منابع مشابه
Crossroads of medicine and chemistry in the 20th century
IN THE 20TH CENTURY an interaction between chemists and physicians was highly successful. Many researchers were graduated both in chemistry and medicine like Janusz Supniewski (1899–1964). His education enabled him to explore a role of acetaldehyde in the carbohydrate and lipid metabolism in diabetic dogs (1926), to synthesize the imidazole derivative with anti-histaminic action (1928), to disc...
متن کاملInto the 20th Century
At the beginning of the 20th century descendants of the early European settlers who first colonized the coasts of Virginia, the Carolinas, and Georgia were established throughout the region. Most all of the native people had been displaced. Cotton was king. The mature forests were being . the southern world, wavered and then toppled. Demand for the South’s cotton declined due to new competition...
متن کاملForm in 20th Century Music
FORM. In the most general sense: shape (contour, the variation of some attribute of a thing in space or time), and structure (the disposition of parts, relations of part to part, and of part to whole). In music, shape is the result of changes in some attribute or parameter of sound, in time, while structure has to do with various relations between sounds and sound-configurations, at the same or...
متن کاملMathematics in the 20th Century
If you talk about the end of one century and the beginning of the next you have two choices, both of them difficult. One is to survey the mathematics over the past hundred years; the other is to predict the mathematics of the next hundred years. I have chosen the more difficult task. Everybody can predict and we will not be around to find out whether we were wrong. But giving an impression of t...
متن کاملSimulation of early 20th century global warming
The observed global warming of the past century occurred primarily in two distinct 20-year periods, from 1925 to 1944 and from 1978 to the present. Although the latter warming is often attributed to a human-induced increase of greenhouse gases, causes of the earlier warming are less clear because this period precedes the time of strongest increases in human-induced greenhouse gas (radiative) fo...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1959
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed036p363.2