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agricultural watersheds; water pollution; Escherichia coli; Enterococcus; indicator species; feces; livestock; wild animals; population density; surface water; streams; Georgia
Abstract:
... The Upper Oconee watershed of Georgia is typical of the Piedmont and water quality is a key issue in the urbanization of this historically agricultural region. Fecal indicators may be found in higher numbers than regulatory targets and agricultural non-point sources are sometimes implicated. We enumerated E. coli and enterococci bacteria at 18 sites for 3 years (2200 observations) within the Upper ...
... 1 107 mammals, belonging to 77 species, were examined for intestinal Protozoa. With a few exceptions, the animals were housed in the sanatorium of the Zoological Gardens at Regent's Park and were in solitary confinement. Observations were based on films of fresh faeces, supplemented in certain cases by fixed and stained smears. 2 Cysts of amoebae were the commonest organisms noted. 1 Of the thirty ...
... SUMMARY: In a series of experiments in which a suspension of Bacterium coli strain 28.D.10, dried on a metal surface, was treated with alkyldimethylbenzylammonium chloride (BC) and cetyltrimethylammonium bromide (CTAB), the variability of the results compared favourably with that observed by other workers in the same field of disinfection, but using different methods. Quantitative estimates were o ...
... SUMMARY: Different suspensions of Bacterium coli in distilled water, prepared by a routine technique and adjusted nephelometrically with reference to a ground glass screen, showed no significant difference in their viable counts at the 5% level. In a study of the inhibition by phenol of cultures grown in peptone water from inocula of such suspensions the regression line obtained by plotting the pr ...
Escherichia coli; bacteria; bile; farms; water supply
Abstract:
... SUMMARY: A - comparison of the suitability of brilliant green bile broth and MacConkey's broth at 44° for the detection of Bacterium coli type I in farm water supplies, showed that 83.1% of the samples had no difference in the number of positive tubes at 44°, and only 5 samples (1.7%) had a significantly higher number of positive tubes in MacConkey's broth. Of 707 strains of coli-aerogenes bacteri ...
Escherichia coli; Staphylococcus aureus; agitation; air temperature; disinfectants; drying; glass; quaternary ammonium compounds; relative humidity; sodium hypochlorite; storage time
Abstract:
... SUMMARY: On exposing a strain of Bacterium coli 28.D.10 in a surface film at atmospheric temperature to atmospheres of different moisture contents, it was found that for relative humidities between 100 and 66% the numbers of survivors decreased with decreasing humidity. There was also some evidence of a slight increase in survivors for a decrease in relative humidity from 43 to 0%. The percentage ...
... SUMMARY: Suspensions of two strains of Bacterium coli type I were dried as thin films under atmospheric conditions and the numbers of organisms determined before and after drying. Three methods were used to grow the culture; in two the culture was grown in broth and in the other on agar slopes. Strain 28.D.10 was less sensitive than strain NCTC 5934. After culturing in broth NCTC 5934 showed irreg ...