نتایج جستجو برای: noise sources

تعداد نتایج: 473529  

Journal: :Geophysical Journal International 2015

Background and Aim: Noise is the most common source of environmental stress that influences negatively the psychological and physiological aspects of human. The purpose of this study was determining the noise sources and assessing in General Intensive Care Unit. Materials and Methods: In this cross-sectional study, equivalent noise level "Leq 15 min", Maximum and Minimum sound pressure level we...

جوکار, مجتبی , فاخران, سیما , مددی, حسین , مرادی , حسین , مکی, تکتم ,

The most common sources of environmental noise are human transportation systems which can have catastrophic effects on physiology and behavior of wildlife species. Spatial models of noise propagation from roads in ecological sensitive region could be very useful tools for prediction of roads impacts. The goal of our study was to apply a straightforward, accurate, and affordable approach for mod...

Journal: :The Journal of the Acoustical Society of America 1993

Journal: :Journal of Synchrotron Radiation 2011

Journal: :The Journal of the Acoustical Society of America 1969

امیری, مولود , بهادران, پروین , عریضی, حمیدرضا ,

Abstract Background and purpose: Noise is the leading cause of complaints by both personnel and patients. The aim of the current study was to find the sources of disturbance due to noise and discriminate between object and people source of noise production. Materials and methods: Ex-post factor was the design of the research. Distress due to hospital noise was investigated in 161 postoperat...

Journal: :Geophysical Journal International 2010

Journal: :The Journal of the Acoustical Society of America 1975

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