نتایج جستجو برای: pollution index ipoll
تعداد نتایج: 461989 فیلتر نتایج به سال:
0022-1694/$ see front matter 2013 Elsevier B.V. A http://dx.doi.org/10.1016/j.jhydrol.2013.01.018 ⇑ Corresponding author. Address: 222 Riley-Robb H NY 14853, United States. Tel.: +1 6072552488; fax: + E-mail address: [email protected] (M. Todd Walt Spatially distributed nonpoint source (NPS) pollution indices are used to identify areas in a watershed where potential pollutant loading coincides w...
In this paper we present the recently proposed approach InterCriteria Analysis (ICA) for the Mesta River pollution modelling in Bulgaria. The approach is based on the apparatus of the index matrices and the intuitionistic fuzzy sets. We have applied the ICA to establish the basic pollution relations (the model structure) based on different criteria involved in the Mesta River. The results have ...
The problem of pollution in the Caspian sea has attracted increasing scientific concerns in recent years, but still, there is limited data relevant to the Gorgan bay. The current study aimed to evaluate the organic pollution of the Gorgan Bay, using Palmer Algal Index. Sampling was conducted seasonally in triplicate from summer 2017 to spring 2018. Phytoplankton samples were collected from surf...
Spatial distribution and degree of heavy metal pollution in urban roadside dusts from Sanandaj, Iran
Industrial activities and high traffic density are the most important heavy metal pollution sources in urban areas. Roadside dust created by atmospheric deposition can be one of the best indicators for heavy metal contamination levels. The present study reports the spatial distribution patterns and degree of heavy metal pollution (Cd, Cr, Ni, Pb, Zn, and As) in 50 roadside dust samples from urb...
زمینه و هدف: هدف از انجام این مطالعه بررسی آلودگی خاک های اطراف معدن منگنز ونارچ قم به فلزات سنگین منگنز ، نیکل ، سرب و مقایسه روش های مولر و کرباسی در تعیین شاخص آلودگی و تعیین سهم طبیعی و انسان ساخت عناصرمذکور درمنطقه مورد مطالعه است. روش بررسی: جهت انجام این مطالعه 3 نمونه به صورت سیستماتیک از عمق 5- 25 سانتی متری خاک برداشت و مخلوط شده و یک نمونه مرکب...
Objective: To determine the effect of Air Quality Index (AQI) in the first trimester of pregnancy on birth weight, placental weight, and the ratio of placental weight to the birth weight (pw-bw) in Isfahan. Materials and methods: This cross-sectional study was done on 312 consecutive pregnant women in Beheshti Hospital in Isfahan city in 2013. Information on air pollution was received from the ...
Background and Objective: Urban traffic, while affecting human health, causes physiological and biochemical changes in plants. The aim of this study was to investigate the bioaccumulation potential of Pb and Cd and assess air pollution tolerance index for a number of plants grown high traffic areas of Yazd. Materials and Methods: This cross-sectional, descriptive-analytical study was perfo...
introduction air pollution is one of the critical challenges in metropolitans around the world. according to world health organization (who), three millions people die from air pollution annually. in some studies mortality costs by air pollution was estimated. social cost of air pollution was estimated 28990 billions rials in tehran city. the mortality cost by air pollution was estimated about ...
The study investigates water quality pollution impacts on urbanization by analyzing temporal and spatial characteristics of different water quality parameters, and simulating economic loss of water quality pollution in Xi’an, China from 1996 to 2003. Results show that organic pollutants were the greatest contributors of surface water quality pollution from 1996 to 2003. High values existed in p...
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