احمدی, سعید
[ 1 ] - طراحی و ساخت نازل جت چند گانه با هدف کاهش صدای ناشی از تفنگ های بادپاش
Background and aims: Discharging compressed air through conventional single jet nozzles or open pipes is a common jet noise in industry. This study is aimed to reduce air blow gun jet noise by designing and fabrication of multiple jet nozzle as a substitute for conventional single jet nozzles. Methods: One of the most common commercial air blow gun equipped with a conventional single j...
[ 2 ] - مروری بر کنترلهای مدیریتی متداول در خصوص حفاظت در برابر مواجهه شغلی با پرتوهای رادیویی و مایکروویو از دیدگاه سازمانهای بین المللی
Background and aims: Radio frequency and microwaves radiations are a part of non-ionizing electromagnetic radiation that have various applications in different work environments. Administrative measures reduce the occupational exposure with low cost and acceptable performance. This study using narrative review was conducted to investigate the recommended administrative controls that published b...
[ 3 ] - کنترل آلودگی صوتی پمپ آب با استفاده از پرده‌‌های آکوستیک طراحی شده در یک ساختمان مسکونی شهر قزوین
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 ...
[ 4 ] - Hearing loss among Fasa sugar factory workers’, Fars Provincre, Iran (2016)
Background: Hearing loss induced by noise is one of the well-known and main health problems of occupational exposures. As a result, the current study sought to examine the association between age, working experience, and smoking status and hearing loss among sugar factory workers. Materials and Methods: This cross-sectional study was conducted in 2016 among 270 workers of a sugar factory in Fa...
[ 5 ] - بررسی آلودگی صوتی مولد های دیزلی در فعالیت های ساختمان سازی دریکی از مناطق تهران
Introduction: Using diesel generators is necessary for activities like welding in construction sites and it is often accompanied with noise pollution. The aim of this study was to evaluate noise pollution induced by diesel generators in construction activities in one of the districts of Tehran city. Material and Method: In this descriptive study, 14 construction sites were selected for th...
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