نتایج جستجو برای: protective devices
تعداد نتایج: 313133 فیلتر نتایج به سال:
Longitudinal studies of hearing in workers in selected industries in Canada have shown that the effect of continuous high-level noise exposure is an increase in detection threshold of about 1 1/2 decibels per year. This is in contrast to 1/2 dB per year for non noise-exposed office workers in the same plants. Personal hearing protectors, in the form of ear plugs and muffs, have been chosen as a...
Portable Devices to Detect Directed Energy: User Perceptions of Personal Risk and Protective Devices
The malicious use of lasers to interfere with the activities of individuals in diverse environments is a growing concern. To increase awareness of public health workers, the Tricorder, a unique laser characterization sensor, is being fabricated. In this paper, the Tricorder’s human factors aspects and operational use are studied to enhance acceptance and increase use. Users’ perspectives were c...
= cc;-cLAing w o or ,%ore siirgc-pi-o;efiiiic? devices located rpsp~cti~-ely rr.f the service e!!trrr!!ce c>f a building and near the sensitive equipment is intended to ensure that each device shares the surge stress in an manner commensurate with its rating, to achieve reliable protection of equipment against surges impinging fi-om the utility supply as well as internally generated surges. How...
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Background and purpose: The last way of noise control is using hearing protective devices that maybe the first way of noise control in some industries. Obviously if the hearing protection device is not used continuously and properly, its actual performance is reduced. The aim of this research was to investigate the relationship between demographic variables and BASNEF training constructs in pro...
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