منابع مشابه
Lxii. the Determination of Vitamin D
THE stability of preparations of vitamin D is of importance, both for the commercial products now on the market, and especially for the standard solutions which are widely used in estimations of the activity of other preparations. At present the International Standard adopted at the London Conference in 1931 consists of a solution of irradiated ergosterol in olive oil, and although this is like...
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1. In relatively low concentrations of NaCl, KCl, and CaCl(2) the rate of respiration of Bacillus subtilis remains fairly constant for a period of several hours, while in the higher concentrations, there is a gradual decrease in the rate. 2. NaCl and KCl increase the rate of respiration of Bacillus subtilis somewhat at concentrations of 0.15 M and 0.2 M respectively; in sufficiently high concen...
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ژورنال
عنوان ژورنال: The Philosophical Magazine
سال: 1809
ISSN: 1941-5796,1941-580X
DOI: 10.1080/14786440908562995