Results 21 to 30 of about 727 (180)

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, Yuki Tamakuma, Eka Djatnika Nugraha, Takahito Suzuki, Miki Arian Saputra, Masahiro Hosoda, Shinji Tokonami   +6 more
openaire   +2 more sources

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

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   +1 more source

Pilot Survey of Outdoor Radon and Thoron Levels in Bulgaria Using an Innovative DVD-Based Method

Atmosphere
This study presents the results of a pilot survey utilizing an innovative DVD-based method to measure outdoor radon and thoron levels. Twenty-six discriminative radon/thoron detectors were deployed across four different territorial zones in Bulgaria ...
Dobromir Pressyanov, Dimitar Dimitrov
doaj   +1 more source

Estimation of natural radionuclide and exhalation rates of environmental radioactive pollutants from the soil of northern India

Nuclear Engineering and Technology, 2020
The estimation of radioactivity level is vital for population health risk assessment and geological point of view and can be evaluated as rate of exhalation and source concentration (226Ra, 232Th and 40K).
Vandana Devi, Rishi Pal Chauhan
doaj   +1 more source

Data on the effect of geological and meteorological parameters on indoor radon and thoron level- case study: Kermanshah, Iran

Data in Brief, 2018
The present study was aimed to evaluate the relationship between indoor radon and thoron concentrations, geological and meteorological parameters. The radon and thoron concentrations were determined in three hospitals in Kermanshah, the west part of Iran,
Meghdad Pirsaheb, Farid Najafi, Lida Hemati, Touba Khosravi, Hooshmand Sharafi   +4 more
doaj   +1 more source

IN-SITU MEASURING METHOD OF RADON AND THORON DIFFUSION COEFFICIENT IN SOIL [PDF]

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2014
A simple and valid in-situ measurement method of effective diffusion coefficient of radon and thoron in soil and other porous materials was designed. The analysis of numerical investigation of radon and thoron transport in upper layers of soil revealed ...
V.S. Yakovleva
doaj   +1 more source

Characterization of Commercially Available Active-Type Radon–Thoron Monitors at Different Sampling Flow Rates

Atmosphere, 2021
Recently, some commercially available active-type radon–thoron monitors were developed; however, their performance has not been characterized. This article presents the characteristics of three commercially available active-type radon–thoron monitors ...
Yuki Tamakuma, Chutima Kranrod, Yuto Jin, Hiromu Kobayashi, Eka Djatnika Nugraha, Aoi Sanpei, Mizuki Kiso, Hiroki Hashimoto, Ryoju Negami, Masahiro Hosoda, Shinji Tokonami   +10 more
doaj   +1 more source

Cellular mechanisms of radiation‐induced myocyte dysfunction: effects on calcium handling, ion channel regulation and mitochondrial energetics

The Journal of Physiology, EarlyView.
Abstract figure legend Dose‐dependent effects of radiation on cardiac electrophysiology and arrhythmia susceptibility. At low radiation doses (left), increased reactive oxygen species (ROS) initiate an ROS–Ca2+ positive feedback loop involving calcium/calmodulin‐dependent protein kinase II (CaMKII) activation, enhanced L‐type Ca2+ current (ICaL ...
Hannah M. Zukowski, Colleen E. Clancy
wiley   +1 more source

Distribution of Tropical Vegetation From the Pliocene to the Anthropocene

Journal of Biogeography, Volume 53, Issue 7, July 2026.
ABSTRACT Aim The tropics harbour most of Earth's terrestrial biodiversity. This biodiversity has been influenced by cycles of climatic stability and instability over millions of years and may be affected by abrupt changes in the near future. We reconstructed the geographic distribution of the major tropical vegetation types (deserts, semi‐arid ...
Ubirajara Oliveira, Britaldo Silveira Soares‐Filho   +1 more
wiley   +1 more source

Back to Basics: Increasing Tiredness and Hunger in Nordic Classrooms and Their Links to Disorderly Behaviour and Academic Achievement

European Journal of Education, Volume 61, Issue 2, June 2026.
ABSTRACT This study examines trends in self‐reported tiredness and hunger among 4th grade students in the Nordic countries between 2016 and 2023, using data from PIRLS and TIMSS. Results show a significant increase in the proportion of students who frequently arrive at school feeling tired or hungry, with tiredness reported by 38%–52% of students and ...
Anders Astrup Christensen, Shiri Lavy, Jacob Højgaard Christensen   +2 more
wiley   +1 more source