نتایج جستجو برای: forty
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We review Galilean Electromagnetism since the 1973 seminal paper of Jean-Marc Lévy-Leblond and Michel Le Bellac and we explain for the first time all the historical experiments of Rowland, Vasilescu Karpen, Roentgen, Eichenwald, Wilson, Wilson and Wilson, which were previously interpreted in a Special Relativistic framework by showing the uselessness of the latter for setups involving slow moti...
A mere forty years ago it was unclear what motor molecules exist in cells that could be responsible for the variety of nonmuscle cell movements, including the "saltatory cytoplasmic particle movements" apparent by light microscopy. One wondered whether nonmuscle cells might have a myosin-like molecule, well known to investigators of muscle. Now we know that there are more than a hundred differe...
The purification of coated vesicles and the discovery of clathrin by Barbara Pearse in 1975 was a landmark in cell biology. Over the past 40 years, work from many labs has uncovered the molecular details of clathrin and its associated proteins, including how they assemble into a coated vesicle and how they select cargo. Unexpected connections have been found with signalling, development, neuron...
ZhaoHong Han Language Teaching / Volume null / Issue 02 / April 2013, pp 133 171 DOI: 10.1017/S0261444812000511, Published online: 22 February 2013 Link to this article: http://journals.cambridge.org/abstract_S0261444812000511 How to cite this article: ZhaoHong Han (2013). Forty years later: Updating the Fossilization Hypothesis. Language Teaching, null, pp 133171 doi:10.1017/S02614448120005...
1 In his 1949 paper, "The completeness of the first-order calculus", Henkin developed what is now called the method of (individual) terms to establish that every consistent set of statements of a first-order language L has a model of cardinality α, a the number of statements of L. The idea is to start with such a set S, construct a so-called term-extension L of L by adding a new terms to the vo...
August 14, 1980, marks the 45th anniversary of the signing of the Social Security Act. Across the country, we have held town meetings where people have discussed the past 45 years of social security and assessed the implications for the future. Now I would like to take the opportunity to convey my personal views of the past and future of social security, both as Commissioner and as an individua...
Forty patients with Waldenstr#{246}m’s macroglobulinemia were evaluated for criteria of diagnosis, clinical presentation and course. response to therapy, and appropriateness of the classification primary or secondary. A wide spectrum of presentations, course, and complications were present. Thus, the major criteria for diagnosis was a monoclonal 1gM serum protein abnormality present in concentr...
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