Nano-structures formed by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units (B82B1)

B82   Nano-technology(3328)
B82B1                 Nano-structures formed by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units(1223)
Polymer compound, resistant to ionising radiation // 2615514
FIELD: chemistry.SUBSTANCE: invention relates to polypropylene based polymeric compounds and may be used for health care products. The compound contains polypropylene with a melt flow index of 25-35 g/10 min, divinylstyrene thermoelastoplast with a melt flow index below 1 g/10 min, polycarbonate with a melt flow index of 6.51 g/10 min, sterically hindered amine, triallylisocyanurate, nanocellulose as a stabiliser, in the amount of 0.0010 to 0.0500 wt %.EFFECT: polymeric compound is high resistant to ionising radiation, increased storage life of the products made thereof.3 tbl, 6 ex
Carbon fiber for composite materials with improved electrical conductivity // 2615427
FIELD: chemistry.SUBSTANCE: electrically conductive carbon fiber is described, consisting of filaments of carbon fibers which include a metallic coating wherein the carbon fiber filaments include the composition present on the metallic coating based on at least one polymeric binder containing conductive nanoparticles, and the concentration of the metal coating is 8-25 wt %, and the concentration of conductive nanoparticles is 0.1-1 wt %, in each case based on the weight of the carbon fibers provided with a metal coating and a composition. The method of manufacturing carbon fibers for composite materials and a fiber-reinforced composite material are described as well.EFFECT: composite material with improved electrical conductivity is obtained.15 cl, 2 tbl, 6 ex, 2 dwg
esoporous titanium dioxide nanoparticles and methods for their prepairing // 2615402
FIELD: chemistry.SUBSTANCE: titanium oxide is in the form of the uniform spherical particles with the size of 20 nm to 100 nm. Each particle contains mesopores with the uniform distribution of their sizes centered at the value of 2 nm to 12 nm. For particles of TiO2, an aqueous solution of a titanium compound is prepared at the concentration of 0.5 to 1.5 moles per liter in the presence of the alpha hydroxy carboxylic acid in a molar ratio of the acid to titanium of 0.02 to 0.2; the solution is heated to 70-80°C followed by the addition of the anatase seeds TiO2, and this temperature is maintained of 1-3 hours; then it is heated for 4.2 hours to the reflux temperature in the range of 100°C; the solution is cooled to the room temperature, and the reaction product is separated.EFFECT: improved quality of titanium oxide due to the homogeneity of the particles and the narrow distribution of the pore size.8 cl, 6 dwg
Pharmaceutical composition based on β-modification of 2,3-bis-(hydroxymethyl)quinoxaline-n,n'-dioxide and method for obtaining thereof // 2614736
FIELD: chemistry.SUBSTANCE: group of inventions relates to medicine. Disclosed a pharmaceutical composition containing crystalline modification of β2,3-bis-(hydroxymethyl)quinoxaline-N,N'-dioxide, characterised by a number of diffraction peaks (d, Ǻ) and their intensity (Irel., %), and silver nanoparticles. Disclosed production process. Antimicrobial, antibacterial and bactericidal pharmaceutical composition, comprising crystalline β-modification of 2,3-bis-(hydroxymethyl)quinoxaline-N,N'-dioxide, characterised by a number of diffraction peaks (d, Ǻ) and their intensity (Irel., %), and silver nanoparticles, constitutes a light fluffy powder of yellowish to light-brown colour, non-odorous.EFFECT: disclosed the said pharmaceutical composition and method for obtaining thereof.7 cl, 6 dwg, 4 ex
ethod of betulin nanocapsules production // 2614713
FIELD: nanotechnology.SUBSTANCE: method of betulin nanocapsules production, at that 100 mg of betulin powder is dispersed into 300 mg of konjac gum suspension in ethanol, in the presence of E472c 0.01 g, while mixing at 1300 rev/min, then add 3 ml of butyl chloride, the resulting suspension is filtered and dried at the room temperature.EFFECT: method simplifies and accelerates the process of nanocapsules production, increases the yield by weight.3 ex
ethod for plasmon-resonance photothermal tumour therapy in experiment // 2614507
FIELD: medicine.SUBSTANCE: solution of gold nanorods coated with polyethylene glycol is injected intravenously to animals with tumours. 24 hours after administration, diagnostic laser irradiation is performed by an infrared laser with wavelength in the range of 700-900 nm with power density in the range of 1-2 W/cm2 for 2 minutes. Tumour heating temperature is measured using the thermograph. At tumour heating less than 45°C, nanoparticles are intravenously injected once again, and 24 hours after nanoparticle administration diagnostic laser irradiation is performed. Local tumour heating temperature is measured. Upon reaching a temperature of 45°C and higher within 2 minutes, therapeutic infrared laser irradiation with wavelength in the range of 700-900 nm with power density of 4-5 W/cm2 is performed for 20 minutes.EFFECT: increased efficiency of tumour laser hyperthermia due to intertwined tumour regression, manifested in necrobiotic changes in tumour cells and inhibition of its growth.2 ex, 1 tbl, 4 dwg
ethod for hybrid plasmon-luminescent markers production // 2614245
FIELD: chemistry.SUBSTANCE: method consists in formation of metal plasmon nanoparticles on the inorganic luminescent nanoparticles surface, where nanoparticles are previously doped by rare earth metal ions. Plasmon nanoparticles are prepared by reduction of liquid solutions. The colloidal solution of inorganic luminescent nanoparticles in 1.2-dichloroethane is mixed with a supramolecular complex solution [{Au10Ag12(C2Ph)20}Au3PPh2(C6H4)3PPh2)3][PF6]5 in 1,2-dichloroethane to obtain a liquid solution, the liquid solution is recovered by laser radiation with a wavelength corresponding to the absorption band of the supramolecular complex, a power density of from 0.1 to 1 mW/cm2at laser exposure time of 10-60 minutes.EFFECT: invention enables high chemical purity of markers and small number of processing steps.5 dwg, 3 ex
Application of anabaena sp. pcc 7120 strain for silver nanoparticles production // 2614118
FIELD: biotechnology.SUBSTANCE: during biological recovery of silver with nanoparticles production, incubation is performed under constant illumination of the Anabaena sp. PCC 7120 in nitrogen-free medium with silver nitrate.EFFECT: invention provides a solution of silver nanoparticles, wherein the nanoparticles exist in a free state.
ethod for producing dry rosehip extract nanocapsules // 2613881
FIELD: nanotechnology.SUBSTANCE: method for producing nanocapsules of dried rosehip extract, wherein as the shell of the nanocapsules the Konjac Root Powder is used, dry rosehip extract is dispersed in a Konjac Root Powder butanol in the presence of 0.01 g E472s as surfactant while stirring 1300 rev/min, then 5 ml of chloroform, after which the precipitate was filtered off and dried at room temperature, wherein the ratio of dry rosehip extract to Konjac Root Powder is 1:1, 1:3 or 5:1.EFFECT: way to simplify and accelerate the process of producing the nanocapsules, to increase the yield by weight.4 ex

ethod of producing gas sensor based on thermovoltaic effect in zinc oxide // 2613488
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnology and can be used in making gas sensors. Disclosed is a method of making gas sensors, comprising a housing, a two-layer nanostructure of ZnO-ZnO:Cu installed therein on a base, point contacts connected to terminals of the housing placed in an insulator and a nozzle providing contact of detected gas with a sensitive element. Two-layer nanostructure of ZnO-ZnO:Cu, in which a thermovoltaic effect is observed, is synthesised via sol-gel technology from sol by dissolving an inorganic zinc salt in alcohol and adding a surfactant, followed by stirring with subsequent ageing of sol. Lower layer of nanostructure is formed from pure zinc oxide by immersing substrate at ⅔ length in sol and drying. Upper layer of zinc oxide is doped with copper, formed by two or three times dipping of other end of substrate at ⅔ length with subsequent drying and annealing.EFFECT: invention enables to make a gas sensor based on thermovoltaic effect in zinc oxide, which has high sensitivity to reducing gases.3 cl, 4 dwg
Composite welding wire for high-strength alloyed steel arc welding // 2613243
FIELD: metallurgy.SUBSTANCE: wire comprises a metal rod and anelectrolytically applied thereto nanocomposite coating incudling a metal matrix with distributed therein nanoparticles. The matrix contains nanoparticles of fluoride or fluoride mixture of rare-earth metal and nano-sized particles of a refractory metal boride in the following ratio of matrix volumes and nanoparticles in the coating, %: metal matrix 55-96, nanoarticles of fluoride or fluoride mixture of rare-earth metal 3-20, nanoparticles refractory metal boride 1-25. Rare-earth metal fluoride was selected from the group consisting of lanthanum fluoride, yttrium fluoride, and cerium fluoride. Titanium boride or zirconium boride is used as refractory metal boride.EFFECT: welding wire increases strength, ductility, and toughness of alloyed steel welds.3 cl, 6 tbl
ixture for heat-resistant aerocrete on bases of nanostructured gypsum binded composite, method of products manufacture // 2613209
FIELD: building.SUBSTANCE: invention is related to the industry of construction materials and can be used for thermal insulation and heat insulation structural materials in the manufacture of buildings and structures in industrial and civil construction. The mixture for heat-resistant aercrete includes nanostructured gypsum bound composite, a foaming agent and water, where the composite is used as a binder consisting of gypsum and fine ground silica-component - a highly concentrated suspension of silica-containing material with particle size less than 5 microns constituting 20-50% and 12-20% of humidity. As a foaming agent synthetic foaming agent is used in the following ratio: the said binder (dry basis) - 60.7-75.3%, gypsum plaster - 10-90%, silica-component - 90-10 %, the synthetic foaming agent - 0.4-0.6% and water - 24.1-38.7%.EFFECT: invention allows improving the basic technical and operational, and thermal characteristics: mechanical strength, porosity, density, thermal conductivity, heat resistance improvement.2 cl, 2 dwg, 5 tbl
ixture for heat-resistant aerocrete on basis of nanostructured gypsum binded composite, method of products manufacture // 2613208
FIELD: building.SUBSTANCE: invention is related to the industry of construction materials and can be used for thermal insulation and heat insulation structural materials in the manufacture of buildings and structures in industrial and civil construction. The mixture for heat-resistant aercrete includes nanostructured gypsum bound composite, a foaming agent and water, where the composite is used as a binder consisting of gypsum and fine ground silica-component - a highly concentrated suspension of silica-containing material with particle size less than 5 microns constituting 20-50% and 12-20% of humidity. As a foaming agent protein is used in the following ratio: the said binder (dry basis) - 60.7-75.3%, gypsum plaster - 10-90%, silica-component - 90-10 %, the foaming agent - 1.3-2.4 % and water - 22.5-36.9 %.EFFECT: invention can improve the basic technical and operational, and thermal characteristics: mechanical strength, porosity, density, thermal conductivity, heat resistance improvement.2 dwg, 5 tbl, 2 cl
ethod of producing drug and drug preparation // 2613106
FIELD: medicine.SUBSTANCE: invention relates to medicine and pharmaceutical chemistry, particularly it concerns drug, based on nanoparticles of phthalocyanine, which can be used in treating malignant new growths by pulsed laser ablation of nanoparticles. Three-stage method of producing drug is described and thus produced preparation with following composition in wt%: phthalocyanine in form of nanoparticles 0.1–1.0; SAS 0.1–1.5; sodium chloride 0.1–1.5; water – rest.EFFECT: drug preparation, produced by this method, shows high efficacy, providing tumor growth inhibition (TGI) up to 100 %, as well as stability during storage – after 3 years storage size of phthalocyanine nanoparticles changed insignificantly.3 cl, 2 tbl, 7 ex
ethod of producing fibres from carbon nanotubes // 2612716
FIELD: chemistry.SUBSTANCE: invention relates to chemical engineering of fibre materials and a method of producing fibres from carbon nanotubes, which can be used for producing high-strength, high-modulus, electrically conducting composite materials of special purpose. Method of producing is carried out by exposing carbon nanotubes to a dispersion in a liquid medium, with subsequent removal of liquid medium. Medium used is a chlorine-containing organic solvent. Exposure involves mixing a dispersion of nanotubes with organosilicon liquid located between electrodes, wherein electric field intensity is 5–20 kV/cm, which is determined by formula E = U/d, where E is electric field intensity, kV/cm, U is voltage applied to electrodes, kV, d is distance between electrodes, cm.EFFECT: invention provides technological effectiveness of producing fibres from carbon nanotubes.1 cl, 5 ex
etamorphic photovoltaic converter // 2611569
FIELD: power industry.SUBSTANCE: invention relates to the semiconductor electronics and can be used to produce solar cells. Metamorphic phototransformator includes a substrate (1) of GaAs, metamorphic buffer layer (2) and at least one photoactive p-n-junction (3), made of InGaAs and comprising a base layer (4) and the emitter layer (5), a layer (6) of the wide windows of In(AlxGa1-x)As, where x=0.2-0.5, and a contact sublayer (7) of InGaAs.EFFECT: invention has increased the value of the photocurrent and the efficiency.6 cl, 4 dwg

Activation of photopolymerization using near ir-radiation // 2611395
FIELD: chemistry.SUBSTANCE: invention relates to additive technology, biotechnology and medicine, namely to a method for producing 3-dimensional structures within polymerized material. Photoactivator irradiated using continuous source of deep-penetrating near IR-radiation, which initiates polymerization process by nonradiative resonance energy transfer from nanoparticles to photoinitiator, where the photoinitiator is a molecular complex comprising blue and UV-emitting anti-stokes luminescent upconverting nanoparticles NaYF4:Yb3+, Tm3+. The invention can be used for production of tissue-engineered structures, matrices for individual bioactive implants and artificial organs.EFFECT: use of photoactivator instead of cytotoxic UV radiation to produce polymer compositions within cell culture systems.3 dwg

Preparation process of medicinal plants nanocapsules with relaxing effect in konjac gum // 2611366
FIELD: nanotechnology.SUBSTANCE: production method of medicinal plants nanocapsules with spasmolytic activity is that 10 ml of valerian tincture is added to a suspension of konjac gum in petroleum ether containing 3 g or 1 g of konjac gum in the presence of 0.01 g E472s as a surface-active substance during agitation of 1,300 rpm, the obtained suspension is filtered and dried at room temperature.EFFECT: nanocapsules manufacture process simplification and acceleration and weight yield increase.3 ex, 1 dwg

Bistable memory cell based on single-layered nanostructure // 2611094
FIELD: physics, computer engineering.SUBSTANCE: to create integrated circuits with memory components of nanometer dimensions. The essence of invention is that the bistable memory cell based on a single-layer nanostructure with horizontally oriented strata comprises a dielectric substrate, the first and the second logic transistors, the first and the second load diodes placed on the dielectric substrate, and is made nanoscale with stepped profile where the working transitions "base-emitter", "base-collector" of two transistors are surface transitions with low power consumption and the lowest transition surfaces.EFFECT: possibility is provided to reduce power consumption while increasing the performance by reducing parasitic capacitances of working transitions.8 dwg

ethod of personalised selection of dental implant based on titanium oxide alloys // 2611013
FIELD: medicine.SUBSTANCE: method of personalised selection for patient of dental implant based on titanium oxide alloys is realised under in vitro conditions by means of test-system of activation of basophils for estimation of allergic reaction to tested material by method of calculation of destroyed basophils in patient's blood. Nanoparticles are preliminarily isolated from the surface of dental implant by incubation in water at temperature 37.2°C for 5 days, after which obtained supernatant is exposed to 35 Hz ultrasound for 10-20 minutes, with the following addition of patient's venous blood and monoclonal antibodies to molecules CD203 and CD294 and re-incubation for 15 minutes. Activation of basophils or its absence is fixed by means of test-system by method of flow cytofluorometry. Obtained results are used to calculate index of activation of basophils, and if obtained ratio of quantity of positive basophils of tested sample to quantity of negative basophils of control sample is lower than 1 or equals 1, said implant is recommended for application.EFFECT: application of the method makes it possible to predict and eliminate possible allergic reactions by patient's immune system in postoperative period and, therefore, realise individual selection of various alloys of metals and prevention of inflammatory complications in delayed period.1 tbl, 2 ex

Coaxial cable with nanotube insulation // 2610900
FIELD: electrical engineering.SUBSTANCE: invention relates to electrical engineering and can be used in designs of coaxial communication cables. In a coaxial cable with a nanotube insulation having central metal conductor (1), polymer insulation layer (2) located on it and external metal conductor (3), the polymer insulation of which is made of n polymer layers of nanotubes (4, 5, 6), herewith each layer of the polymer insulation is characterized by a different diameter of nanotubes.EFFECT: invention provides designing coaxial cables with an insulating material for any dimensions of coaxial pairs with a required low value of relative dielectric permeability.1 cl, 1 dwg
Welding composite wire for arc welding of pipe and crypto-resistant steels // 2610374
FIELD: technological processes.SUBSTANCE: invention can be used during arc welding and building up of metal parts in a protective gas medium and under flux. Wire comprises a metal rod and an electrolytically deposited nanocomposite coating, including a metal matrix with nanoparticles distributed therein. Said coating contains nanoparticles of fluoride or a mixture of rare-earth metal fluorides and nanoparticles of hexaboride or a mixture of alkali-earth metal hexaborides at following volume ratio of matrix and nanoparticles in coating, %: metal matrix 55–96, nanoparticles of fluoride or a mixture of fluorides 3–20, nanoparticles of hexaboride or a mixture of hexaborides 1–25. Rare-earth metal fluoride is selected from a group consisting of lanthanum fluoride, yttrium fluoride and cerium fluoride. Alkali-earth metal hexaboride is selected from a group, including calcium hexaboride, barium hexaboride and strontium hexaboride.EFFECT: welding wire increases strength, ductility and impact strength of welded joints of pipes and crypto-resistant steels of high strength.3 cl, 6 tbl

Growth unit of nanoheteroepitaxial structures with quantum dots from liquid phase // 2610050
FIELD: nanotechnology.SUBSTANCE: method is performed by making a reactor in the form of cross , inside the horizontal part of which, along its axis, the cartridge with containers is moving, where it is disposed various solution-melts, containers with the bottom layers and containers for storing nanostructures for their alternative coinciding with the cylinder. The rod passes in the vertical part of the reactor through the center of the reactor bottom cover, it moves containers from the cartridge to the lower base of the cylinder for fixing the bottom layers, while creating a vacuum inside the cylinder, followed by separation of the nanostructures to the container, when the hydrogen coming inside the cylinder. Moving of the containers from the cartridge by means of the rod, results in a growth chamber creation, formed by the working surface of the bottom layer, the inner surface of the lower base of the cylinder and the surface of the saturated solution-melt, passing through the holes of the floating plate of the specified shape with different configuration of holes. The rod passes through the center of the reactor upper cover inside the cylinder, it moves the coolant from the heat container with constant temperature and the heat container in the form of a ring with a pulsed induction heating up to the rear bottom layer surface.EFFECT: invention allows to increase the capacity of the plant, to improve the multiple positioning of the bottom layer, while increasing its diameter, to provide the epitaxial growth not only of the nanolayers, arrays of quantum dots, but also ohmic contacts of different configurations.1 dwg
Channel type reactor-converter with molten fuel // 2609895
FIELD: nuclear energy.SUBSTANCE: invention relates to nuclear power engineering, particularly, to developing a reactor-converter with molten uranium-plutonium fuel operating with an average reproduction factor high enough for fuel self-sufficiency. Reactor-converter is fed with a grade mixture of crude and fissile isotopes of uranium and plutonium with the content of fissile isotopes not more than that in the spent nuclear fuel (SNF) of light-water reactors, as well as with waste uranium, so the reactor does not require productions of the external fuel cycle. Use of polysilazane as the heat carrier improves neutron-physical characteristics of the fuel cycle, increases the reproduction rate. Channel type reactor-converter with the molten fuel consists of a low pressure housing with a core inside consisting of vertical columns of the side reflector and internals with installed in central holes of the internals columns process channels (PC) for the heat carrier passage and accommodating fuel assemblies (FA) with fuel elements (FE), the low-pressure housing is filled with the heat carrier, in which the core is submerged, the inner volume of the FA FE arranged in the process channels is filled with a liquid metal uranium-plutonium fuel, the FE upper ends are combined in the FA fission products accumulator, the FE ends are made connected with the FA cavity, the latter is made connected with an open cavity above the fuel being with it under common pressure, herewith the low-pressure housing is made from a high-strength titanium alloy, for example, of mark VT3-1, VT6, VT6S, VT14 or VT22, protected from inside with a nanoporous boron nitride-based composite, and the heat carrier is based on polysilazane of the following stoichiometric composition: Si315N3C12D22. FA fission products accumulator comprises a nanoporous sorption material for removal of gaseous fission products and fission products with high steam elasticity, for example, based on SiAlON at the micro pores dispersion within the range of 5–15 Å, and the material absorbing fission products with low steam elasticity.EFFECT: fuel self-sufficiency of the reactor.8 cl, 1 dwg

Resistive sensor with transparent conductive electrode // 2609793
FIELD: chemistry.SUBSTANCE: conductive electrode on polymer substrate comprises a surfactant with vertically aligned molecules and a film of carbon nanotubes oriented through their interaction with the surfactant.EFFECT: improved transparency and conductivity of the electrodes.3 cl, 3 dwg
Production method for nanowire catalyst // 2609788
FIELD: nanotechnologies.SUBSTANCE: auxiliary layer, in which groove rows are formed of nanometer depth with vertical walls, is applied to a supporter; the layer of a catalyst material of nanometer thickness, on the top of which a photoresist mask with a pattern of narrow strips located aslant the grooves is formed, is applied; the layer of the catalyst material is removed by means of anisotropic etching up to the auxiliary layer retaining it on the side walls of the grooves and under the mask. The mask is removed. Supporters with nanowires are orderly allocated in a reactor.EFFECT: increasing of end product output, consumption reducing of expensive catalyst material, and reducing of gas-dynamic resistance of the reactor.4 cl, 1 dwg
Pneumatic generator of liquid aerosol particles and aqueous solution of hydrophobic compounds of vegetal origin in form of aerosol of submicron particles, obtained using said generator // 2609734
FIELD: medicine.SUBSTANCE: group of inventions relates to pneumatic generators of liquid aerosol submicron drug particles and composition of said agent for use in medicine for treating nasopharyngeal diseases, bronchi and lungs. Generator includes following elements. Axially symmetric body of spray chamber with mouthpiece, union with outlet hole in end in form of nozzle for supply of air from compressor, located in spraying chamber body coaxially with it. Cap with outlet hole in end in form of nozzle has longitudinal projections-partitions on inner channel surface and it is located on union with formation of dispersing nozzle and radial vertical channels, connected with cap outlet hole on one side and with inner volume of spraying chamber at its bottom on the other side. Unit of sprayed substance preset temperature maintenance with thermal relay and baffle plate for removal of aerosol coarse particles. Baffle plate for removal of aerosol coarse particles is installed in body of spraying chamber and is made in form of horizontal tube, in cavity of which through hole in side wall cap end passes, attached with detachable elements with edges of hole of said tube for adjusting of gap between cap and tube inner side surface of baffle plate. Agent, based on aqueous solution of powdery mixture of flavonoids of dihydroquercetin and arabinogalactan of siberian larch or Gmelin larch in ratio from 1:5 to 1:20 is prepared in form of particles with submicron median diameter of 358–670 nm in aerosol liquid using said generator of particles. Quantitative content of components is as follows, wt% powdered mixture of flavonoids of dihydroquercetin and arabinogalactan of siberian larch or Gmelin larch in ratio from 1:5 to 1:20 – 0.05–5.0; water – the rest up to 100 %.EFFECT: inventions provide higher dispersion of obtained liquid aerosol drug to submicron particle size, their deep penetration into respiratory tract of human body and higher pharmacological activity of components of agent.3 cl, 4 dwg, 3 ex, 4 tbl

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 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
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
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

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

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

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

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
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

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

Welding wire with nanocomposite coating for welding high-strength steels // 2603936
FIELD: metallurgy.SUBSTANCE: invention can be used during arc welding and building up of metal parts from high-strength steels in atmosphere of protective gas and under flux. Wire consists of metal rod with nanocomposite coating, consisting of a metal matrix and nanosize particles of fluorides and borides of rare-earth metals with particle size less than 1,000 nm, at following volume ratio of matrix and nanosized particles in coating, %: metal matrix 55-96, nanosized particles of fluoride or a mixture of rare-earth metal fluorides 3-20, nanosized particles of boride or a mixture of rare-earth metal borides 1-25.EFFECT: welding wire increases strength, ductility and impact strength of welded joints of high-strength steels.3 cl, 6 tbl

Tooth paste with nanodiamonds // 2603464
FIELD: hygiene.SUBSTANCE: invention relates to toothpaste containing a thickening agent, filler, moisturizer, abrasive and a base - purified water, and as a moisturizing component use glycerin, as a thickener - monocrystalline cellulose, and as a filler - zinc oxide, as an abrasive - nanodiamonds, components are taken in the following ratio, wt%: thickener - microcrystalline cellulose 17.91-17.56; filler - zinc oxide 17.91-17.56; moisturizer - glycerine 11.94-11.70; base - purified water 51.74-50.68; abrasive - nanodiamonds 0.5-2.5.EFFECT: invention provides creation of toothpaste comprising an abrasive with a controlled degree of abrasion, having favorable properties when used in oral cavity and providing high cleaning capacity and indifference relative to other components of a tooth paste.1 cl

?-form zinc-phthalocyanine nanowires having enhanced water solubility and water dispersibility, composite of an ?-form zinc- phthalocyanine nanowire/phenothiazine, and method for preparing thereof // 2602698
FIELD: medicine.SUBSTANCE: present invention relates to α-form zinc-phthalocyanine nanowires (ZnPc NWs) with increased water solubility and water dispersibility, to a composite of α-form zinc-phthalocyanine nanowire/phenothiazine, a method for preparing the same and a photosensitizer comprising the same and a pharmaceutical composition comprising the same for preventing or treating cancers. Obtained using the disclosed method α-form zinc-phthalocyanine nanowires have increased solubility and dispersibility in water in a concentration of 100 to 140 mg/L.EFFECT: since disclosed nanowires or the composite exhibit photothermal and photodynamic traits in single molecule, they are very useful for the development of a multifunctional molecular system and can also be usefully applied to light therapy of cancers due to their good light therapeutic effects; also, the composite of alpha-form zinc-phthalocyanine nanowire/phenothiazine itself can exhibit fluorescence to facilitate the introduction of an imaging system, so that diagnosis and treatment can be simultaneously performed using a single substance.11 cl, 6 ex, 33 dwg

Agent for targeted delivery of drugs in cells and its application method // 2602299
FIELD: medicine.SUBSTANCE: invention relates to medicine, namely to agent for targeted drug delivery into cells. Agent for targeted drug delivery into cells contains halloysite nanotubes of natural origin, which are washed out in ethanol and water, placed into container with liquid drug, introduced into vacuum desiccator, where nanotubes' cavities are filled with drug. Nanotubes, filled with drug are removed from desiccator and repeatedly washed out in water, dried, grinded, introduced into solution of enzymatic-dehydrated substance - dextrin. Container with solution of enzymatic-dehydrated substance - dextrin and drug loaded nanotubes is repeatedly placed in vacuum desiccator and left therein, then it is removed from desiccator and washed out from excess dextrin.EFFECT: invention implementation allows to create biocompatible, nanosized mean for targeted delivery of medicinal preparations, providing activation of preparation only in case of ingress into cell and its selective accumulation inside cells.1 cl, 2 dwg

Nanofilter // 2602050
FIELD: tobacco industry.SUBSTANCE: invention relates to a cigarette filter which is enclosed in an envelope, located at end of paper cartridge with tobacco or tobacco mixture. In envelope there is a filter element made of microporous synthetic material or from porous filter paper. Between filter element and tobacco there is a stack which forms a mesh filter, assembled from disc plates cut from fabric. On first part of disc plates there is a filter nanolayer of carbon. At second middle part of plates there is a silver nanolayer, and at third part of plates there is a nanolayer of rare-earth metals. Furthermore, disc filter plates are assembled into a stack which forms a mesh filter, length of which is less than diameter of filter envelope and length of microporous filter element.EFFECT: proposed filter increases efficiency and improves consumer properties of cigarettes.1 cl, 7 dwg

ethod for efficient increase of broiler chickens productivity during combined use of intramuscular injection of nano-iron and arginine in ration // 2601812
FIELD: agriculture.SUBSTANCE: invention relates to agriculture, namely to method of efficient increase of broiler chickens productivity during combined use of intramuscular injection of nano-iron and arginine in ration. Method involves intramuscular injections in 15- and 29-day age of liosols of iron nanoparticles with particle size of 80.5±5.5 nm in dose of 2 mg/kg of live weight together addition of arginine in ration in 15-day age in amount of 10 g per kg of ration.EFFECT: use of invention provides higher productivity of chickens.1 cl, 2 dwg, 4 tbl

ethod of producing alkyl esters of fatty acids // 2601741
FIELD: technological processes.SUBSTANCE: invention relates to a method of producing alkyl esters of fatty acids (AEFA) and can be used in petrochemical, fuel and other industries. Method of producing alkyl esters of fatty acids is carried out by re-esterification reaction of vegetable oil with an alkylating agent methanol in supercritical carbon dioxide medium while heating in presence of immobilised lipase, where matrix of immobilised lipase used is magnetically separated iron-containing nanoparticles with modified 3-(aminopropyl)-triethoxysilane surface, molar ratio of vegetable oil to methanol ranges from 1:3 to 1:6, re-esterification reaction is carried out at temperature from 40 to 60 °C and pressure of carbon dioxide from 10.0 to 20.0 MPa for 3-5 hours in a neutral medium.EFFECT: technical result is improvement of manufacturability, efficiency and stability of selective production of AEFA.1 cl, 1 tbl, 1 ex

ethod of measuring magnetic field // 2601734
FIELD: physics.SUBSTANCE: invention relates to methods of measuring magnetic field and includes affecting a silicon carbide crystal of hexagonal or rhombic polytype containing spin centers with the main quadruplet spin state, along its crystallographic axis of symmetry with focused laser radiation, low-frequency alternating magnetic field and permanent magnetic field. Herewith luminescence intensity is measured of the spin centers with the main quadruplet spin state at different values of constant magnetic field. Within the luminescence intensity change area read is the first curve of dependence of change of the luminescence intensity on constant magnetic field value and calibrated is the first curve by known value of the magnetic field in the flex point of the first curve. Then placed on the said silicon carbide crystal surface is an investigated sample and the luminescence intensity is measured of the spin centers with the main quadruplet spin state at different values of constant magnetic field. Within the luminescence intensity change area read is the second curve of dependence of change of the luminescence intensity on constant magnetic field value and the value of magnetic field created by the analyzed sample in the focal point of laser radiation is determined by the value of the horizontal shift of the second curve relative to the first curve.EFFECT: technical result is the increase of accuracy of measurements, as well as elimination of heating of the analyzed object.4 cl, 4 dwg

Thermally stable pressure sensor based on nano-and micro-electromechanical system with membrane having rigid centre // 2601613
FIELD: measuring equipment.SUBSTANCE: invention relates to measurement equipment, in particular, to sensors for measuring pressure of liquid and gaseous media under impact conditions of transient temperatures of the medium. Thermally stable pressure sensor based on nano-and micro-electromechanical system includes a housing, wherein nano-and micro-electromechanical system (namems) is installed, consisting of elastic element - membrane with rigid centre, with a peripheral base in the form of revolution shell with annular groove. Heterogeneous structure of thin films of materials is formed on the membrane, in which contact pads are located, resistance strain gauges of identical tensoelements connected by jumpers included in the measuring bridge. Centers of circular and radial tensoelements are located on a circle, radius of which is defined by the proportion: r(x)=(0.744 - 0.0476·cos(4.806x) - 0.07482·sin(4.806x) - 0.01826·cos(9.612x) + 0.005405·sin(9.612x))·rm, where x=r0rm is the ratio of r0 radius of the rigid centre to rm membrane radius, wherein the radius of the peripheral base is defined by the proportion: ru= 1.28rm.EFFECT: invention technical result is increase in accuracy by increasing the resistance to thermal shock impact at simultaneous reduction of non-linearity of bridge measuring circuit of the sensor and high sensitivity provision.1 cl, 6 dwg
 
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