962results about How to "Improve repair effect" patented technology

The invention relates to the technical field of defect detection, and discloses a pipeline repairing method and system based on defect detection. The method comprises the following steps: performing acoustic detection on a pipeline based on a multi-frequency sound wave signal to obtain pipeline sound field data; carrying out electromagnetic wave scattering detection on the pipeline to obtain electromagnetic scattering data; constructing a sound field distribution diagram in the pipeline and an electromagnetic property distribution diagram on the surface of the pipeline; performing feature extraction on the sound field distribution diagram to obtain a first detection feature set, and performing feature extraction on the electromagnetic characteristic distribution diagram to obtain a second detection feature set; inputting the first detection feature set and the second detection feature set into a space-time diagram convolutional network model for pipeline defect diagnosis to obtain a defect position and a defect type; and performing causal reasoning and repair scheme matching on the pipeline according to the defect position and the defect type to obtain a target pipeline repair scheme, thereby improving the accuracy of pipeline defect detection, thereby improving the accuracy of pipeline repair.

The invention relates to the technical field of ecological environment protection, in particular to an ecological environment damage intelligent identification management method based on multi-source data fusion, which comprises the steps of data acquisition and preprocessing, data fusion and feature extraction, ecological environment damage evaluation model construction, damage dynamic analysis and trend prediction, restoration suggestion generation and visual display. The method comprises the following steps: collecting water quality, atmosphere, biological and social economic data in real time through a sensor network deployed in an ecological sensitive area, preprocessing the data, extracting key features by adopting a multi-modal data fusion technology and a deep learning model, and constructing an ecological damage assessment model; the change rule of ecological damage and the potential high-risk area are predicted based on a time sequence analysis method, and an optimal ecological restoration scheme is generated in combination with a particle swarm optimization algorithm. According to the method, the evaluation result and the restoration suggestion are displayed through the visual interface, a scientific basis is provided for decision makers, and the efficiency and the effect of ecological environment restoration work can be improved.

The invention relates to the technical field of medical instruments, in particular to a postpartum rehabilitation magnetic therapy device and method.The postpartum rehabilitation magnetic therapy device comprises a placement plate used for being placed on a chair, a magnetic therapy coil used for placing the sacral region is embedded in one side of the top end of the placement plate, and an anus lifting assembly is arranged on the magnetic therapy coil; auxiliary massage assemblies for placing two sides of legs are connected to the top end of the placement plate and located on two sides of the anus lifting assembly, and the input end of the magnetic therapy coil is connected with the output end of the rectifier; through the use of the anus lifting assembly, under the magnetic therapy effect of the magnetic therapy coil, people can be helped to carry out anus lifting movement, so that postpartum disc bottom repair is more perfect, through the use of the auxiliary massage assembly, legs at the disc bottom position can be massaged up and down, surrounding muscles move along with the legs, and the postpartum repair effect is improved.

The invention relates to the technical field of program exception positioning, in particular to an AI-based data interface program exception fault pre-positioning algorithm, which comprises the following steps: S1, data stream pre-analysis; s2, capturing an abnormal signal; s3, performing abnormal clustering and feature extraction; s4, interface behavior modeling is carried out; s5, abnormal traceability positioning; s6, generating a self-adaptive repair suggestion; s7, performing feedback circulation and continuous learning; and S8, performing visualization and report generation. Through the steps of data stream classification, key field extraction, behavior modeling and the like, the system can accurately capture abnormal signals in mass data, meanwhile, an abnormal mode is visually displayed through clustering analysis and a dimension reduction technology, a reliable foundation is laid for subsequent positioning and repairing, and in addition, the method has the advantages of being high in practicability and easy to popularize. The abnormal source is quickly positioned by adopting methods such as topological sorting and causal network reasoning, the false alarm rate and the missing report rate in the positioning process are effectively reduced by combining a sliding window and time sequence analysis, and the problem solving efficiency is greatly improved.

The invention discloses an agricultural solid waste contaminated soil remediation device, and relates to the field of soil remediation, the agricultural solid waste contaminated soil remediation device comprises a base plate, a storage box and a first liquid outlet pipe, the bottom of the base plate is fixedly connected with four electric wheels, the upper portion of the base plate is fixedly connected with a handheld handrail, the storage box is fixedly connected to the upper portion of the base plate, and the first liquid outlet pipe is fixedly connected to the base plate; the upper end of the first liquid outlet pipe penetrates through the base plate to communicate with the storage box, the bottom of the base plate is fixedly connected with a first extension plate, and the first extension plate is fixedly connected with a first motor. According to the device, soil on the filter plate is vibrated, so that the soil leaks out of filter holes in the filter plate, and building concrete stones larger than the filter holes cannot fall off; and the concrete stones embedded in the soil can be effectively removed, and the blocking of the stones can be reduced during the subsequent injection of the repairing liquid, so that the repairing liquid can be fully permeated into the soil.

The invention provides a pharmaceutical composition for preventing and treating gingival atrophy and a preparation method and application thereof, and belongs to the technical field of biological medicine. The composition contains finless eel peptide, skipjack elastin peptide, quinoa rice extract, gleditsia sinensis rice extract, calendula extract, chamomile extract, chitosan, peach gum, hydroxyapatite and the like, and the finless eel peptide, the skipjack elastin peptide, the quinoa rice extract and the gleditsia sinensis rice extract are specific enzymatic hydrolysates. The monopterus albus peptide, the skipjack elastin peptide, the quinoa rice extract and the gleditsia sinensis rice extract jointly promote repair and regeneration of gingival tissues. The calendula extract, the chamomile extract and the chitosan have anti-inflammatory and antibacterial effects, so that gingival inflammation is relieved, and bacterial infection is prevented. And the chitosan and the calendula extract can accelerate the repair of damaged gingival tissues. The monopterus albus peptide, the skipjack elastin peptide and the hydroxyapatite are matched for use to jointly maintain the normal structure and function of gingiva. All the components have a synergistic effect, so that gingival atrophy can be effectively prevented and improved.

The invention relates to a spray-seeding process for quickly repairing vegetation in a slope area of a power transmission and transformation project, which comprises the following steps of: cleaning a slope of the power transmission and transformation project, and removing pumice stones, sundries and a loose soil layer on the slope surface; selecting a seed formula with a certain proportion for planting preparation; a matrix layer material and a seed layer biological matrix material are adopted as soil matrixes; adding a proper amount of organic fertilizer and long-acting slow-release compound fertilizer, and adding a proper amount of growth regulator; a spray-seeding device is adopted to evenly stir spray-seeding materials and then spray the spray-seeding materials to the slope surface, a certain distance and a certain angle are kept between a spray gun and the slope surface, and different spray-seeding modes are adopted for side slopes with different gradients; covering in time after spray-seeding is completed so as to maintain soil humidity and temperature and prevent seeds from being washed by rainwater and exposed to the sun; the spray-seeding technology is easy to operate, short in construction period, low in cost and suitable for large-scale popularization and application to rapid restoration of vegetation in the slope area of the power transmission and transformation project.

The invention discloses a gas-insulated switchgear gas leakage repairing method, system, equipment and medium, and relates to the field of equipment repairing. The method comprises the following steps: scanning the gas insulated switchgear to position a gas leakage part, and preprocessing the gas leakage part; determining a scheme for blending a target interpenetrating network coating material according to the characteristics of the air leakage part and the working environment, and coating the pretreated air leakage part with the blended target interpenetrating network coating material to form a target coating; curing parameters are determined according to the type and thickness of the interpenetrating network coating material and the working environment, the power of a heating source is determined through the curing parameters, the target coating is cured through the heating source based on the power of the heating source, and the curing parameters comprise curing time, temperature, humidity and air pressure; and performing air leakage detection on the cured air leakage part to evaluate the repair effect. By implementing the technical scheme provided by the invention, the air leakage problem can be effectively and durably repaired.

The remediation method for the moderately and severely cadmium-polluted rice field aims at strictly controlled cadmium-polluted rice fields, and is divided into two stages of strict control and safe utilization for remediation. In the strict management and control stage, an activating agent is applied to the soil in spring, then microalgae are inoculated, cadmium-enriched plants are planted, the plants are collected after being full of the microalgae, the plants are harvested when the plants grow to the enrichment extreme value, stubbles are reserved for growth, and the steps are repeated till winter; applying an activating agent in winter, planting green manure, and harvesting in spring in the next year; the process is cyclically carried out until the cadmium content of the soil is reduced to a safe utilization level. Entering a safe utilization stage, applying an activating agent in spring, inoculating nitrogen-fixing cyanobacteria, collecting the cyanobacteria after the cyanobacteria overgrow, and repeating the steps until the rice seedlings are transplanted; applying nitrogen-fixing blue-green algae, and planting rice; applying an activating agent after rice harvesting, planting winter green manure, and harvesting in next spring; the process is cyclically carried out until the cadmium content of the soil is reduced to a preferential protection level. The method is low in cost, high in remediation efficiency and good in effect, and a new way is provided for cadmium-polluted rice field remediation.

The invention discloses a centella asiatica plant extraction repairing agent and application thereof in cosmetics. The centella asiatica plant extraction repairing agent comprises the following components: an olive leaf extract, a centella asiatica root extract and an oat kernel extract. According to the preparation process of the centella asiatica plant extraction repairing agent, plant water-soluble active ingredients are obtained by adopting enzymolysis and alcohol extraction modes, plant oil-soluble active ingredients are obtained by adopting critical CO2 extraction, and then a novel preparation is prepared by adopting an ultrasonic emulsification technology, so that the repairing agent can permeate into skin cuticles more easily, the effect of active matters can be brought into full play, and the repairing agent has a good application prospect. When the composition is applied to cosmetics, a good repairing effect can be realized.

The invention relates to the field of environmental remediation, and discloses a remediation method for high-concentration organic pollutants in soil, which comprises the following steps: firstly, injecting a nano zero-valent iron (nZVI) suspension into the contaminated soil for chemical reduction treatment, then adding sodium persulfate for oxidation treatment, and then adding a nano zero-valent iron (nZVI) suspension into the contaminated soil; the complex organic pollutants are converted into biodegradable intermediate products; then, two-stage microbial communities are introduced in sequence, the first-stage microbial community is used for degrading alcohol and ketone intermediate products, the second-stage microbial community is used for degrading organic acid intermediate products, and thorough mineralization of pollutants is achieved. According to the method, the pollutant degradation rate and the final removal effect can be remarkably improved, and the method is suitable for treatment scenes of various high-concentration organic pollutants and has high adaptability and economic benefits.

The invention discloses a method for reseeding and repairing alpine degraded grassland, which comprises the following steps: step 1, cutting: cutting native vegetation of a sample plot with the stubble height of 3-5cm; 2, sowing is conducted, before the rainy season comes, drilling is conducted on target grass seeds in a manual ditching mode, the target grass seeds are 2-3 grass seeds selected from each type of gramineae grass, leguminous grass and miscellaneous grass and mixed according to a certain proportion, and earthing is conducted after sowing is completed; 3, after-sowing management is conducted, agricultural measures such as impurity removal, fertilization and watering do not need to be conducted after sowing is completed, and grazing is forbidden for two years. According to the method, different functional types of plants and combinations suitable for the alpine region are screened out, the method suitable for reseeding restoration of the alpine degenerated grassland is formulated, the reseeding cost is controlled, meanwhile, plant communities high in yield, high in stability and diverse in function are built, and the problem of restoration of the degenerated grassland in the alpine region is solved.

The invention provides a recombinant XVII type collagen with a triple helix structure, and belongs to the technical field of biological proteins. The amino acid sequence of the collagen comprises one or more amino acid residue repetitive units, each repetitive unit comprises a sequence as shown in SEQ ID NO.1 or SEQ ID NO.2, the number of repetitions is n, and n is larger than 1 and smaller than or equal to 60. The recombinant XVII type collagen provided by the invention is simple in production process, relatively high in expression quantity, low in immunogenicity, high in safety, relatively good in stability of the triple-helix structure, and strong in supporting capacity for skin cells; efficacy experiments show that the collagen has higher cell adhesion, wound healing promotion and hair follicle repair promotion capability than XVII type collagen products in the market at present, and can be widely applied to the fields of food, health care products, cosmetics, medical instruments and the like.

The invention relates to the technical field of cement-based anticorrosive materials, and particularly discloses a modified magnesium phosphate cement anticorrosive material as well as a use method and application thereof. The anticorrosive material comprises the following components in parts by weight: 100 parts of modified magnesium phosphate cement, 3-15 parts of a retarder, 1-10 parts of an epoxy resin glue solution, 0.5-5 parts of metakaolin and 15-20 parts of water. The modified magnesium phosphate cement comprises dead burned magnesium oxide and modified phosphate in a mass ratio of (1-4): 1. The modified phosphate is prepared from the following raw materials: nano aluminum oxide, sodium citrate and phosphate in a mass ratio of (0.5-1.5): (0.5-1.5): (20-25). The epoxy resin glue solution comprises uncured epoxy resin glue and a curing agent. The anti-corrosion material provided by the invention has the technical advantages of strong adhesive property and excellent anti-corrosion property, and can better provide protection for a steel structure serving in a marine environment.

The invention discloses an expressway pavement crack repairing device, and particularly relates to the technical field of pavement crack repairing, the expressway pavement crack repairing device comprises a repairing branch pipe, a sleeving block, a fixing frame and a repairing width linkage adjusting mechanism; the repairing width linkage adjusting mechanism comprises an adjusting motor, an adjusting screw rod, a threaded sleeve block, a supporting frame, two sliding shafts and a width distance sensor, and further comprises a repairing and slicking width synchronous adjusting mechanism and a crack width positioning detection assembly. Through the repairing width linkage adjusting mechanism, the repairing device can be automatically adjusted to the repairing position with the specified width according to the width of the highway pavement gap, covering, laying and repairing are achieved, the repairing range is wider, the repairing effect is better, and therefore the problem that it is difficult to automatically adjust to the repairing position with the specified width is solved. And the problems of poor self-adaptive adjustability and poor repairing effect of the pavement repairing of the expressway due to difficulty in adjusting to a specified slicking position are solved.

The invention relates to a self-repairing waterborne polyurethane composite elastomer based on dynamic interface reinforcing and toughening as well as a preparation method and application thereof, and belongs to the technical field of self-repairing high polymer materials. The method comprises the following steps: preparing a waterborne polyurethane emulsion; the preparation method comprises the following steps: uniformly dispersing polyvinylpyrrolidone in an ethanol solution, adding polyfunctional mercaptan and polyfunctional isocyanate, and adding an amino-containing imidazole monomer to obtain microsphere powder; and uniformly dispersing the microsphere powder in a waterborne polyurethane emulsion, adding a metal salt solution, and then volatilizing water to form a film material, thereby obtaining the self-repairing waterborne polyurethane composite elastomer based on dynamic interface reinforcement and toughening. The self-repairing waterborne polyurethane elastomer with excellent comprehensive performance is obtained by designing the structure of waterborne polyurethane, modifying the surface of the microsphere and introducing a dynamic interface for compounding, and the strength, the toughness and the self-repairing capability of the elastomer are simultaneously improved.

The invention relates to a video restoration method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: acquiring an original video, extracting first edge feature information of the original video, acquiring a video to be restored, encoding a first reference video frame selected from the video to be restored to obtain a first encoding feature, adding noise to the first encoding feature to obtain a first reference video frame feature, acquiring a random noise signal, and outputting the random noise signal to the video to be restored. Fusing the first reference video frame feature and the random noise signal to obtain a noise-added noise feature, obtaining first mask information indicating a to-be-repaired area in the to-be-repaired video, defining a noise reduction control condition based on the first mask information and the first edge feature information, and performing noise reduction on the noise-added noise feature according to the noise reduction control condition to obtain a to-be-repaired video. And carrying out noise reduction on the video features to obtain the denoised video features, and decoding the denoised video features to obtain a restored video. By adopting the method, the video restoration effect can be improved.

The invention discloses a natural vegetable oil composition as well as a preparation method and application thereof. The natural vegetable oil composition comprises sunflower seed oil, simmondsia chinensis seed oil, grape seed oil and camellia seed oil. The feeding mass ratio of the sunflower seed oil to the simmondsia chinensis seed oil to the grape seed oil to the camellia seed oil is 1: (0.5-1.5): (0.5-1.5): (0.5-1.5); the components are uniformly mixed during preparation, practice shows that the combination of the four natural plant-derived oils has an excellent moisturizing effect and a skin repairing effect and has a remarkably better and more balanced effect compared with a single or partial combination of the four natural plant-derived oils, and particularly, the remarkable moisturizing and skin repairing effects can be obtained only by a small addition amount; the composition is beneficial to addition and use in cosmetics, does not need to adopt excessive emulsifiers for additional emulsification and dispersion, is beneficial to reduction of irritation brought by the emulsifiers, and is good in use experience.

The invention discloses an OLED screen body laser repairing device and a defect repairing system, and belongs to the technical field of OLED flexible display screen processing. The OLED screen body laser repairing device comprises a base, a portal frame, a repairing mechanism and a detection mechanism, the portal frame is fixedly arranged on the base, the repairing mechanism comprises a laser unit, the laser unit is used for repairing an OLED screen body, the detection mechanism is used for collecting defect information on the OLED screen body, and the detection mechanism and the repairing mechanism are arranged on the portal frame in a spaced mode. According to the OLED screen body laser repairing device and the defect repairing system, the portal frame is fixed on the base, so that the defect repairing process of the OLED screen body can be carried out in a mode that the portal frame is fixed, the repairing effect of the OLED screen body is improved, and the repairing efficiency and yield of the OLED screen body are improved.

The invention relates to the field of ecological environment restoration, in particular to a reseeding device for grassland ecological restoration, which comprises a vehicle body, a driving unit, a monitoring unit, a reseeding unit and a soil covering unit are mounted at the bottom of the vehicle body, and the driving unit comprises a first driving part; the reseeding unit comprises a plowing assembly and a seeding assembly, the plowing assembly comprises a shell, the shell is connected with a first driving piece, an opening is formed in the shell, a locking piece is installed at the opening, a plough claw is hinged to the shell, a sleeve is hinged to the plough claw through a connecting rod, and an eccentric roller is embedded in the sleeve; the sowing assembly is installed in the vehicle body, a sowing opening is formed in the bottom of the vehicle body and provided with a sealing cover, the sealing cover is provided with a power piece and a triggering assembly, the triggering assembly is in signal connection with a controller, and the monitoring unit, the first driving piece, the locking piece and the power piece are all in signal connection with the controller. By monitoring the ecological condition of the grassland and automatically turning up and sowing grass seeds according to the real-time monitoring data, the damaged grassland ecology is efficiently and accurately restored.

The invention discloses a spraying device for grassland ecological soil remediation in the technical field of ecological remediation. The spraying device comprises a vehicle body, a storage assembly is installed at the top end of the vehicle body, a lifting cavity is formed in the vehicle body, a lifting assembly is arranged in the lifting cavity, a supporting plate is fixedly connected to the bottom of the lifting assembly, and a plurality of spraying assemblies are linearly arrayed at the bottom of the supporting plate; a pump assembly is arranged in the vehicle body; the spraying assembly and the storage assembly are both communicated with the pump assembly; and each spraying assembly comprises a rotating hole column fixedly connected to the bottom of the supporting plate, a spraying ring is annularly arranged on the surface of each rotating hole column, a plurality of spraying openings communicating with the storage assembly are formed in the bottom of each spraying ring, and a plurality of injection assemblies are arranged in each rotating hole column. Through cooperative assistance of the lifting assembly, the spraying assembly and the injection assembly, when the grassland surface soil is hard, spraying remediation can be conducted on the grassland soil surface, meanwhile, injection of liquid medicine can be completed by going deep into the grassland soil, and the ecological remediation effect of the grassland soil is improved.

The invention relates to an in-situ osteochondral regeneration and repair scaffold and a preparation method thereof, the in-situ osteochondral regeneration and repair scaffold prepared by the method comprises a cartilage layer, a connecting layer and a subchondral bone layer, the porosity of the cartilage layer is not less than 85%, the Young modulus is 6-13KPa, and the aperture is 130-140 [mu] m; the porosity of the connecting layer is not lower than 95%, the Young modulus is 4-19 KPa, and the aperture is 50-120 [mu] m; the porosity of the subchondral bone layer is not lower than 95%, the Young modulus is 4-19 KPa, and the aperture is 300-400 microns. The in-situ osteochondral regeneration and repair scaffold prepared by the method has good biocompatibility, is beneficial to attachment, migration and proliferation of cartilage cells and bone marrow mesenchymal stem cells, does not cause immunological rejection, provides a better scaffold environment for repair after osteochondral implantation, and has a good application prospect in the field of in-situ osteochondral regeneration and repair, and experiments prove that the in-situ osteochondral regeneration and repair scaffold has a good application prospect in the field of in-situ osteochondral regeneration and repair. The in-situ osteochondral regeneration and repair scaffold does not affect cell migration; animal experiments prove that the in-situ osteochondral regeneration and repair scaffold has a good repair effect on rat osteochondral defects.

The embodiment of the invention provides a log-based abnormal task repairing method and device, electronic equipment and a medium, and belongs to the technical field of financial science and technology and artificial intelligence. The method comprises the steps of obtaining initial task repair data of abnormal task data from a task repair rule base; performing validity evaluation on the initial task repair data to obtain a valid or invalid evaluation effect; if yes, taking the initial task repair data as target task repair data; and if not, obtaining target task repair data through the task repair model. According to the embodiment of the invention, by performing validity evaluation on the initial task repair data, invalid or wrong repair attempts are avoided, when the initial task repair data is invalid, the target task repair data are acquired through the task repair model, the reliability of repairing the abnormal task is improved in combination with historical data, manual intervention of abnormal task repair is not needed, and the efficiency of repairing the abnormal task is improved. The abnormal task can be automatically repaired, and the repairing effect of the abnormal task is improved.

The invention discloses a defect layout repairing method, device and equipment, a medium and a product, and relates to the technical field of semiconductor integrated circuits. The defect layout repairing method comprises the following steps: acquiring a first defect area and a second defect area in a mask design layout, wherein the first defect area comprises the second defect area; according to the first defect area and the second defect area, a first repair evaluation value of the first defect area and a second repair evaluation value of the second defect area are determined, and the first repair evaluation value is used for representing the graph offset degree of the first defect area caused by repair of the second defect area; the second repair evaluation value is used for representing the graph offset degree of the second defect area caused by repairing the second defect area; moving the second defect area according to the first repair evaluation value and the second repair evaluation value to obtain a target defect layout; and repairing the target defect layout in the mask design layout to obtain a repaired mask layout.

The utility model discloses a steel ring rounding mechanism, which relates to the technical field of hub processing and comprises a workbench, a transmission cavity is arranged in the workbench, four sliding holes are arranged on the inner wall of the top of the transmission cavity, and two transverse sliding blocks and two longitudinal sliding blocks are respectively arranged in the four sliding holes in a sliding manner. During use, firstly, a steel ring is placed on the top of the workbench, the two transverse sliding blocks and the two longitudinal sliding blocks are driven by the sliding assembly to synchronously move in the axis direction, then the four U-shaped blocks and the four rotating rollers are driven to synchronously move in the axis direction, and the four rotating rollers make contact with the outer wall of the peripheral side of the steel ring; and then four limiting plates are driven to synchronously move downwards by rotating four threaded rods to limit the top of the steel ring, then four rotating rollers are driven by four rotating motors to synchronously rotate, then the steel ring is driven by the four rotating rollers to achieve the rotating function, and therefore the steel ring is rounded through an abutting piece and a restoring piece.

The invention provides a degradation reading method and device based on an erasure code storage system, and the method comprises the steps: receiving a data reading request, and checking whether target data corresponding to the data reading request comprises a lost data sub-block or not; under the condition of determining that target data corresponding to the data request comprises a lost data sub-block, determining a healthy data sub-block required by degradation reading and a target sub-strip corresponding to the lost data sub-block; the target sub-strip comprises an auxiliary repair data sub-block and a verification sub-block corresponding to the lost data sub-block; determining storage positions respectively corresponding to the health data sub-block, the auxiliary repair data sub-block and the verification sub-block; and reading the healthy data sub-block, the auxiliary repair data sub-block and the verification sub-block based on the storage position, performing data repair of the lost data sub-block according to the auxiliary repair data sub-block and the verification sub-block, and obtaining target data based on the healthy data sub-block and the successfully repaired lost data sub-block under the condition that the lost data sub-block is successfully repaired.

The invention relates to the technical field of soil improvement materials, and provides a soil heavy metal pollution repairing agent based on biomass power plant ash, which mainly comprises surface modified porous biomass power plant ash, polymer modified bentonite, a soil modified repairing agent and clay minerals. The surface modified porous biomass power plant ash is obtained through gamma-aminopropyltriethoxysilane and humic acid modified porous biomass power plant ash clustering, and the polymer modified bentonite is bentonite modified by acrylic acid and sodium carboxymethyl cellulose through a polymerization reaction. The preparation method comprises the steps of pretreatment of biomass power plant ash, liquid nitrogen freezing, freeze drying, porous structure formation, surface modification and the like. The components are mixed, granulated and molded, so that the obtained remediation agent can effectively reduce the bio-availability of heavy metals in soil, reduce the heavy metal absorption of crops and improve the soil environment quality.

The invention discloses an ecological restoration method for a subalpine meadow side slope after engineering disturbance, and the method comprises the steps: transplanting local native turf to a specific position of the side slope in a chessboard type layout mode, and stripping and filling the soil of the native turf into an unoccupied area except the transplanted turf, so that a local ecological system can be quickly restored, and the ecological restoration of the subalpine meadow side slope is facilitated. Meanwhile, the balance of a local ecological system is maintained, and the service function of the local ecological system is restored. According to the method, the local native turf is transplanted in a chessboard type layout mode, manpower and material resources are effectively saved, meanwhile, half of the native turf is transplanted to drive an original seed bank in soil to grow, vegetation coverage of the whole restoration area is promoted to be rapidly achieved, native vegetation is used for restoration, harm caused by using alien species is avoided, and the method is suitable for large-scale popularization and application. Meanwhile, the method has the advantages of low cost, high recovery speed, high survival rate and the like, and the purposes of recovering an ecological system by using local species and seed banks and recovering nature in a natural manner are achieved.

The invention belongs to the field of roof waterproof protection layers, and particularly discloses a roof waterproof protection layer construction method based on microbial concrete, which comprises the following specific steps: S1, microbial culture; s2, protective carrier wrapping; s3, preparing concrete; s4, concrete pouring; s5, concrete curing; according to the invention, expanded perlite particles are used as a carrier medium to respectively immobilize individual bacillus and aerobic mixed bacteria, so that the expanded perlite particles are activated and induced to form a composite mineralized structure when cracks are formed, the crack repairing effect is enhanced, and the high strength of aragonite and the good filling property of calcite are combined, so that the crack repairing effect is improved. According to the present invention, the expanded perlite particles are adopted as the carrier medium, and are combined with the hydrogel wrapping the surface of the bacteria-containing expanded perlite, such that the microorganism can be protected, the water storage agent can be used as the water storage agent, and the living environment of the microorganism can be enhanced.

The present invention relates to a pharmaceutical composition with joint repair efficacy, which is composed of collagen, chitosan and a pharmaceutically acceptable carrier, wherein the weight ratio of collagen to chitosan in the composition is 11:1-1:11, the average molecular weight of collagen is 3kDa-500kDa, and the weight average molecular weight of chitosan is 10000-200000. The pharmaceutical composition of the present invention is used to treat and relieve pain caused by joint cavity stenosis and bone wear, effectively prevent and treat traumatic or degenerative osteoarthritis, and has the advantages of good water solubility, good biocompatibility, fast onset, good repair effect, good stability, good re-dissolution stability, long effective period, easy storage, etc.