نتایج جستجو برای: noise control

تعداد نتایج: 1505459  

Journal: :jundishapur journal of health sciences 0
behzad fouladi dehaghi department of occupational health, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of occupational health, school of public health, ahvaz university of medical sciences, ahvaz, ir iran. tel: +98-6113738282, fax: +98-6113367543 parvin nassiri department of occupational health, school of public health, tehran university of medical sciences, tehran, ir iran mohammad reza monazam department of occupational health, school of public health, tehran university of medical sciences, tehran, ir iran leila ebrahimi ghavam abadi department of environmental management, islamic azad university, science and research branch, ahvaz, ir iran e saeed farahani department of audiology, school of rehabilitation, tehran university of medical sciences, tehran, ir iran gholamreza hassanzadeh department of anatomy, school of medicine, tehran university of medical sciences, tehran, ir iran

background noise exposure is known as a risk factor for hearing loss and one of its effects is noise-induced stress. cortisol as a stress hormone is used in noise-induced stress assessments. objectives the aim of this study was to measure and compare saliva cortisol concentrations in the morning and evening in normal work day and rest day in both case and control groups and to assess the associ...

ناظم, فرزاد, پیری, خسرو, کریمی, امیرحسین,

Background: There is a long history of using physical activities and herbal medications to cure psychological diseases such as stress and anxiety. The aim of this study was to assess the effect of training, extract of Althaea kurdica flower and noise stress on the anxiety of Wistar male rats. Methods: Thirty-five male rats were randomly divided into five groups: the noise group (n=7), traini...

Journal: :acta medica iranica 0
azam moslehi department of physiology, school of medicine, tehran university of medical sciences, tehran, iran. fatemeh nabavizadeh-rafsanjani department of physiology, school of medicine, tehran university of medical sciences, tehran, iran. mansoor keshavarz department of physiology, school of medicine, tehran university of medical sciences, tehran, iran. nematollah rouhbakhsh department of audiology, tehran university of medical sciences, tehran, iran. masoud sotudeh department of pathology, shariati hospital, school of medicine, tehran university of medical sciences, tehran, iran. ehsan salimi department of pharmacy, pharmacy school, tehran university of medical sciences, tehran, iran.

noise is considered as one of the most severe sources of environmental and work place constraints. noise effects on immune function, hormonal levels, cardiovascular and respiratory systems are well known. the aim of the study is to evaluate the effects of traffic noise on basal and stimulated gastric acid secretion. 48 healthy rats were divided into five traffic noise exposures (1, 7, 14, 21, 2...

ژورنال: طب کار 2015

Aims: Noise is considered the most harmful physical agents in the workplace which exposure to it can cause the harmful physical and psychological effects on worker. Since the best noise control measures is to reduce or limit the at the source, the purpose of this study was to assess the noise pollution and determine the dominant sound source in an Air production plant of a Petrochemical industr...

Journal: :jundishapur journal of health sciences 0
farhad forouharmajd department of occupational health engineering, school of public health, isfahan university of medical sciences, isfahan, ir iran mitra shabab department of occupational health engineering, school of public health, isfahan university of medical sciences, isfahan, ir iran; department of occupational health engineering, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; occupational health engineering department, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-6133738269, fax: +98-33738282

conclusions according to the factory noise map, except for the control rooms with 81 dba noise, other cases of measuring stations were higher than the standard exposure of 85 dba noise. as a result, the implementation of control strategies, such as inspection and performance of control systems and insulation of the control room to prevent unnecessary exposure noise, are necessary. background st...

Journal: مجله طب نظامی 2022

Background and Aim: Exposure to impact noise (short-term, high intensity) higher than permitted levels results in injury to the auditory system. Armed forces are one of the occupational groups exposed to these types of noises resulting from gunshots. In this study, relevant articles and research on the adverse effects of impact noise, hearing loss, and tinnitus in armed forces and effective con...

ژورنال: طب کار 2014

Background: In continuing our work on effects of noise stress, this study aimed to determine the effect of noise stress on the anxiety and the volume of the amygdale nuclei as a key brain component plays role in the anxiety. Methods: In this experimental study, two-months old Wistar male rats were randomly divided into noise stress and control groups (n=10 in each group). Control rats were ma...

Journal: :journal of research in health sciences 0
rostam golmohammadi mohammad reza monazzam maryam nourollahi ali nezafat samaneh momen bellah fard

background: the adverse effects of noise are well known and noise problems due to industrialization of communities are increasing over the time. oil industries due to the process and nature of production; contain many noise sources such as compressors, turbines, and pumps, which cause excessive noise exposure. the objective of this study was to evaluate the noise characteristics of compressors ...

Journal: :acta medica iranica 0
azam moslehi department of physiology & pharmacology, school of medicine, qom university of medical sciences, qom, iran. fatemeh nabavizadeh department of physiology, school of medicine, tehran university of medical sciences, tehran, iran. mansoor keshavarz department of physiology, school of medicine, tehran university of medical sciences, tehran, iran. nematollah rouhbakhsh department of audiology, tehran university of medical sciences, tehran, iran. masoud sotudeh department of pathology, shariati hospital, tehran university of medical sciences, tehran, iran. ehsan salimi department of pharmacy, tehran university of medical sciences, tehran, iran.

noise is considered as one of the most severe sources of environmental and workplace constraints. many noise effects are well known on immune function, hormonal levels, cardiovascular and respiratory systems. in this study, our aim is to evaluate the effects of traffic noise exposure on basal and stimulated gastric pepsin secretion. 48 male rats were exposed to traffic noise (86 db) for a short...

حاجی زاده, روح اله, حقیقت, مجتبی, شبگرد, زهره, مرادی راد, روح الدین, موسوی, سیدمهدی, یزدانی راد, سعید,

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...

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