake of drinking water originating from groundwater systems.
Nguyen, Dinh Chau, Marek, Dulinski, Pawel, Jodlowski, Jakub, Nowak, Kazimierz, Rozanski, Monika, Sleziak, Przemyslaw, Wachniew   +6 more
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Natural radioactivity in water

Journal of the Society for Radiological Protection, 1982
In December 1979 the Commission of the European Communities held a seminar on the Radiological Burden of Man from Natural Radioactivity in the countries of the European Communities. The published proceedings contain a number of papers about radioactivity in water and one of them gave a summary of information on British waters. The present purpose is to
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Natural Radioactive Decay Chains

2011
Shell effects on nuclear stability have created an island of relative stability for nuclides near A = 230–240 and Z = 90–92. Three nuclides, Th, U, and U, have half-lives long enough for significant amounts to have survived since the heavy elements in the Earth’s crust were created.
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