455 results about "Direct reaction" patented technology

A system for obtaining revenue through the display of advertising on fixed or moving objects id disclosed. Such objects receive, store, poll and extract data to present content based on the time of day, locations, and relative movements in a specific environment, where data and information stored in moving or mobile objects within that environment can be transmitted between those objects or to stationary objects, where it is then used to enable and control such displays for which the owners of those objects are then compensated. The system enables the display of hyper-relevant ad content with synchronized remote audio, personal messaging and public service alerts on surrounding objects and provides for the real-time logging and later downloading of data to confirm communications and content deliveries between objects, track and measure consumer engagement, verify consumer's direct responses to ad viewings with accountability systems.

A biosensor comprising an electrically insulating base plate, an electrode system containing a working electrode and a counter electrode disposed on the base plate, and a reagent system comprising at least an oxidoreductase, a hydrophilic polymer and an electron mediator, wherein the reagent system further comprises a substance having a function to convert an organic product generated by direct reaction of a substrate to be measured with the oxidoreductase to another compound.

A surgical clip for occluding a vein, artery or other body passageway (2) comprises a base portion (3), a pair of resilient limbs (4a, 4b) configured to extend generally laterally outwardly from the base portion and each having a free end disposed forward of the base portion, and a reaction portion (9a / b) mounted to the base portion (3), the reaction portion defining a generally forwardly directed reaction surface (10) disposed between the base portion (3) and the free ends of the limbs (4a, 4b), the being movable under a resilient restoring force from a first, open, condition, in which a gap is provided between the limbs and the reaction portion for receiving the body passageway into the clip, to a second, closed, condition, in which the limbs cooperate with the reaction portion to grip the body passageway to occlude the same.

The invention discloses a dual-functional catalyst composition and an integrated process for production of olefin epoxides including propylene oxide by catalytic reaction of hydrogen peroxide from hydrogen and oxygen with olefin feeds such as propylene. The epoxides and hydrogen peroxide are preferably produced simultaneously in situ. The dual-functional catalyst comprises noble metal crystallites with dimensions on the nanometer scale (on the order of <1 nm to 10 nm), specially dispersed on titanium silicalite substrate particles. The dual functional catalyst catalyzes both the direct reaction of hydrogen and oxygen to generate hydrogen peroxide intermediate on the noble metal catalyst surface and the reaction of the hydrogen peroxide intermediate with the propylene feed to generate propylene oxide product. Combining both these functions in a single catalyst provides a very efficient integrated process operable below the flammability limits of hydrogen and highly selective for the production of hydrogen peroxide to produce olefin oxides such as propylene oxide without formation of undesired co-products.

An improved, user-friendly silane / silica sol copolymer hardcoating composition for protecting optical plastic and other substrates (including wood, metals, glass, plastics and most coated articles) from scratching is able to be manufactured at lower costs and to provide much-improved ease of use in transportation, storage, dipbath (or other coating tank) stability, and blush resistance in ordinary cleanroom atmospheres. The silane / silica sol copolymer is formed as a direct reaction product of an acidic silica sol and monomethyltrialkoxysilane, preferably substantially monomethyltriethoxysilane, in ratios of 30:70 to 70:30, most preferably about 40:60. A tail solvent aids blush resistance, reduces internal stress and permits adhesion to unprimed polycarbonate. Optionally, colloidal silica sol dissolved in water-miscible solvent may be reacted in a second stage with acidic aqueous colloidal silica sol earlier silanized with monomethyltrialkoxysilane.

There is provided a method to modify biodegradable polymers using the direct reaction of a biodegradable polymer in a vinyl monomer and may take place in the presence of initiators. The initiator may be free radical initiators, heat, ionic initiators, UV irradiation, ionizing irradiation and other high energy irradiation. Suitable biodegradable polymer include polycaprolactone, poly(lactic acid), poly(glycolic acid) and poly(lactic-co-glycolic acid). Suitable vinyl monomers include acrylates, methacrylates and the like.

The invention relates to a supported non-metallocene catalyst. The supported non-metallocene catalyst is obtained by a non-metallocene ligand and a transition metal compound which directly react on a carrier through an in-situ supporting method. The preparation method for the supported non-metallocene catalyst has simple and feasible process, and the supporting capacity and the polymerization activity of the catalyst have wide adjustable range. When the supported non-metallocene catalyst is combined with a catalyst promoter to catalyze the homopolymerization / copolymerization of olefins, high polymerization activities of the olefins can be obtained only by using small amount of the catalyst promoter.

A system and method for cardiac rhythm management, which includes an electrode system having at least one electrode and control circuitry coupled to the electrode system from which a first cardiac signal is sensed. The control circuitry includes a pulse circuit to produce electrical pulses at a first value to be delivered to the electrode system in a first cardiac region. At least one cardiac signal is sensed from a second cardiac region, where the cardiac signal includes indications of cardiac depolarizations from the second cardiac region which occurs in direct reaction to the electrical pulses delivered to the first cardiac region. The first value of the electrical pulses are then modified by a pulse adjustment circuit when a cardiac depolarization which occurs in direct reaction to the electrical pulse delivered to the first cardiac region is detected from the second cardiac region.

Direct reaction fuel cells (10) with cross-flow of an electrolyte mixture through thick, porous electrodes (12, 18) that contain a mixture of catalyst particles and that rotate to generate Taylor Vortex Flows (54) and Circular Couette Flows (56) in electrolyte chambers (24) are disclosed.

THe synthesis of loaded metallocene catalyst includes the mixing of carrier and IVB transition metal halide in solvent and at normal pressure and subsequent direct reaction with ligand negative ion. The present invention completes the synthesis and carrying of metallocene catalyst in one single step. The metallocene catalyst is cooperated with cocatalyst and used in polymerization reaction of olefine in required activity.

The invention relates to a supported non-metallocene catalyst. The supported non-metallocene catalyst is obtained by a non-metallocene ligand and a transition metal compound which directly react on a carrier through an in-situ supporting method. The preparation method for the supported non-metallocene catalyst has simple and feasible process, and has wide adjustable range of the supporting capacity and the polymerization activity of the catalyst. When the supported non-metallocene catalyst is combined with a catalyst promoter to catalyze the homopolymerization / copolymerization of olefins, high polymerization activities of the olefins can be obtained only by the less using amount of the catalyst promoter.

A binary titanium (VI) alkoxide compound is disclosed, which can be used as high-activity catalyst in esterification, ester exchange and polycondensation reactions. Said compound is prepared from easily hydrolytic Ti (VI) compounds or their hydrolyzed products and diol or hydrous diol through direct reaction to generate gel, regulating temp and pressure of reaction system or introducing inert gasto gradually remove the low-molecular resultants in reaction system, decolouring and drying. Its advantages include simple preparing process, low cost, and the high catalytic activity, optical catalytic performance and anti-hydrolysis nature of said product.

The invention belongs to the technical field of removal, purification and entrapment of heavy metal ions in a water body, and in particular relates to an ethylenediamine-based heavy metal chelating agent and a preparation method thereof. The ethylenediamine-based heavy metal chelating agent is prepared by directly reacting ethylenediamine, carbon disulfide and solid alkali in absolute ethyl alcohol or a mixed solvent consisting of absolute ethyl alcohol and diethyl ether in a certain volume ratio. The method overcomes the defect of steric effect of polymer chains when the conventional polymeric chelating agent chelates the heavy metal ions, and also overcomes the defect that floccules have excessive negative charge to obstruct the further growth of the floccules because of mismatched space of chelation groups of small molecules with multiple functional groups. The product is solid powder, has high stability and is convenient to store and transport. The method has the advantages of simple synthetic process, mild reaction conditions, easy operation and control, high reaction speed, high efficiency, recyclable solvent, high utilization rate of raw materials, less discharge of three wastes, environmental-friendly technical process, conventional equipment and easy industrial production.

A process for preparing the modified montmorillonite used to prepare composite polymer / montmorillonite nano-material with excellent properties features the direct reaction between powdered montmorillonite and organic modifier. Its advantages are no need of water and solvent, and no environmental pollution.

The invention provides a fluid logging oil-gas-water interpretation method based on an oil-gas-water index chart. The fluid logging oil-gas-water interpretation method is characterized by comprising the steps that parameters are collected, wherein the fluid logging parameters comprise heavy hydrocarbon components; the parameters are pre-processed, and the parameters capable of reflecting fluid quality changes in a stratum are selected; the parameters are calculated, wherein three derivative parameters comprising an oil index, a gas index and a water index capable of directly reflecting oil-gas-water characteristics are selected; the oil-gas-water index standard chart is built, wherein according to the a known oil test conclusion, a graphical bar is drawn on the basis of the three derivative parameters comprising the oil index, the gas index and the water index; parameter calculation is conducted on a target layer; the target layer is evaluated according to the standard chart. According to the fluid logging oil-gas-water interpretation method, quality of oil-gas-water in a collection layer is identified and judged by means of the fluid logging technique, a hydrocarbon reservoir is evaluated timely and accurately, and basis data are provided for selection of a well test method in follow-up shaft work, formulation of a test measurement, and selection of a test scheme timely.

The invention relates to a method of preparing full-stable and cubic-phase zirconia crystal fibers, which mainly comprises the following steps: using zirconium oxychloride, acetylacetone and triethylamine as main raw material and using ethanol as diluent solvent to directly react at a temperature of 0 DEG C to 50 DEG C under a stirring condition so as to generate an organic polymer solution comprising zirconium; evaporating the ethanol and using acetone as solvent to dissolve soluble substances and filter and remove an undissolved substance of triethylamine hydrochloride; recycling the acetone, dissolving the obtained products and yttrium salt to the ethanol to prepare a spinning solution which is centrifugally flung at a high speed to obtain organic polymer fibers comprising zirconium; and carrying out heat treatment in a special atmosphere and ultra-high temperature treatment of the organic polymer fibers comprising zirconium. The invention has simple preparation technology and can recycle the solvent, and the prepared crystal fibers have single ingredients, high purity and stable high-temperature performance and can be used in a range from 1700 DEG C to 2150 DEG C for a long time.

The invention provides a preparation method of a Al2O3 nanoparticle reinforced aluminum-based composite material, belonging to the technical field of the aluminum-based composite material. The method uses sodium borate (Na2B4O7.10H2O) type boride and K2ZrF6 type fluoride powder as the reaction mixed salt and adopts the direct reaction of molten metal to directly synthetize the nano-Al2O3 particlereinforced aluminum-based composite material in molten aluminum. The invention mainly has the following advantages: the reaction system can effectively control the growth of Al2O3 particles and ensure that the size of the reinforcement phase is controlled to the nanoscale; and the synthesis temperature of the reaction system is 800-850 DEG C, and the defects of the traditional method which uses oxide to prepare the Al2O3 particle reinforced aluminum-based composite material can be overcome, wherein the defects are that the particles are easy to grow, the size can not be controlled and the reaction temperature is high. In addition, with the increase of the addition amount of the reaction mixed salt in the reaction system, the reinforcing particles have smaller size and more uniform distribution; the interface binding of the particles and the substrate is good, no pollution is caused; and the preparation method is an effective method which is suitable for preparing the high-performance nanoparticle reinforced composite material at a low temperature.

A method and system and for screening and indicating individuals with hidden intent, wherein the system comprises: a) a working place for fulfillment of at least one stated assignment; b) a stimuli exposure block configured to exposure at least one stimuli to said working place within at least one exposure timeframe while said timeframe is contemporary with individual's fulfillment of at least one stated assignment and said stimulus does not require an active direct reaction from the individual and is intended to cause a psycho-physiological reaction; c) sensors and measuring tools block configured to register individual's psycho-physiological characteristics giving rise to registered parameters; and a processor configured to compare the registered parameters or derivatives thereof with a test criterion and to facilitate indication of hidden intent in case of predefined discrepancy.

An improved, user-friendly silane / silica sol copolymer hardcoating composition for protecting optical plastic and other substrates (including wood, metals, glass, plastics and most coated articles) from scratching is able to be manufactured at lower costs and to provide much-improved ease of use in transportation, storage, dipbath (or other coating tank) stability, and blush resistance in ordinary cleanroom atmospheres. The silane / silica sol copolymer is formed as a direct reaction product of an acidic silica sol and monomethyltrialkoxysilane, preferably substantially monomethyltriethoxysilane, in ratios of 30:70 to 70:30, most preferably about 40:60. A tail solvent aids blush resistance, reduces internal stress and permits adhesion to unprimed polycarbonate. Optionally, colloidal silica sol dissolved in water-miscible solvent may be reacted in a second stage with acidic aqueous colloidal silica sol earlier silanized with monomethyltrialkoxysilane.

The invention belongs to the technical field of biomedicine detection, in particular to a method for preparing a nano-fluorescent probe with the quantum dots and an application of the nano-fluorescent probe with the quantum dots on tumor detection. According to the method, aiming at the defects that the traditional preparation method of the quantum dots is complicate to operate and high in cost, a simple and cheap water phase synthetic technique with the quantum dots is provided. The specific synthetic process comprises the synthesis of the water soluble quantum dots, the synthesis of a biocompatible modifier (mPEG) and a tumor cell targeting modifier (cRGD) with the sulfydryl functional groups and a direction reaction between the quantum dots and the two modifiers with the sulfydryl functional groups. According to the method provided by the invention, the preparing raw materials are easy to obtain, the whole preparation process is covalent modification under the conventional condition and the properties of the quantum dots and the modifiers are not changed, and the functions of in vivo long circulation and special cell targeting are simultaneously given for the quantum dots through a one-step reaction, so that the cost is effectively reduced. The modified fluorescent and bright quantum dots obtained by the method are about 5nm in particle size, strong in anti-photo-bleaching property, and have good biocompatibility. The transfection efficiency of the quantum dots on human breast cancer MDA-MB-231 cells can be effectively regulated and controlled by further adjusting the mole ratio of mPEG to cRGD on the surfaces of the quantum dots, so that the nano-fluorescent probe with quantum dots can be applied to the cell fluorescent imaging detection of the tumor targeting.

The invention relates to a supported non-metallocene catalyst. The supported non-metallocene catalyst is obtained by a non-metallocene ligand and a transition metal compound which directly react on a carrier through an in-situ supporting method. The preparation method for the supported non-metallocene catalyst has simple and feasible process, and the supporting capacity and the polymerization activity of the catalyst have wide adjustable range. When the supported non-metallocene catalyst is combined with a catalyst promoter to catalyze the homopolymerization / copolymerization of olefins, the high comonomer effect is showed, and high polymerization activities of the olefins can be obtained only by using small amount of the catalyst promoter at the same time. Moreover, the obtained polymers have good particle morphology and high bulk density.

The invention discloses starch-liquefying modified thermosetting resin film-coated controlled release fertilizer and a preparation method of the fertilizer. The method comprises the following steps of: preparing a starch-liquefying modified film coating solution from starch under a certain liquefying condition, and simultaneously spraying the film coating solution and a curing agent on the surfaces of fertilizer particles for direct reaction to obtain a cured film, thus obtaining the starch modified thermosetting resin film-coated controlled release fertilizer which is good in film forming property and strong in water resistance. The film-coated controlled release fertilizer produced by the method disclosed by the invention has excellent controlled release performance, a nutrient release period can be controlled from 1 month to 12 months, and in addition, the film material prepared by the method disclosed by the invention has biodegradability so that a residual film shell in soil is fast in degradation. The fertilizer uses the starch, which is a renewable plant biomass resource, as a film coating material, so that the dependence on petrochemical resources is reduced. Therefore, the method is simple in process and equipment, pretty low in production cost and suitable for large-scale industrialized production and popularization and application to field crops.

A direct organic fuel cell includes a formic acid fuel solution having between about 10% and about 95% formic acid. The formic acid is oxidized at an anode. The anode may include a Pt / Pd catalyst that promotes the direct oxidation of the formic acid via a direct reaction path that does not include formation of a CO intermediate.

The invention relates to an electrochemical method for synthesizing acidic hydrogen peroxide. According to the electrochemical method, hydrogen, oxygen and an acidic solution serve as raw materials, and an acidic hydrogen peroxide aqueous solution is prepared in an in-situ electro-catalytic mode through a fuel battery type reactor. In the fuel battery type reactor, the oxygen and the hydrogen enter a negative pole and a positive pole through gas inlets of a negative pole end plate and a positive pole end plate correspondingly and conduct an electrochemical reaction on a gas diffusion pole carrying an electro-catalyst, obtained products enter an electrolyte rapidly, and thus the hydrogen peroxide is easily enriched; a proton exchange film is arranged in the middle, so that the explosion risk of direct reaction of the hydrogen and the oxygen is avoided, safety is high, the reactor is small in size, and the products can be simply separated from reactants. By adopting the gas diffusion pole carrying the electro-catalyst, the three-phase reaction interface is effectively increased, the utilization rate of the catalyst is increased, the reaction rate is increased, and the overpotential and energy consumption of the reaction are effectively reduced.

The invention provides a secondary coupled modified mineral powder filling material which comprises, by mass, 85 to 98% of silicate clay mineral powder, 1.0 to 10% of a coupling agent, and 1.0 to 10% of a functional organic compound, wherein the amount of the above-mentioned components sums to 100%. The modified mineral powder filling material prepared in the invention has good compatibility with a rubber substrate, and functional organic compound modified mineral powder with high affinity is beneficial for improvement of reinforcing performance of the filling material; since a water phase does not participate in the process of preparation, reaction obstacles caused by hydrophilicity of the mineral powder are avoided, the mineral powder can directly react with the coupling agent, higher grafting efficiency is realized, solid-liquid separation difficulty is reduced, drying efficiency is enhanced, and the phenomenon of caking in the process of drying is avoided.

The invention provides a preparation method of nitrogen-doped graphene by a chemical vapor deposition method, which comprises the following steps of: providing a substrate with high temperature resistance, and a solid and / or liquid organic carbon source compound; preparing the organic carbon source compound into solution or suspension; coating the solution or suspension of the organic carbon source compound on the surface of the substrate; heating the substrate coated by solution or suspension containing the organic carbon source compound to 500-1300 DEG C under an oxygen-free and vacuum environment, then leading into gaseous nitrogen compound to react to obtain nitrogen-doped graphene. The preparation method of nitrogen-doped graphene provided by the invention prepares the solid and / or liquid organic carbon source compound into solution or suspension and coats directly on the surface of the substrate to make the organic carbon source compound react with the introduced nitrogen compound. The method provided by the invention has the advantages of having no need of adding a catalyst, simplifying the production process of nitrogen-doped graphene effectively and reducing the production cost. At the same time, the nitrogen-doped graphene prepared by the chemical vapor deposition method enables the doped graphene to be controlled easily in the amount, to be doped uniformly and to be high in electrochemical stability.

The invention has supplied a method to prepare aliphatic polyester compound material of biological ceramic and biological degradation. Biological ceramic nm / mm particle reacts with glycolic acid in the dehydrating condition of boiling with toluene, or with biological ceramic and glycolic acid in inorganic solvent. By graft on the surface of the biological ceramic particle, acquire the chemical strycture of -biological ceramic, then without water and oxygen, with stannous octoate as initiator, initiate hydroxyl group of glycolic acid loaded with caprolactone, lactide, diglycolide and cyclic ester, acquiring the product of them and nm / mm compound material of copolymer. The biological ceramic modified by glycolic acid and loaded with polyester of surface graft can be used for polyester material directly.

The invention relates to a 2-(2'-hydroxyphenyl) benzothiazole chelated zinc derivative as well as a preparation method and an application thereof, belonging to the field of organic electroluminescentluminescent materials. The preparation method of the derivative comprises the following steps: firstly, introducing different substituent groups with electron-withdrawing or electron-donating capability in a benzothiazole benzene ring or a hydroxyphenyl benzene ring of a 2-(2'-hydroxyphenyl) benzothiazole matrix to obtain a substituted 2-(2'-hydroxyphenyl) benzothiazole ligand; coordinating with diatomic zinc to form a corresponding complex, and the like. The substituted 2-(2'-hydroxyphenyl) benzothiazole ligand can be prepared by a plurality of reactions, such as substituted aniline acylation, hydroxyl protection, hydroxyl thiocarbonate, Jacobson cyclization while hydroxyl deprotection, and the like or prepared by a direct reaction of O-amino thiophenol and substituted ortho-hydroxybenzoic acid. When applied to an organic electroluminescent luminescent device as an electronic transmission layer, the derivative has favorable electronic transmission performance and has performance superior to the most common electronic transmission material 8-hydroxyquinoline aluminum.