[en] Dependences of natural frequency and damping factor of flexural vibrations of dielectric plate with superconducting coating on magnetic field were calculated for the cases of elastic vortex fixing in pinning centers and thermally activated flux. Influence of superconducting screen, installed parallel to the surfase of superconducting coating, on these dependences is considered. It is shown that the use of superconducting screen enables to reveal the mechanism of magnetic field penetration into superconductor

[en] Appearance conditions of instability of spatially uniform distribution of voids in irradiated metals are considered. Growth of spatially inhomogeneous fluctuations occurs near the point of kinetic phase transition of ordering. Method of correlation functions was used to analytically find irradiation and defect structure parameter values determining the transition point and wavelength of critical fluctuations

[en] Dependences of nature frequency and damping factor of flaxural vibrations of quartz resonator, coated with PbBi film were measured at different temperatures and oscillation amplitudes. Influence of Nb₃Sn superconducting screen, parallel to film surface, on these dependences was investigated. It is shown that obtained results can not be explained in the framework of the model of thermally activated flux

[en] It is shown that the treatment of inhomogeneous void swelling near grain boundaries in irradiated materials based on the rate theory by Brailsford and Bullough (1972) gives good quantitative description of all the significant experimentally observed features characterising the effect, including the formation of peaks of void swelling and denuded zones, and explains the observed shape of swelling profiles as well as the occurrence of anomalously large voids in the regions adjacent to grain boundaries. (author)

[en] The homogeneous distribution of voids in irradiated metals is unstable due to spatially inhomogeneous fluctuations. Void ordering by the incident flow to voids of radiation-induced vacancies and by the backward flow is studied theoretically. The latter flow can be provided with absorption of point defects by vacancy dislocation loops and/or with the emission of vacancies from voids

[en] The CAMAC crate intellectual controller, being the base of the data acquisition system designed for the HYPERON spectrometer is described. The modular controller is functionally and structurally divided into four parts: the crate dataway control module, the microcomputer module, the CAMAK dataway interface module, the immediate-access memory module. The microcomputer is made on the base of the KR1810VM86 microprocessor and equipped with 12 direct access channels

[en] Computer-aided design work station on base of a personnel computer intended for designing and debugging of digital and analog CAMAC units is described. A set of hardware and software which essentially diminishes time of designing and checkout of electronics is presented. 12 refs

[en] Some problems of the development and realization of a sharing system on the basis of the BESM-6 computer where the ES 1010 computer is used as a data concentrator are considered. Creating of hardware for the application of the BESM-6 computer in time sharing mode is described. The realization of an interface, specific features of using the pseudo-ternary code for data transmission are considered. A block-scheme of the sharing system based on the BESM-6 computer and orders used for programming the interface for the ES 1010 and BESM-6 computers are given

[en] Five minor triterpenoids have been isolated from the chloroform-soluble fraction of a methanolic extract of Thalictrum minus by chromatography on silica gel: (I) — oleanolic acid; (II) — oleanolic acid 3-0-α-L-arabinopyranoside; (III) — oleanolic acid 3-0-[0-β-D-glucopyranosyl-(1 → 3)-α-L-arabinopyranoside]; (IV) — oleanolic acid 3-0-[0-α-L-rhamnopyranosyl(1 → 2)-0-β-D-glucopyranosyl-(1 → 3)-α-L-arabinopyranoside]; and (V) — oleanolic acid 28-0-β-D-glucopyranoside 3-0-[0-β-D-glucopyranosyl-(1 → 3)-α-L-arabinopyranoside]. This is the first time that any of the compounds isolated have been detected in plants of the genusThalictrum. The possibility has been shown of determining the structures of triterpene glycosides on the basis of ¹³C NMR spectroscopy and FAB mass spectrometry without chemical transformations of the glycosides

[en] A study was made on the performance of the electrodeless drift chamber for measurement of electromagnetic shower coordinate. Experiments were conducted at the 3 GeV accelerator with positron beam. The chamber is filled by argon (82%) and isobutane (18%). The chamber sizes equal 20x30 cm, thickness - 2 cm, the maximal drift length-10 cm. Shower coordinate was determined only by time-digital converter with small dead time. High efficiency of shower detection, linearity of the ''drift time-coordinate'' relation and 1.95 mm spatial resolution are preserved up to the loads of 2x10⁴ shower/s per a wire