Results 101 to 110 of about 173 (125)

Thoron exhalation rate in stony materials: A simplified approach

Construction and Building Materials, 2018
Abstract A significant percentage of the thoron present in indoor environments is often attributable to building materials. It is therefore interesting to estimate the thoron exhalation rate from these materials. However, the detection of thoron is not a simple task: the very short half life of thoron and the lack of strong gamma emissions, prevents ...
Mauro Magnoni, Enrico Chiaberto, Anna Prandstatter, Elena Serena, Rosamaria Tripodi   +4 more
exaly   +2 more sources

Influence of humidity on radon and thoron exhalation rates from building materials

Applied Radiation and Isotopes, 2015
The contributions of radon and thoron from building materials to total radon (thoron) entry rates in dwellings range from almost zero to several percent. It is necessary to measure radon and thoron exhalation rates, among other things, to assess the radiological hazard to human health in a living environment.
Miroslaw Janik, Yasutaka Omori, H Yonehara   +2 more
exaly   +3 more sources

Exhalation rate study of radon/thoron in some building materials

Radiation Measurements, 2001
Abstract Indoor radon/thoron have been recognised as one of the health hazards for mankind. Common building materials used for construction of houses, which are considered as major sources of these gases in indoor environment, have been studied for exhalation rate of radon/thoron.
H S Virk
exaly   +2 more sources

Standardization and difficulties of the thoron exhalation rate measurements using an accumulation chamber

Radiation Measurements, 2008
Abstract Standardization of the thoron exhalation measurements is important for the intercomparison of the results among different laboratories. There are a few important distinctions between thoron (220Rn) and radon (222Rn) exhalation measurements using an accumulation chamber, due to a great difference between radon and thoron diffusion lengths in ...
Predrag Ujic, I Celikovic
exaly   +3 more sources

Investigation of radon and thoron exhalation rates in soils: Manali-Leh Highway region of Himalayas

Journal of Environmental Radioactivity
This study analyses the natural radionuclides concentration (226Ra and 232Th) along with the radon and thoron exhalation rates in 50 soil samples collected from the Manali-Leh Highway region of the Himalayas. The specific activity of 226Ra and 232Th radionuclides was determined using a NaI(Tl) detector, revealing that the concentration values of these ...
Ranjeet Dalal, Bhupesh Khyalia
exaly   +3 more sources

Radon and Thoron exhalation rates in soil near coal mines in Shahdol, Madhya Pradesh

Applied Radiation and Isotopes
The purpose of this study was to assess the amounts of radon and thoron gas emissions from soil in the vicinity of coal mines within the Shahdol region of Madhya Pradesh, which is in India. We collected and analyzed 50 distinct soil samples to carry out the study. The SMART RnDuo device (produced by AQTEK SYSTEMS) was used to measure the thoron surface
Amanjeet Panghal
exaly   +3 more sources

Effect of soil’s porosity and moisture content on radon and thoron exhalation rates

Journal of Radioanalytical and Nuclear Chemistry, 2022
A Pyngrope, Bijaya Sahoo, Saxena A
exaly   +2 more sources

Thoron exhalation rates in areas of Japan

Radiation Protection Dosimetry, 2010
Thoron exhalation rates were measured with a newly made portable instrument at 33 areas in 7 prefectures of Japan. Thoron exhalation rates ranged from 49 to 4890 mBq m(-2) s(-1). Radon exhalation rates were also measured in many of the areas at the same time and ranged from 2.1 to 11 mBq m(-2) s(-1).
M, Shimo, Y, Ishimori, M, Hosoda, S, Tokonami   +3 more
openaire   +2 more sources

Influence of soil environmental parameters on thoron exhalation rate

Radiation Protection Dosimetry, 2010
Field measurements of thoron exhalation rates have been carried out using a ZnS(Ag) scintillation detector with an accumulation chamber. The influence of soil surface temperature and moisture saturation on the thoron exhalation rate was observed. When the variation of moisture saturation was small, the soil surface temperature appeared to induce a ...
M, Hosoda, S, Tokonami, A, Sorimachi, T, Ishikawa, S K, Sahoo, M, Furukawa, Y, Shiroma, Y, Yasuoka, M, Janik, N, Kavasi, S, Uchida, M, Shimo   +11 more
openaire   +2 more sources

In situ measurements of thoron exhalation rate in Okinawa, Japan

Radiation Protection Dosimetry, 2010
Thoron exhalation rates from the ground surface were measured at 57 sites on Okinawa Island, Japan, using a ZnS(Ag) scintillation detector equipped with photomultiplier. The arithmetic means ± SD, median ± SD, minimum and maximum of the rates (unit: Bq m(-2) s(-1)) were estimated to be 1.9 ± 1.4, 1.6 ± 0.3, 0.04 and 6.2, respectively.
Y, Shiroma, N, Isa, M, Hosoda, A, Sorimachi, T, Ishikawa, S, Tokonami, M, Furukawa   +6 more
openaire   +2 more sources