transport mechanical engineering. SUBSTANCE: automobile differential has half-axles with bevel gears coupled by bevel pinions. One of half-axles with bevel gear has axial development in the form of cylinder encircled by closed recess of elliptic form and semicircular section. Other half-axle with bevel gear has axial development in the form of sleeve enveloping cylinder. Sleeve is provided with in...

solar engineering for heat and power generation. SUBSTANCE: concentrator is made in the form of focusing prism of optically transparent material, has module working surface and reversing reflection face forming acute dihedral angle and photoconverters mounted at certain angle to these faces and to surfaces. Reflecting device is made in the form of mirror and mounted in a spaced relation to focusin...

information displays built on gaseous-discharge A C panels. SUBSTANCE: each indication electrode is manufactured from two conductors as minimum positioned at some distance one from another. Distance between nearest edges of conductors and distance between external edges of conductors in indication electrode made of two conductors are found from corresponding relations. EFFECT: increased brightness...

gaseous-discharge equipment, development of information displaying aids on A C gaseous-discharge indication panels. SUBSTANCE: one of indication electrodes in pair has width d1 lesser than width d2 of second electrode. Width d1 is chosen in agreement with relations d1>0.3d2, d1>0.2d3, where d3 is width of control electrode. EFFECT: enhanced reliability of control thanks to decrease of current load...

manufacture of lead-acid cells and storage batteries. SUBSTANCE: cells with unformed negative plates after assembly are subjected to partial discharge with current density 0.3-0.6 A/sq dm till 40-70% discharge of rated value of capacity is achieved under 20 hour mode. EFFECT: prolonged storage time, simplified storage conditions and reduced time of activation.

chemistry of polymers. SUBSTANCE: described is method of preparing rigid polyurethane foam by reacting polyisocyanate with compound having at least two hydrogen atoms which are active with respect to isocyanate groups with molecular weight from 92 to 10,000, in the presence of water, dissolving agent and alkane as blowing agent. Dissolving agent is diethyl carbonate or tributyl phosphate, or produ...

The invention provides for the use of a mixture of Si-C- and Si-O-C-linked silicone polyether block copolymers as an additive in the production of polyurethane foam.

The invention relates to a device and procedure to get information on what is stored in a cabinet or the like. The device is made up of a combination of a cabinet (110), a camera (112), a display unit (106), and an image processing unit (108). The camera (112) is placed in a position, from where it can take pictures of the contents of the cabinet (110), and the camera is connected to the image pro...

The invention relates to a device and procedure to get information on what is stored in a cabinet or the like. The device is made up of a combination of a cabinet (110), a camera (112), a display unit (106), and an image processing unit (108). The camera (112) is placed in a position, from where it can take pictures of the contents of the cabinet (110), and the camera is connected to the image pro...

production of oxide thermistor materials for manufacturing of electronic equipment. SUBSTANCE: material consists of the following molar ratio of strontium and lanthanide oxides: 51-53% of strontium oxide, 49-47 of lanthanide oxide. EFFECT: effective temperature range of 500- 1400 K. 2 dwg, 4 tbl

medicine. SUBSTANCE: method involves measuring intraluminal pressure and electric impedance of the whole esophagus wall at its different levels. To do it, two- canalled probe is introduced into proximal region of the esophagus. One of the canals is filled with liquid for measuring intraluminal pressure. The other one is used for measuring esophagus wall impedance. Proximal probe end is attached to...

manufacture of building materials. SUBSTANCE: method includes stirring of preliminarily dosed siliceous rock (tripolith, diatomite, opoka) with alkali component to form mix, which is placed in molds and heated for 30-60 min at 40-60 C, after which mix is heated to 800-900 C at heating rate 15 to 150 C/min and held 20-30 min at that temperature. EFFECT: increased water resistance of material. 3 tbl

organic chemistry, biochemistry. SUBSTANCE: invention describes the novel derivatives of amino acids or aminoalcohols of the formula (I) in any of groups I, II where N means nitrogen. Group I: X means CHR2OH where R2 means H, (lower alkyl)-amine or (lower alkyl)-imidazole; Y means Base-(CH2)n- where Base means nonhalogenated variable nucleoside base where n = 1-7; A means carbonyl; Z means H or O...

organic chemistry, heterocyclic compounds, pharmacy. SUBSTANCE: invention describes the novel derivatives of O6-guanine of the general formula (I) where Y means hydrogen atom, ribosyl or deoxypibosyl that can be substituted with hydroxy- or C1-C4-aklkoxy-groups; R1 means hydrogen atom, C1-20-alkyl or hydroxy-C1-20-alkyl; R means: (i) cyclic group containing five-membered ring with at least one he...

chemical industry. SUBSTANCE: described is method of preparing hemcitabin hydrochloride which comprises removing protecting group from beta-1-(2'-deoxy-2,2'- difluoro-3', 5'-di-o-benzoyl-D-ribofuranosyl)-4- aminopyrimidin-2-one in the presence of base and alcohol and subsequently treating the resulting solution with hydrochloric acid and antisolvent and isolating the resulting solid product. EFFEC...

A centralised power control system for a communications system and a method of centrally controlling power transmitted in the communications system are provided in which at least one active base station (14-20) is in communication with a remote unit (10). A first forward link frame of data is transmitted from a first active base station (14) to said remote unit (10) at a first power level and a pi...

industry, in particular, electric power plants. SUBSTANCE: some parts (ai) of electric power plant are controlled automatically. Said method involves setting features (mi), which describe process running in equipment, and preparation of parameters (Pi), which are important for process running in equipment. Then, for each equipment part (ai), method involves checking presence of each feature (mi) u...

silicon production. SUBSTANCE: molten silica is reduced with carbon to yield metallurgical silicon melt, which is powered into mold and gradually cooled to solid state. Height-to-area ratio is determined from inequality: H/(S/pi)1/2 >= 0.4, wherein H is height of liquid surface and S is mean area of cross-section of mold. As silicon cools, surface of liquid is heated or insulated to slow down hard...

powder metallurgy. SUBSTANCE: invention can be used for manufacturing boron carbide inserts for operation as neutron absorbers in nuclear reactor rods. Pressing is conducted in two steps: preliminary pressing is conducted at temperature no higher than 2000 C in mold with inside diameter by 3-4% lesser than required diameter of product, and final pressing is conducted in mold with inside diameter b...

electrical engineering; chemical current supplies and miscellaneous electrochemical devices. SUBSTANCE: for producing carbon plate incorporating current lead and carbon layer on at least one side, carbon powder is mixed up with high- molecular polyethylene, mentioned mixture is press-fitted onto at least one side of current lead at high temperature; used as carbon powder is soot whose specific sur...