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)

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

ethod of producing nanocapsules of medicinal plants with antispasmodic action in carrageenan // 2600890
FIELD: pharmaceutics.SUBSTANCE: invention relates to pharmaceutics. Method of producing nanocapsules of medicinal plants is described. Carrageenan is used as shell of nanocapsules. According to method according to invention 10 ml of valerian infusion are added to suspension of carrageenan in diethyl ether, containing 1 g of carrageenan, in presence of preparation E472c and mixed. Obtained suspension of nanocapsules is filtered and dried.EFFECT: invention provides simpler and faster process of producing nanocapsules, reduces losses during production thereof (increased mass output).1 cl, 1 dwg, 4 ex

ethod of producing nanocapsules of green tea extract in agar-agar // 2600862
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, medicine and food industry. Method of producing nanocapsules of green tea extract is characterized by that green tea extract is added to agar-agar suspension in sulfuric ether in presence of 0.01 g 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, wherein ratio nucleus:shell in nanocapsules makes 1:3, 1:1, 1:5 or 5:1.EFFECT: technical task of invention is to simplify and accelerate process of production of nanocapsules and increase mass output.1 cl, 5 ex, 1 dwg

ethod of producing medicinal plants nanocapsules with cardiotonic effect // 2600861
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, medicine and food industry. Method of producing nanocapsules of herbs with cardiotonic effect is characterized by that hawthorn tincture is added to suspension of sodium carboxymethyl cellulose in petroleum ether 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, ratio nucleus:shell in nanocapsules makes 1:3, 1:1, 3:1, 5:1 or 1:5.EFFECT: technical task of invention is to simplify and accelerate process of production of nanocapsules and increase mass output.1 cl, 1 dwg, 6 ex

ethod of producing nanocapsules of medicinal plants having immunostimulating effect in konjac gum // 2600441
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, medicine and food industry. Method of producing nanocapsules of medicinal plants having immunostimulating effect, is characterised by that, 5 ml of echinacea tincture is added to a suspension konjak gum in hexane, containing 3 g or 1 g konjak gum in presence of 0.01 g of E472c preparation as a surfactant while mixing at 1,300 rpm, obtained suspension is filtered and dried at room temperature.EFFECT: technical task of invention is to simplify and accelerate process of production of nanocapsules and increase mass output.1 cl, 1 dwg, 3 ex

ethod of producing polymer microspheres containing quantum dots // 2600108
FIELD: chemistry.SUBSTANCE: present invention relates to a method of producing polymer microspheres containing quantum dots. Described is a method of producing polymer microspheres containing quantum points, comprising preparing a solution of quantum dots in an organic solvent containing a cation-active surfactant, which is alkyldimethylethylbenzylammonium chloride in amount of 1-2 wt%, with concentration of quantum dots in solution of 0.1-1.0 g/l, followed by addition to solution of quantum dots of polymer microspheres of polystyrene or polymethyl methacrylate, at ratio of polymer: solution of quantum dots, equal to 1:1, obtained mixture is subjected to ultrasonic treatment, then held for 2-6 hours at room temperature and dispersed in C2-C4-aliphatic alcohol with cation-active surfactant which is alkyldimethylethylbenzylammonium chloride, taken in amount of 1-2 wt%, held for 5-15 minutes, centrifuged for separation of formed precipitate, consisting of polymer microspheres containing quantum dots.EFFECT: technical result is high aggregative stability of polymer microspheres and quantum dots at all stages preceding immobilisation into polymer microspheres, and increased percentage of quantum dots, immobilised into polymer microspheres.3 cl, 3 ex, 1 dwg

ethod for producing adaptogen nanocapsules // 2599838
FIELD: nanotechnology.SUBSTANCE: invention relates to encapsulation. Described is a method of producing nanocapsules of adaptogens. Envelope of nanocapsules used is sodium carboxymethyl cellulose. According to method, according to invention adaptogen extract selected from eleuterococcus, ginseng, Chinese magnolia vine, rhodiola rosea, aralia, is added to a suspension of sodium carboxymethyl cellulose in methanol in presence of an E472c preparation with weight ratio of core: shell 1:3 or 5:1 respectively. Then mix and add butylchloride. Obtained suspension of nanocapsules is filtered and dried.EFFECT: invention simplifies and speeds up process of producing nanocapsules, reduces losses during production thereof (high mass output).1 cl, 1 dwg, 8 ex

Use of indocyanine green as a marker of nanoparticles // 2599488
FIELD: biotechnology.SUBSTANCE: invention relates to biotechnology and is intended for use of indocyanine green as nanoparticles optical mark containing medicinal substance of protein nature. Indocyanine is used as a nanoparticles matrix marker based on polylactic acid or copolymer of polylactic and glycolic acid with average size of not more than 500 nm, containing substance of protein nature. Using the invention enables to study internalization of nanoparticles (IN) and encapsulated active substance in parallel, without impacting on the optical properties of each mark - marked protein or peptide and marked IN with cells, their intracellular distribution.EFFECT: marking of IN allows to study the pharmacokinetic parameters of IN, their bio-distribution and their safety in parallel with the active substance, that is important for introduction and wider application of IN in vivo.1 cl, 6 tbl, 12 dwg, 5 ex

ethod of producing nano capsuled potassium iodide in sodium alginate // 2599006
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology and can be used in pharmaceutics. Method of producing nano capsuled potassium iodide in sodium alginate is as follows: potassium iodide while stirring at rate of 1200 Rev/min is added to solution of sodium alginate in petroleum ether in presence of E472s as surfactant, precipitator benzene is added and after filtration is dried at room temperature.EFFECT: method is easy to implement and provides high output of ready product.1 cl, 3 ex, 2 dwg

ethod of producing nanocapsules of adaptogens in sodium alginate // 2598748
FIELD: chemistry.SUBSTANCE: invention relates to method of producing adaptogenes nano capsules in sodium alginate, wherein active substance while stirring is dispersed into sodium alginate suspension in isopropanol in presence of E472 preparation as surfactant, settler is then added, and precipitate is dried at room temperature, characterised by that active substance is represented by vegetal origin adaptogens: extracts, eleuterococcus or ginseng, or chinese magnolia vine, or rhodiola rosea or Manchurian Aralia, as settling agent ethyl acetate is used in ratio 1:1-10 of adaptogen:ethyl acetate, while mixing is carried out at rate of 1,300 rpm.EFFECT: obtaining adaptogens nano capsules in sodium alginate.1 cl, 9 ex, 4 dwg

odifier for preparing nanostructured composite materials and method for producing modifier // 2598676
FIELD: technological processes.SUBSTANCE: invention can be used for producing cathode materials for lithium-ion batteries, paints, primers, adhesives, concrete, cellulose materials. Modifier for preparing nanostructured composite materials comprises single-wall, and/or double-wall, and/or multi-wall carbon nanotubes, uniformly distributed in the volume of solid ethylene carbonate. To obtain said modifier ethylene carbonate is heated to melting temperature, carbon nanotubes is added. Obtained mixture is exposed by ultrasound for uniform distribution of nanotubes in amount of ethylene carbonate and cooled to temperature of ethylene carbonate hardening. Dispersant from: polyvinyl pyrrolidone, or polyvinyl acetate, or polyvinyl alcohol, or block-copolymer of vinylpyrrolidone and vinyl acetate, or block-copolymer of vinylpyrrolidone and vinyl caprolactam can be added in molten ethylene carbonate. Carbon nanotubes can be preliminary cleaned and/or functionalized.EFFECT: produced modifier in the form of dispersion of carbon nanotubes is stable during storage for a long time with preservation of all properties.7 cl, 2 dwg, 6 ex
Non-combustible composite material and binder for production thereof // 2598675
FIELD: chemistry.SUBSTANCE: group of inventions relates to non-combustible composite materials for making non-combustible sheets, including laminar ones, non-combustible structural materials, including the ones in the form of shaped sections, non-combustible moulded articles, etc., which can be used in aircraft, ship and automotive industry, construction, in infrastructure projects, as well as to a binder for producing the non-combustible composite material. Described is a non-combustible binder for making a composite material containing metal oxide and a phosphate bond, wherein the phosphate bond is selected from a group of aluminium, chrome aluminium, boron aluminium, and the binder contains an organic resin selected from a group of epoxy-diane resin, phenol-formaldehyde resin and urea-formaldehyde resin with the following ratio, weight parts: aluminophosphate, chrome-aluminophosphate or boron-aluminophosphate binder 70.6-60.0; metal oxide 20.0-11.8; epoxy-diane resin, phenol-formaldehyde resin and urea-formaldehyde resin 20.0-15.0.EFFECT: development of a non-combustible composite material based on an organomineral polymer matrix with improved plasticity and inflammability, as well as a binder for its production.4 cl, 3 ex

ethod of extracting ions of heavy metals from aqueous solutions // 2598483
FIELD: technological processes.SUBSTANCE: invention relates to methods of extracting ions of heavy metals by sorption on natural cellulose-containing sorbents from solutions of different compositions and can be used to improve membrane and sorption technologies, in water treatment, in techniques for recycling ions of heavy metals from aqueous solutions and waste water of different nature. Method of extracting ions of heavy metals from aqueous solutions includes contacting of the solution at room temperature for 1-20 minutes with modified polymer sorbents based on cellulose at the solution/sorbent module equal to 50-200. Herewith the sorbents are modified by applying carbon nanotubes in ultrasonic effect with the working frequency of 22 or 44 kHz at room temperature for 2-10 minutes in an aqueous solution containing 3-12 % of polyacrylic acid and 0.1-1 % of nanotubes by weight of the sorbent at the solution/sorbent module of 10, followed by treatment of the sorbents in the solution of acrylic acid in presence of an initiator at the temperature of 60-90 °C while stirring for 30-90 minutes. Herewith the sorbents treatment with applied carbon nanotubes is performed in a solution containing 15-25 % of acrylic acid and 1.5-2.5 % of ammonium persulphate initiator by weight of the sorbent at the solution/sorbent module of 10, followed by washing, pressing and drying to the humidity of 8-14 %.EFFECT: invention provides higher degree of extracting ions of heavy metals and lower sorbents treatment temperature.1 cl, 1 tbl, 5 ex

ethod of producing nanocapsules of kinetin in sodium alginate // 2598342
FIELD: nanotechnology.SUBSTANCE: invention relates to nanotechnology, in particular, to plant growing, and can be used for producing nanocapsules of kinetin. Method is characterised by that as the envelope of the nanocapsules is used a sodium alginate in weight ratio nucleus: shell is 1:1 or 1:3, or 5:1. When producing encapsulating particles by method of non-solvent addition, the kinetin is added in portions in sodium alginate suspension in isopropanol in the presence of an E472c with mixing and slowly added dropwise butyl chloride as precipitating agent, the suspension was filtered, washed with butyl chloride and dried.EFFECT: invention allows to simplify and accelerate the process of producing nanocapsules and increase the output by mass.1 cl, 4 ex, 1 dwg

ethod of determining composition of solid solution // 2597935
FIELD: chemistry.SUBSTANCE: invention can be used for assessment of composition of two-component solid solutions in nanodispersed materials, including, in particular, nano-sized particles: Pt-Ru, Pt-Rh, Fe-Co, Pd-Ru, Pd-Rh, Pd-H, Hf-O. Invention consists in that disclosed method of determining composition of a two-component solid solution involves determining by X-ray structural analysis lattice constant of solid solution and lattice constant of pure solvent with subsequent determination of content of dissolved element based on relationship thereof with lattice constant. For determining composition of solid solution in nanodispersed material a pure solvent is first obtained in a nanostate using a method which was used to obtain said solid solution. Dependence of content of dissolved element in nanodispersed material on lattice constant is established by calculating change of lattice periods x by formula: a0-arast,= x, where a0 is lattice constant of solvent in a coarse-crystalline state, arast is lattice constant of solvent in nanostate, and correcting dependence of content of dissolved element on lattice constant, set for coarse-crystalline materials by value x. To determine content of dissolved element based on established dependence, difference in lattice constants of solid solution and pure solvent Δa is used, which is determined by formula: Δa = arast-atr, where atr is lattice constant of solid solution in nanodispersed material.EFFECT: technical result is possibility of evaluation of composition of solid solutions in nanodispersed materials.1 cl, 12 dwg, 1 tbl, 7 ex.
Adhesive composition (versions) // 2597919
FIELD: chemistry.SUBSTANCE: invention relates to adhesive compositions based on caoutchouc used in textile industry. Adhesive composition contains dichloromethane, synthetic caoutchouc, natural rubber, synthetic rubber. Additionally contains an auxiliary organic solvent and an antibacterial agent in the form of silver nanoparticles, a fungicidal agent in the form of nanoparticles of copper and zinc, an as an activator and a catalyst there are nanoparticles of gold and iron, herewith the nanoparticles are coated with a surfactant or high-molecular organic compounds selected from a group of polyvinyl pyrrolidone, polyethylene glycol or polyvinyr alcohol, at the following ratio: main organic solvent selected from a group of benzene, isooctane, acetone or dichloromethane; auxiliary organic solvent selected from a group of hexane, heptane, toluene, pentane or nefras; synthetic caoutchouc; natural rubber; synthetic rubber; silver nanoparticles; copper nanoparticles; zinc nanoparticles; gold nanoparticles; iron nanoparticles. Herewith the nanoparticles may be coated with an anionic or cationic or nonionic surfactant, metal nanoparticles amount is not more than 15 mcg per 1 kg of the adhesive composition.EFFECT: invention provides longer service life and prevention of development of pathogenic microflora on textile products during their operation.6 cl, 6 ex

Diffraction periodic microstructure based on porous silicon // 2597801
FIELD: chemistry.SUBSTANCE: invention relates to diffraction periodic microstructures for visible range, based on porous silicon. In diffraction periodic microstructure based on porous silicon, comprising a substrate, made of monocrystalline silicon with a diffraction periodic microstructure, formed diffraction periodic microstructure based on porous silicon comprises ion-synthesised metal-containing nanoparticles, dispersed in surface region of substrate at layer thickness from 10 to 200 nm with metal concentration of 2.5·1020-6.5·1023 atoms/cm3.EFFECT: technical effect consists in creation of a diffraction periodic microstructure based on porous silicon with different metal-containing nanoparticles.1 cl, 20 dwg

Nanocomposite electro-contact material and method for production thereof // 2597204
FIELD: physics.SUBSTANCE: invention relates to electrical engineering and nanotechnology, in particular, to a nanocomposite material based on copper (Cu) for production of power arcing contacts in switches of powerful electric circuits and vacuum arc-quenching chambers and production method thereof. Nanocomposite electro-contact material on copper basis consists of a partially disordered copper-based matrix, in which clusters of high-melting particles sized less than 5 nm are distributed, herewith the content of high-melting particles ranges from 20 to 80 wt%. High-melting particles used may be particles of chromium or tungsten or molybdenum. Method of producing a nanocomposite electro-contact material involves mechanical treatment of mixes of metals in a high-energy planetary ball mill followed by solid-phase sintering of the produced activated mixture. High-energy treatment is performed in argon atmosphere at the weight ratio of balls and initial powders of 20:1-40:1, the planetary mill planetary disc rotation speed of 694-900 rpm and the duration of treatment not more than 90 minutes. Sintering the obtained nanocomposite particles with the size of refractory metal less than 5 nm is performed by spark plasma sintering method, herewith vacuum is created in the chamber or an inert gas atmosphere and through the sintered sample the pulse electric current is passed of 1,000-5,000 A under the load up to 50 MPa. Samples sintering temperature does not exceed 1,000 °C at the process duration of not more than 15 minutes.EFFECT: provided are higher hardness, reduced porosity and specific electric resistance of samples.3 cl, 1 dwg, 3 ex

edical material and hollow fibre membrane module // 2596790
FIELD: medicine.SUBSTANCE: described are medical material and device for blood purification. Device is obtained by incorporating a medical material, which contains hydrophilic copolymer present on surface contacting blood, where 3/mcm2 or less of particulate protuberances of 50 nm or higher particle diameter are present on said blood-contacting surface, and relaxation time at -40 °C of water adsorbed to hydrophilic copolymer is 5.0×10-10 seconds to 2.5×10-8 s.EFFECT: medical material and device have high antithrombotic properties and high safety.10 cl, 7 dwg, 3 tbl, 18 ex

ethod of producing creatine nanocapsules in gellan gum // 2596485
FIELD: nanotechnology.SUBSTANCE: invention relates to a method of producing nanocapsules, and describes a method of producing creatine nanocapsules, characterized by the fact that gellan gum is used as an enclosure, and creatine is used as a core, in the method creatine is dispersed into suspension of gellan gum in hexane in the presence of surface-active agent e472c, wherein weight ratio core: enclosure on conversion to dry substance is 1:1 or 1:3, then, while stirring ethyl acetate is being added, 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, 1 dwg, 3 ex

ethod of producing nanocapsules of antispasmodic medicinal plants // 2596476
FIELD: medicine.SUBSTANCE: invention relates to a method of producing nanocapsules of antispasmodic medicinal plants, characterised by the fact that sodium alginate is used for the shell, and antispasmodic medicinal plants are used in the core. In the exercise of this method, antispasmodic medicinal plant tincture is stirred into a sodium alginate suspension in benzene in the presence of glycerol ester with one or two molecules of edible fatty acids and one or two molecules of citric acid, then a hexane is added. Resulting suspension is filtered and dried at room temperature, wherein the nucleus to shell ratio is 1:3 or 1:1.EFFECT: technical result consists in simplifying and accelerating the process of producing nanocapsules and high mass output.1 cl, 3 ex, 1 dwg

ethod for production of textile material containing nano- and microencapsulated biologically active substances of prolonged release(versions) // 2596452
FIELD: textile.SUBSTANCE: invention is designed to produce intensified and prolonged therapeutic action of biologically active substances on a patient's skin in affected areas when treating bedsores and burns. Said technical result is achieved due to treating textile material with nano- and microemulsion with included encapsulated biologically active substances in the form of natural sea-buckthorn or silver fir oil. To prepare nano-and microemulsion the following components are used, g/l: anionic surfactant 2-5, nonionic surfactant 0.1-1.0, natural sea buckthorn (fir) oil 1-10, cationic polyelectrolyte 3-7, water up to 1 l, nano- and microcapsules are affixed on material surface by additional impregnation with solution of anionic polyelectrolyte.EFFECT: produced textile material is used for production of anti-decubital and fluidized articles.6 cl, 1 tbl

Polymeric nanocomposition for effective protection against uv radiation // 2596041
FIELD: chemistry.SUBSTANCE: invention relates to polymeric nanocompositions intended for obtaining film materials that provide protection against UV radiation and photochemical ageing. Composition contains polyolefin or a olefin copolymer and UV-absorber. UV-absorber is nanosized silicon carbide that is single-phase polycrystalline and consisting of synthetic silicone carbide (SiC) with structure of moissanite polytype 6H with average particle size 34±3 nm in the amount of 0.1-1.5 wt%. Polymeric nanocomposition enables to obtain film materials with wide spectral range of absorption wave UV radiation (200-420 nm).EFFECT: dangerous UV radiation range (200-290 nm) is absorbed at 100-90 %.1 cl, 1 tbl

Thermoelectric heat pump with nanofilm semiconductor branches // 2595911
FIELD: heating.SUBSTANCE: invention relates to heat exchange systems. It increases the efficiency of thermoelectric heat pump by the decrease in emission of parasitic Joule heat in semiconductor branches and development of conditions for extra thermal effect between hot and cold junctions made of different metals. This results from making the semiconductor p- and n-type braches as nanofilms with, in fact, zero resistance of current flowing therein owing to the high ratio between the branch cross-section and height. Production of the hot and cold junctions of two metals with different thermoelectric properties allows the conversion of parasitic thermoelectric effects between metal junctions and semiconductors into additional cooling.EFFECT: possibility to develop heat pumps of higher efficiency at decreased sizes, particularly, sandwiched heat pumps composed by several stages.1 dwg

ethod of producing nanocapsules of green tea extract // 2595834
FIELD: nanotechnology.SUBSTANCE: invention relates to encapsulation. Method of producing nanocapsules of green tea extract id described. Envelope of nanocapsules used is konjak gum. According to the method according to the invention the specified extract is added to suspension of konjak gum in butanol in the presence of the preparation E472c as a surface-active substance, with weight ratio of nucleus: shell 1:3, or 1:1 or 1:5 respectively. Then they are mixed and 1,2-dichloroethane is added. Obtained suspension of nanocapsules is filtered, washed and dried.EFFECT: invention provides simplifying and accelerating of the process of receiving nanocapsules, reducing of losses during their production (gain of weight output).1 cl, 1 dwg, 4 ex

ethod of producing nanocapsules of potassium iodide // 2595820
FIELD: chemistry.SUBSTANCE: invention relates to encapsulation. Described is a method of producing nanocapsules of potassium iodide. Envelope of nanocapsules used is konjak gum. According to disclosed method potassium iodide is added to suspension konjak gum in petroleum ether in presence of E472c preparation as a surfactant, at a weight ratio of nucleus: shell 1:1, or 1:2, or 1:3 respectively. Method then includes stirring and adding ethyl acetate. Obtained suspension of nanocapsules is filtered, washed 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, 4 ex

Two-component electron-selective buffer layer and photovoltaic cells based thereon // 2595342
FIELD: chemistry.SUBSTANCE: present invention relates to use of fullerene derivatives in optoelectronic devices such as photovoltaic cells of formula (I): X-F-(Z-Y-M)r (I), where F is [60]fullerene or [70]fullerene, M is a COOH, r is an integer from 2 to 8, Z is a group -(CH2)n-, Ar, or -S-, n is an integer from 1 to 12, Y represents aliphatic C1-C12 carbon chain, Ar is phenyl, biphenyl or naphthyl and X is H, Cl or C1-C12 carbon chain independent from Y.EFFECT: proposed is a new application of said compounds in electron-selective buffer layer organic photovoltaic cell, making it possible to increase efficiency of solar batteries.10 cl, 1 ex, 1 tbl, 5 dwg

Heat radiation sensor and its manufacturing method // 2595306
FIELD: heat engineering.SUBSTANCE: invention can be used for heat insulation of heat radiation detectors. Core of invention is that a device for thermal detection of infrared radiation includes a pixel on a semiconductor substrate, the pixel includes the first section and the second section, the first section is located onto the surface of the semiconductor substrate and includes electric circuits, the second section is separated from the first section and is located immediately above it, the second section is planar and includes legs, a micro-membrane and a temperature detector located on it, the second section is supported by columns, one of the legs has one end integrally connected with the micro-membrane and the other end integrally connected to one of the columns, the other leg has one end integrally connected with the micro-membrane and the other end integrally connected to the other of the columns, legs provide electrical connection of the temperature detector with electric circuits via appropriate columns and thermal insulation of the temperature detector and the micro-membrane from the semiconductor substrate, one of the legs includes the first part of the first dielectric layer, the first part of the second dielectric layer, part of the electroconductive layer, this part of the electroconductive layer provides the above said electrical connection, the first part of the first dielectric layer adjoins the first surface of the electroconductive layer and the first part of the second dielectric layer adjoins the second surface of the electroconductive layer, the first and the second surfaces of the electroconductive layer are opposed surfaces of the part of the electroconductive layer, part of the electroconductive layer is a source of mechanical stresses inducing tension stresses in the first part of the first dielectric layer and tension stresses in the first part of the second dielectric layer.EFFECT: technical result is the possibility of reduction of heat conductivity of the dielectric layers.20 cl, 24 dwg, 2 tbl
 
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