نتایج جستجو برای: earplugs
تعداد نتایج: 200 فیلتر نتایج به سال:
The study aimed to conduct an ergonomic intervention on a conventional line (CL) in a semiconductor factory in Malaysia, an industrially developing country (IDC), to improve workers' occupational health and safety (OHS). Low-cost and simple (LCS) ergonomics methods were used (suitable for IDCs), e.g., subjective assessment, direct observation, use of archival data and assessment of noise. It wa...
The study was conducted on a group of 90 traffic policemen aged 20-50 years and working in and around Patiala district to assess their knowledge, attitude, and practices toward the ill effects caused by traffic noise on health. The subjects were required to fill up a questionnaire regarding their self-assessment of hearing ability, noise-related attitudes, and the use of personal protective equ...
UNLABELLED The authors evaluated pure tone audiometry with and without specific ear protectors. AIM The purpose of this case control study was to measure the level of sound attenuation by earplugs. MATERIAL AND METHODS The evaluation included sixty ears of 30 subjects of both sexes, aged between 20 and 58 years, of various professional activities, with normal hearing thresholds, and followi...
Human ear canals cannot be measured directly with existing general measurement tools. Furthermore, general non-contact optical methods can only conduct simple peripheral measurements of the auricle and cannot obtain the internal ear canal shape-related measurement data. Therefore, this study uses the computed tomography (CT) technology to measure the geometric shape of the ear canal and the sha...
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