نتایج جستجو برای: noise sources

تعداد نتایج: 473529  

Journal: :jundishapur journal of health sciences 0
behzad fouladi dehaghi department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel/fax: +98-6133735318 leila ibrahimi ghavam abadi department of environmental management, ahvaz branch, islamic azad university, ahvaz, ir iran hamid rasi department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran kambiz ahmadi angali department of occupational health, school of health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

results according to the study results, noise levels in a co2 plant’s house and control room ranged from 88 to 102 db and 79 to 82 db (a), respectively. in order to reduce the amount of emitted noise in the co2 plant house and control room, a noise control plan was implemented in each part of the facility; it was met with effective results. conclusions the findings of this investigation have cl...

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...

اخلاص, هانیه , منصوری, نبی الله , منظم, محمدرضا , نصیری, پروین ,

Introduction: Noise is one of hazardous agents of workplaces in industries. Electric industries and power plants are among industries in which noise pollution should be taken into account. This study aimed to develop and verify a statistical model for acoustic wave propagation in an indoor environment for noise related risk reduction management. . Material and Method: This theoretical-experime...

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...

ژورنال: سلامت و محیط زیست 2018

Background and Objective: Noise pollution causes many physiological, psychological, economic and social effects on human life. This issue is more important in the environment of industrial workplaces. This research aimed to adopt the functions of GIS for evaluating and spatial analysis of noises in industrial environments. Materials and Methods: At the initial step, the spatial data for indust...

2010
Alicja Konczakowska Bogdan M. Wilamowski

Noise (a spontaneous fluctuation in current or in voltage) is generated in all semiconductor devices. The intensity of these fluctuations depends on device type, its manufacturing process, and operating conditions. The resulted noise, as a superposition of different noise sources, is defined as an inherent noise. The equivalent noise models (containing all noise sources) are created for a parti...

ژورنال: سنجش و ایمنی پرتو 2020

Gamma-ray detection has an important role in the enhancement the nuclear safety and provides a proper environment for applications of nuclear radiation. To reduce the risk of exposure, aerial gamma survey is commonly used as an advantage of the distance between the detection system and the radiation sources. One of the most important issues in aerial gamma survey is the detection noise. Various...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید