Nuclear Engineering and Technology, 2023 Radon is a radioactive gas produced from the uranium-238 series. Radon gas affects public health and is the second cause of lung cancer. The study samples were collected from one area of the city of Jazan, southwest of the Kingdom of Saudi Arabia. The influence of engineering and physical parameters on the emanation coefficient of gas and other gas ...
A Azazi
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Influence of various factors on the value of thoron emanation coefficient [PDF]
Journal of Radioanalytical and Nuclear Chemistry, 2021 AbstractThe “powder sandwich” method was adapted to the measuring equipment at the Laboratory of Radiometric Expertise, IFJ PAN (Kraków, Poland). The versatility of the method has been confirmed. The values of thoron emanation coefficients (f) for 16 materials have been determined. It has been found that the value of thoron emanation coefficient is not
Karolina Danyłec +4 more
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Radon Emanation Phenomena: A Probabilistic Basis to Estimate Radon Emanation Coefficients Based on Its Zigzag Travel [PDF]
Journal of Nuclear Science and Technology, 2008 Previous theoretical approaches based on mathematical models by other researchers to the subject of radon emanation assumed straight linear travel of radon generated in grains constituting rocks or soils. However, it is difficult for these approaches to explain high radon emanation coefficients for rocks or soils without the introduction of the ideas ...
Tomozo SASAKI, Yasuyoshi GUNJI
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Geologic and climatic controls on the radon emanation coefficient
Environment International, 1996 Abstract Geologic, pedologic, and climatic factors, including radium content, grain size, siting of radon parents within soil grains or on grain coatings, and soil moisture conditions, determine a soil's emanating power and radon transport characteristics.
R.Randall Schumann, Linda C.S. Gundersen
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High Radon Emanation Coefficients of Porous Matters Produced through Filtration and Precipitation [PDF]
Journal of Nuclear Science and Technology, 2008 Previous theoretical predictions of high radon emanation coefficients were verified in experiments using porous matters artificially produced through filtration and precipitation. Such porous matters were prepared by replicating uranium-bearing waste generating processes used in fuel fabrication facilities in Japan except that radium was employed ...
Tomozo SASAKI, Yasuyoshi GUNJI
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Theoretical Estimation of Radon Emanation Coefficients for UO2Particles Deposited on Surfaces of Uranium-bearing Wastes [PDF]
Journal of Nuclear Science and Technology, 2007 In nuclear fuel fabrication facilities, fine particles of UO2 deposit on the surfaces of walls, equipment, ventilation filters, etc. which may finally become uranium-bearing wastes when these items are removed or replaced. Radon is one progeny of uranium and emanates from those wastes.
Tomozo SASAKI +2 more
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LXI. A comparison of the coefficients of diffusion of thorium and actinium emanations, with a note on their periods of transformation [PDF]
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1912 n ...
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Decontamination of Sludgelike Uranium-Bearing Wastes: Decontamination Feasibility Judgment Using Radon Emanation Coefficients and Development of Decontamination Methods [PDF]
Journal of Nuclear Science and Technology, 2008 It is difficult to decontaminate sludgelike uranium-bearing wastes by wet methods, such as employing nitric acid for selective uranium dissolution. This is because these uranium-bearing wastes have very small pores inside which uranium is deposited, and the decontamination liquid cannot get inside the pores and so cannot dissolve the uranium.
Tomozo SASAKI +7 more
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Journal of Mechanics, 2002 AbstractA computational model for flow in a plain-orifice atomizer is established to examine the inlet and geometry effects on discharge coefficients. The volume of fluid (VOF) method with finite volume formulation was employed to capture the liquid/gas interface. A continuum Surface Force (CSF) model was adopted to model the surface tension.
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Effects of Different Irrigation Regimes, Nitrogen Levels and Storage Conditions on Volatiles of 'Gala' Apple. [PDF]
Molecules, 2023 Tavares C +11 more
europepmc +1 more source