Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

100results about How to "Adjustable structure" patented technology

Point cloud segmentation method and system based on double channels

The invention discloses a point cloud segmentation method and system based on two channels, and relates to the technical field of computer vision and artificial intelligence, and the method comprises the steps: collecting point cloud data; creating a feature channel according to the three-dimensional point cloud data; and performing feature fusion and classification according to the feature channel. According to the point cloud segmentation method based on the two channels, different types of features are processed in different channels, high calculation efficiency is kept while global feature dependence is captured, and the method is suitable for processing and segmentation tasks of large-scale point cloud data. Two different network architectures are used, the structure and parameters of the model are flexibly adjusted to adapt to different application requirements, and a more efficient and reliable solution is provided for a point cloud segmentation task in a complex three-dimensional scene. The method has better effects in the aspects of segmentation precision, segmentation result accuracy and universality.
Owner:SHANGHAI INST OF TECH

Lactobacillus reuteri HNU872 and application thereof in preparation of intestinal inflammation related products

The invention provides lactobacillus reuteri HNU872 and application of the lactobacillus reuteri HNU872 in preparation of intestinal inflammation related products. The invention discloses how the Lactobacillus reuteri HNU872 effectively alleviates the phenotype of DSS-induced mouse enteritis. The invention also discloses a preparation method of the Lactobacillus reuteri HNU872. Research results show that the Lactobacillus reuteri HNU872 can significantly relieve weight loss caused by enteritis, improve colon length, significantly improve the level of anti-inflammatory cytokines in serum and reduce the concentration of pro-inflammatory cytokines. In addition, the expression of the intestinal tight junction protein ZO-1 is obviously promoted. The lactobacillus reuteri HNU872 can regulate diversity and structure of intestinal microbiota of mice, inhibit enrichment of pathogenic bacteria and relieve inflammatory response. According to the invention, the action mechanism of the lactobacillus reuteri HNU872 in improving enteritis is clarified, and a solid scientific basis is provided for developing a microbial product based on probiotics as an alternative treatment strategy for ulcerative colitis.
Owner:HAINAN UNIV

Polyvinylidene fluoride-based nanofiber yarn wave-absorbing fabric as well as preparation method and application thereof

The invention provides a polyvinylidene fluoride-based nanofiber yarn wave-absorbing fabric as well as a preparation method and application thereof, and belongs to the technical field of preparation of wave-absorbing composite materials. The preparation method comprises the following steps: preparing nanofiber yarns or nanofiber core-spun yarns by adopting a conjugate electrostatic spinning technology, directly adding a conductive substance into a spinning solution to form conductive nanofibers, and further coating the nanofiber yarns or the nanofiber core-spun yarns with a PDA shell layer to improve the wear resistance and reduce silver nanoparticles in situ; finally, the yarns are woven into fabric through a weaving or knitting technology, and the fabric is applied to the fields of buildings, electromagnetic protective clothing, flexible electronics and the like. Compared with an existing microwave absorbing material, the fabric-based material is light in weight and good in mechanical flexibility and processability. Fabrics formed of nanofiber yarns or nanofiber core spun yarns facilitate the induction of interfacial polarization and multiple reflections, and can deeply design material properties. The material provided by the invention has better wear resistance, wearability and microwave absorption performance, and is suitable for actual production and application.
Owner:DONGHUA UNIV

Generative artificial intelligence-based privatized large model construction method and system

The invention discloses a privatized large model construction method and system based on generative artificial intelligence, and relates to the technical field of privatized large models, and the method comprises the steps: obtaining a data source through an enterprise internal system or a financial database, carrying out the data preprocessing, and building a privatized large model. Feedforward network parameters are adjusted and optimized based on an ecological niche dynamic optimization algorithm, and a network training process is optimized based on a self-encoding neural network algorithm of unbalanced dynamic optimization. According to the method, the problem that a traditional optimization algorithm is likely to fall into local optimum in high-dimensional financial data is effectively solved, rapid changes and complex characteristics of data in the financial market can be better dealt with, the robustness of the model in the face of abnormal values, noise and extreme events in the financial data is improved, and the stability and prediction accuracy of the model are enhanced.
Owner:QUANZHOU JINTONG INFORMATION TECHNOLOGY CO LTD

Microbial composite efficient organic bacterial fertilizer and preparation method thereof

The invention discloses a microbial compound high-efficiency organic bacterial fertilizer which comprises the following raw materials: 10-20 parts of a microbial agent, 10-20 parts of humic acid, 3-10 parts of natural mineral powder, 1-7 parts of a plant extract, 2-4 parts of amino acid, 2-5 parts of a seaweed extract, 1-3 parts of chitosan, 3-7 parts of charcoal, 1-3 parts of chitin, 2-5 parts of potassium fulvate and 1-3 parts of lignosulfonate. The problems that existing organic bacterial manure is single in function, not remarkable in effect, high in preparation cost and the like are solved. The organic bacterial fertilizer has multiple functions of improving soil fertility, promoting crop growth, enhancing crop stress resistance and the like, and the preparation method is simple, easy to implement, low in cost and suitable for large-scale production.
Owner:FENGTIANBAO AGRI TECHOLOGY CO LTD +1

Carboxyl-containing Troger base and preparation method of anion exchange membrane of Troger base

The invention discloses a carboxyl-containing Troger base and a preparation method of an anion exchange membrane of the carboxyl-containing Troger base, and relates to the technical field of ion exchange membrane preparation. The preparation method of the anion exchange membrane containing the carboxyl comprises the following steps: synthesizing a Troger base containing the carboxyl, synthesizing a polybenzimidazole polymer containing the Troger base, synthesizing an anion exchange membrane polymer containing the Troger base, and preparing the compact anion exchange membrane containing the Troger base. Compared with the prior art, the preparation method has the advantages that the carboxyl-containing Troger base is synthesized through the reaction of specific aminomethyl benzoic acid and dimethoxymethane and by using trifluoroacetic acid as a solvent and a catalyst, so that the purity and the stability of a product are improved, the carboxyl-containing Troger base is more effectively introduced into a polybenzimidazole polymer, and the polybenzimidazole polymer is prepared. The porosity of the polybenzimidazole polymer is improved, so that the electrochemical performance and the mechanical stability of the anion exchange membrane are improved.
Owner:SHENZHEN JIUYING HYDROGEN ENERGY TECHNOLOGY CO LTD

Preparation method and application of lignin-based resin and carbon material for battery

The present application discloses a method for preparing a carbon material for a battery, comprising: filtering and concentrating papermaking black liquor to obtain liquid lignin; polymerization: adding a cross-linking agent to the liquid lignin for cross-linking and curing reaction to obtain a lignin polymer solid; pre-oxidation: pre-oxidizing the lignin polymer solid to obtain a lignin-based resin; pre-carbonization: pre-carbonizing the lignin-based resin in a non-oxidizing gas atmosphere to obtain a carbon material precursor 1; gas phase deashing: gas phase deashing the carbon material precursor 1 in a non-oxidizing gas atmosphere under the action of a halogen compound and / or a halogen element to obtain a carbon material precursor 2; calcination: crushing the carbon material precursor 2 and calcining it in a protective atmosphere to obtain a carbon material for a battery. The method of the present application effectively improves the expansion and foaming phenomenon during lignin carbonization, and the obtained carbon material has low ash content, controllable specific surface area, and excellent electrochemical performance. A lignin-based resin as mentioned above is also disclosed.
Owner:SHANDONG SHENGQUAN NEW ENERGY TECH CO LTD

Preparation method of high-thermal-conductivity copper-diamond composite material

The invention belongs to the technical field of material preparation, and particularly relates to a high-thermal-conductivity copper-diamond composite material preparation method which comprises the following steps of (1) raw material preparation, (2) SLM equipment preparation and preheating, (3) model printing, (4) heat treatment, (5) finish machining and (6) classified inspection and storage. The screened diamond powder is cleaned and dried through alcohol, workers can conveniently operate and use the diamond powder, manufacturing of the composite material is more accurate, SLM equipment is cleaned through a dust collector, machining operation of the composite material is convenient, the situation that the composite material carries scraps during machining is avoided, and through heat treatment, the machining efficiency is improved. The composite material can be conveniently processed and operated, the mechanical property of the material can be improved, the structure and the organization of the material can be adjusted, the defects of the material can be repaired and improved, workers can conveniently inspect through inspection and storage, and the probability that the composite material has problems during use is smaller.
Owner:HENAN HUIFENG DIAMOND

Preparation method of super-hydrophobic nano coating

The invention discloses a preparation method of a super-hydrophobic nano coating, and relates to the technical field of nano coatings, and the preparation method specifically comprises the following preparation steps: step 1, under the temperature condition of 20-50 DEG C, ultrasonically dispersing 1.5-3 parts of modified nano silicon dioxide in 60-80 parts of deionized water, adding 1-4 parts of modified graphene oxide, stirring at the rotating speed of 800-1000 r / min for 15-30 min, and then adding 1-3 parts of a dispersing agent, and stirring at the rotating speed of 800-1000 r / min for 20-30 min; adding 0.8-1.5 parts of a tin dioxide core / shell structure, and continuously stirring for 24-72 hours to obtain a super-hydrophobic nano coating solution; and 2, coating the surface of the cleaned substrate with the super-hydrophobic nano coating solution by adopting a spraying, brush coating, dip coating or spin coating method, and naturally airing to obtain the super-hydrophobic nano coating. According to the invention, hydrophobic groups are introduced to the surface of nano silicon dioxide, long-chain organic groups are connected to the surface of silicon dioxide, and the organic groups can reduce the surface energy of the coating and increase the contact angle of water drops on the surface of the coating, so that the hydrophobicity of the coating is improved.
Owner:GUANGDONG DASHUYING NEW ENERGY TECH CO LTD

Preparation method of temperature stimulation deformation reversible response soft robot polymer

The invention relates to the technical field of soft robot polymers, in particular to a preparation method of a temperature stimulation deformation reversible response soft robot polymer. Comprising the following steps: firstly, carrying out solution blending polymerization on linear semi-crystalline high-molecular polyethylene vinyl acetate and a peroxide initiator benzoyl peroxide to serve as a soft robot polymer matrix; a particle leaching method is used for making pores in a polymer semi-crystalline system, and the particle size parameter of a pore-foaming agent is adjusted to design the structural characteristics and pore morphology of a three-dimensional pore channel; finally, the linear molecules are subjected to mutual bonding bridging reaction to form the soft robot polymer with an entangled network cross-linked network and crystallization network structure. The soft polymer is prepared by constructing, regulating and controlling the three-dimensional porous structure, and the complex pore stress distribution of the porous structure aims at realizing high driving strain, so that the driving strain of the deformable soft intelligent porous driving material is regulated and improved, and adjustable driving performance and driving multifunctionalization are realized.
Owner:NANTONG UNIV +1

A drying rack for quickly drying film fibers

This utility model discloses a drying rack for rapidly drying membrane fibers, comprising: a support, a support rod, a drying rod, and hooks. The support rod is located on the support and has a hollow tubular drying rod with ventilation openings. The drying rod is connected to a ventilation device. A hook is located below the ventilation opening, and a baffle is provided between the hook and the ventilation opening. The hook is connected to the drying rod via an elastic element. This utility model, by providing ventilation openings on the drying rod, allows air to blow from top to bottom onto the suspended membrane fibers, accelerating drying and improving drying efficiency. By providing a baffle between the hook and the ventilation opening, ventilation is only activated when membrane fibers are suspended on the hook, preventing wasted air when all ventilation openings are open due to insufficient membrane fiber bundles, thus saving energy.
Owner:CHUZHOU JIUYING MEMBRANES TECH CO LTD

An oligopeptide derived from goose plasma protein for improving liver lipid metabolism disorder and application thereof

ActiveCN121949460BImprove pathological damageReduce Lipid Deposition
The application discloses a goose plasma protein-derived oligopeptide capable of improving liver lipid metabolism disorder and application thereof, and relates to the field of biotechnology.The goose plasma protein-derived oligopeptide capable of improving liver lipid metabolism disorder is screened by the application, and the amino acid sequence is GDWIVK.Animal experiment verification shows that the goose plasma protein-derived oligopeptide can effectively reduce the levels of triglyceride, total cholesterol and low-density lipoprotein cholesterol in serum and liver affected by high-fat diet, increase the content of high-density lipoprotein cholesterol, reduce liver lipid deposition and improve liver pathological damage.Meanwhile, the goose plasma protein-derived oligopeptide can regulate the structure and diversity of intestinal flora, increase the abundance of beneficial bacteria and the content of short-chain fatty acids in feces, reduce the inflammatory response of colon, and play a synergistic regulation role through the intestinal-liver axis.
Owner:HEFEI UNIV OF TECH

Pluggable semimetal-based non-sacrificial electrode and application thereof

The invention discloses a pluggable semimetal-based non-sacrificial electrode and application thereof, the electrode is prepared by taking halogen atom doped semimetal-based C3N4C (CN) 3 as a catalytic material, and attaching the catalytic material to a porous stainless steel conductive substrate in situ through high-temperature copolymerization. The semimetal-based non-sacrificial electrode has relatively strong acid and alkali corrosion resistance, thermal stability and carrier migration and separation capability, and the oxidation-reduction capability of the semimetal-based non-sacrificial electrode catalytic material can be further optimized by adjusting the doping type and proportion of halogen atoms; the method can be applied to oxidation reduction of electrolytes in plants and in-vivo plant power generation and supply output.
Owner:NANJING UNIV OF SCI & TECH

Negative active material, method for preparing the same, secondary battery, and electric device

The application discloses a negative active material, a preparation method of the negative active material, a secondary battery and an electric device, and the negative active material comprises a silicon-based material, a carbon coating layer arranged on the surface of the silicon-based material, and a titanium oxide layer arranged on the surface of the carbon coating layer, and the electron paramagnetic resonance spectrum of the negative active material has a characteristic peak at g=2.002-2.004. The application sets the titanium oxide layer containing oxygen defects on the surface of the carbon-coated silicon-based material, improves the rate performance on the basis of improving the initial coulomb efficiency and the cycle performance, and has a wide application prospect.
Owner:SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD

A kind of trace element coal gangue soil repair agent and preparation method thereof

The invention discloses a soil repair agent based on trace elements of coal gangue and a preparation method thereof, which belongs to the technical field of soil repair agents, and comprises the following steps: mixing dark fermentation strains with beneficial soil bacteria to obtain composite strains, coating the composite strains with starch, and then mixing with a bio-based foaming agent to obtain a composite foaming agent; mixing modified cellulose, a composite foaming agent, coal gangue powder and a gelling agent to obtain a hydrogel, and freeze-drying to obtain a loaded coal gangue particle aerogel; mixing the loaded coal gangue particle aerogel with trace elements, adding peat soil, lignite, vermiculite, and corn stalks for stirring, and drying and packaging to obtain a soil repair agent. The starch-encapsulated strains in the composite foaming agent have better stability and can be better propagated and developed in the soil; the encapsulated hydrogen-producing strains can better complete the dark fermentation reaction, increase the biohydrogen content in the soil, and restore soil fertility.
Owner:INNER MONGOLIA HEDE ECOLOGICAL ENVIRONMENT TECH CO LTD

A stator and rotor assembly and a powder-liquid mixing device

ActiveCN224422533UReduce invalid overlap areaImprove dispersion efficiency
This utility model relates to a stator-rotor assembly and a powder-liquid mixing device. A stator-rotor assembly includes at least one stator and at least one rotor, the rotor rotating relative to the stator to shear the material flowing through the assembly. The structure of a single stator includes a first disc with several flow holes along the circumference on its end face for material flow. The structure of a single rotor includes a second disc with several notches along the circumference on its end face for material flow; each notch is hollowed out, thus forming independent blades between adjacent notches. By configuring the stator and rotor, the shearing consistency of the stator-rotor assembly on the material can be improved, thereby increasing the dispersion efficiency; simultaneously, the small overlap area between the stator and rotor reduces the heat generation of the stator-rotor assembly.
Owner:WUXI RICH INTELLIGENT EQUIP CO LTD

Intelligent collecting robot capable of intelligently recognizing grape picking

The intelligent collecting robot comprises a base, a fixing frame and a transmission frame body, a supporting plate is hinged to the top end of the base, the fixing frame is hinged to the top end of the supporting plate, a lifting mechanism used for lifting a mounting frame is arranged at the top end of the base, and the mounting frame is mounted at the top end of the fixing frame. The device comprises a mounting frame, a sliding block is arranged in the mounting frame, a fixing frame is mounted at the top end of the sliding block, a transmission frame body is mounted at the top end of the fixing frame, a moving mechanism used for moving the position of the fixing frame is arranged above the fixing frame, and a conveying mechanism used for conveying grapes is arranged in the transmission frame body. A transverse plate is installed at the top end of the transmission frame body, a visual sensor is installed at the top end of the transverse plate, the device turns over through the supporting plate, then the height of the fixing frame is adjusted, the height of the transmission frame body is conveniently adjusted, and grapes with different heights are cut.
Owner:ANHUI HONGTU ROBOT TECH CO LTD

Intelligent pre-tightening pressure-absorbing energy-absorbing support net and application method

The present invention belongs to the technical field of underground engineering support, and specifically discloses an intelligent pre-tightening pressure-absorbing energy-absorbing support net and an application method, including: a mesh wire and a node hub device; the node hub device is arranged at the cross-connection node of four mesh wires; the node hub device includes: a shell, and a mesh wire installation module, a hot-melt fixing module and a rotation tensioning module arranged in the shell; the mesh wire installation module includes a circular ring, and a spring coil concentric with the circular ring is arranged inside the circular ring; through holes corresponding to the four mesh wires are arranged on the circular ring and the spring coil; the four mesh wires are respectively penetrated into the circular ring and the spring coil from their respective corresponding through holes in turn; the hot-melt fixing module can contact the mesh wire penetrated into the spring coil to achieve hot-melt fixing of the mesh wire; the rotation tensioning module can drive the spring coil to rotate. The present invention combines steel bars into a net or connects steel mesh sheets together through the node hub device, which can effectively reduce the probability of damage to the steel mesh.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Gain-adjustable millimeter wave low-noise amplification circuit and method

The invention provides a gain-adjustable millimeter wave low-noise amplification circuit and method, and is characterized in that the gain-adjustable millimeter wave low-noise amplification circuit comprises a low-noise amplification stage, a low-gain amplification stage, a high-gain amplification stage, a first transistor switch control module and a second transistor switch control module, the output end of the low-noise amplifier stage is connected with the low-gain amplifier stage or the high-gain amplifier stage through the first transistor switch control module, and the low-gain amplifier stage or the high-gain amplifier stage outputs a radio frequency output signal through the second transistor switch control module. The gain-adjustable low-noise amplification circuit structure can be applied to a millimeter wave frequency band, and the noise does not change greatly.
Owner:SYNERGY INNOVATION INST OF GDUT HEYUAN

High mobility spin field effect transistor and method of making the same

This invention discloses a high-mobility spin field-effect transistor (SFET), comprising a source electrode, a drain electrode, a gate electrode, a semiconductor channel, and a substrate. Compared to existing SFETs based on a single semiconductor channel, this semiconductor channel structure offers advantages such as tunable band structure, high mobility, tunable carrier concentration and type, and long spin diffusion length. Compared to traditional substrate-based SFETs, this invention introduces a substrate with piezoelectric properties, allowing for the modulation of carrier spin transport within the semiconductor channel through the surface polarization electric field of the substrate. This effectively reduces the turn-on or turn-off voltage and improves gate control. Compared to existing SFET fabrication processes, this invention optimizes the crystal quality of the spin tunneling layer, increases carrier spin polarization, thereby improving the device's on / off ratio and reducing operating current.
Owner:XIAMEN UNIV +1

Head needle positioner and use method thereof

The invention discloses a scalp needle positioner and a using method thereof. The scalp needle positioner is formed by connecting and combining a diameter-adjustable skull base band, a diameter-adjustable top pillow band, a diameter-adjustable frontal middle band and a vertical frontal top band through gaps. The structure can be adjusted according to the outline of the head of a patient, the needle inserting position is guided through the hole positions distributed in the positioner, it is ensured that acupuncture positions, acupuncture points and the like can correspond correctly and meet the requirements, and the popularization rate of the head acupuncture therapy is increased.
Owner:杨继若

Coordination regulation type high-stability aqueous organic flow battery and preparation method thereof

This disclosure provides a coordination-regulated, high-stability aqueous organic flow battery adapted for frequency regulation in thermal power energy storage and its preparation method. The preparation method includes: adding deoxygenated deionized water to organic anode active material and anode coordination regulator, introducing an inert gas, stirring, and adding a pH adjuster to adjust the solution pH, followed by stirring to form an anode electrolyte; adding deoxygenated deionized water to organic cathode active material and cathode coordination regulator, introducing an inert gas, stirring, and adding a supporting electrolyte, followed by stirring to form a cathode electrolyte; immersing an ion exchange membrane in a modification solution and stirring to obtain a modified membrane; immersing the modified membrane in an alkali metal solution to activate ion exchange sites; immersing the electrode in a doping solution for dispersion treatment and drying to obtain a doped electrode; using this doped electrode as the working electrode, a platinum sheet as the counter electrode, and a saturated calomel electrode as the reference electrode, and performing cyclic voltammetric activation in H2SO4 solution.
Owner:XIAN THERMAL POWER RES INST CO LTD +1

Method for preparing gasoline from plastic

The invention relates to the technical field of plastic resource utilization, and discloses a method for preparing gasoline from plastic. The method comprises the following steps: in an inert atmosphere, polyolefin plastic is subjected to a catalytic cracking reaction under the action of a first catalyst and a second catalyst, the first catalyst contains an active component and an optional carrier, the active component is at least one of a tungsten component, a zirconium component, an aluminum component and a niobium component, and the carrier is a mesoporous molecular sieve; the second catalyst is a microporous silicon-aluminum molecular sieve; the mass ratio of the usage amount of the first catalyst to the usage amount of the second catalyst is 1: (0.25-20). The catalyst used in the technical scheme can stably exist in air, is cheap and easy to synthesize, does not need the participation of co-reactants such as hydrogen, a solvent or olefin, and remarkably enhances the polyethylene plastic conversion rate and the gasoline yield at the same time.
Owner:EAST CHINA NORMAL UNIV

Culture medium for efficient genetic transformation of kidney beans and genetic transformation method

The invention provides a culture medium for efficient genetic transformation of kidney beans and a genetic transformation method, and belongs to the field of plant genetic transformation. The culture medium for efficient genetic transformation of kidney beans comprises a co-culture medium and a bud induction culture medium. The preparation method comprises the following steps: dissolving aluminum nitrate nonahydrate and magnesium nitrate hexahydrate, mixing and shearing with a sodium hydroxide solution, centrifuging, washing, adding deionized water, heating, reacting to prepare nano-carrier particles, and supporting titanium dioxide columns among layers of the nano-carrier particles by using tetrabutyl titanate as a raw material through a sol-gel method to prepare the nano-carrier particles. Compared with the prior art, the composite carrier has the advantages that the interlayer spacing of nano-carrier particles is obviously increased, more space is provided for loading ascorbic acid, and the effect of improving the ascorbic acid loading rate is further achieved; therefore, the anti-oxidation persistence of the prepared co-culture medium and bud induction culture medium can be improved.
Owner:WEIKE (QINGDAO) BIOTECHNOLOGY CO LTD

Preparation method of negative electrode material based on negative electrode aging hard carbon material

The invention relates to the technical field of batteries, in particular to a negative electrode material preparation method based on a negative electrode aged hard carbon material, which comprises the following steps: firstly, crushing and grading an aged hard carbon precursor to obtain particles with a preset particle size; the preparation method comprises the following steps: performing pretreatment such as acid washing, alkali washing, water washing and ethanol washing, mixing a purified precursor with a coating material in proportion to form a uniform coating layer, pre-sintering in a protective atmosphere, and preliminarily stabilizing a material structure by controlling parameters such as a heating rate; and carrying out specific surface area detection on the pre-sintered primary product, and dynamically adjusting pre-sintering process parameters according to the specific surface area detection to ensure that the pore structure of the material reaches the standard. And performing high-temperature carbonization treatment on the material meeting the standard so as to repair the carbon layer structure and improve the conductivity. And finally, performing quality judgment by detecting the first coulombic efficiency of a finished product. According to the invention, the first coulombic efficiency, the specific capacity and the cycling stability of the regenerated hard carbon material are improved, and the recycling of the aging material is realized.
Owner:SHANDONG AOYU POWER SUPPLY +1

A sodium titanate nanofiber / reduced graphene oxide composite electrode material, a preparation method therefor, and an application thereof

The application relates to a sodium titanate nanofiber / reduced graphene oxide composite electrode material and a preparation method and application thereof. The composite electrode material has a two-dimensional sheet structure, the particle size is 1-6 mu m, the thickness is 10-20 nm, is composed of a few-layer reduced graphene oxide and sodium titanate nanofibers with a diameter of 5-10 nm loaded on the reduced graphene oxide, and is prepared by taking the few-layer reduced graphene oxide as a template, uniformly loading titanium dioxide particles, and then carrying out hydrothermal treatment in an alkali solution. Compared with the prior art, the synthesis method is simple in process, easy to scale up, and high in controllability. As a negative electrode of a sodium ion battery or a positive electrode of a sodium battery, the sodium titanate nanofiber / reduced graphene oxide composite electrode material has the advantages of high initial coulomb efficiency, low working voltage, high capacity, excellent rate characteristics and cycle stability, and has a broad market application prospect.
Owner:FUDAN UNIVERSITY

Ballast railway tamping device

The invention discloses a ballast railway tamping device, which belongs to the technical field of railway maintenance and comprises a plurality of tamping components, each tamping component comprises a chassis, a transverse moving shaft is arranged on the upper portion of the chassis, swing frames are slidably connected to two sides of the upper portion of the transverse moving shaft, tamping picks are arranged on the swing frames, and a transverse moving mechanism is arranged on the upper portion of the chassis. The two sides of the transverse moving mechanism are connected with the swing frame through flexible shafts, the angle adjusting mechanism is arranged on the upper portion of the transverse moving mechanism, the lifting driving device is arranged above the swing frame and used for driving the swing frame to ascend and descend, and the tamping pickaxe is installed on the swing frame. The tamping pickaxe is driven by the lifting device to compact railway ballasts below the sleepers, so that the track structure is more stable, the safety and stability of train operation are ensured, and the situation that the tamping quality cannot be ensured by manual tamping operation is avoided.
Owner:ZHUZHOU JIACHENG TECH DEV CO LTD +1

Catalytic oxidation catalyst as well as preparation method and application thereof

The invention relates to the technical field of catalyst preparation and discloses a catalytic oxidation catalyst as well as a preparation method and application thereof. The catalytic oxidation catalyst comprises: a carrier, wherein the carrier is a regular carrier subjected to acid treatment; a coating attached to the carrier, wherein the coating contains a ZSM-5 molecular sieve and an optional metal oxide; the active component is dispersed in the coating, and the active component contains precious metal and optional alloy metal; wherein the particle size of the coating is 50-500 nm, the size of a mesoporous channel is 3-50 nm, the specific surface area is 300-600 m < 2 > / g, and the particle size of the active component is 1-8 nm. The catalytic oxidation catalyst disclosed by the invention has relatively high oxygen adsorption and activation capacities and high catalytic oxidation efficiency; the mechanical strength is high, and the device is suitable for high-airspeed and large-air-volume gas treatment conditions; and the coating matrix pore structure of the catalyst is adjustable, and the catalyst has the advantages of high quantitative adjustability, high raw material adaptability and the like.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Mechanical oil pumping device

The utility model relates to the technical field of commercial vehicle production and manufacturing, and provides a mechanical oil pumping device which comprises a pressing rod (1), a push rod (2), a positioning block (3), a pin shaft (4), a locking pin (5) and a force bearing support (6). The pressing rod (1) is connected with the push rod (2), the positioning block (3) is located at the end of the pressing rod (1), the pressing rod (1) is connected with the positioning block (3) through the pin shaft (4), and the positioning block (3) is connected with the force bearing support (6) through the locking pin (5). Wherein the push rod (2) can be connected with an oil pressing cap of the filter 7. The device is simple in structure, convenient to operate, small, exquisite and flexible, the labor intensity and the safety risk of operators can be reduced, and the production operation efficiency can be improved; furthermore, the structure of the oil pumping device can be adjusted, the oil pumping device can be suitable for oil pumping of filters of different vehicle types, and the oil pumping device has a wide application range.
Owner:HUBEI DAYUN AUTOMOBILE