Radon Daughters
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PUMA – pooled uranium miners analysis: cohort profile Open
Objectives Epidemiological studies of underground miners have provided clear evidence that inhalation of radon decay products causes lung cancer. Moreover, these studies have served as a quantitative basis for estimation of radon-associate…
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Seasonal and Floor Variations of Indoor Radon Concentration Open
Radon is a naturally occurring, colourless and odourless radioactive gas, with a halflife of 3.8 days. Dangerous is not radon itself, but its progeny (daughter) products. The radon decay products irradiating of the lung. There is a strong …
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Intrinsic backgrounds from Rn and Kr in the XENON100 experiment Open
In this paper, we describe the XENON100 data analyses used to assess the target-intrinsic background sources radon (222Rn), thoron (220Rn) and krypton (85Kr). We detail the event selections of high-energy alpha particles and decay-specific…
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Detection of alpha radionuclides in air from patients during Ra-223 alpha radionuclide therapy Open
Ra-223 has recently been introduced to alpha radionuclide therapy. According to the decay scheme of Ra-223, an inert gas, Rn-219 is released from patients during alpha radionuclide therapy and its daughter radionuclides may accumulate arou…
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Radon exposure and lung cancer: risk in nonsmokers among cohort studies Open
Eleven cohorts of miners occupationally exposed to relatively high concentrations of radon showed a statistically significantly high risk of lung cancer, while three cohorts from the general population showed a relatively low concentration…
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Quantitative evaluation of radon, tobacco use and lung cancer association in an occupational cohort with 27 follow-up years Open
This study highlights the possible importance of radon exposure in childhood in cancer etiology and suggests another potential strategy to mitigate the global lung cancer burden.
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Estimating the burden of lung cancer in Canada attributed to occupational radon exposure using a novel exposure assessment method Open
Objective Exposure to radon causes lung cancer. The scope and impact of exposure among Canadian workers have not been assessed. Our study estimated occupational radon exposure in Canada and its associated lung cancer burden. Methods Expose…
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Measurement of ambient radon progeny decay rates and energy spectra in liquid argon using the MicroBooNE detector Open
We report measurements of radon progeny in liquid argon within the MicroBooNE time projection chamber (LArTPC). The presence of specific radon daughters in MicroBooNE’s 85 metric tons of active liquid argon bulk is probed with newly develo…
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Behavior of 222Rn, 220Rn and their progenies along a daily cycle for different meteorological situations: Implications on atmospheric aerosol residence times and Rn daughters' equilibrium factors Open
The correct assessment of the radiological hazard from radon and daughters, external and internal doses, residence times and equilibrium factors, implies the need to properly determine 222Rn (radon), 220Rn (thoron) and their respective sho…
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Epidemiologic Studies Cannot Reveal the True Shape of the Dose–Response Relationship for Radon-Induced Lung Cancer Open
A long-standing controversy is the correct shape of the dose-response relationship for lung cancer induction by inhaled radon (eg, residential radon) at low levels. A probabilistic approach is used in this commentary to show that cohort an…
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Effect of Radon and Lung Cancer Risk: A Narrative Literature Review Open
Exposure to cigarette smoke has been known to be a major risk factor for lung cancer. Although smoking has long been considered the main cause of lung cancer, about 5 to 25% of lung cancer cases occur in non-smokers. Radon is said to be th…
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Radon Progeny Adsorption on Facial Masks Open
The radioactive noble gas radon and its short-living progeny are inhaled during respiration, depositing their decay energies in the lungs. These progeny are considered responsible for more than 95% of the total effective dose and are, toge…
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Experimental Setups for In Vitro Studies on Radon Exposure in Mammalian Cells—A Critical Overview Open
Naturally occurring radon and its short lived progeny are the second leading cause of lung cancer after smoking, and the main risk factor for non-smokers. The radon progeny, mainly Polonium-218 (218Po) and Polonium-214 (214Po), are respons…
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Performance study of charcoal-based radon reduction systems for ultraclean rare event detectors Open
The continuous emanation of radon due to trace amounts of uranium and thorium in detector materials introduces radon to the active detection volume of low-background rare event search detectors. 222Rn produces a particularly problematic ba…
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Absorbed Dose Assessment from Short-Lived Radionuclides of Radon (222Rn) Decay Chain in Lung Tissue: A Monte Carlo Study Open
Introduction: Internal exposure to radon gas progeny can lead to serious biologic damages to the lung tissue. The aim of this study was to evaluate the absorbed dose by lung tissue due to the exposure from short-lived radioactive products …
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Radon Exposure and Cancer Risk: Assessing Genetic and Protein Markers in Affected Populations Open
Radon is an inert gas produced by the radioactive decay of uranium-238, commonly found in the environment. Radon and its decay products are the main sources of human exposure to radiation from natural sources. When inhaled, radon’s alpha p…
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Simulation and measurement of the suppression of radon induced background in the KATRIN experiment Open
Short-lived radon isotopes, such as 219Rn or 220Rn, are a serious source of background for the measurement of the neu-trino mass with the KATRIN experiment. Most of the radon emanates from the main vacuum pumps of the KATRIN Main Spec-trom…
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Measurement of radon-induced backgrounds in the NEXT double beta decay experiment Open
The measurement of the internal $^{222}$Rn activity in the NEXT-White detector during the so-called Run-II period with $^{136}$Xe-depleted xenon is discussed in detail, together with its implications for double beta decay searches in NEXT.…
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Circulatory system disease mortality and occupational exposure to radon progeny in the cohort of Newfoundland Fluorspar Miners between 1950 and 2016 Open
Objectives Exposure to ionizing radiation may increase the risk of circulatory diseases, including heart disease. A limited number of cohort studies of underground miners have investigated these associations. We previously reported a posit…
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Development of an electrostatic precipitator prototype to reduce exposure to radon progeny in poorly ventilated workplaces Open
Electrostatic precipitation is a well-known technology to reduce public exposure to radon daughters. A custom electrostatic precipitator (ESP) prototype has been designed and built to study the effectiveness of such a removal technique in …
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Radon and Neoplasms Open
Radon is a carcinogenic factor, but the effects of the potential carcinogenicity of radon progeny on the human body during the prenatal period have not yet been explored. Based on data regarding the half-lives of radon-222 and radon-220 an…
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Geant4 Simulation of Precipitated Activity-to-γ-Dose Rate Conversion Factors for Radon and Thoron Decay Products Open
The results of modeling the conversion factor from rainfall-deposited unit activity of gamma-emitting radon and thoron daughter decay products to their created gamma-radiation dose rate as a function of height above the Earth’s surface usi…
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Evaluation of Radon Concentrations in some Samples of Dwellings of Lung Cancer Patients and Healthy Using CR-39 in Iraq Open
Lung cancer is considered a disease that is completely happened by smoking; therefore, it is preventable perfectly. Yet, a small percentage of cases is there, possibly as many as 5 to 15%, in which there are other reasons. The risk factors…
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Radon Calibration System Open
In this chapter, an irradiation radon system was explained in detail. This system is based on soil gas as a natural radon source. The radon system was used to determine both the calibration factor of the radon detector and the equilibrium …
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Impact of radon exposures on non cancer outcomes and future perspectives Open
Radon is a naturally occurring radioactive gas formed from the decay of primordial radionuclides (Uranium and Thorium) in the Earth's crust. It infiltrates into homes from soil, water, and construction materials. Indoor radon is one of the…
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RADON-222 DETECTION USING BETA-DECAY PRODUCTS Open
The paper shows the possibility of determining of the radon by the radiometer on a base of multi-channel time analyzer of beta – decay products of radon. The radiometer consist of an electrostatic aerosol collector combined with the air in…
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Theoretical Model to Estimate the Distribution of Radon in Alveolar Membrane Neighborhood Open
Radon is a naturally occurring radioactive gas which tends to concentrate indoors, easily emanates from the ground into the air, where it disintegrates and emits radioactive particles. It can enter the human body through breathing or inges…
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Study and Search for Main Reason of Lung Cancers Based on Cherenkov Radiation in Environmental Radiation Open
The number of lung-cancer-related death is highest among all cancers in the world, and it is increasing in Japan where population aging in progressing. The main reason for the lung cancer of non-smokers is regarded to be environmental poll…
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Radon and its decay products Open
The aim of my thesis is to describe the physical properties of radioactive gas radon (222Rn), to get to know the methods for measuring radioactivity in housesand to preform some typical measurements. In the theoretical part the radon decay…
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Demonstration of Rapid Detection System for Radioactive Cesium in the Air toward Releasing the Evacuation Order in the Difficult-To-Return Zone in Fukushima Open
We have worked on the development of a rapid detection method for radioactive cesium in the air and confirmed its basic performance by Monte Carlo simulations and experiments conducted in the "difficult-to-return zone" in Fukushima. In the…