نتایج جستجو برای: especially water
تعداد نتایج: 919158 فیلتر نتایج به سال:
6 Relationships between common water bacteria and pathogens in drinking-water H. Leclerc 6.1 INTRODUCTION To perform a risk analysis for pathogens in drinking-water, it is necessary, on the one hand, to promote epidemiological studies, such as prospective cohort and case–control studies. It is also appropriate, on the other hand, to better understand the ecology of these microorganisms, especia...
Transportation at weaning is a complex stressor made up of many factors, including withdrawal from feed and water, which can potentially negatively affect the health and welfare of pigs, especially those already experiencing weaning stress. The objective of this study was to evaluate the effect of weaning and extended transport durations (up to 32 h), with and without the provision of feed and/...
Our knowledge base regarding the presence and significance of chemicals foreign to the subsurface environment is large and growing—the papers in this volume serving as testament. However, complex questions with few answers surround the unknowns regarding the potential for environmental or human health effects from trace levels of xenobiotics in ground water, especially ground water augmented wi...
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