نتایج جستجو برای: occupational radiation protection
تعداد نتایج: 466376 فیلتر نتایج به سال:
Introduction: The effects of the low dose of ionizing radiation are not thoroughly evident due to an unavoidable increase of occupational exposure and the widespread application of ionizing radiation in medical and industrial fields. The aim of this study was to investigate immune system responses following the low doses of ionizing radiation. Materia...
The spectrum and the polarization of the magnetic flux density (B-field) of 6 induction heaters and 1 arc oven were measured by means of a PMM (Italy) spectrum analyser. The spectrum analysis showed that no substantial harmonics were observed while the polarization analysis revealed that the operator's exposure was non-homogeneous within a distance of 1.5 m from the heater. When the distance wa...
The use of sophisticated wireless communications devices has been increasing exponentially over the past decades, with a corresponding public perception of increase in ambient background of radio frequency (RF) or high-frequency (HF) radiation in the environment. This perception has developed into a public concern, thus requiring an engagement of public health authorities to quantify these fiel...
This paper presents occupational skin exposure to solar ultraviolet radiation (UVR) of 122 Polish outdoor workers in spring and summer. In 65% of the cases, it was significant and exceeded 10 standard erythema doses (SED) during a work shift. The results provided grounds for (a) modifying hazard assessment based on the skin exposure factor proposed by the International Commission on Non-Ionizin...
BACKGROUND AND AIM: Protective equipment, such as lead aprons and thyroid shields, is effective in reducing patient radiation. This study was conducted for evaluation the use of thyroid shields and lead aprons in dental offices, in Kerman, Iran, in June 2014.METHODS: In this descriptive-analytical study, 106 dental offices with active X-ray machines were evaluated in Kerman. The information was...
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...
In the past decade, the medical effective dose per caput has increased in most European countries because of CT; it now ranges between 0.4 and 2 mSv/year. The biological impact of diagnostic imaging exposure is dominated by stochastic effects: based on the linear-no-threshold hypothesis, the risk of cancer induction is estimated to increase proportionally to organ dose, reaching around 0.5% at ...
The Zap-X is a self-contained and first-of-its-kind self-shielded therapeutic radiation device dedicated to brain as well as head and neck stereotactic radiosurgery (SRS). By utilizing an S-band linear accelerator (linac) with a 2.7 megavolt (MV) accelerating potential and incorporating radiation-shielded mechanical structures, the Zap-X does not typically require a radiation bunker, thereby sa...
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