The concentration of Rn also does not depend on the concentration of Ra which is dissolved in these waters. Radon is dissolved as a gas in underground waters in the zone of their outflow to the surface. It is caused by the increase in the emanation coefficient of rocks in the weathering ...
While soil gas flow into residences has been demonstrated, no detailed understanding of the important factors affecting the source strength of radon from soil has yet emerged. Preliminary work in this area has identified a number of likely issues, including the concentration of radium in the soil,...
The main parameters characterizing radon emanation and exhalation rate from building products are the radium activity concentration, the radon emanation coefficient and the radon exhalation rate. Additional parameters characterizing the rate of radon release from the material are the radon diffusion coefficien...
Among the chemical elements and chemical compounds that promote life and its evolution on the earth, there are some which have toxic effects on plant life, animals and human beings. A lot of the chemicals released follow more or less complex cycles of different duration, during the course of ...
The 13C signature is evaluated for various environmental compartments (vegetation, soils, soil gas, rock and groundwater) for three crystalline rock terrai
Indoor radon survey and gamma activity measurements in soil samples were carried out in the Giresun province (Northeastern Turkey). The result of analysis ... N Celik,U Cevik,A Celik,... - 《Journal of Environmental Radioactivity》 被引量: 103发表: 2008年 Possible Processes for Origin of Lif...
Thesis--Catholic University of America. Bibliography: p. 34. Microfilm. Carter,C James 被引量: 0发表: 0年 Dissolved uranium, radium and radon evolution in the Continental Intercalaire aquifer, Algeria and Tunisia - ScienceDirect Natural, dissolved ~(238)U-seriesadionuclides (U, ~(226)Ra, ~...
Neuropeptides are small proteins in the brains of all animals that bind to receptor proteins and cause activity in cells. The researchers at Queen Mary University of London, led by Professor Maurice Elphick, were investigating whether a particular sea ur
RadonGas FlowPollution SourcesSoil ChemistryIndoor radon concentrations one to two orders of magnitude higher than the US average of approx.60 Bq m sup -3 (approx.1.5 pCi L sup -1 ) are not uncommon, and concentrations greater than 4000 Bq m sup -3 have been observed in houses in areas...
The existence of radioactive gaseous radon in natural gas puts a hazardous impact on human health and gas production equipment. A review of the literature on radon concentrations in natural gas produced from gas reservoirs in China and the other countries have been studied. Radon is a decay ...