Results 11 to 20 of about 10,473 (258)

The presence and dosimetry of radon and thoron in a historical, underground metalliferous mine [PDF]

Journal of Sustainable Mining, 2018
A combination of long term passive, and short term active radon-222, radon-220 and respective progeny measurements were conducted in both traverse and longitudinal axes of a historical metalliferous underground mine in North Queensland, Australia.
Ross Kleinschmidt, Drew Watson, Miroslaw Janik, Gavin Gillmore   +3 more
doaj   +4 more sources

Utilization of radiometric data for mapping primary and secondary sources of gamma radiation and radon/thoron release potentials in Ireland [PDF]

Frontiers in Public Health
BackgroundThis paper presents a novel approach to predict and map radon and thoron levels. We developed separate radon and thoron prediction maps for Ireland and introduced a system for producing high-resolution 3D radiation maps which may be used for ...
Mirsina M. Aghdam, Mirsina M. Aghdam, Mark Kavanagh, Quentin Crowley, Quentin Crowley   +4 more
doaj   +2 more sources

Potential inhibitory effects of low-dose thoron inhalation and ascorbic acid administration on alcohol-induced hepatopathy in mice. [PDF]

J Radiat Res, 2022
Although thoron inhalation exerts antioxidative effects in several organs, there are no reports on whether it inhibits oxidative stress-induced damage.
Kataoka T, Ishida T, Naoe S, Kanzaki N, Sakoda A, Tanaka H, Mitsunobu F, Yamaoka K.   +7 more
europepmc   +2 more sources

Characteristics of Thoron (²²⁰Rn) and Its Progeny in the Indoor Environment. [PDF]

Int J Environ Res Public Health, 2020
The present paper outlines characteristics of thoron and its progeny in the indoor environment. Since the half-life of thoron (220Rn) is very short (55.6 s), its behavior is quite different from the isotope radon (222Rn, half-life 3.8 days) in the ...
Tokonami S.
europepmc   +2 more sources

A Study of Natural Radioactivity Levels and Radon/Thoron Release Potential of Bedrock and Soil in Southeastern Ireland. [PDF]

Int J Environ Res Public Health, 2021
Radon (222Rn) and thoron (220Rn) account for almost two-thirds of the annual average radiation dose received by the Irish population. A detailed study of natural radioactivity levels and radon and thoron exhalation rates was carried out in a ...
Mousavi Aghdam M, Crowley Q, Rocha C, Dentoni V, Da Pelo S, Long S, Savatier M.   +6 more
europepmc   +2 more sources

Radiological Assessment of Indoor Radon and Thoron Concentrations and Indoor Radon Map of Dwellings in Mashhad, Iran. [PDF]

Int J Environ Res Public Health, 2020
A comprehensive study was carried out to measure indoor radon/thoron concentrations in 78 dwellings and soil-gas radon in the city of Mashhad, Iran during two seasons, using two common radon monitoring devices (NRPB and RADUET).
Adelikhah M, Shahrokhi A, Imani M, Chalupnik S, Kovács T.   +4 more
europepmc   +2 more sources

Seasonal Variations in Radon and Thoron Exhalation Rates from Solid Concrete Interior Walls Observed Using In Situ Measurements

Atmosphere
Building materials, such as brick and concrete, are known indoor radon (222Rn) and thoron (220Rn) sources. Most radon and thoron exhalation studies are based on the laboratory testing of pieces and blocks of such materials.
Akihiro Sakoda, Yuu Ishimori, Md. Mahamudul Hasan, Qianhao Jin, Takeshi Iimoto   +4 more
doaj   +2 more sources

Long-Term Measurements of Radon and Thoron Exhalation Rates from the Ground Using the Vertical Distributions of Their Activity Concentrations. [PDF]

Int J Environ Res Public Health, 2021
A long-term measurement technique of radon exhalation rate was previously developed using a passive type radon and thoron discriminative monitor and a ventilated type accumulation chamber.
Modibo OB, Tamakuma Y, Suzuki T, Yamada R, Zhuo W, Kranrod C, Iwaoka K, Akata N, Hosoda M, Tokonami S.   +9 more
europepmc   +2 more sources

Impact of Wind Speed on Response of Diffusion-Type Radon-Thoron Detectors to Thoron [PDF]

International Journal of Environmental Research and Public Health, 2020
Air exchange through a porous medium depends partly on a pressure gradient induced in it, i.e., air-flow conditions of the outer air. Consequently, response of diffusion-type detectors to radon and thoron may vary with air-flow conditions surrounding the detectors.
Yasutaka Omori, Eka Djatnika Nugraha, Masahiro Hosoda   +2 more
exaly   +3 more sources

Radon and thoron exhalation rate, emanation factor and radioactivity risks of building materials of the Iberian Peninsula [PDF]

PeerJ, 2020
Radon (222Rn) and thoron (220Rn) are radioactive gases emanating from geological materials. Inhalation of these gases is closely related to an increase in the probability of lung cancer if the levels are high.
Samuel Frutos-Puerto, Eduardo Pinilla-Gil, Eva Andrade, Mário Reis, María José Madruga, Conrado Miró Rodríguez   +5 more
doaj   +2 more sources