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Biomedical subjects

J W KLOCK

Publications and source records attributed to J W KLOCK.

7 recordsLinked to original sources
PubMed1957

Characteristics of sodium pentachlorophenate used against Australorbis glabratus in Puerto Rico.

This article describes laboratory evaluations, followed by field tests, of the effectiveness of sodium pentachlorophenate against Australorbis glabratus, the intermediate host of Schistosoma mansoni. Results within a range of different concentrations and at various periods of exposure were assessed in relation to both adults and ova. Since the effectiveness of molluscicide in natural snail-breeding areas is affected by the quantity of ponded water and the discharge rate, streams were classified to facilitate comparison of the findings from field tests. Different methods of application (in briquettes and by spraying) were tried under various conditions, and the influence of factors such as light, size of particles at stream-bottoms, and pH was investigated.

Animals↗
PubMed1956

An automatic molluscicide dispenser for use in flowing water.

The author describes the design and operation of an automatic molluscicide dispenser for use in flowing water. The equipment, which consists basically of a measuring weir coupled to a float-activated siphon, was designed for simplicity, low cost, construction with commonly available materials, and operation by untrained personnel. Observations in the field have shown that the dispenser increases the accuracy and consistency of dosage, reduces manpower requirements, and improves molluscicidal effectiveness.

Animals↗