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Radon and thoron exhalation rate map in Japan

Radon and thoron exhalation rate map in Japan
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Measurement of Radon Exhalation Rate from Walls

Measurement of Radon Exhalation Rate from Walls
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Effect of Humidity on Radon Exhalation Rate from Concrete

Effect of Humidity on Radon Exhalation Rate from Concrete
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Radon and thoron exhalation rates and their some correlating factors

Radon and thoron exhalation rates and their some correlating factors
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Factors Controlling Measurements of Radon Mass Exhalation Rate

Journal of Environmental Radioactivity, 2005
Radon mass exhalation rate of soil samples was measured using an exhalation chamber of 10 dm(3) volume and a Lucas cell. The results show that mass of sample, grain size and water content influence the radon mass exhalation rate. For soil of (226)Ra activity concentration about 2500 Bq kg(-1) and samples within the range from 0.20 kg to 0.50 kg, the ...
Chau Nguyen Dinh, Nguyễn Đình Châu
exaly   +3 more sources

Effect of Carbonation on Radon Exhalation Rate in Concrete

ACI Materials Journal, 2022
Crushed rock aggregates may lead to unhealthy concentrations of radon gas in concrete buildings. The radon exhalation rate isdependent not only on the concrete mixture but also on its microstructure.
Magnus J. Döse, Johan L. Silfwerbrand
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Study on the Influence of Water Saturation on Radon Exhalation Rates of Rocks

Science of the Total Environment
The radon exhalation characteristics of rocks will change significantly during water saturation treatment, and radon, as an important tracer, is of great significance in predicting rock activities. In this paper, the radon exhalation characteristics of rocks after saturated with different water contents were studied by centrifugal test, radon ...
Pengfei, Li, Qiang, Sun, Lin, Cong
exaly   +3 more sources

Diffusion Model of Radon Exhalation Rates

Health Physics, 1998
Radon migration through walls is considered using an effective diffusion model. One and two dimensional models as well as a spherical geometry are compared. It is concluded that either the 1-dimensional or spherical model, both having analytical solution, may be used for practical purposes. Application is made for typical cases in Athens, Greece.
M, Antonopoulos-Domis, P, Kritidis, C, Raptis   +2 more
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Postprandial Changes in the Exhalation Rate of Radon Produced in Vivo

Science, 1978
The rate of exhalation of radon by persons with long-standing radium burdens increases about twofold shortly after a meal. The increase is short-lived and "normal" values are regained in 1.5 to 2 hours. The effect may account in part for the poor reproducibility in estimates of the freely emanating part of the radium content.
J, Rundo, F, Markun, J Y, Sha
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Radon Exhalation Rate from Various Building Materials

Health Physics, 1993
Solid-state alpha-track detectors using cellulose nitrate films were used to measure the radon exhalation rates from building materials. The radon flux emitted from the surface of the building material was measured by placing an inverted cup on the top of the building material. Cellulose nitrate film was placed within the cup.
C J, Chen, P S, Weng, T C, Chu
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