Biomedical subjects

W Dott

Publications and source records attributed to W Dott.

80 records · Page 5Linked to original sources

PubMed1980

[Qualitative and quantitative examination of bacteria found in aquatic habitats. 2. Communication: application of miniturizid multitest systems for identification and biochemical typing of bacteria using a multi-point method (author's transl)].

A large number of bacteria were characterized and identified using a miniturized multi-test system and an automatic inoculator. This testsystem is suitable for ecological studies to get information about the qualitative and quantitative composition of bacterial populations. More than that a biochemical typing of bacteria is possible.

Bacteria↗

PubMed1980

[Qualitative and quantitative examination of bacteria found in aquatic habitats. 1. Communication: selective recording of bacteria during isolation on different solid media (author's transl)].

The quantity of bacteria taken from 8 watersamples and 46 slimesamples in the sphere of drinking water were examined using 15 different solid media. These media showed variations in total colony count and more or less selectivity against several bacterial groups. For the recording of as much bacteria as possible and as much different species as possible low nutrient containing media are necessary.

Agar↗

PubMed1979

[Microbial settlement of paint- and building-materials in the sphere of drinking water. 3. Macrocolonies on the joint in a drinking-water-reservoir covered with tile (author's transl)].

The microbial growth in form of macrocolonies on the joint of a drinking-water-reservoir covered with tile could be observed repeatedly. The slime was examined microbiologically. The origin of the carbon sources was determined by radiocarbon test.

Bacteria↗

PubMed1979

[Microbial settlement of paint- and building-materials in the sphere of drinking-water. 4. Communication: Examination of tightening compounds under working conditions (author's transl)].

Tightening compounds which were used in the sphere of drinking-water led to a microbial settlement that differs in points of quantity and quality depending on the kind of material. Twelve compounds on the base of Silicon, one on the base of Thiokol and one Epoxid were examined.

Animals↗

PubMed1978

[Coating and casing materials in drinking water containers. Practical observations and experimental findings].

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Bacteria↗

PubMed1978

[Microbial settlement of paint- and building-materials in the sphere of drinking-water. 2. Information: experimental examination of bitumen paint under working conditions (author's transl)].

A bituminous coating material for drinking water reservoirs was applied on testing plates for a microbial examination. In function of the chlorine content of the water a microbial slime layer could be found on the testing plates. The amount of slime became less in course of the time or was not produced at all, when the plates were desiccated before the experiment for some months. A slime layer could never be observed on plates of asbestos cement and polyacryl as inert materials for comparison. Different microbial populations were observed.

Coal Tar↗

PubMed1978

[Microbial growth on bitumen and chlorcaoutchouc under laboratory conditions (author's transl)].

Formerly published examinations of coating materials for drinking water reservoirs under working conditions were extended to those under laboratory standard. The tests of bitumen, chlorcaoutchouc, asbestos cement and polyacryl delivered results comparable to those achieved under working conditions.

Acrylates↗

PubMed1977

[Microbial growth on an expansion joint of a reservoir for drinkingwater (author's transl)].

In a clear water reservoir built in ready construction after a working-period of five months quite a lot of slime could be found on the expansion joint filled with tightening compound on the base of Thiokol. The covering slime could be removed easily with a rubber-screen. The microbiological analysis showed an extremely high number of colonies and additional the slime was secondarily settled with Protozoa. An influence on the water in the reservoir could not be found out under working conditions.

Chlorides↗