Results 61 to 70 of about 727 (180)

Survey of Radon and Thoron Levels in the Air of Urban and Rural Dwellings in Yazd Province: Perspective of Stone Type and Construction Materials

Indoor Air, Volume 2025, Issue 1, 2025.
The present study was aimed at assessing the concentrations of Rn and Th gases in the indoor air of residential homes in urban and rural areas near the active faults in Yazd province. Sampling and measurements were performed for 6 months (autumn and winter) in 2024 using the RAD7 device.
Samira Jafari Nodushan, Mohammad Hassan Ehrampoush, Fahimeh Teimouri, Reyhane Sefidkar, Hamid Mehrnahad, Rasha S. Ahmed   +5 more
wiley   +1 more source

Assessment of radon/thoron exhalation rate in the soil samples of Amritsar and Tarn Taran district of Punjab state

Radiation Protection and Environment, 2018
In the present study, the radon mass and thoron surface exhalation rates have been measured in the soil samples collected from the villages of the Amritsar and Tarn Taran districts of Punjab using the active portable device, i.e., SMART RnDuo monitor to ...
Manpreet Kaur, Ajay Kumar, Sandeep Kaur, Kawaljit Kaur   +3 more
doaj   +1 more source

Size normalizing planktonic Foraminifera abundance in the water column

Limnology and Oceanography: Methods, Volume 22, Issue 10, Page 701-719, October 2024.
Abstract Planktonic Foraminifera have been collected from the water column with different plankton sampling devices equipped with nets of various mesh sizes, which impedes direct comparison of observed quantifications. Here, we use data on the community size structure of planktonic Foraminifera to assess the impact of mesh size on the measured ...
Sonia Chaabane, Thibault de Garidel‐Thoron, Xavier Giraud, Julie Meilland, Geert‐Jan A. Brummer, Lukas Jonkers, P. Graham Mortyn, Mattia Greco, Nicolas Casajus, Michal Kucera, Olivier Sulpis, Azumi Kuroyanagi, Hélène Howa, Gregory Beaugrand, Ralf Schiebel   +14 more
wiley   +1 more source

Detecting Anomalies in Radon and Thoron Time Series Data Using Kernel and Wavelet Density Estimation Methods

Geosciences
Long-term monitoring of radon (222Rn) and thoron (220Rn) radioactive gases has been used in earthquake forecasting. Seismic activity before earthquakes raises the levels of these gases, causing abnormalities in the baseline values of radon and thoron ...
Muhammad Rafique, Awais Rasheed, Muhammad Osama, Adil Aslam Mir, Dimitrios Nikolopoulos, Kyriaki Kiskira, Aftab Alam, Georgios Prezerakos, Aqib Javed, Panayiotis Yannakopoulos, Christos Drosos, Georgios Priniotakis, Nikitas Gerolimos, Michail Papoutsidakis, Kimberlee Jane Kearfott, Saeed Ur Rahman   +15 more
doaj   +1 more source

Radon. Advanced regulatory approaches to public radiation protection

Радиационная гигиена, 2019
Currently in the Russian Federation the procedure for revision of the national regulatory documents (Radiation Safety Standards (NRB-99/2009) and Basic Sanitary Rules for Ensuring Radiation Safety (OS-PORB 99/2010) has been initiated. In this regard, the
S. M. Kiselev, A. M. Marennyy, V. V. Romanov   +2 more
doaj   +1 more source

THORON-SCOUT - first diffusion based active Radon and Thoron monitor

IOP Conference Series: Materials Science and Engineering, 2016
THORON-SCOUT is a stand-alone diffusion based active Radon and Thoron monitor for long term indoor measurements to evaluate the human health risk due to activity concentration in the breathing air. Alpha-particle spectroscopy of Po isotopes, being the progeny of the decay of the radioactive noble gas Radon, is applied to separately monitor activity ...
W Wagner, T Streil, V Oeser, G Horak, M Duzynski   +4 more
openaire   +1 more source

Measurement method studies on radon and radon-thoron progeny

Radiation Medicine and Protection
Radon and thoron exposure represents the largest component of public radiation dose from natural sources. While radon and thoron gases themselves contribute to this exposure, their short-lived decay products account for the majority of the effective dose.
Qiuju Guo, Lei Zhang
doaj   +1 more source

RADON AND THORON PROGENY IN DUTCH DWELLINGS

Radiation Protection Dosimetry, 2018
Radon and thoron progenies in Dutch dwellings cause ~400 cases of lung cancer per year. Some 30% of the risk is due to thoron progeny, which demonstrates that the influence of thoron progeny is much larger than previously anticipated. This was concluded from a national survey in 2500 Dutch dwellings, built since 1930.
Smetsers, R C G M, Blaauboer, R O, Dekkers, F, Slaper, H   +3 more
openaire   +4 more sources

Measurements of Thoron in the Atmosphere

Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1972
A study has been made on a method for calibrating the ionization current to be determined when measuring thoron concentration with an ionization chamber. The ionization current generated by the thoron exhausted from RdTh solution would appear to be controlled mainly by the bubbling velocity in the bottle, and the reciprocal of the current is a linear ...
SHIMO, Michikuni, IKEBE, Yukimasa, KAWANO, Minoru   +2 more
openaire   +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   +1 more source