Results 61 to 70 of about 586 (176)

Proposed Method For Studying Radon Exhalation

Revista de Gestão Social e Ambiental
Objective: The main objective was to test the closed radon exhalation methodology, with AlphaGuard radon detector, for different grain sizes of a granite rock sampled from central area of Belo Horizonte and propose experimental methods for its determination.
Natália Fonseca Taveira, Laura Cardoso Takahashi, Talita de Oliveira Santos, Adriana de Souza Medeiros Batista, Arno Hereen, Ricardo Gomes Passos   +5 more
openaire   +1 more source

Artificial Neural Network Optimization to Estimate Radon in Soil

Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 18, Issue 5, October 2025.
ABSTRACT Modeling and estimating radon concentration are of crucial interest to support health protection campaigns. In the literature, many studies concentrated on indoor radon, while few of them investigated the outdoor radon spatial distribution and the factors that influence its formation.
Veronica Distefano, Sandra De Iaco, Iman Masoumi   +2 more
wiley   +1 more source

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

Investigation of key parameters influencing 222Rn exhalation rate from selected industrial and environmental samples using AlphaGUARD monitor

Scientific Reports
Radon-222 (222Rn) exhalation from natural and building materials is a significant source of indoor radiation exposure, yet the effects of key physical parameters controlling radon release remain insufficiently understood.
Sahar Elnobi, Zinab Matar, Walaa Mohammed Alahmade, N. K. Ahmed, S. Harb   +4 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

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

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

Gradient chamber for measuring the exhalation rate of radon and thoron from surfaces

Scientific Reports
A novel instrument (gradient chamber) and method for measuring the exhalation rates of radon (²²²Rn) and thoron (²²⁰Rn) from surfaces (e.g., soil, rocks, building materials) have been developed and tested. Determining radon and thoron exhalation rates is
Dobromir S. Pressyanov
doaj   +1 more source