نتایج جستجو برای: occupational dose
تعداد نتایج: 366133 فیلتر نتایج به سال:
BACKGROUND Environmental asbestos pollution can cause malignant mesothelioma, but few studies have involved dose-response analyses with detailed information on occupational, domestic, and environmental exposures. OBJECTIVES In the present study, we examined the spatial variation of mesothelioma risk in an area with high levels of asbestos pollution from an industrial plant, adjusting for occu...
OBJECTIVES To estimate the proportion of pleural mesothelioma cases that can be attributed to asbestos exposure in France including non-occupational exposure. METHODS A population-based case-control study including 437 incident cases and 874 controls was conducted from 1998 to 2002. Occupational and non-occupational asbestos exposure was assessed retrospectively by two expert hygienists. ORs ...
To facilitate the use of biomarkers in human health risk assessments, a biomarker decision support system is presented that systematically identifies, documents, validates, and incorporates biomarkers into occupational risk assessments. A biomarker database structure was developed and decision rules were identified to organize the diverse types of data to support an occupational risk assessment...
Carcinogenicity and chronic toxicity of 1,2-dichloroethane (DCE) were examined by inhalation exposure of groups of 50 F344 rats and 50 BDF1 mice of both sexes to DCE vapor or clean air as control for 6 h/d, 5 d/wk and 104 wk. The rats were exposed to 10, 40 or 160 ppm (v/v) DCE, while the mice were exposed to 10, 30 or 90 ppm. The 2-yr exposure to DCE produced a dose-dependent increase in incid...
In fluoroscopy guided interventional procedures, a ceiling suspended screen is used to protect personnel for scattered X-ray radiation arising from patient treatment. The correct positioning of the crucial proper occupational protection. proposed solution in this paper provides reliable and efficient protection radiation, based on an device protective merging into one system via appropriate int...
The study aim was to determine the risk of cataract among radiologic technologists with respect to occupational and nonoccupational exposures to ionizing radiation and to personal characteristics. A prospective cohort of 35,705 cataract-free US radiologic technologists aged 24-44 years was followed for nearly 20 years (1983-2004) by using two follow-up questionnaires. During the study period, 2...
Following the publication of the ICRP 1990 recommendations, the need to assess the dose received by aircrew and frequent flyers during air travel has arisen. The ICRP stated that exposure of aircrew to cosmic radiation should be considered as occupational exposure. Several countries have already implemented the ICRP recommendations. Due to the wide range of particles and energies at aircraft fl...
Introduction: Exposure to ionizing radiation as a result of diagnostic, treatment and occupational reasons, has created a remarkable range of cytogenetic damage in the DNA, as the first and main goal of ionizing radiation. The aim of this study is to assess the chromosomal damage in medical radiotherapy workers and its association with effective parameters such as age, sex, duration of employme...
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