11 research outputs found

    Actual problems of antidotic therapy for the elimination of medical and sanitary consequences of emergency situations and possible ways of solution

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    The article examines the problems of developing, creating and under-providing treatment and prevention institutions with antidotes. The alleged causes of the insolvency of the antidote therapy system in the Russian Federation are being discussed, as well as possible solutions to this situation.В статье рассмотрены проблемы разработки, создания и обеспечения лечебно-профилактических учреждений антидотами. Обсуждаются предполагаемые причины возникновения несостоятельности системы антидотной терапии в Российской Федерации, а также предлагаются возможные пути решения данной ситуации

    Dispersionful analogues of Benney's equations and NN-wave systems

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    We recall Krichever's construction of additional flows to Benney's hierarchy, attached to poles at finite distance of the Lax operator. Then we construct a ``dispersionful'' analogue of this hierarchy, in which the role of poles at finite distance is played by Miura fields. We connect this hierarchy with NN-wave systems, and prove several facts about the latter (Lax representation, Chern-Simons-type Lagrangian, connection with Liouville equation, τ\tau-functions).Comment: 12 pages, latex, no figure

    Consequences and outcomes of fractures of the condylar (articular) process of the lower jaw in children

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    The aim of the study is to trace the pattern between the treatment of a fracture of the condylar process in children and their outcomes.Целью работы является прослеживание закономерности между лечениями перелома мыщелкового отростка у детей и их исходами

    A retrospective study of white line formation during restoration by dental composite materials

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    The article examines the problem of white line formation and its impact on restoration using dental composite materials. The factors leading to the emergence of a white line are experimentally investigated. The topicality of this issue has been analyzed.В статье рассмотрена проблема образования белой линии и ее влияние на реставрацию с использованием стоматологических композиционных материалов. Экспериментально исследованы факторы, приводящие к возникновению белой линии. Проанализирована актуальность данной проблематики

    Noise-induced escape from the Lorenz attractor

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    Noise-induced escape from a quasi-hyperbolic attractor in the Lorenz system is investigated via an analysis of the distributions of both the escape trajectories and the corresponding realizations of the random force. It is shown that a unique escape path exists, and that it consists of three parts with noise playing a different role in each. It is found that the mechanism of the escape from a quasi-hyperbolic attractor differs from that of escape from a non-hyperbolic attractor. The possibility of calculating the escape probability is discussed

    Dynamical control: Comparison of map and continuous flow approaches.

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    Continuous and pulsed forms of control of a multistable system are compared directly, both theoretically and numerically, taking as an example the switching of a periodically driven class-B laser between its stable and unstable pulsing regimes. It is shown that continuous control is the more energy efficient. This result is illuminated by making use of the close correspondence that exists between the problems of energy-optimal control and the stability of a steady state

    Intrinsic dynamics of heart regulatory systems on short timescales: from experiment to modelling.

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    We discuss open problems related to the stochastic modelling of cardiac function. The work is based on an experimental investigation of the dynamics of heart rate variability (HRV) in the absence of respiratory perturbations. We consider first the cardiac control system on short timescales via an analysis of HRV within the framework of a random walk approach. Our experiments show that HRV on timescales of less than a minute takes the form of free diffusion, close to Brownian motion, which can be described as a nonstationary process with stationary increments. Secondly, we consider the inverse problem of modelling the state of the control system so as to reproduce the experimentally observed HRV statistics of. We discuss some simple toy models and identify open problems for the modelling of heart dynamics

    Fluctuational Escape from a Quasi-Hyperbolic Attractor in the Lorenz System.

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    Noise-induced escape from the basin of attraction of a quasi-hyperbolic chaotic attractor in the Lorenz system is considered. The investigation is carried out in terms of the theory of large fluctuations by experimentally analyzing the escape prehistory. The optimal escape trajectory is shown to be unique and determined by the saddle-point manifolds of the Lorenz system. We established that the escape process consists of three stages and that noise plays a fundamentally different role at each of these stages. The dynamics of fluctuational escape from a quasi-hyperbolic attractor is shown to differ fundamentally from the dynamics of escape from a nonhyperbolic attractor considered previously [1]. We discuss the possibility of analytically describing large noise-induced deviations from a quasi-hyperbolic chaotic attractor and outline the range of outstanding problems in this field
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