Results 301 to 310 of about 360,714 (344)
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Distribution of indicator bacteria in Canyon Lake, California
Water Research, 2005The spatial and temporal distributions of indicator bacteria in a small, multiple-use source drinking water reservoir in Southern California, USA were quantified over the period August 2001-July 2002. High levels of total and fecal coliform bacteria were present in Canyon Lake (annual geometric mean concentrations+/-SEM of 3.93+/-0.02 and 3.02+/-0.03 ...
Marylynn V. Yates +2 more
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Indicator bacteria in freshwater and marine molluscs
Hydrobiologia, 1984The freshwater mussel Anodonta cygnea and four marine shellfish (mussels, Mytilus edulis; cockles, Cerastoderma edule; clams, Mya arenaria; Scrobicularia plana) from a total of six sites were surveyed for Escherichia coli, Clostridium perfringens, faecal streptococci, 25 and 37 °C coliforms, 25 °C and 37 °C total viable numbers and fluorescent ...
Mohemid M. Al-Jebouri, D. R. Trollope
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Anaerobic bacteria as indicators of faecal pollution
Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences, 1980SynopsisIn several well-authenticated instances intestinal pathogens, includingSalmonellaspecies, have been isolated from water in the absence of bacteria, such asEscherichia coli,commonly used to detect faecal pollution. The present study examines certain anaerobic, non-sporing commensals of the intestinal tract as alternative ‘indicator’ bacteria ...
A.A. Opara +3 more
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Dormant bacteria in lake sediments as palaeoecological indicators [PDF]
Journal of Paleolimnology, 1992 Lake sediments contain viable allochthonous bacteria that can be cultured and used for palaeoecological studies. To be a good palaeoindicator, a bacterium must be able to survive in sediments for long periods of time, but also be unable to reproduce in the lake bottom.
Mats Nilsson, Ingemar Renberg
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Health-indicator bacteria in water-surface microlayers
Canadian Journal of Microbiology, 1978The distribution patterns of a variety of bacteria in the surface microlayer, 20 cm and 100 cm below the surface of rivers, open lake waters, and off docks are presented. Implications of this three-season study are that conventional sampling techniques underestimate the true microbiol densities.
B. J. Dutka, K. K. Kwan
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A method for the determination of cellulose destroying indices of bacteria [PDF]
Proceedings / Indian Academy of Sciences, 1949 A simple method has been described for determining the cellulose destroying indices of bacteria. The method may be employed in assessing the efficiency of rotproofing agents against bacterial deterioration.
A. N. Mukerjee +2 more
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Current Concepts of Indicator Bacteria
1977Pathogenic bacteria excreted in human feces are found in low counts in wastewater and are known to be more sensitive to environmental conditions than Escherichia coli. The latter, excreted both by humans and warm-blooded animals, are used as an indicator of fecal wastes which may contain the pathogen, but the validity of this practice is often ...
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Guidelines for indicator bacteria in waters: uncertainties in applications
Environmetrics, 1999Microbiological water quality guidelines have been established in most countries to protect the users from the risk of waterborne diseases. A guideline requires that a minimum number of water samples be collected during a period of time and analysed for an indicator organism.
J. Marsalek, Abdel H. El-Shaarawi
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[25] Luminous bacteria as an oxygen indicator
1978Publisher Summary This chapter discusses luminous bacteria as oxygen indicators. The high oxygen affinity of the luminous system of the bacteria does not reside in any special speed of reaction of the luciferase system with oxygen over and above that of cytochrome oxidase; it relies specifically upon the low turnover number of the system.
R. Oshino, B. Chance
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Application of a tetrazolium dye as an indicator of viability in anaerobic bacteria
Journal of Microbiological Methods, 1999The use of the redox dye 5-cyano-2,3,-ditolyl tetrazolium chloride (CTC) for evaluating the metabolic activity of aerobic bacteria has gained wide application in recent years. In this study, we examined the utility of CTC in capturing the metabolic activity of anaerobic bacteria.
Lisa Alvarez-Cohen +3 more
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