نتایج جستجو برای: noise control

تعداد نتایج: 1505459  

Journal: :The Journal of the Acoustical Society of America 1971

ژورنال: سلامت کار ایران 2018

Abstract: Background and aims: Using water pump in residential buildings to provide the required water pressure is accompanied by noise pollution and the annoyance of residents. So, the purpose of this study is to reduce water pump noise pollution with designed acoustic curtains in a residential building of Qazvin city.   Methods: The mean sound pressure level was measured before and ...

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
shahram vosoughi hassan asilian mahabadi ali khavanin mojdeh salehnia abdolhossein shahverdi vahid esmaeili

background: formaldehyde (h2c = o), is a member of aldehyde family with a simplest organic molecule, used in various industries. the aim of this experimental study was to investigate the effects of simultaneous formaldehyde and noise exposure on hormonal pituitary-gonadal axis in adult male mice. methods: 46 adult male mice were randomly assigned to one control group and three experimental grou...

Journal: :journal of paramedical sciences 0
ebrahim taban taban student of occupational health, faculty of medical sciences, tarbiat modares university, tehran, iran seyyed bagher mortazavi department of occupational engineering, faculty of medical sciences, tarbiat modares university, tehran, iran. shahram vosoughi department of health sciences, faculty of health, safety and environment, shahid beheshti university of medical sciences, tehran, iran. ali khavanin department of occupational engineering, faculty of medical sciences, tarbiat modares university, tehran, iran.

noise is considered as one of the harmful factors at industrial environments. it affects human health in different aspects including harmful influences on auditory, vision, neurological and psychiatric systems, hormones, physiological and mental systems. paying attention to the importance of hormonal effects on human body seems to possess crucial importance. the aim of the present study is to i...

Background and Aim:  So far, few studies have assessed the effect of noise on fertility capacity thus this study aimed to evaluate the possible protective effects of cinnamon extract on testicular tissue changes and fertility capacity in male rats exposed to noise stress. Materials and Methods: In this experimental study, 40 male rats were randomly divided into 5 experimental groups. Grou...

ژورنال: سلامت کار ایران 2017

Background and aims: Noise is one of the harmful parameters of the industrial environments. It affects the human health in different aspects including harmful effects on hearing damage, vision, neurological and psychiatric, hormones, physiological and mental systems. Paying attention to the importance of hormonal effects on human body, the aim of the present study is to investigate the effects ...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 1991

ژورنال: سلامت کار ایران 2018

background and aims: Hospital acoustics, noisy equipment and people have adversely impacts on patient’s physical and mental health. This paper aims to identify the major sources of noise and noise control techniques in hospitals of Behbahan Methods: Noise measurement was done according to ISO9612 at designated stations. Equivalent sound pressure levels were measured at 243...

Background: Liver is an important organ that responsible for biological detoxification. There are few studies about the effect of co-exposure to organic solvents and noise on hepatic system enzymes. The study aim was to assess the effects of short-term exposure to noise and styrene on rat liver enzymes. Materials and Methods: In this experimental study, we studied the liver enzymes of male r...

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