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Method of encapsulation aspirin in xanthan gum Aspirin suspension is mixed with benzene and the resulting mixture is dispersed into a suspension of xanthan gum in butanol in the presence of the agent E472s while stirring of 1000 rpm/s, then chloroform is poured, the resulting suspension of nanocapsules is filtered and dried, at that the ratio of shell/core in nanocapsules is 1:5, 3:1 or 1:1. |
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Method of production of nanocapsules of cephalosporin antibiotics in sodium alginate Suspension of sodium alginate and the agent E472s in butanol is added to cephalosporin powder in benzene, after cephalosporin forms the independent solid phase, carbon tetrachloride is added, the resulting suspension of nanocapsules is filtered, at that the ratio of core/shell in the nanocapsules is 1:3. |
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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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Method to produce arrays of aligned carbon nanotubes on substrate surface Invention relates to technologies for production of arrays of carbon nanotubes on the substrate surface. In a reaction chamber they form a working gas flow, containing carrier gas, gaseous hydrocarbon and catalyst precursor for synthesis of carbon nanotubes. The flow of working gas is sent to the surface of the substrate with speed of 100-1000 m/s. Along the working gas flow they send infrared pulse laser radiation with frequency of pulses 5-100 kHz and pulse energy of 0.05-0.5 J for its activation and local heating of the substrate surface to 600-1000°C. The specified reaction chamber is moved above the substrate surface. In a particular case of invention realization they send a flow of inert gas onto the substrate surface, which screens the area of synthesis of carbon nanotubes from air, at its pressure exceeding the pressure of working gas flow. |
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Method of producing ultra-dispersed titanium carbide powder Water solution of titanyl sulphate is neutralized to pH 10-12 by solution of ammonia/sodium hydroxide in the presence of soot to get the powder. The latter is compacted and processed by microwave radiation at the frequency of 2450-3000 MHz and power of 700-1200 W in argon flow at the rate of 7-8 l/h in three steps: at first step - at the rate of 15°C/min to 500°C, at second step - at the rate of 10°C/min to 700°C, and at third step - at the rate of 5°C/min to 1300°C and with holding for 60-70 min. |
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Method for immobilising drug preparations on detonation nanodiamond surface Invention refers to chemical methods for immobilising drug preparations on a detonation nanodiamond surface. The invention represents a method for immobilising the drug preparation on the detonation nanodiamond surface based on producing a suspension of detonation nanodiamonds and drug preparation by dissolving in an organic or aqueous-organic solution, concentrating the produced drug suspension with nanodiamonds and drying, differing by the fact that the drug preparation is Halodif; the produced suspension of Halodif and detonation nanodiamonds is kept at room temperature for at least 24 hours with stirring intensively, and Halodif is immobilised on an oxidised surface of detonation nanodiamonds. |
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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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Magnesium hydroxide fire retardant nanoparticles and method for production thereof Invention relates to chemical engineering. The first step of producing magnesium hydroxide fire retardant nanoparticles includes reacting aqueous magnesium chloride solution with an alkaline component at temperature not higher than 100°C and molar ratio of OH-: Mg++ ions in the range of (1.9-2.1):1. The second step includes hydrothermal recrystallisation of the particles at temperature of 120-220°C, pressure of 0.18-2.3 MPa for 2-24 hours. The reaction mass is subjected to periodic hydraulic shocks with superheated steam at 160-240°C and pressure of 0.6-3.3 MPa. Magnesium hydroxide fire retardant nanoparticles are obtained, having a hexagonal lamellar structure and specific surface area of not more than 20 m2/g. The average diameter of secondary particles is not greater than 2 mcm. The diameter of 10% of the secondary particles is not greater than 0.8 mcm and the diameter o 90% of the secondary particles is not greater than 5 mcm. The longitudinal dimension of the secondary particles ranges from 150 to 900 nm and the thickness ranges from 15 to 150 nm. The nanoparticles can be surface-treated. |
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Laser generator of three-dimensional nanocomposites Invention relates to means of producing materials which enable to compensate for birth defects in humans and animals. The disclosed laser generator of three-dimensional nanocomposites comprises a table on which a vessel is placed for holding a water-protein dispersion of carbon nanotubes, which is optically interfaced with a fibre-optic guide and a pyrometric temperature meter and interfaced with a thermocouple. The fibre-optic guide is optically interfaced with a main and a pilot laser emitter. The disclosed device also includes an additional module which is fitted with a pyrometric temperature meter which is interfaced with a thermocouple, and a fibre-optic guide. |
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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. |
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Elastomeric nanocomposites, nanocomposite compositions and methods for production thereof Invention relates to an elastomeric nanocomposite based on C4-C7-isoolefin, having improved operational characteristics and linking characteristics. The nanocomposite contains a copolymer formed from at least one C4-C7-isoolefin monomer and a multi-olefin monomer, and nanofiller containing smectite clay with a surfactant. The surfactant has the structure (R1R2R3R4)N+, wherein R1 denotes a link formed from benzyl, which may or may not be substituted, wherein R2 is selected from a group which includes C1-C26-alkyls, C2-C26-alkenes and C3-C26-aryls, and wherein R3 and R4 are identical or different and are independently selected from a group which includes C9-C26-alkyls, C9-C26-alkenes and C9-C26-aryls. |
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Method for determining type of matrix of metal-dielectric composites Invention relates to material science, in particular to methods for determining critical concentration of one of the phases in a multiphase system. A method for determining the type of matrix of metal-dielectric composited is based on the fact that, first, electrical resistance of a specimen of a metal-dielectric composite is measured at room temperature to determine the matrix type; after that, the specified specimen is subject to vacuum isothermal annealing at temperatures of 300-400°C during 30 minutes; after that, electrical resistance of annealed material is determined and compared to the initial value. As per increase of the electrical resistance value of the specimen it is defined that concentration of a metal phase of the composite is lower than the value corresponding to a percolation threshold, and the matrix is represented by a dielectric phase with all the corresponding characteristics, and at decrease of the electrical resistance value of the composite material after heat treatment it is determined that the metal phase is continuous medium of the test composite. |
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Plant for processing of nanocomposites in hydrogen plasma Invention relates to treatment of nanocomposites by vacuum and plasma. Proposed plant comprises microwave kiln to accommodate quartz reactor for nanocomposites to be placed therein. Said reactor consists of a hollow cylinder of quartz glass and dielectric flanges with stems arranged at its ends with the help of vacuum sealing for connection with vacuum lines. One of said lines is intended for hydrogen feed and provided with leak while another one is intended for evacuation of microwave kiln and reactor with the help of mechanical pump. One of flanges represents a plug-in design. Every said flange represents a composite design and consists of outer shell, cover, seal and shaped washer of quartz glass with central bore. Outer shell is composed of a hollow two-step cylinder with stem for vacuum hose and has outer thread for attachment of cover thereat. Inner taper surface is intended for fitting of seal in conical gap between reactor body and outer shell. Shaped backing is provided with stem fitting in outer shell stem to interact therewith by its outer surface. Note here that microwave kiln inner chamber is connected with device that creates rarefaction in said chamber. |
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Core-shell nanoparticles, method for synthesis and use thereof Present invention refers to a method for synthesis of core-shell nanoparticles. What is disclosed is a method for synthesis of core-shell nanoparticles involving the following stages: synthesis of a polymer fuse in a solvent by living anionic dispersion polymerisation; the fuse contains monovinyl monomer cross-linked by a cross-linking agent to form nanoparticle core; the core has an average diameter from 5 nanometres to 10,000 nanometres and contains polymer chains with living terminal groups; a stabilising agent is added to stabilise the fuse and to prevent the fuse deposition from the solution; and shell particles are grafted and/or polymerised on the living core ends to form nanoparticle shells; the fuse is formed by polymerising monovinyl monomer with the use of an initiator and cross linking of the produced polymer with a multivinyl agent cross-linking the monomer. There are also described core-shell nanoparticles containing: a core formed of the polymer fuse, which contains monovinyl monomer core particles cross-linked by a cross-linking agent; the agent has an average diameter from 5 nanometres to 10,000 nanometres; the shell containing the shell particles attached to the core; the shell is mainly non-cross-linked; the fuse is synthesised by living anionic dispersion polymerisation; the fuse is formed by polymerisation of the monovinyl monomer with the use of the initiator and cross linking of the produced polymer with the multivinyl agent cross-linking the monomer. What is also described is a method for producing a rubber composition, adding core-shell nanoparticles produced by the above method, into a vulcanised rubber matrix. What is also described is a method for tyre manufacture, involving producing the core-shell nanoparticles; adding the core-shell nanoparticles into the rubber mixture; moulding the rubber mixture in a tyre tread; and a tyre assembly with the use of the tyre tread. |
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Method for differentiation stage-related hepatocarcinoma cells exposure to lithium nanopreparations Invention refers to developing a targeted therapy of the tumour growth. What is disclosed is a method for differentiation stage-related hepatocarcinoma cell exposure to various lithium nanopreparations: nanosized lithium carbonate having a particle size of 10 nm taken as suspension in normal saline and injected intramuscularly to ensure the cytotoxic effect on the tumour cells of the 4th and 5th differentiation stages, and nanosized lithium citrate having a particle size of 10 nm dissolved in normal saline and administered intraperitoneally to provide the cytostatic effect on the tumour cells of the 1st-3rd differentiation stages. The differentiation stages are determined by light microscopy showing a nuclear-cytoplasmic ratio. |
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Nanodiamond- glycine conjugate and method of obtaining thereof Invention relates to the pharmaceutical industry, namely to a nanodiamond-glycine conjugate for delivering glycine into an organism. The nanodiamond-glycine conjugate for delivering glycine into the organism represents glycine-modified nanodiamond particles with the particle size of 2-10 nm, containing to 21±3 wt % of glycine, which is a part of the composition of their up to 1 nm thick surface envelope. The method of obtaining the nanodiamond-glycine conjugate for delivering glycine into the organism consists in annealing nanodiamond particles in a gaseous hydrogen flow with the further liquid-phase chlorination of the obtained particles with molecular chlorine, dissolved in carbon tetrachloride under a photochemical impact of visible light and heating, after which the suspension is centrifuged, washed and dried, the chlorine-modified particles are dissolved in a polar solvent with the formation of a suspension, tertiary amine and glycine are added, the obtained mixture is processed with ultrasound for 5-60 min, the mixture is exposed with heating for 12 to 48 h, centrifuged, washed and dried under specified conditions. |
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Invention relates to medicine and deals with method of creating nanosized diagnostic label based on conjugates of nanoparticles and single domain antibodies, and can be applied for production of new generations of diagnosticums. Method includes preparing surface of nanoparticles by means of polyethyleneglycol derivatives, hexahistidine sequence of amino acids with terminal cysteine residue is introduced into C-terminal part of single domain antibody, nanoparticles conjugate with single domain antibodies with recognising centres in such a way that recognising centres of single domain antibodies are always oriented towards location of analysed molecules. |
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System for delivering biologically active substances into organism and method of obtaining thereof Invention relates to the pharmaceutical industry, namely to a system for delivering biologically active substances into an organism. The system for delivering biologically active substances into the organism represents a nanodiamond with the particle size of 2-10 nm, the surface of which is modified with chlorine with the chlorine content up to 14 atomic%. A method of obtaining the system for delivering biologically active substances into the organism, representing the nanodiamond with the particle size of 2-10 nm, the surface of which is modified with chlorine with the chlorine content to 14 atomic% consists in the fact that annealing of the nanodiamond particles is carried out at a temperature of 500-1200°C in the flow of gaseous hydrogen with the further liquid-phase chlorination of the obtained particles with molecular chlorine, dissolved in carbon tetrachloride under a photochemical impact of visible light and heating, after which the suspension is centrifuged, washed and dried under specified conditions. |
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Complex of biologically active preparations containing glutamic acid, glycine, cysteine, pectin enterosorbent, cod liver oil rich in omega-3 nonesterified fatty acids, as well as a polyvitamin-mineral complex containing such biomicroelements, as molybdenum, manganese, zinc and iron are prescribed for the individuals of the risk group; the individuals of the risk group take the preparations of the complex as a re-treatment once or twice a year for 4 to 6 weeks daily in adequate doses to supply glycine 300 mg, cysteine 600 mg, glutamic acid 4 g, cod liver oil containing 12-15% of omega-3 nonesterified fatty acids 25 ml, pectin 4-5 g a day, as well as microelements and vitamins in adequate doses to cover the normal physiological body needs. |
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Transdermal sedative pharmaceutical gel for treatment of psychoemotional disorders Invention relates to pharmaceutical industry, namely to transdermal gel of sedative action. Transdermal gel of sedative action contains dry extract of leonurus, dry extract of St.-John's wort, dry extract ginkgo biloba, propyleneglycol and purified water, in specified quantities. |
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Method of production of antibiotic nanocapsules in agar-agar Invention describes a method of production of antibiotic nanocapsules by the method of precipitation with nonsolvent, in which into the suspension of 1.5 g of agar-agar, used as a shell of the nanocapsules, in hexane and 0.01 g E472s as a surfactant, 0.5 g of the antibiotic powder is added in small portions, then 5 ml of acetonitrile as the precipitant is added dropwise, then the resulting suspension of nanocapsules is filtered and dried. |
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Method of production of adenine nanocapsules in sodium alginate Core of the nanocapsules is used as adenine and sodium alginate as a shell of the nanocapsules obtained by adding E472s as a surfactant to the sodium alginate in isopropanol, portionwise addition of adenine into the sodium alginate suspension in isopropanol, subsequent dropwise slow addition of the precipitant - diethyl ester after the formation of independent solid phase into the suspension, filtering the suspension of nanocapsules, their washing with diethyl ether and drying. |
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Method of production of nanocapsules of 2,4-dichlorophenoxyacetic acid Core of the nanocapsules are used as 2,4-D, and sodium alginate as a shell of the nanocapsules obtained by successive portionwise addition of 2,4-D into the suspension of sodium alginate in isopropanol in the presence of E472s with stirring at 1300 rev/sec and further pouring the precipitant - diethyl ether, filtering the suspension and drying at ambient temperature to obtain nanocapsules. |
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Method of parts connection of optical element out of garnet crystals Such composite optical elements are widely used in lasers and other optical devices. Method includes polishing of the connected surface of parts, their alignment and heating, at that the connected part surfaces are treated by the solution of orthophosphoric acid in alcohol, and optical contact is provided, then the connected parts at the atmosphere pressure are heated to temperature below melt point of the connected parts. Heating is performed by at least two stages with holding at the first stage for at least three hours at 300°C, and with holding at second stage for at least twenty hours at temperature 1200°C. The developed method excludes expensive operation of the intermediate layer spraying between the connected garnet crystals, and excludes in the finished product this intermediate layer. Besides, the invention ensures manufacturing of the composite optical element with rather uniform contact, minimum losses and strength compared with strength of the material. |
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Agglomerated metal oxyhydroxides and use thereof Invention relates to inorganic chemistry. A product in the form of agglomerated metal oxyhydroxides, wherein the metals were selected from the group comprising Al, Fe, Mg, Ti or mixes thereof. The agglomerates are formed by numerous elements having sizes between 200 and 500 nm, wherein the said elements are low-dimensional folded structures with irregular sides and folds. The structures have high local electric intensity of the said folds, sides and edges, amounting to 106-107 V/m. |
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Fabrication of polymer composite on basis of oriented carbon nanotubes Invention relates to composites based on carbon nanotubes. Proposed process comprises directed orientation of carbon nanotubes, filling annulus with filler and heat treatment at temperature not over polymer destruction temperature. Bulk of carbon nanotubes grown by MOCVD procedure is used in this process. Annulus filling composition does not contain the solvent. Filling with polymer of said bulk of oriented carbon nanotubes is effected in vacuum. |
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Method of multispectral visualisation and device for measurement of critical size of nanostructures In the method according to the invention the reference distributions of intensity are obtained in several spectral intervals at various positions of the sample along the optical axis, the library of reference matrixes is formed; the studied sample is positioned, the sample is lighted with light with wide frequency spectrum corresponding to the visible range of wave lengths, the light scattered by the sample is collected; distributions of intensity of diffused light for several spectral intervals at various positions of the sample along the optical axis are obtained, the matrix of distributions of intensity for the studied sample is formed and the information on the size of critical development is obtained by comparison of the obtained matrix of distributions of intensity with the library of reference matrixes. The device contains the optical radiation source, lighting the optical system, the collecting optical system, the spectral selection unit, the image detector, the sample positioning device and the computing unit. |
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Invention relates to a method of producing butanol, a compound which is industrially very important as a raw material of chemicals and pharmaceutical agents, as a solvent, and as a fuel material. The method comprises: step A, filtering a butanol-containing solution, obtained by microbial fermentation, through a nanofiltration membrane, and collecting butanol-containing solution from the permeate flow of said nanofiltration membrane; step B, filtering the collected butanol-containing solution through a reverse osmosis membrane to increase the butanol concentration for further separation of butanol phase from aqueous phase; step C, separation of butanol from the said butanol phase of step B. |
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Solar cell contains a glass substrate; the first CNT-based conductor layer located directly or indirectly on the glass substrate; the first semiconductor layer in contact with the first CNT-based conductor layer; at least, one absorbing layer located directly or indirectly on the first semiconductor layer; the second semiconductor layer located directly or indirectly on, at least, one absorbing layer; the second CNT-based conductor layer in contact with the second semiconductor layer and the contact to the back surface located directly or indirectly on the second CNT-based conductor layer. |
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Method for forming thz images of cancer and skin pathologies Invention refers to medicine, nanotechnologies, particularly to increasing the probing contrast and depth in forming THz images of cancers and skin pathologies with the use of nanoparticles and laser heating. The method involves introducing plasma-resonant composite nanoparticles into a probed biological tissue and exposing the probed biological tissue to a laser beam at a wave length of 700-900 nm agreed with the peak absorption of the nanoparticles. The probed biological tissue is exposed to a pulse sequence of THz electromagnetic waves, measuring a reflection coefficient of the THz electromagnetic waves with the spatial scanning of the probed biological tissue. The exposure is preceded by local applications of a biologically compatible agent in the liquid form possessing hyperosmotic properties: glycerol, or polyethylene glycol, or propylene glycol, or an alcoholic solution of glucose or fructose. The laser beam exposure is performed in the mode of a femtosecond pulse sequence at a pulse repetition cycle of no more than 10 ns synchronised with the THz electromagnetic wave pulse sequences so as to feed both pulses into the probed region simultaneously. A part of the laser beam for exposing the probed biological tissue can be used to generate the THz electromagnetic wave pulse sequence. |
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Method of production of vitamin nanocapsules in gellan gum Core of nanocapsules is vitamins, and gellan gum is used as a shell of nanocapsules produced by means of serial addition of vitamin into gellan gum suspension in hexane in presence of E472c with mixing at 1300 rotations/second, further addition of 1,2-dichloroethane as a precipitator, filtration and drying at room temperature to produce nanocapsules of vitamins at the ratio of core:shell 1:3. |
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Method to produce nanocapsules of 2-cis-4-trans-abscisic acid Invention describes the method of production of nanocapsules of 2-cis-4-trans-abscisic acid by method of deposition with a non-dissolvent, where 2-cis-4-trans-abscisic acid is added in small portions into a suspension of carrageenan, used as a shell of nanocapsules, in butanol in presence of 0.005 g of preparation E472c and during mixing at 1300 rotations/seconds, then the precipitator is added - butyl chloride, filtered and dried at room temperature. |
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Method to produce albendazole nanocapsules Invention describes the method of production of albendazole nanocapsules by method of deposition with a non-dissolvent, where albendazole is added in small portions into a suspension of carrageenan, used as a shell of nanocapsules, in butanol in presence of 0.01 g of preparation E472c and during mixing at 1000 rotations/seconds, then the precipitator is added - butyl chloride, filtered and dried at room temperature. |
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Prion-free compositions based on nanoparticles and methods of obtaining thereof Group of inventions relate to medicine and deal with pharmaceutical composition for treating cancer, containing nanoparticles, which include albumin, and in fact water-insoluble pharmacologically active anti-cancer agent, prepared from mixture, containing organic phase, which contains in fact water-insoluble pharmacologically acitive anti-cancer agent and albumin solution, subjected to impact of high shear, where prion protein is in fact absent in said composition. Group of inventions also relate to method of obtaining pharmaceutical composition, which contains nanoparticles, including albumin and in fact water-insoluble pharmacologically active agent; method of removing prion protein from pharmaceutical composition, suspected of prion protein presence. |
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In protective gloves for operators, working with source of electromagnetic radiation, which consist of tissue lining, connected with protective and external layers, protective layer is made in form of rings connected to each other and as material of which applied is non-corrosive steel or polymeric materials. External and protective layer are covered with composite material to protect against electromagnetic radiation, which consists of polymeric base, in which particles of compounds - (Fe, Si) or - Co with nanocrystalline structure with volume density (0,6÷1,4)·10-5 1/nm3 are distributed Polymeric base for fixation of position of powder particles with nanocrystalline structure is made in from of alternating between each other structure elements, placed at angle 90° to each other, and each of elements is made in form of particles of elongated shape, located in parallel lines Particles, located on the left and on the right of it, are shifted by value, which does not exceed half of maximal particle size. The following range of values of nanocrystal volume density in amorphous matrix is optimal: higher than 0,6·10-5 1/nm3, not less than 1,4·10-5 1/nm3. External casing is made from X-ray protective material, which contains polymeric binding agent, catalyst, powder-like filler, based on oxides of elements with different absorbing ability in X-ray range of irradiations. As polymeric binding agent applied is low molecular cauotchouc -containing silicon, as catalyst - organometal compound from group of salts of caprylic acid and tin (IV), and filler contains oxides of rare-earth elements with serial numbers of elements 51, 58-71, yttrium oxide, antimony (III) oxide with particle size in range of values 0,5-30 mcm with the following component ratio, wt p: silicon-containing low molecular cauotchouc - 100; catalyst - 6-8; filler - 350-450. Antimony (III) oxide and Σ oxides of REE and yttrium are taken in ratio 1:1. |
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Rubber mixture based on fluororubbers Rubber mixture contains copolymer of vinylidenefluoride and chlorotrifluoroethylene and triple copolymer of vinylidenefluoride, hexafluoropropylene and tetrafluoroethylene with 0.3 wt % of functional group of bromine, magnesium oxide and calcium hydroxide as vulcanisation activator and technical carbon T-900. Mixture also contains zinc oxide as activator of vulcanisation of peroxide vulcanising system, perkadox 14-40B-GR and triallylisocyanurate as vulcanising agent of peroxide vulcanising system, bisphenol AF and benzyltriphenylphosphonium chloride as vulcanising agent of bisphenol vulcanising system, as well as rofamin T and stearic acid as technological additive. |
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Method of synthesising nanocrystalline silicon carbide Method includes the plasmodynamic synthesis of silicon carbide in a hypervelocity jet of an electric discharge plasma, which contains silicon and carbon in a ratio of 3.0:1, generated by a coaxial magnetic-plasma accelerator with graphite electrodes and directed into a closed volume, filled with gaseous argon under normal pressure and a temperature of 20°C, with the temperature of gaseous argon in the closed volume being changed in the range from -20°C to 19°C and from 21°C to 60°C. |
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Product for purifying fluids and method of production Invention can be used in bactericidal treatment of fluids, such as water and industrial liquids. The product for purifying fluids comprises, on hand, a porous body having an external and an internal specific area, and on the other hand a metallised layer with nanometre thickness, which covers at least part of the external and internal surfaces of the porous body. The metallised layer contains at least one metal (Ag), which is bound to the porous body by chemical bonds which arise under the action of intramolecular forces. The metallised layer contains silicon (Si), also bound to the porous body by chemical bonds which arise from the action of intramolecular forces. A method of producing a cleaning product (10) includes treating a porous body, having an external and an internal specific area, in noble gas plasma deposition reactor in radio frequency discharge conditions. Treatment is carried out by immersing the porous body in the plasma and injecting the metal (Ag) and silicon (Si) into the plasma. |
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Titanium diboride producing method Invention relates to powder metallurgy, namely, to the synthesis of titanium diboride, and can be used for the manufacture of ceramic armour, manufacture of heaters of high-temperature electric resistance furnaces, bathtubs and crucibles - metal evaporators, details of metal wires and electromagnetic pumps for pumping of the melted metals, chemical equipment units. The method of producing of titanium diboride consists in heating of the furnace charge from a mix of titanium dioxide, boron containing chemical reagent and carbon material at the temperature of 1500-1700°C within 20-25 minutes. Components of the furnace charge are mixed during common sifting. The carbon material is the high-disperse powder of nano-fibrous carbon with a specific surface density of 138-160 m2/g. |
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Method of synthesis of carbon nanotubes and device for its implementation Invention relates to the field of nanotechnology, and can be used to produce carbon nanostructures. The device for synthesis of carbon nanotubes comprises a chamber 1 filled with inert gas, in which the cylindrical carbonaceous cathode 2 and anode 3 are located, disposed coaxially, made with the ability of their movement relative to each other in the longitudinal direction. The anode 3 is divided into two sections: working 4 which is consumed in the process of synthesis, and discharging 5. The discharging section 5 of the anode 3 is made with a longitudinal cylindrical blind-ended channel 6. Heat removal from the central part of the discharging section 5 of the anode 3 is carried out using a copper cylindrical heat-removing element 7 with the radiator 8 fixed to the free end to the moment of complete evaporation of the working section of the anode 3. The carbon nanotubes are obtained in an arc discharge between the cathode 2 and the anode 3. |
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Composite polymer antifriction polyamide-based material Composite polymer antifriction polyamide-based material contains, wt %: carbon fibre or mixture of carbon fibre with glass fibre - 9.7-42.4, carbon nanotubes in form of monolayered or multilayered with number of layers from 2 to 70 or inserted into each other rolled in tube graphite planes with number of layers from 2 to 70 - 0.05-0.55, polyamide base - the remaining part. Outer diameter of nanotubes is selected from 0.1 to 100 nm, length - from 1 to 70 mcm. Polyamide base contains polyamide or mixture of polyamide with 20-40 wt % of poly-ε-capromide. |
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Bionic extremity and method for manufacturing it Extremity comprises an artificial skeleton representing a bone-shaped pivotally connected items with attached working organs. The latter are presented by artificial muscles and nerves. The muscles comprise shape-memory intermetallic fibres and nylon and/or polyethylene filaments. The nerves comprise an electrically conductive polymer with through porosity; their one end is set into the artificial muscles. What is also presented is a method for manufacturing a bionic extremity. The artificial nerves are produced by mixing a foam enhancer and at least one organic electrically conductive polymer. The produced mixture is heated to a decomposition temperature of the foam enhancer, kept until the process of through pore formation is completed, cooled down and flown through a draw hole. The produced fibre is impregnated with Na+ and K+ ion solution and wrapped with at least one layer of a polymeric dielectric. A cation-exchange membrane is applied on one end. The artificial muscles are produced by lacing a medium consisting of at least one polyorganosiloxane with one or more fibres of at least one shape-memory intermetallic compound, as well as nylon and/or polyethylene filaments. The artificial nerves are then set into the artificial muscles so that motor and/or mixed nerve segments cleared from the polymeric dielectric contact the intermetallic fibres and nylon and/or polyethylene filaments. The sensory and/or mixed nerve ends free from the applied membrane are connected to a piezoelectric array. |
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Method of modifying iron-containing surfaces of friction units Powder-like mixture of dispersive particles of minerals, which contains the following components, wt %: clinochrysotile - 40-45, orthochrysotile - 25-30, braided lizardite - 10-20 and clusters of fullerene - 5-10, is preliminarily prepared. Prepared mixture is supplied into zone of processing iron-containing surfaces of friction units. Dispersity of mixture constitutes 10-50 nm. Mixture consumption constitutes 0.005-0.010 g/cm2. |
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Method of determining spatial distribution of density in nanolayer Intensity of the reflection and transmission through the structure of neutrons and intensity of secondary radiation is measured, caused by the absorption of neutrons in nanolayer. Sequentially in time, three different types of dependences of density of the polarised neutrons are formed from the coordinate depthward of the test layer and from the wave vector of the neutrons, for this three-layer structure is used, located on the substrate, in which the middle layer is under study, the layer following the test one has the potential of interaction of neutrons with the substance exceeding the potential of the test layer, the layer covering the test layer is magnetic with the potential of interaction for the polarised neutrons in the direction of the vector of magnetic induction greater, and for neutrons polarised oppositely - less than the potential of interaction of the test layer. |
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Method of producing polymer nanocomposites Invention relates to a method of producing a polymer nanocomposite and versions of use thereof. The method includes providing a reaction medium comprising a common aliphatic medium and a monomer mixture;polymerising the monomer mixture in the reaction mixture to form a rubber mixture; separating the residual monomers of the monomer mixture from the rubber solution to form a separated rubber solution containing a rubber polymer and the common aliphatic medium; bromating the rubber polymer in the separated rubber solution; reacting the bromated rubber polymer with at least one nitrogen- and/or phosphorus-containing nucleophile and adding filler to the obtained ionomer to form an uncured nanocomposite. |
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Invention relates to obtaining nano-disperse high-melting tantalum carbide, used as filler of composite materials, ceramic thermal barrier coating, chemically stable material, material for high-temperature ceramic matrix composites, and can be used in field of chemical industry, aviation and space equipment. Method of obtaining nano-disperse high-melting tantalum carbide with formation of tantalum carbide microspheres, consisting of agglomerates of nanoparticles, consists in carrying out step-by-step thermal transformation of solution of pentakis-(dimethylamide)tantalum in tetradecane in inert atmosphere in interval of temperatures 25-250°C, realised by heating reaction mass to 160°C for an hour and from 160°C to 250°C for three hours, with obtaining tantalum-nitrogen-carbon-containing pre-ceramic polymer and its further thermal processing by heating to temperature 1100°C at rate 10°C/min with exposure in inert atmosphere for 3 hours. |
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Solar power plant includes, at least, one collector, the heat accumulator for short-term storage of thermal energy, the steam generator, the steam turbine, the capacitor, and the heat accumulator for short-term storage of thermal energy is filled with high-temperature liquid, also the plant includes the first closed circulating loop with the high-temperature heat carrier where the collector and the heat accumulator of short-term storage of thermal energy are series connected, and the first loop contains the heat exchanger located in the heat accumulator for short-term storage of the thermal energy; the second closed circulating loop with high-temperature liquid, where the heat accumulator for short-term storage of thermal energy and the steam generator are series connected, and the second loop contains two heat exchangers located, respectively, in the heat accumulator for short-term storage of thermal energy and in the steam generator filled with high-temperature liquid, the third closed circulating loop with the low-boiling working substance. |
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Catalyst contains carrier from porous zeolite and binding agent and catalytically active substance - platinum. Carrier additionally contain gallium oxide nanopowder with gibbsite powder with particle size not more than 40 mcm being used as binding agent and zeolite KL with particle size not more than 0.10 mm being used as zeolite. ratio of ingredients is within the following range, wt %: platinum - 0.3-0.8, gibbsite - 16-60, zeolite KL - 39.12-83.68, gallium oxide - 0.02-0.08. Claimed catalyst possesses higher activity and selectivity with respect to formation of aromatic hydrocarbons. |
Another patent 2551277.