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uranium and cancer

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https://www.readbyqxmd.com/read/28290930/medical-effects-of-a-transuranic-dirty-bomb
#1
Asaf Durakovic
The modern military battlefields are characterized by the use of nonconventional weapons such as encountered in the conflicts of the Gulf War I and Gulf War II. Recent warfare in Iraq, Afghanistan, and the Balkans has introduced radioactive weapons to the modern war zone scenarios. This presents the military medicine with a new area of radioactive warfare with the potential large scale contamination of military and civilian targets with the variety of radioactive isotopes further enhanced by the clandestine use of radioactive materials in the terrorist radioactive warfare...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28286974/natural-radioactivity-levels-and-associated-health-hazards-from-the-terrestrial-ecosystem-in-rosetta-branch-of-the-river-nile-egypt
#2
W M Abdellah, H M Diab, S U El-Kameesy, E Salama, S El-Framawy
Twenty soil and 25 sediment samples were collected from the banks and bottom of the River Nile in the surroundings of biggest cities located close to it. Natural radioactivity concentrations of (226)Ra, (232)Th and (40)K have been evaluated for all samples by means of γ spectrometric analysis. The radioactivity levels of soil and sediment samples fall within the internationally recommended values. Nevertheless, high natural background radiation zones are detected in the Kafr El-Zayat region due to the presence of a fertilizer factory, and in the Rosetta region due to the presence of black sand deposits...
March 13, 2017: Isotopes in Environmental and Health Studies
https://www.readbyqxmd.com/read/28251247/the-social-costs-of-uranium-mining-in-the-us-colorado-plateau-cohort-1960-2005
#3
Benjamin A Jones
OBJECTIVES: Long-term social costs associated with underground uranium mining are largely unknown. This study estimated health costs of Native American and white (Hispanic and non-Hispanic origin) uranium miners in the US Public Health Service Colorado Plateau cohort study. METHODS: Elevated uranium miner person-years of life lost (PYLL) were calculated from the most recent study of the Colorado Plateau cohort over 1960-2005. Nine causes of death categories were included...
March 1, 2017: International Journal of Public Health
https://www.readbyqxmd.com/read/28218831/new-possibilities-for-magnetic-control-of-chemical-and-biochemical-reactions
#4
Anatoly Buchachenko, Ronald G Lawler
Chemistry is controlled by Coulomb energy; magnetic energy is lower by many orders of magnitude and may be confidently ignored in the energy balance of chemical reactions. The situation becomes less clear, however, when reaction rates are considered. In this case, magnetic perturbations of nearly degenerate energy surface crossings may produce observable, and sometimes even dramatic, effects on reactions rates, product yields, and spectroscopic transitions. A case in point that has been studied for nearly five decades is electron spin-selective chemistry via the intermediacy of radical pairs...
February 20, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28161042/factors-affecting-atmospheric-radon-concentration-human-health
#5
D E Tchorz-Trzeciakiewicz, M Kłos
We studied the influence of terrain, geology and weather condition on radon concentration in the atmosphere and occurrence of radon density currents. The survey was carried out in Kowary (SW Poland) and in the spoil tip formed during uranium mining. The measurements of radon concentration were performed using SSNTD LR-115. The measurements of uranium thorium and potassium content in soil were carried out using gamma ray spectrometer Exploranium RS-230. We noticed that terrain and stability of weather condition had significant impact on atmospheric radon concentration...
April 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28118116/accounting-for-berkson-and-classical-measurement-error-in-radon-exposure-using-a-bayesian-structural-approach-in-the-analysis-of-lung-cancer-mortality-in-the-french-cohort-of-uranium-miners
#6
Sabine Hoffmann, Estelle Rage, Dominique Laurier, Pierre Laroche, Chantal Guihenneuc, Sophie Ancelet
Many occupational cohort studies on underground miners have demonstrated that radon exposure is associated with an increased risk of lung cancer mortality. However, despite the deleterious consequences of exposure measurement error on statistical inference, these analyses traditionally do not account for exposure uncertainty. This might be due to the challenging nature of measurement error resulting from imperfect surrogate measures of radon exposure. Indeed, we are typically faced with exposure uncertainty in a time-varying exposure variable where both the type and the magnitude of error may depend on period of exposure...
January 24, 2017: Radiation Research
https://www.readbyqxmd.com/read/28090134/outcome-dependent-sampling-design-and-inference-for-cox-s-proportional-hazards-model
#7
Jichang Yu, Yanyan Liu, Jianwen Cai, Dale P Sandler, Haibo Zhou
We propose a cost-effective outcome-dependent sampling design for the failure time data and develop an efficient inference procedure for data collected with this design. To account for the biased sampling scheme, we derive estimators from a weighted partial likelihood estimating equation. The proposed estimators for regression parameters are shown to be consistent and asymptotically normally distributed. A criteria that can be used to optimally implement the ODS design in practice is proposed and studied. The small sample performance of the proposed method is evaluated by simulation studies...
November 2016: Journal of Statistical Planning and Inference
https://www.readbyqxmd.com/read/27753121/mortality-in-a-combined-cohort-of-uranium-enrichment-workers
#8
James H Yiin, Jeri L Anderson, Robert D Daniels, Stephen J Bertke, Donald A Fleming, David J Tollerud, Chih-Yu Tseng, Pi-Hsueh Chen, Kathleen M Waters
OBJECTIVE: To examine the patterns of cause-specific mortality and relationship between internal exposure to uranium and specific causes in a pooled cohort of 29,303 workers employed at three former uranium enrichment facilities in the United States with follow-up through 2011. METHODS: Cause-specific standardized mortality ratios (SMRs) for the full cohort were calculated with the U.S. population as referent. Internal comparison of the dose-response relation between selected outcomes and estimated organ doses was evaluated using regression models...
January 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/27651479/cancer-incidence-and-mortality-from-exposure-to-radon-progeny-among-ontario-uranium-miners
#9
Garthika Navaranjan, Colin Berriault, Minh Do, Paul J Villeneuve, Paul A Demers
OBJECTIVES: The study objectives were to extend the follow-up of the Ontario uranium miners cohort, one of the largest cohorts of uranium miners with low cumulative exposures, to examine the relationship between radon exposure and lung cancer mortality and, for the first time incidence, and address gaps in the literature, including dose-response relationship between radon exposure and other cancer sites, and non-cancer mortality. METHODS: The cohort of mine and mill workers was created using data from Canada's National Dose Registry and the Ontario Mining Master File...
December 2016: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/27594696/-assessment-of-radon-induced-health-risk-for-occupants-of-a-house-built-on-uranium-ore-residue
#10
E Cléro, L Marie, C Challeton-De Vathaire, D Laurier, A Rannou
BACKGROUND: At the request of French public authorities, the Institute of Radiological Protection and Nuclear Safety has assessed the radiological situation of a house built on uranium ore residues in Haute-Vienne and the health risks induced from exposure to radon for all occupants. Classified as a lung carcinogen by the World Health Organization, radon is a proven cause of lung cancer in case of regular inhalation over a long period, and the risk increases with cumulative exposure. METHODS: Radon exposure was reconstructed for various standard profiles of house occupancy...
September 2016: Revue D'épidémiologie et de Santé Publique
https://www.readbyqxmd.com/read/27512930/-lung-cancer-as-an-occupational-disease
#11
X Baur, H-J Woitowitz
Lung cancer is one of the most frequently encountered cancer types. According to the latest WHO data, about 10 % of this disease are due to occupational exposure to cancerogens. Asbestos is still the number one carcinogen. Further frequent causes include quarz and ionizing radiation (uranium mining). Probable causes of the disease can be identified only with the help of detailed occupational history taken by a medical specialist and qualified exposure assessment. Without clarifying the cause of the disease, there is neither a correct insurance procedure nor compensation for the victim, and furthermore, required preventive measures cannot be initiated...
August 2016: Pneumologie
https://www.readbyqxmd.com/read/27338424/modelling-of-radiological-health-risks-from-gold-mine-tailings-in-wonderfonteinspruit-catchment-area-south-africa
#12
Manny Mathuthu, Caspah Kamunda, Morgan Madhuku
Mining is one of the major causes of elevation of naturally-occurring radionuclide material (NORM) concentrations on the Earth's surface. The aim of this study was to evaluate the human risk associated with exposure to NORMs in soils from mine tailings around a gold mine. A broad-energy germanium detector was used to measure activity concentrations of these NORMs in 66 soil samples (56 from five mine tailings and 10 from the control area). The RESidual RADioactivity (RESRAD) OFFSITE modeling program (version 3...
2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27297055/the-use-of-mapped-geology-as-a-predictor-of-radon-potential-in-norway
#13
Robin J Watson, Mark A Smethurst, Guri V Ganerød, Ingvild Finne, Anne Liv Rudjord
Radon exposure is considered to cause several hundred fatalities from lung-cancer each year in Norway. A national map identifying areas which are likely to be exposed to elevated radon concentrations would be a useful tool for decision-making authorities, and would be particularly important in areas where only few indoor radon measurements exist. An earlier Norwegian study (Smethurst et al. 2008) produced radon hazard maps by examining the relationship between airborne gamma-ray spectrometry, bedrock and drift geology, and indoor radon...
January 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/27275162/renal-effects-and-carcinogenicity-of-occupational-exposure-to-uranium-a-meta-analysis
#14
REVIEW
Leonhard Stammler, Andreas Uhl, Benjamin Mayer, Frieder Keller
PURPOSE: Uranium is a heavy metal with alpha radioactivity. We state the hypothesis that uranium exposure is harmful to human kidneys and carcinogenic to body tissues. Therefore, we review epidemiological studies from people with known long-lasting uranium exposure. MATERIALS AND METHODS: Three meta-analyses are performed using clinical studies published in the PubMed database and applying RevMan 5.3 from the Cochrane Collaboration to calculate the outcome. The first two meta-analyses examine the standardized mortality ratio (SMR) and the standardized incidence ratio for any cancers of uranium workers who were operating in areas ranging from uranium processing to the assembly of final uranium products...
January 2016: Nephron Extra
https://www.readbyqxmd.com/read/27198876/modeling-lung-carcinogenesis-in-radon-exposed-miner-cohorts-accounting-for-missing-information-on-smoking
#15
Teun van Dillen, Fieke Dekkers, Harmen Bijwaard, Irene Brüske, H-Erich Wichmann, Michaela Kreuzer, Bernd Grosche
Epidemiological miner cohort data used to estimate lung cancer risks related to occupational radon exposure often lack cohort-wide information on exposure to tobacco smoke, a potential confounder and important effect modifier. We have developed a method to project data on smoking habits from a case-control study onto an entire cohort by means of a Monte Carlo resampling technique. As a proof of principle, this method is tested on a subcohort of 35,084 former uranium miners employed at the WISMUT company (Germany), with 461 lung cancer deaths in the follow-up period 1955-1998...
May 2016: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/27165601/assessment-of-environmental-and-occupational-exposure-to-heavy-metals-in-taranto-and-other-provinces-of-southern-italy-by-means-of-scalp-hair-analysis
#16
Elena Viola Buononato, Daniela De Luca, Innocenzo Cataldo Galeandro, Maria Luisa Congedo, Domenica Cavone, Graziana Intranuovo, Chiara Monica Guastadisegno, Vincenzo Corrado, Giovanni Maria Ferri
The monitoring of heavy metals in industrialized areas to study their association with different occupational and environmental factors is carried out in different ways. In this study, scalp hair analysis was used for the assessment of exposure to these metals in the industrial city of Taranto, characterized by a severe environmental pollution. The highest median values were observed for aluminum, barium, cadmium, lead, mercury, and uranium. Moreover, in the industrial area of Taranto, high levels of barium, cadmium, lead, mercury, nickel, and silver were observed in comparison with other Apulia areas...
June 2016: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27107776/assessment-of-radioactive-materials-and-heavy-metals-in-the-surface-soil-around-uranium-mining-area-of-tongliao-china
#17
Haribala, Bitao Hu, Chengguo Wang, Gerilemandahu, Xiao Xu, Shuai Zhang, Shanhu Bao, Yuhong Li
Natural and artificial radionuclides and heavy metals in the surface soil of the uranium mining area of Tongliao, China, were measured using gamma spectrometry, flame atomic absorption spectrophotometry, graphite furnace atomic absorption spectrophotometry and microwave dissolution atomic fluorescence spectrometry respectively. The estimated average activity concentrations of (238)U, (232)Th, (226)Ra, (40)K and (137)Cs are 27.53±16.01, 15.89±5.20, 12.64±4.27, 746.84±38.24 and 4.23±4.76Bq/kg respectively...
August 2016: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27105766/the-predictive-power-of-airborne-gamma-ray-survey-data-on-the-locations-of-domestic-radon-hazards-in-norway-a-strong-case-for-utilizing-airborne-data-in-large-scale-radon-potential-mapping
#18
M A Smethurst, R J Watson, V C Baranwal, A L Rudjord, I Finne
It is estimated that exposure to radon in Norwegian dwellings is responsible for as many as 300 deaths a year due to lung cancer. To address this, the authorities in Norway have developed a national action plan that has the aim of reducing exposure to radon in Norway (Norwegian Ministries, 2010). The plan includes further investigation of the relationship between radon hazard and geological conditions, and development of map-based tools for assessing the large spatial variation in radon hazard levels across Norway...
January 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/27048635/cancer-and-non-cancer-mortality-among-french-uranium-cycle-workers-the-tracy-cohort
#19
Eric Samson, Irwin Piot, Sergey Zhivin, David B Richardson, Pierre Laroche, Ana-Paula Serond, Dominique Laurier, Olivier Laurent
OBJECTIVES: The health effects of internal contamination by radionuclides, and notably by uranium, are poorly characterised. New cohorts of uranium workers are needed to better examine these effects. This paper analyses for the first time the mortality profile of the French cohort of uranium cycle workers. It considers mortality from cancer and non-cancer causes. METHODS: The cohort includes workers employed at least 6 months between 1958 and 2006 in French companies involved in the production of nuclear fuel...
April 5, 2016: BMJ Open
https://www.readbyqxmd.com/read/27012843/contaminated-sites-from-the-past-experience-of-the-us-environmental-protection-agency
#20
M A Boyd
The purpose of this paper is to provide an overview of the experience of the US Environmental Protection Agency (EPA) in cleaning up radioactively contaminated sites. In the USA, EPA regulates the radiological clean-up of uranium mill tailings sites, some Department of Energy legacy sites within the US nuclear weapons complex, and Superfund National Priorities List sites. The approach to site remediation decisions, including the determination of clean-up levels, varies according to the enabling legislation granting EPA these authorities...
June 2016: Annals of the ICRP
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