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Liposomal nano-means based on products derived from turmeric rhizomes Cosmetic transdermal liposomal nano-means comprising an active ingredient as tetrahydrocurcumin dissolved in ethoxydiglycol, turmerone, lecithin, EO-PO block-copolymer, a preservative, and water at a certain component ratio. |
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Composition for obtaining protective coatings with low refraction indexes Composition represents "ripe" solution of film-generator in solvent of general formula CnF2n-1H3O or CnF2nH2O, n=2-5, wherein as film-generator applied is mixture of polyogranosiloxanes with molecular-weight characteristics Mw=1000-160000, Mn=900-70000, which is result of polycondensation of products of reaction of hexafluoracetone and 3-aminopropyltriethoxysilane. |
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Method of producing of composite material of carbon-nickel system Composite material of carbon-nickel system is produced by application of the metal active component in form of solution of nickel azide on porous carbon base, its porous impregnation through full volume with further restoration by hydrazine hydrate to metal nanosize nickel in high alkaline medium at pH ≥12 and temperature 90-100°C. As the carbon base the porous coal matrix with volume of micro- and mesopores 0.31 cm3/g and 0.43 cm3/g, respectively, and specific surface 1113 m2/g. Size of nickel particles in the micropores is 2 nm, in mezopores - 3-15 nm, and on matrix surface and in interporous volume 80-150 nm. |
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Method of determining orientation of nv defects in crystal Method of determining the orientation of NV defect in a diamond crystal comprises placement of a sample of the diamond crystal in an external magnetic field, exposure to the sample to microwave radiation, the irradiation of the working volume of the sample with a focused laser radiation exciting in the working volume of the sample photoluminescence on which the signal of optically detected magnetic resonance (ODMR) is recorded, which is created by sweeping the frequency of the microwave radiation and the modulation of the external magnetic field. The ODMR spectra of NV defect are measured in a diamond crystal at different orientations of the diamond crystal relative to the external magnetic field. The received dependences of ODMR lines are compared with the calculated positions of the lines of NV defect in a diamond crystal in a magnetic field. Then, the orientation of the NV defect is determined on the value of the position deviation of the NV lines of the defect from the calculated position of the lines. |
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Cellulosic nano-filaments and methods of their production Invention relates to chemical technology of cellulosic materials and relates to cellulosic nano-filaments and the method of their production. The nano-filaments are thin filaments with a width of micron interval, the length of 2 mm, and made from natural fibres of wood and other plants. The nano-filament surface may be modified so that it comprises anionic, cationic, polar, hydrophobic or other functional groups. Insertion of the nano-filaments in the batch to obtain paper improves significantly the strength of the wet cloth and strength of the dry sheet much better than the existing natural and synthetic polymers. |
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Disclosed is a photocathode made from a high-purity semiconductor, wherein an optical radiation detecting semiconductor layer is situated on an optical radiation-transparent substrate, the thickness (d) thereof is linked to the radiation absorption coefficient (α) by the relationship d≈(2-5)·α-1, an ohmic contact is made on the periphery of the layer, and on the front surface of the high-purity semiconductor there is a dielectric layer with a nanometre thickness and a receiving electrode, separated from the dielectric layer by a vacuum gap and made in the form of films of conducting material which is semi-transparent for optical radiation and a phosphor, consecutively deposited on the light-transparent substrate. |
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Raw material mixture for high-strength fibre-reinforced concrete Raw material mixture for high-strength fibre-reinforced concrete, which includes Portland cement, quartz-fieldspar sand FM = 2.1, reinforcing component, silica-containing additive and water, as reinforcing component contains basalt fibre, obtained by centrifugal-blast method, and as silica-containing additive - nanodisperse powder of silicon dioxide Tarkosil-05, with the following component ratio, wt %: Portland cement - 23.28-27.37; quartz-fieldspar sand FM = 2.1 - 63.37-66.36; basalt fibre - 0.93-1.09; nanodisperse powder of silicon dioxide Tarkosil-05 - 0.12-0.14; water - 9.31-10.95, with application of nanodisperse powder of silicon dioxide Tarkosil-05, preliminarily subjected to processing in ultrasonic disperser together with mixing water for 10 minutes, and Portland cement together with basalt fibre is mixed in vibro-grinder for 45 seconds. |
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Invention relates to photovoltaic devices, particularly thin-film composite materials which are suitable for making flexible high-efficiency solar energy converters, and also to nanocrystalline layers based on low annealing point titanium dioxide for use in dye-sensitised solar cells and methods for production thereof. Said materials comprise a transparent substrate with a transparent conducting layer and a film deposited on said substrate, said film containing dye-sensitised metal oxide crystalline nanoparticles, particularly titanium dioxide, and polymer binder (polylinker) formed by products of polycondensation of organotitanium compounds - titanium alcoholates. The latter can be alcoholates with a chelating organic substitute, alcoholates with variable structural properties in hydrolysis and mixtures of said alcoholates in different ratios, and/or products of partial hydrolysis of said alcoholates. The invention also discloses a liquid precursor of said polylinker and a method of producing the latter, which includes a step for controlled hydrolysis of titanium alcoholates. Also described is a method of depositing a film on a substrate used to obtain said thin-film composite material, where said liquid polylinker precursor is used. |
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Treating and preventing hiv infection Group of inventions refers to the long-term use of an parenteral formulation for producing a medicinal preparation for treating a HIV-infected individual with the above preparation applicable for subcutaneous or intramuscular injections and consists of brecanavir, or its salt in the form of an aqueous micro- or nanoparticle suspension containing Polysorbate 20, and is administered at regular intervals from 6 to 12 months, and to the above pharmaceutical composition. |
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Separation of polydisperse particles is realised in complex plasma, in which dust component is formed from initial polydisperse powder. To create complex plasma low-temperature plasma with specified parameters is formed in discharge tube. Electric and thermal fields and particle charging are controlled by changing plasma parameters with setting parameters of selected particles. In this way, selection of particles of specified sizes and shape, their retaining in gravity field with further removal from discharge chamber are performed in complex plasma. |
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Carbon-carbon composite material and method of making articles therefrom Invention is intended for use in chemical, chemical-metallurgical, aviation and space industry. The method includes forming a frame from carbon-carbon composite material (CCCM), filling pores thereof with dispersed carbon filler by growing, in said pores using a catalytic gas-phase method, nanosized carbon in the form of particles, fibres or tubes until achieving content thereof of 3.7-10.9% of the weight of the fibrous frame; saturating with a pyrocarbon matrix using a thermoplastic method with excess methane pressure of 0.025-0.03 kgf/cm2, temperature in the pyrolysis zone of 840-920°C and movement speed thereof of 0.1-0.25 mm/h. The obtained CCCM contains said components in the following amount, wt %: carbon fibre - 38.7-46.1; nanodispersed filler - 1.7-4.2; pyrocarbon matrix - 49.7-59.6; and has density of 1.41-1.55 g/cm3. The nanodispersed carbon filler is contained in both inter-fibre pores of the frame and inter-filament pores of the carbon fibres. |
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Single junction solar cell comprises p-silicon substrate of p-type Si(100) pretreated HF acid. Substrate top surface is provided with the ply of 4-5 nm deep n-type film of amorphous silicon nitride mixed with silicon nitride of nanocrystalline structure applied by magnetron sputtering in argon from solid-state Si3N4 target. Electric contacts are produced by magnetron sputtering. Note here that contacts on element top side are made of Ag and shaped to a comb. Note also that rear electric contact on Si(100) substrate back is made of Ag or Cu. |
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This invention relates to strong nanopaper. Nanopaper is described, containing clay and microfibrillated cellulose MFC, where clay is a silicate with flaky or plate structure, and where MFC nanofibres and flaky clay are aligned substantially in parallel to the surface of the paper, at the same time nanopaper additionally includes a water soluble binding agent, which is positively charged, when it is in an aqueous solution, and which represents chitosan, and clay includes particles of nanometer range of sizes, besides, length of MFC nanofibers amounts to 5-20 mcm, and the transverse size of MFC nanofibers makes 10-30 nm. The method of production of the above nanopaper is described, Also a coating is described, which includes the above nanopaper, and the method of nanopaper coating application on the surface. The application of the above nanopaper is described. |
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Carbon nanofibre and method of obtaining of multiwall carbon nanotubes Invention relates to nanotechnology. Carbon nanofibre with outer diameter 50-300 nanometres contains external shell from amorphous carbon and core from more than 1, but no more than 20 separate one-wall or double-walled carbon nanotubes. The method of obtaining of multiwall carbon nanotubes consists in annealing of the named carbon nanofibre at 2000-3200°C in absence of oxygen, for example, in the medium of inert gas, nitrogen or carbon dioxide. |
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Nanoparticles, containing carbon and ferromagnetic metal or alloy Invention can be used in medicine in production of contrast substances for obtaining images by method of magnetic resonance or fluorescence, means for drug delivery, cell labels. Carbon-containing particles from the group, containing microcrystalline cellulose, colloid carbon and their mixtures, are soaked with water solution of at least one precursor of ferromagnetic metal, such as salt of citric, acetic or formic acid, hydroxyacids or ammonium citrate. Soaked particles are dried and heated in inert and in fact oxygen-free atmosphere at temperature 450-600°C or higher than 700°C. Obtained nanoparticles contain graphite carbon and 3-100 particles of at least one ferromagnetic metal, at least partly encapsulated in graphite carbon. Ferromagnetic particles additionally include metal, selected from the group, containing nickel, cobalt, noble metals and their combinations. |
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Method of producing diamond-containing composition Invention relates to a method of producing a diamond-containing lubricating composition by mechanically mixing initial oil with a surfactant dissolved therein and detonation diamond-containing carbon pre-dried by vacuum drying in amount of 5-10 wt % at 80-110°C, wherein the surfactant used is a cationic nitrogen-containing surfactant in amount of 2-10% of the weight of the detonation diamond-containing carbon, and mixing is followed by holding for not more than 60 minutes in order to remove excess air, followed by treating the composition on a vibration-cavitation homogeniser at 80-110°C and feeding said composition into a separator, wherein the composition is fed onto the working surface of the rotor of the vibration-cavitation homogeniser in amount of not more than 0.5 g/cm2·with rotary speed not less than 15 m/s. |
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Composition, method and system for rotary system balancing Invention relates to improved balancing composition, in particular to improved thixotropic balancing substance for balancing rotary system, such as system of mechanical traction of vehicle, aircraft or vessel or mechanical system of drive of machinery for processing things, as well as for reduction of vibrations in rotary system, and to method of processing and system. Composition for rotary system balancing contains certain quantity of thixotropic balancing substance, is characterised by distribution of certain quantity of hydrophobic particles in said quantity of said thixotropic balancing substance. Surfaces of said hydrophobic particles contain fluorocarbon, for instance, fluoropolymer, such as polytetrafluoropolyethylene copolymer of fluorinated ethylene-propylene, in particular, copolymer of tetrafluoroethylene, hexafluoropropylene, perfluoralcoxy or copolymer of ethylene-tetrafluorethylene, or silicon or their combination. Thixotropic balancing substance can represent balancing gel, which contains two components, namely base in form of liquid and thickening agent. |
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Modified polyester composition and method for obtaining thereof Invention relates to modified polyester compositions comprising polyester resin modifiers on the basis of nano oxides. Disclosed polyester composition is used as a binder, comprising polyester resin with a modifier based on nano particles of the oxides selected from SiO2, Al2O3, MgO, ZrO2, CeO2, TiO2, ZnO, FeO, Fe2O3, Fe3O4 and SnO, and containing a C2-C16 fragment with at least one hydroxyl group, and covalently bonded by the said hydrocarbon C2-C16 fragment with the said polyester resin; and a polyester resin modifier based on nano particles of the oxides selected from SiO2, Al2O3, MgO, ZrO2, CeO2, TiO2, ZnO, FeO, Fe2O3, Fe3O4 and SnO, comprising unsaturated C2-C20 groups, selected from the C2-C20 alkene, C2-C20 alkine or C2-C20 cycloalkene, covalently bonded by oxygen with the surface of the said nano particles. Disclosed method for polyester composition is used as a binder, comprising a) providing a polyester resin with a modifier based on nano particles of the oxides selected from SiO2, Al2O3, MgO, ZrO2, CeO2, TiO2, ZnO, FeO, Fe2O3, Fe3O4 and SnO, and containing a C2-C16 fragment with at least one hydroxyl group, and covalently bonded by the said hydrocarbon C2-C16 fragment with the said polyester resin; b) combining the said polyester resin with the modifier based on nano particles of the oxides selected from SiO2, Al2O3, MgO, ZrO2, CeO2, TiO2, ZnO, FeO, Fe2O3, Fe3O4 and SnO, comprising unsaturated C2-C20 groups, selected from the C2-C20 alkene, C2-C20 alkine or C2-C20 cycloalkene, covalently bonded by oxygen with the surface of the said nano particles. Disclosed modified polyester resin, comprising a modifier is based on nano particles of the oxides selected from SiO2, Al2O3, MgO, ZrO2, CeO2, TiO2, ZnO, FeO, Fe2O3, Fe3O4 and SnO, comprising C2-C16 fragment with at least one hydroxyl group, and covalently bonded by the said hydrocarbon C2-C16 fragment with the said polyester resin; and method for obtaining thereof. Disclosed a polyester resin modifier based on nano particles of the oxides selected from SiO2, Al2O3, MgO, ZrO2, CeO2, TiO2, ZnO, FeO, Fe2O3, Fe3O4 and SnO, comprising unsaturated C2-C20 groups, selected from the C2-C20 alkene, C2-C20 alkine or C2-C20 cycloalkene, covalently bonded by oxygen with the surface of the said nano particles; and method of obtaining thereof. Also described a product resulting from curing of the said polyester composition, and described use of the said polyester composition for the production of a composite material. |
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Catalyst contains noble metal nanoparticles on a mesoporous support. The noble metal in the catalyst is silver nanoparticles with average size of 2-5 nm, and the support is a mesoporous organometallic coordination polymer NH2-MIL-101(Al) with specific surface area greater than 2000 m2/g and mesopore volume of not less than 1.9 cm3/g, with the following ratio of components, wt %: Ag - 0.5-5, support - the balance. |
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Means for treatment and prevention of sleep disorders Invention relates to means for treatment and prevention of sleep disorders, which represents glycine conjugate, immobilised on particles of detonation nanodiamond with size 2-10 nm, with content of glycine to 21±3 wt %. |
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Method of production of zirconium carbide Method means rubbing through sieve of the charge having stoichiometric composition out of zirconium dioxide and carbon material with further heating in electric resistance furnace with graphite tube. At that heating is performed at temperature 1800-1900°C with holding at this temperature for 20-25 minutes, specific surface area of the carbon material is 138-160 m2/g, and nanofibre carbon is used as carbon material. |
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Method of preparing mesoporous catalyst for producing high-index synthetic decene base oils Method includes mixing tetraethyl orthosilicate and chromium nitrate nanohydrate, followed by adding the mixture to 0.28 M HCl solution with pH 5.2-5.5; mixing the solution for 2-3 hours at room temperature and adding to a solution containing Pluronic 123 surfactant in 0.28 M HCl with pH 5.2-5.5; mixing the obtained mixture at 40-45°C for 3-4 hours; holding in an autoclave with a teflon insert at 110-120°C for 10-12 hours; separating the solid product by filtering; drying at 100-120°C for 2-3 hours and annealing in an air current at 500-550°C for 4-5 hours. The obtained catalyst is characterised by a high specific surface area of 723 m2/g, pore volume of 2.154 cm3/g and average pore diameter of 117 E. |
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Method for modification of nanosized titanium dioxide with manganese Nanosized titanium dioxide is modified with manganese by adding potassium permanganate to the reaction mixture. Ammonia is used as a reducing agent for permanganate ions. Titanyl sulphate solution TiOSO4·2H2O reacts in diluted sulphuric acid with potassium permanganate and ammonia solutions. The reaction mixture is then heated at 80-95°C and HCl is then added. The precipitate is filtered out, washed with water and acetone and then dried on air at room temperature. |
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Cooling device based on nanofilm thermal modules Invention relates to cooling and heat removal systems, for example to cooling devices of electronic components. A thermoelectric device is made in the form of a multilayered thermal module, in which as semiconductor branches of p type and n type there chosen are such materials that the current flowing from p type to n type will create radiation, and when the current flows from n type to p type, heat energy will be absorbed according to Peltier effect; with that, each layer of the thermal module stage is made in the form of a nanofilm of a tubular structure, in which parasitic heat releases will be almost reduced to zero due to lower ohmic resistance of materials of the thermal module at tunnelling of electrons through junctions. |
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Method for producing aspirin nanocapsules in sodium alginate Invention refers to chemical-pharmaceutical industry and represents a method for drug encapsulation by non-solvent addition,differing by the fact that a nanocapsule core is aspirin, and a coating is sodium alginate deposited from butanol suspension by adding carbon tetrachloride as a non-solvent and water that is followed by drying at room temperature. |
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Invention relates to the technology of nanoelectronic devices based on graphene. The electronic device based on graphene comprises a graphene layer having a first work function and a metal oxide film located on the graphene layer, and the metal oxide film has a second work function exceeding than the first work function. The electrons are transferred from the graphene layer to the metal oxide film, forming a layer of accumulation of holes in the graphene layer. |
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Multilayer electroconductive coating based on thermoresistant binding agent Multilayer electroconductive coating based on thermoresistant binding agent has at least two current-conducting layers of equal in strength carbon filler of harness-satin or broken twill, at least two dielectric layers alternated with the above current-conducting layers. The current-conducting layers have electric resistance of less than 10 Ohm. The dielectric layers comprise epoxy or cyanether binding agent with glass-transition temperature of 200-280°C and temperature of destruction commencement of 320-420°C and particles with size less than 100 nm containing carbon phase. The electroconductive coating has the following ratio of components, wt %: carbon filler 55-66, epoxy or cyanether binding agent 33.95-42, particles with carbon phase 0.05-3. |
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Method of producing nanocapsules of gibberellic acid Invention provides a method of encapsulating a preparation via a nonsolvent deposition method, characterised by that the core of the nanocapsules used is gibberellic acid, the envelope used is carrageenan, which is deposited from a suspension in benzene by adding tetrachloromethane as a nonsolvent, followed by drying at room temperature. |
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Method of producing nanocapsules of 2-cis-4-trans-abscisic acid Invention provides a method of encapsulating a preparation via a nonsolvent deposition method, characterised by that the core of the nanocapsules used is abscisic acid, the envelope used is carrageenan, which is deposited from a suspension in benzene or hexane by adding tetrachloromethane as a nonsolvent, followed by drying at room temperature. |
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Method of producing nanocapsules of cytokinins As nanocapsule cores cytokinin agricultural preparations are used , the envelope is sodium alginate, which is deposited from a suspension in isopropanol by adding tetrachloromethane as a nonsolvent, followed by drying at room temperature. |
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Method of obtaining nanocapsules of antibiotics in konjac gum Invention represents method of preparation encapsulation by method of precipitation with non-solvent, characterised by the fact that antibiotics are used as nanocapsule cores, and as shell used is konjac gum, which is precipitated from suspension in hexane by addition of 1,2-dichloroethane as non-solvent at temperature 25°C. |
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Method of non-invasive express diagnostics of inflammatory process in respiratory organs of calfs Condensate of exhaled air is collected and equilibrium gas phase above it is analysed using the detecting device of "electronic nose" type based on massif of three piezosensor with the base frequency of oscillations 10-15 MHz the electrodes of which are coated with films of acetone solutions of bromocresol blue (BCB), triton X-100 (TX-100) and chloroformic suspension of multilayered carbon nanotubes (MCNT) with the coating mass after solvent removal 4-10 mcg. Registration in the program of "electronic nose" of maximum signals of the massif of pyezosensors during 60 s and calculation of the inflammation parameter (IP) by the formula: I P = Δ F T X − 100 2 + Δ F B C B 2 − Δ F T X − 100 ⋅ Δ F B C B ⋅ 2 Δ F B C B 2 + Δ F M C N T 2 − Δ F B C B ⋅ Δ F M C N T ⋅ 2 , where ΔFBCB - maximum change of frequency of oscillation of the pyezosensor with BCB film, ΔFTX-100 - maximum change of frequency of oscillation of the pyezosensor with TX-100 film, ΔFMCNT - maximum change of frequency of oscillation of the pyezosensor with MCNT film, diagnosing in respiratory organs of calves of inflammatory process at PV value above 1.2±0.1. |
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Invention relates to copper-based nanosized catalyst with particle size 1-50 nm and a method for production thereof, which includes: dissolving, in an aqueous solution, a first component containing initial copper (Cu), a second initial component containing one or more metals selected from a group which includes a transition metal, an alkali-earth metal and a group IIIb metal, and a third initial component containing one or more elements selected from a group which includes alumina, silica, alumina-silica, magnesia, titanium dioxide, zirconium dioxide and carbon, mixing the obtained solution to obtain a mixed salt solution; precipitating the mixed salt solution to precipitate an initial catalyst by adding Na2CO3 until pH 4.0-5.0 is achieved and then adding NaOH until pH 7.0 is achieved; and washing and filtering the precipitated initial catalyst. The invention also relates to a method of producing an alcohol, which includes reacting hydrogen and a carboxylic acid, which contains a simple acid or a mixture of two or more acids, using the disclosed catalyst. |
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Two-dimensionally ordered straight-chain carbon film and method for production thereof Invention can be used in electronics, power engineering and medicine. A two-dimensionally ordered straight-chain carbon film is obtained by sputtering through pulsed plasma evaporation of a graphite cathode. The film growing on a substrate, which is formed by parallel chains of carbon atoms, simultaneously with sputtering, is stimulated with argon ions and further stabilised with hydrogen ions which are fed during condensation of carbon into the arc-discharge plasma. |
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Artificial muscle comprises nylon fibre and/or polyethylene fibre; it represents a medium of at least one polyorganosiloxane, at least one epoxy resin, and at least one epoxy resin polymerisation catalyst. The muscle is bound with one or more filaments of at least one shape-memory intermetallic compound and nylon and/or polyethylene fibre. |
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Bioresorbable polymer cell matrix Invention relates to medicine and represents bioresorbable polymer cell matrix for tissue engineering. Matrix contains frame-carrier for cell cultures and biological agents. Frame is made assemblable from N oriented with respect to each other two-dimensional matrices with N≥1 with possibility of their fixation in pile after inoculation with cells for tissue engineering. Each of two-dimensional matrices is formed by means of lithography in form of polymer film with surface arrays of micro- and/or nanoobjects. Arrays are characterised by individual architecture, consistency and interrelationship of location in architecture of micro- and/or nanoobjects, with possibility of specifying structure of bone tissue which is to be formed, account of its biological functions, with possibility to provide mechanical support, control of processes of cell differentiation and proliferation. |
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Structure of dielectric layer for mis structures having conductivity switching effect Invention is related to the area of micro- and nanoelectronics, and namely to structure of dielectric layer for MIS structures having conductivity switching effect. Peculiarity of the suggested structure consists in formation of 1-5 layers of silicon-based material with thickness of 1-5nm inside the main dielectric film - large-gap semiconductor of oxide and/or silicone nitride or their alloys with carbon or germanium, with built-in nanosize silicon clusters; and the above material differs in chemical composition and less width of forbidden gap from material of the main layer. |
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High-power shf field-effect transistor In high-power SHF FET at semiconductor heterostructure the semiconductor heterostructure is made as sequence of the following basic layers: at least one buffer layer of GaAs with thickness of at least of 200 nm, a group of conducting layers, which form FET channel, represented by channel layer of InyGa1-yAs with thickness of 12-18 nm and at least two δn-layers doped with donor dopant, and two spacer i-layers of AlxGa1-xAs with thickness of 1-3 nm each placed in pairs at both sides of the channel layer, two groups of barrier layers of AlxGa1-xAs, each is made as i-p-i system of barrier layers, one of them is placed at one side of the group of conducting layers while the other gating group is placed at the opposite side, at that barrier layers in each i-p-i system have thickness of (100-200, 4-15, 2-10) nm in the substrate group and (2-10, 4-10, 4-15) nm in the gating group respectively, level of doping with acceptor dopant is (4-20)×1018 cm-2 respectively, barrier layer of i-GaAs with thickness of 5-30 nm, layer of ohmic contact of n+-GaAs with thickness of (10-60) nm of source and drain electrodes, at that gate gating electrode has length less than 0.5 mcm. |
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Semiconductor heterostructure for power SHF FET comprises at monocrystalline semi-insulating substrate of gallium arsenide a sequence of semiconductor layers, each of them having preset functional properties and technical specifications of layer thickness, qualitative and quantitative composition, concentration of dopant concentration. Semiconductor heterostructure is made as direct sequence of the following semiconductor layers: buffer layer of GaAs with thickness of (150-400) nm, donor layer of GaAs with thickness of (2-3) nm doped with silicon of concentration of (6-8)×1018 cm-3, spacer layer of GaAs with thickness of (2-5)nm, channel layer of InyGa1-yAs with thickness of (8-12)nm with content of chemical agents at y equal to (0.21-0.28), spacer layer of AlxGa1-xAs with thickness of (2-5)nm, with content of chemical agents at x equal to (0.20-0.24), donor layer of AlxGa1-xAs with thickness of (3-6) nm doped with silicon of concentration of (5-8)×1018 cm-3, with content of chemical agents at x equal to (0.20-0.24), barrier layer of AlxGa1-xAs with thickness of (10-30) nm, with content of chemical agents at x equal to (0.20-0.24), stop layer of InyGa1-yP with thickness of (2-4) nm with content of chemical agents at y equal to (0.48-0.51), barrier layer of AlxGa1-xAs with thickness of 10-20 nm, with content of chemical agents at x equal to (0.20-0.24), gradient layer of AlxGa1-xAs with thickness of (8-12) nm doped with silicon of concentration of (3-5)×1018 cm-3 with thickness of (8-12) nm doped with silicon of concentration of (3-5)×1018 cm-3, with content of chemical agents at x equal to (0.20-0.24), with linear modification of x up to zero in the layer thickness from side of semi-insulating gallium arsenide, contact layer of GaAs consisting of two parts - the lower, with thickness of (30-50) nm doped with silicon of concentration of (3-5)×1018 cm-3 and the upper, with thickness of (10-20) nm doped with silicon of concentration of (8-10)×1018 cm-3, at that quantitative composition of the above semiconductor layers is expressed in mole fractions. |
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Invention relates to experimental medicine and can be applied in early diagnostics and treatment of tumours, induced in experiment. For early MRT detection of tumours, invasions and metastases combinations of MRT-negative contrast nanopreparationss with positive MRT contrast preparations are introduced to animal. Diagnostics is carried out by contrast magnetic-resonance tomography (CM-RT). Ferrimagnetic-themochemotherapy (FT) of tumours with different localisation is carried out by activated combinations of magnetocontrollable nanomedicines. After-treatment of animas with metastases is carried out with combinations, including dacarbazine, decetaxel and cyclophosphane. |
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High-power shf field-effect transistor In high-power SHF FET at semiconductor heterostructure the semiconductor heterostructure is made as sequence of the following basic layers: at least one buffer layer of GaAs with thickness of at least of 200 nm, a group of conducting layers, which form FET channel, represented by channel layer of InyGa1-yAs with thickness of 12-20 nm and at least two δn-layers doped with donor dopant, and two spacer i-layers of AlxGa1-xAs with thickness of 1-3 nm each, two groups of barrier layers of AlxGa1-xAs, one of them is placed at one side of the group of conducting layers while the other gating group is placed at the opposite side. The substrate group of barrier layers is made as acceptor-donor p-i-δn system of barrier layers; the gating group of barrier layers is made as acceptor-donor δn-i-p system of barrier layers. In each group of barrier layers i-layer is made with thickness of 0.5-10 nm, p-layer is made with doping level complying with height of potential barriers of 0.4-0.8 width of forbidden-gap width of AlxGa1-xAs, δn-layer is made with excessive doping level ensuring difference in surface density for donor and acceptor dopant equal to (1-10)×1012 cm-2. |
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Polymer-based radiation-proof material with high resistance to x-ray and neutron radiation Invention is intended for production of radiation-proof shield elements. Radiation-proof polymer-based material contains superhigh molecular polyethylene with nanoparticles of tungsten and boron carbide. |
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Fluorine-containing multifunctional composition Invention relates to the chemical industry, particularly to process compositions used to coat surfaces of solid material (bodies) and to produce a multifunctional (protective) nanosized film (specifically for modifying surfaces in order to improve properties thereof), and can be used in instrument-making, electronics, machine-building, fuel and energy sector, housing and public utilities and other sectors, for example, metal working. The fluorine-containing composition contains a multi-dispersion solvent (freon or mixture thereof), isopropyl alcohol, ethylene glycol, triethanolamine and a corrosion inhibitor. The composition can further contain water and mineral oil. The fluorine-containing polymer is a fluorine-containing surfactant selected from Epilam perfluoropolyethers. The thickness of the molecular film after application of the Epilam composition ranges from 3.0 nm to 10.0 nm. |
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Thermosetting acrylic adhesive composition (versions) Composition comprises, wt parts: glycidylmethacrylate 52.0-59.0, polyester polyurethane of grade Desmocoll-400 29.0-37.0, diallyl isophthalate prepolymer 1.5-2.5, tret-butylperbenzoate 0.5-0.6, p-methoxyphenol 0.01-0.03, methacrylated silane 2.0-3.0, acrylic acid 1.0-3.0, dioctyl phthalate 3.0-5.0, silicon dioxide with the particle size of 10-500 nm 15.0-18.0 wt parts per 100.0 wt parts of the composition. The composition comprises, wt parts: glycidyl methacrylate 52.0-59.0, polyester polyurethane of grade Desmocoll-400 29.0-37.0, N, N'-(1,3-phenylene)bismaleimides 0.7-2.0 , tret-butylperbenzoate 0.5-0.6, p-methoxyphenol 0.01-0.03, methacrylated silane 2.0-3.0, acrylic acid, 1.0-3.0 dioctyl phthalate 0.3-5.0, silicon dioxide with the particle size of 10-500 nm 15.0-18.0 wt parts per 100.0 wt parts of the composition. |
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Rubber mixture primarily for pneumatic tyres and pneumatic tyre made therefrom Invention relates to production of rubber mixtures and articles from said mixtures, particularly for making pneumatic tyres. The rubber mixture contains rubber and filler. The filler or filler part in the rubber mixture is nanocomponents - nanotubes and/or fullerenes, wherein the amount thereof is in the range of 0.01-3% of the total weight. The vehicle pneumatic tyre is capable of operating in an internal pressure range of 0.01-0.25 kg/cm2. |
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Thermoelectric material contains a semiconductor substrate, a semiconductor oxide film, formed on a semiconductor substrate, and a thermoelectric layer made on the semiconductor oxide film. The semiconductor oxide film comprises the first nanohole formed in it, the thermoelectric layer has configuration providing for the possibility to lay multiple semiconductor nanopoints onto or above the first nanohole to form the structure of laid particles. At least some nanopoints from multiple semiconductor nanopoints have the second nanohole, formed in its surface, and are connected to each other by means of the second nanohole with balanced orientation of their crystals. Thermoelectric material is produced by using the stage of oxidation of the semiconductor substrate to form the semiconductor oxide film on the semiconductor substrate; formation of the first nanohole in the semiconductor oxide film, and epitaxial growth for application of multiple semiconductor nanopoints made from semiconductor material, onto the first nanohole. |
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Composition of mixture for asphalt concrete Composition of mixture for asphalt concrete, which contains crushed stone, sand, bitumen and a carbon additive, contains crushed stone with particle size of 5-15 mm, bitumen BND 90/130, as sand - quartz feldspar sand with fineness modulus 3, as a carbon additive - carbon nanomaterials obtained as a by-product at plasma treatment of coal in a plasma reactor and having bulb-shaped and threadlike carbon structures, with their preliminary distribution in bitumen heated up to 130-140°C in the quantity of 0.03-0.06 wt % of the above mixture and additional mineral powder MP-1 at the following component ratio, wt %: above said crushed stone 42-44, above said sand 48-50, mineral powder MP-1 8-9, above said bitumen 5.4-5.6 (above mineral part). |
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Method of modifying surface of porous silicon Invention relates to chemical modification of the surface of porous silicon and can be used, in particular, to make a biocompatible and fully biodegradable medical drug carrier, which ensures target delivery thereof and prolonged action in the body. A method of modifying the surface of porous silicon includes two-step treatment of the surface of porous silicon. The first step includes treating the surface of porous silicon with a mixture of bromine and an inert organic solvent at room temperature for 10-30 min, washing the surface of porous silicon with the inert organic solvent and drying until complete removal of the inert organic solvent. The second step includes treating the bromated surface of porous silicon with distilled water, as a result of which the surface bonded bromine is substituted with hydroxyl groups, washing the treated surface of porous silicon with distilled water to remove the formed hydrobromic acid and then drying the treated surface of porous silicon. |
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Method for inhibiting pliss lymphosarcoma growth experimentally From the 6th day following Pliss lymphosarcoma transplantation, a ferric nanoparticle suspension concentrated 1 mg/ml in normal saline is administered eight times intraperitoneally or locally into the tumour in male rats. The administration is performed on the 6th, 7th, 9th, 10th, 14th, 15th, 16th and 17th days in a single dose of 1.25 mg/kg of the animal's weight. |
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Nanoporous polymer foam having high porosity Product of a polymeric foam material comprises a matrix of thermoplastic polymer, comprising a plurality of pores in it. The matrix of a thermoplastic polymer comprises particles of nanoscale nucleating agent dispersed in it, which have at least two orthogonal dimensions, the length of which is less than 30 nanometers. |
Another patent 2551224.