ETIOLOGY, PATHOGENESIS AND MORPHOLOGY OF THE QUILTY EFFECT

Despite the fact that the study of endocardial infi ltrates (Quilty effect) in the transplanted heart has been going on for more than 30 years, the etiology, morphology and clinical signifi cance of this phenomenon are not yet fully understood. The article presents the facts of the available literature on the possible causes and mechanisms of the effect of Quilty, as well as on its impact on the function of the transplanted hear

Deontological Training of Special Teachers

В статье с позиций многоаспектного подхода рассматриваются структурные и функциональные связи в системе деонтологической подготовки специальных педагогов.The paper considers structural and functional relations in the system of deontological training of special teachers, the multidimensional approach being used

Suppressed absolute negative conductance and generation of high-frequency radiation in semiconductor superlattices

We show that space-charge instabilities (electric field domains) in semiconductor superlattices are the attribute of absolute negative conductance induced by small constant and large alternating electric fields. We propose the efficient method for suppression of this destructive phenomenon in order to obtain a generation at microwave and THz frequencies in devices operating at room temperature. We theoretically proved that an unbiased superlattice with a moderate doping subjected to a microwave pump field provides a strong gain at third, fifth, seventh, etc. harmonics of the pump frequency in the conditions of suppressed domains.Comment: 8 pages. Development of cond-mat/0503216 . Version 2: Final version, erratum is include

ЭТИОЛОГИЯ, ПАТОГЕНЕЗ И МОРФОЛОГИЯ ЭФФЕКТА QUILTY

Despite the fact that the study of endocardial infi ltrates (Quilty effect) in the transplanted heart has been going on for more than 30 years, the etiology, morphology and clinical signifi cance of this phenomenon are not yet fully understood. The article presents the facts of the available literature on the possible causes and mechanisms of the effect of Quilty, as well as on its impact on the function of the transplanted heartНесмотря на то что изучение эндокардиальных инфильтратов (Quilty effect) в трансплантированном сердце продолжается уже более 30 лет, этиология, морфология и клиническое значение этого феномена остаются до конца не выясненными. В статье приведены данные доступной литературы о возможных причинах и механизмах развития эффекта Quilty, а также о его влиянии на функцию трансплантированного сердца

Quantum squeezing of optical dissipative structures

We show that any optical dissipative structure supported by degenerate optical parametric oscillators contains a special transverse mode that is free from quantum fluctuations when measured in a balanced homodyne detection experiment. The phenomenon is not critical as it is independent of the system parameters and, in particular, of the existence of bifurcations. This result is a consequence of the spatial symmetry breaking introduced by the dissipative structure. Effects that could degrade the squeezing level are considered.Comment: 4 pages and a half, 1 fugure. Version to appear in Europhysics Letter

Multistable Pulse-like Solutions in a Parametrically Driven Ginzburg-Landau Equation

It is well known that pulse-like solutions of the cubic complex Ginzburg-Landau equation are unstable but can be stabilised by the addition of quintic terms. In this paper we explore an alternative mechanism where the role of the stabilising agent is played by the parametric driver. Our analysis is based on the numerical continuation of solutions in one of the parameters of the Ginzburg-Landau equation (the diffusion coefficient $c$), starting from the nonlinear Schr\"odinger limit (for which $c=0$). The continuation generates, recursively, a sequence of coexisting stable solutions with increasing number of humps. The sequence "converges" to a long pulse which can be interpreted as a bound state of two fronts with opposite polarities.Comment: 13 pages, 6 figures; to appear in PR