Nano-technology (B82)

B82            Nano-technology(3328)
ethod of firefighting using a nano-powder and device for its implementation (versions) // 2607770
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnologies in field of fire-fighting equipment. Method of firefighting with a nano-powder comprises delivering a shell with the firefighting powder to the fire seat using a thrower, destruction of said shell and supplying of firefighting substance to the fire seat in the form of nano-powder.EFFECT: proposed technical solution relates to the throwing firefighting means.3 cl, 4 dwg
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
ethod of producing hybrid two-phase system of delivery of poorly soluble and insoluble in water biologically active substances with controlled release kinetic // 2607598
FIELD: pharmaceutics.SUBSTANCE: group of inventions relates to pharmaceutical industry, namely, to system of delivery of poorly soluble and insoluble biologically active substances (BAS) with controlled release kinetics, which is spherical nanoparticles containing hydrophobic core formed of biocompatible and biodegradable hydrophobic polymers, such as polyhydroxybutyrate, polylactide, polyglycolide, polydioxanone, poly-ε-caprolactone, polyhydroxyvalerate, copolymer of lactic and glycolic acids, in which there is a partially soluble or insoluble in water BAS; wherein hydrophobic core is surrounded with hydrophilic fragments of amphiphilic polymers consisting of one fragment of water-soluble carbon chain polymer with molecular weight Mn=1,000-30,000 Da and one end hydrophobic group, including one aliphatic radical with carbon atoms number in carbon chain 9÷20, as well as to method of producing such system of delivery.EFFECT: group of inventions provides higher water compatibility of poorly soluble and insoluble BAS, increased stability of medicinal substances and possibility of controlling release rate of BAS.6 cl, 7 ex, 6 tbl, 15 dwg
ethod of producing nanocapsules of amino acids in konjac gum // 2607589
FIELD: chemistry.SUBSTANCE: invention relates to encapsulation. Described is a method of producing nanocapsules of L-arginine or norvaline. Shell of nanocapsules used is konjak gum. According to disclosed method, L-arginine or norvaline is added to suspension konjak gum in butyl alcohol in presence of an E472c preparation, at a weight ratio of core: shell 5:1 or 1:3, or 1:1 respectively. Ethyl acetate is then added. Obtained suspension of nanocapsules is filtered and dried.EFFECT: invention provides a simpler and faster process of producing nanocapsules, reduces losses during production thereof (high mass output).1 cl, 1 dwg, 7 ex
ethod of producing functionalised imaging agents with anti-stokes photoluminescence based on polyacrolein dispersions // 2607587
FIELD: chemistry.SUBSTANCE: invention relates to chemistry of high-molecular compounds and a method of producing imaging agents with anti-Stokes photoluminescence in form of an aqueous dispersion of polyacrolein particles, containing nano-sized anti-Stokes phosphors, by polymerisation of acrolein in aqueous alkaline medium, carried out in two steps, first of which comprises settling polymerisation, and at second step obtained product undergoes further radical polymerisation in presence of a water-soluble initiator K2S2O8, characterised by that first polymerisation step is carried out i presence of anti-Stokes phosphors in amount of 0.1–1.5 wt% with respect to monomer, pre-treated with tetramethylammonium hydroxide, which are used as a polymerisation initiator.EFFECT: invention makes it possible to encapsulate nanosized anti-Stokes phosphors in volume of polymer matrix, which protects optical properties of nanophosphors from biological media and provides colloid-chemical properties required for use as imaging agents in biological analysis and biological imaging. 1 cl, 1 tbl, 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 treating haemorrhagic cystitis in cats // 2606910
FIELD: veterinary science.SUBSTANCE: invention relates to veterinary science, namely to method of treating haemorrhagic cystitis in cats. Method involves administering antibacterial preparation into urinary bladder. As antibacterial preparation suspension is used, containing silver nanoparticles, stabilized by submicron particles of titanium dioxide, and synthetic polymer poly-N-vinylpyrrolidone-2 in dose of 2.0 ml once a day for 2–4 days.EFFECT: invention usage allows to reduce length of treatment.1 cl, 3 tbl, 3 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
Drug of anti-tuberculosis action on the basis of d-cycloserine in the form of a lyophilisate and method of producing a medicinal preparation // 2606839
FIELD: pharmaceutics.SUBSTANCE: invention relates to pharmaceutical industry and medicine and represents a drug of anti-tuberculosis action in the form of a lyophilisate for oral application weight 2.0±0.20 g, containing D-cycloserine 12.5±1.25 wt%, polymer PLGA 50/50 50±5.0 wt%, polyvinyl alcohol 12.5±1.25 wt% and D-mannitol 25±2.5 wt%, with content of D-cycloserine from 0.225 to 0.275 g, which when diluted with water in amount of 100±10 ml forms a suspension of particles with size of not more than 800 nm, components of not less than 90 %.EFFECT: invention provides high stability under conditions of long-term storage at temperature 5±3 °C for 18 months and accelerated storage at temperature 25±2 °C for 184 days, high bioavailability, including high tissue bioavailability in target organs of the infectious process, and low toxicity, neurotoxicity.6 cl, 3 ex, 5 tbl
Heat-protective nanocomposite coating and formation method thereof // 2606814
FIELD: engines and pumps; heat exchange.SUBSTANCE: heat-protective nanocomposite coating containing zirconium oxide, deposited on surface of articles from nickel alloy using magnetron system comprises primary continuous layer, gradient transition layer and film of zirconium oxide. Primary continuous layer consists of a nickel alloy, which corresponds to composition of said articles with zirconium and with additives of stabilising element. Gradient transition layer consists of two phases in form of a dielectric phase of zirconium oxide and metal phase of nickel alloy, which corresponds to composition of said article surface, and zirconium with addition of stabilising element, wherein fraction of oxide phase in transition layer increases with increase of its thickness. Method of forming said thermal-protective nanocomposite coating on surface of articles from nickel alloy is characterised by that it includes forming on surface of article a primary solid layer of nickel alloy, which corresponds to composition of said article with zirconium and with addition of stabilising element, gradient transition layer and sputtering a film of zirconium oxide until it reaches required coating thickness. Formation of said primary layer and gradient transition layer is carried out using magnetron system with two magnetrons. Using first magnetron a target made of said nickel alloy is sputtered, and using a second magnetron a second target made of zirconium with addition of stabilising element is sputtered. Said primary layer is formed by sputtering said targets in an argon atmosphere at intensity of atomic flux formed from said first target greater than intensity atomic flux from said second target. Then, formation of said gradient transition layer by sputtering said targets in presence of oxygen with formation in transition layer of zirconium oxide and non-nickel alloy. Oxygen partial pressure during sputtering is gradually increased to 1.5*10-3 Pa, and power of first magnetron, sputtering first target from said nickel alloy, is reduced up to its complete disconnection. In a particular embodiment, stabilising element used is a yttrium.EFFECT: higher mechanical strength of coating, high heat resistance, as well as high adhesion and cohesion.3 cl
ethod of separating water-oil emulsion using nanoparticles // 2606778
FIELD: oil industry.SUBSTANCE: invention relates to oil and bottom water treatment process. Disclosed is a method of separating water-oil emulsion by adding carbon nanotubes, containing metals, selected from: iron, cobalt, nickel. Surfactant is also added to emulsion and stirred. Further, method includes magnetic field exposure.EFFECT: technical result is faster process of oil treatment and reduction of residual water content of prepared oil.1 cl, 1 tbl
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
ethod for production of articles from powders of high-alloyed nickel-based alloys // 2606360
FIELD: metallurgy.SUBSTANCE: invention relates to powder metallurgy of refractory nickel alloys and can be used in production of shafts and discs operating at high temperatures with increased service life in aircraft gas turbine engines and gas pumping stations. Method of making articles from powder of a high-alloyed nickel-based alloy involves obtaining the powder of a high-alloyed nickel-based alloy, compacting the powder as a 3D billet, plastic deformation of the 3D billet in a sealed capsule-container and thermal treatment. Obtained is an alloy powder with the particle size of less than 50 mcm by gas-jet spraying the melt with crystallization at the cooling rate of not less than 50,000–100,000 K per second to form in the structure of the powder particles a supersaturated solid solution of alloying elements in nickel with sub-dendrite structure sized less than 2,000 nm. Compacting the powder as a 3D billet in a sealed capsule-container is carried out by stamping at the temperature of 500 °C up to a temperature not more than the recrystallization temperature for the high-alloyed nickel-based alloy.EFFECT: provided is higher level and stability of mechanical properties, as well as higher yield.3 cl, 1 tbl
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 analyzing information capacity of surface of nano-structured materials // 2606089
FIELD: electronics.SUBSTANCE: invention relates to micro- and nanoelectronics, physics and can be used for analysis of information characteristics of surface of nano-structured and self-assembling solid-state materials. Essence of method is obtaining image of analyzed surface with high resolution by means of atomic force microscopy characteristics of surface are calculated using average mutual information method, analyzed surface is classified by value of entropy and degree of order.EFFECT: analysis of information characteristics of surface of nano-structured and self-assembling solid-state materials.1 cl, 1 dwg

ethod for tannin nanocapsules producing // 2605850
FIELD: nanotechnology.SUBSTANCE: invention relates to encapsulation. Described is a method for producing tannin nanocapsules. Carrageenan is used as a shell of the nanocapsules. According to the method tannin is added to carrageenan suspension in benzene in the presence of E472c, at a weight ratio of tannin and carrageenan 1:3, or 1:1 or 1:2, respectively. Then petroleum ether is mixed and added. Obtained suspension of nanocapsules is filtered, washed and dried. Process of producing nanoncapsules is performed at 25 °C for 20 minutes.EFFECT: invention provides a simpler and faster process of producing nanocapsules, reduces losses during production thereof (high mass output).1 cl, 1 dwg, 4 ex

ethod of producing nanocapsules of cephalosporin preparations in interferon // 2605848
FIELD: medicine.SUBSTANCE: invention relates to medicine and consists in method of producing microcapsules of cephalosporin preparations, in which envelope is interferon, core is preparations of cephalosporins. During method implementation cephalosporin preparations and E472c as surfactant are added to aqueous solution of interferon, obtained mixture is mixed in magnetic stirrer until dissolving of mixture components to produce transparent solution, then slowly chloroform is added by drops, obtained suspension is filtered, washed with chloroform and dried, wherein ratio shell:core is 3:1.EFFECT: technical result consists in simplifying and accelerating of production of nanocapsules, as well as increase of mass output.1 cl, 1 dwg, 9 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

Resumption of blood flow in human blocked arteries by transferring nano incapsulated drug by means of medical devices designed therefor, and release of nano incapsulated drug within human artery at physiologic ph level // 2605793
FIELD: medicine.SUBSTANCE: group of inventions refers to medicine and concerns medical device introduced into lumen of any part of body in order to deliver drug for treatment of medical conditions associated with lumen of body part, as well as method for treatment applying such device at physiologic pH level. Such conditions include restenosis, atherosclerosis, and accumulation of plaques in lumen of body part. Device can include stent, cylinder, balloon catheter, stent installed on balloon, and has external surface covered with two or more nano vehicles having multiple average diameters. Multitude of nano vehicles have average diameter, acceptable for penetration through one or more layers of two or more layers of lumen of body part - intima, middle layer, and adventitial layer of vessel / vessels. Nano vehicle includes drug surrounded by encapsulating medium which contains one or more of biological agent, filler based on blood, and phospholipid, dissolved at pH less than 7.4.EFFECT: group of inventions provides release and contact with drug only in destination tissues, with prevention of focal restenosis, stabilization of drug by encapsulating medium, with improved affinity of carriers for destination tissues, improvement of target delivery during degradation of encapsulating medium.26 cl, 6 dwg, 5 ex

ethod of luminescent quartzoid bismuth-containing material producing based on high-silica porous glass // 2605711
FIELD: glass.SUBSTANCE: invention relates to novel optical glass-like quartzoid materials technology, having luminescence in wide spectral range, and can be used in production of fibre-optic guides with laser generation in infrared spectral range and various devices on their basis for fibre-optic communication lines components optimization. Disclosed is method of bismuth-containing quartzoid glass producing based on nano-porous high-silica glass (NPG). Method involves introduction in NPG pore space matrices in several stages by 24 hours at 22±2 °C of 0.5M solution of Bi(NO3)3, drying of samples at 30-65 °C for 40-60 minutes. Impregnated and dried samples are subjected to multistage heat treatment in air atmosphere in electric furnace. At that, samples are placed on substrate from high-purity quartz glass and heated for 5 minutes using oxygen-hydrogen burner, which is supplied from quartz substrate side.EFFECT: invention ensures production of glass-like quartzoid bismuth-containing materials to form different bismuth active centers (BAC) in them, including the IR luminescence centers.3 cl, 4 dwg, 1 ex

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

Polymer composite nanomaterial // 2605590
FIELD: chemistry.SUBSTANCE: invention relates to polymer composite nanomaterials based on polyethylene terephthalate, intended for production of single-layer containers in form of bottles and containers for different purposes, having improved gas permeability. Disclosed composite material has improved O2 permeability and vapour permeability.EFFECT: technical result is achieved by modifying polyethylene terephthalate with a nanocomposite polyamide, which, in turn, comprises a polyamide and organomodified KATAPAV montmorillonite obtained by polymerisation in situ.1 cl, 3 tbl, 1 dwg

ethod of partial demagnetisation of nanoheterogeneous high-coercivity magnets of type sm-co-fe-cu-zr // 2605544
FIELD: electrical engineering.SUBSTANCE: invention relates to electrical engineering and can be used for stabilisation of magnetic properties of magnets of type Sm-Co-Fe-Cu-Zr by partial demagnetisation. Method of partial demagnetisation of nanoheterogeneous high-coercivity magnets of type Sm-Co-Fe-Cu-Zr involves their heating in an inert medium. Prior to heating poles of magnet are closed with a magnetic circuit. Heating magnetised magnet till saturation is carried out to working temperature in range of 875-1,025 K. Cooling from working temperature to 675 K is performed at a rate of 1 K/min.EFFECT: technical result consists in improvement of accuracy and stability of operation of navigation equipment and aircraft automation systems.1 cl, 3 tbl

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

Urban protective system device and method of its erection // 2604933
FIELD: construction.SUBSTANCE: urban protective system device includes a water pressure shell made from composite materials with shape memory, consists of a channel-tray of parabolic or another shape along the perimeter from a composite nanomaterial keeping the shape and with increased roughness. Channel-tray consists of separating sections, in which there is a grate structure of vertical and horizontal elements from nanomaterials, flexible channel and coastal links - dampers, on which there are upper filled with soil and lower curable shells, as well as upper and lower and perforated water-suspending structures from composite nanomaterials reinforced with channel anchors to the bottom of the channel-tray by flexible links - dampers, and with cable-stayed systems to coastal and channel anchor devices. Sloping parts of the channel-tray have holes and additional trays for its release from deposits. On adjacent to the channel-tray side territories there are gabion or soil-reinforced retaining walls coated with a material with seeds, which are planted with vegetation, i.e. agro-melioration is used to additionally ensure safety of people and objects of municipal buildings, which are notified about approaching external effects and on technical state of the complex system by means of monitoring sensors and remote devices associated with a geo-information system, access to which is provided by a cable bridge over the channel-tray. Deposits settled in sections of the channel-tray are transported according to their qualitative composition through the additional trays with the help of compressed gas devices, and the muddy stream is filtered in settlers-biotanks and then enters the watercourse. Intensification of bases of urban or other buildings is performed with the help of a system with filled shells with a filler and flexible dampers-links reacting on natural and man-made actions, thus providing safety, including environmental one, of urban buildings. Device is equipped with solar storage units, which provide energy for the population during emergency situations (ES), and an additional monitoring system for warning the population on ES. Rainwater deflecting devices allows protecting against flooding of the territory of urban built-up/settlements. Method of creating the urban protective system includes erection of the above described device.EFFECT: provided is higher safety and operation of the population and enterprises at natural and man-made disasters, such as floods, mudflows, etc.2 cl, 4 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

Nanocomposite based on carbon nanotubes for protection of radio electronic elements against impact acceleration // 2604838
FIELD: electronics.SUBSTANCE: invention relates to nanocomposite creation techniques for radio electronics and acoustics with special properties. Nanocomposite consists of polyurethane, in which carbon nano-tubes are added in amount sufficient for obtaining nanocomposite, having density of 1,200 kg/m3, and Young's modulus of 125 MPa, allowing to shift fillers structures resilient mechanical oscillations fundamental frequencies, for short pulses (Δτ = 0.5 ms) oscillations amplitude is maximum, for long pulses (Δτ = 1.0 ms) oscillations amplitude is minimum.EFFECT: technical result consists in producing nanocomposite with high elastic waves absorption coefficient and considerable Young's modulus coefficient.1 cl, 3 dwg
ethod of contact lithotripsy // 2604800
FIELD: medicine.SUBSTANCE: invention relates to medicine and surgery. Concrement is affected during contact lithotripsy. Heat-resistant, wear-resistant absorptive layer is applied on distal end of light guide. Laser radiation is used, which is absorbed in specially layer, applied on fibre end. Film, which formes said layer, can contain copolymer composite or dispersion of carbon nanotubes. Penetration of concrement in place of contact with light guide is under high temperature. Wherein generated ultrasound of 1 MHz frequency disinfects place of action, reduces release of bacterial flora from biofilms, contained in concrement.EFFECT: method simplifies technology of preparing lithotripters, increases efficiency of lithotripsy.9 cl

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

High-strength waterproof organocomposite and preparation method thereof // 2604621
FIELD: manufacturing technology.SUBSTANCE: invention relates to production of light-weight high-strength water-resistant organocomposites based on fibrous fillers of ultrahigh molecular weight polyethylene (UHMWPE) and polymer binder and can be used in elements of structures in various engineering fields: aviation, machine-shipbuilding, chemical and defense, etc. Disclosed is a high-strength waterproof organocomposite made of fibrous filler based on high-strength high-modulus multi-filament polyethylene fibres and polymer binder based on epoxy resin with amine curing agent. Surface of filler is pretreated in barrier discharge plasma with impact of pulse barrier discharge in air at atmospheric pressure when exposed to alternating voltage with frequency of 10-50 kHz, with specific power of discharge of 50-500 W/m2, at rate of treatment of 0.3-7 m/min. Method then comprises treatment with acetone of a solution suspensions metal-containing nanostructures in carbon-polymer media. Filler is then dried, impregnated with polymer binder prepared by mechanical mixing of components, and organic composite is moulded with hardening temperature not higher than 75 °C. As epoxy resin of polymer binder, organocomposite contains a mixture of epoxy-diane (A) and epoxy-aliphatic (B) oligomers in ratio A:B from 10:1.3 to 10:3. As amine curing agent - eutectic mixture of metaphenylenediamine (MPDA) and 4,4′-diaminodiphenylmethane (4,4′-DADPM) at following weight ratio from 22:78 to 78:22; and additionally contains a mixture of oligoester-cyclocarbonates, urethane prepolymer. Ratio of components in organocomposite, pts.wt: fibre filler - 250-700; epoxy-diane oligomer (A) - 100; epoxy-aliphatic oligomer (B) - 13-30; mixture of oligoester-cyclocarbonates - 10-20; urethane prepolymer - 5-25; eutectic mixture MPDA + 4,4′-DADPM - 28-45.EFFECT: invention improves physical and mechanical properties and water resistance of organic composite while providing environmental friendliness and simple process during implementation of industrial production.7 cl, 1 dwg, 3 tbl, 6 ex

ultilayer material with chitosan layer of nanofibres and superfine fibres with antibiotic // 2604410
FIELD: medicine.SUBSTANCE: invention relates to medicine, more specifically to electroformed fibrous materials used to make wound coverings. Described is a multilayer material sensitive to the Enterococcus faecalis 49 strain, containing a layer of nanofibres and superfine fibres of Mushroom Chitosan or a mixture of Mushroom Chitosan and Chitosan of animal origin with surface layer density of up to 50 g/m2 and diameter of fibres in the range of up to 1,000 nm and/or up to 10 mcm, which contains ciprofloxacin.EFFECT: invention leads to achieving the synergetic effect of the combined use of ciprofloxacin and Chitosan nanofibres/superfine fibres.1 cl, 1 dwg, 1 tbl
Low-voltage pulse electric arc method of producing metal nanopowder in liquid medium // 2604283
FIELD: metallurgy.SUBSTANCE: invention relates to low-voltage pulse electric-arc production of metal nanopowder in liquid medium. Method involves installation of two electrodes in a vessel with a liquid medium, applying pulse voltage to electrodes to form plasma in liquid medium and formation of nanoparticles from material of electrodes, precipitation of nanoparticles. Method uses a first electrode, installed with possibility of vibration on mechanical vibrator and with possibility of back-and-forth movement along entire length of second electrode. Second electrode used is a strip from same material, as first electrode, fixed at bottom of vessel with liquid medium. Bipolar pulses are applied on electrodes from a low-voltage generator with forced closure and opening of electrical circuit. Discharge gap between electrodes is sinusoidally varied to allow generation of high-current discharge between electrodes.EFFECT: increased intensity of electric field between electrodes and reduced contamination of produced powder.1 cl, 1 ex
 
2550821.
Up!