the aim of this study was to investigate the relationships between air, noise, light and landscape pollution on job stress of staff work in high schools of different districts (1, 2, 10 and 11) of tehran. this stress can reduce the efficiency of the personnel. the number of people participated in this research was 250, selected by random from different schools of the districts. the questionnair...

the main objective of the research is to study noise pollution in khorram abad, presenting executive strategies to control or reduce it. therefore, 38 stations were selected at the region to measure the noise level round-the-clock, and the samples were also taken for a week in the middle of spring and summer, 2007. the measurements were carried out during the day (7:00 am to 10:00 pm) and night...

background : noise pollution and workers' noise exposure are common in industrial factories in iran. in order to reduce this noise pollution, evaluation and investigation of noise emission are both necessary. in this study, different noise mapping methodsare used for determining the distribution of noise.   materials and methods : in the present study, for preparing a noise map in a hall o...

objective: the present experimental study was designed to investigate the elucidative effect of 50 days of noise stress on fertilization capacity of rat and subsequent offspring quality. material and methods: two groups of 10 male rats were placed in two control and experimental groups for 50 days. in the experimental group, 90-120 db sound intensity and frequency of 300-350 hz of the device (...

  Background : Noise pollution and workers' noise exposure are common in industrial factories in Iran. In order to reduce this noise pollution, evaluation and investigation of noise emission are both necessary. In this study, different noise mapping methodsare used for determining the distribution of noise.   Materials and Methods : In the present study, for preparing a noise map i...

one of the most important issues in today&rsquos; urban world is increasing use of cars and its noise pollution, which is now one of the most important affecting pollutants on health and quality of lives of residents in urban areas. noise pollution effects on various aspects of human and the community health as well as the high cost of treatment, thus more studies in this field is needed. hence...