نتایج جستجو برای: environmental water sample
تعداد نتایج: 1250198 فیلتر نتایج به سال:
The prevention and control of legionellosis in water supply systems involves environmental comprehensive sampling. Our aim was to investigate occurrence of Legionella spp. in water supply systems in different administrative districts of Riga, and to find out if there exists a correlation between Legionella spp. positive cases and water source, type of sample, sampling point and temperature of h...
Drought is among the most costly weather-related events and Iran is highly vulnerable to the economic, social and environmental impacts of drought In this study expected profit maximization model and utility efficient programming were applied to determine optimal crop pattern, expected gross margin and water use with and without, drought condition at representative farms of homogenous groups. T...
Nineteen bottled water products were purchased from stores in Potsdam and Wappingers Falls, New York and analyzed for 71 inorganic elements by inductively coupled plasma - mass spectrometry (ICP-MS). The wide range in elemental concentrations observed suggests considerable variation in source water composition, processing, and treatment. Comparison with samples from a typical small municipal wa...
The post-larval or puerulus stage of spiny, or rock, lobsters (Palinuridae) swim many kilometres from open oceans into coastal waters where they subsequently settle. The orientation cues used by the puerulus for this migration are unclear, but are presumed to be critical to finding a place to settle. Understanding this process may help explain the biological processes of dispersal and settlemen...
Editor’s note: NEHA strives to provide up-to-date and relevant information on environmental health and to build part nerships in the profession. In pursuit of these goals, we feature a column from the Environmental Health Services Branch (EHSB) of the Centers for Disease Con trol and Prevention (CDC) in every issue of the Journal. In this column, EHSB and guest au thors from across CDC will ...
New approaches should be considered as the US Environmental Protection Agency (EPA) moves rapidly to develop new beach monitoring guidelines by the end of 2012, as these guidelines serve as the basis by which states and territories with coasts along the oceans and Great Lakes can then develop and implement monitoring programs for recreational waters. We describe and illustrate one possible appr...
Over the past decade, evidence of abrupt latitudinal changes in the dynamics, structure and genetic variability of intertidal and subtidal benthic communities along central-northern Chile has been found consistently at 30-32°S. Changes in the advective and thermal environment in nearshore waters have been inferred from ecological patterns, since analyses of in situ physical data have thus far b...
1.0 Introduction The central theme of this conference is most appropriate, for today there is so much talk about adverse effects of the environment on health. Indeed one of the Millennium Development Goals (MDGs) is to ENSURE ENVIRONMENTAL SUSTAINABILITY and the target set for the year 2015 is to reduce by half the proportion of people without sustainable access to safe drinking water and basic...
INTRODUCTION Environmental factors-such as air and water pollution, lead exposure in homes, or aspects of urban design-influence the health of a community. Monitoring these environmental health influences is a core function of public health, making it necessary to identify critical priorities and effectively target outreach and intervention efforts. This paper reviews the methods used to develo...
Intensification of land use and urbanisation in New Zealand are compromising the quality of surface waters. Managing the environmental load of microbes from diffuse sources, such as agriculture, is particularly challenging. Microbial contamination of water is a complex area of environmental management, and our understanding of the subject is incomplete. Many different stakeholders are involved ...
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