نتایج جستجو برای: traffic noise index

تعداد نتایج: 677582  

Journal: :international journal of preventive medicine 0
sharat gupta shallu mittal avnish kumar k.d singh

the study was conducted on a group of 90 traffic policemen aged 20-50 years and working in and around patiala district to assess their knowledge, attitude, and practices toward the ill effects caused by traffic noise on health. the subjects were required to fill up a questionnaire regarding their self‑assessment of hearing ability, noise‑related attitudes, and the use of personal protective equ...

2016
Khair S. Jadaan

The growth in magnitude and various impacts of traffic noise has created an increasing attention on the prediction and control of noise levels. This study aims at developing a noise level prediction model under the local conditions of Amman, the capital of Jordan. Thirty four sites, representing different characteristics, were selected for use in model development. The resulting prediction mode...

Journal: :Nature 1934

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...

2009
PICHAI PAMANIKABUD

The objective of this study is to analyze and assess the impact of traffic noise from newly expanded Bangkok-Chonburi Motorway, which links Bangkok-the capital of Thailand to Pattaya-the famous beach resort in the eastern seaboard of the country, with the utilization of visualized noise mapping technique in plan view and cross-section of this motorway. The newly expansion of main roadways of th...

2012
Qais Banihani Khair Jadaan

The present study provides an evaluation of road traffic noise pollution in the city of Amman and its effects on residents. Statistical noise index L10(18 hr) was measured at nine different sites throughout the city of Amman. The British Calculation of Road Traffic Noise (CRTN) method was used to predict noise levels at the chosen sites. The CRTN method proved to be successful in predicting noi...

2017
Sharath Kumar

Purpose: The purpose of the study was to evaluate the effect of different gradations of noise reduction (NR) algorithm in hearing aids, through acoustical and perceptual measures. Methods: The output of the hearing aid with NR at three gradations (minimum, medium and maximum) and without NR, at 0 dB signal to noise ratio (SNR) across three types of noise (cafeteria, speech babble, and traffic n...

Journal: :international journal of environmental research 0
g. zambon university of milano bicocca, italy r. benocci university of milano bicocca, italy g. brambilla istituto di acustica e sensoristica "orso mario corbino", italy

monitoring of road traffic noise is becoming an important issue in modern cities due to the spreading of noise pollution and the extension of monitored areas. thus, the stratified spatial sampling is frequently applied to reduce the costs and provide adequate accuracy in order to obtain reliable noise maps. the definition of the strata in the sampling may refer to the legislative classification...

2002
P M Nelson Alan Bloomfield

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ژورنال: سلامت و محیط زیست 2018

Background and Objective: Air pollutants and noise level are areas of concern for public health, especially in metropolitan areas. In tunnels, underground stations and indoors with insufficient ventilation rate and noise reflection, accumulation of pollutants and noise pollution are serious problems. Materials and Methods: The present study was conducted to evaluate the level of PM and noise l...

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