694results about How to "Complete structure" patented technology

The invention relates to the field of milling, in particular to a modeling method and system for a morphology model of a milling surface, and the method comprises the steps of data collection, data preprocessing, feature extraction, model construction and model verification and optimization. According to the modeling method and system, various actual factors in milling are fully considered, including tool abrasion, cutting force vibration, workpiece material non-uniformity and the like, the fitting degree of the model and the actual milling surface appearance is improved, and the microscopic geometrical characteristics of the machining surface can be reflected more accurately; a machine learning algorithm is adopted to construct a model, so that a complex milling process parameter combination relationship can be flexibly processed, the applicability and accuracy of the model under different milling process parameters are improved, and accurate evaluation of part performance and optimization of a machining process are facilitated; the system is complete in structure, all the modules are clear in division of labor, and the construction, verification and optimization process of the morphology model of the milling surface can be efficiently achieved.

The invention provides a structure capable of controlling a large-volume water gate crack and a construction method thereof, and belongs to the technical field of water gates. The structure comprises a gate bottom plate and a gate pier which are formed by pouring concrete, and the gate pier is arranged above the gate bottom plate; hole cavities are at least formed in the gate piers and reserved in the concrete pouring process. The hole cavity is used as a self-constrained stress hole; and the tough material is used for absorbing stress, is filled in the pore cavity and is connected with the inner wall of the pore cavity. The method comprises the steps of S1, construction preparation; s2, foundation treatment; s3, gate bottom plate construction; s4, gate pier construction: S41, construction lofting; s42, gate pier reinforcing steel bars are bound and installed; s43, a gate pier formwork is erected above the gate bottom plate; s44, a hole forming device is installed at the designed position; s45, concrete pouring, vibrating and curing are conducted; and S46, after initial setting of the concrete, the hole forming device is pulled out of the pipe, and a formed hole cavity is filled with a tough material. The sluice pier crack can be effectively controlled, and the use durability and safety of the sluice are improved.

The utility model discloses a full-prefabricated assembly type concrete frame structure in the technical field of prefabricated building structures. The full-prefabricated assembly type concrete frame structure comprises connecting stand columns, upper stand columns, cross beams, column end splicing pieces, supporting rods and jacking bolts. The connecting stand column and the protruding block form a T-shaped structure. The upper upright post and the cross beam are straight rods; the column end splicing piece and the beam end splicing piece are locked into an overall stress structure through the locking plate, the supporting barrel and the supporting nut are locked through the supporting rod, a prefabricated piece can be used, a butt joint position anchoring device is additionally arranged, splicing positions can be aligned more quickly, the splicing precision and speed are improved, the construction efficiency is improved, and the construction cost is reduced. Due to the fact that the structure is simple, the steel bars are accurately pre-embedded in the prefabrication process, site construction is not needed, the steel bar embedding accuracy is greatly improved, and construction quality and construction convenience are improved; the cast-in-place work is reduced, the prefabrication rate and the construction efficiency can be improved, and therefore the construction cost is reduced.

The invention relates to the technical field of concrete preparation, in particular to moisturizing anti-cracking high-ductility concrete and a preparation method thereof. The moisturizing anti-cracking high-ductility concrete is prepared from the following components: 350 to 450 parts of ordinary Portland cement, 200 to 300 parts of fly ash, 30 to 50 parts of silica fume, 250 to 350 parts of quartz sand, 0.5 to 1 part of a water reducing agent, 10 to 20 parts of an expanding agent, 0.1 to 0.3 part of a retarder, 0.5 to 1 part of a thixotropic lubricant, 0.2 to 0.7 part of a modified nano material, 0.7 to 3 parts of a modified composite curing agent, 5 to 10 parts of an anti-cracking agent, 5 to 12 parts of polymer fiber and 180 to 220 parts of water. The high-moisture-retention high-water-retention concrete has the characteristics of high moisture retention and high water retention, is beneficial to maintaining the internal humidity balance, reducing cracks generated by drying shrinkage, improving the durability of the concrete, and remarkably reducing the cracking risk of the concrete in the hardening process, so that the concrete structure is more complete, the safety of the structure is improved, and the service life of the structure is prolonged.

The invention discloses a lifting sliding type shock insulation groove cover plate structure and a using method thereof.In an earthquake, a shock insulation device impacts the lower end of a first rod body and the front end of an optical axis, the lower end of the first rod body is pushed, and the first rod body and the optical axis synchronously move in the direction of a circular through hole of a fixed linear bearing and a circular through hole of a fixed frame; an X-shaped frame of the cross lifting mechanism is gradually changed into a small angle from a large angle, and drives an upper cover plate to be lifted upwards without being separated from an optical axis, so that the required displacement space of the seismic isolation device under the action of seismic force is realized; a displacement space is provided, and meanwhile, the cover plate is ensured not to fall into the shock isolation groove, so that the normal function of the shock isolation device is not influenced; according to the earthquake isolation groove, the use requirement of daily bearing can be met, the structure can be kept intact and not damaged after an earthquake occurs, repeated use is achieved after the earthquake isolation groove is reset manually, and the risk that the earthquake isolation groove falls into the earthquake isolation groove is avoided.

The invention relates to the field of building materials, and particularly discloses a fireproof plate and a preparation method thereof. The fireproof board comprises a base material, reinforcing layers wrapping the two sides of the base material and fireproof coatings coating the outer surfaces of the two sides of the board, the base material comprises wood flour, silicate compounds and phenolic resin adhesives, the two sides of the base material are wrapped with glass fiber mesh cloth to serve as the reinforcing layers, and the surfaces of the base material are coated with the fireproof coatings; the fireproof coating is prepared from the following raw materials in parts by weight: 20 to 30 parts of hollow glass beads, 10 to 15 parts of ammonium polyphosphate, 5 to 10 parts of nano metal oxide, 10 to 15 parts of magnesia, 5 to 10 parts of tetraethoxysilane, 15 to 30 parts of epoxy resin and 30 to 40 parts of water. The composition disclosed by the invention has the advantages of fire prevention and high temperature resistance.

The invention relates to the technical field of coating materials, in particular to an anti-corrosion epoxy composite coating and a preparation method thereof. The anti-corrosion epoxy composite coating is prepared from the following raw materials in parts by mass: 40 to 60 parts of epoxy resin, 10 to 20 parts of alkoxy silane, 4 to 6 parts of pigment, 1 to 4 parts of auxiliaries, 2 to 6 parts of solvents, 14 to 18 parts of hexagonal boron nitride type preservatives and 10 to 30 parts of curing agents, and the hexagonal boron nitride type preservatives contain hexagonal boron nitride and polythiophene. According to the anti-corrosion epoxy composite coating, the defect that hexagonal boron nitride particles are prone to agglomeration can be overcome, and the anti-corrosion epoxy composite coating has more excellent anti-corrosion performance.

The invention discloses a pre-separation-free method for directly repairing and regenerating a retired lithium ion battery, which comprises the following steps of: after completely discharging a waste lithium ion battery, disassembling and stripping a positive electrode material belt; mixing a lithium source, a reducing agent and a dipole aprotic solvent to prepare a lithium source solution; mixing the positive electrode material strip with a lithium source solution, carrying out heating reaction at 60-100 DEG C, and after the reaction is finished, carrying out centrifugation and screening to obtain a mixed solution containing a lithium source, a dipole aprotic solvent and a binder, a regenerated precursor and a current collector; and mixing the regenerated precursor with lithium carbonate, and calcining to obtain the regenerated lithium battery positive electrode material. The method provided by the invention can realize repair and regeneration of the positive electrode material while separating the positive electrode material, the binder and the current collector, overcomes the complex operation problem of separation of pretreatment and regeneration processes in a traditional hydrothermal regeneration process, and simplifies the process flow.

The invention discloses a blood genome DNA extraction kit and an extraction method, and belongs to the technical field of nucleic acid extraction. The DNA extraction kit comprises a lysis solution, a first rinsing solution, a second rinsing solution and an eluent, wherein the lysate is prepared from the following components: 5.5 to 6 M of guanidine hydrochloride, 0.2 to 0.3 M of NaCl, 0.01 to 0.015 M of EDTA (Ethylene Diamine Tetraacetic Acid), 0.01 to 0.015 M of glucan, Triton X-100 with the volume concentration of 1.5 to 2 percent, 0.06 to 0.1 M of dithiothreitol, Tween-20 with the volume concentration of 5 to 10 percent and 10 to 50 mM of trehalose. The components of the lysate in the kit are optimized, through the synergistic effect of the components, the cell lysis efficiency is remarkably improved, meanwhile, DNA molecules higher in purity, more complete in structure and higher in extraction yield can be obtained, and therefore the kit has good application prospects.

The invention discloses a core-shell structure Au-coated CeO2 nano-catalyst and a preparation method and application thereof, and belongs to the technical field of core-shell structure catalysts.The preparation method of the catalyst comprises the following steps that S1, a chloroauric acid solution and a low-concentration cerium chloride solution are added into deionized water and stirred and mixed at the temperature of 5 DEG C, then an ammonia water solution is rapidly added, stirring and mixing are conducted at the temperature of 5 DEG C, and a mixed solution is obtained; quickly adding a high-concentration cerium chloride solution, and continuously stirring for 30 minutes to obtain a mixed solution; s2, carrying out centrifugal separation on the mixed solution to retain a precipitate, washing the precipitate with deionized water and absolute ethyl alcohol, and carrying out freeze drying to obtain a catalyst precursor; s3, performing cleaning treatment and annealing treatment on the catalyst precursor, and cooling to room temperature to obtain a core-shell structure Au-coated CeO2 nano-catalyst; when the catalyst is applied to catalytic synthesis of the BODIPY fluorescent dye, excellent catalytic performance and recycling performance are shown, and the yield of the BODIPY fluorescent dye can be remarkably increased.

The invention provides a display panel and a display device. The display panel comprises a substrate, a packaging layer and a touch control layer, wherein the packaging layer and the touch control layer are sequentially arranged on the substrate in a stacked mode; the substrate comprises a hole opening area and an isolation area surrounding the hole opening area; the touch layer is provided with at least one slot, the slot is located in the isolation area, the slot extends from the surface, away from the substrate, of the touch layer to the direction of the substrate, and the slot penetrates to the surface, away from the substrate, of the packaging layer to the maximum extent. According to the display panel, the structure of the touch layer of the isolation area is not continuous, stress is dispersed, stress concentration is avoided, then the problem that in the manufacturing process of the display panel, due to stress concentration, a film layer is peeled off or cracks appear is solved to a certain extent, the display effect of the display panel is guaranteed, and the display effect of the display panel is improved. And the yield and the product competitiveness of the display panel are improved.

The invention relates to an extraction method of oat bran protein, which comprises the following steps: mixing HBD and HBA according to different molar ratios, and carrying out magnetic stirring until a clear and transparent liquid is formed; the preparation method comprises the following steps: cleaning oat with deionized water, drying at 40 DEG C until the water content is 10%, crushing, sieving with a 60-mesh sieve, and taking an oversize product of the 60-mesh sieve as oat bran; the preparation method comprises the following steps: mixing oat bran and n-hexane (g / ml) according to a ratio of 1: 5, magnetically stirring for 3 hours at room temperature at 600 rpm, centrifuging for 10 minutes at 4000 rpm, degreasing for 3 times, and naturally volatilizing and airing to obtain degreased oat bran; mixing the degreased oat bran and the DES solution in a vortex manner according to a solid-to-liquid ratio of 1: 10, stirring for 60 minutes at the temperature of 50 DEG C and at the speed of 600rpm, cooling to room temperature, and centrifuging for 10 minutes at the speed of 3500rpm; taking the supernatant, extracting the precipitate twice by using the fresh DES in the same extraction process, merging the obtained supernatant, filling the merged supernatant into a dialysis bag, dialyzing at the temperature of 3,500 D4 DEG C for about 3 days by molecular weight closure, and freeze-drying the obtained suspension to obtain crude protein powder.

The invention discloses a shield segment prefabrication method and a production line, and relates to the technical field of shield segment prefabrication production. The shield segment prefabrication method comprises the steps that concrete is poured into a shield segment prefabrication mold; in the length direction of the prefabricated shield segment mold, a plurality of sequentially-arranged temperature monitoring intervals are obtained through marking, and the multiple temperature monitoring intervals jointly cover concrete; the concrete and the prefabricated shield segment mold are put into a steam curing kiln; steam curing is conducted on the concrete, and temperature information of the concrete corresponding to the temperature monitoring intervals is obtained through the temperature monitoring intervals; adjusting steam curing parameters of the steam curing kiln according to the temperature information; and film covering maintenance is conducted, and prefabrication of the shield segment is completed. According to the shield segment prefabricating technology, a whole set of systematic shield segment prefabricating technology is formed from concrete pouring, temperature monitoring, steam curing and later film covering curing, the prefabricating process of the shield segment is optimized, and the quality of the prefabricated shield segment is improved.

The invention provides a dry-wet cycle resistant composite soil stabilizer and a preparation method thereof. The curing agent is prepared from the following raw materials in parts by weight: 5 to 10 parts of polyacrylamide, 20 to 30 parts of cyclodextrin star derivative, 5 to 10 parts of polyvinyl alcohol, 5 to 8 parts of inorganic salt, 5 to 8 parts of sodium silicate, 10 to 15 parts of waterborne epoxy resin emulsion, 1 to 3 parts of polyoxypropylene triamine and water; the use amount of the water enables the solid content of the dry-wet cycle resistant composite soil stabilizer to be 25-60wt%; the cyclodextrin star derivative is prepared by carrying out esterification reaction on carboxymethyl-beta-cyclodextrin and methoxypolyethylene glycol according to the molar ratio of carboxyl to hydroxyl of 1: (1.1-1.2) under the action of a base catalyst; and the weight-average molecular weight of polyethylene glycol monomethyl ether is 1000 to 1500 g / mol. A plurality of grafting chains of the cyclodextrin star-shaped derivative disperse expansion and shrinkage stress of soil to different directions in the dry-wet cycle process, so that damage to a molecular structure due to stress concentration is avoided.

The invention belongs to the field of metal materials, and discloses a preparation method of porous iron, which specifically comprises the following steps: step 1, granulating iron powder, PMMA (polymethyl methacrylate) powder and carbon powder to obtain granulated powder; 2, mixing the granulation powder obtained in the step 1 with solid wax which is solid at normal temperature to obtain a mold pressing material; 3, the mold pressing material prepared in the step 2 is subjected to compression molding, and a green body is obtained; and 4, the green body obtained in the step 3 is degreased, burnt, reduced and sintered, and the finished porous iron is obtained. According to the porous iron, the raw materials are firstly granulated and then mixed with the PE wax, so that the pore effect of the finished product in both macroscopic and microscopic levels is greatly improved, and meanwhile, the invention further discloses the porous iron.

The invention discloses an extraction method and application of bovine bone collagen, and belongs to the technical field of collagen extraction. The extraction method comprises seven steps of pretreatment, degreasing, decalcification, acid treatment, enzymolysis, crude product preparation and purification, optimal test conditions and reagents are selected in each step, cattle bones are subjected to degreasing and decalcification pretreatment by adopting a specific method, fat and inorganic mineral calcium salt are effectively removed, and meanwhile, the activity of collagen components can be furthest protected; the extraction rate and the product quality of the collagen are improved; in addition, the mode of combining enzymolysis and acid treatment is adopted, the optimal reaction condition is regulated and controlled, high-activity collagen is obtained to the maximum extent, and the prepared high-purity and high-quality bovine bone collagen can be further applied to the fields of health food and cosmetics.

The invention provides a method for improving fluidity of weld metal in friction stir welding of dissimilar aluminum alloy, and belongs to the technical field of friction stir welding of dissimilar metal. The method comprises the following steps that 7075 and 6061 aluminum alloy plates are in butt joint and fixed, and friction stir welding is conducted; and the ratio of the length of a stirring needle for friction stir welding to the thickness of the aluminum alloy plate is 0.675-0.725. The metal fluidity and hardness distribution uniformity of a welding joint of dissimilar aluminum alloy friction stir butt welding are influenced by regulating and controlling the needle length of the stirring needle. And when the ratio of the length of the stirring needle to the thickness of the plate is 0.7, the elliptical onion ring formed in the nugget zone of the welding joint is complete in structure, the number of circles is large, and the whole position is moderate, so that the weld metal fluidity of the welding joint is better, and the hardness distribution is more uniform.

The invention discloses a method for preparing open-cell zeolite molecular sieve homogeneous dispersion liquid under mild conditions. The method comprises the following steps: dispersing a molecular sieve containing a template agent in a quartz container filled with methyl pyrrolidone and hydrogen peroxide, and carrying out ultraviolet radiation on a solution in a continuous stirring state to obtain the activated open-pore zeolite molecular sieve dispersion liquid. According to the method provided by the invention, the organic template agent in micropores of the zeolite molecular sieve nanosheets or nanoparticles can be effectively removed at a temperature close to room temperature, the operation is simple, the condition is mild and pollution-free, and the problem that the zeolite molecular sieve nanosheets or nanoparticles are seriously agglomerated during traditional high-temperature roasting and pore opening is effectively solved. The highly dispersed open-pore zeolite molecular sieve nanosheet or nanoparticle dispersion liquid has a wide application prospect in construction of a two-dimensional zeolite molecular sieve membrane or a mixed matrix membrane.

According to the method, joule heat is adopted for high-temperature gasification and flash evaporation of impurity metal in the waste lithium battery graphite leaching residues, synchronous deep impurity removal and metal removal and graphite lattice structure repair are achieved, traditional acid leaching, multi-step impurity removal, long-time high temperature and other multi-step procedures are replaced, the highest graphite purity reaches 99.7%, and the method is suitable for industrial production. The purity of the lithium carbonate reaches up to 99.5%, a large amount of greenhouse gas and high-salinity wastewater are prevented from being discharged, impurity metal is directionally refined and purified into the battery-grade lithium carbonate material, and an efficient, green and economical closed-loop treatment method and a high-value utilization method are provided for treating the waste lithium battery graphite leaching residues and battery-grade precursors.

The invention relates to a preparation method of a sodium alginate composite hydrogel microneedle for treating pathological scars, and belongs to the technical field of hydrogel microneedles, the microneedle takes sodium alginate as a main material, the sodium alginate is methylated to obtain methylacryloylated sodium alginate AlgMA, hollow manganese dioxide nanoparticles loaded with matrix metalloproteinase are added, and the microneedle is prepared by a hydrothermal method. A hydrogel microneedle filling solution is obtained; the preparation method comprises the following steps: transferring the hydrogel microneedle into a PDMS microneedle mold, carrying out negative pressure vacuum bubble removal, drying and concentrating twice in a drying oven, carrying out photopolymerization crosslinking, forming a solid hydrogel microneedle tip, adding a 20% PVA solution, and drying in the drying oven to form the microneedle substrate, and the preparation method is simple, convenient and efficient, has industrial application potential, and is suitable for the scenes of drug delivery, skin care and the like; according to the application of the sodium alginate composite hydrogel microneedle in pathological scar drug delivery, the sodium alginate composite hydrogel microneedle has excellent mechanical strength and biocompatibility, and painless and noninvasive drug delivery can be carried out on the surface of scar skin.

The invention provides an integral forming method and device for a pressure accumulator diaphragm capsule, and the method comprises the following steps: sleeving a movable female die into a pipe blank part, and adjusting the distance between the movable female die and a fixed female die; a high-pressure fluid medium is introduced through an internal flow channel of the connecting rod, and the pressure and loading time of the high-pressure medium are regulated by a pressure regulating device; the positions of the movable core head, the fixed sealing head, the pre-expansion limiting die and the movable female die are kept immovable, and the pressure regulation and control device is adjusted to unload the pressure of the high-pressure medium; the pre-expansion limiting die is separated in the radial direction and rotates to be separated from the pipe blank part; the movable female die moves in the axial direction to form a single waveform; the movable female die moves progressively in the axial direction, and the movable core head moves in the axial direction as well; and forming of a second waveform and a subsequent waveform is completed. According to the method, the defects of welding deformation, weld joint gouges, weld joint surface oxidation color, weld joint black spots and joint internal oxide inclusion caused by a traditional welding method are overcome, the quality control difficulty in the production process is reduced, and the production efficiency and the production quality of the diaphragm capsule are remarkably improved.

The invention discloses a synthesis and purification method of electronic grade phosphorane, which relates to the technical field of phosphorane synthesis, and has the advantages that impurities such as metal oxides and carbides in a silicon carbide ceramic substrate are removed by selecting the silicon carbide ceramic substrate and performing high-temperature annealing treatment, so that the atomic arrangement of the substrate is more regular and ordered; compared with the prior art, the method has the advantages that the gallium phosphide crystal structure is more complete, so that the gallium phosphide crystal structure has higher structural stability, meanwhile, after impurities are removed, the interaction between the substrate and reactants in a high-temperature reaction environment is more controllable, the chemical stability is enhanced, a firm and reliable base is provided for growth of gallium phosphide crystals, and by adopting the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate, the yield of the gallium phosphide crystal is increased. The production of waste gas is reduced by utilizing the extremely low volatility of the gallium phosphide, and meanwhile, the reaction rate between hydrogen phosphide and hydrogen is accelerated by introducing glucose oxidase for catalytic reaction, so that the gallium phosphide crystal is promoted to efficiently and directionally grow on the silicon carbide ceramic substrate, and the product quality and the production efficiency are improved.

The invention discloses a hydrogen-corrosion-resistant coating material for a hydrogen-rich electrolyte environment and a preparation method thereof, and relates to the technical field of hydrogen-corrosion-resistant coating materials, the coating material comprises the following components by weight: a metal matrix reinforcing material: 30%-50% of nickel and 5%-10% of cobalt; the ceramic particles comprise 10%-20% of aluminum oxide and 5%-15% of The coating material disclosed by the invention shows excellent corrosion resistance, wear resistance and hydrogen embrittlement resistance in a hydrogen-rich electrolyte environment. The nickel-cobalt alloy layer is kept stable at high temperature and high pressure, hydrogen permeation is blocked, and material degradation is prevented. Aluminum oxide and silicon carbide improve the hardness and wear resistance of the coating, and the coating is kept intact in temperature circulation. The rare earth elements yttrium oxide and cerium oxide enhance the oxidation resistance and hydrogen embrittlement resistance. And the dispersing agent and the cross-linking agent further improve the uniformity, compactness and adhesion of the coating, so that the coating is suitable for industrial parts in high-pressure and high-stress environments.

The invention discloses a whitening and antibacterial knitted fabric and a preparation method thereof, and belongs to the technical field of functional clothing, Zn (NO3) 2.6 H2O and 1, 4-phthalic acid (H2BDC) are fully dissolved and dispersed through N, N-dimethylformamide (DMF) and dried to prepare Zn-BDC MOF powder, then nicotinamide and chitosan with whitening, spot fading and antibacterial functions pass through N, N-dimethylformamide (DMF) through interaction of subjects and guests, and the functional clothing is obtained. And dissolving N, N-dimethylformamide, and embedding into MOF pores to obtain the whitening skin-care antibacterial functional MOF material. And finally, adding a polyvinyl alcohol solution to obtain a functional finishing agent, and finishing the finishing agent on knitted garments to obtain the knitted fabric with the whitening, skin-care and antibacterial composite functions. The obtained knitted fabric has good whitening, skin care and antibacterial effects and can be applied to sportswear worn in daily life, and knitted garments made of the knitted fabric have the whitening and skin care effects, are good in use comfort and efficiently resist bacteria.

The present invention belongs to the field of cellulose synthesis, and specifically relates to a heterologous expression Escherichia coli biosynthesis system of cellulose synthase subunits PtCesA1 and PtCesA8 and its application, including a heterologous expression vector of cellulose synthase subunit PtCesA1 or a heterologous expression vector of cellulose synthase subunit PtCesA8; and a heterologous cell containing the above vector. PtCesA1 and PtCesA8 are expressed in heterologous cells respectively to form cellulose synthase, which is used to catalyze the synthesis of cellulose microfibrils. The present invention realizes the biosynthesis of cellulose in vivo, and directly synthesizes a cellulose product with high purity similar to plants and free of lignin and hemicellulose from the bacteria by heterologously expressing plant cellulose synthase subunits in Escherichia coli.

The invention belongs to the technical field of cell engineering and biochemical detection, and particularly relates to an erythrocyte membrane with a complete structure and a preparation method and application thereof. The red blood cells are split by limiting the components of the release liquid, the conditions are mild, protein components such as hemoglobin in the red blood cells can be released, the cell attributes are removed, the integrity of the internal skeleton structure and the activity of the membrane surface antigen are reserved, the complete structure of the red cell membrane is kept, meanwhile, the key blood group antigen on the surface is reserved, and the effect is good. The problem of antigenicity reduction caused by erythrocyte membrane fragmentation is avoided. After the erythrocytes are lysed, the nanoparticles are coupled to the surface of the erythrocyte membrane, so that the agglutination reaction of the erythrocyte membrane under the induction of the antibody can be visualized. The engineering red blood cell biological membrane is preserved by adopting a fixed program, so that the damage of ice crystals to the engineering red blood cell biological membrane can be effectively avoided, the antigenicity of the membrane is not influenced, the membrane can be preserved for a long time at normal temperature, and the shelf life can be prolonged to two years or more.

The invention discloses a three-dimensional grid model obtaining method and device and electronic equipment, and relates to the field of three-dimensional reconstruction, modeling is carried out on an acquired image of a to-be-modeled object through a Gaussian splashing algorithm, after an initial Gaussian point cloud model is obtained, requirements are formed on the basis of initial attribute characteristics of each initial Gaussian ellipsoid and a three-dimensional grid model, and a three-dimensional grid model is obtained. And performing point cloud processing on the initial Gaussian point cloud model to obtain a to-be-determined point cloud model with a three-dimensional gridding characteristic, then performing reconstruction through a Gaussian splash algorithm on the basis to obtain a target Gaussian point cloud model meeting a transparency constraint condition, and rapidly and accurately extracting a three-dimensional mesh patch from the target Gaussian point cloud model. Therefore, the three-dimensional grid model which is complete in structure and accurate in surface feature is formed, further manual modification by technicians is not needed, the obtaining efficiency and quality of the three-dimensional grid model are improved, and the requirement of downstream application for a high-quality three-dimensional model is reliably met.

The invention relates to a lightweight gauze for toughening a fiber composite material and a preparation method thereof, belongs to the technical field of toughened gauzes, and solves at least one of the problems that in the prior art, the gauze is easy to dissolve in a resin filling process, the liquid forming effect is poor, the toughening effect is not obvious and the like. The light gauze comprises a low-melting-point component and a high-melting-point component; the melting point range of the low-melting-point component is 100-160 DEG C, and the low-melting-point component and the epoxy resin are insoluble; the melting point range of the high-melting-point component is 300 DEG C or above, and the high-melting-point component is dissolved in the epoxy resin. The light gauze is not easy to dissolve in the resin filling process, so that the manufacturability of automatic laying and liquid forming in the fiber composite material preparation process is improved; the brittleness of the dry fiber composite material is improved, and the mechanical property of the dry fiber composite material is remarkably improved.

The invention discloses a monocrystalline silicon alkali polishing additive with an inverted pyramid structure tower footing and application of the monocrystalline silicon alkali polishing additive. The monocrystalline silicon alkali polishing additive comprises, by mass, 1-2 parts of glue, 0.5-2 parts of sodium lignin sulfonate, 1-3 parts of quaternary ammonium salt, 0.1-0.3 part of sodium benzoate, 2-3 parts of DL-proline, 2-5 parts of other auxiliaries and the balance deionized water. By adding the additive disclosed by the invention into a polishing solution for alkali polishing of monocrystalline silicon, the reaction rate of a [111] / [100] surface can be changed, the reaction rate of a [110] surface can be increased, an inverted pyramid structure which is uniformly distributed and complete in structure can be formed on the back surface of the monocrystalline silicon, the roughness of the back surface of the monocrystalline silicon can be increased, on one hand, back slurry contact and slurry tension improvement are facilitated, and FF can be improved; and on the other hand, the double-sided rate of the photovoltaic module is improved, thereby improving the electrical performance of the battery piece.

The invention discloses an all-solid-state battery and a preparation method thereof, and belongs to the technical field of solid-state batteries. Comprising electrolyte crushing, mixing and coating processes, an acoustic resonance method is used in each process, a final solid electrolyte is obtained, the electrode material is prepared through the acoustic resonance method based on the prepared solid electrolyte, the specific capacity of the electrode material prepared through the acoustic resonance method is improved, and compared with an existing mainstream ball milling process, the specific capacity of the electrode material is greatly improved. And the process time is reduced from several hours to minute level, so that the efficiency of each flow is greatly improved, and the preparation efficiency of the whole all-solid-state battery is further improved.