41results about How to "Solving Dispersion Problems" patented technology

The invention provides a boron nitride / epoxy resin heat-conducting composite material as well as a preparation method and application thereof. The boron nitride / epoxy resin heat-conducting composite material comprises the following raw material components: lignosulfonate; boron nitride; deionized water; a carboxymethyl nano cellulose solution; carboxylating the carbon nanotubes; borax; an epoxy resin; 1, 1, 2-cyclohexanedicarboxylic anhydride; the catalyst is 2, 2, 4, 6-tri (dimethylaminomethyl) phenol. The invention relates to a preparation method and application of a novel h-BN (boron nitride) composite material for thermal management, in particular to a three-dimensional vertical orientation composite material prepared by using lignosulfonate (LS) modified h-BN, cellulose nanofibers (C-CNF), carboxymethyl carbon nanotubes (C-CNT) and borax (B) as raw materials and adopting an ice template method. And the filler can be used as a novel enhanced heat conduction and electrical insulation filler in epoxy resin. According to the invention, BN is firstly modified, and surface modification is carried out on BN through sodium lignin sulfonate, so that compared with direct use of unmodified BN, the problem of poor compatibility and dispersibility of BN in the composite material is solved, and the heat-conducting property of the composite material is further improved.

The invention discloses a multi-modal Hash retrieval method, system and equipment based on a multi-view center structure and a medium, belongs to the technical field of artificial intelligence and multi-modal Hash retrieval, and aims at achieving the technical purpose of obtaining balance between intra-class compactness and inter-class separability in the multi-modal Hash retrieval process. According to the technical scheme, the method comprises the following steps: constructing a multi-modal data set; constructing a multi-modal Hash retrieval model based on a multi-view center structure; training the model; wherein the construction of the multi-modal Hash retrieval model based on the multi-view center structure specifically comprises the following steps: modal specific prototype learning: respectively extracting refined features from corresponding modals by using an image modal depth multilayer perceptron and a text modal depth multilayer perceptron; calculating the average value of the refined features of the image modality and the text modality to obtain a modality specific prototype, and further obtaining the unique features of the image modality and the unique features of the text modality; carrying out multi-modal integrated prototype learning; and performing multi-view semantic enhanced hash learning.

The invention relates to an enterprise credit evaluation system and method, the system comprises a data acquisition module, a feature engineering module and an evaluation module which are connected in sequence, and the method comprises the steps: obtaining the local data of an enterprise and the data of a regional big data center, and converting the data of the regional big data center into the data of an enterprise big data center; carrying out entropy calculation, IV value calculation and correlation coefficient analysis on the obtained data to determine in-mold multi-dimensional information, carrying out feature screening, screening out important features from the in-mold multi-dimensional information, and constructing a feature set; training an XGBoost model by using the feature set to obtain an enterprise credit evaluation model; and inputting the in-mold multi-dimensional information and the unified social credit code information of the to-be-assessed enterprise into the enterprise credit assessment model, and outputting a credit score and a suggested credit line corresponding to the to-be-assessed enterprise. Compared with the prior art, the method has the advantages that the problems of dispersion and inconsistency of multi-channel data sources in the prior art can be solved, timely updating of the data is ensured, and the accuracy of enterprise credit assessment results is improved.

The invention relates to a ferromagnetic metal stress and fatigue measurement method and device based on a magnetic induction chain, and the device comprises an external magnetic field generation device, a magnetic induction chain detection device, and a data processing system. The magnetic induction chain detection device is used for detecting the magnetic induction intensity value and the change of the magnetic induction intensity value at a surface detection point, and the data processing system is used for receiving and processing magnetic intensity data, analyzing the stress and fatigue damage condition of the ferromagnetic metal material and monitoring the stress and fatigue state of the ferromagnetic metal material; a magnetic induction chain is excited by an external magnetic field, stress and fatigue damage conditions of a material are observed in real time by monitoring a magnetic induction intensity value and changes of the magnetic induction intensity value, and the method has the advantages of high sensitivity, high reliability, high real-time performance, capability of solving the dispersion problem existing in an existing method and the like, realizes stress and fatigue measurement of ferromagnetic metal, and is suitable for large-scale popularization and application. And an effective stress and fatigue measurement means can be provided for ferromagnetic metal in engineering application.

The invention discloses an optical film, a preparation method thereof and a display device, and relates to the technical field of optical functional films. The optical film comprises a base film layer and an antistatic coating arranged on the surface of at least one side of the base film layer. The antistatic coating comprises the following raw material components: water-dispersible polyester resin, water-soluble resin, a cross-linking agent and an antistatic agent; the antistatic agent is obtained by compounding a single-walled carbon nanotube modified with a hydrophilic group and polyaniline acid, the antistatic agent comprises an inner core and a coating layer at least partially coating the inner core, the inner core comprises the single-walled carbon nanotube modified with the hydrophilic group, and the coating layer comprises the polyaniline acid. According to the optical film, the single-walled carbon nanotubes and the polyaniline acid form a composite conductive structure, and then the composite conductive structure is crosslinked with the water-soluble resin and the crosslinking agent to form a three-dimensional conductive network structure, so that the optical film obtains lasting and efficient antistatic performance with extremely low environmental humidity dependence on the premise of keeping high light transmittance, low haze and good coating adhesiveness.

The application discloses an ultrahigh-molecular-weight polyethylene silicon nano wear-resistant composite pipe and a preparation method thereof, and relates to the technical field of ultrahigh-molecular-weight polyethylene composite pipes. The ultrahigh-molecular-weight polyethylene silicon nano wear-resistant composite pipe is prepared from the following raw materials in parts by mass: 70-85 parts of ultrahigh-molecular-weight polyethylene, 5-15 parts of silicon nano particles, 3-6 parts of maleic anhydride grafted polyethylene, 0.1-1.2 parts of a silane coupling agent, 1-3 parts of a wear-resistant reinforcing agent, 0.3-1.5 parts of a lubricant and 0.3-1 part of an antioxidant. The surface of the silicon nano particles is modified by using a specific silane coupling agent, and the silicon nano particles are effectively combined with the ultrahigh-molecular-weight polyethylene matrix, so that the dispersibility of the nano particles in the polymer matrix is solved, and the wear resistance and the mechanical properties of the pipe are remarkably improved.

The present invention belongs to the technical field of fine chemical industry, and discloses a dispersant for dispersing heavy element single substance and compound powder and a preparation method thereof, wherein the main function is to be used as a powder dispersant, especially suitable for dispersing heavy element powder that is easy to settle; bismuth powder, lead powder, tungsten powder, lead oxide, lead tetraoxide, bismuth oxide, tungsten oxide, lead tungstate, lead borate and other functional particles with shielding ability. The anionic dispersant containing multiple hydrophilic groups such as sulfonic acid group, ester group and hydroxyl group in the structural formula is used to disperse heavy element powder, which can neutralize the excess charge on the oxide surface and wrap the powder particles, and finally form a uniform and stable high-content heavy element powder latex system, creating conditions for preparing radiation-proof latex products.

The application discloses a power transmission line crimping pipe X-ray detection device, system and method, which comprises the following steps: driving a detection module to reach a detection position through a lifting mechanism; driving the detection module to cover the crimping pipe detection range on the left and right sides in the same plane through a swing mechanism; or driving a first receiving plate and a second receiving plate to open through an opening and closing mechanism, and making the first receiving plate and the second receiving plate cover the crimping pipe detection range; and adjusting the angle of an emitter through a swing mechanism to make the emitter align with the first receiving plate or the second receiving plate. The detection position can be adaptively adjusted, the comprehensiveness and accuracy of detection are ensured, the traditional artificial tower climbing detection operation is replaced, and the intelligent detection operation level of the power transmission line crimping pipe is improved.

The present invention provides a method for preparing highly dispersed metal powder and a device for preparing highly dispersed metal powder. The method comprises the steps of (1) adding a base liquid into a synthesis reactor, and performing internal and external circulation of the synthesis reactor through an external circulation dispersion device connected to the synthesis reactor to achieve a stable circulation; (2) after the stable circulation meets a predetermined requirement, continuously adding an oxidizing liquid and a reducing liquid into the synthesis reactor to mix with the base liquid to form a reaction liquid, and continuously passing the reaction liquid through the external circulation dispersion device for forced dispersion, and then feeding it into the synthesis reactor; (3) performing sampling analysis and testing during the synthesis reaction, and when the particle size of the metal powder generated by the synthesis reaction meets the requirement, stopping the addition of the oxidizing liquid and the reducing liquid to stop the synthesis reaction; and (4) discharging the reaction liquid from the synthesis reactor, performing solid-liquid separation, cleaning, post-treatment, and drying to obtain highly dispersed metal powder.

This invention relates to the fields of computer data processing and database technology, specifically to an intelligent search system for business objects based on metadata. The system includes: a context request parsing module: receiving abstract search requests and extracting environment parameters and permission features to generate a dynamic context snapshot; a logical structure construction module: combining snapshot execution rule injection operations to generate a logical abstract syntax tree containing implicit filtering conditions; a multi-dialect compilation and execution module: translating the syntax tree into physical execution statements matching the target storage engine dialect according to physical mapping rules; and an adaptive optimization feedback module: monitoring execution latency data and dynamically correcting the index strategy definition. This invention solves the maintenance bottleneck caused by the tight coupling between business logic and physical storage in heterogeneous data source environments, achieving zero-code modification and hot deployment of business logic.

The invention relates to the field of epoxy molding compounds, and discloses a preparation method and application of a modified carbon nanotube and a preparation method and application of an epoxy molding compound. The preparation method comprises the following steps: (1) mixing a mixed acid solution with a carbon nanotube for reaction to obtain an acidified carbon nanotube; (2) mixing a mixed solution of thionyl chloride and N, N-dimethylformamide with the acidified carbon nano tube for reaction to obtain an acylating chlorination carbon nano tube; (3) under the protection of an inert gas, mixing the acylating chlorination carbon nano tube with ethanediamine for reaction to obtain an amino modified carbon nano tube; and (4) carrying out ultrasonic treatment on the amino modified carbon nanotube and a modifier containing an epoxy group. The epoxy molding compound prepared from the modified carbon nanotube has excellent strength and toughness, can effectively solve the problems of insufficient strength and toughness and the like of the existing epoxy molding compound, and can be well used in the field of electronic packaging.

The invention discloses a high-transparency TPU (thermoplastic polyurethane) hot melt adhesive film composition and a production process thereof, and belongs to the technical field of high polymer materials. The composition comprises a TPU matrix, a polymer modifier and the like. The production process comprises the following steps: synthesis of a four-arm star-shaped polymer modifier, vacuum dehydration of raw materials, high-speed mixing, gradient temperature control extrusion granulation, and gradient melting-rapid cooling curtain coating film formation under nitrogen protection. In order to overcome the defects that an existing TPU hot melt adhesive film is insufficient in transparency, poor in bonding durability and prone to migration of a modifier, star topology modifier design and a dual covalent cross-linking synergistic scheme are provided, molecular-level compatibility of the modifier and TPU is achieved, and finally the hot melt adhesive film high in transparency, high in bonding stability and excellent in processing performance is obtained. The method is suitable for high-end scenes such as optical device fitting.

The invention discloses root puncture resistant radix asparagi polyurea coating resin, a preparation method thereof and a prepared coating, and relates to the field of coatings. The root-puncture-resistant radix asparagi polyurea coating resin is obtained by performing esterification reaction on (R)-2-(4-chloro-2-methyl phenoxy) propionic acid and an acrylate monomer containing hydroxyl to obtain an intermediate and then performing Michael reaction on the intermediate and fatty amine, and the molecular structure of the root-puncture-resistant radix asparagi polyurea coating resin contains (R)-2-(4-chloro-2-methyl phenoxy) propionic acid group and at least one imino group. According to the invention, the active group (R)-2-(4-chloro-2-methyl phenoxy) propionic acid in the root inhibitor is grafted to the asparagine polyurea coating resin through a chemical reaction mode, so that the problems of compatibility and dispersity of the root inhibitor (R)-2-(4-chloro-2-methyl phenoxy) propionic acid and the asparagine polyurea coating resin are solved; the root puncture resistant radix asparagi polyurea coating resin has stable root puncture resistance.

The invention discloses an autism database sharing platform based on an ETL process, and belongs to the technical field of information technologies. The sharing platform comprises a data extraction module, a data conversion module, a data loading module, a metadata management module and an access control module. According to the method, efficient integration of multi-source data is achieved through the ETL process, the problems of data dispersion and format inconsistency are solved, metadata management and data standardization technologies are adopted, the understandability and utilization efficiency of the data are improved, the data security and privacy protection module is adopted to perform privacy protection on the data, and the data security and privacy protection efficiency is improved. A safe and reliable data sharing environment is established; the system can support and promote data communication and cooperation between researchers and professionals.

The application discloses a kind of low thermal conductivity high compression phase change microcapsule foam concrete and its composite dispersion-interface anchoring preparation method.The method prepares composite dispersion solution with non-ionic surfactant and silane coupling agent, carries out pre-adsorption coating treatment to phase change microcapsule, so that wet dispersion layer and interface anchoring layer are formed on its surface;Then, the treated phase change microcapsule is mixed with cement and prefabricated foam, and foam concrete is prepared by pouring, hardening and curing.The application can improve the dispersion stability of phase change microcapsule in cement paste, enhance the interface combination of phase change microcapsule and cement hydration product, reduce the thermal conductivity of the material and increase the compressive strength, and is suitable for building energy saving and temperature regulation type cement-based material.

The present application provides a sunlight-resistant colored electrochemical energy storage fabric based on recycled cotton powder and a preparation method thereof, belonging to the technical fields of flexible electronic textiles and electrochemical energy storage. The preparation method first deposits a TiO2 film on the recycled cotton powder by ALD technology, and then performs mild hydrothermal synthesis to obtain a TMOs@TiO2@CP composite powder with a three-layer nested structure. Among them, the TiO2 film protects the internal recycled cotton powder from erosion during the hydrothermal reaction and is tightly combined with the TMOs functional layer through Ti-O-TM covalent bonds, improving the structural stability and interfacial bonding force of the composite powder. The present application uses the inherent color characteristics of different transition metal oxides to replace traditional black carbon-based materials, endowing the energy storage fabric with rich color choices and meeting the aesthetic and design requirements of high-end textiles. The process route of the present application avoids the damage to the inherent flexibility and structure of cotton fabrics by drastic means such as high-temperature carbonization.

The vehicle test operation management system comprises a vehicle information module, an operation priority management module, an automatic scheduling management module, an operation state adjustment management module, a workshop task management module, a test vehicle operation state overview module and a test problem management module. By formulating various data types, structured data templates, data storage positions, management interfaces of all modules, data reference streams and the like, the problems of complicated affairs, data dispersion and the like in the operation of the automobile development test, especially the long-period whole automobile endurance test, are solved, and the efficiency of managing the related work of the whole automobile development test operation is improved. Operation events in the whole period of the test can be recorded in detail, and a standardized test report is provided, so that the test operation efficiency and the comprehensiveness and accuracy of test data are effectively improved.

The present invention belongs to the technical field of fuel cell gas diffusion layer. The present invention provides a carbon fiber paper and a preparation method thereof. Acrylonitrile-N-4-pyridyl-2-acrylamide copolymer and N,N-dimethylformamide are mixed to obtain an electrostatic spinning solution; the electrostatic spinning solution is electrostatically spun to obtain a polyacrylonitrile-based non-woven felt; the polyacrylonitrile-based non-woven felt is pre-oxidized to obtain a polyacrylonitrile-based pre-oxidized felt; the polyacrylonitrile-based pre-oxidized felt is impregnated in a resin solution and then dried, hot-pressed, carbonized, and graphitized to obtain carbon fiber paper. The present invention also provides the application of carbon fiber paper in the gas diffusion layer of a proton exchange membrane fuel cell. The present invention adopts electrostatic spinning technology to prepare polyacrylonitrile-based non-woven felts of different thicknesses, realizes ultra-thin and controllable preparation of the thickness of carbon fiber paper, and the carbon fiber paper of the present invention has excellent conductivity, so that it has a good effect in a proton exchange membrane fuel cell.

This invention discloses a release film for multilayer ceramic capacitors and its preparation method in the field of polymer composite materials. The release film uses polyethylene terephthalate as the matrix, combined with a bimodal nanoparticle system composed of specific spherical silica and alumina. It innovatively introduces a bifunctional modifier containing perfluoroalkyl and siloxane groups, as well as a hyperbranched multi-arm block polyester siloxane synergistic interface modifier. The preparation process includes key steps such as nanoparticle surface modification, functional masterbatch melt blending and extrusion, and biaxial stretching molding. Through the synergistic effect of the two special modifiers, the dispersibility of nanoparticles in the matrix is ​​significantly improved, and the interfacial bonding strength is enhanced. This results in a release film with extremely low surface roughness and excellent anti-adhesion properties, while also exhibiting good heat resistance and dimensional stability, fully meeting the requirements of high-end multilayer ceramic capacitor manufacturing processes.

The utility model relates to a bed net, mattress and bed that fit the human body, including sleeping unit, sleeping unit includes pressure relief module, and first spring module and second spring module that are arranged at interval, the second spring module is arranged right facing the shoulder position and hip position of human body; the pressure relief module is stacked right above the second spring module, the total height of the pressure relief module and the second spring module is equal to the height of the first spring module, and the elastic force of the pressure relief module is far smaller than the elastic force of the first spring module and the elastic force of the second spring module. By means of the arrangement, the defects of pressure dispersion and supporting force of a traditional mattress are effectively overcome.

This invention relates to the field of mixing device technology and discloses a mixing device for producing chemical additives for oilfield fracturing. The device includes a mixing tank and a main drive shaft. The mixing tank is internally equipped with a mounting frame, a wall scraper, and a shearing blade. The mounting frame is located inside the mixing tank, and the wall scraper is fixedly mounted on the mounting frame. Two shearing blades are symmetrically arranged on both sides of the mounting frame. This mixing device for producing chemical additives for oilfield fracturing, through the linkage of the main drive shaft, internal gear disc, slider, and spacing adjustment mechanism, allows the main shaft to rotate forward, first driving the two shearing blades to approach to their minimum spacing before rotating as a whole. In reverse rotation, it first drives the two shearing blades to move away to their maximum spacing. This creates a high-shear zone to break up agglomerates during the feeding stage and expands the shearing blade spacing during the maturation stage to reduce shear force. This achieves adaptive adjustment of shear strength according to the process stage, solving the problem that traditional mixing methods, due to their single strength, cannot simultaneously meet the requirements of dispersion and maturation.

The invention discloses outdoor glass cement with excellent weather resistance and a preparation method of the outdoor glass cement, and belongs to the technical field of binders. Comprising the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 10 parts of dimethyl silicone oil, 80-120 parts of filler, 6-12 parts of a cross-linking agent, 0.05-0.2 part of an organic tin catalyst, 0.5-2 parts of an amino silane coupling agent, 5-8 parts of a cerium dioxide immobilized hindered phenol anti-aging agent and 10-12 parts of branched polyether modified silicone oil. According to the outdoor glass cement with excellent weather resistance and the preparation method thereof provided by the invention, the cerium dioxide immobilized hindered phenol anti-aging agent is added into the glass cement, and hindered phenol is immobilized by cerium dioxide to form a synergistic anti-aging effect; branched polyether modified silicone oil is also added into the glass cement to serve as a dispersing agent, so that the problem of agglomeration or poor dispersity caused by interface incompatibility between the filler and the matrix silicone rubber is solved.

The invention discloses durable concrete and a preparation method thereof, and relates to the technical field of concrete. According to the invention, mesoporous silica fibers are modified, the surfaces of the mesoporous silica fibers are aminated, and then amino groups on the mesoporous silica fibers and methoxyl groups on hydroxypropyl methyl cellulose are subjected to Mannich reaction chemical bonding to form a three-dimensional fiber structure net, so that the performance strength of the concrete is enhanced, slow loss of water is ensured, and the thermal expansion coefficient of the concrete is reduced; the high-strength anti-cracking effect of the concrete is achieved, so that the concrete is very durable; secondly, carboxyl of modified graphene and aminopropyl of octa-aminopropyl polyhedral oligomeric silsesquioxane are reacted and combined to prepare a hybrid filler, so that the dispersity of graphene is solved, various properties of the concrete are enhanced, the graphene interacts with a three-dimensional fiber structure net, the hydrophobic effect is achieved, meanwhile, the wear resistance of the concrete can be improved, and the service life of the concrete is prolonged. Therefore, the effect of longer service time is achieved. The concrete prepared by the invention has the effects of hydrophobicity, cracking resistance and high durability.

The invention discloses a construction method and device of a cerebral apoplexy space knowledge graph database, equipment and a medium, and relates to the technical field of big data analysis. According to the application, the Tonyuqian question 2.1 model is utilized to deeply mine, analyze and publically obtain papers, identify and mark spatial distribution conditions of ischemic cerebral apoplexy genes, physiological regions and pathological regions, and the spatial distribution conditions are displayed in the form of a cerebral apoplexy spatial knowledge graph database. According to the method, genes and spatial distribution information thereof are automatically extracted from literatures, and a dynamically updated knowledge graph is constructed, so that the problems of low data integration efficiency, insufficient labeling accuracy, insufficient dynamic association and the like in cerebral apoplexy spatial heterogeneity research in the prior art are solved.

This invention describes a modified silicate-polyurethane two-component grouting reinforcement material, comprising component A and component B, which are mixed in a 1:1 volume ratio before use. Component A, by mass percentage, consists of the following components: water glass: 94%; glycerol: 1%; glyceryl ester compounds: 1%; silane coupling agent: 1%; water: 3%. Component B, by mass percentage, consists of the following components: polymethylene polyphenyl polyisocyanate PM-200: 65%; dibutyl phthalate (DBP): 35%. This invention utilizes the synergistic effect of glyceryl ester compounds and silane coupling agents. The glyceryl ester compounds reduce the interfacial tension between the aqueous and oil phases and promote the uniform dispersion of the silane coupling agent. The silane coupling agent forms a chemical bridge between the inorganic and organic phases, enabling the originally incompatible aqueous and oily agents to form a homogeneous and compatible system. The resulting solidified body has a compressive strength of 24.6 MPa and a bond strength of 3.8 MPa, making it suitable for seepage prevention and sealing in underground engineering and for surrounding rock reinforcement.

The invention provides a blast pump ECU cover assembling device which comprises a positioning support, a vertical plate, an assembling driving mechanism, a moving mechanism, an overturning mechanism and a screw turning mechanism, the positioning support is arranged on the front side of the vertical plate, a positioning seat is arranged on one side of the positioning support, a transfer table used for placing a cylinder body is arranged on the other side of the positioning support, a positioning cavity matched with an ECU cover assembly in appearance is formed in the upper end of the positioning seat, and the rotating table is arranged on the upper end of the positioning seat. The moving mechanism is arranged on the vertical plate and used for conveying the cylinder body to the position over the positioning base from the transfer table, and the combining driving mechanism is arranged below the positioning support and used for driving the positioning support to move upwards so that the ECU cover assembly and the cylinder body can be combined. The turnover mechanism is used for driving the positioning support, the vertical plate, the combination driving mechanism and the moving mechanism to rotate, and the screw turning mechanism is used for turning screws to fix the ECU cover assembly. The integrated design is adopted, integrated assembly of the ECU cover is achieved, the occupied space is reduced, the cost is saved, the assembly efficiency and the assembly quality are improved, and the problem that a sealing ring is prone to falling off in the combining and assembling process is solved.

This invention discloses a matcha compound seasoning based on Guizhou's specialty green peppers and its processing technology, belonging to the field of food processing and powdered compound seasoning technology. The seasoning, by weight, comprises 25-55 parts Guizhou specialty green pepper powder, 8-25 parts matcha powder, 8-22 parts edible salt, 2-12 parts sweetness-regulating components, 0.2-3 parts acidity-regulating components, 0.55-7.2 parts umami components, 0.2-5 parts Litsea cubeba powder or Sichuan pepper powder, 1-10 parts adsorption-stabilizing components, and 0.1-2 parts anti-caking components. The process includes green pepper grading, low-temperature color protection, segmented dehydration, graded grinding, matcha light-proof sieving, pre-loading of matcha and adsorption-stabilizing components, synergistic premixing of green pepper powder, two-stage homogenization of auxiliary materials, online moisture and uniformity control, and nitrogen-filled light-proof packaging. By controlling the ratio of the fresh and spicy aroma of green peppers to the sweet and refreshing aroma of matcha, preloading the carrier, and using low oxygen barrier, this invention improves the problems of green pepper powder being prone to browning, matcha being prone to bitterness and clumping, and the homogenization of flavor in ordinary sprinkles. The resulting product is suitable for dipping, mixing with noodles, sprinkling with barbecue, and seasoning snack foods and pre-made dishes.

The invention relates to the technical field of distributed storage, and particularly discloses a multi-language-supported intelligent auxiliary method and system for cross-country dual-teacher lesson preparation. The system comprises a teaching resource unified access and preprocessing module, a multi-mode multi-language knowledge graph construction module, a cross-language semantic understanding and resource matching module, a real-time collaborative lesson preparation work space module and a system performance optimization and resource updating module. Intelligent matching and recommendation of teaching resources are achieved through the multi-language knowledge graph and cross-language semantic coding, real-time collaborative editing and machine translation are combined, the problems of resource isomerism, semantic barrier and low collaboration efficiency in cross-country double-teacher lesson preparation are effectively solved, and lesson preparation efficiency and cross-culture teaching adaptability are improved.

The invention discloses a high-dispersion ruthenium-loaded cerium-zirconium solid solution photocatalyst, a preparation method and application of the photocatalyst in hydrogen production by photocatalytic ammonia decomposition at room temperature, and belongs to the technical field of hydrogen production by photocatalytic ammonia decomposition. The preparation method comprises the following steps: preparing a cerium-zirconium solid solution precursor from cerium salt and zirconium salt as raw materials, grinding into powder, calcining at high temperature to obtain a cerium-zirconium solid solution, dispersing in deionized water, dropwise adding a ruthenium precursor solution and a reducing agent, and performing reduction reaction to obtain a ruthenium-loaded cerium-zirconium solution; and carrying out suction filtration, drying and grinding to obtain the high-dispersion ruthenium-loaded cerium-zirconium solid solution photocatalyst. The photocatalyst can be applied to hydrogen production by photocatalytic ammonia decomposition at room temperature. According to the photocatalyst disclosed by the invention, the conversion efficiency of hydrogen prepared by ammonia gas decomposition at room temperature under visible light irradiation is improved, the thermodynamic limitation of the reaction is greatly broken through, the hydrogen production rate of ammonia decomposition reaches 56.12 mmol H2gcat <-1 > min <-1 >, and the ammonia gas conversion rate reaches 74.83%.

The invention relates to the technical field of battery materials, and discloses a carbon nanotube-ferroferric oxide composite electrode material and a preparation method thereof.The composite electrode material is of a three-level structure composed of a core layer, an interpenetrating layer and a honeycomb layer; the core layer is a conductive skeleton formed by vertically growing Fe3O4 nano nails on the surface of the carbon nanotube film; the interpenetrating layer is a bicontinuous network formed by polythiophene and Fe3O4, and the polythiophene penetrates through gaps of the Fe3O4 nano nails; the honeycomb layer is a gradient aperture porous network formed by MXene and covers the surface of the interpenetrating layer. The specific capacity of the composite electrode material at 1C reaches 700-900mAh / g, the capacitance retention rate reaches 90-96.5% after 1000 times of charging and discharging cycles at 1C, and the composite electrode material has high specific capacity, long cycle life and high rate performance, has relatively good energy storage performance and charge transmission performance, and can be used as a lithium ion battery electrode material with high power density, high energy density and long cycle life.