منابع مشابه
What gets a cell excited? Kinky curves.
HODGKIN AND HUXLEY’S WORK (5) revealing the origins of cellular excitability is one of the great triumphs of physiology. In an extraordinarily deft series of papers, they were able to measure the essential electrical characteristics of neurons and synthesize them into a quantitative model that accounts for the excitability of neurons and other cells. The Hodgkin-Huxley equations, a set of four ...
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We present a toy model for five-dimensional heterotic M-theory where bulk three-branes, originating in 11 dimensions from M five-branes, are modelled as kink solutions of a bulk scalar field theory. It is shown that the vacua of this defect model correspond to a class of topologically distinct M-theory compactifications. Topology change can then be analysed by studying the time evolution of the...
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We study two-dimensional SQED viewed as the world-volume theory of a D-string in the presence of D5-branes with non-zero background fields that induce attractive forces between the branes. In various approximations, the low-energy dynamics is given by a hyperKähler, or hyperKähler with torsion, massive sigma-model. We demonstrate the existence of kink solutions corresponding to the string inter...
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ژورنال
عنوان ژورنال: Nature Nanotechnology
سال: 2006
ISSN: 1748-3387,1748-3395
DOI: 10.1038/nnano.2006.42