منابع مشابه
The stability of streptomycin.
The biological inactivation of streptomycin in acid and alkaline solution was first noted by Waksman and his coworkers (1). In a recent review, Waksman and Schatz (2) reported that solutions of crude streptomycin maintained their original potency during 15 to 17 days at 37’, but at 100’ about 50 per cent of the activity was lost in 10 minutes. However, the pH of the solutions was not indicated....
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
romantic education:reading william wordsworths the prelude in the light of the history of ideas
عصر روشنگری زمان شکل گیری ایده های مدرن تربیتی- آموزشی بود اما تاکید بیش از اندازه ی دوشاخه مهم فلسفی زمان یعنی عقل گرایی و حس گرایی بر دقت و وضوح، انسان عصر روشنگری را نسبت به دیگر تواناییهایش نابینا کرده و موجب به وجود آمدن افرادی تک بعدی شد که افتخارعقلانیتشان، تاکید شان بر تجربه فردی، به مبارزه طلبیدن منطق نیاکانشان وافسون زدایی شان از دنیا وتمام آنچه با حواس پنجگانه قابل درک نبوده و یا در ...
Counter-current distribution studies on streptomycin; the tautomerism of streptomycin.
The simplicity and reproducibility which characterize the conversion of streptomycin to malt01 (1) by heating in dilute alkali have made this reaction the basis of a frequently used analytical method for streptomycin (2). When used in these laboratories as a method of assaying streptomycin preparations, however, the malt01 reaction consistently gave lower yields per unit of potency with pure st...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1946
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(17)41176-8