Results 261 to 270 of about 5,440,860 (285)

Radon Exhalation Rate of Some Building Materials Used in Egypt

Environmental Geochemistry and Health, 2005
Indoor radon has been recognized as one of the health hazards for mankind. Common building materials used for construction of houses, which are considered as one of the major sources of this gas in indoor environment, have been studied for exhalation rate of radon.
A F, Maged, F A, Ashraf
openaire   +2 more sources

Development and application of a continuous measurement system for radon exhalation rate

Review of Scientific Instruments, 2011
A continuous measurement system, with a ventilation-type accumulation chamber, was developed for radon exhalation rate determination. A reasonable sampling flow rate for the measurement system was determined by comparing the values obtained by the system with those obtained by a grab sampling method.
Masahiro, Hosoda, Tetsuo, Ishikawa, Atsuyuki, Sorimachi, Shinji, Tokonami, Shigeo, Uchida   +4 more
openaire   +2 more sources

A method for adjusting the exhalation rate and the effective decay constant of a radon exhalation calibration device

Radiation Physics and Chemistry
During radon measurements, radon exhalation monitors are required to be calibrated by a radon exhalation reference device. A reliable correction factor can be obtained only if the effective decay constant used in the calibration matches the one that prevails when the monitor is deployed in the field.
Zhipeng Liu, Jiale Cheng, Shicheng Luo, Zhongkai Fan, Ruomei Xie, Hongzhi Yuan, Yanliang Tan   +6 more
openaire   +1 more source

Influence of the porosity on the ²²²Rn exhalation rate of concrete.

Health physics, 2011
The composition of 23 concrete mixtures was varied in five separate series to evaluate the influence of porosity on the ²²²Rn exhalation rate. In each series, a range in porosities is obtained by varying (1) the amount of cement, (2) type of cement (Portland or blast furnace slag cement), (3) the amount of water at a fixed cement level, (4) addition of
Peter, de Jong, Willem, van Dijk, Mario, de Rooij   +2 more
openaire   +1 more source

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

Experimental Study on the Mechanism of Radon Exhalation During Coal Spontaneous Combustion in Goaf

Tunnelling and Underground Space Technology, 2021
Cunbao Deng
exaly  

Study on the Characteristics of Radon Exhalation From Rocks in Coal Fire Area Based on the Evolution of Pore Structure

Science of the Total Environment, 2023
Liyun Tang, Jishi Geng
exaly  

A Study on the Differences in Radon Exhalation of Different Lithologies at Various Depths and the Factors Influencing Its Distribution in Northern Shaanxi, China

Science of the Total Environment, 2022
Shi Qingmin, Jianjun Hu
exaly  

Radioactivity and Radon Exhalation Rate of Some Granite Building Materials in Türkiye

Applied Radiation and Isotopes
The presence of elevated concentrations of naturally occurring radionuclides in building materials can lead to the generation of high dose rates within indoor environments, resulting from both internal and external exposure pathways. The internal dose is mainly attributable to radon exhalation from the building materials, whereas the external dose is a
openaire   +2 more sources

Radon Exhalation From Temperature Treated Loess

Science of the Total Environment, 2022
Liyun Tang, Jishi Geng, Qiang Sun
exaly