نتایج جستجو برای: polluted water

تعداد نتایج: 557844  

2015
Chang-An Yan Wanchang Zhang Zhijie Zhang Yuanmin Liu Cai Deng Ning Nie

Water quality assessment at the watershed scale requires not only an investigation of water pollution and the recognition of main pollution factors, but also the identification of polluted risky regions resulted in polluted surrounding river sections. To realize this objective, we collected water samplings from 67 sampling sites in the Honghe River watershed of China with Grid GIS method to ana...

Journal: :FOOD IRRADIATION, JAPAN 1967

2017
Liang Xu Zhen-Feng Zhou

The effects of physiological integration on clonal plants growing in aquatic and terrestrial habitats have been extensively studied, but little is known about the role in the extension of amphibious clonal plants in the heterogeneous aquatic-terrestrial ecotones, especially when the water environments are polluted by heavy metals. Ramets of the amphibious clonal herb Alternanthera philoxeroides...

Journal: :Bulletin of environmental contamination and toxicology 1994
Y Miyabara J Suzuki S Suzuki

Urban rivers are polluted with discharge from sewage treatment plants and overflowing sewage caused by rainfall (Nix and Merry, 1990; Shiraris et al., 1987). These waste waters accelerate eutrophication of aquatic environments. Since urban river water is the public water supply source, it is an i~0ortant for public health issue to determine whether or not urban rivers are polluted with fecal ef...

2016
Andrei MELEKHIN Aleksandr MELEKHIN

Dedicated to the development of resource-saving polluted washing water treating technologies for transport companies. The article suggests methods of water purification with regard to scientifically grounded requirements to the quality of the water used and the required degree of purification and The article also considers the method of selecting efficient methods of sewage water treating, when...

1999
WILLIAM A. HOPKINS CHRISTOPHER L. ROWE JUSTIN D. CONGDON

Trace element concentrations in banded water snakes, Nerodia fasciata, and representative prey items from a site polluted by coal combustion wastes were compared with concentrations in conspecifics from a nearby reference site. Water snakes accumulated high concentrations of trace elements, especially arsenic (As) and selenium (Se), in the polluted habitat. In addition to being exposed to conta...

2015
Quan Wang Xianhua Wu Bin Zhao Jie Qin Tingchun Peng

Understanding spatial and temporal variations in river water quality and quantitatively evaluating the trend of changes are important in order to study and efficiently manage water resources. In this study, an analysis of Water Pollution Index (WPI), Daniel Trend Test, Cluster Analysis and Discriminant Analysis are applied as an integrated approach to quantitatively explore the spatial and temp...

ژورنال: علوم آب و خاک 2015
افیونی, مجید , حاج‌عباسی, محمدعلی , مصدقی , محمدرضا, کرمانپور, مهدیه,

Petroleum pollution is an important environmental issue in most of the countries especially those have an oil industry. This study was conducted to investigate the effect of petroleum pollution on soil water repellency and its relation to soil structural stability in Bakhtiardasht area, Isfahan. Polluted and adjacent non-polluted locations were selected to be representative in the green space a...

2017
Kamilla M. S. Hansen Aikaterini Spiliotopoulou Waqas Akram Cheema Henrik R. Andersen

Ozonation experiments were performed using unchlorinated tap water used for filling municipal swimming pools, actual pool water and pool water polluted by addition of fresh tap water and artificial body fluid to evaluate ozone kinetics and water quality effects on formation of volatile disinfection byproducts during subsequent chlorination. The ozone reaction was observed to behave according to...

2005
I. B. UMOH P. E. EBONG M. U. ETENG A. B. ANTAI A. O. AKPA

The haematological effects following ingestion of shellfish exposed to crude oil polluted water or the pollutant perse were investigated in albino Wistar rats. Feeding of four groups of rats for 28 days duration with two reference casein or shellfish protein control diets (Group A and B), and two test diets (Group C and D) supplemented at varying levels with shellfish which had been previously ...

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