نتایج جستجو برای: noise exposure
تعداد نتایج: 496717 فیلتر نتایج به سال:
Background and aims: combined exposure to several threatening physical factors may impact on the performance negatively. With regard to the importance of the worker’s health and their optimum performance in addition to shortage of studies having dealt with the impacts of combined exposure on performance, this work was done with the purpose of studying the impacts of combined exposure to harmful...
Background : Noise pollution and workers' noise exposure are common in industrial factories in Iran. In order to reduce this noise pollution, evaluation and investigation of noise emission are both necessary. In this study, different noise mapping methodsare used for determining the distribution of noise. Materials and Methods : In the present study, for preparing a noise map i...
Background: Numerous evidences indicate that various environmental stresses during pregnancy affect physiological behavior of the offspring. This experimental study was designed to investigate the effect of noise stress during prenatal period of rats on spatial learning and memory and plasma corticostrone level in postnatal life.Methods: Three groups of pregnant rats were given daily noise ...
improvements in science and technology and the use of modern machinery in manufacture have led to increase in the number of workers exposed to hazardous agents including noise. this study evaluated the effects of occupational noise on hearing loss and blood pressure in welders after 4 years.in this cohort study, all of the welders working at one of neyshabur's water heater producing factories w...
background hearing capability plays a principal role on human's communication. noise-induced hearing loss (nihl) caused by exposure to high noise levels is a serious socio-economic problem in modern societies. nihl can either be reversible, resulting in a temporary threshold shifts (tts) or irreversible, resulting in a permanent threshold shifts (pts). pts is often confirmed in the time span of...
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