نتایج جستجو برای: water pollution

تعداد نتایج: 604643  

Journal: :The Yale Journal of Biology and Medicine 1971
Yale Nemerson

sons, except in a limited role of reference for a specific topic. It is an excellent book for the biologist, particularly the aquatic biologist, and is highly recommended for their general use. In addition it is a fine reference for those concerned with developing, establishing, and planning programs of water pollution control. It is unfortunate that the word "control" has been used in the titl...

Journal: :journal of advances in environmental health research 0
ali almasi department of environmental engineering, school of public health, social development and health promotion research center, kermanshah university of medical science, kermanshah iran rouhollah shokri department of environmental engineering, abadan school of medical sciences, abadan, iran rasool momenzadeh department of environmental health engineering, kerman university of medical sciences, kerman, iran shima rezaei environmental health research center, kurdistan university of medical sciences, sanandaj, iran ali jamshidi water treatment plant, water and wastewater company, ilam, iran razieh yazdizadeh department of environmental pollution, science and research branch, islamic azad university, ahvaz, iran

nitrate has been the most common chemical contaminant in water resource. this ion is introduced into the water via different ways, but more items of nitrate pollution was connected with farming-based drainage and sewage effluent. in this descriptive-analytical study, groundwater nitrate and nitrite concentrations of 8 wells on dehloran, ilam, iran, were analyzed in 2015 to determine the causes ...

Journal: :اقتصاد و توسعه کشاورزی 0
حامد بی آبی حسین محمدی لیلی ابوالحسنی

introduction: the role of economic factors in pollution and environmental degradation is one of the major issues in economic and environmental studies that many researchers have addressed in their studies. one of the issues in the field of environment to which less attention has been paid is the effect of economic factors such as the openness of the economy on water resource pollution. in this ...

2014
Shuh-Sen Young Hsi-Nan Yang Da-Ji Huang Su-Miao Liu Yueh-Han Huang Chung-Ting Chiang Jin-Wei Liu

After decades of strict pollution control and municipal sewage treatment, the water quality of the Tanshui River increased significantly after pollution mitigation as indicated by the River Pollution Index (RPI). The pollution level of the estuarine region decreased from severe pollution to mostly moderately impaired. The most polluted waters are presently restricted to a flow track length betw...

2007
Molly Lipscomb Ahmed Mushfiq Mobarak Mushfiq Mobarak

We examine the effect of political decentralization on pollution spillovers across jurisdictional boundaries. Upstream water use has spillover effects on downstream jurisdictions, and greater decentralization (i.e. a larger number of political jurisdictions managing the same river) may exacerbate these spillovers, as upstream communities have fewer incentives to restrain their members from poll...

2006
Michael Lamla Michael J. Lamla

This paper examines how robust economic, political, and demographic variables are related to water and air pollution. Employing Bayesian Averaging of Classical Estimates (BACE) for a cross section of up to 74 countries, 33 variables and 3 proxies for air and water pollution over a period from 1980 to 1995 we confirm the Environmental Kuznets Curve hypothesis, highlight the relevance of efficien...

2013
Anders Johny Olsen Trond Nordtug Dag Altin Morten Lervik Bjørn Henrik Hansen

Following a 120-h exposure period to 3 concentrations of oil dispersions (0.022 mg L(-1) , 1.8 mg L(-1) , and 16.5 mg L(-1) , plus controls) generated from a North Sea crude oil and a subsequent 21-d recovery, mortality, and several reproduction endpoints (egg production rates, egg hatching success, and fraction of females participating in reproduction) in Calanus finmarchicus were studied. Con...

2012
Ruibin Zhang Xin Qian Xingcheng Yuan Rui Ye Bisheng Xia Yulei Wang

In recent years, water quality degradation associated with rapid socio-economic development in the Taihu Lake Basin, China, has attracted increasing attention from both the public and the Chinese government. The primary sources of pollution in Taihu Lake are its inflow rivers and their tributaries. Effective water environmental management strategies need to be implemented in these rivers to imp...

2014
Ruibin Zhang Xin Qian Wenting Zhu Hailong Gao Wei Hu Jinhua Wang

In the beginning of the 21st century, the deterioration of water quality in Taihu Lake, China, has caused widespread concern. The primary source of pollution in Taihu Lake is river inflows. Effective pollution load reduction scenarios need to be implemented in these rivers in order to improve the water quality of Taihu Lake. It is important to select appropriate pollution load reduction scenari...

2013
Wei Liao

Volume 1 • Issue 2 • 1000e103 J Pollut Eff Cont ISSN: JPE, an open access journal The end-point treatment of point pollution sources is the best way to improve the quality of water and prevent coastal pollution, all over the world. Nevertheless, non-point pollution sources that influence the quality of surface water are serious concerns. Terrestrial pollution was deposited and accumulated over ...

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