Ретикулярный эритематозный муциноз

This article presents modern data related to the clinical picture, pathologic features and treatment options of reticular erythematous mucinosis (REM). There is an opinion that REM, lupus erythematosus tumidus and Jessner - Kanof lymphocytic infiltration of the skin are similar nosological forms.Представлены современные данные, касающиеся клинической картины, патоморфологических особенностей и вариантов лечения ретикулярного эритематозного муциноза. Высказана точка зрения на тождественность таких нозологических форм, как ретикулярный эритематозный муциноз, опухолевидная красная волчанка и лимфоцитарная инфильтрация Джесснера - Канофа

Современные представления о дендритных клетках кожи

Based on the literature review this article is about the latest data of the classification and functions of dendritic cells in healthy skin and in disease.На основании обзора литературы представлены современные данные, касающиеся классификации и функций дендритных клеток в здоровой коже и в условиях воспаления

Кожные формы красной волчанки: патогенез, клиника, диагностика, терапия

This article contains the latest information about the mechanisms of development of lupus erythematosus based on the literature review. The modern classification of specific and non-specific skin lesions in lupus erythematosus is shown.The authors described the clinical pattern of cutaneous forms of lupus erythematosus very detailed. the data about pathological and immunological criteria for the disease diagnostics, modern methods of pharmacotherapy lupus erythematosus was classified.На основании обзора литературы в статье рассмотрены новейшие сведения о механизмах развития красной волчанки. Представлена современная классификация специфических и неспецифических поражений кожи при красной волчанке. Подробно описана клиническая картина всех кожных форм красной волчанки. Систематизированы данные о патоморфологических и иммунологических критериях диагностики заболевания, современных методах фармакотерапии красной волчанки

Structural phase control of (La1.48_{1.48}Nd0.40_{0.40}Sr0.12_{0.12})CuO4_4 thin films by epitaxial growth technique

Epitaxial growth of (La$_{1.48}$Nd$_{0.40}$Sr$_{0.12}$)CuO$_4$ thin films was studied by pulsed-laser deposition technique on three different substrates, SrTiO$_3$ (100), LaSrAlO$_4$ (001), and YAlO$_3$ (001). The (Nd,Sr,Ce)$_2$CuO$_4$-type structure appears at the initial growth stage on SrTiO$_3$ (100) when the film is deposited under the growth conditions optimized for (La,Sr)$_2$CuO$_4$. This (Nd,Sr,Ce)$_2$CuO$_4$-type structure can be eliminated by increasing the substrate temperature and the laser repetition frequency. Films on LaSrAlO$_4$ (001) maintain a La$_2$CuO$_4$-type structure as bulk samples, but those on YAlO$_3$ (001) show phase separation into La$_2$CuO$_4$- and Nd$_2$CuO$_4$-type structures. Such complicated results are explained in terms of the competition between lattice misfit and thermodynamic conditions. Interestingly the films with La$_2$CuO$_4$-type structure prepared on SrTiO$_3$ and LaSrAlO$_4$ show different surface structures and transport properties. The results indicate the possibility of controlling charge stripes of (La$_{1.48}$Nd$_{0.40}$Sr$_{0.12}$)CuO$_4$ as was demonstrated in (La,Ba)$_2$CuO$_4$ thin films by Sato et al. (Phys. Rev. B {\bf 62}, R799 (2000)).Comment: 5 pages, 6 EPS figure, accepted for publication in Phys. Rev.

Optical Properties of Layered Superconductors near the Josephson Plasma Resonance

We study the optical properties of crystals with spatial dispersion and show that the usual Fresnel approach becomes invalid near frequencies where the group velocity of the wave packets inside the crystal vanishes. Near these special frequencies the reflectivity depends on the atomic structure of the crystal provided that disorder and dissipation are very low. This is demonstrated explicitly by a detailed study of layered superconductors with identical or two different alternating junctions in the frequency range near the Josephson plasma resonance. Accounting for both inductive and charge coupling of the intrinsic junctions, we show that multiple modes are excited inside the crystal by the incident light, determine their relative amplitude by the microscopic calculation of the additional boundary conditions and finally obtain the reflectivity. Spatial dispersion also provides a novel method to stop light pulses, which has possible applications for quantum information processing and the artificial creation of event horizons in a solid.Comment: 25 pages, 20 figures, submitted to Phys. Rev.

MULTIFUNCTIONAL RASTER MOTION SENSOR

Background. Modern sensors as sources of information determine the level of quality of informationmeasuring and control systems of complex industrial-technological objects, especially in such science-intensive fields as power engineering, aviation, rocket-space technology, weapons and military equipment, etc. One of the tasks in the development of rocket-space systems is the measurement and control of movements of mechanical systems. The existing displacement sensors are not capable of simultaneous measurement of angular and linear movements. To solve this problem a displacement sensor was developed, which has extended functionality and is able to measure linear and angular movements simultaneously. Materials and methods. The amplitude-logic method of processing modulated signals from a raster displacement sensor was used in this work. In the course of the work, a design diagram of a multifunctional displacement sensor and a schematic diagram of the secondary converter were developed. Results. As a result of the conducted research, the possibility of creating a multifunctional displacement sensor capable of working in a wide temperature range of 20 ÷ 600 ℃, capable of simultaneously measuring linear and angular movements was confirmed

MATHEMATICAL MODEL OF A TRANSFORMER LINEAR DISPLACEMENT SENSOR

Background. At present, the efficiency of development and operation of modern automated systems of control and management of various technological processes is largely determined by the technical and economic characteristics of the primary transducers of information (sensors) among which the important place belongs to displacement sensors. The mathematical model of mutual inductive linear displacement sensors underlying the calculation algorithm developed on the basis of the solution of the boundary electrodynamic problem of interaction of a homogeneous alternating field with an electromagnetic rod is considered. Materials and methods. The systems of Poisson's and Laplace's equations with respect to the vector potential were used in this work. Results. As a result of this research, a mathematical model was proposed, which was used in the development of the TDS designed to measure the movements of the solar panels of a satellite vehicle in open space conditions

Complex conductivity of Y1−xPrxBa2Cu3O7\rm Y_{1-x}Pr_xBa_2Cu_3O_7 thin films measured by coherent terahertz spectroscopy

The complex transmission of Y_{1-x}Pr_xBa_2Cu_3O_7 single crystal thin films has been measured in the range 0.2-1.0 THz using time domain spectroscopy. The complex conductivity is calculated without using a Kramers-Kronig analysis. All of the superconducting samples show a peak in $\sigma_1(T)$ below $T_c$. The underdoped samples show a deviation from $1/(\alpha+\beta T)$ behavior above $T_c$ that may be linked with the onset of a spin gap.Comment: 2 pages, REVTEX 3.0, figures upon request. To appear in Physica C, and as a poster @ the M^2S-HTSC conference, Grenoble, 5 July 199