نتایج جستجو برای: pollution source

تعداد نتایج: 481458  

2017
Seung Ah Byun Thomas L. Daniels

The U.S. Environmental Protection Agency (EPA) has reported that over 45 percent of the nation's waterbodies are impaired and has identified nonpoint sources as the major contributors to water quality problems. Although federal and state government agencies have largely controlled pollution from point sources through infrastructure grants and permit programs, few statutes and regulations target...

Journal: :IOP Conference Series: Earth and Environmental Science 2021

Journal: :Journal of the Franklin Institute 1916

2008
G H Reischer J M Haider R Sommer H Stadler K M Keiblinger R Hornek W Zerobin R L Mach A H Farnleitner

The impairment of water quality by faecal pollution is a global public health concern. Microbial source tracking methods help to identify faecal sources but the few recent quantitative microbial source tracking applications disregarded catchment hydrology and pollution dynamics. This quantitative microbial source tracking study, conducted in a large karstic spring catchment potentially influenc...

2018
Junjie Ma Fansheng Meng Yuexi Zhou Yeyao Wang Ping Shi

Pollution accidents that occur in surface waters, especially in drinking water source areas, greatly threaten the urban water supply system. During water pollution source localization, there are complicated pollutant spreading conditions and pollutant concentrations vary in a wide range. This paper provides a scalable total solution, investigating a distributed localization method in wireless s...

Journal: :Journal of environmental quality 2014
P C Roebeling J Rocha J P Nunes T Fidélis H Alves S Fonseca

Coastal aquatic ecosystems are increasingly affected by diffuse source nutrient water pollution from agricultural activities in coastal catchments, even though these ecosystems are important from a social, environmental and economic perspective. To warrant sustainable economic development of coastal regions, we need to balance marginal costs from coastal catchment water pollution abatement and ...

2015
Hongjun Dai Tao Sun Kun Zhang Wen Guo

The process of urban-rural integration has led to severe ecological environmental pollution in rural areas of China, particularly in the economically-developed areas. This is an urgent issue to be solved. We select Jiangsu Province as a case study. From the perspective of the population, economic scale, energy consumption and financial support, we perform an empirical study of rural non-point s...

Asiyeh Moteallemi , Bijan Bina, Soheila Mortezaie,

Background: Noise pollution is one of the most important environmental pollutions that affects human health in different dimensions. The current study aimed to survey the effects of noise pollution on residents of the Samen district in Mashhad. Methods: To understand the psychological effects that noise pollution caused by vehicles has on people, 400 questionnaires designed to gather demograph...

1996
Daniel W. Bromley Daniel W Bromley

This paper presents an incentive scheme to control agricultural non-point-source pollution. The analysis is based on a nested agent framework with three parties; farmers, a country’s government, and the governments of all countries that affect each other’s environmental quality. Unlike previous analysis of incentive schemes to control agricultural pollution, we suggest non-individual contracts ...

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