Results 241 to 250 of about 31,264 (259)
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Agar Medium for Enumeration of Fecal Coliforms
Journal of Food Science, 1992ABSTRACT Spread‐inoculated plates of fecal‐coliform agar (FCA) were pre‐incubated 2 hr at 35°C, and then transferred to 44.5°C for 22 hr. Fecal coliforms on FCA produce acids and CO 2 , which react with bromocresol purple and calcium lactate to form yellow to yellow‐green ...
HSING‐CHEN CHEN, SHEU‐DER WU
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Surface streaking and fecal coliform levels
Canadian Journal of Civil Engineering, 1984The measurement of the dilution and die-off of fecal coliforms in high velocity, wind-generated surface currents is discussed. The dispersion in the streaks is similar to that found in oil slicks. It was found that the high velocities and slower growth rate of the dispersion in the streaks resulted in fecal coliform levels about four times higher than
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Association of Fecal Coliforms With Soil Aggregates
Soil Science, 2009Manure-home microorganisms and organic particles can move in soils in large interconnected pores or in long macroporcs. These pathways in structured soils are located between soil aggregates or peds. Therefore, interaction with soil aggregates ma y substantially affect the ability of macropores to serve as bacterial conduits.
Andrey K. Guber +3 more
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Fecal coliform densities in a Western watershed
Water, Air, and Soil Pollution, 1982This paper describes the areal distribution of fecal coliform densities within the stream system of the South Platte River basin in Colorado. Low densities, e.g., 0 to 99 fecal coliforms per 100 ml, were found in mountain streams, while higher densities, e.g., 10000 to 100000 and above were found in plains streams. About 49 % of the plains stations and
PattiJ. Psaris, DavidW. Hendricks
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Regrowth of Fecal Coliforms in Class A Biosolids
Water Environment Research, 2006Eight types of Class A biosolids were tested for fecal coliform (FC) reactivation and/or regrowth at 20, 35, and 50°C for 21 days. Growth of FC did not occur at 20 or 50°C, but it was observed in two samples incubated at 35°C after a lag period of 48 hours. In undigested biosolids, final FC concentration exceeded 10 4 MPN/g, whereas in thermophilically
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Fecal coliform loadings from birds on bridges
Canadian Journal of Civil Engineering, 1983The fecal coliform loadings to the Rideau River from bird populations resident on bridges were measured for dry weather, summer, low river flows (8.5–17 m3 s−1). The Rideau River has typical velocities to 0.216 km h−1. The loadings were estimated by an intensive river sampling program over 4 weeks at river cross sections upstream and downstream of a ...
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Escherichia coli: The Fecal Coliform
1977The use of Escherichia coli as an indicator of fecal pollution and the significance of its presence in surface waters was reviewed. A minidefinition which identifies this organism at least 95 percent of the time was proposed. Membrane filtration and most probable number methods for the enumeration of E. coli were discussed.
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BIOSOLIDS PROCESS ENHANCEMENTS FOR FECAL COLIFORM REDUCTION
Proceedings of the Water Environment Federation, 2007Todd O. Williams, Rhonda L. Bowen
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