283results about How to "Improve repair ability" patented technology

The invention relates to a growth factor slow-release type double-layered artificial skin which is used for repairing injured skin with related growth factor slow-release functions and a preparation method thereof. The artificial skin is divided into two layers of an epidermal layer and an enderonic layer, wherein the epidermal layer is constituted by a micropore double-layered thin film with the functions of water proofing, ventilation and enderonic protection; the materials of the upper layer which contacts with air is polyurethane, or silicon rubber, or polyethylene glycol, or ethylene terephthalate and other medical materials; the lower layer which contacts with the dermis is a natural biological macromolecule thin film which is constructed by silk fibroin and chitosan; the enderonic layer of the artificial skin is constituted by collagen, polysaccharide and microspheres carrying growth factors related to skin regeneration and repairing; the microspheres have good slow-release function, and the slow-release period is equal to or slightly longer than the degradation period of the collagen and polysaccharide and can be matched with the skin regeneration and repairing period; and the thickness of the artificial skin is in a range of 0.5-1.5mm and can be regulated according to requirements.

The invention relates to artificial skin prepared from purely natural materials and having gradient hole structure and property and a preparation method thereof. The artificial skin comprises an epidermal layer and an enderonic layer, wherein the epidermal layer and the enderonic layer both have the gradient in the structure and the property simultaneously and the thicknesses of the epidermal layer and the enderonic layer are between 0.5 millimeters and 1.5 millimeters and can be regulated as required; the epidermal layer is a thin film which has the functions of water prevention, air permeation and enderon protection and has compacter structure, and the dimensions of holes are smaller than 5 micrometers; the epidermal layer has degradability, degrading period between four months and six months and good elasticity and ductility; the enderonic layer of the artificial skin is prepared from collagen and polysaccharide in a simulating way, in a sponge shape, porous and mutually communicated, the dimensions and the distribution of the holes are in gradient distribution from top to bottom, and apertures are increased from 20 micrometers to 300 micrometers; the enderonic layer has different degrading periods from top to bottom and is also in the gradient distribution, degrading speed is increased from top to bottom, and the degrading periods are accelerated from four months to two weeks; and the dimensions and the distribution of the holes and the gradient of degradation are controlled by the component transformation and a multi-layer overlying processing technology.

The invention relates to a whitening and speckle removal skin care product, which belongs to the field of commodity chemicals and consists of the following ingredients in percentage by weight: 10 to 20 percent of ethanol extract concentration liquid of raw material medicine of radix angelicae, pseudo-ginseng, erigeron breviscapus and Indian buead, 5 to 10 percent of white fungus broth, 2to 4 percent of seabuckthorn oil, 1 to 3 percent of tartaric acid, 4 to 8 percent of emulsifying agents, 18 to 22 percent of emollient, 15 to 20 percent of humectant, 0 to 5 percent of whitening agents, 0 to 0.25 percent of thickening agents, 0 to 0.5 percent of antiseptic agents, 0 to 0.15 percent of antiinflammatory agents and the balance rose water. The pH is 6.5 to 7. A layer of natural shield can be provided for the skin, simultaneously, the product can penetrate the bottom layer of the surface layer skin to provide nutrients for the dermis, the generation of wrinkles is delayed, the generation of basical layer skin pigment is inhabited, and the skin metabolism is promoted, so the slow skin metabolism period recovers the normal state, and the roughness and the dark yellow color are eliminated.

The invention provides a sea cucumber bottom-sowing culture facility suitable for a soft seabed. The facility comprises frameworks, built-in separation nets, built-in dense nets, cuffs, a traction rope, an anchoring object and a marking floater. The frameworks are arranged in parallel and are covered with outer-wrapping netlike clothing, the frameworks are mutually connected to be of a telescopic mesh cage shape, the built-in separation nets for separating each framework into a plurality of culture units are arranged on each framework, the built-in dense net for catching and gathering sea cucumber baits is arranged in each culture unit, cuffs for taking and placing a sea cucumber is arranged on the outer-wrapping netlike clothing of each culture unit, the frameworks on two ends are respectively and sequentially connected with the traction rope and the anchoring object to be fixedly arranged in a seabed, and the marking floater is connected onto one end of the culture facility. Compared with the traditional culture facility, the culture facility provided by the invention is light and convenient, can be compressed, and is convenient for transportation, throwing and management, and the affect from a natural disaster of typhoon and the like is avoided; and by the adoption of the culture facility, the problems of easiness in entrapping by silt, poor culture effect and the like of the traditional culture facility can be solved, particle-like suspended matters in seabed water can be effectively held back as sea cucumber baits, and the survival ratio and the growth rate of the sea cucumber are improved.

The invention belongs to the technical field of associated contained soil restoration of environment protection and relates to a novel restoration method for organic contaminated soil. The method comprises the following steps of: using an oxidation reaction system consisting of amino carboxylic acid substances (ethylene diamine tetraacetic acid (EDTA), ethylenediaminedisuccinic acid (EDDS), sodium triglycollamate(NTA) and the like), zero-valent iron (ZVI) and air (AIR) to complex dissolved oxygen through a series of reactions between amino carboxylic acid complexing agent and Fe<2+>; and finally, enabling O-O bond to brake and activate for in-situ generating H2O2, reacting the generated H2O2 with Fenton formed by Fe<2+> to quickly degrade organic pollutant in the soil, and simultaneously degrading the amino carboxylic acid complexing agent. Compared with the traditional Fenton and ZVI / H2O2 type Fenton, the novel oxidation system also can react under neutral and alkaline conditions without additionally adding acid to adjust the acidity; the H2O2 can be generated in situ without being additionally added. The restoration method has the advantages of high degradation rate, environmental friendliness, simplicity in operation and low cost, and is an effective method for quickly and effectively restoring high-concentration organic contaminated site soil.

The invention discloses a method and a device for restoring disk arrays based on stripping. The method comprises the steps of dividing RAID (Redundant Arrays of Independent Disks) into a plurality of particle storage units in equal sizes, and managing each particle storage unit by an internal IO (Input / Output) acceleration engine after carrying out unique identification on each particle storage unit; dividing a reserved area in each particle storage unit; copying and restoring data in a strip to the reserved area in the particle storage unit where the strip is located when IO error is caused, and recording a transfer path to a mapping table; carrying out data operation on the reserved area which is redirected by a logical block address when the RAID are accessed by a system again. The method and the device disclosed by the invention have the advantages that the disk array has the capacity of restoring quickly, the strip is used as a basic unit for restoring, and a demoted strip can be quickly restored by minimum space cost; a new magnetic disk is not needed to be inserted during a restoring process, and data can be automatically restored to the internal reserved area; the restoring time occupies 1% of traditional reestablishing time; local error of the magnetic disk can be isolated, and a bad block of the magnetic disk can be prevented from diffusing.

The invention discloses a submarine cable underwater synchronous paying-off underwater vehicle which is characterized by comprising a shipborne mechanical system, a synchronous pushing system, a pneumatic launching system, a calculation center control system and a dragging and underwater-moving system. The technologies of electric automatization, aerodynamics, mechatronics and single chip microcomputer control and the like are integrated, underwater operation can be achieved, and the underwater vehicle is less affected by stormy waves; automatic detection and real-time paying-off can be achieved, the positioning precision is 0.5-3 m, the course accuracy is 0.01 degree, and a cable line corridor can be accurately controlled; cable laying is high in speed and can be controlled in real time, and the highest cable laying speed can reach 50 KM / h; the automation degree is high, and the number of construction staff is greatly decreased; the integration degree is high, and the whole process can be monitored; construction obstacles for the cable line corridor do not need to be cleared away, so that the environment is protected; all the systems can be recycled, and secondary investment is low; the systems operate synchronously, and the tension force of submarine cable laying is reduced; the line first-aid repair capability is high, and the submarine cable underwater synchronous paying-off underwater vehicle is suitable for line reconstruction work after seaquakes; and the structure is reasonable, and the performance is reliable.

This invention relates to an embedded system fingerprint identifying and matching method belonging to image processing and mode identifying technology realm, comprising the following steps: first, basing on area line character calculating direction graph, then making neighborhood differences statistic to realize fingerprint line enhancement; second, thinning fingerprint by adopting ossification method; third, extracting fingerprint character points by structure character; last, matching the character points. The invention can process image of fingerprint with multiple breakpoints, enhance restoring ability to breakpoint and scar, improve identifying ability to character point with similar structure.

The invention discloses a biological response system for multistage sewage treatment as well as a manufacturing method and a sewage treatment method. The biological response system is formed by connecting a multistage precipitation pretreatment unit, a multistage hydrolysis and acidizing treatment unit, an aeration oxygenation treatment unit and a multistage undercurrent wetland treatment unit through pipelines; the multistage undercurrent wetland treatment unit comprises a water inlet wetland pool, two groups of decomposition and percolation wetland pools and a water outlet wetland pool which are sequentially arrayed; and the multistage precipitation pretreatment unit, the multistage hydrolysis and acidizing treatment unit and the aeration oxygenation treatment unit are sequentially arranged on one side of the multistage undercurrent wetland treatment unit in parallel and are connected with one another through pipelines. The biological response system provided by the invention has the advantages of scientific design, reasonable structure, fewer electromechanical devices due to the adoption of an automatic flow mode, low operation cost, low sewage treatment expense, small floor area, obvious sewage treatment effect, convenience for operation and maintenance management, low cost on project capital construction and operation, and capability of carrying out purification treatment all the year round, ; the treated sewage can be directly discharged into reservoirs, rivers and lakes and is in accordance with discharge standards in China; and a bioecological technology has stronger self-regulation capability and repair capability.

The invention discloses a farmland polluted soil heavy-metal passivating agent as well as preparation and application methods thereof. The farmland polluted soil heavy-metal passivating agent is prepared from the following components: 20 percent to 40 percent of calcium oxide, 3 percent to 10 percent of sulfide, 3 percent to 15 percent of ferrite, 5 percent to 10 percent of plant ash, 5 percent to 10 percent of volcanic rock, 10 percent to 30 percent of natural silicate clay mineral and 15 percent to 30 percent of nano hydroxyapatite. The preparation method comprises the following steps: (1) weighing the natural silicate clay mineral in percentage by mass and crushing; carrying out ball milling and sieving until the fineness is 60 to 100 meshes to obtain powder for later use; (2) mixing nitrate and hydroxy acid according to the ratio of 1 to 1; after reacting, filtering; washing with de-ionized water and precipitating to obtain the nano hydroxyapatite; (3) weighing the calcium oxide, the sulfide and the ferrite in percentage by mass and uniformly mixing the calcium oxide, the sulfide and the ferrite with the natural silicate clay mineral and the nano hydroxyapatite and drying a mixture to obtain the farmland polluted soil heavy-metal passivating agent. The heavy-metal passivating agent disclosed by the invention has the advantages of short treatment time, rapid effect, strong repairing capability and easiness of obtaining the raw materials and is suitable for popularization.

The invention belongs to the field of daily cosmetics and particularly relates to a washing and protecting combination. The combination comprises the components in percentage by weight as follows: 5.0-40 percent of surfactant, 0.1-0.8 percent of hydroxypropyl guar gum trimethyl ammonium chloride, 0.5-2 percent of glycerine, 0.05-0.1 percent of EDTA-2Na, 0.05-0.1 percent of bisabolol, 0.1-0.5 percent of antiseptic, 0.2-0.8 percent of thickener, 0.1-1 percent of essence and the balance of 100 percent of water, wherein the surfactant is formed by compounding cocoamidopropyl betaine, alkyl polyglucoside, sodium lauroylsarcosinate and PEG-80 sorbitan laurate. The washing and protecting combination is prepared by a natural amino-acid surfactant and an amphoteric surfactant which are low in excitation and good in foaming performance, can provide formula foaming power and lower formula degreasing power, prevents dryness of hair, meanwhile, can improve performance of wet rinse and dry carding on account of the added hydroxypropyl guar gum trimethyl ammonium chloride, can be absorbed by the hair and then plays excellent roles of preventing static electricity and conditioning, and can greatly buffer the excitation of the surfactant.

The invention relates to a preparation method for a cable insulating material capable of realizing self-repairing of early-stage electrical-tree defects. The cable insulating material is composite material prepared by blending 1 to 3 wt% of a microcapsule containing a liquid repairing agent and a low-density polyethylene base material, then adding 0.02 to 0.05 wt% of a Grubbs catalyst, carrying out extrusion with an extruder and then carrying out cooling and drying, wherein the microcapsule containing the liquid repairing agent is a urea-formaldehyde resin-coated dicyclopentadiene nanometer microcapsule. Early-stage electrical-tree defects are repaired through a chemical reaction of the repairing agent with the catalyst imbedded in a substrate, so the dielectric strength of the cable insulating material is prevented from obvious decrease. The material prepared in the invention has the characteristics of simple preparation, high repairing efficiency, capacity of maintaining dielectric strength for a long time, etc., is extensively applicable to electric insulation layers of cables and has effectively improved service life and usage stability.

A composition in the form of medicine, beverage, or food for clearing lung-heat away is prepared from the fruit, stem and leaf of tomato through extracting in water and / or alcohol by digestion to obtain liquid extract and carrying it by proper carrier.

The invention provides a mask solution as well as a preparation method and application thereof. The mask solution is prepared from the following components in percentage by weight: 0.5 to 1 percent ofoligopeptide-1, 1 to 3 percent of beta-glucosan, 0.03 to 0.08 percent of sodium hyaluronate, 1.55 to 2.05 percent of trehalose, 3 to 4.5 percent of glycerinum, 1 to 3 percent of betaine, 2 to 3.5 percent of a PEG (Polyethylene Glycol) / PPG (Polypropylene Glycol)-17 / 6 copolymer, 0.06 to 0.1 percent of carbomer, 0.10 to 0.18 percent of xanthan gum, 0.02 to 0.08 percent of triethanolamine, 3 to 6 percent of propylene glycol, 0.4 to 0.7 percent of p-hydroxyacetophenone, 6.8 to 12.5 percent of a lactobacillus / rice fermentation product, 0.2 to 0.4 percent of phenoxyethanol, 0.01 to 0.1 percent of methylparaben, 0.3 to 0.7 percent of 1,2-hexanediol and 100 percent of purified water. A mask prepared by the invention has better moisturizing effect and better repairing performance and is capable ofreducing the skin sensitivity.

The invention discloses a method for guaranteeing the reliability of data collection transmission in a wireless sensor network, which comprises: adopting a high reliable network organizing method on the basis of dynamic working period adjustment by each sensor node in a sensor network and adopting a high reliable data transmission method on the basis of 2 phase retransmission between sensor nodes and between convergent nodes in the sensor network. On the aspect of network organization reliability guarantee, working modes of the sensor nodes are divided into two modes of normal work and network repair, intermittent working of the nodes under the two modes can be guaranteed through the dynamic working period adjustment, thereby guaranteeing the node lower power consumption characteristics and rapid network repair ability simultaneously. On the aspect of data transmission reliability guarantee, the high reliable data transmission method on the basis of 2 phase retransmission is adopted to guarantee the data integrity when data transmission errors and even chain interruption appear, and the influence of the data transmission errors on the data real time performance is lowered to the minimum.

The invention discloses a water ecology restoration device and relates to the technical field of ecological restoration. The water ecology restoration device comprises a floating plate, two floating airbags are respectively fixedly connected to two bottom sides of the floating plate, a restoration box is fixedly connected to the bottom of the floating plate through connecting blocks, a liquid medicinal case is fixedly connected to the right side of the top of the floating plate, a quantitative control unit is fixedly connected to the top of the liquid medicinal case, a fixing box is fixedly connected to the left side of the top of the floating plate, a waterproof jacket is fixedly connected to the middle of the top of the floating plate, a first motor is fixedly connected to the top of theinner wall of the waterproof jacket, and the output shaft of the first motor penetrates the floating plate to extend to the bottom of the floating plate. By the arrangement, problems that an existingwater restoration device is slow in water restoration and poor in restoration effect are solved, water restoration capability is improved, pollution to water is fundamentally solved, and continuous deterioration of ecological environment is avoided.

The invention relates to the fields of medicine and biology, in particular to an organ preservation solution and a preparation method thereof. Every 1000mL of the organ preservation solution is prepared from the following components by weight: 3.0-15.0g of sodium citrate, 10.0-30.0g of potassium citrate, 5.0-15.0g of mannitol, 0.5-1.2g of potassium chloride, 0.5-1.8g of magnesium sulfate heptahydrate, 0.5-25.0g of a pH buffer pair, 0.2-25.0g of energy substrate and the balance of water for injection. The organ preservation solution also contains one or more of laminarin, trehalose, laminine and betaine. The organ preservation solution is low in price and efficient, and is suitable for preserving multiple organs.

The invention discloses a pre-embedded bag for multi-stage remediation of uranium-contaminated soil and a use method thereof, and belongs to the technical field of uranium-contaminated soil remediation. The pre-embedded bag for multi-stage remediation of uranium-contaminated soil can be pre-embedded by a soil cleaning and per-embedding manner, on the one hand, uranyl ions in the soil are transferred through a strict water-conducting network, a large amount of uranyl ions are actively and quickly collected into the pre-embedded bag to facilitate fixed-point remediation, on the other hand, a special soil remediation agent is used to greatly improve adsorption and accumulation for uranyl ions, agglomeration of uranyl ions is improved based on nano porous properties, and uranyl ions are filledin micro-pores to avoid contamination and diffusion. After the active primary remediation, uranyl ions in the uranium-contaminated soil are reduced to a certain value, then natural secondary remediation, namely heavy metal uranium enrichment plant remediation, is followed, the soil organic matter content and soil fertility are increased, a soil surface structure is improved and maintained, and asolid foundation for direct use of the soil after uranium pollution remediation is laid.

The invention relates to a protein skin care product with skin repairing and maintenance functions. The protein skin care product contains a keratin composition, wherein the keratin composition contain the following components in mass fraction in the protein skin care product: 0.3-5% of keratin, 0.1-1% of sodium alginate and 0.1-5% of polysaccharide; the keratin has the molecular weight of 10000-70000 Dalton; and the polysaccharide is at least one of fructose, fructo-oligosaccharide, cationic fructo-oligosaccharide, hyaluronic acid and salt thereof as well as chitosan. The protein skin care product provided by the invention can promote absorption of cells on protein, so that self renewing and repairing capability of skin cells is further improved, and especially the effect of repairing skin after ultraviolet burn is improved.

The invention discloses a cartilage tissue engineering scaffold and a preparation method thereof and belongs to the field of cartilage repair. The cartilage tissue engineering scaffold comprises a chitosan hydrogel outer skeleton and at least one decalcified cortical bone matrix microsphere coated in the chitosan hydrogel outer skeleton and with bone marrow mesenchymal stem cell affinity peptide modified on the surface, wherein diameter of each decalcified cortical bone matrix microsphere is 500-800 micrometers. The cartilage tissue engineering scaffold has high rheological property, easiness in plasticizing, biomechanical strength and performance of specifically gathering bone marrow mesenchymal stem cells, thereby being suitable for cartilage defect areas different in shape, lasting in effect and capable of acquiring more differentiated cartilage cells, has high cartilage tissue repair ability and is convenient for large-scale popularization and application.

The invention belongs to the technical field of storage, regeneration and repair of cells and discloses low-temperature storage liquid for cells. The low-temperature storage liquid is mainly preparedfrom the following components in percent by mass: 0.8%-1.5% of mannitol, 2%-3% of human serum albumin, 3%-7% of low-molecular dextran, 0.1-0.3% of glutathione, 0.5%-2% of epigallocatechin gallate, 3%-5% of adenosine, 0.5%-1% of glucose, 0.8% of NaCl, 0.2% of KCl, 0.1% of CaCl2 and the balance of water. The invention also provides sodium alginate gel, which contains sodium alginate, calcium chloride, hyaluronic acid and the low-temperature storage liquid for the cells and the like, and also provides cell gel and a preparation method thereof as well as application of the low-temperature storageliquid for the cells, the sodium alginate gel and the cell gel. The invention has the advantages that the low-temperature storage liquid for the cells can maintain cell activity for longer time at temperature of 2-8 DEG C, the sodium alginate gel can be used as temporary short-term storage materials of cells from various sources and brackets of cell tissue engineering, and the cell gel can be usedas a medical wet wound dressing and can be used for repairing soft tissues, refractory-healing wound skins and mucosal wound injuries.

The invention belongs to the technical field of functional materials, and particularly relates to an autonomous self-repairing elastomer with high tensile property as well as a preparation method andapplication thereof. The self-repairing elastomer with high tensile property is a product obtained by chemically crosslinking organic silicon resin PSi, a disulfide bond monomer SS, a weak hydrogen bond compound IP and a strong hydrogen bond compound BNS. A dynamic supramolecular polymer network is spontaneously formed in an organic silicon resin polymer main chain, an elastomer has high strengthand high elasticity due to strong cross-linked H bonds, and strain energy is dissipated by weak H bonds through effective reversible bond breakage and reforming; and the disulfide bond is helpful forimproving the self-repairing performance of the elastomer. The dynamically built synergistic effects impart ultra-high stretchability (approximately 14,000%) to the elastomer as well as rapid autonomous self-healing capabilities underwater, in refrigerated (4 DEG C) freezing temperatures (-20 DEG C) or in supercooled seawater (30% NaCl solution at the temperature of -10 DEG C or less).

The invention relates to a display panel that the mending line and signal line set on different base board. The display panel includes a mending line to take place of the broken signal line. Plural signal lines are set on the first side of the first base board of display panel. And plural mending lines are set on the first side of second base board of display panel. The first side of the second base board is faced to the first side of the first base board. A liquid crystal layer is set between the first base board and the second base board. The invention could effectively decrease resistance-capacitance delay effect and power consumption of liquid display panel.

The invention discloses a horizontal-array high-power semiconductor laser capable of replacing a chip, which comprises a refrigerator. A liquid passage is arranged in the refrigerator; the upper end face of the refrigerator is a horizontal mounting surface; a plurality of laser chip mounting components, which are parallel to and independent from one another, are arranged on the horizontal mounting surface; each laser chip mounting component consists of the chip, and a lower insulating strip, a positive heat sink, an upper insulating strip, a chip cathode connection piece and an electrode connection piece which are sequentially laminated and fixed from bottom to top; the anode surfaces of the chips are connected with the positive heat sinks, while cathode surfaces are connected with the electrode connection pieces; and fixed plates are arranged at the upper ends of the plurality of laser chip mounting components. In the horizontal-array high-power semiconductor laser capable of replacing the chip, the plurality of independent laser chips (bars) are taken as cores and are arranged into a laser chip mounting component array in a horizontal direction, and the plurality of laser chip mounting components share the refrigerator, so thermal resistance can be reduced, radiation capacity can be improved, the optical output power of the laser is improved, and the quality of laser beams can be greatly improved under the condition of adding an alignment system.

The invention belongs to the field of daily chemicals and particularly relates to a cream shampoo formula. A novel cream shampoo comprises, by weight, 5.0% to 25.0% of surface active agents, 0.5% to 5% of cationic conditioners, 0.5% to 4% of humectants, 0.01% to 0.05% of chelating agents, 0.5% to 5% of siloxane, 0.1% to 3% of sunscreens, 0.2% to 0.8% of thickening agents and the balance water. The novel cream shampoo further comprises, by weight, 0.1% to 5.0% of cationic protein. According to the novel cream shampoo, the foaming performance is good, the shampoo has a moderate cleaning capability, the excessive degreasing and hair dryness are absent, the resistance of combing wet hair is low, the carding effect after hair is dried is good, the deposition of various conditioners is moderate, visible or obvious residues can not be generated, the cream appearance is attractive, the repairability is high, and the cream shampoo can be safely used.

The invention belongs to the technical field of metal surface treatment, and discloses a zinc-based composite coating with rapid repairing capability as well as a preparation method and application thereof. The zinc-based composite coating is prepared through the following steps that reduced graphene oxide coated aluminum powder and zinc powder are adopted, a cold spraying method is adopted for deposit a feed on the surface of a substrate, and reduced graphene oxide is uniformly dispersed in the zinc-aluminum phase interface. The thickness of the zinc-based composite coating is 0.05-1 mm. Thecomposite coating has lower electrode potential, a stable corrosion product layer can be quickly generated when the coating is complete, the consumption rate of the coating is reduced, and the protection life of the coating is prolonged. When the coating is damaged and the substrate is exposed, the coating and the substrate form an original battery to serve as an anode to form cathode protection on the substrate, so that a compact corrosion product can be quickly generated to fill a defect of the coating, so that a corrosion medium is prevented from damaging the substrate, and the coating canbe applied to the field of cathode protection of carbon steel.

The invention discloses a thermo-sensitive hydrogel. The thermo-sensitive hydrogel comprises the following raw materials: a cytokine activity stabilizer, an epidermal stem cell conditioned culture medium and a collagen cross-linking solution. The cytokine activity stabilizer is added into the epidermal stem cell conditioned culture medium, so that multiple cytokines secreted by EpSCs are stabilized, the half-life period of each of the multiple cytokines is prolonged, the effect of each of the multiple cytokines on trauma repair is prolonged, and further, wound healing is promoted. In addition, the invention discloses a preparation method of the thermo-sensitive hydrogel, which has the characteristics of being simple to operate, random in molding and capable of in-situ gelling; the prepared hydrogel is slightly-viscous and clear liquid under the condition of 4-25 DEG C, is a solid gel when being put under the condition of 30-37 DEG C, has better mechanical strength and better biological compatibility and can promote fibroblast proliferation and facilitate fresh skin apparent and functional recovery, so that wounds are healed with high quality.

The invention provides modified emulsified asphalt as well as a preparation method and application thereof. The modified emulsified asphalt is prepared from the following component raw materials: 100parts by weight of emulsified asphalt, 0.05 to 0.1 part by weight of graphene, 2 to 6 parts by weight of modifier, 5 to 15 parts by weight of modified polyvinyl alcohol solution, 1 to 4 parts by weight of aid and 0.5 to 2 parts by weight of retarder, wherein the size dimension of the graphene is 0.5 to 3mu m and the thickness is 0.05 to 1.2nm. Compared with the prior art, the preparation method ofthe modified emulsified asphalt, disclosed by the invention, has the advantages that excellent properties of the graphene are utilized and are matched with certain use amounts of the components and colloid in the emulsified asphalt, and thus a high-strength grid skeleton structure is formed and further the modified emulsified asphalt with good layer sealing and crack repairing effects as well ashigh water damage resistance is obtained. An experimental result shows that the modified emulsified asphalt provided by the invention can be used for layer sealing and crack repairing of pavements, has better repair effects on disease cracks, and can be used for effectively solving the problems of pavement drainage difficulty and water damage.

The invention relates to an RBF neural network-based image watermark embedding and extraction method and device. According to the method, an original watermark image is encrypted, a carrier image is trained by using an optimized RBF neural network, and the encrypted watermark image is embedded into the original watermark image, wherein the optimal learning rate is set in an RBF neural network algorithm to realize self-adapting adjustment of a weight of the algorithm. The encrypted watermark image embedded in the carrier image is extracted through the optimized RBF neural network algorithm and a margin calculation, and the encrypted watermark image is subjected to recovery to obtain the original watermark image. The device comprises a scrambling module, an embedding module and an extraction module. Through the adoption of the method and the device, a contradiction between imperceptibility and robustness of the watermark image is balanced.