480results about How to "Efficient preparation" patented technology

The invention belongs to the technical field of data generation, and discloses a virtual character training data generation method and system, and the method comprises the steps: analyzing a virtual character, and constructing the attribute, expression mode and application scene of the virtual character; based on the attribute, the expression mode and the application scene of the virtual character, training the large language model, and evaluating the generation effect after training; dynamically adjusting the proportion of the expression modes in the labeling data set according to the evaluation result, and updating the large language model based on the adjusted proportion; and according to the attribute, the expression mode and the target application scene of the target virtual character, generating corresponding dialogue content data by using the updated large language model, and obtaining virtual character training data. The method not only supports complex virtual character setting, but also has the advantages of high mobility and efficient preparation of multi-virtual character data.

The invention discloses a glucose response type insulin delivery system as well as a preparation method and application thereof, and belongs to the technical field of biological materials. The glucose response type insulin delivery system provided by the invention comprises a delivery carrier and a bioactive component encapsulated in the carrier, the delivery carrier is a metal polyphenol network formed by carrying out coordination reaction on epigallocatechin gallate and metal ions; the bioactive components comprise glucose oxidase, catalase and insulin. The glucose response type insulin delivery system provided by the invention can adjust the release of insulin according to the concentration of glucose in the surrounding environment, so that the blood glucose is maintained at a normal level.

The invention discloses an adsorption heat storage material with a multi-stage stepped pore structure and a preparation method of the adsorption heat storage material, according to the material, a metal foam matrix is combined with the multi-stage pore structure, and the storage and release efficiency of heat energy is remarkably improved. Specifically, the metal foam matrix is composed of a plurality of metal foam layers with different porosities, and the porosities are gradually increased in the heat source direction, so that the heat resistance is effectively reduced, and the diffusion of adsorbate is accelerated. The adsorbent coating is coated with an adsorption material mixture containing a template agent, and is subjected to drying and roasting treatment to form a multi-stage pore structure comprising macropores, mesopores and micropores, so that the adsorption diffusion speed and the adsorption capacity are improved. The material not only improves the heat energy storage and energy release capabilities, but also optimizes the diffusion rate of adsorbate. According to the preparation method, through simple and convenient processes such as splicing of the metal foam layer and coating of the adsorbent, the production cost is reduced, the preparation process is efficient and controllable, and wide application prospects are achieved.

The invention belongs to the technical field of lithium ion batteries, and discloses a multi-layer composite solid electrolyte and a preparation method and application thereof, the preparation method comprises the following steps: mixing a lithium salt A, a polymer and a solvent to obtain slurry A, and drying the slurry A to obtain a negative electrode side solid electrolyte; mixing a lithium salt B, a polymer, MOF and a solvent to obtain slurry B, coating a negative electrode side solid electrolyte membrane with the slurry B, and drying to obtain an intermediate product; and mixing a lithium salt C, a polymer and a solvent to obtain slurry C, coating the intermediate product with the slurry C, and drying to obtain the multi-layer composite solid electrolyte, the lithium salt A is prepared by mixing any one of LiBOB and LiDFOB with LIFSI; and the lithium salt C is prepared by mixing any one of LiDFP and LiNO3 with LIFSI. The prepared multi-layer composite solid electrolyte can improve the cycling stability and the voltage window of the battery.

The invention discloses a separation and extraction system for torreya grandis aril essential oil and an essential oil production line, and the system comprises a squeezing mechanism which comprises a mesh bag for containing torreya grandis aril and a squeezing disc; the distillation mechanism comprises a distillation retort and a steam guide assembly, the distillation retort is connected with a feeding pipe and a steam conveying pipe, the feeding pipe is communicated with the liquid outlet channel, and the steam guide assembly is used for guiding steam introduced into the distillation retort; the condensation mechanism is connected with the distillation retort through a condensation guide pipe, and distilled volatile oil is guided into the condensation mechanism together with steam to be condensed; the oil-water separation mechanism is connected with the condensation mechanism through a separation guide pipe, and the oil-water mixture output by the condensation mechanism is guided into the oil-water separation mechanism for oil-water separation and extraction. The essential oil separation and extraction system and the essential oil production line are suitable for torreya grandis planting fields with limited yield to extract essential oil, and the situation that torreya grandis aril is discarded as waste, and resources are wasted is avoided.

The invention relates to a preparation method of a spiral dislocation stacked imine covalent organic framework material. The preparation method comprises the steps of preparing an imine covalent oligomer and preparing the spiral dislocation stacked imine covalent organic framework material. The invention also provides the spiral dislocation accumulation imine covalent organic framework material obtained by the preparation method and application of the spiral dislocation accumulation imine covalent organic framework material in light absorption semiconductor materials. The preparation method provided by the invention is simple, convenient, universal and easy to implement, and the imine covalent organic framework material with the spiral dislocation stacking structure is obtained, is clear in material structure and good in crystallinity, is a novel topological structure, and has a good potential application prospect in the photoelectric field.

The invention belongs to the technical field of graphene material preparation, and particularly relates to a universal electrochemical preparation method of covalent functionalized graphene (CFG), which comprises the following steps: (1) in an oil seal state of light sealing oil, performing electrochemical intercalation treatment on a graphite electrode by using concentrated sulfuric acid; (2) after intercalation is completed, light sealing oil is injected into the electrolytic bath while concentrated sulfuric acid is discharged; (3) in the electrolytic bath, constructing a micro-liquid membrane reaction zone by using density and intermiscibility differences of three working liquids, namely light sealing oil, aqueous electrolyte and heavy sealing oil, and enabling the micro-liquid membrane reaction zone to be in contact with the intercalated graphite electrode to generate electrochemical oxidation to generate CFG; (4) controlling the micro-liquid membrane reaction area to directionally move relative to the intercalated graphite electrode, so that the whole intercalated graphite electrode is gradually and completely converted into CFG; and (5) putting the CFG structure after the reaction into a solvent, carrying out mechanical stripping to prepare a dispersion liquid of CFG, and drying to obtain CFG powder.

The invention discloses an intelligent integrated system for manufacturing a biological tissue engineering scaffold, relates to the technical field of biomedicine, and is used for improving the biocompatibility, mechanical strength and cell adhesion capacity of a biological scaffold. The plasma generator comprises a microwave generator, a precise electrode and an efficient gas flowing unit; the integrated manufacturing module comprises a 3D printing unit, a plasma enhanced chemical vapor deposition (PECVD) unit and a cooperative control unit; the monitoring and control system comprises an intelligent temperature and humidity sensor, a gas component monitor and an automatic control unit; the data management and optimization module comprises a biological safety evaluation unit, a personalized design and simulation unit, a material selection and management unit, a degradable material processing unit and a dynamic feedback and adjustment unit. According to the invention, low-temperature plasma treatment, 3D printing and PECVD technologies are fused, and a highly intelligent and integrated manufacturing platform is constructed.

The invention relates to the technical field of vacuum glass processing equipment, and particularly discloses a continuous vacuum glass edge sealing heating furnace which comprises a furnace body, a feeding area, a preheating area, a heating edge sealing area, a cooling area and a discharging area are sequentially arranged in the furnace body from left to right, and a plurality of furnace doors are arranged in the furnace body. The feeding area, the preheating area, the heating edge sealing area, the cooling area and the discharging area are separated through furnace doors, the upper ends and the lower ends of the feeding area, the preheating area, the heating edge sealing area, the cooling area and the discharging area are fixedly connected with rails, the two rails are slidably provided with movable clamping mechanisms, and the movable clamping mechanisms are used for fixing glass bricks. The glass brick semi-finished product is conveyed to the heating edge sealing area through the movable clamping mechanism, and edge sealing treatment on the semi-finished product is achieved. And then, the glass bricks are cooled in the cooling area through the heat recovery mechanism, meanwhile, the heat recovery mechanism redistributes released heat to the preheating area, preheating is provided for production of the next batch of glass bricks, and therefore energy is effectively saved.

The invention relates to the technical field of polymer separation and purification, in particular to a preparation method of a molecularly imprinted polymer for separating asiaticoside, and the method comprises the following steps: S1, under an anaerobic condition, sequentially adding asiaticoside and a functional monomer containing unsaturated double bonds and amido bonds into a reactor, and carrying out a reaction for 2-4 hours; carrying out self-assembly reaction on the asiaticoside and the functional monomer to obtain a prepolymer containing an asiaticoside structure and unsaturated double bonds; s2, continuing to add a cross-linking agent and an initiator into the reactor, so that the prepolymer is subjected to a polymerization reaction, and a mixed solution is obtained; s3, separating and filtering to obtain a precipitate, and washing to remove template molecules; and S4, collecting the asiaticoside molecularly imprinted polymer, and carrying out vacuum drying to obtain the asiaticoside-containing molecularly imprinted polymer. According to the present invention, with the molecular imprinting technology, the asiaticoside is specifically recognized by using the functional group so as to embody the specificity and the high selectivity of the method;

The invention discloses a continuous fiber reinforced co-extrusion die, a forming line body and a fiber reinforced foaming floor, and relates to the technical field of foaming floors, the continuous fiber reinforced co-extrusion die comprises a die body, the front end face and the rear end face of the die body are a mixed extrusion face and a core material feeding face respectively, and one side face of the die body is provided with a shell material feeding port; a core material supply channel penetrating through the mixed extrusion face and the core material supply face is formed in the mold body, a shell material supply cavity surrounding the core material supply channel is formed in the mold body, two fiber channels are formed in the mold body, the two fiber channels are symmetrically arranged up and down, and the fiber channels are arc-shaped bent channels. The forming line body comprises a continuous fiber reinforced co-extrusion die, a core material extruder and a shell material extruder; a shaping module, a vacuum water cooling group, an open type water cooling group and a traction machine are sequentially arranged on the mixed extrusion surface of the mold body. According to the invention, the overall strength and performance of the composite material are optimized, and uniform distribution and orientation of reinforced fibers are ensured.

The utility model discloses an efficient fermentation device for preparing bio-organic fertilizer, which relates to the technical field of bio-organic fertilizer production and comprises a fermentation tank, a rotating rod is rotatably arranged at the top of the fermentation tank through a tank cover, and a plurality of stirring plates are uniformly arranged on two sides of the rotating rod. An electric push rod and a driving assembly used for driving the rotating rod are arranged on the two sides of the top end of the fermentation tank respectively, a telescopic rod of the electric push rod is provided with a supporting plate through a Z-shaped plate, an N-shaped oxygen supply pipe is arranged in the supporting plate, the bottom end of the N-shaped oxygen supply pipe penetrates through the tank cover and is arranged in the fermentation tank, and a one-way valve is arranged at the bottom of the N-shaped oxygen supply pipe; a feeding assembly for adding organic fertilizer is arranged at the top of the tank cover; the oxygen supply device has the beneficial effects that the fermentation quality of the bio-organic fertilizer is improved, the phenomenon that the bio-organic fertilizer is blocked at the air outlet of the N-shaped oxygen supply pipe is avoided, the normal use of the oxygen supply device is ensured, the oxygen supply operation is ensured, and the quality of the bio-organic fertilizer is ensured.

The invention provides a method for efficiently preparing FGF5 homozygous knockout cashmere goats by combining a base editor with a somatic cell cloning technology. And an sgRNA site is designed. An sgRNA expression vector is constructed, the sgRNA expression vector and pCMV-AncBE4max are respectively transferred into fibroblasts of a down producing goat fetus, and the editing efficiency is analyzed. And optimizing an electrotransfection condition, and simultaneously transfecting the screened sgRNA expression vector and pCMV-AncBE4max into a down producing goat fetal fibroblast to obtain the FGF5 homozygous knockout cell strain. And preparing reconstructed embryos and FGF5 homozygous knockout cashmere goats. The average editing efficiency of the sgRNA site disclosed by the invention can reach 64.3 + / -8.1%. The average probability of FGF5 homozygous knockout cells is 69.0%. Wherein the homozygous probability is 58.6% on average. The lambing rate is 7%. The invention provides a theoretical basis and a research basis for cultivating high-yield and high-quality new varieties.

The invention provides a mesoporous substrate seepage-guided colloid self-assembly collaborative printing cross-scale micro-nano manufacturing method, which comprises the following steps: placing an open container containing colloid suspension in a closed environment for slow evaporation, and forming a mesoporous substrate with a flat surface in the container; a mesoporous base material is used as a substrate, colloidal suspension liquid is injected / jetted onto the substrate, colloidal liquid drops are rapidly spread and strongly imbibed by the substrate, so that colloidal particles in the liquid are induced to be rapidly assembled on the surface of the substrate, and finally an ordered colloidal photonic crystal structure is formed. The technology of combining the mesoporous base material with printing technologies such as slit coating, ink-jet printing and direct writing printing is utilized to realize ultrafast self-assembly of colloidal particles on the surface of the mesoporous base material, and the large-area patterned colloidal photonic crystal is obtained. The method is simple in process, more importantly, efficient, rapid and cross-scale preparation of the patterned colloid photonic crystal can be achieved, and the preparation time is shortened by two orders of magnitude on the premise that the quality of a colloid assembly is guaranteed.

The present invention belongs to the field of production equipment, and in particular, relates to a metal foil production system. It comprises: an upstream area for pretreatment; a load area for deposition preparation; and a downstream area for separation; the upstream area, the load area and the downstream area are provided with a conveying device; the carrier comprises a load surface; the upstream area is provided with a pretreatment device for preparing a transition layer on the surface of the load area of ​​the carrier; the load area is provided with a vapor deposition device, the vapor deposition device comprises a generating structure for generating pre-deposited metal and a guiding structure for guiding the pre-deposited metal, the pre-deposited metal generated by the generating structure is guided to the transition layer on the surface of the carrier through the guiding structure, the pre-deposited metal is a gaseous metal and / or a plasma metal; the downstream area is provided with a post-processing device for removing the transition layer. The present invention can realize the efficient and high-quality preparation of electronic-grade ultra-thin metal foil; the preparation process is simple and efficient, and can realize full automation.

The invention relates to the technical field of multifunctional super-hydrophobic materials, in particular to a photo-thermal super-hydrophobic anti-icing and deicing composite material based on a template collaborative ablation method, a preparation method of the photo-thermal super-hydrophobic anti-icing and deicing composite material and a photo-thermal super-hydrophobic anti-icing and deicing surface. The method comprises the following steps: uniformly dispersing photo-thermal nano-particles as a filler in a high-molecular polymer, forming a film with a micro-pit structure by using abrasive paper as a template through a pouring and curing film forming method, and forming nano-wrinkles or nano-particles similar to synapses on the micro-pit structure of the film through flame ablation treatment. The prepared photo-thermal super-hydrophobic anti-icing and deicing composite material based on the template collaborative ablation method has excellent photo-thermal and hydrophobic performance, can be used as a photo-thermal super-hydrophobic anti-icing and deicing surface, and is simple in preparation process, low in preparation cost and suitable for large-scale production.

The invention belongs to the technical field of veterinary drugs, and particularly relates to a 2, 3-disubstituted naphthoquinone compound as well as application and a preparation method thereof, the general formula of the 2, 3-disubstituted naphthoquinone compound is # imgabs0 #, and X is selected from C, NH, O and S; wherein when X is selected from C, an X-R1 substituent is represented as an aryl substituent; when X is selected from NH, R1 is selected from a hydrogen atom, C1-6 alkyl, C3-6 cycloalkyl, substituted aryl, substituted benzyl and substituted acyl; when X is selected from O, R1 is selected from a hydrogen atom, C1-6 alkyl, C3-6 cycloalkyl, substituted benzyl and substituted acyl; when X is selected from S, R1 is selected from C1-6 alkyl, substituted aryl and substituted benzyl; r2 is selected from C1-16 alkyl, substituted aryl, Ra-(CH2) n-, and Ra-CO-(CH2) n-; the series of compounds are novel in structure and good in antibody ectoparasite activity, are successfully applied to the field of veterinary drugs, and solve the long-standing problems of safety and toxicity; the synthesis process is simple, the conditions are mild, and various 2, 3-disubstituted naphthoquinone compounds can be efficiently prepared.

The invention discloses an atomic-scale catalyst for laser solid-phase synthesis as well as a preparation method and application of the atomic-scale catalyst. The preparation method comprises the steps that a solid-phase reaction system is formed, the solid-phase reaction system comprises a carbon-based material with a plurality of anchoring points on the surface and a metal salt precursor loaded on the carbon-based material, and the metal salt precursor is combined with the anchoring points; and carrying out laser irradiation on the solid-phase reaction system, so that the metal salt precursor is reduced to form the atomic-scale catalyst. The atomic-scale catalysts prepared by the method are diversified and comprise monatomic catalysts, diatomic catalysts, monatomic alloys, diatomic alloys, atomic clusters and the like. The preparation method is simple in process, high in universality and suitable for various carbon-based materials containing anchoring points and metal elements with catalytic activity, atomic-scale catalysts can be produced in batches, and the requirements for various catalysts in the fields of chemical industry, petroleum processing industry, energy, pharmaceutical industry, environmental protection and the like can be met.

The invention provides a composite material blade, a forming combined mold and a preparation method. The composite material blade comprises an upper outer layer, a lower outer layer, an inner continuous layer and a filling area, the forming combined mold is used for preparing the composite material blade and comprises a core mold, a cushion layer block, an outer compaction block and a filling strip, and the preparation method comprises the following steps that the outer surface of the core mold is laid with a composite material layer, mold pressing shaping is conducted, and the inner continuous layer is prepared; paving a composite material layer outside the inner continuous layer, and carrying out mould pressing and shaping to prepare one of an upper outer layer and a lower outer layer; paving a composite material layer at the joint of one of the upper outer layer or the lower outer layer and the inner continuous layer, and carrying out mold pressing shaping to prepare a filling area; and paving a composite material layer on the outer sides of the filling area and the inner continuous layer, and carrying out mold pressing shaping to prepare the other one of the upper outer layer and the lower outer layer. According to the method, the composite material blade with good internal densification quality and internal and external molded surface size precision can be simply and efficiently prepared.

The invention provides a photocatalytic composite material based on fly ash as well as a preparation method and application thereof, and belongs to the technical field of environment-friendly materials. According to the composite material, industrial waste fly ash and bismuth vanadate (BiVO4) are effectively compounded, so that the composite material shows excellent photocatalytic performance, especially can efficiently degrade organic pollutants such as formaldehyde under visible light irradiation, and has good stability and reusability. According to the composite material disclosed by the invention, the preparation cost is remarkably reduced, the resource utilization of the fly ash is also realized, and remarkable environmental protection and economic benefits are embodied. The material is particularly suitable for the fields of indoor air purification, wastewater treatment and other environmental pollution treatment, and can effectively improve air quality, protect human health and promote sustainable development. The photocatalytic composite material shows excellent catalytic efficiency in practical application, is high in adaptability and has a wide application prospect.

The invention provides an anti-tumor modification method of stem / progenitor cell-derived neutrophil, which comprises the following steps: extracting mouse bone marrow-derived Lin-progenitor cells and human umbilical cord hematopoietic stem / progenitor cells, modifying ER-Hoxb8 progenitor cells by gene editing, and inducing the ER-Hoxb8 progenitor cells into neutrophil; three modification strategies of chimeric antigen receptor CAR gene engineering modification, high expression MET gene modification and high expression of IFN-gamma while the TGFBR2 gene is stably knocked out are respectively adopted, and the anti-tumor phenotype of the neutrophil N1 is maintained. Compared with the prior art, the engineering neutrophile granulocyte has the following advantages that the engineering neutrophile granulocyte prepared by the method has the advantages of infinite sources, long-time preservation, safety, controllability, efficient and rapid preparation and the like; the engineered neutrophil can maintain the N1 antitumor phenotype and promote the antitumor function; the immunosuppression microenvironment of the solid tumor can be improved and the treatment effect can be improved by singly using or combining the immune checkpoint inhibitor.

The invention discloses a preparation method of a hydroxy ketone compound based on electrosynthesis and the hydroxy ketone compound prepared by the preparation method, and belongs to the technical field of preparation of hydroxy ketone compounds. The preparation method of the hydroxyl ketone compound based on electrosynthesis comprises the following steps: in a protective atmosphere, in an organic solvent, taking an epoxy compound as shown in a formula 1, an aryl iodide as shown in a formula 2 and a carbon monoxide source as reaction raw materials, and under an electrochemical condition and the action of an accelerant and a metal catalyst, carrying out electrosynthesis on the reaction raw materials to obtain the hydroxyl ketone compound based on electrosynthesis. Carrying out electroreduction carbonylation reaction to obtain a hydroxy ketone compound as shown in a formula 3; the reaction process is shown as a reaction formula (1). According to the method, metal powder is prevented from being used as a reducing agent, the operation method is simple and convenient, and the safety is good. # imgabs0 #

The invention discloses a method for improving the smelting yield of a vanadium-aluminum alloy, which comprises the following steps: S1, dividing vanadium oxide into a plurality of parts according to a certain weight ratio, and sequentially weighing a corresponding required reducing agent and a slag former in a gradient decreasing manner; s2, uniformly mixing the vanadium oxide with a reducing agent and a slagging constituent in sequence to obtain a mixture respectively; s3, adding the mixture into a smelting furnace, sequentially adding the mixture of each batch, paving and compacting, and then adding the mixture of the next batch; and S4, ignition smelting and normal-temperature cooling are conducted, water quenching and furnace disassembling are conducted after the surface of slag metal is skull, after surface treatment is conducted on an alloy ingot obtained through furnace disassembling, aftertreatment is conducted, and a vanadium-aluminum alloy finished product is obtained. By adopting the modes of gradient burdening, layered material distribution and heat regulation and control, the two-way mass transfer of a reducing agent in the aluminothermic reduction process and the effective regulation and control of local slag characteristics can be effectively realized, so that the thermodynamic conditions in the smelting process are improved, and the smelting yield of the vanadium-aluminum alloy is greatly improved.

The invention relates to a preparation method and application of a thermal shock induced ferrocobalt double-doped metastable phase nickel / nickel oxide heterostructure (Co, Fe-Ni / NiO / NF) composite electrode. The preparation method comprises the following steps: cutting and cleaning the foamed nickel substrate; the preparation method comprises the following steps: growing a nickel-cobalt-iron layered double hydroxide nanosheet on a foamed nickel substrate through a constant-voltage deposition method; nickel-cobalt-iron prussian blue analogue nanoparticles grow in situ on the surface of the nickel-cobalt-iron layered double hydroxide nanosheet through an ion exchange method; and preparing the Co, Fe-Ni / NiO / NF composite electrode through a thermal shock method. The composite electrode has excellent catalytic activity and stability as a working electrode for hydrogen evolution and oxygen evolution reactions. The composite electrode can be directly used as a cathode and an anode of an anion-exchange membrane electrolytic cell to efficiently catalyze a full-water decomposition reaction at different temperatures, and the electrolytic cell can stably operate for 1000 hours and 240 hours under the current densities of 0.1 A cm <-2 > and 1.0 A cm <-2 > respectively, so that the composite electrode has a good application prospect.

The invention relates to a double-margin-plate blade interlayer cathode partition electrifying full-profile electrolytic machining device and method, and belongs to the technical field of electrolytic machining. A blade basin / blade back sandwich type cathode in the device is an integrated cathode composed of a blade crown cathode, a blade body cathode, a tenon cathode and two insulating layers. The cathodes in the integrated sandwich type cathode are insulated from one another, partitioned electrification can be achieved, and the electrification state of each cathode is matched with the feeding direction of the integrated sandwich type cathode. In the machining process, the integrated sandwich type cathode is firstly fed in the blade body direction, the blade body cathode is powered on, other cathodes are powered off, and blade body profile machining is conducted; and then, the feeding direction of the integrated sandwich type cathode is converted into the blade crown or tenon direction feeding in situ, a blade crown cathode or a tenon cathode is powered on, other cathodes are powered off, and blade crown or tenon machining is carried out. The electrolytic machining of the whole profile of the double-margin-plate blade can be completed through one-time clamping and one machining procedure, the machining efficiency and the machining quality are greatly improved, and good practical significance is achieved.

The invention discloses a preparation method of high-specific-surface-area, high-dispersion and high-purity nano calcium carbonate, which comprises the following steps: S1, calcining limestone, digesting the lime and water in proportion, and screening to remove gravel; s2, ammonium salt or ammonia water is added into the obtained lime slurry, and the solid content is adjusted; s3, layering the lime slurry after standing, and then concentrating to obtain concentrated lime slurry; s4, putting the concentrated lime slurry into a carbonization tower, and carrying out carbonization reaction by controlling the temperature, the stirring rate, the carbon dioxide concentration and the carbon dioxide flow; s5, when over-carbonization is achieved, obtaining a nano calcium carbonate suspension; s6, standing and settling the suspension, and removing upper-layer water to enable the solid content to be within a certain range; and S7, adding stearic acid into the suspension liquid for surface modification, and carrying out filter pressing, drying, crushing and sieving on the obtained suspension liquid to obtain the nano calcium carbonate powder. The method is low in raw material cost, economical, environmentally friendly, simple in control step, short in carbonization time, high in production efficiency and convenient for industrialization.

The invention discloses a self-supporting carbon electrode based on a wood-bamboo material, a preparation method of the self-supporting carbon electrode and application of the self-supporting carbon electrode in manufacturing of a supercapacitor electrode. The preparation method comprises the following steps: (1) fully carbonizing wood and bamboo chips with through pores in an inert atmosphere to obtain wood and bamboo carbon chips; (2) soaking foamed nickel in a solution containing cobalt acetate and nickel acetate, then taking out and airing, wrapping the wood-bamboo carbon sheet, and extruding the foamed nickel under the pressure of 5-15kN / m < 2 > to enable the foamed nickel to be in full contact with all the surfaces of the wood-bamboo carbon sheet; and (3) fixing the foamed nickel-coated wood-bamboo-carbon sheet obtained in the step (2) on a first conductive support as a working electrode, placing the working electrode, a counter electrode and a reference electrode in a molten salt electrolyte in an inert atmosphere for electrolysis, applying a voltage of-2.1 to-2.3 V to the working electrode, carrying out electrolysis for 8-12 hours to realize pore forming and graphitization, and after the electrolysis is completed, taking out the foamed nickel-coated wood-bamboo-carbon sheet. And taking out the wood-bamboo carbon sheet sample from the foamed nickel, washing and drying to obtain the self-supporting carbon electrode.

The embodiment of the invention provides an exposure system, an exposure method, a diffractive optical element and intelligent head-mounted equipment. Wherein the exposure system comprises a metasurface device and an exposure substrate, the exposure substrate is located on the light emitting side of the metasurface device, and the center of the metasurface device and the center of the exposure substrate are located on the same optical axis; the metasurface device is configured to enable incident linearly polarized light LP to form right-handed circularly polarized light RCP and left-handed circularly polarized light LCP, wherein the propagation directions of the right-handed circularly polarized light RCP and the left-handed circularly polarized light LCP deflect by an angle theta relative to the optical axis; the exposure substrate is located in an overlapping area of the right-handed circularly polarized light RCP and the left-handed circularly polarized light LCP, and the right-handed circularly polarized light RCP and the left-handed circularly polarized light LCP can form an overlapped interference light field on the exposure substrate, so that the polarization holographic grating is manufactured on the exposure substrate.

The invention provides a composite coating coated on the surface of ultrathin flexible glass. The composite coating comprises a composite buffer layer and a hardened layer, wherein the hardened layer material comprises functional resin, a photoinitiator and a solvent; the composite buffer layer material comprises functional resin, a resin monomer, an active monomer, a photoinitiator and a solvent. The invention also provides a glass cover plate. The glass cover plate comprises ultrathin flexible glass and a composite coating coated on the surface of the ultrathin flexible glass, the composite buffer layer in the composite coating covers the surface of the flexible glass. Through the design of the coating structure and the components, compared with a multi-layer structure, the number of layers of the coating is reduced, the shrinkage rate of the coating can be reduced, and the mechanical property of the product is improved.

The invention provides a method for calibrating contact parameters of micron-sized spherical aluminum powder for an energetic material, and the basic principle of the method is that discrete element simulation and experiment are combined, errors of a simulation repose angle and an experiment repose angle are compared, different calibration sequences are adopted for different errors, and the contact parameters of micron-sized spherical aluminum powder for the energetic material are calibrated. And gradually completing the contact parameter calibration of the micron-sized spherical aluminum powder for the energetic material. According to the method, it is proposed for the first time that for micron-sized spherical aluminum powder, four contact parameters including the collision recovery coefficient, the sliding friction coefficient, the rolling friction coefficient and the adsorption energy among particles need to be calibrated, and the proper coarsening range of the aluminum powder during modeling, the calibration sequence under different conditions and the contact parameter calibration range are defined for the first time; according to the method, the contact parameter calibration workload of the micron-sized spherical aluminum powder is reduced, and efficient preparation of the energetic material is promoted.