نتایج جستجو برای: industrial noise
تعداد نتایج: 339217 فیلتر نتایج به سال:
Background: Different studies have shown that Otoacoustic Emission (OAEs) is generated by Outer Hair Cells (OHCs) and these sensory cells are first structures exposed to damage of high level noise. Therefore minor impairment in OHCs can lead to lack of response of OAE. The purpose of the current study is to compare the pure tone thresholds, Transient Evoked Otoacoustic Emission (TEOAE...
Exposure to excessive noise level is capable of producing destruction of the hair cells due to vasoconstriction of the cochlea blood vessels and over stimulation of the hair cells as a response to the noise exposure, which in turn may reduce the nutrient and oxygen to the cells as well as, placing a great impingement on the occupational performances of the Industrial workers. The study examined...
The assessment of the impact of noise exposure on the population is a fundamental step in noise abatement. It includes the establishment of exposure-response relationships with the use of empirical studies and the setting of an exposure limit that specifies the protection level for the population and eventually triggers mitigating measures to reduce noise exposure. Exposure-response relationshi...
Introduction: Noise is one of the most harmful industrial agents and there are different methods to control it. Fuzzy analytical hierarchy process is an appropriate technique for selecting the best choice among several control methods. Therefore, the aim of this study was the selection of the most suitable sound control method using fuzzy hierarchical analysis (FAHP) technique in a refinery pla...
This study was conducted in metalwork and woodwork industries in Jeddah Industrial Estate. The purpose of this study was to assess the magnitude of industrial noise exposure and to propose remedial actions. Noise was measured at different times of a day in 28 randomly selected factories and workshops. Results indicated that noise levels varied according to the type and size of a factory, and th...
noise is considered as one of the harmful factors at industrial environments. it affects human health in different aspects including harmful influences on auditory, vision, neurological and psychiatric systems, hormones, physiological and mental systems. paying attention to the importance of hormonal effects on human body seems to possess crucial importance. the aim of the present study is to i...
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