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Your search keyword '"J. K. Nielsen"' showing total 7 results
Start Over Author "J. K. Nielsen" Publication Year Range More than 50 years ago
7 results on '"J. K. Nielsen"'

4. [Acute intermittent porphyria in the aged]

Author

J K, Nielsen and O H, Hansen

Subjects
Adult, Male, Porphyrias, Porphyrins, Adolescent, Statistics as Topic, Age Factors, Humans, Female, Middle Aged, Child, Aged
Published
1967

5. Studies on the Stability of Streptomycin in Solution

Author

E J, Oswald and J K, Nielsen

Subjects
Solutions, Drug Stability, Streptomycin, Buffers, Hydrogen-Ion Concentration, Phosphates
Abstract

Streptomycin held in solution in concentrations of 100 and 1,000 microg./ml. at 10 degrees C. is stable at pH 6.0, 7.0, and 8.0 for a period of three months. The depressor effect observed in the turbidimetric assay appears to be the result of two factors, buffer salt concentration and pH, and is most marked at pH 6.0. Almost normal activity reappears at pH 8.0 even in the presence of the greater concentration of phosphates.

Published
1947

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