Abstract: The invention relates to zirconium-based alloys and methods for manufacturing thereof and may be used in nuclear power engineering. The invention, as claimed, solves the task of obtaining a zirconium-based alloy used for manufacturing fuel rods for the nuclear reactor core, which possess improved engineering and operational properties. The said zirconium-based alloy contains its components in the following weight percent ratio: niobium—0.9-1.1, oxygen—0.05-0.09, zirconium—the rest, and has the structure consisting of alpha-zirconium with oxygen irregularity zones not exceeding 30 nanometers, zirconium sub-oxide of non-stoichiometric composition, and beta-niobium. The inventive method of manufacturing the said alloy includes making stock of zirconium-containing material and niobium pentoxide as oxygen-containing and niobium-containing materials, stock treatment and manufacturing an ingot having the above composition.

Abstract: The invention can be defined in its most general form as a building unit, namely the sandwich panel with light core from corrugated sheet material in the form of zigzag crimp, and can be used in aircraft construction, as well as in shipbuilding and construction. Making use of the claimed invention will improve the weight efficiency, the strength and the manufacturability of the panel. The beneficial effect is attained due to the fact that the plane slanting ridges are connected along the protrusion and recess zigzag lines by means of curvilinear parts, whose radius is not less than the core material thickness, whereby along said parts is a line perforation enabling the adhesive material to get into the holes of the perforation in the course of core-skins assembling.

Abstract: This invention relates to nuclear engineering and may be used in structures of nuclear fuel assemblies, especially those used in PWR and BWR nuclear reactors. A fuel assembly comprises spacing grids comprising cells formed by orthogonal crossing plates. An insertable spacing element is installed in each cell, which is designed for fixing the fuel rod passing through the cell. In the spacing grids that are arranged between the first spacing grid and the last spacing grid downstream the coolant flow at least some cells, through which the fuel rods pass, are provided with deflectors designed for mixing the coolant flow. The insertable spacing element comprises a shell, which has a cross-section in the form of an octagon formed by four facets that are rounded and convex in the direction from the center of said element and by four facets located therebetween that are shaped and concave toward the center of the said element.

Abstract: The invention can be defined in its most general form as a device for sheet material corrugation by means of bending and can be used in production of light core for sandwich panels, and elements of heat-exchange apparatus. The device includes the pivotedly connected in-between shaping and auxiliary systems of dies (4) and the drive for their transformation including the system of vacuumization and the chamber (3) made of flexible gas-proof material where the latter of said systems is fixed. Used to set the system of shaping dies (4) into its initial plane state is the mechanism made in the form of rigid chamber with the perforated cap (2) providing the possibility to connect the chamber to the system of vacuumization. The device also includes the subsidiary flexible removable vacuum chamber (8) wherein the blank (6) from sheet material is placed in contact with the shaping system of dies (4).

Abstract: The present invention relates to N-acyl derivatives of amino acids and pharmaceutically acceptable salts thereof wherein n is 2 or 3; and R1 represents or pharmaceutically acceptable salts thereof, to novel processes for preparing the same, to use thereof as anti-allergic, anti-anaphylactic, anti-inflammatory and hypolipidemic agents as well as to a pharmaceutical composition comprising the indicated compounds in an efficient amount and to a method for treating allergic and inflammatory diseases and lipid metabolism disorders: bronchial asthma, allergic rhinitis, pollinoses, seasonal and year-round rhinitis, allergic pneumonitis, atopic dermatitis, psoriasis, urticaria, allergic (including anaphylactic) reactions to insect stings and medicaments, cold allergy, allergic conjunctivitis, atherosclerosis, obesity, ischemic heart and cerebral disease, myocardial infarction and stroke.

Abstract: The invention can be defined in its most general form as a device for sheet material corrugation by means of bending and can be applied in the devices for production of single curvature folded core used in production of aircraft and craft curvilinear panels. The invention has for its object to broaden the technological capabilities. For that the mandrel is made in the form of a set of alternating rows of plane elements (4, 6, 7) made in the form of trapeziums (4) and isosceles triangles (6, 7) fixed on the flexible material of the base (5) forming thus the gap-pivots between the elements. At the same time the bases of the triangular elements (6, 7) face each other in pairs along the bending lines while said bending lines correspond to the protrusions lines of the core folded structure. The base of the triangular elements (6, 7) is the function of the folded core block curvature radius and the geometrical parameters of the zigzag crimp structure.

Abstract: The device contains the transformable mandrel (12) made of plane elements (14) pivotedly connected in-between with the use of gas-proof fabric (15,16), the means for preliminary and final mandrel transformation including the flexible vacuum chamber and traverse-pusher (11) with the drive (10), and the mechanism for putting the transformable mandrel into its initial plan state made in the form of two parallel slabs (6, 7) with the drive for their reciprocal travel (9). The means for preliminary mandrel transformation is made in the form of the system of pushers placed in rows on the lower and the upper slabs with individual drives. The perforations in the slabs provide the possibility for the pushers to interact with the transformable mandrel placed between the slabs whereas the mandrel with sheet blank article is put into the vacuum chamber.

Abstract: The invention relates to nuclear engineering and can be used for fuel clusters of nuclear reactors, for distancing and fixing fuel elements, in particular in the fuel clusters of PWR and BWR reactors. The inventive distance lattice comprises cells which are used for mounting the fuel elements or guide channels and are formed by perpendicular crossing plates. Bent blades for mixing a coolant are embodied on the plate edges at the output of said coolant. Each cell is provided with an insertable distancing element for fixing the fuel element. Said invention makes it possible to increase the turning rigidity of the cells and the stability thereof, to simultaneously reduce the size of the fixation of the fuel elements or the guiding channels in the cells and to decrease the hydraulic resistance of the lattice.

Abstract: The invention can be defined in its most general form as the method for sheet material corrugation and can be used for production of aircraft curvilinear sandwich panel folded structure light corrugated core. With the aim to broaden the technological capabilities the corrugated blank is compressed from its sides to joining of ridges providing in its lateral section the curvature radius defined by the curvilinear folded structure design parameters and fixed in such condition block is thermally treated for inner stresses relief in the article material whereupon it is stretched to the curvilinear folded structure parameters given.

Abstract: The inventive method is used for optimising a hot and/or cold strip mill process.

Abstract: The invention relates to well reamer for borehole reaming within a specified interval. The well reamer has a housing with inclined slots, radial holes and a central straight-through channel, in which a spring-loaded rod with holes in the upper and lower parts is located. The upper holes of the rod are covered when the operating elements are extended into an operating position. A plurality of legs, including cutters rotatably supported on the legs, are moved by pistons between an operating position and a transport position along the inclined slots. Free-ends of the pistons may be connected to the rod by sliders, which are movable radially into openings in the rod to connect the rod to the pistons to move the rod with the legs.

Abstract: This invention relates to the field of cosmetology and/or dermatology and concerns a use of preparations that influence indices of blood microcirculation in the skin. Aim of this invention is the use of perfluoride emulsions for essential increase of the skin blood flow and for improving conditions of the blood flow regulatory systems, such as neurogenous and endocrine systems, and for improving adaptive reactions of the skin integument.

Abstract: The inventive method for producing refractory high-strength spherical granules consists in separately presintering kaolin and bauxite in a rotational furnace, jointly sintering said components in order to produce a charging material, granulating, drying and screening said charging material, sintering said granules in the rotational furnace and screening the sintered granules. Said sintered kaoline is produced by sintering at a temperature ranging from 1400 to 1500 DEG C so far as a water absorption of 5% is attained for kaoline containing 40-45 mass % and a free quartz in a quantity equal to or greater than 60 mass %. The Al2O3:SiO2 ratio in the charging material is equal to 1:1 at the following charging material component ratio: 36-67 mass % sintered kaolin and the rest being sintered bauxite.

Abstract: The invention can be defined in its most general form as a technology for production of corrugated structures from foliated composite materials and can be used for production of sandwich panels used in aircraft construction, shipbuilding, and in building units.

Abstract: The invention can be defined in its most general form as a method for production of sandwich panels with zigzag corrugated core (2) from sheet material used in aircraft construction, shipbuilding, and other branches of industry. With the aim to improve the quality and ease of sheet blank folding into the 3-D relief structure in the sheet blank at locations of crimp zigzag lines (4) protrusions and recesses the holes are punched with the diameter not less than the sheet blank bending radius.

Abstract: A device for expansion and calibration of profile pipes, such as profile liners, with cylindrical threaded ends in their installation in a well. The device has a plurality of in-series connected mandrel assemblies, each of which has a housing with a central straight-through channel and inclined slots, in which rains are fastened and hinge-connected through pushers, tightened with respect to the housing, with a spring-loaded rod, accommodated in the central straight-through channel of the housing. Rods of an upper mandrel assembly are spring-loaded for holding the rams in nonoperating position, and rods of a lower assembly are spring-loaded for holding the rams in operating position. The lower mandrel assembly is provided with a choke. The Maximum diameter of a circle circumscribed about each mandrel assembly in its working position decreases from the upper assembly to the lower one.

Abstract: The invention can be defined in its most general form as the method for sheet material corrugation and can be used for production of aircraft curvilinear sandwich panel folded structure light corrugated core. With the aim to broaden the technological capabilities the corrugated blank is compressed from its sides to joining of ridges providing in its lateral section the curvature radius defined by the curvilinear folded structure design parameters and fixed in such condition block is thermally treated for inner stresses relief in the article material whereupon it is stretched to the curvilinear folded structure parameters given.

Abstract: The invention relates to non-ferrous metallurgy and may be used for zinc and indium containing materials processing resulting in fine indium powder production by converting indium into a salt compound and subsequent treatment of the latter with a water solution in two stages using a water re-distillate and an acetic acid solution.

Abstract: The inventive method for producing refractory high-strength spherical granules consists in separately presintering kaolin and bauxite in a rotational furnace, jointly sintering said components in order to produce a charging material, granulating, drying and screening said charging material, sintering said granules in the rotational furnace and screening the sintered granules. Said sintered kaoline is produced by sintering at a temperature ranging from 1400 to 1500 DEG C. so far as a water absorption of 5% is attained for kaoline containing 40-45 mass % and a free quartz in a quantity equal to or greater than 60 mass %. The Al2O3:SiO2 ratio in the charging material is equal to 1:1 at the following charging material component ratio: 36-67 mass % sintered kaolin and the rest being sintered bauxite.

Abstract: The inventive spark arrester comprises an odd number of series-connected spark units forming a chain, with each spark units comprising at least one discharge gap. In order to increase the reliability of protection of electric installation components having a flat voltage—time characteristic by ensuring a low discharge level and a fast response of the arrester, the output of each even spark unit is connected via a resistor to a clamp connecting the arrester to the protected components subjected to a high potential, while the output of each odd spark unit, except the last one, is connected via another resistor to another clamp connecting the arrester to the protected components subjected to a low potential. Preferred embodiments of the arrester promote a generation of a long surface discharge along a surface of tubular body made of a solid dielectric, said body being common for all spark units constituting the arrester.