نتایج جستجو برای: pollution indexes

تعداد نتایج: 92531  

2016
Mohammad Ali Baghapour Amir Fadaei Nobandegani Nasser Talebbeydokhti Somayeh Bagherzadeh Ata Allah Nadiri Maryam Gharekhani Nima Chitsazan

BACKGROUND Extensive human activities and unplanned land uses have put groundwater resources of Shiraz plain at a high risk of nitrate pollution, causing several environmental and human health issues. To address these issues, water resources managers utilize groundwater vulnerability assessment and determination of protection. This study aimed to prepare the vulnerability maps of Shiraz aquifer...

2013
Zhanqiong He Songsak Sriboonchita Min He

To monitor and improve the urban air quality, the Chinese government has begun to make many efforts, and the interregional cooperation to cut and improve air quality has been required. In this paper, we focus on the seasonality of the first and second moments of the daily air pollution indexes (APIs) of 42 Chinese sample cities over 10 years, from June 5, 2000 to March 4, 2010, and investigate ...

2000
T. W. FitzHugh D. S. Mackay

The accuracy of agricultural nonpoint source pollution models depends in part on how well model input parameters describe the relevant characteristics of the watershed. The spatial extent of input parameter aggregation has previously been shown to have a substantial impact on model output. This study investigates this problem using the Soil and Water Assessment Tool (SWAT), a distributed-parame...

2015
Bozhi Ren Qian Wang Yangbo Chen Wenjie Ding Xie Zheng

In order to reveal the influence of the metals of soil-water interface in a manganese mine (Xiangtan, China), on local water environment, there are six kinds of metals (Mn, Ni, Cu, Zn, Cd, and Pb) characterized by measuring their concentration, correlation, source, and special distribution using principal component analysis, single factor, and Nemero comprehensive pollution index. The results s...

Journal: :Annals of environmental science and toxicology 2021

With the growth of industrialization and urbanization in megacities, some emerging disasters occur such as air pollution mortality, increasing cancer risks, decreasing life expectancy, descending prosperity, Human Development Indexes (HDI).

ژورنال: مهندسی دریا 2016

With the increase in the pollution caused by oil industry developments and related infrastructures in the last century, setting priorities for decisions in sensitive coastal areas to oil spills is important. This study uses the reports in the field of environmental sensitivity index in shorelines and applies the Delphi method to determine the criteria and sub-criteria allowed for adjusting the ...

2017
F. Valeriani C. Cianfanelli G. Gianfranceschi S. Santucci V. Romano Spica N. Mucci

Indoor Air Quality (IAQ) in libraries is influenced by the presence of specific factors which can impact on both paper storage as well as people health. Microclimatic conditions induce and support a biodiversity pattern involving environmental and anthropic microorganisms. We used a multidisciplinary monitoring model to characterize microflora biodiversity by Next Generation Sequencing (NGS). B...

2017
Lijie Zhang Wei Sun Changkai Wang

In the 21st century, China is being confronted with not only various urgent challenges (including industrialization, urbanization, modernization, and informatization), but also various pressures (including energy/resource shortages and environmental pollution). In this context, it is imperative for China to carry out new-type industrialization characterized by high technological content, high e...

ژورنال: بوم شناسی آبزیان 2023

In this study, the trophic status of the Bustan dam reservoir was investigated using Palmer and Carlson indices. Biological parameters including phytoplankton and environmental factors such as phosphate, nitrate and chlorophyll were sampled at the depth of 0.5 meter in five stations in three replicates seasonally in 2019, repetitions and Then the Palmer and Carlson indices were determined. The ...

Journal: :Journal of Geographical Systems 2010
José-María Montero-Lorenzo Coro Chasco Beatriz Larraz-Iribas

One of the main tasks of regional and environmental economics is to construct Environmental Quality Indexes for big cities. A standard method is to generate a single measure as a linear combination of several contaminants by applying Principal Component Analysis. Spatial interpolation is then carried out to determine pollution levels across the city. We innovate on this method and propose an al...

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