نتایج جستجو برای: occupational dose
تعداد نتایج: 366133 فیلتر نتایج به سال:
Background and Objective : Noise is considered as a common occupational health hazard in a wide range of occupational settings including oil and gas industries and related companies. This research aimed to assess the environmental noise and personal exposure in a petrochemical plant. Method: First, environmental noise measurement was performed as recommended by ISO9612 (1997) and next, shor...
Background and Objective: Formaldehyde is a hazardous compound that used as a chemical preservative and disinfectant in medical laboratories and hospitals. The aim of this study was to risk assessment of occupational exposure to formaldehyde in different educational hospitals of Baqiyatallah University of Medical Sciences in Tehran. Materials and Methods: This descriptive cross-sectional st...
Introduction: Noise is one of the most harmful physical factors in the workplace that can cause annoyance. Therefore, the aim of this study was to investigate the effect of annoyance caused by occupational noise on employee’s mental distress. Materials and Methods: This analytical-descriptive study was performed on 325 employees of the parts manufacturing industry in seven groups and the noise ...
BACKGROUND Dutch construction workers are offered periodic health examinations. This care can be improved by tailoring this workers health surveillance (WHS) to the demands of the job and adjust the preventive actions to the specific health risks of a worker in a particular job. To improve the quality of the WHS for construction workers and stimulate relevant job-specific preventive actions by ...
Background and Objective: Professional radiation workers are occupationally exposed to long-term low levels of ionizing radiation. Occupational health hazards from radiation exposure, in a large occupational segment of the population, are of special concern. Biological dosimetry can be performed in addition to physical dosimetry with the aim of individual dose assessment and biological effects....
Radiation exposure of humans generally results in low doses delivered at low dose rate. Our limited knowledge of the biological effects of low dose radiation is mainly based on data from the atomic bomb Life Span Study (LSS) cohort. However, the total doses and dose rates in the LSS cohort are still higher than most environmental and occupational exposures in humans. Importantly, the dose rate ...
BACKGROUND Occupational exposure to manufactured nano-objects and their agglomerates, and aggregates (NOAA) has been described in several workplace air monitoring studies. However, data pooling for general conclusions and exposure estimates are hampered by limited exposure data across the occupational life cycle of NOAA and a lack in comparability between the methods of collecting and analysing...
1. Which of the following statement regarding radiation levels during endovascular aortic repair is correct?1A.New imaging technologies have no impact on intra-operative exposure EVAR procedures.B.According to current level evidence, image fusion alone may explain a decrease in DAP EVAR.C.The application ALARA principles allows reduction occupational exposure.D.There ample data available mobile...
-Silicosis, characterized by many cytokines expression, especially TNF-α and TGF-β1, is the most prevalent occupational disease world-wide. Here we examined whether quercetin can regulate expressios of TGF-β1 and TNF-α in lung of rats with silicosis. Totally 75 male Wistar rats, were randomly divided into three groups: group control, group model and group quercetin, (n=25). SiO2 powders were do...
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