Abstract: The invention relates to means for the emergency abandonment of an aircraft and makes it possible to create a super-light and effective system for emergency abandonment which can be used in aircraft with a flight speed of 500-600 km/hour. This is achieved by at first catapulting a parachute pack (7) by means of an ejection mechanism (6) and then catapulting a member of the crew using an ejection mechanism (2). In order to ensure safety in the case of pair catapulting, the direction of catapulting of the parachute pack and the member of the crew is at an angle of 15-20.degree. relative to the plane of symmetry of the aircraft. Furthermore, the parachute pack is used as a means for breaking the transparency of the cockpit.

Abstract: A diamond-containing material having the following element content ratio in per cent by weight: carbon 75-90, hydrogen 0.6-1.5, nitrogen 1.0-4.5, oxygen the balance, the following phase content ratio in per cent by weight: roentgen amorphous diamond-like phase 10-30, diamond of cubic modification the balance, and having a porous structure. 10-20% of the surface of the material consists of methyl, nitryl and hydroxyl groups of two types, as well as functional oxycarbonic groups of the general formula O.dbd.R where R represents .dbd.COH, .dbd.COOH, .dbd.CO, .dbd.C.sub.6 H.sub.4 O or any of their combinations, and 1-2% of the surface constits of carbon atoms with non-compensated links. A method for obtaining said material consists in detonation of a carbon-containing explosive substance with negative oxygen balance, or a mixture of explosive substances, in a closed volume in the atmosphere of gases inert to carbon, with an oxygen content of 0.1-6.

Abstract: A new chemical compound, ketopantoyl aminobutyrate of formula I: ##STR1## and its salts. The compound is obtained by interaction of ketopantolactone and a salt of .gamma.-aminobutyric acid.It was shown that the new compound exhibits sedative, anti-amnesic and antihypoxic properties.

Abstract: The invention concerns a tobacco smoking article comprising a tobacco rod and a filter unit containing both organic and inorganic fibers wherein the inorganic fibers are basalt fibers with diameter of no more than 0.6 .mu.m.

Abstract: There is proposed a water treatment method by causing the water to be pured to flow through a first and a second compartments arranged in succession in an electrolysis cell divided by a permeable membrane into said first and second compartments. Each of the compartments accomodates an electrode, one of them being an anode, and the other--a cathode. Direct electric current is then passed through the water between the anode and the cathode, the current value being determined from the following equation:I=K.times.(C).sup.1/4 .times.Q,whereinI is the current amperage (A),C is the feed water mineralization equal to 0.1-1.5 g/l,Q is the water flow rate (1/hour), ##EQU1## the I/Q ratio being comprised within from about 110 to about 220 Coulomb/liter. The water is caused to flow successively from the anode compartment towards the cathode compartment. Once the water is discharged from the cathode compartment, it is subjected to filtering by passing the water through a bed of a porous carbonaceous material.

Abstract: A device providing for tribochemical regime in the lubrication system of a mechanism comprises a casing (1), a cover (2) with inlet openings (3) and an outlet sleeve (4) for the inlet and outlet of the oil, a non-return valve (5), a relief valve (6), a standard hollow full-flow filtering element (7), a tribochemical package consisting of coaxial perforated shells (8 and 9) enveloped in a filtering material (11), granulated alkaline reagent (12) placed between the shell (9) and the filtering element (7), as well as iodine with which is impregnated the filtering material (11) of the shell (8). The shells (8 and 9) consist of truncated cones with oppositely oriented bases. Their larger and smaller bases, respectively, are secured with tension on the casing of the relief valve (6), the larger base of the shell (9) is secured with tension on the outlet sleeve (4) and inside it is secured, at interference fit, a smaller base of the shell (8).

Abstract: In the spinning unit of a centrifugal spinning machine the yarn conduct (4, 5) mounted between the revolving tube (2) and the yarn spreader (8) is designed so as to open on the side of the rewinding unit consisting of a winding drum (17) and a cartridge holder (18). The yarn conduct opens without displacement of the yarn (28) from its longitudinal axis. This allows to reduce the friction of the yarn (28) against the wall of the yarn conduct (4, 5) during the spinning process and to reduce the friction of the yarn (28) against the wall and the upper end of the spreader (8) during the rewinding process, as well as to bring the rewinding unit closer to the spinning unit.

Abstract: A method and apparatus for boundary layer control by sucking air off the vortex chambers established in the trailing-edge portion of an aircraft aerodynamic surface. The rate of air bleed is controlled first by increasing it until the boundary layer is attached to the airstreamed surface, then by decreasing the rate of air bleed until the pressure in the trailing-edge aircraft portion starts decreasing. The aircraft equipped with the boundary layer control system, including a number of vortex chambers accommodating streamlined bodies and communicating, through a common passage and a receiver, with a low-pressure source.

Abstract: A method of preparing a mixture of ribonucleotides consisting in hydrolysis f yeast nucleic acid with pancreatic ribonuclease at a pH 4.5-5.5. Thereafter, separating the ribonucleotide fraction from the obtained hydrolyzate is effective on membranes with pores sized 50-150 .ANG. with subsequent purification and isolation of the end product.

Abstract: An apparatus for measuring hardness of materials has an indentor to be pressed into the surface of material, a rod in the form of a center plate having a shank rigidly secured to one end thereof and the indentor rigidly secured to the other end thereof. The apparatus also has a dynamometric gauge having a first branch thereof with a hole in which the shank of the rod is received. A second branch of the dynamometric gauge supports a spindle of a device for loading the indentor. One of the branches of the dynamometric gauge carries at least one pick-up for measuring the load at the indentor engageable with the other branch of the dynamometric gauge. The apparatus also has a device for measuring the depth of penetration of the indentor into the surface of material in the form of a frame having its opposed bars enclosing the first branch of the dynamometric gauge.

Abstract: A bearing assembly is designed for high-speed heavy-duty vertical shafts and has a casing (1), antifriction bearings (3) with outer (5) and inner (4) races, and a load redistribution system (A). The load redistribution system (A) has elastic members (7) provided between the outer races (3), rigid spacer sleeves (6) provided between the inner races (4), and coupling members (8) engaging one another and, via separating members (9), the elastic members (7).

Abstract: A heat engine speed governor in which a differential mechanism has its input shaft operatively connected to a unidirectional electric motor, an input shaft connected to a heat engine and an output shaft connected to a fuel metering member of the heat engine. An electric motor speed control channel has a measuring means for measuring speed of the shaft connected to an input of a device for forming a control signal which has a master input connected to an output of a device for forming an electric motor speed control program. A means for measuring speed of the input shaft in a channel for correcting the electric motor speed in accordance with the heat engine speed is connected to a differentiating unit having an output connected to a correcting input of the device.

Abstract: The centrifuge has a drive rotating a rotor whose position relative to the vertical axis of the centrifuge is monitored by an unbalance sensor located on the installation plate which is accommodated in a recess of the ring in a plane perpendicular to the vertical axis. The ring is installed on the mounting surface of the drive casing with a provision for being moved and set relative to said surface so that the plane of the ring is constantly parallel with the lower surface of the rotor. The installation plate has a hollow for accommodating the unbalance sensor, the shape of the surface of said hollow being mutually complementary with the shape of the mounting surface of the drive casing and the installation plate is located in said ring with a provision for moving in said plane perpendicular to the vertical axis.

Abstract: The composition is formulated as follows, in percent by weight:synthetic corundum material: 76.5 to 90.0kaolinite: 2.1 to 5.7feldspar: 2.8 to 7.6adhesive and moistening ingredient: 3.0 to 4.5calcium borosilicate frit: 2.1 to 5.7Calcium borosilicate frit compositon, in percent by weight, is as follows:silicon oxide: 22.0 to 38.0aluminium oxide: 14.5 to 15.5boron oxide: 25.0 to 35.0calcium oxide: 12.5 to 17.5sodium oxide: 4.0 to 7.5potassium oxide: 2.0 to 3.5The boron oxide-to-calcium oxide ratio is within 1.5 to 2.5.

Abstract: The proposed machine comprises a chamber accommodating a headstock and a tailstock. The headstock has a rotation drive, whereas the tailstock is capable of longitudinal movement along a guide. The machine also includes a rod carrying a spray gun capable of lateral reciprocations by a drive in guides secured on the carriage capable of moving longitudinally by a drive along a guide. The tailstock has a hole, whereas a table of a size smaller than the dimensions of the hole is secured on the guide. A rear wall of the chamber has a longitudinal slot, the chamber having a gate capable of longitudinal displacement and engageable with a hollow pusher secured on the carriage and receiving the rod. The drives are arranged at the outer side of the rear wall of the chamber.

Abstract: A flow amplifier in the hydraulic steering system of a transport vehicle comprises a three-position hydraulically operated hydraulic directional control valve having a single sliding spool valve and internal hydraulic pilot lines connected, when in the crossover position, to external portholes made in a sleeve of the three-position hydraulically operated hydraulic directional control valve provided with plungers spring-loaded on their outside end faces. The flow amplifier incorporates also a pair of intensifying chokes, a air of pilot chokes, and a pair of regulating chokes made in the sliding spool valve with a possibility of varying their restriction areas along the direction of travel of the sliding spool valve.

Abstract: The work-performing member for a farm machine has a cutting edge made of a high-carbon steel containing graphite in structurally free state in an amount of 0.5 to 1.32 percent of the total mass of the material.

Abstract: An intrauterine contraceptive device, comprising a strip with rounded-off ends, a rod connected to the strip to form a T-shaped element therewith, a fixing element for retaining the entire device in the uterine cavity, made as an elastic loop, and a coil fitted over the rod, the elastic loop of the fixing element having an arc-shaped base and two elastic arms connected to the base and secured to the strip at the base of the rod, which elastic loop is coplanar with the rod and strip and encompasses the rod.

Abstract: An intrauterine device includes a transversal member, a rod connected to the transverse member to form a T-shaped element therewith, a coil mounted on the rod, and a thread for dynamic monitoring of the IUD in the uterine cavity, the thread being passed over the transversal member at the place where the transversal member is connected to the rod and being interposed between the rod and the coil lengthwise the former.

Abstract: A process for producing sulphur from calcium sulphate wherein a charge is granulated from powder-like calcium sulphate and a carbonaceous component at a mass ratio of carbon of the carbonaceous component to calcium sulphate of 0.08-0.09:1 respectively; mixing of the resulting charge granules with a lump-like carbonaceous material at a mass ratio of carbon of the carbonaceous material to the charge granules (as calculated for dry solids) equal to 1:3-10 respectively; heating the mixture of the charge granules with the lump-like carbonaceous material in a vertical calcination furnace while continuously moving said mixture in a downward current simultaneously with counter-currently supplying an oxygen-containing gas; the maximum heating temperature being maintained within the range of from 1,100.degree. to 1,200.degree. C. and the temperature of the upper bed of said mixture in the furnace being maintained equal to 500.degree.-600.degree. C.