نتایج جستجو برای: equivalent sound pressure level

تعداد نتایج: 1647037  

ژورنال: سلامت کار ایران 2019

Background and aims: Undoubtedly, noise and vibration are major problems of industrial world and lot of people are very exposed to these phenomena in their workplace or residential areas. Researchers have shown that exposure to noise may increase the risks related to personal health, like nervous frailty, extreme irritability, muscle cramps, stress and anxiety, dizziness, headache and migraine,...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1985

Journal: :iranian journal of public health 0
ahmad soltanzadeh dept. of occupational hygiene, school of public health, hamadan university of medical sciences, hamadan, iran. hossein ebrahimi dept. of occupational hygiene, school of public health, hamadan university of medical sciences, hamadan, iran. majid fallahi dept. of occupational hygiene, school of public health, hamadan university of medical sciences, hamadan, iran. mojtaba kamalinia dept. of occupational hygiene, school of public health, hamadan university of medical sciences, hamadan, iran. shadi ghassemi dept. of biostatistics, school of public health, hamadan university of medical sciences, hamadan, iran. rostam golmohammadi dept. of occupational hygiene, school of public health and researches center for health sciences, hamadan university of medical sciences, hamadan, iran.

noise-induced hearing loss, which is one of the 10 leading occupational diseases, is a debilitating and irreversible disease. during the recent 15-years period (1997-2012), several studies have investigated the association between noise, hearing damage and other side effects of noise in iran. the aim of this study was to review systematically the relevant literature related to noise-induced hea...

Journal: :The Journal of the Acoustical Society of America 2014
Alexander G Soloway Peter H Dahl

Experimental measurements of the peak pressure and sound exposure level (SEL) from underwater explosions collected 7 km off the coast of Virginia Beach, Virginia are presented. The peak pressures are compared to results from previous studies and a semi-empirical equation that is a function of measurement range and charge weight, and are found to be in good agreement. An empirical equation for S...

ژورنال: ارگونومی 2018

Introduction: Sound as a detrimental factor in working environments can create annoying conditions for people in addition to physical problems. Therefore, in addition to evaluating quantitative parameters such as pressure levels, it is absolutely necessary to study the quality parameters of the sound in the work environment. Material & Methods: In this descriptive-analytic research, the sound ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1999
C Köppl G Yates

Rate-intensity functions, i.e., the relation between discharge rate and sound pressure level, were recorded from single auditory nerve fibers in the barn owl. Differences in sound pressure level between the owl's two ears are known to be an important cue in sound localization. One objective was therefore to quantify the discharge rates of auditory nerve fibers, as a basis for higher-order proce...

جهانگیری, محمد , علی آبادی, محسن , گلمحمدی, رستم ,

Introduction: The Power plants are as the major industries that have a large number of workers, providing they health is important. Exposure to occupational noise is the pervasive physical agent in industries like power plants and may impact health and for safety status for people. Determination of the sources of noise in workplaces is important step in noise control plans. This study aimed to ...

Journal: :Revista paulista de pediatria : orgao oficial da Sociedade de Pediatria de Sao Paulo 2013
Pricila Sleifer Maiara Santos Gonçalves Marinês Tomasi Erissandra Gomes

OBJECTIVE To verify the levels of sound pressure emitted by non-certified children's toys. METHODS Cross-sectional study of sound toys available at popular retail stores of the so-called informal sector. Electronic, mechanical, and musical toys were analyzed. The measurement of each product was carried out by an acoustic engineer in an acoustically isolated booth, by a decibel meter. To obtai...

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