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Radon - Crossref

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Last Updated: 20 June 2022

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Abstract C075: Indoor radon exposure and thyroid cancer incidence among Guam residents

"Perhaps the best-known source of radiation that has been attributed to thyroid cancer is regular inhalation of radon gas. " Thyroid cancer is the fifth common cancer in women on Guam, and Filipinos had the highest thyroid cancer incidence rates among women in Guam and other ethnic groups in Guam. In Guam, the aim of this research is to determine if there is an association between thyroid cancer incidence, geographic location, ethnicity, and the amount of indoor radon exposure. The data sets used in this ecological analysis came from three main independent data collection organizations: Guam Environmental Protection Agency indoor 222Rn results, Guam Cancer Registry thyroid cancer incidence studies, and Guam Census 2000 and 2010 demographic data. In Guam villages, simple linear regression analysis was used to determine the relationship between mean indoor 222Rn levels and thyroid cancer incidence. In Guam, the geographical villages atop a limestone plateau in the northern region where nearly 66% of Guam residents and over 90% of Filipinos live, the radon was detected to be highest in Zone 1. The positive correlation between mean 222Rn values and thyroid cancer incidence showed that more exposed people have increased susceptibility to cancer, which could have explains a higher incidence among Filipinos. In:: Proceedings of the Eleventh AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2018 Nov. 2-5; New Orleans, LA; In:: The Eleventh AACR Conference on the Science of Cancer Health Disparities in Racial Minorities and the Medically Underserved; Proceedings; In:: The Eleventh AACR Conference on the Science of Breast Cancer Disparities in:.

Source link: https://doi.org/10.1158/1538-7755.disp18-c075


Generalized Solar Lentigines in a Patient with a History of Radon Exposure

"This patient had the lentigines most prominently on the thighs and lower legs, unlike SLs, which are usually on sun-damaged skin of the face, the dorsum of the arms, and forearms. " The patient had a history of occupational radon exposure in a spa with radon-containing water prior to increased recreational UV exposure. It's unclear if the patient's unusually slew of SLs in this patient was due to the occupational exposure to radon-containing water in addition to the recreational UV light exposure. ".

Source link: https://doi.org/10.1159/000316091


A study of sub-basalt depth imaging using the local Radon attributes on the Erlend Tertiary volcanic complex - North of Shetland, UK

"Abstract Acquiring conventional 3 km towed streamer data along a 2D profile in the North of Shetland's North allows us to use the local Radon-attributes within the context of depth processing techniques for accurate delineation of volcanic units and imaging beneath high velocity layers. " The Erlend Volcano report's success necessitates careful attention to the specifics of events. These artefacts represent cross-talk energy between various wave modes and include the undesirable portion of the wavefield. We demonstrate how to produce detailed subsurface photographs within the area of concern by using the closely related techniques of prestack event enhancement and separation, robust time processing for velocity model design, and finally event-based prestack depth imaging. "The results show improved structural detail and good continuity of key volcanic units and deeper investigations, indicating a faulted 0. 6 — 0. 9 km thick layer of Cretaceous sediments in the vicinity of Well 209/09-1. ".

Source link: https://doi.org/10.1017/s0016774600023180


Variations in radon concentrations in the underground waters during the generation and occurrence of seismic events in the Baikal region

"The aim of this research is to investigate and measure the response of the emanation field to the most significant seismic events in the Baikal region in 2021," the author says. The total number of earthquakes on the Baikal region's territory during the year provided a rundown of 40 of the country's most significant events, for which the radii of influence was calculated. Among the earthquakes demonstrating this effect, the Khubsugul earthquake was the largest in the study area over the last ten years. Distance from the source to the sampling point relative to the event's radius practically matches the event's influence by the recording time and the type of recorded responses. The complexities of an emanation field also influenced the amplitude of an imminent event, as well as the distance between the earthquake epicentre and the sampling point, which fluctuated over vast distances from the earthquake generation zone with gradual attenuation, and the response recording time and the degree of anomaly on the graph. The possibility of determining the emanation precursors to major earthquakes on the Baikal region's territory is based on two key factors: first, sufficient strength of an imminent earthquake; second, the location of the sampling point within the radius of this earthquake's radius.

Source link: https://doi.org/10.5800/gt-2022-13-2s-0631


Cytogenetic analyses in peripheral lymphocytes of persons living in houses with increased levels of indoor radon concentrations

"Published results on the effects of indoor radon exposure on the frequency of chromosome aberrations in resident peripheral lymphocytes are contradictory. " We therefore investigated the relationship between domestic radon exposure and the occurrence of chromosome aberrations in peripheral lymphocytes in 61 people living in houses with radon concentrations ranging from 80 up to 13,000 Bq/m 3. The number of cells containing dicentrics and/or centric rings in groups of people living in indoor radon concentrations of > 200 Bq/m 3 was significantly higher in comparison to the control group. However, there was no difference in the mean frequency of C dic + cr in the two groups living in dwellings with higher radon levels, according to the researchers.

Source link: https://doi.org/10.1159/000077495


Indoor/outdoor air exchange affects indoor radon – the use of a scale model room to develop a mitigation strategy

"We investigated the effect of air extraction versus air introduction at different flow rates on equilibrium 222Rn activity concentrations in a scale model room of 62 cm –u00d7 35 cm" made of a porous, radium, and thorium-rich lithoid ignimbrite from Vico volcano. In both cases, air introduction was always more cost-effective than air extraction to reduce indoor 222Rn, and higher flow rates resulted in larger 222Rn decreases. We found maximum radon decreases of 42 percent and 26. 0 percent were found in plasterboard and extracting air, respectively; without plasterboard, maximum reductions of 89. 5 percent and 25. 0 percent were achieved, respectively; without plasterboard, we found maximum radon decreases of 33. 2 percent and 26. 6 percent, namely with air introduction or extraction; with plasterboard, maximum reductions of 89. 5 percent and 25. 0 % were obtained; with plasterboard, maximum reductions of 89. 5 % and extracting air; The diffusion of 222Rn through the walls of the scale model room's scale model room was represented by a new interpretation of Fick's second statute, where a new term regarding air flow velocity was introduced. ".

Source link: https://doi.org/10.5194/adgeo-57-81-2022


Preliminary studies on soil radon activity at geothermal hotspot of Bakreswar-Tantloi

"Measurement of Radon-content throughout the region is an important field of study that seeks to properly assess the region's geothermal potential, study of local geology, and determination of Radon exposure in the region. " The measurements revealed that Radon levels in the region with Radon activity varying from 1 kBq/m 3 to 52 kBq/m 3 over the measured locations. "Wantance" measurement at seven locations increased than average deviation from normal deviation from average, while four locations recorded Radon activity more than double the average deviation from average. ".

Source link: https://doi.org/10.1088/2633-1357/ac78ac


Location Based Approach to Determining the Effective Dose from Radon Concentrations in Residential Environments

"In this investigation, indoor radon concentrations were determined, and the annual effective dose to the residents relative to both general and field occupancy was calculated. " The tests were carried out in Lagos, N. . . . ia, using CR-39 solid state nuclear track detectors. In the study area, an indoor occupancy hour of 9. 8, 1. 8, 2. 9, and 6. 6 was recorded for bedroom, bathroom/ toilet, kitchen, and living room respectively. U00b5Svy-1 to 166. 7 u2013 185. 3 u2013 185. 3 u00b5Svy-1 u2013 The dose received by a resident varied from 150. 2 u2013 222. 3 u00b5Svy-1 to 166. 7 u2013 185. 3 u00b5Svy-1 to 166. 7 u2013 185. 3 u2013 185. 3 u00b5Svy-1 to 166. 7 u2013 185. 3 u00b5Svy-1.

Source link: https://doi.org/10.4314/jasem.v26i3.24


Detailed Indoor Radon Survey in Dwellings of Provisional Radon-Prone Areas in Korea

"Abstract" is a word that describes indoor radon concentrations for 11 counties in Korea, develop a detailed radon distribution map, and compare the findings by some risk factors that influence indoor radon levels. Based on previous national surveys, the radon survey was conducted for 7 y in provisional radon-prone areas chosen for 7 years. The annual average indoor radon concentration for the survey areas was 94 Bq mu22123, with 6. 6% of all sampled dwellings showing values above 600 BQ mu22123. ".

Source link: https://doi.org/10.1093/rpd/ncac085


Seismic Data Anti-Aliasing Interpolation Using Sparse Radon Transform and Dynamic Mask Function

"Interpolation of regularly collected data with aliasing is vital for seismic data processing. " The new mask function in a 2D domain uses frequency and dip data to guide high frequency interpolation with severe wrap around. Numerical examples of synthetic and field data show that the proposed strategy is an effective and robust tool for aliased seismic data interpolation. ".

Source link: https://doi.org/10.1190/geo2021-0465.1

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions