نتایج جستجو برای: distance to water supplies

تعداد نتایج: 10836245  

Journal: :iran agricultural research 2012
s. amin m. r. farjoud a. shabani

lack of sewage collection systems, percolation of surface waters, and seepage of wells have raised the groundwater table in shiraz area in the south of iran. the growing population generates environmental pollution resulting in the degradation of the quality of surface and groundwaters used for agriculture. inorganic and organic pollutants have been traced in shiraz water resources. heavy metal...

Journal: :BMC Public Health 2005
Andria Q Jones Catherine E Dewey Kathryn Doré Shannon E Majowicz Scott A McEwen David Waltner-Toews Spencer J Henson Eric Mathews

BACKGROUND Over four million Canadians receive their drinking water from private water supplies, and numerous studies report that these supplies often exceed the minimal acceptable standards for contamination. Canadians in rural areas test their water intermittently, if at all, and treatment of water from private supplies is not common. Understanding the perceptions of drinking water among resi...

Journal: :Integrated environmental assessment and management 2009
Carol Stewart Lino Pizzolon Thomas Wilson Graham Leonard David Dewar David Johnston Shane Cronin

Carol Stewart,*3 Lino Pizzolon,4 Thomas Wilson,1 Graham Leonard,I David Dewar,1 David Johnston,# and Shane Cronin33 7Private Consultant, Brooklyn, Wellington, New Zealand 8National University of Patagonia, Esquel, Argentina 6University of Canterbury, Christchurch, New Zealand IGNS Science, Avalon, Lower Hutt, New Zealand #GNS Science/Massey University, Avalon, Lower Hutt, New Zealand 77Massey U...

Journal: :BMC Public Health 2006
Andria Q Jones Catherine E Dewey Kathryn Doré Shannon E Majowicz Scott A McEwen Waltner-Toews David Mathews Eric Deborah J Carr Spencer J Henson

BACKGROUND In Canada, the legal responsibility for the condition of private water supplies, including private wells and cisterns, rests with their owners. However, there are reports that Canadians test these water supplies intermittently and that treatment of such water is uncommon. An estimated 45% of all waterborne outbreaks in Canada involve non-municipal systems. An understanding of the per...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract this study was carried out to compare disinfecting effects of nanosilver with other feed disinfectants on layer hen performance, immune system, gastrointestinal microflora and intestinal morphology. total of 90 layers (lsl) were divided into five groups consisting: 1-control, 2- formalin (200 ppm), 3- formaycin (200 ppm), 4- nanosilver in drinking water (7.5 ppm) and 5-nanosilver in f...

Journal: :British medical bulletin 2000
D J Dawson D P Sartory

Significant advances in water treatment over the last century have resulted in massive improvements in the microbiological safety of public drinking water supplies in the UK and the developed countries. Incidences of illness due to poor treatment or post-treatment contamination are rare, but when they occur tend to attract considerable media attention. A well managed water treatment works and s...

Journal: :Environmental Health Perspectives 1983
J R Millette P J Clark J Stober M Rosenthal

The review of available data on the concentrations of asbestos in U.S. water supplies suggests that the majority of water consumers are not exposed to asbestos concentrations over 1 million fibers/Liter. A few populations, however, may be exposed to concentrations over 1 billion fibers/L. Of the 538 water supplies for which waterborne asbestos data are available, 8% have concentrations of fiber...

2014

In this paper we discuss the results of a survey on the perception of climate change in the 14 “tourist zones” (as defined by the Spanish Statistical Institute, INE) that stretch from the French border to Gibraltar alongside the Spanish Mediterranean coast, including the Balearic Islands. Our sample consisted of 1014 telephone interviews stratified according to the number of tourists staying in...

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