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155results about How to "Address controllability" patented technology

Preparation method of grapheme and ferriferrous oxide composite nanometer material

InactiveCN103274396ASolve the lack of interface binding forceResolving Particle MorphologyMaterial nanotechnologyGrapheneMicrosphereSolvent
A preparation method of a grapheme and ferriferrous oxide composite nanometer material belongs to the technical field of functional materials. The preparation method comprises the following steps: at first, oxidized grapheme is prepared by an improved chemical method; and then oxidized grapheme and ferric ions are adopted as raw materials, and are compounded through adopting a solvothermal technology to carry out one-step in-situ reduction to obtain the grapheme and ferriferrous oxide composite nanometer material. The preparation method solves the problems in the prior art that the interface binding force of grapheme and a magnetic material is insufficient, the appearances, the sizes and the magnetism of magnetic material particles are uncontrollable, and the magnetic material particles cannot be dispersed in water; the prepared composite nanometer material shows a microspheric appearance, has a loose surface and is high in specific surface area; through the change of the ratio of grapheme to the ferric ions, final magnetic property and electrical property of the composite material can be adjusted; and the controllable growth of the grapheme and ferriferrous oxide composite material is realized. The prepared grapheme and ferriferrous oxide nanometer microsheric material with magnetic and electric properties can be used in fields such as biological medicine, energy, invisibility and electronic materials.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Di-demethoxycurcumin precursor liposome and preparation method thereof

The invention provides a precursor liposome containing di-demethoxycurcumin and a preparation method capable of industrial application. The weight ratio of the di-demethoxycurcumin to phospholipids together with phospholipid derivatives is 1:5-65, 3 to 20 portions of cholesterol together with derivatives thereof and 0.5 to 5 portions of surfactant are prepared into a freeze-dried powder injection according to the portion ratio of the phospholipids to freeze-drying protective agents being 1:0.25-4. The invention relates to a novel technique and a device for preparing a precursor liposome by an efficient jetting-mixing method, has the advantages of good process reproducibility, controllable technical parameters and the like, and can provide a unilocular liposome with fat-soluble medicaments which are stably wrapped in a phospholipid bilayer. The liposome has the average particle size of between 80 and 300 nm, is narrow in the distribution range of particle size, has entrapment rate of more than 85 percent, is low in leakage rate, and is significantly improved in the stability of preparation storage process. The in vivo circulation time of the novel preparation is obviously prolonged during intravenous injection administration, and the AUC of the novel preparation is 2.67 times that of the common injection.
Owner:CHINA PHARM UNIV

Preparation method of dry powder ceramic tile and green tile thereof, and finished product

The invention relates to a preparation method of a dry powder ceramic tile and a green tile thereof, and a finished product. The preparation method of the green tile comprises the following steps: A. bottom material distribution; B. facing material distribution in press mold cavity: distributing one or a plurality of dry powders on a green material layer by using a screen provided with a hollow decorating pattern; and C. punch forming. In the method, the step A and step B are in no particular order, the step A-C sequence is a reverse punching mode; and when the step A and step B are in the reverse order, the sequence is a forward punching mode. The invention provides the preparation method of the dry powder ceramic tile and green tile thereof; and the method solves the problem that the decorative pattern is not fine enough and is not controllable or variable in the existing powder full-body tile or unglazed ceramic tile. In addition, according to the semifinished product green tile and the finished product ceramic tile, the decorative effects on the tile surfaces are wear-resistant; and the surface of the ceramic tile can be subjected to slot broaching, trimming or chamfering, and the exposed part of the cut surface has the same pattern, texture and tactile sensation as the surface of the ceramic tile, thereby enhancing the grade of the decorating effect of the ceramic tile and widening the application range of the ceramic tile.
Owner:FOSHAN DONGPENG CERAMIC +3

File sharing method and file sharing system

The invention discloses a file sharing method and a file sharing system. The file sharing method comprises steps that: an upload user terminal sends an upload request to a server; the server utilizes an upload user public key to carry out encryption on a randomized number, a first result is generated according to a first randomized number cryptograph acquired through encryption and algorithm information and is sent to the upload user terminal; the upload user terminal parses the first result and utilizes a server certificate to verify the parsed result, if verification is a success, an internal preset function is called, a first randomized number new cryptograph and a file cryptograph are acquired through the first randomized number cryptograph, a server public key and a file to be uploaded; a second result is generated according to the first randomized number new cryptograph and the file cryptograph and is sent to the server; the server receives and parses the second result, another parsed result is verified, if verification is a success, the first randomized number new cryptograph and the file cryptograph which are in the second parsed result are saved. The file sharing method utilizes the preset function in combination with an SM2 asymmetric algorithm to excellently realize confidentiality and access controllability of the shared file.
Owner:FEITIAN TECHNOLOGIES

Circular revolving brush electrostatic spinning device and use method of same

The invention relates to a circular revolving brush electrostatic spinning device comprising a liquid supplying system, a brush type spinning system and a nano-fiber collecting system. The brush type spinning system comprises a brush head, a brush shaft, a cylindrical seat and a metal annular sprayer; the brush head is installed on the tail end of the brush head; the cylindrical seat is mounted on the brush shaft; the metal annular sprayer is arranged in a place on the upper end of the cylindrical seat and corresponding to the brush head; a bearing is arranged on the lower end of the cylindrical seat and on the brush shaft; the bearing is connected with a motor via a belt; the liquid supplying system has an air bottle, a spinning liquid storage bottle and a liquid guiding pipeline; the liquid guiding pipeline is disposed in the brush shaft; the upper end of the liquid guiding pipeline is connected with the brush head and the lower end extends into the bottom of the spinning liquid storage bottle; and the spinning storage bottle is connected with the air bottle via an air pipe. High-polymer solution can be automatically fed and nano-fibers can be prepared in batches in a stable way; and meanwhile, problems of volatilization of solvent during the electrostatic spinning and uncontrollability of the nano-fiber structure can be solved.
Owner:DONGHUA UNIV

Method for building hot-dry rock artificial geothermal reservoir by using natural geological faults

The invention belongs to the technical field of construction of hot-dry rock artificial geothermal reservoirs, and particularly relates to a method for building a hot-dry rock artificial geothermal reservoir by using natural geological faults. The method comprises the following steps that 1, the occurrences, the number and the sizes of the faults in a hot-dry rock geothermal development area are determined; 2, a well group is arranged and designed along the trend of the target fault, wherein according to the arrangement way of the well group, shafts are linearly arranged in a one-injection-two-return way; 3, an injection well is drilled in the center of the trend of the target fault; 4, in the combination of the geophysical prospecting imaging technology, the macro-size of a large-fault and the azimuthal angle of a drilling hole are determined, and according to the macro-size and the azimuthal angle, the occurrence of the target fault can be precisely determined; 5, the target fault and near fracture zones are used as the fracture development artificial geothermal reservoir which is high in permeability and large in heat exchange area; 6, a lot of room-temperature water is injectedinto the injection well, heat exchange is conducted through the natural artificial geothermal reservoir crack network of the target fault, transformation from solid heat to liquid heat is achieved, and high-temperature water and over-hot water vapor are produced from production wells to be used for electricity generation or heat supply.
Owner:TAIYUAN UNIV OF TECH

Preparation method of low-cost and large-tow 48K carbon fiber preimpregnated cloth and composite material thereof

InactiveCN106626439AExpand application formExpand the scope of applicationFiberEpoxy
The invention discloses a preparation method of a low-cost and large-tow 48K carbon fiber preimpregnated cloth and a composite material thereof. According to the preparation method disclosed by the invention, a resin system compound formula and an impregnating-rolling dual-configuration method are adopted, so that the viscosity of a resins system is reduced, the infiltrating effect is improved, and the technical difficult problems that a fiber bundle is low in resin content, high in content of volatile components, uncontrollable in resin content and the like are solved. The invention also provides the preparation method of the 48K large-tow carbon fiber epoxy resin preimpregnated cloth; after forming, epoxy resin carbon fiber prepreg and a composite material thereof which are low in cost, high in performance and suitable for large-scale application in all industrial fields are obtained; the preparation cost of the composite material is greatly reduced, the application form and the application range of carbon fibers are widened, and the production efficiency and the stability of a process and a product are improved; large size, diversification and structural complication of the product can be realized; and the invention provides a low-cost carbon fiber raw material for application in the fields such as communication and transportation, engineering machinery, constructional engineering and energy.
Owner:CHANGCHUN UNIV OF TECH

Preparation method of reductive-response amphipathic wormlike monomolecular prodrug

The invention discloses a preparation method of reductive-response amphipathic wormlike monomolecular prodrug. On the basis of linear structure of glucan, stimulus response of high-concentration glutathione in tumor cells is utilized to promote splitting of disulfide bonds of the amphipathic wormlike monomolecular prodrug to realize synchronous release of camptothecin (CPT) which is antitumor drug so as to act on a tumor position. The preparation method includes following steps: (1), preparing camptothecin monomer: specifically introducing disulfide-bond camptothecin CPT-SS; (2), preparing a drug initiator DEX-Br; (3), polymerizing the camptothecin monomer CPT-SS on the initiator through atom transfer radical polymerization (ATRP) to obtain a DEX-CPT-SS hydrophobic intermediate product; (4), utilizing ATRP to polymerize polyethylene glycol methacrylate (OEGMA) to obtain amphipathic segmented polymer DEX-CPT-OEGMA-SS named as DCO-SS. The obtained amphipathic wormlike monomolecular prodrug can directly form a drug monomolecular micelle in an aqueous phase, has the advantages of high drug loading capacity (higher than 23wt%), high micelle stability, sensitive stimulus-response drug release, high biocompatibility and low toxic and side effect on normal tissue. The problem that hydrophobic drug is low in molecular solubility is solved effectively, and an efficient drug delivery carrier is provided.
Owner:SOUTHWEST UNIVERSITY

Asset securitization management system and method based on blockchain

The invention relates to an asset securitization management system and method based on a blockchain, and the system comprises an alliance chain which consists of four types of role participants: an original equity person, an intermediary mechanism, a supervision mechanism and an investor, and the four types of role participants respectively have respective account books. Data recorded in account books of the four types of role participants are kept consistent, the four types of role participants are connected with a consensus service network, and the consensus service network performs identityauthentication on each role participant according to the certificate trust chain; and the control module is used for performing node election, account book data consistency verification and data synchronization control on the four role participants so as to ensure that the account book data of the four role participants is consistent. Compared with the prior art, by constructing the distributed system, the basic asset information and the project operation information are synchronously uploaded in the whole process, the whole-network real-time sharing of the data is realized, the uploaded datacan be tracked and audited and cannot be randomly tampered, and the credibility of the data subsequently acquired by a user is also ensured.
Owner:BANK OF COMMUNICATIONS

Industrial robot demonstration track recurrence method and system and robot

The invention belongs to the technical field of robots, and provides an industrial robot demonstration track recurrence method and system and a robot. The method comprises the steps that various jointinformation of the robot is collected, and the pose information of the tail end pose is obtained according to the various joint information of the robot; the pose information is subjected to fitting,and a continuous recurrence track is obtained; the running speed of the recurrence track is calculated according to the recurrence track; speed planning is conducted on the recurrence track accordingto the motion speed of the recurrence track; and according to the speed planning result, the position information of the recurrence track in each interpolation period is obtained, and the robot is controlled to move according to the position information. Through collection of the joint information of the robot, fitting is conducted according to the pose information obtained after smoothing, the continuous recurrence track is obtained, the errors of the tail end pose are reduced, meanwhile, it is guaranteed that the curvature of the recurrence track is continuous, speed planning is conducted on the generated recurrence track, and accordingly it is guaranteed that the speed in the track reoccurrence process is controllable.
Owner:SHENZHEN YUEJIANG TECH CO LTD

Defect detecting device and method for non-elevation reflective surface workpieces

The invention provides a defect detecting device and a method for non-elevation reflective surface workpieces. The device comprises a first light path, a second light path, a moire surface light source, a half transparent and half reflecting mirror, an industrial camera and a computer. A moire fringe beam emitted by the moire surface light source reaches the half transparent and half reflecting mirror along the first optical path. The half transparent and half reflecting mirror reflects the moire fringe beam onto the surface of a non-elevation reflective surface workpiece to form a signal light. The signal light reaches the half transparent and half reflecting mirror along the second light path. The half transparent and half reflecting mirror transmits the signal light to the industrial camera to form a detection image. The computer processes the detection image to determine whether the surface of the non-elevation reflective surface has defects and determines the position of each defect. The invention can accurately detect the defects of the surface of the non-elevation reflective surface workpiece, and solves the problem that the image is supersaturated due to glare during imageacquisition and the detection resolution is uncontrollable.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Fuzzy adaptive central air-conditioning cooling water energy-saving control system and fuzzy adaptive method thereof

The invention provides a fuzzy adaptive central air-conditioning cooling water energy-saving control system and a fuzzy adaptive method thereof. The system comprises an industrial control computer, a programmable logic controller (PLC), an analog input module, an analog output module, a digital input module, a digital output module, a frequency converter, first and second platinum resistance temperature sensors, a cooling fan and a cooling water pump, wherein the first and second platinum resistance temperature sensors acquire the temperature signals of cooling supply and return water in real time; the signal is transmitted to the PLC and then to the industrial control computer; and the industrial control computer obtains the proportion and integral controller parameters in a cooling water pump and cooling fan control circuit through real-time computation according to the computer programs and ensures the parameters to automatically adapt to variation of the working conditions of the central air-conditioning system. The invention solves the problems of higher energy consumption and poor control performance in the operation processes of the traditional central air-conditioning cooling water systems and ensures the central air-conditioning cooling water system to operate efficiently and stably under partial load operation conditions.
Owner:中环清新人工环境工程技术(北京)有限责任公司

Silicon plastid microcapsule and preparation method thereof

The invention discloses a silicon plastid microcapsule and a preparation method thereof. The preparation method for the silicon plastid microcapsule comprises the following steps: (1), dissolving organic-inorganic composite lipid in organic solvent, and removing the organic solvent by rotary evaporation to form a lipid membrane; (2), adding a template microsphere solution which is uniform in grain size to the lipid membrane for incubation; (3), carrying out a water-bath ultrasonic process to the mixed solution acquired in step (2); (4), stewing the solution at room temperature after the ultrasonic process, and forming a silicate shell layer on the surface of the template microsphere; and (5), removing the template microsphere which is coated with the organic-inorganic composite lipid on the surface to acquire the silicon plastid microcapsule. According to the invention, micron-size microsphere is used as a template and organic-inorganic lipid is used as a capsule wall material to prepare the silicon plastid microcapsule which is uniform and controllable in grain size, stable in property and dispersible. The method has a simple process, gentle operation conditions, good repeatability and can be extensively applied to such fields as packaging of active substance, a drug delivery system, embedding and catalytic reaction of enzyme, ultrasonic contrast agent, tissue engineering and the like.
Owner:SUN YAT SEN UNIV
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