منابع مشابه
Some problems of nitroxyl chemistry*
The development of chemistry of free nitroxyl radicals puts a number of new problems before the researchers. It is possible to subdivide nitroxyl radicals into two independent groups: nitroxides and iminoxyls. due to pronounced difference in their reactivity. To specify the concept of stability of a substance it is necessary to reconsider the ideas concerning the discovery of the first stable f...
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Because of the nature of analytical chemistry, those teaching it tend to be much more pragmatic in their approach than their colleagues in other branches of chemistry are, in designing lecture courses. Thus the main emphasis is on the employment of theory for attaining severely practical ends, rather than on theory for its own sake and interest. Further, because analytical chemistry utilizes an...
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T' HE idea of this study originated from the establishment of a 1 diagnostic centre in Edinburgh in 1959. Aware that various aspects of general practice are increasingly the subject of discussion and argument but less frequently critically examined, we decided to study the records of 200 patients that one of us, a general practitioner, had examined at the Family Doctor Centre in Edinburgh. Thes...
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The construction of gravitational wave observatories is one of the greatest scientific efforts of our time. As a result, there is presently a strong need to numerically simulate the emission of gravitation radiation from massive astronomical events such as black hole collisions. This entails the numerical solution of the Einstein field equations. We briefly describe the field equations in their...
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ژورنال
عنوان ژورنال: Science
سال: 1912
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.35.905.697-b