noise pollution assessment in khoramabad to presenting executive strategies to control or reduce it
نویسندگان
چکیده
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 (10:00 pm to 7:00 am). the measured noise parameters in the sampling stations were lmin, lmax, leq, and spl, and then also calculated using the formulas tni, ln (l1, l10, l50, and l90), ldn. the noise average equal levels obtained at the sampling stations were compared with the standard ones in iran. at all stations, such values were more than the national standards. moreover, 500 questionnaires (250 in spring and 250 in summer) were analyzed to study the residents' level of awareness and discontentment when facing noise pollution. statistical analyses of the questionnaires showed a significant relationship between the men variable and nervousness, also between the women variable and the headache caused by traffic noises (in both seasons). the measured noise parameters in both spring and summer, also during days and nights in both seasons separately were statistically analyzed. the sampling stations at the three districts of the municipality were also analyzed regarding the parameters mentioned. among the main results obtained by the research was providing noise alignment maps for the parameters spl, leq, lmax, ldn (for days and nights separately) in both spring and summer, on which the critical regions concerning noise pollution were identified. then, due to the results obtained from the measurements and their comparing with standard values, and also regarding ways in other countries, suitable strategies were developed.
منابع مشابه
Strategies to prevent or reduce allergic disease.
The need for allergy prevention strategies has never been greater. Surging rates of food allergy and eczema are now adding to the already substantial burden of asthma and respiratory allergic diseases. The parallel rise in many other immune diseases suggests that the developing immune system is highly vulnerable to modern environmental changes. These strong environmental pressures may be one re...
متن کاملstudy of noise pollution in the blast furnace of a steel industry in order to noise control
background: in the steel industry, coke-fueled furnaces are used for smelting iron ore to produce cast iron are considered as sources of annoying noise.this study aims to evaluate the noise pollution blast furnace and sound source characteristics in order to present noise control measures in the steel industry. methods: measurement of noise level and its frequency analysis was performed using s...
متن کاملEvaluation of Noise Pollution in Small Workshops in Qom, Iran; and Its Situation Compared to National Noise Standards
Background & Aims of the Study: Noise is one of the most important environmental pollutants. It is a global health problem, especially among industrial workers. Since there was little information about noise levels in small workshops in Qom city, this study aimed to evaluate noise in small workshops and compare it with national standards. Materials and Methods: This was a cross-sectional stu...
متن کاملControl Strategies to Reduce Preharvest Rat Damage in Bangladesh
The principal objective of this study was to determine when during the year the control of bandicoot rats would be most cost-effective under the agricultural conditions existing in Bangladesh. An annual cycle in the rise and fall of burrow density was found. This argues for a management strategy directed at reducing rat damage at a specific time period within the year as opposed to a strategy o...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
محیط شناسیجلد ۳۵، شماره ۵۱، صفحات ۰-۰
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023