anufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units (B82B3)

B82   Nano-technology(3328)
B82B3                 anufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units(1822)

ethod of fire extinguishing with nanopowder using powder fire extinguisher and powder fire extinguisher // 2607761
FIELD: fire safety.SUBSTANCE: invention refers to extinguishing powders made in the form of a nanopowder. Core of the proposed device is that in a powder fire extinguisher comprising a housing filled with a fire-extinguishing powder, a device for its discharge and supply to the body of fire, a stop-start device and a powder sprayer in the controlled zone, the fire-extinguishing powder is made in the form of a nanopowder. Powder fire extinguisher contains a housing filled with a fire-extinguishing powder, a device for its discharge and supply to the body of fire, a stop-start device and a powder sprayer in the controlled zone, the fire-extinguishing powder is made in the form of a nanopowder.EFFECT: proposed technical solution is easy in operation and can be used in a normal powder fire extinguisher to supply the nanopowder in case of fire to the controlled zone.2 cl, 1 dwg
ethod of producing cation-substituted tricalcium phosphate // 2607743
FIELD: chemistry.SUBSTANCE: invention relates to chemical and medical industries and can be used in production of initial biocompatible material, suitable for making dense and porous ceramics, applicable as scaffolds in engineering of bone tissue, targets for creation of coatings on metallic implants in surgery and dentistry and in other fields of medicine. Method of producing cation-substituted tricalcium phosphate is described by deposition of average calcium phosphates, formed during pouring off and constant mixing of aqueous solutions of calcium nitrate and disubstituted ammonium phosphate, taken in molar ratio of 3:2, at pH 7.0 with subsequent filtering of formed precipitate and its thermal treatment at temperatures of 700–1,300 °C. Wherein calculated amount of solutions of salts of nitrates or acetates, or chlorides of following elements is added to reaction mixture: iron, zinc, copper, sodium, potassium, strontium, barium bismuth, silicon at following ratio of reagents, mol%: calcium nitrate – 40–59.9, disubstituted ammonium phosphate – 40; salt – 0.1–20.EFFECT: powders formed after thermal treatment are characterized by homogeneous phase composition, corresponding to whitlokite structure, finely dispersed state with particle size of 20 nm to 2 mcm and antimicrobial activity.1 cl, 1 tbl, 4 ex

ethod of producing nanocapsules of adenine in carrageenan // 2607654
FIELD: nanotechnology.SUBSTANCE: invention relates to a method of producing nanocapsules of adenine. Specified method is characterized by that carrageenan in benzene is added with glycerol ester with one or two molecules of edible fatty acids and one or two molecules of citric acid as a surfactant, the produced mixture is stirred, added with adenine powder, after formation of an independent solid phase is slowly added with petroleum ether, the produced suspension of nanocapsules is filtered, washed with petroleum ether and dried, herewith the ratio of nucleus/shell in the nanocapsules makes 1:3, 1:1 or 5:1.EFFECT: invention provides faster and easier process of nanoencapsulation of adenine, as well as higher mass output.1 cl, 1 dwg, 4 ex
Biocompatible nanomaterial for photosensitivity singlet oxygen and method for production thereof // 2607579
FIELD: medicine.SUBSTANCE: group of inventions refers to medicine, in particular to oncology, and describes a biocompatible nanomaterial and method of its production. Proposed biocompatible nanomaterial is a hybrid associates of colloidal quantum dots CdS with average size of 2–4 nm with cations of methylene blue (MB+) in concentration 10-1–10-4 (νpaints/νCdS). Method involves double jet merging of 0.6–5 % solution of sodium sulphide and 0.8–7 % solution of cadmium bromide with melt of gelatin with producing of colloidal solution, containing colloidal quantum dots of CdS, solution is held at temperature of 4–10 °C, produced gelatine jelly is crushed to grain with size 5–10 mm, washed in distilled water at temperature from 7 to 13 °C for 30 minutes, decant excess water and granules are heated to temperature above 40°C. Nanomaterial is highly efficient generation of singlet oxygen and satisfactory parameters of cytotoxicity, testifies to its biocompatibility.EFFECT: invention can be used in medicine and biology for photodynamic therapy of oncological and other human diseases.2 cl, 6 dwg

Heat-resistant polymer composite material based on siloxane rubber and method for production thereof // 2607412
FIELD: chemistry.SUBSTANCE: invention relates to heat-resistant composite materials, which can be used in various industries, in particular in aircraft and space equipment, and to a method for preparing them. Described is a heat-resistant polymer composite material, containing siloxane rubber as a matrix and multi-wall carbon nanotubes (CNT) as filler in amount of 0.1–1.0 wt% per 100 g of pts.wt matrix, wherein material has heat resistance: weight change at 400 °C not more than 3.93 %, and physical-mechanical properties: modulus of elasticity in tension 0.93–3.63 MPa at relative elongation of 330–505 %. Also described is a method of producing polymer composite material.EFFECT: technical result is producing a novel polymer composite material with high heat resistance and improved mechanical properties based on siloxane rubber as a matrix and carbon nanotubes as filler.6 cl, 9 dwg, 1 tbl, 8 ex
ethod for synthesis of semiconductor nanoparticles // 2607405
FIELD: chemistry.SUBSTANCE: invention relates to colloidal chemistry and nanotechnology. Method comprises synthesis of nanocrystals of precursors containing chalcogen and a group II or IV metal, in presence of a solvent at room temperature using a "double drop method", for which said precursors are introduced simultaneously in droplets while stirring. Solvent used is an ionic liquid or a mixture of ionic liquids combined with one or more low-boiling organic solvents. Reaction mixture containing a nucleus of semiconductor quantum dots is exposed to UV light and treated with ultrasound. Nanoparticles of group II or IV metal chalcogenides are obtained with dispersion medium size of not more than 10 %, having high photostability and aggregative stability, capable of being dispersed in both polar and nonpolar solvents without additional treatment steps. Toxic solvents are not used during synthesis.EFFECT: invention can be used in production of luminescent materials, superminiature light-emitting diodes, white light sources, including transistors, nonlinear optical devices, photosensitive and photovoltaic devices.1 cl, 8 dwg, 11 ex
ethod of producing endohedral nanostructures based on implanted ions channeling // 2607403
FIELD: nanotechnology.SUBSTANCE: method of producing endohedral nanostructures involves introduction of accelerated ions, for example metal ions, in polyhedral nanostructures, for example, fullerene molecules. Relative position of polyhedral nanostructure and oncoming implanted ion is fixed with nanochannels of track membrane, which is implanting, in which collision takes place. Nanochannels have doubly conical shape with internal narrowing to impede transition of molecules of polyhedral nanostructure from one side of membrane to the other, focusing of moving ion to center of nanochannel and releasing of polyhedral nanostructural molecule from it after ion implantation. Part doubly conical shape nanochannel and track membrane surface between nanochannels are made conducting from the side of supply of molecules of polyhedral nanostructures to provide accelerating and focusing potential, applied to molecules of polyhedral nanostructure in nanochannel. Second track membrane is used to form ion flow structure, which is membrane of ion source, made in single process with the first one, and repeating structure of nanochannels’ location on first implanting membrane. Controlled DC voltage is supplied between above track membranes. Volumes of reactor with flows of transmitted polyhedral nanostructures, ions, as well as obtained endohedral nanostructures, are separated with implanting membrane and kept in these temperatures providing supply and required aggregate state of materials, involved in process of implantation, as well as removal of products from implantation area. When producing endohedral structures in solution, polar solvent is used, in which molecules of polyhedral nanostructures obtain negative charge, and implanted ions obtain positive charge.EFFECT: output of endohedral nanostructures is increased.1 cl, 4 dwg

ethod of producing nanocapsules of adaptogens in carrageenan // 2607386
FIELD: nanotechnology.SUBSTANCE: invention relates to a method of producing nanocapsules of adaptogen. Specified method is characterized by that eleutherococcus or ginseng extract is added to the suspension of carrageenan in isopropanol in presence of glycerol ester with one or two molecules of edible fatty acids and one or two molecules of citric acid, then hexane is added, the produced suspension of nanocapsules is filtered and dried, herewith the ratio of nucleus/shell in the nanocapsules makes 1:3 or 5:1.EFFECT: invention provides faster and easier process of nanoencapsulation, increasing mass output.1 cl, 2 dwg, 5 ex

ethod of producing nanocapsules of dry spinach extract // 2606854
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, namely to method of producing nanocapsules of dry spinach extract in sodium carboxymethyl cellulose. Method involves dispersion of dry spinach extract in solution of sodium carboxymethyl cellulose in benzene in ratio 1:1–3 in presence of E472c as surfactant, while stirring at rate of 1,000 rpm. Then precipitator (diethyl ether) is added and obtained suspension is filtered. Nanocapsules are washed with diethyl ether and ready product is dried at room temperature. Method provides simplifying and accelerating process of nanocapsules production, reduces losses, when producing nanocapsules.EFFECT: invention can be used, in particular, in cosmetic and food industries.1 cl, 2 dwg, 3 ex
ethod of producing nanostructured composite conductive coating // 2606842
FIELD: medical equipment.SUBSTANCE: invention relates to biomedical equipment. Method of producing nanostructured composite conductive coating is described, involving application of ultradispersed suspension of carboxymethyl cellulose and carbon nanotubes on substrate, then suspension is exposed to laser till complete drying in continuous mode at wave length of 0.81–1.06 mcm, radiation intensity is 1.0–2 W/cm2, exposure time is 10–100 s, and dried material is subjected to thermal treatment by annealing in air at temperature of 40–150 °C for 30 minutes.EFFECT: higher specific conductivity of coating by more than 50 times during combined performance of laser radiation and thermal treatment is achieved.1 cl, 1 tbl, 1 ex

ethod of producing auxin nanocapsules // 2606590
FIELD: nanotechnology.SUBSTANCE: invention relates to a method of producing nanocapsules. Described is a method of producing nanocapsules of auxins. Shell of nanocapsules used is agar-agar. Said method is characterized by that auxin is added to a suspension of agar-agar in butanol in presence of glycerol ester with one or two molecules of edible fatty acids and one or two molecules of citric acid as surfactant while mixing at 1,300 rpm. Then a hexane is added and obtained suspension of nanocapsules is filtered and dried at room temperature. Said auxin is selected from indolyl acetic acid, indolyl-3-butyric acid or 1-naphthyl acetic acid. Weight ratio of nucleus/shell nanocapsules is 1:1 or 5:1.EFFECT: invention provides simpler and faster process of producing nanocapsules, reduces losses during production thereof (increased mass output).1 cl, 2 dwg, 7 ex

ethod of producing tannin nanocapsules // 2606589
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing nanocapsules of tannin. Said method is characterized by that 1 g of tannin is added to a suspension of 1 g low-esterified apple pectin in petroleum ether in presence of 0.01 g glycerol ester with one or two molecules of edible fatty acids and one or two molecules of citric acid while mixing at 1,000 rpm, then 6 ml of ethyl acetate is added, produced suspension of nanocapsules is filtered and dried at room temperature.EFFECT: invention provides faster and easier process of nanoencapsulation of tannin, as well as higher weight yield.1 cl, 2 dwg, 6 ex
Protective coating based on polymer composite radio material // 2606350
FIELD: technological processes.SUBSTANCE: invention relates to radar absorbent materials and coatings. Described is a protective coating based on polymer composite radio material containing filler and epoxy resin as polymer binder, in which filler used is multi-wall carbon nanotubes (MCNT) in following concentration, %: multi-wall carbon nanotubes – 2–8, epoxy resin – balance up to 100.EFFECT: obtaining a protective coating, which widens region of protection against microwave radiation.4 cl, 6 dwg, 4 tbl, 1 ex

ethod of producing nanocapsules of rosuvastatin in konjac gum // 2605847
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing nanocapsules of rosuvastatin, characterised by that rosuvastatin is slowly added to a suspension of konjac gum in hexane, in presence of 0.005 g of E472c preparation while stirring at 1,000 rpm, at a weight ratio shell:core of 3:1 or 1:5, then benzene is added, obtained suspension is filtered and dried at room temperature.EFFECT: invention provides a simpler and faster process of producing nanocapsules, reducing accompanying loss at nanocapsules production (higher weight yield).1 cl, 1 dwg, 3 ex

ethod of producing nanocapsules of rosuvastatin in sodium alginate // 2605846
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing nanocapsules of rosuvastatin, characterised by that rosuvastatin is slowly added to a sodium alginate suspension in hexane, in presence of 0.005 g of E472c preparation while stirring at 1,000 rpm, at a weight ratio shell:core of 3:1 or 1:5, then adding petroleum ether as a precipitant, obtained suspension is filtered and dried at room temperature.EFFECT: invention simplifies and speeds up process of producing nanocapsules, reduces loss during production (higher weight yield).1 cl, 3 ex, 1 dwg

Polymer-based material for combined radio- and radiation protection // 2605696
FIELD: physics.SUBSTANCE: invention relates to protection from ionising and microwave radiation. Radio- and radiation protective polymer-based material contains ultrahigh molecular weight polyethylene with nanoparticles of tungsten, boron carbide and technical carbon in following ratio of components (wt%): ultrahigh molecular weight polyethylene - 40-60, tungsten - 18-20, boron carbide - 15-20, technical carbon UM-76 - 5-20.EFFECT: invention makes it possible to combine properties, which enable to obtain neutron absorbing material, x-ray and microwave radiation.1 cl, 1 dwg, 3 tbl

ethod of producing nanocapsules of dry girasol extract // 2605614
FIELD: manufacturing technology.SUBSTANCE: invention relates to a method of producing nanocapsules of dry girasol extract in sodium carboxymethyl cellulose. Said method is characterized by that a suspension of sodium carboxymethyl cellulose in benzene is added with preparation E472c as a surfactant, the produced mixture is stirred, added with dry girasol extract, then acetonitrile is added; the prepared suspension of nanocapsules is filtered, washed with acetonitrile and dried, herewith the weight ratio of girasol extract:sodium carboxymethyl cellulose in the nanocapsules makes 1:3, 1:1, 1:5 or 5:1.EFFECT: invention provides simplifying and accelerating the process of girasol nanoencapsulation, as well as higher weight yield.1 cl, 1 dwg, 5 ex

ethod of producing nanocapsules of medicinal plants with sedative action in agar-agar // 2605613
FIELD: pharmaceutics.SUBSTANCE: invention relates to method of producing nanocapsules of medicinal plants with sedative effect. Above method is characterized by that 5 ml of motherwort or valerian infusion or 10 ml of anomala rootstock infusion are added to agar-agar suspension in benzene, containing 1 or 3 g of said polymer in presence of 0.01 g of preparation E472c as surfactant while mixing at 1,300 rpm, 10 ml of butyl chloride are then added, obtained suspension of nanocapsules is filtered and dried at room temperature.EFFECT: invention simplifies and speeds up process of producing nanocapsules and increases mass output.1 cl, 2 dwg, 7 ex

ethod of producing nanocapsules with group b vitamins // 2605596
FIELD: pharmaceutics.SUBSTANCE: invention relates to method of producing nanocapsules of vitamins B in sodium alginate. Said method is characterized by fact, that sodium alginate used is as shell, and core is group B vitamins, at weight ratio of nucleus:shell of 1:3 or 1:1, wherein vitamin is added in sodium alginate suspension in petroleum ether in presence of preparation E472c as surfactant while mixing at 1,300 rpm, then ethyl acetate is added, obtained suspension is filtered and dried at room temperature.EFFECT: invention provides simplification and acceleration of process of producing vitamin nanocapsules, as well as higher weight yield.1 cl, 2 dwg, 11 ex

ethod of producing nanocapsules of medicinal plants with antispasmodic effect // 2605594
FIELD: medicine.SUBSTANCE: invention relates to method of producing nanocapsules of medicinal plants with antispasmodic action. Said method is characterized by fact, that mint tincture is added to suspension of sodium carboxymethyl cellulose in methyl ethyl ketone in presence of 0.01 g of preparation E472c as surfactant while mixing at 1,300 rpm, obtained suspension is filtered and dried at room temperature, wherein weight ratio of nucleus:shell is 1:3, or 1:1 or 3:1 or 1:5, or 5:1.EFFECT: invention provides simplification and acceleration of process of nanoencapsulation of mint tincture and higher weight yield.1 cl, 2 dwg, 6 ex

ethod of metal surface super hydrophobic properties making // 2605401
FIELD: technological processes; metallurgy.SUBSTANCE: invention relates to method of metal surface super hydrophobic properties making. Said surface is exposed to focused beam of pulsed laser radiation with pulse duration in nanosecond range, said beam is displaced relative to said surface at predetermined law. Selected said laser radiation characteristics and said relative displacement parameters so, that to form multimodal roughness on said surface with dimensions of simultaneously in nanometer and micrometer ranges. Modifying said surface with low surface energy substance, water repellent.EFFECT: technical result consists in high efficiency of surface texturing and enabling formation of multimodal roughness super-hydrophobic state with characteristic dimensions simultaneously in nanometer (nanometers and/or tens of nanometers) and micrometer (tens and/or hundreds of micrometers) ranges.1 cl, 2 dwg, 3 ex

ethod of producing granular nanocrystalline hydroxylapatite // 2605296
FIELD: pharmaceutics.SUBSTANCE: invention relates to pharmaceutical industry, namely to method of producing granular nanocrystalline hydroxylapatite (GAP). Method of producing granular nanocrystalline hydroxylapatite involves synthesis of hydroxyapatite in saturated solution of calcium hydroxide, decanted after daily settling from settled aggregates of Ca(OH)2, by adding alkali solution of orthophosphoric acid, while stirring constantly, until pH reaction of mixture is above 10, then it is settled, liquid phase is decanted and frozen, obtained colloid solution of high-purity nanohydroxyapatite is freezed in liquophilic chamber, which is preliminary cooled; that is followed by freeze-drying in vacuum at temperature of -5 °C and ready granules are separated into fractions.EFFECT: described method enables easy and reliable production of granules of nanocrystalline high-purity GAP in range of ½ to 2 mm.1 cl, 1 dwg, 2 tbl, 6 ex

ethod of producing nanocapsules of medicinal plants having sedative action in carrageenan // 2605273
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, namely to method of producing nanocapsules, and describes a method of producing nanocapsules of medicinal plants, with sedative effect. Method is characterised by that 5 ml of the infusion of valerian, motherwort or 10 ml anomalous peony added to the suspension of carrageenan in petroleum ether in the presence of 0.01 g E472c as surfactant at mixing 1,300 rot/min, the weight ratio nucleus: shell in terms of dry substance makes 1:1, or 1:3, obtained suspension is filtered and is dried at room temperature.EFFECT: method provides simplifying and accelerating the process of nanoencapsulation, while reducing accompanying loss.1 cl, 2 dwg, 6 ex

Closed hip endoprosthesis // 2605149
FIELD: medicine.SUBSTANCE: invention relates to medicine. Closed hip endoprosthesis comprises wedge-shaped leg with cone, spherical head, cup in form of a hemisphere with insert with spherical cavity for spherical head, open outside, conical elastic thin-wall corrugated shell, placed between insert and leg. Shell cavity is filled with liquid bioinert substance. Insert butt is equipped with external annular projection. One of shell ends of larger diameter is reinforced with ring forming angular contact slide bearing together with butt and insert ring-shaped projection, and other end of smaller diameter is reinforced with ring with inner conical hole, forming fixed tight joint with leg cone. On cylindrical contacting surfaces of projection and insert and reinforcing shell ring circular grooves are made, in which split elastic locking ring of round section is placed. Liquid bioinert substance contains carbon nanoparticles to decrease friction of movable surfaces of head, reinforcing ring and insert.EFFECT: invention provides increased service life of endoprosthesis, improved quality of patient's life due to increase of time before endoprosthesis exploring replacement surgery.1 cl, 3 dwg

Composite nanocrystalline catalyst for propane cracking to obtain olefins and method for its production // 2604884
FIELD: petroleum chemistry.SUBSTANCE: invention relates to petrochemistry. Composite nanocrystalline catalyst for propane cracking to obtain olefins contains nanocrystalline aluminium oxide, modified with titanium oxide or silicon oxide with mass fraction of latter from 0.35 to 5 %. Method of producing composite nanocrystalline catalyst involves obtaining nanofibrous aerogel of aluminium oxide by oxidation of aluminium plate by humid air at room temperature and impregnation of produced carrier with solutions of titanium isopropoxide (IV) or triethoxychlorosilane at increasing temperature from 373 K to 473 K, with further crystallization in stream of hydrogen at increasing temperature from 600 K to 1,200 K or in hydrogen atmosphere at temperature of 1,200 K.EFFECT: use of catalyst provides high yield of olefins.2 cl, 2 tbl

Nanocrystalline catalyst for cracking propane in order to obtain olefins and method for production thereof // 2604882
FIELD: petroleum chemistry.SUBSTANCE: invention relates to petrochemistry. Nanocrystalline catalyst for cracking propane in order to obtain olefins is a nanocrystalline form of aerogel of aluminium oxide. Method of producing nanocrystalline catalyst for cracking propane in order to obtain olefins involves amalgam oxidation with further crystallisation of nanofibrous aluminium oxide in a stream of hydrogen at temperature starting from 600 K and each hour of raising temperature by 50° and reaching temperature of 1,200 K, which is maintained for 10 hours or in a hydrogen atmosphere for 5 hours.EFFECT: use of catalyst provides high yield of olefins.2 cl, 2 tbl

Diamond-carbon substance and preparation method thereof // 2604846
FIELD: chemistry.SUBSTANCE: invention relates to production of highly active diamond-carbon materials, which can be used in super-finish polishing, electroplating and medicine. First, initial diamond-carbon substance in form of a suspension or powder is treated with a mixture of aqueous solutions of nitric acid with concentration of 30-40 wt% and hydrofluoric acid with concentration of 20-30 wt% for 72-74%, at room temperature, and then with aqueous hydrochloric acid with concentration of 15-20 wt% for 2.5-3 h, at boiling point of reaction mixture. Method then includes washing off acid.EFFECT: obtaining a diamond-carbon substance in form of spherical particles, containing carbon, hydrogen, nitrogen, oxygen and 0,01 -0,2 wt% of incombustible impurities, having exchange capacity of 0,19 -0,65 mmol/g and high colloidal stability in liquid media.3 cl, 1 dwg, 3 ex

Device for field-emission homogeneity degree determination from emission medium surface // 2604727
FIELD: electronics.SUBSTANCE: invention relates to electronic equipment and intended for use in research and development of field-emission media creating structural-technological methods, including media, which field emission process is activated by electromagnetic radiation of optical or radio-frequency ranges. In particular, said device is necessary for research and development of technologies and structures of high-voltage and high-current field radiating cathodes, for studying of degradation processes flowing therein. This is achieved by combining of optical and field-emission units within single vacuum-tight design, which joint operation is based on integration of such number of physical processes, as electrons field emission, electrons photoelectric emission driven by electric field, and cathode luminescence.EFFECT: technical result is possibility to study field emission processes statics and dynamics in “on-line” mode, emission homogeneity degree determination from field-emission media surface with resolution of not less than 50-100 mqm, study of degradation processes dynamic and static, correlation relationships between degradation of electrical characteristics and morphological changes of field radiating cathodes surface.1 cl, 4 dwg

ethod of formation of nanostructured biologically inert coating on titanium implants // 2604085
FIELD: medicine.SUBSTANCE: invention relates to medical equipment, namely technology of making bioinert nanostructured oxide coating on intraosseous parts of titanium implants. Method includes air-abrasive treatment, etching in solution of acids and gas-thermal oxidation. Air-abrasive treatment is carried out with alumina powder with particle size of 100-200 mcm at pressure of air medium 0.2-0.3 MPa. Etching of implant is performed in water solution of HF (5-8 wt%) + HNO3 (15-19 wt%) for 0.1-0.2 minutes. Gas-thermal oxidation is performed by induction of heating in air atmosphere to temperature of 800-900 °C at current frequency on inductor of 90±10 kHz and specific consumption of electric power 0.2-0.4 W/kg. Then implant is held for 0.5-2 minutes and cooled in air.EFFECT: formation of oxide coating on titanium implant surface with thickness of 3-10 mcm is provided, which consists of oxide crystals with size of up to 70±10 nm, with help of high-efficiency and resource-saving method.3 cl, 3 dwg, 2 ex

ethod of producing colloidal dispersions of graphene // 2603834
FIELD: chemistry.SUBSTANCE: invention can be used in production of nano-modified composite materials for machine building, construction, power engineering, electronics and medicine. Method includes splitting graphite material by heating to 50÷400 °C intercalated compounds with weight ratio of graphite to iodine heptafluoride from 1:0.77 to 1:5.02 respectively. Method then includes ultrasonic dispersion of split graphite in disperse medium - polyaminocarboxylic acids or salts thereof in weight ratio from 0.000001:1 to 0.01:1 respectively.EFFECT: method of producing colloidal suspensions of graphene is simple and safe.5 cl, 7 dwg, 8 ex

Formation of conjugated protein by electrospinning // 2603794
FIELD: technological processes.SUBSTANCE: invention relates to a method of producing fibre from polysaccharide-conjugated milk whey protein by electro-spinning, which includes steps of preparing an aqueous solution, containing polysaccharide and milk whey protein, wherein said polysaccharide is present in concentration of 0.1 g/ml to about 5.0 g/ml, application to solution of voltage from 15 to 25 kV, collection of fibre on a composite plate.EFFECT: disclosed is a method of producing polysaccharide-conjugated milk whey protein by electro-spinning.23 cl, 29 dwg, 9 tbl

Silver sulphide nanoparticles in organic ligand shell and method of production thereof // 2603666
FIELD: medicine.SUBSTANCE: invention can be used in medicine, photonics, heterogeneous catalysis. Silver sulphide nanoparticles have ligand shell, consisting of citrate groups. Shell thickness varies from 1 to 10 nm. Method of producing said silver nanoparticles involves obtaining initial solution of silver nitrate and sodium sulphide in ratio (0.5-3.5):(0.9-1.1). 0.01-10 % solution of sodium citrate is added to initial solution in amount of 1-50 % of total volume. Then it is held during from 0.1 to 50 hours at 20-35 °C.EFFECT: invention enables to obtain in one stage semiconductor isolated silver sulphide nanoparticles of nucleus-shell type, using only safe and ecologically pure substances.2 cl, 3 dwg, 6 ex

ethod of producing crystalline nanopowders of metal oxides using cryotreatment of aqueous-organic sols // 2603658
FIELD: metallurgy.SUBSTANCE: invention relates to a method of producing crystalline nanopowders of metals with the size of crystallites of less than ≤ 10 nm and can be used in chemical industry, for production of intermediate products for fine ceramic materials. Synthesis is carried out in a water-organic medium using as sources of metal nitrates, chlorides or acetates. For formation and stabilization of sol used are acetylacetone-alcoholic solutions of N,N-dimethyloctylamine, hexamethylene tetramine or monoethanolamine. As a complexing agent used is acetylacetone. Obtained sol through a jet nozzle is dispersed into liquid nitrogen, where at the cooling rate > 30° cryogranulating takes place. Produced granules are subjected to vacuum-sublimation drying to form a cryo-airgel, which is then annealed at 500 °C in air for 3 hours.EFFECT: proposed method provides technologically effective and environmentally acceptable method of producing nanocrystalline of metal oxides.4 cl, 8 dwg, 1 tbl, 6 ex

ethod for identification and semi-quantitative determination of dioctylphthalate in mixture of compounds, released from pvc plastisol // 2603475
FIELD: chemistry.SUBSTANCE: invention relates to analytical chemistry and can be used to determine dioctylphthalate in equilibrium gas phase over items made from PVC plastisol. To this end, invention uses a method of identifying and semi-quantitative determination of dioctylphthalate in a mixture of compounds, released from PVC plastisol. To determine dioctylphthalate, method uses a frequency meter with an array of 2 piezoelectric crystal resonators with natural oscillation frequency of 10 MHz, electrodes of which are modified by applying individual solutions of multilayer carbon nanotubes (MCNT) with weight of film of 3-5 mcg and polyphenyl ether (PPE) weighing 15-20 mcg. Modified piezoelectric crystal resonators are placed in a closed detection cell and held for 5 minutes to establish a stable zero signal. Then sample of a soft article made from PVC plastisol weighing 1.00 g is placed in a sampler, which is tightly closed with a plug and maintained at a temperature of 20±1 °C for 15 minutes for saturation gas phase with dioctylphthalate vapour. 5 cm3 of equilibrium gas phase is extracted using a syringe and injected into closed detection cell and for 120 s change in oscillation frequency of piezo sensors is recorded. Every second feedback of sensors is detected, followed by regenerating system for 2 minutes with dried air. Sample in sampler is then heated in a drying chamber to 30±1 °C for 10 minutes, followed by collecting with a syringe 5 cm3 of equilibrium gas phase and repeatedly injected into closed detection cell, measuring for 120 s change in oscillation frequency of piezo sensors at 20 and 30 °C. Signals of sensors are used to automatically calculate area under curve for each sensor: S(MCNT), S(PPE), Hz·s, and ratio of areas is calculated at 20 °C and 30 °C respectively - parameter Specified parameters are used to make conclusion on presence of dioctylphthalate in samples: if A30/20>20, then dioctyl phthalate is present in samples of PVC-plastisol with concentration higher than allowable amount of migration (DCM, mg/dm3), If A30/20≤1, content of dioctylphthalate at level of allowable amount of migration and its content is less than content of other volatile compounds present in sample.EFFECT: invention provides identification and semi-quantitative determination of dioctylphthalate, released from PVC plastisol.1 cl, 1 ex

ethod of producing kinetin nanocapsules // 2603460
FIELD: nanotechnology.SUBSTANCE: invention relates to method of producing kinetin nanocapsules. Said method is characterized by fact, that glycerol ester with one or two molecules of edible fatty acids and one or two molecules of citric acid is added to carrageenan in petroleum ether, mixture is stirred, kinetin powder is added, after formation of independent solid phase benzene is added slowly drop-by-drop, obtained suspension of nanocapsules is filtered, washed with benzene and dried, wherein weight ratio of nucleus/shell of nanocapsules makes 1:3, or 1:1, or 5:1.EFFECT: invention provides simplifying and accelerating of kinetin nanoencapsulation process and higher weight yield.1 cl, 1 dwg, 4 ex

ethod of producing nanocapsules of quercetin and dihydroquercetin // 2603458
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, namely to method of producing nanocapsules, and describes method of producing adaptogen nanocapsules. Method is characterized by fact, that quercetin or dihydroquercetin is added to suspension of xanthan gum in hexane in presence of 0.01 g of E472c surfactant, weight ratio nucleus:shell in terms of dry substance makes 1:1 or 1:3, then acetonitrile is added, while mixing at 1,000 rpm, obtained suspension is filtered and is dried at room temperature.EFFECT: method provides simplifying and accelerating the process of nanoencapsulation, while reducing accompanying loss.1 cl, 2 dwg, 5 ex

ethod of producing adaptogen nanocapsules in agar-agar // 2603457
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, namely to method of producing nanocapsules, and describes method of producing adaptogen nanocapsules. Method is characterized by fact, that extracts of eleuterococcus, ginseng, chinese magnolia vine, aralia or rhodiola rosea are added to agar-agar suspension in isopropanol in presence of E472c as surfactant, while mixing at 1,300 rpm, then 1,2-dichloroethane is added as precipitant, weight ratio nucleus:shell in terms of dry substance makes 1:1, 1:3 or 5:1, obtained suspension is filtered and is dried at room temperature.EFFECT: method provides simplifying and accelerating the process of nanoencapsulation, while reducing accompanying loss.1 cl, 3 dwg, 11 ex

Antifriction alloy (concentrate) // 2603189
FIELD: nanotechnology.SUBSTANCE: present invention relates to antifriction alloy concentrate containing nanodiamond powder, obtained by detonation synthesis, transformer oil, additionally contains aviation kerosene of T-1 type and oleic acid at the following ratio of components, wt.%: nanodiamonds obtained by detonation synthesis - 0.30-5.0; oleic acid - 12-50; aviation kerosene of T-1 type - 6.0-25.0; transformer oil - the balance.EFFECT: technical result of the present invention is replacement of a diamond-containing furnace charge containing impurities of metals with nanodiamonds without impurities, obtained by detonation synthesis, vinylsuccinimide dispersant - with more accessible component, as well as limit increase of nanodiamonds obtained by detonation synthesis with preservation of sedimentation stability of composition.1 cl, 1 tbl

Antifriction alloy // 2603188
FIELD: nanotechnology.SUBSTANCE: present invention relates to antifriction alloy containing nanodiamond powder, obtained by detonation synthesis, additionally contains aviation kerosene of T-1 type and oleic acid at the following ratio of components, wt.%: nanodiamonds obtained by detonation synthesis - 0.1-0.25; oleic acid - 8-60; aviation kerosene of T-1 type - 2.0-15.0; transformer oil - the balance.EFFECT: technical result of the present invention is replacement of a diamond-containing furnace charge containing impurities of metals with nanodiamonds without impurities obtained by detonation synthesis, vinylsuccinimide dispersant - with more accessible component, reduced size of solid phase conglomerates with preservation of sedimentation stability of composition.1 cl, 1 tbl

ethod of active layer producing for resistive memory // 2603160
FIELD: computer engineering.SUBSTANCE: invention can be used in making computer memory components, microprocessors, electronic passports and cards. Natural purified graphite is ground, in produced powder solvent is intercalated, not leading to graphite chemical oxidation, but promoting graphite stratification, for example, dimethyl formamide or N-methylpyrrolidone. For graphite particles stratification produced mixture is treated with ultrasound and obtaining suspension with graphene content of 50 %. For graphene fluoridation introducing from 3 to 10 % of hydrofluoric acid and from 40 to 47 % of water, including said intervals values. Smaller amount of hydrofluoric acid corresponds to larger amount of water and vice versa. Performing graphene fluoridation to 50-80 % for 20-60 days, including said values. Then, forming FG active layer for resistive memory element, for this purpose fluorinated suspension is dropwise applied on Si substrate or in combination using spin coulter, distributing it to required layer thickness, dried and washed in water. In another embodiment, fluorinated suspension, first washed, and then dropwise applied on Si substrate or in combination using spin coulter, distributing it to required layer thickness, and dried.EFFECT: invention enables maximum resistive effect stability.4 cl, 2 dwg, 5 ex

ethod of making vacuum sensor by nano structure based on mixed semiconductor oxides and vacuum sensor based thereon // 2602999
FIELD: gas industry.SUBSTANCE: invention relates to diluted gas pressure sensors, as well as methods of said sensors making. Method of pressure sensors making includes formation of heterostructure, producing of thin-film semiconductor resistor in it, having shape of netted nano structure (SiO2)50 %-c(SnO2)50 %(In2O3)c (where c is In2O3 mass fraction, 1 %≤c≤15 %), securing of said heterostructure in sensor housing, and connection of heterostructure contact pads with housing outputs by contact conductors. Pressure sensor manufactured in compliance with proposed method, includes in its structure housing, installed in it thin-film heterogeneous structure with thin-film semiconductor resistor formed in it, contact sites, which formed in heterogeneous structure, housing outputs and contact conductors connecting contact pads with housing outputs.EFFECT: technical result of invention consists in increase of pressure sensor sensitivity when performing measurements in low vacuum area.2 cl, 8 dwg

ethod of polymer composite producing with nano modified filler (versions) // 2602798
FIELD: manufacturing technology.SUBSTANCE: invention relates to method of polymer composite producing with nano modified filler. Method of polymer composite producing with nano modified filler involves dissolving polymer in first solvent at temperature of 90 °C, ultrasound processing of carbon nanotubes (CNT) located in second solvent, mixing of dissolved polymer with CNT solution, obtained solution ultrasound treatment and thermal treatment, method is distinguished by that CNT solution comprises conical carbon nanotubes, preliminary functionalized by thermochemical processing in mixture of nitric and sulfuric acids with hydroxyl and carboxyl groups. Also disclosed is embodiment of method.EFFECT: production of polymer composite with carbon nanotubes uniform content.2 cl, 2 dwg, 1 ex

ethod of producing titanium dioxide/carbon composite // 2602536
FIELD: chemistry.SUBSTANCE: invention can be used in production of effective electrode materials in chemical current sources, sorbents. To obtain a titanium dioxide/carbon TiO2/C composite, thermal decomposition of a titanium-containing precursor in an inert atmosphere is performed. Titanium-containing precursor used is titanium glycerolate Ti(C3H7O3)4, which is heated at a rate of 5 deg/min to annealing temperature of 360-850 °C and kept at said temperature for 0.5 hours.EFFECT: invention enables to obtain titanium dioxide/carbon nanocomposite with different lattice symmetry and morphology of weakly agglomerated nanorods.1 cl, 2 dwg, 5 ex

ethod of producing colloidal silver nanoparticles // 2602534
FIELD: nanotechnology.SUBSTANCE: invention relates to methods of producing highly dispersed colloidal particles or nanoparticles of metallic silver, which can be used in biotechnology, medicine and veterinary science as part of preparations with antimicrobial action. Described is a method of producing colloidal silver nanoparticles, involving dissolution in water of a medical polymer and a silver salt, reduction of silver ions, wherein for reduction of silver ions obtained solution is subjected to electron-beam treatment by passing through it a beam of accelerated electrons at absorbed dose of 5-30 kGy.EFFECT: technical result is high antimicrobial activity, low toxicity and high stability of aqueous solution of silver nanoparticles.6 cl, 3 tbl, 9 ex

ethod of producing nanocapsules of medicinal plants with immunostimulating effect in carrageenan // 2602168
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, namely to method of producing nanocapsules and describes method of producing nanocapsules of medicinal plants with immunostimulating effect. Method is characterized by that echinacea tincture is added to suspension of carrageenan in benzene in presence of 0.01 g of E472c as surfactant, while stirring at 1,300 rpm, wherein core:coating weight ratio in terms of dry substance is 1:1 or 1:3, or 3:1; obtained suspension is filtered and dried at room temperature.EFFECT: method provides simplifying and accelerating of process of nanoencapsulation, while reducing accompanying loss.1 cl, 1 dwg, 4 ex

ethod of producing nano capsules of medicinal plants having immunostimulating effect // 2602167
FIELD: technological processes.SUBSTANCE: invention relates to method of nano capsules with echinacea tincture producing. Said method is characterized by, that echinacea tincture is added to of sodium carboxymethyl cellulose in petroleum ether suspension in presence of 0.01 g of E472c preparation with mixing at 1,300 rpm, obtained suspension of nano capsules is filtered and dried at room temperature, wherein nucleus/shell weight ratio in nano capsules makes 1:3, 1:1, 3:1, 1:5 or 5:1.EFFECT: invention simplifies and accelerates process of echinacea nano capsules producing and increases their mass output.1 cl, 1 dwg, 6 ex

ethod of producing nano capsules of medicinal plants having immunostimulating effect in agar-agar // 2602166
FIELD: nanotechnology; pharmaceutics.SUBSTANCE: invention relates to a method of producing nanocapsules with echinacea tincture. Above method is characterized by adding echinacea tincture to agar-agar suspension in benzol in presence of 0.01 g of E472c preparation as surfactant, while mixing at 1,300 rpm, filtering the produced suspension of nanocapsules and drying at room temperature, wherein nucleus/shell weight ratio of nanocapsules is 1:3, 1:1, 5:1 or 3:1.EFFECT: invention simplifies and speeds up process of producing echinacea nanocapsules and increases weight yield.1 cl, 2 dwg, 5 ex

ethod of producing medicinal plant nanocapsules having cardioactive action in agar-agar // 2602165
FIELD: nanotechnology.SUBSTANCE: invention relates to a method of producing nanocapsules with Hawthorn tincture. Above method is characterized by adding the Hawthorn tincture to agar-agar suspension in hexane in the presence of 0.01 g of the E472 preparation as a surfactant while mixing of 1,300 rpm, filtering the produced suspension of nanocapsules and drying at room temperature, wherein nucleus/shell weight ratio of nanocapsules is 1:3, 1:1 or 5:1.EFFECT: invention simplifies and speeds up process of producing nanocapsules of Hawthorn tincture and increases weight yield.1 cl, 1 dwg, 1 ex

ethod of producing metal-modified filler for rubber // 2602129
FIELD: manufacturing technology.SUBSTANCE: invention relates to production of elastomeric composite materials. Method comprises preparation of saturated aqueous solution of metal formate with addition of filler. Metal is selected from copper, nickel or cobalt. Filler is selected from aerosil, colloidal silicic acid or technical carbon. For adsorption of metal formate on filler suspension with periodic stirring is held for 72 hours at 25 °C. Solution is filtered, precipitate is dried for 3 hours at temperature of 70 °C and ground. Ground powder is subjected to high-temperature decomposition with formation on surface of filler metal nano- and microparticles.EFFECT: simplified method of modifying filler for rubber and possibility of forming fine particles of variable-valence metals on surface of filler for use in production of rubber with high heat resistance, electrical conductivity and heat conductivity.1 cl, 1 dwg, 2 tbl

Electrochemical method for producing nano-sized titanium (iv) oxide structures // 2602126
FIELD: chemistry.SUBSTANCE: invention can be used in producing heterogeneous catalysts with highly developed surface, and electrodes in lithium-ion batteries. Electrochemical method for producing nano-sized titanium (IV) oxide structures involves anodic oxidation of titanium electrode in ionic liquid with addition of water or propylene glycol in an air atmosphere. Ionic liquid has general formula K+A-, where K+ - alkylimideazoline, A- -NTf2 -, or PF6 -, or Cl-. Anodic oxidation is carried out at 20-25 °C for 5-30 minutes at direct current of 1-10 mA or at constant potential of 1-10 V.EFFECT: invention enables to obtain titanium oxide nanoparticles in the form of nanospheres, nanofibres or nanorods depending on conditions of synthesis.1 cl, 8 dwg, 7 ex
 
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