نتایج جستجو برای: hearing protective devices
تعداد نتایج: 424940 فیلتر نتایج به سال:
BACKGROUND Noise-induced hearing loss (NIHL) is a major preventable occupational health problem with 250 million people worldwide known to have disabling impairment of moderate to greater severity. The aims of the study are to estimate the prevalence of NIHL in the police force; and study its association with age, sex, duration of service (years), smoking and alcohol habits, use of hearing prot...
This study uses the contingent valuation method to elicit individuals' preferences for their own and others' safety in road-traffic. Whereas one group is asked about a private safety device for themselves, other groups are asked about safety devices for their children, household, relatives and the public. Support is found for the hypothesis that individuals are not purely selfish when it comes ...
Introduction: To determine the effectiveness of hearing protective devices that lack the technical information are one of the major challenges of occupational health experts to judge the impact of this exposure on reducing the level of occupational exposure to noise. The aim of this study was to design a built a hearing test adapter and expriment it to determine the reduction rate of earmuffs a...
Current exposure limits for high intensity impulse noise contain factors for hearing protection which are based on very limited data. Recent studies in the U.S. and in France have provided new insights into the protection afforded by hearing protective devices. For impulses with an Aduration of approximately 3.0 ms, protection was found to be adequate for peak pressures up to 190 dB SPL for 6 i...
The purpose of this study was to determine the feasibility of using the auditory brain stem response (ABR) as a method of measuring the attenuation characteristics of nonlinear hearing protective devices. Sound field ABRs were recorded from seven normal hearing subjects with and without hearing protection. Three hearing protectors (two nonlinear and one linear) were evaluated. Test stimuli, con...
Introduction: The sound pressure levels caused by work environment noise, along with the effects and ways of reducing it, are one of the most important issues in the manufacturing industry. Noise is the most common pollutant in the industrial environment, which can cause many disorders in various organs of the body, such as the auditory and vascular systems. This study aimed to investigate the ...
BACKGROUND The present work aimed at to describe hearing threshold based on audiometry data of the mine workers based on their age, work station and years of working of an open cast chromite mine in Odisha, India at high fence. MATERIALS AND METHODS A cross-sectional study of hearing threshold of the subjects of the chromite mine was carried out. Audiometric data of 500 subjects were taken fr...
UNLABELLED Pop-rock musicians are at risk of developing hearing loss and other symptoms related to amplified music. AIM The aim of the present study was to assess the satisfaction provided by the use of hearing protection in pop-rock musicians. STUDY DESIGN Contemporary cohort study. MATERIALS AND METHODS A study of 23 male pop-rock musicians, aged between 25 to 45 years. After audiologic...
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