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reentry model

См. также в других словарях:

  • anatomical reentry — reentry in which the block to conduction is an anatomical obstacle; it is usually described by the ring model …   Medical dictionary

  • functional reentry — reentry in which the block to conduction is due to functional heterogeneity of the electrophysiological properties of regions of cardiac tissue; it is usually described by the leading circle model …   Medical dictionary

  • Atmospheric reentry — refers to the movement of human made or natural objects as they enter the atmosphere of a planet from outer space, in the case of Earth from an altitude above the edge of space. This article primarily addresses the process of controlled reentry… …   Wikipedia

  • leading circle model — in cardiology, a multidimensional model of reentry that describes the cycle of alternating tissue activation and refractoriness in terms of a functional, rather than anatomical, intertissue interface acting as a barrier around which the… …   Medical dictionary

  • figure-of-eight model — in cardiology, a variation of the leading circle model of reentry in which the interface of refractory tissue is a curved barrier, with the result that the wavefronts split, proceed around each edge of the arc, and return centrally to describe a… …   Medical dictionary

  • ring model — in cardiology, a model describing the mechanism of anatomical reentry, based on a circuit that is formed around an impenetrable barrier to propagation and contains a locus of slow conduction. The locus blocks the initial normal impulse but is… …   Medical dictionary

  • reentrant mechanism — reentry mechanism the mechanism by which a locus of unidirectional block to conduction in cardiac muscle can result in ectopic beats or tachyarrhythmias. In addition to the block, also required are at least areas of slow conduction and… …   Medical dictionary

  • Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

  • Tier One — is Scaled Composites program of suborbital human spaceflight using the reusable spacecraft SpaceShipOne and its launcher White Knight. The craft are designed by Burt Rutan, and the project is funded 20 million US Dollars by Paul Allen. In 2004 it …   Wikipedia

  • Scaled Composites Tier One — Tier One redirects here. For other uses, see Tier 1 (disambiguation). Tier One is Scaled Composites program of suborbital human spaceflight using the reusable spacecraft SpaceShipOne and its launcher White Knight. The craft was designed by Burt …   Wikipedia

  • Mir — This article is about the Soviet/Russian space station. For other uses, see Mir (disambiguation). Mir …   Wikipedia

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