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Biomedical subjects

W C Boyle

Publications and source records attributed to W C Boyle.

10 recordsLinked to original sources
PubMed1971

Rapid quantitative method for Salmonella detection in polluted waters.

A procedure has been developed for the enumeration of salmonellae in polluted waters using several modifications of existing techniques. Confirmation of salmonellae is achieved within 48 hr. This procedure includes selective enrichment in m-Tetrathionate Broth (22 +/- 1 hr), plating on Brilliant Green Sulfa Agar (20 +/- 1 hr), and confirmation by flagellar (H) agglutination of the growth in a mannosecontaining medium (6 +/- 1 hr). An incubation temperature of 41.5 C was used throughout this procedure. Dilution to extinction techniques (most probable number) were employed to enumerate salmonellae. Large sample volumes were concentrated through the use of membrane filters. This technique proved to be rapid and reliable for the enumeration of salmonellae in water, waste water, and waste-water sludges.

Agar↗
PubMed1968

Activated-sludge nitrification in the presence of linear and branched-chain alkyl benzene sulfonates.

The effects of biodegradable linear alkyl benzene sulfonate and branched-chain alkyl benzene sulfonate detergents on activated-sludge nitrification were investigated by administering a synthetic waste containing up to 23 mg of each detergent per liter to eight bench-scale, batch, activated-sludge units. It was found that both detergents tended to promote complete oxidation of ammonia to nitrate, whereas control units produced approximately equal amounts of nitrite and nitrate. Various hypotheses are offered to explain the phenomenon.

Ammonia↗
PubMed1967

Floc sizing techniques.

In the study of mass transfer of substrate through floc particles, it is essential to have an estimate of floc size. This study presents floc size measurements made on pure culture bacterial floc and shows their applicability to mass transfer studies. A critical review of the biological literature on methods to size biological floc and determine wet floc density is also presented.

Bacteriological Techniques↗