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51.
Under the assumption that a sequence of stochastic processes has paths in a Lusin function space we can prove the following. If convergence in the path space implies stochastic convergence, then tightness and convergence of the finite dimensional distributions of the stochastic processes are sufficient for weak convergence. The result in many cases implies a unification of the weak convergence proof. Demonstrably, such cases are C, D, Lip, Lp and , the space of distribution functions of finite measures. 相似文献
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Halperin BI Stern A Oreg Y Cremers JN Folk JA Marcus CM 《Physical review letters》2001,86(10):2106-2109
We analyze the effects of spin-orbit coupling on fluctuations of the conductance of a quantum dot fabricated in a GaAs heterostructure. Counterintuitively we argue that spin-orbit effects may become important in the presence of a large parallel magnetic field B( parallel), even if they are negligible for B( parallel) = 0. This should be manifest in the level repulsion of a closed dot, and in reduced conductance fluctuations in dots with a small number of open channels in each lead, for large B( parallel). Our picture is consistent with the experimental observations of Folk et al. 相似文献
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N. Lago J. L. Legido M. I. Paz Andrade I. Arias L. M. Casás 《Journal of Thermal Analysis and Calorimetry》2011,105(2):651-655
Microcalorimetry is an experimental technique which allows us to precisely measure the energy released as a consequence of
any transformation process. All organisms produce heat as a consequence of metabolism. The rate of heat production is an adequate
measurement of metabolic activity of organisms and their constituent parts, cells and sub-cellular levels. Microorganisms
produce small amounts of heat, in the order of 1–3 pW per cell. Despite the low quantity of heat produced by bacteria, their
exponential replication in culture medium allows their detection using microcalorimetry. This study is a microcalorimetric
study of the growth and metabolism of the bacterium Pseudomonas aeruginosa, using the heat liberated as a consequence of bacterial metabolism. With this aim, we used a Calvet microcalorimeter, inside
which two Teflon screw-capped stainless steel cells were located (sample and reference). Experiments were carried out at final
concentrations of 106, 105, 103 and 10 CFU/mL, and a constant temperature of 309.65 K was maintained within the microcalorimeter. Recording the difference
in calorific potential over time we obtained P. aeruginosa’s growth curves. The shape of these curves is characteristic and has a single phase. Thus, the heat flow curves were mathematically
studied to calculate the growth constant and generation time of this bacterium. 相似文献