Results 11 to 20 of about 28,192 (297)

Radon Exhalation Patterns in A Dead-end Tunnel [PDF]

open access: yesMATEC Web of Conferences, 2016
The regularity of radon exhalation rate in the over-broken granite tunnel is susceptible to weather conditions and ventilation styles. Based on the calculation model of radon exhalation in tunnel, some experiments have been carried out to analyze the ...
Wang Shu Guang   +3 more
doaj   +4 more sources

Effect on Radon Exhalation Rate Due to Cracks in Concrete [PDF]

open access: yesNordic Concrete Research, 2019
The second largest cause of lung cancer in the World is related to radon (222Rn) and its progenies in our environment. Building materials, such as concrete, contribute to the production of radon gas through the natural decay of 238U from its constituents.
Döse Magnus, Silfwerbrand Johan
doaj   +2 more sources

Cytotoxicity of filtering respiratory protective devices from the waste sorting industry: A comparative study between interior layer and exhalation valve [PDF]

open access: yesEnvironment International, 2021
Filtering respiratory protection devices (FRPD) are mandatory for workers to wear in the Portuguese waste-sorting industry. Previous results regarding microbial contamination found on FRPD interior layer raised the question of whether microbial ...
Carla Viegas   +7 more
doaj   +3 more sources

222Rn Exhalation Rates from Some Granite and Marble Used in Korea: Preliminary Study [PDF]

open access: yesAtmosphere, 2021
The objective of this study was to establish a test method for assessing radon exhalation rates from building materials considering radon related environmental policy and research in Korea.
Hyewon Lee   +3 more
doaj   +2 more sources

Radon exhalation rate and radon activity in soils of riverine environs of South Karnataka [PDF]

open access: yesRadiation Protection and Environment, 2018
In the present study, sealed “can technique” using solid-state nuclear track detector (LR-115) films was employed to measure the radon exhalation rate and radium concentration in soil samples of Cauvery river environment.
C S Kaliprasad, Y Narayana
doaj   +2 more sources

Effects of Resistance Respiratory Training on Respiratory Muscle Strength in Healthy Active Individuals [PDF]

open access: yesMuscles
Background: Respiratory muscle strength (RMS) is a critical factor influencing athletic performance, particularly in high-intensity or prolonged activities.
Antonela Karmen Ivišić   +4 more
doaj   +2 more sources

Natural Radionuclides and Radon Exhalation Rate in the Soils of Cauvery River Basin [PDF]

open access: yesAir, 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   +2 more sources

Investigation of the influence of chamber construction parameters on radon exhalation rate [PDF]

open access: yesNukleonika, 2016
Radon exhalation from ground is a process dependent on the emanation and migration of radon through ambient air. Most studies on radon exhalation from soil were performed regarding the influence of meteorological and soil parameters.
Kozłowska Beata   +4 more
doaj   +2 more sources

Measurement of the radon and thoron exhalation rates from the water surface of Yixin lake [PDF]

open access: yesNuclear Engineering and Technology
The importance of determining the radon exhalation rate from water surface is emphasized by the increased use of radon and its daughter products as tracers in large-scale circulation studies of the atmosphere.
Jiulin Wu   +13 more
doaj   +2 more sources

Radon Exhalation Rate: A Metrological Approach for Radiation Protection [PDF]

open access: yesSensors
Radon, a radioactive inert gas that comes from the decay of naturally occurring radioactive species, poses a substantial health risk due to its involvement in lung cancer carcinogenesis.
Fabrizio Ambrosino   +7 more
doaj   +3 more sources

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