Results 61 to 70 of about 571 (174)

Radon Gas Concentrations in Soil and Radon Exhalation Rates in Thiqar City

Engineering and Technology Journal, 2016
First part to determination concentrations of Rn-222 in surface samples of soil, the highest average concentration of Rn-222 was found in AL-Refai region was equal to (127.500±2 Bq/m3), while lowest the average was found in AL-Aekeckh region which was equal to (33.750±2.2 Bq/m3), with an average value of (75.875±21.8 Bq/m3) ,while the (RER) was found ...
Nada F. Tawfiq, Hazim L. Mansour, Mahmood S. Karim   +2 more
openaire   +2 more sources

Verification of the applicability of the RAD7 radon monitor to the solid radon source exhalation reference model

Nuclear Engineering and Technology
The RAD7 radon monitor, based on the electrostatic collection method, is sensitive to humidity during measurements, necessitating the use of a desiccant to maintain the relative humidity in its built-in chamber less than 10 %.
Huiying Li, Ruomei Xie, Zhongkai Fan, Shuaibin Liu, Shuai Yuan, Jiale Sun, Haibo Yi, Zhipeng Liu, Jiulin Wu, Hongzhi Yuan, Yanliang Tan   +10 more
doaj   +1 more source

Radon exhalation rate from the latex pillows and its potential exposure to users

Radiation Medicine and Protection
Objective: To develop a new system to accurately measure the radon exhalation from the latex pillows, and to estimate its potential exposure to users. Methods: The new system is composed of two loops, the first loop is designed to trap background radon ...
Phachirarat Sola, Kanokporn Boonsirichai, Santi Raksawong, Ritiron Samran, Pimprapa Chaijak, Hirofumi Tazoe, Chutima Kranrod, Rawiwan Kritsananuwat, Sattawat Jongjitklang, Vichai Puripunyavanich, Masahiro Hosoda, Waleeporn Pongkua, Shinji Tokonami   +12 more
doaj   +1 more source

Natural Radionuclides and Radon Exhalation Rate in the Soils of Cauvery River Basin

Air, Soil and Water Research, 2017
In this study, systematic measurement of activity concentrations of 40 K, 226 Ra, and 232 Th and radon exhalation rate has been done in soil samples of Cauvery River environment.
CS Kaliprasad, PR Vinutha, Y Narayana
doaj   +1 more source

Radon exhalation rates corrected for leakage and back diffusion – Evaluation of radon chambers and radon sources with application to ceramic tile

Journal of Radiation Research and Applied Sciences, 2014
The natural radon decay, leakage and back diffusion are the main removal processes of radon from its container. Ignoring these processes leads to underestimate the measured value of radon related parameters like exhalation rate and radium content.
M. Abo-Elmagd
doaj   +1 more source

Estimation of indoor radon levels using etched track detector

Journal of Radiation Research and Applied Sciences, 2018
In this investigation, the activity levels of Indoor Radon-222, effective radium contents, exhalation rate of radon, and annual effective dose are reported for different indoor locations (Offices, Laboratories, Meeting rooms, and Storerooms) at two ...
Basma A. El-Badry, Tayseer I. Al-Naggar
doaj   +1 more source

Radon exhalation and emanation assessments in the Transdanubian Central Mountain in Hungary

Radiation Medicine and Protection
Objective: To determine the radium-226 activity concentration, the massic radon exhalation rate and emanation factor of 55 soil samples from the Central Transdanubian Mountains in Hungary as well as possible radon exhalation hotspots in the sampling area
Maté Novák, Zsolt Homoki, Gergely Tóth, Anita Csordás, Edit Tóth-Bodrogi, Miklós Hegedűs, Tibor Kovács   +6 more
doaj   +1 more source

Experimental study on radon exhalation characteristics of coal samples under varying gas pressures

Results in Physics, 2018
Coal and gas outburst during underground mining operations negatively affects the mining safety and decrease the mining productivity. Current outburst prediction has been largely relying on seismic monitoring which is passive and extremely difficult to ...
Jianping Wei, Pengfei Cui, Zhongwei Chen, Banghua Yao, Chunshan Zheng, Bing Jia, Xiaochuan Wang   +6 more
doaj   +1 more source

High-resolution spatiotemporal mapping of soil radon exhalation in China combining remote sensing and machine learning

Environment International
Radon (Rn), primarily generated via radium (Ra) decay in soil and exhaled across the soil–air interface, is a key source for natural ionizing radiation exposure.
Yupan Zhang, Weihai Zhuo, Bo Chen, Bin Feng   +3 more
doaj   +1 more source

A study of radon emitted from building materials using solid state nuclear track detectors

Journal of Radiation Research and Applied Sciences, 2015
Radon is a natural radioactive gas derived from geologic materials. Inhalation of the short-lived decay products of radon has been linked to an increase in the risk of developing lung cancers if present at elevated levels.
Rafat M. Amin
doaj   +1 more source