نتایج جستجو برای: radiation hazards
تعداد نتایج: 276161 فیلتر نتایج به سال:
Introduction The potential hazards posed by exposure to radiation from radon have been of great concern worldwide, since it is especially associated with increased risk of lung cancer. Some radioisotopes of radon progeny deposited in the human lungs emit β particles followed by the γ rays. While γ rays are comparatively less damaging to the respiratory system than α and β particles, it is the p...
The purpose of the survey was to evaluate physician's and authorities policies and clinical practices when using occupational X-ray during ablation procedures and device implantation. This survey shows infrequent use of lead gloves, radiation absorbing pads, and lead glass cabins, but increasing use of three-dimensional mapping systems to decrease X-ray radiation hazards. Digital fluoroscopy wi...
The Radiation Hazards Control (RHC) Section of the Radiation Safety Systems Division (RSSD) provides safety coverage on radiological aspects to various plants and facilities of BARC and other DAE units. The Division extends its expertise in dealing with safety matters pertaining to design, commissioning and operation of nuclear facilities. This report briefly summarizes the routine and the majo...
Health physics aspects associated with operation of the ITER are investigated. ITER has health physics elements in common with existing facilities as well as unique features. Fusion facility neutron radiation is similar to that encountered in a low energy accelerator. The tritium hazard has radiation protection issues in common with the Canadian Deuterium reactor. Completion of the final ITER d...
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....
Estimating the genetic hazards of radiation and other mutagens in humans depends on extrapolation from experimental systems. Recent data have shown that minisatellite loci provide a useful and sensitive experimental approach for monitoring radiation-induced mutation in humans. This review describes the progress made in validating this approach and presents the results of recent publications on ...
German sociologist Ulrich Beck declared two decades ago, in 1992, that we are living in a "risk society" [2]. Not only do we face risks from natural hazards that are beyond human control, such as earthquakes and tsunamis, we also make conscious decisions to create, negotiate, and accept risks from man-made hazards, including radiation from nuclear power plants, chest x-rays, flying in an airpla...
Since the 18th century scientists have been intrigued by the interaction of electromagnetic fields (EMFs) and various life processes. Attention has been focussed on EMFs in different frequency ranges, of which microwave frequency range forms an important part. Microwaves are part of the electromagnetic spectrum and are considered to be that radiation ranging in frequency from 300 million cycles...
An amendment concerning the enforcement of the law on the prevention of radiation hazards due to radioisotopes, etc., and the medical service law enforcement regulations were promulgated on June 1, 2005. This amendment concerned international basic safety standards and the sealing of radiation sources. Sealed radiation sources < or =3.7 MBq, which had been excluded from regulation, were newly i...
the effects of mobile phone exposure on humans, due to its potential health hazards, have become the focus of interest since many years ago. the effect of global system for mobile communications (gsm 900 mhz) on growth and proliferation rate of mesenchymal stem cells was assessed at the different distances and intensities of radiation. a subscriber identity module (sim) card was inserted to thi...
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