48results about How to "Broad application space" patented technology

The invention relates to the technical field of ceramics, and discloses a ceramic tile with a golden velvet texture and a recarved raw stone effect and a preparation method of the ceramic tile. The ceramic tile comprises a green body layer, a cover glaze layer, a pattern texture layer, a digital deep ink layer and a dry granular glaze layer which are sequentially arranged from bottom to top, the digital deep ink layer is composed of digital matte deep ink; the dry granular glaze layer is composed of dry granular glaze; a surface tension difference is formed between the digital matte deep ink and the dry granular glaze. By improving the digital matte deep ink, the digital matte deep ink can be combined with the dry granular glaze, and a matte three-dimensional non-collapse effect is formed on the glaze surface; the dry granular glaze is improved, so that the dry granular glaze has better physical properties; through the improvement of the suspending agent, the suspending agent can generate relatively strong combining capacity with dry particles, so that the dry particle glaze has relatively strong polarity, and can form enough repulsive force when being combined with digital matte deep ink with strong hydrophobicity, so as to form a finer and three-dimensional concave-convex fluctuating effect.

The utility model discloses a saddle ram structure of a numerical control machine tool, and relates to the field of numerical control machine tools. The sliding saddle is of a hollow structure, the ram is arranged in a hollow inner cavity of the sliding saddle in a sliding mode and is of a square structure, a guide rail is installed at the position, close to the corner, of each side face of the ram, and a plurality of sliding blocks with the same number are arranged on each guide rail; the ram is fixedly connected with the sliding blocks, and one side of each sliding block is provided with an oil injection structure used for supplying lubricating oil. The form that eight guide rails are arranged at four corners of the ram is adopted, and meanwhile, the saddle with a hollow inner cavity structure closed on the periphery is adopted, so that the rigidity of the mechanism is improved, and the rigidity can reach the rigidity of plastic-coated guide rails in comparison with the rigidity. Due to the characteristics of the linear guide rail, the sliding saddle ram structure has high-speed and high-precision operation capacity, the sliding saddle ram structure has high speed, high precision and high rigidity and has excellent comprehensive performance, and a machine tool adopting the sliding saddle ram structure has wider application space and capacity.

The present disclosure proposes a network representation learning method across medical data sources, including: S1, generating medical network data including a source network and a target network; S2, randomly sampling a set number of nodes from the source network and the target network; S3, obtaining an L-layer neural network, and calculating the structural features and expression features of the source network and the target network for each layer, and calculating the distance loss between the network features of the source network and the target network; S4, obtaining the output of the source network in the L-layer neural network, and calculating the loss value according to the classification loss and the distance loss, and updating the parameters of the algorithm according to the back propagation algorithm; S5, repeating steps S2-S4 until the entire algorithm converges, so that the accuracy of the algorithm for disease classification does not increase within multiple iterations. The present disclosure takes into account the problem of inconsistent data distribution between different hospital data sources, and has a broad application space by extracting the structural information of the network and the node attribute information, and minimizing the feature distance to compensate for the information loss.

The present invention discloses a composite desiccant and a preparation method thereof, and belongs to the field of desiccant preparation. The composite desiccant comprises modified silica gel and activated carbon in a mass ratio of (7 to 15): (1 to 5). The present application not only has an excellent moisture absorption rate, but also can absorb odors, and is easy to shape so as to have a wider application space by compounding the modified silica gel and activated carbon. Specifically, the modified silica gel prepared by the present application has an excellent microporous structure. After being treated with an organic acid solution, it can play a certain role in cleaning and expanding the micropores, thereby making it have a high specific surface area, and can load more activated carbon, synergistically, and achieve a better adsorption effect; in addition, the modified silica gel of the present application has a larger number of hydroxyl groups and a high internal structure stability, which can not only significantly improve its adsorption performance, but also is not easy to deform, deteriorate or penetrate out of the packaging bag after absorbing water to affect the product, and the recycling and reuse process is simple.

The invention discloses a calcium carbonate scale inhibitor for oil and gas field injection and production and a preparation method thereof, and belongs to the technical field of scale inhibitors. The raw materials adopted by the invention comprise maleic anhydride, sodium hypophosphite, 2-acrylamide-2-methylpropanesulfonic acid and methacryloylethyl sulfobetaine, wherein the molar ratio of the maleic anhydride to the sodium hypophosphite to the 2-acrylamide-2-methylpropanesulfonic acid to the methacryloylethyl sulfobetaine is (100-300): (100-300): (5-15): (50-150). The scale inhibitor provided by the invention is used in the injection-production process of oil and gas fields, a sulfo betaine monomer is introduced into the scale inhibitor, the monomer has positive ions and negative ions, the positive ions and the negative ions have the same isoelectric point and do not influence the whole charge performance, and meanwhile, a sulfonic acid strong polar group is introduced into the negative ions, so that the temperature resistance and salt resistance of the scale inhibitor are improved; the cationic charges can improve the dispersing capacity of the scale inhibitor, so that the scale inhibition effect of the scale inhibitor is improved, the scale inhibitor provided by the invention has a relatively good scale inhibition effect on CaCO3, and the scale inhibition rate can reach 90% or above.

The invention provides a Mn-based metal organic framework derived Mn2O3 / Mn3O4 heterojunction material as well as a preparation method and application thereof, and belongs to the field of nano material preparation methods and electro-catalysis cross application. The preparation method comprises the following steps: S10, reacting manganese salt, a surfactant and a benzoic acid compound in a solvent to obtain a Mn-based metal organic framework material; s20, calcining the Mn-based metal organic framework material in an inert atmosphere to obtain a carbonized product; and S30, flattening the carbonized product, and calcining the flattened carbonized product in an air atmosphere to obtain the Mn-based metal organic framework derived Mn2O3 / Mn3O4 heterojunction material. The method can be applied to renewable energy sources, is simple in process, universal in preparation condition, high in yield, green and environment-friendly, stable in product morphology and excellent in catalytic activity, shows excellent activity and electrochemical performance in catalysis of lithium polysulfide conversion of a cathode of a lithium-sulfur battery, and is also suitable for medium-scale industrial production.

The invention discloses a novel phonon transistor pile, which belongs to the technical field of soil vibration reduction and comprises a pile tip, a pile body and a plurality of ABH-L.R. Combined vibration reduction units. The pile tip is located at the bottom end of the pile body. The ABH-L.R. Combined vibration reduction units are periodically distributed in the pile body from bottom to top along the height of the pile body and connected with the pile body through elastic materials. The ABH-L.R. Combined vibration reduction units are periodically arranged in the pile body, vibration is gathered in the center of the structure through the two-dimensional acoustic black hole plate, energy is dissipated through the energy dissipation characteristic of the constraint damping layer arranged in the center of the two-dimensional acoustic black hole plate and the local resonance effect generated by the L.R. Phononic crystal unit cells, the tubular pile can have the elastic wave band gap characteristic, and the elastic wave band gap vibration reduction effect is achieved. Low-frequency vertical vibration can be effectively filtered, and the influence of the vertical vibration on a building is restrained.

The invention discloses low-viscosity modified rubber asphalt. The low-viscosity modified rubber asphalt is prepared from the following raw materials in parts by weight: 78 to 85 parts of modified asphalt, 10 to 17 parts of activated rubber powder, 12 to 15 parts of styrene-butadiene-styrene block copolymer and 12 to 15 parts of softening oil. Hydrogen peroxide, ferrous sulfate, polyvinylpyrrolidone and microwave radiation are combined to activate waste tire rubber powder, so that vulcanized rubber on the surface of the rubber powder is depolymerized, the adhesion and compatibility of the rubber powder and a matrix are improved, and the rubber powder can be uniformly dispersed in asphalt molecules, adsorb light components in the asphalt molecules and swell to form a bonding structure; the matrix asphalt is modified by expanded graphite, tetrabutyl titanate, glacial acetic acid and silicone oil, so that the thermal stability of the asphalt can be improved, and the smoke release can be reduced. After the modification reaction, the finally prepared modified rubber asphalt has the characteristics of low viscosity, low odor and high thermal stability.

The invention relates to the technical field of aero-engine titanium alloy rotor blade repair, in particular to a stress regulation and control method for improving fatigue strength of a titanium alloy rotor blade after welding repair, which comprises the following steps: vacuum heat treatment, self-adaptive machining, first vibration finishing, laser shock peening, shot peening and second vibration finishing. Performing vacuum heat treatment on the blade subjected to electron beam welding repair; a machining program is compiled, machining is conducted on the patch repairing area, and the blade with the profile size meeting the use requirement is obtained; and after the first time of vibration finishing, laser strengthening equipment is used for carrying out laser strengthening on the blade area needing to be strengthened, shot blasting is carried out, then second time of vibration finishing is carried out, and the stress regulation and control method is completed. The vibration fatigue strength of the repaired blade is improved by 30% compared with that of a welding heating treatment process, the service life of the blade is effectively prolonged, the use performance requirement of parts is met, the maintenance and part replacement cost of an aero-engine is reduced, and the method has large economic benefits.

The invention relates to a preparation method of a high-performance soybean protein emulsion film, which comprises the step of carrying out fibrosis denaturation on soybean protein by adopting an acetic acid-water binary solution, so that the hydrophobic property, the film-forming ability and the environmental interference resistance of the soybean protein can be remarkably improved. And further starting from a protein self-assembly fibrosis principle and a protein film forming theory, a soybean protein-based biological membrane with certain mechanical strength and flexibility is constructed through self-assembly fibrosis denaturation of protein molecules in an aqueous solution, so that the problems of poor mechanical property and high solubility of the existing protein-based biological membrane are effectively solved.

The invention belongs to the technical field of fluorescence imaging, and particularly relates to a compound with a lysosome and mitochondria double-color imaging function and a preparation method and application thereof. The compound provided by the invention has different excitation wavelengths and fluorescence with different colors in different acid-base environments, and can be used for preparing fluorescent probes for simultaneous imaging of different organelles. The fluorescent probe provided by the invention can realize double-color imaging of living cells or lysosome and mitochondria in vivo at the same time, green fluorescence is displayed in the lysosome, red fluorescence is displayed in the mitochondria, and the lysosome and the mitochondria can be monitored in real time in a living biological sample. Meanwhile, the fluorescent probe can avoid the problems of mutual interference, staining condition exploration and the like when a commercial probe is used for researching lysosome and mitochondria. In addition, the fluorescent probe is simple in preparation process, low in cost, stable in structure and convenient to store, and has wide application space in biological function research of lysosome and mitochondria.

The invention relates to the technical field of degradable plastics, and particularly discloses a starch-based biodegradable plastic and a preparation method thereof.The preparation method includes the steps that high-amylose starch (such as corn, potatoes and cassava) is selected as a raw material and cleaned, dried and ground to obtain starch powder, a natural plasticizer (such as glycerin) is added to improve the flexibility, and the starch-based biodegradable plastic is obtained; a chemical cross-linking agent (such as glutaraldehyde) is used for enhancing the strength and the heat stability, an antioxidant (such as vitamin E) and an antibacterial agent (such as tea polyphenol) are used as additives, and the mass ratio of the antioxidant to the antibacterial agent is (0.6-0.85): (0.05-0.2): (0.005-0.03): (0.001-0.01): (0.001-0.005). The starch-based bioplastic prepared by the invention has good degradation performance and adjustability, is particularly suitable for the fields of disposable packaging, agricultural films, medical materials and the like, has a natural antibacterial function and ultraviolet protection capability, has huge application potential in the fields of medical treatment, food packaging and environmental protection, and has wide application prospects. The advantages of the starch-based plastic in agricultural application are also realized.

The application discloses a prediction method for the relationship between welding repair defects and fatigue life of TC17 titanium alloy blades, and comprises the following steps: step one, establishing a fatigue life prediction model related to repair defects; step two, preparing a rotary bending fatigue sample; step three, heat treating a surfacing sample; step four, processing the rotary bending fatigue sample; step five, testing the rotary bending fatigue; step six, analyzing a fracture and counting defects; and step seven, establishing a rotary bending fatigue life prediction model. The application selects an electric arc welding wire repair test block, tests the rotary bending fatigue performance of the test block, observes and counts the defect morphology, size and position of the fracture, analyzes the corresponding relationship between the defects and the fatigue life, establishes a fatigue life prediction model related to the repair defects, and determines the influence of the pore defects on the fatigue life of the repaired blade through the model.

The present invention belongs to the field of fluorescence imaging technology, and specifically relates to a compound with lysosome and mitochondria dual-color imaging function, and a preparation method and application thereof. The compound provided by the present invention has different excitation wavelengths under different acid-base environments, has fluorescence of different colors, and can be used to prepare fluorescent probes for simultaneous imaging of different organelles. The fluorescent probe provided by the present invention can simultaneously dual-color image lysosomes and mitochondria in living cells or in vivo, showing green fluorescence in lysosomes and red fluorescence in mitochondria, and can monitor lysosomes and mitochondria in real time in living biological samples. At the same time, the fluorescent probe can avoid the problems of mutual interference, groping for staining conditions, etc. when using commercial probes to study lysosomes and mitochondria. In addition, the preparation process of the fluorescent probe is simple, the cost is low, and the structure is stable and easy to store, and it has a broad application space in the study of lysosome and mitochondrial biological functions.

The present application relates to the technical field of molecular sieve, in particular to a kind of self-supporting MFI nanosheet molecular sieve and its preparation method and purposes, the preparation method of the self-supporting MFI nanosheet molecular sieve includes the following steps: 1) after mixing silicon source, aluminium source, alkali source, template agent and water, obtain gel mixture;2) the gel mixture obtained in step 1) is crystallized, i.e. the self-supporting MFI nanosheet molecular sieve is obtained;Wherein, the template agent is imidazolyl quaternary ammonium salt compound.The self-supporting MFI nanosheet molecular sieve prepared in the present application does not need expensive surfactant, no phosphorus species is left in channel after calcination, the range of silicon-aluminum ratio is wide, and it is simple and easy to repeat.

The invention discloses a mold locking force setting method for pull rod stress balance of a plastic injection molding machine, which is used for solving the problem that the set mold locking force is not uniformly distributed on four pull rods or the set value exceeds the actually required mold locking force due to the fact that the geometric center of a mold cavity does not coincide with the mold locking center of a machine. The mold clamping force setting method comprises the following steps: (1) reading the projection area of a mold cavity including a runner system on a parting surface; and (2) calculating the mold expanding force of the melt on the mold cavity. And (3) calculating the calculated mold clamping force when mold expansion does not occur and a qualified product is formed. And (4) judging whether the projection pattern of the mold cavity on the parting surface is centrosymmetric about the center of the main runner of the gating system or not. And (5) calculating the set clamping force when the central positions coincide. And (6) calculating the set clamping force when the central positions are not overlapped. According to the invention, two conditions that the center of the clamping force coincides with or does not coincide with the centers of the four pull rods are considered, and the clamping force can be set as required, so that the four pull rods are uniformly stressed, the service lives of equipment and a mold are prolonged, and particularly, the stable operation of the main force-bearing component pull rods for the clamping force of the injection molding machine is protected; and the stability of the production process and the product quality are ensured, so that the method has wide application space.

The utility model discloses a lathe positioning tool, which belongs to the field of lathe tools and is characterized in that a ball screw component is mounted at the edge of the lower end of a partition plate, a connecting rod is mounted on a moving table of the ball screw component, the connecting rod penetrates through a kidney-shaped hole formed in the partition plate to be connected with a connecting strip, and the connecting strip is fixed with two mounting seats; a rotating handle is arranged at the outer end of the ball screw assembly, a moving table on the ball screw assembly is adjusted by rotating the rotating handle, then the position of a pulley on the sliding rail is adjusted, and therefore the relative position of the positioning chuck and the connecting base is finely adjusted. And the positioning flexibility is also greatly enhanced by introducing a fine adjustment structure. Due to the fact that each positioning clamping block can be independently adjusted, and the design of the sliding rail and the ball screw assembly allows the positioning chucks to freely move in multiple directions, the tool can easily cope with workpieces of different shapes and sizes, and diversified positioning requirements are met. The flexibility endows the tool with a wider application space, so that the tool can adapt to challenges of various machining tasks.

The invention discloses a low-viscosity modified rubber asphalt and a preparation method thereof. The low-viscosity modified rubber asphalt comprises the following raw materials, which are measured by weight: 78 to 85 parts of modified asphalt, 10 to 17 parts of activated rubber powder, 12 to 15 parts of styrene-butadiene-styrene block copolymer, and 12 to 15 parts of softening oil. Hydrogen peroxide, ferrous sulfate, polyvinyl pyrrolidone and microwave radiation are combined to activate the rubber powder of waste tires, so that the vulcanized rubber on the surface of the rubber powder is depolymerized, the adhesion and compatibility of the rubber powder with the matrix are improved, and the rubber powder can be evenly dispersed in the asphalt molecules, adsorbing the light components in the asphalt molecules, and swelling to form a bonding structure; the matrix asphalt is modified by expanded graphite, tetrabutyl titanate, glacial acetic acid, and silicone oil, which can improve the thermal stability of the asphalt and reduce the release of smoke. After the above modification reaction, the modified rubber asphalt finally obtained has the characteristics of low viscosity, low odor, and high thermal stability.

The invention discloses a hyperbranched organic silicon modified high-strength polyether type ablation-resistant elastomer and a preparation method thereof. The elastomer comprises a component A and a component B, wherein the mass percentage ratio of the component A to the component B is (10-90%): (90-10%); the component A mainly comprises the following raw materials: hyperbranched organic silicon resin and a catalyst; the raw material of the component B mainly comprises silane-terminated polyether; and the component A and the component B can also comprise a filler. The organosilicone elastomer can be obtained by mixing, stirring and curing the silane-terminated polyether and the hyperbranched organosilicone resin in proportion. According to the elastomer disclosed by the invention, the hyperbranched organic silicon resin is used as a hard segment, and the silane-terminated polyether is used as a soft segment, so that the elastomer shows excellent high-temperature resistance, ablation resistance, strong adhesive force, excellent tear strength, excellent tensile strength and good elongation at break; the preparation method is simple, low in cost and suitable for large-scale application.

The invention relates to the technical field of power transmission line ice melting, and provides a method for simultaneously melting ice on multiple power transmission lines in an alternating-current power-off-free mode, and the method comprises the steps: adding ice melting components at the tail ends of multiple lines in an ice melting section under the condition that the load is not changed, increasing the current of the lines in the ice melting section, and improving the ice melting efficiency of the lines in the ice melting section; the ice on the wire is removed in a self-heating mode when the wire runs in a heavy load or full load state. According to the invention, a conventional single power transmission line AC / DC power failure ice melting mode is changed, and simultaneous non-power-failure AC ice melting is carried out on a plurality of power transmission lines; according to the invention, ice melting of a plurality of lines can be rapidly, conveniently and automatically controlled at the same time, the workload of ice melting is reduced, normal operation of the lines is ensured, and the reliability of line power transmission is improved; inductive current increased by each line capable of simultaneously melting ice is compensated, and the voltage quality of each line subjected to ice melting is stabilized.

The present invention relates to the field of preparation of natural polymer / inorganic nanosheet composite materials, and in particular to a high-strength polysaccharide-MXene composite microsphere and a preparation method thereof. The surface of MXene is rich in hydroxyl groups, and hydrogen bonds can be formed with the ‑OH / ‑O‑ and ‑O‑ / ‑OH on the polysaccharide molecular chain to play the role of additional physical crosslinking points, and then assisted by subsequent chemical crosslinking, high-strength polysaccharide-MXene composite microspheres are prepared. Protein adsorption and pressure flow rate curve experiments show that the composite microsphere has good biocompatibility, and the operating flow rate is greatly improved than that of simple polysaccharide microspheres. The composite microsphere has great application potential in the fields of biocatalysis and fast flow rate protein chromatography separation.

The invention relates to the field of carbon dioxide capture, and discloses a process for curing CO2 by using desulfurization slag, which comprises the following steps: (1) drying and grinding SDS desulfurization slag, then contacting with coke oven gas for reaction to obtain a solid product, and mixing the obtained solid product with water to obtain a mixed solution; (2) the mixed solution obtained in the step (1) is in contact with metallurgical furnace flue gas for a first reaction, a reacted solution is obtained, the reacted solution is in contact with the metallurgical furnace flue gas for a second reaction, and a reacted material is obtained; and (3) carrying out reduced pressure evaporation and solid-liquid separation on the reacted material obtained in the step (2), and drying the solid-phase material obtained after solid-liquid separation to obtain sodium bicarbonate. According to the process, by reconstructing a desulfurization carbon sequestration synergistic harmless treatment process, synergistic treatment of metallurgical solid waste and CO2 is achieved, and Na2SO4 and Na2CO3 of desulfurization residues are converted into recycling products NaHCO3.

The invention discloses a rice remote sensing mapping method based on unique spectral characteristics in a rice transplanting period, and relates to a rice remote sensing identification method. The method aims at solving the problems that an existing rice drawing method is poor in mobility, a large number of parameters or threshold values need to be set, and long-time-sequence or year-round remote sensing data are relied on. The method comprises the following steps: 1, determining a wave band combination reflecting a unique color in a rice transplanting period; 2, mapping a spectral band to a CIE color space; and 3, constructing a rice identification method in a CIE color space. The method is clear in principle, simple, rapid, high in automation degree and particularly suitable for large-scale (national / intercontinental / global) rice drawing, and has huge application potential and wide application space. The invention belongs to the field of remote sensing mapping.

The invention provides low-temperature-resistant self-powered sensing ionic hydrogel as well as a preparation method and application thereof, and belongs to the technical field of ionic hydrogel. The method comprises the following steps: dissolving one or two polymeric monomers in deionized water to obtain a solution 1; the polymeric monomer contains double bonds and simultaneously has one ligand group of carboxyl, sulfonic acid group, hydrazide group or amide group; adding a hydrophobic cross-linking agent and a photoinitiator into the solution 1, and uniformly stirring and mixing to obtain a solution 2; adding a central metal ion salt into the solution 2, and uniformly mixing and stirring to obtain a precursor solution; and adding the obtained precursor solution into a polytetrafluoroethylene mold, and carrying out free radical polymerization reaction under an ultraviolet lamp to obtain the low-temperature-resistant self-powered sensing ionic hydrogel. The ionic hydrogel disclosed by the invention has excellent conductivity and relatively high mechanical property at low temperature.

The application discloses a composite system for enhancing corrosion resistance of high-entropy alloy and a use method thereof, and relates to the technical field of high-entropy alloy processing. The heat treatment device, the oxidation treatment device and the laser cleaning treatment device are connected with the control panel respectively, so that the temperature, oxidation and laser action of the high-entropy alloy in the processing process can be effectively controlled; the heat field action can accelerate the diffusion of high-entropy alloy elements to obtain more uniform component distribution; the oxidation can quickly generate an oxide protective film on the surface of the high-entropy alloy to isolate corrosion; and the laser cleaning can adjust the surface and interface structure of the high-entropy alloy and help to eliminate surface and internal defects. Through the heat field action, the oxidation and the laser action, the synergistic effect among processes, the corrosion resistance of the high-entropy alloy can be significantly improved, the three-dimensional and comprehensive improvement of the corrosion resistance is realized, and the high-entropy alloy has a wider application space and application value.

The utility model provides a rotary stirring superfine mill which is composed of a rotary cylinder assembly and a stirring shaft assembly, and the stirring shaft assembly is arranged in the rotary cylinder assembly. The rotary cylinder assembly comprises a rotary cylinder, a feeder and a feeding screw; wherein the stirring shaft assembly is located in the rotary cylinder body, a plurality of discharging holes are formed in the tail end of the rotary cylinder body, the feeder, the feeding screw and the material guiding cone are sequentially installed at the front end of the rotary cylinder body, materials enter the feeding screw cylinder through a discharging pipe on the feeder and enter the rotary cylinder body through the material guiding cone, and the stirring shaft assembly is located in the rotary cylinder body. At the tail part of the rotary cylinder body, the materials fall into a discharging ventilation lower shell through a discharging hole and are discharged; the stirring shaft coupler is connected with the output end of the permanent magnetic direct-drive motor. According to the utility model, materials which need to be subjected to superfine grinding in the rotary cylinder are subjected to grinding, rubbing, shearing and extruding, so that the materials are subjected to superfine grinding; the superfine grinding effect is guaranteed, and the problem of material flowing is solved.

This invention relates to a water circuit switching structure and a toilet, characterized by comprising a water tank, a float, and a limiting block. The water tank has an inlet, a first outlet, and a second outlet. The float is movably positioned between the inlet, the first outlet, and the second outlet. The limiting block is located inside the water tank. When water enters through the inlet, the limiting block restricts the float to a first position, connecting the inlet to the first outlet. When water stops flowing through the inlet, the limiting block releases the float, and the float moves to a second position under buoyancy, resuming water supply to the inlet and maintaining the float in the second position, connecting the inlet to the second outlet. This invention has the following advantages: 1. It reduces reliance on a motor, reducing the occurrence of malfunctions. 2. The switching structure is simple, stable, and reliable, offering significant cost advantages. 3. It has a wide range of applications.

This invention proposes a design method for impedance-gradient metamaterials, which includes: calculating the impedance-gradient metamaterial set X = {x 1 ,…,x k The corresponding evaluation function result set Y(X) = {y} 1 ,…,y k The process involves calculating the mean and variance of the evaluation function result set Y(X), and then calculating the prior distribution function based on the mean, variance, and evaluation function result set Y(X). A data acquisition function is then calculated based on the minimum value in the evaluation function result set Y(X), the prior distribution function, and the variance. An iterative operation is performed to obtain the optimal impedance-gradient metamaterial corresponding to the maximum value in the data acquisition function. At the end of the iterative operation, the thickness and / or impedance of each metamaterial layer in the multiple metamaterial layers characterized by the optimal impedance-gradient metamaterial, as well as the arrangement of the multiple metamaterial layers, are output. This effectively shortens the design time of the impedance-gradient metamaterial and improves the design effect.

The invention discloses a micro-fluidic chip with an adjustable inlet structure for sorting submicron-scale cells. The micro-fluidic chip is synthesized by bonding an upper cover plate, a cell sorting micro-channel and a lower bottom plate layer by layer. The upper cover plate is provided with an outer side inlet, an inner side inlet, an outer side outlet and an inner side outlet. The cell sorting microchannel is composed of an inlet structure adjusting area, a spiral channel area and an outlet area. The lower bottom plate is provided with a wedge-shaped structure protruding upwards, and three inlet structures which are narrow outside and wide inside, equal outside and inside and wide outside and narrow inside can be manufactured by adjusting the position of the wedge-shaped structure. And the submicron-scale cells are sorted by matching the cell sorting microchannels with the wedge-shaped structures. The spiral micro-channel is introduced, the purpose of controlling the transverse migration starting point of the cells is achieved by adjusting the inlet structure of the spiral channel to be matched with a proper flowing working condition, and finally high-precision sorting of the submicron-scale cells is completed. And flexible adjustment can be performed according to specific sorting requirements, so that the diversity and adaptability of cell sorting are improved.

This invention designs a method for strength analysis of longitudinal connection structures in aircraft skin, belonging to the field of airframe structural strength design. Through finite element modeling and experimental analysis, it determines the load-sharing factor of fasteners and the influence of secondary bending on the load-bearing capacity of the connection area. This invention significantly improves the accuracy of strength calculations for longitudinal connection structures in aircraft skin, providing support for strength analysis of aircraft products. This invention has wide applications in structural design in aviation, aerospace, and automotive industries; it can improve structural utilization efficiency, designing optimal structural dimensions while meeting structural strength requirements; it helps reduce unnecessary conservative designs, greatly shortening development time and reducing development costs.