FIELD: mechanical engineering; abrasive treatment of plane, plane-parallel, cylindrical and spherical surfaces in finishing, grinding and polishing operations. SUBSTANCE: special grooves are made on working surface of tool with profile in form of round segment with depth of delta = (0,3 - 1,8)da, and width of a = (20-200)da where da is graininess of abrasive. Surface of ...

FIELD: transport engineering. SUBSTANCE: proposed differential is designed to increase cross-country capacity and safety of vehicle by additional hand locking of driving wheels when moving straight ahead under extreme conditions for engine braking and to provide operation of differential when moving backwards over curved road of good state by transmission of torque separately to left and right sid...

FIELD: bore-hole drilling technology. SUBSTANCE: this relates to simultaneous transmission of information on mode of dynamic interaction of drilling bit and bottom-hole and about rotation speed of drilling bit in bottom-hole in process of drilling. Above process is achieved due to combined usage of intermediate mechanical communication link which is represented by shaft of turbo-drill, and hydraul...

FIELD: measurement technology; vibratory sensors of angular velocity and linear acceleration for inertial navigation. SUBSTANCE: sensor has base carrying flat plate whose inner space mounts external frame made of two parts and internal frame, both joined together and to plate through flexible connections, generator, and power converters for exciting frame vibrations, as well as angular position se...

La présente invention se veut principalement un appareil d'exercices: - d'auto-massage corporel sur des parties antérieures et postérieures avec étirement - de suspension pour étirement corporel postérieur - de redressement, pour un renforcement dorsal et abdominal

FIELD: seismic prospecting for mineral resources. SUBSTANCE: method is aimed at increased profitability for direct search for oil and gas fields and improvement of ecological situation. In agreement with it natural seismic background is registered by three components by means of two geophones as minimum before and after generation of seismic vibrations with frequency of 0.1-70.0 Hz. Availability o...

The invention relates to dental composites made of customary materials including: polymerizable monomers, initiators, fillers and other auxiliaries; and, additionally containing salts of acid-functional polymers, wherein the salt comprises mono- or polyvalent cations. Preferably, the salts of acid-functional polymers are cured glass ionomer cements. The dental compositions of this invention are pl...

FIELD: building materials. SUBSTANCE: binding agent is produced by mixing aluminium hydroxide and ferrous (II) oxide with ortho-phosphoric acid of density ρ = = 1.37-1.49 followed by hardening in air. Method involves the use of aluminium hydroxide of residue in sieve N 008 60-61% and finely divided aluminium hydroxide of residue in sieve N 008 5-7%. After hardening for 3 days phosphate product is ...

FIELD: highway engineering, in particular, selective repair of defective upper layers of pavement. SUBSTANCE: method involves milling of defective pavement to provide sides with negative inclination angle, grinding scrap, mixing it to binder and hardener agent, filling mix with water, casting and compacting it by vibration under load for 2-5 minutes, keeping without load for 50-60 minutes, finally...

FIELD: organic chemistry. SUBSTANCE: invention proposes derivatives of 2-deoxy-2,3-dehydro-N-acetylneuraminic acid of the formula (I) where R is azide or group -NR6bR being R is hydrogen, C1-6--alkyl or allyl; R is NHCOR where R is C1-6-alkyl, or their pharmaceutically acceptable salts and ester salts. Method of synthesis of c...

A board is disclosed as comprising magnesium oxide and magnesium chloride which collectively constitute between 20% and 60% of the total volume of the board, an d at least one organic filler material constituting between 20% and 80% of the total volume of the board. The filler material comprises sawdust material, kiln dust and ashes.

FIELD: prosthetics. SUBSTANCE: artificial food has carina made in the form of monolithic cantilevered rod of hardened polymer secured to standard prosthesis by means of connecting member. Foot coat is molded onto carina. Protection member is made as bent plate manufactured of flexible material, secured between carina and connecting member and molded into foot coat. EFFECT: enhanced safety. 7 dwgn

FIELD: saving of raw materials, environmental control, production of pure water. SUBSTANCE: method of purification of technological water coming from intake includes determination of concentration of pollution in it, its passing through filters and electromagnetic field. Processes of filtration and electromagnetic treatment are time-integrated and flow of liquid is subjected to action of electroma...

FIELD: building industry. SUBSTANCE: dry building mixture has the following components, mas. p. p.: cement 45-55; sand 45-55; plasticizer based on methylcellulose and methylhydroxypropylcellulose 0.4-0.5, and lime mixture for mining drilling works æêâü 0.5-2.0. EFFECT: improved property of mixture.

Data sequentially read from a storage device, such as a CD-ROM, in which program data and moving picture data are alternately recorded, is divided into program data and moving picture data by a demultiplexor. The moving picture data is stored in an image data storage region of a main memory. The moving picture data is then expanded by an MPEG decoder and is transferred to a decoded image buffer, a...

FIELD: membrane purification of liquids. SUBSTANCE: invention relates to reverse-osmosis membranes used for desalting natural and man-made waters. Method consists in washing working side of membrane by water- salt solution containing preliminarily added hydrotropic substances followed by washing with desalted water and detergent solution containing chelate or another complex-forming agent whose pH...

FIELD: equipment for drying biological materials, for example, food, medical preparations, vegetables and fruit. SUBSTANCE: plant has two hermetic chambers and three vacuum pumps interconnected in series by means of pipe line. Each chamber is connected respectively to end pumps. Each chamber has individual heating and cooling system with desublimator. Chambers are fitted with shelves. Device is pr...

FIELD: digital signal processing. SUBSTANCE: local decoders of MPEG compression controllers generate rounding-off errors caused by lack of standard for rounding off such results as *.5, where *. is integer. Such errors appear when set of transform coefficients which are generated by compression, is subjected to reverse orthogonal transform. Described method involves preliminary processing of trans...

FIELD: medicine; orthopedics. SUBSTANCE: fixative is made as cushion with rigid base on which flexible cover-plate with vertical concavity is secured. Cover-plate has horizontal convexity. Its form coincides with natural curvature of vertebral column. Fixative is provided with fastening belts. EFFECT: provision for prophylaxis and treatment of vertebral column curvature directly in professional ac...

FIELD: medicine; orthopedics. SUBSTANCE: posture corrector has flexible cover-pate and straps with cuffs. With some ends straps are sewed onto cover-plate, and other ends of straps are passed through buckles secured to cover-plate which has concavities. It presses internal edges of shoulder blades and is fitted with springy stiffening ribs. Its plane (surface) adjacent to patient's back is provide...