1784results about How to "Solve pollution" patented technology

The invention discloses a method of preparing aluminum oxide-silicon carbide compound porous ceramic by aluminum-silicon industrial waste residues. The primary raw materials comprise industrial waste residues, carbon powder, a pore forming substance and an adhesive. The aluminum oxide-silicon carbide compound porous ceramic is prepared by the following steps of mixing, drying, forming and sintering to obtain a final product. Treatment and high additional value utilization of the industrial waste residues are achieved. The prepared porous ceramic is remarkable in performance, and can be applied to the fields of filtration, sound isolation, heat isolation, fire fighting and the like. The method is simple in process flow and convenient for industrialized promotion; and the cost is good to control and the method has extreme economical value.

The invention relates to the technical field of supply chain management, in particular to a block chain-based culture product tracing method and system, and the method comprises the following steps: collecting the type, producing area and growth cycle data of culture products, distributing an identifier for each data item, coding the data and the associated identifiers in an upload format, and storing the data and the associated identifiers in a database; and uploading the data to a block chain network through an encryption channel, and generating a coded data record. According to the method, the timestamps and the data records are bound, each record is processed by using the hash function, and the security of each supply chain node is verified, so that not only is the integrity of data processing improved, but also an effective verification means is provided for consumers, and the security of the consumers is improved by decrypting and verifying the encrypted data. The security and privacy protection of data in storage and transmission are ensured, the production and circulation process of products is tracked through a block chain query function, the food security is improved, the supervision compliance is enhanced, and a powerful tool is provided for solving fraud and pollution problems in a supply chain.

The invention discloses a phase change energy storage waterborne polyurethane nanofiber membrane and a preparation method thereof. Lignin-based phase change microcapsules are prepared by combining ultraviolet crosslinking with lignin shell packaging, and then the nanofiber membrane containing the phase change microcapsules is prepared through an electrostatic spinning technology. And finally, constructing the waterborne polyurethane phase change fiber membrane with asymmetric wettability through a low-temperature plasma technology. According to the invention, lignin is self-assembled to form nanoparticles, and ultraviolet light induces free radical polymerization to form a polymer film, so that the packaging capability of the phase change material is improved. The phase change microcapsule prepared by the method is high in packaging efficiency and excellent in phase change performance, the preparation process is green and environment-friendly, the technological operation is simple, the temperature of the prepared phase change energy storage waterborne polyurethane nanofiber membrane conforms to the comfortable temperature range of a human body, and the phase change energy storage waterborne polyurethane nanofiber membrane has excellent temperature regulation, waterproof and moisture permeable performance and is suitable for being used in the field of water treatment. Good application prospects are realized in the field of functional textiles with functions of intelligent temperature regulation, water resistance and air permeability and the like.

The invention discloses a method for reducing saline-alkali water into modern seawater suitable for culturing various seafoods by using microorganisms, a special fish fertilizer for the method and application of a preparation method of the special fish fertilizer, and the method comprises the following specific steps: 1, pretreating the saline-alkali water: pumping saline-alkali with the salinity of 15-30% o into a culture pond, compressing, mixing and precipitating until the pH value is 7.3-7.5; 2, performing microbial culture: performing multi-stage enrichment on halobacterium violaceum and selecting dominant colonies; the method comprises the following steps: mixing underground saline-alkali water with the salinity of 10-20% o, saline-alkali water of a salt lake with the salinity of 180-200% o and high saline-alkali soil containing part of organic matters, cooking and sealing at the temperature of 200-210 DEG C, inoculating selected mixed halobacterium purple, pumping air, culturing with sunlight, and propagating for later use, wherein the pH value is 8.3-8.5; 3, reduction reaction: carrying out reduction reaction in a static water environment, when the water body is red brown or dark brown, inoculating a heterotrophic photosynthetic bacteria liquid and an autotrophic photosynthetic bacteria liquid with concentration, inoculating yeast powder, carrying out common reaction, then inoculating a special aquaculture fish fertilizer preparation, carrying out oxygenation reaction, and adjusting the pH value to 8.5-8.8; real seafood can be cultured in saline-alkali water in deserts and gobi deserts, zero pollution and zero emission can be achieved, the cost of development, implementation and popularization is low, and the cost of 10,000 cubic meters of water is only 675 yuan.

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 belongs to the field of microorganisms, and relates to a bacillus velezensis BLS-27 and a fungicide and application thereof, the bacillus velezensis BLS-27 is preserved in China General Microbiological Culture Collection Center on October 21, 2024, the preservation number is CGMCC No.32274, and the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The strain BLS-27 has an inhibition effect on wild jujube anthracnose pathogenic bacteria, can effectively inhibit various plant disease pathogenic bacteria, shows broad-spectrum antibacterial activity, is environment-friendly and can be widely applied to plant disease control.

The invention belongs to the technical field of in-vitro detection, and particularly relates to a nucleic acid combination, a kit and a method for detecting monkey pox virus based on a CRISPR (clustered regularly interspaced short palindromic repeats) technology. The detection reagent provided by the invention comprises an RPA freeze-drying reagent and a CRISPR / Cas12a detection system freeze-drying reagent, the RPA freeze-drying reagent comprises an RPA isothermal amplification reagent, Buffer A, a front primer, a rear primer and a mixed freeze-drying protective agent; the CRISPR / Cas12a detection system freeze-drying reagent comprises Cas12a, gRNA (guide ribonucleic acid), ssDNA (single-stranded deoxyribonucleic acid) reporter molecules, Buffer 2.1 and a mixed freeze-drying protective agent. The composition of the mixed freeze-drying protective agent is optimized according to the composition of a detection system and a specific detection method. The kit solves the problems of normal-temperature storage and transportation of RPA / CRISPR detection reagents of the monkey pox virus, has the characteristics of simplicity and convenience in operation, rapidness in detection, high sensitivity, suitability for on-site and large-scale screening and the like, provides an efficient and accurate solution for large-scale screening, and has a very good application prospect.

The invention provides a gamma-polyglutamic acid electrostatic compound. The gamma-polyglutamic acid electrostatic compound is formed by compounding gamma-polyglutamic acid and an antibacterial surfactant with positive charges. Compared with the prior art, the gamma-polyglutamic acid electrostatic compound provided by the invention is constructed through electrostatic interaction, not only has good cell compatibility and blood compatibility, but also has excellent broad-spectrum antibacterial property, can be uniformly coated on the surfaces of medical instruments with different base materials, shapes and sizes, is stable in combination, and can be applied to medical instruments with different shapes and sizes. The coating process has universality and is suitable for solving the problem of pollution of current medical instruments, prolonging the service life of the medical instruments and solving the problem of coating stability of the surfaces of inner and outer cavities of complex instruments.

The invention provides a precipitation method of a heavy metal solution. Cations in the heavy metal solution comprise nickel ions, cobalt ions, copper ions, zinc ions and manganese ions, and the precipitation method comprises the following steps: step S100, carrying out a manganese conversion reaction on an alkaline substance by adopting a solution containing manganese ions to obtain a converted manganese precipitate; s200, a stabilizing agent is adopted for carrying out a stabilizing reaction on the converted manganese precipitate, and a stable manganese precipitate is obtained; step S300, adding the stable manganese precipitate into a heavy metal solution for precipitation reaction to obtain precipitate slurry; step S400, continuously carrying out solid-liquid separation on the precipitate slurry to obtain a heavy metal precipitate and a manganese-containing solution; and S500, raw materials including the manganese-containing solution, an oxidizing agent and alkali liquor are subjected to an oxidation precipitation reaction, and a post-precipitation solution and a manganese product are obtained. The method solves the problems of poor sedimentation and filtration performance of a precipitation product, high moisture content of the precipitation product and low precipitation efficiency when heavy metals are precipitated in the heavy metal solution.

The invention relates to the field of photovoltaic technology, and discloses a photovoltaic solar module capable of preventing dust deposition, which comprises a mounting frame, a plurality of photovoltaic panels are arranged on the surface of the mounting frame, vertical columns are arranged at four corners of the lower part of the mounting frame, a rainwater collecting mechanism is arranged on the rear side of the mounting frame, Z-shaped fixing plates are arranged on two sides of the mounting frame, and the Z-shaped fixing plates are arranged on the mounting frame. The upper side of the Z-shaped fixing plate is provided with a first sliding rail, the length of the Z-shaped fixing plate is larger than that of the mounting frame, the upper side of the first sliding rail is provided with a first electric sliding block, a cleaning mechanism is arranged between the first electric sliding blocks, and the lower side of the mounting frame is connected with a sewage collecting assembly through a buckle assembly. The cleaning part is driven by the electric sliding block to efficiently clean the photovoltaic panel, and the power generation efficiency is guaranteed; the rainwater collecting mechanism reasonably utilizes rainwater, and the cleaning cost is reduced; the sewage collecting assembly prevents pollution of dirt to the ground, is stable in assembly connection, convenient to operate and maintain, capable of prolonging the service life and integrally efficient and practical.

The invention discloses a preparation method of a coal gangue composite grouting material, which comprises the following steps: step 1, preparing coal gangue aggregate: drying crushed coal gangue, and screening to obtain the coal gangue aggregate consisting of fine aggregate and coarse aggregate; step 2, preparing a coal gangue gel material: uniformly mixing the crushed coal gangue with graphite, performing microwave activation, adding a chemical activator, mixing, and grinding to obtain the coal gangue gel material; and mixing the coal gangue gel material and the coal gangue aggregate, adding water, and uniformly stirring. According to the method, the technological process is simple and easy to implement, efficient utilization of mine solid waste is achieved, the mining cost is greatly reduced, the grouting filling material with the excellent mechanical property is successfully obtained, and progress and development of the coal gangue based grouting technology are powerfully promoted.

The invention relates to a process for gradient extraction of seaweed protein, algin and fucoidin in brown algae. The invention relates to a process for extracting seaweed protein, algin and fucoidin in brown algae, which comprises the following steps: carrying out superfine grinding on seaweed, adding water for extraction, filtering and separating to obtain water extraction filtrate, repeatedly dissolving the water extraction filtrate in the next batch of superfine ground seaweed, and circulating for 7 times to obtain saturated or supersaturated water extraction filtrate; adjusting the pH value of the water extraction filtrate to be acidic, and filtering and separating through a micro-filtration membrane to obtain seaweed protein and first filtrate; adding calcium chloride into the first filtrate, and settling to obtain algin and supernate; filtering the supernate through a polyethersulfone composite membrane to obtain a fucoidin concentrated solution; and carrying out spray drying on the concentrated solution to obtain fucoidin powder. The method solves the problem that other functional components are wasted due to the fact that only a single component can be extracted in an existing brown algae functional component extraction method, and also solves the problems of secondary pollution, poor product quality and high cost in an existing extraction method.

The invention relates to the field of preparation of amino acid water-soluble fertilizers, and discloses a method for preparing an amino acid-containing water-soluble fertilizer by using slaughtering blood of bred livestock and poultry, which comprises the following steps: collecting the blood of the bred livestock and poultry in a slaughter house through a blood collection container, and adding an anticoagulant to obtain an anticoagulant raw material; the preparation method comprises the following steps: heating and disinfecting an anticoagulant raw material, and then adding bacillus subtilis and monopotassium phosphate to carry out enzymolysis treatment, so as to obtain a feed liquid after enzymolysis; then filtering, complexing treatment, ultraviolet sterilization treatment and sterilization are carried out in sequence; carrying out amino acid detection on the sterilized material liquid subjected to enzymolysis, and adding other nutrients to form an organic liquid fertilizer containing amino acid; and finally, carrying out preservative treatment, packaging and warehousing, and storing in a shade place to complete the preparation process of the amino acid water-soluble fertilizer. The invention solves the problems that the existing amino acid water-soluble fertilizer preparation raw materials are less, the amino acid water-soluble fertilizer preparation process is longer, and the environment is polluted due to the discharge of livestock and poultry slaughtering blood waste.

The utility model provides a battery pressurizing device and a battery production system, and belongs to the technical field of batteries. The battery pressurizing device comprises a first pressurizing part, a second pressurizing part and a driving mechanism, the first pressurizing part is provided with a first containing cavity for containing liquid and a first pressure port communicated with the first containing cavity, and the first pressure port is provided with a first elastic film for sealing the first containing cavity. The second pressurizing part is provided with a second containing cavity for containing liquid and a second pressure port communicated with the second containing cavity, and the second pressure port is provided with a second elastic film for sealing the second containing cavity. And the driving mechanism is used for switching the first pressure port and the second pressure port between a first state in which the first pressure port and the second pressure port are close to each other and a second state in which the first pressure port and the second pressure port are separated. Wherein in the first state, the first elastic film and the second elastic film are attached to the surface of the battery and apply pressure to the battery. Pollution of liquid to the battery can be reduced, and the efficiency of the all-solid-state battery isostatic pressing process is improved.

The invention relates to the technical field of camouflage target detection, in particular to a multi-modal guide feature enhanced camouflage target detection method, which comprises the following steps of: acquiring an input image through a camera and preprocessing the input image by using an inference perception filtering module; camouflage features in the preprocessed image are extracted through a backbone network and a receptive field enhancement module, the integrity of the camouflage features is further enhanced by fusing feature information such as text information, morphological features and an infrared spectrum of a camouflage target, and intermediate feature information and deep feature information are transmitted into a near decoder to obtain an initial segmentation image; the initial segmentation image, shallow layer information and multi-modal fusion information are spliced layer by layer to further enrich the edge and texture of the segmentation image, and the segmentation image obtains a prediction result through an activation function. According to the invention, the detection precision of the camouflage target is improved, the integrity of the edge texture of the target is enhanced, and convenience is provided for camouflage target detection.

The invention relates to a nickel-ruthenium composite coating plating method for a molybdenum alloy substrate, which is applied to the field of processing and manufacturing of metal-based molybdenum alloy substrates and comprises the following steps: carrying out surface pretreatment on a molybdenum sheet raw material to obtain a net molybdenum sheet; putting the pure molybdenum sheet into vacuum coating equipment, and starting the vacuum coating equipment to vacuumize to form a vacuum system; and vacuum coating equipment is started for heating, a high-temperature system is formed, the surface of the net molybdenum sheet is coated with a physical vapor deposition method, and the molybdenum sheet with nickel plated on the two faces and ruthenium plated on the single face is obtained. The method has the technical effects that a good coating film is formed on the surface of the molybdenum sheet through a vacuum coating method, the method is green and environmentally friendly, harmful substances are reduced, the adhesive force between the coating layer and the molybdenum sheet is high, the film layer is high in purity and good in quality, and the production quality of the molybdenum alloy substrate is improved. Grease, oxides, residual solvents, impurities and the like on the surface of the molybdenum sheet are cleaned through the surface pretreatment step, the surface quality and binding force of the molybdenum sheet are improved, and the connection firmness of the nickel-ruthenium composite coating on the surface of the molybdenum sheet is improved.

The invention discloses a multi-energy energy management method and a ship, the method is applied to a multi-energy power system comprising a fuel cell, a battery pack and photovoltaic power generation, an energy management optimization model based on model prediction control is established, and the energy management optimization model comprises a prediction model, rolling optimization and a reference trajectory. An energy management strategy is optimized in real time through model predictive control (MPC), conversion and distribution among different energy sources are intelligently managed according to actual energy source requirements and availability, and therefore stable supply of power output is achieved. A multi-energy complementary hybrid power platform is constructed by integrating a hydrogen fuel cell, a lithium battery and a photovoltaic power generation technology, an energy management strategy is optimized in real time through model predictive control (MPC), and efficient and stable use of energy under various navigation conditions is ensured.

The invention discloses an ultra-thin aluminum foil rolling system, and relates to the technical field of ultra-thin aluminum foil rolling, the ultra-thin aluminum foil rolling system comprises a workbench, rolling rollers are rotatably connected to the center of the interior of the workbench in an up-down symmetrical mode, tensioning rollers are arranged on the two sides of each rolling roller, the tensioning rollers are rotatably connected into the workbench, and through grooves are symmetrically formed in the two sides of the workbench; a transverse plate is fixedly connected to the upper end face of the workbench, and a lubricant uniform smearing mechanism is arranged between the workbench and the rolling roller, so that it is guaranteed that a lubricant is uniformly distributed on the whole surface of the rolling roller, and the problem that the lubricant is not uniformly distributed due to direct spraying is solved; therefore, the negative phenomena of friction resistance increase, adhesion, scratches or abrasion and the like caused by insufficient lubrication are reduced, friction and abrasion in the rolling process are reduced through uniform lubrication, the surface of the rolling roller is protected against excessive abrasion, the damage risk caused by direct contact of the aluminum foil with the rolling roller is reduced, and the service life of the aluminum foil is prolonged. The service lives of rolling rollers and aluminum foils are prolonged, and the production cost is reduced.

The invention provides a decentralized hierarchical federated learning method and system, and edge servers. The method comprises the following steps: a plurality of edge servers respectively receive gradient ciphertexts sent by different participant clients; the plurality of edge servers aggregate the received gradient ciphertext based on a secure multi-party computing protocol to obtain an aggregation model ciphertext; according to the secure multi-party computing protocol, in a non-trusted multi-user network, a plurality of edge servers respectively holding different gradient ciphertexts jointly compute aggregation model ciphertexts based on the gradient ciphertexts, and each edge server only obtains part of data in the aggregation model ciphertexts. The gradient ciphertext held by the edge server is not leaked to other edge servers; and the edge server issues the aggregation model ciphertext to the participant client. By using the scheme of the invention, the security of model aggregation can be improved.

The invention relates to the technical field of energy conservation and environmental protection, and discloses a biomass oxygen-enriched combustion optimization and pollutant intelligent control system and method.The biomass oxygen-enriched combustion optimization and pollutant intelligent control system comprises a boiler temperature and pressure prediction system, a fuel prediction regulation and control system, a primary and secondary air prediction regulation and control system, a flue gas amount prediction system, a flue gas recirculation regulation and control system and a desulfurization and denitrification intelligent control system; the fuel prediction regulation and control system comprises a fuel identification module, a fuel heat value prediction module and a fuel demand prediction module; the primary and secondary air predictive regulation and control system comprises a primary air calculation module and a secondary air calculation module; the flue gas quantity prediction system comprises an induced draft fan control module and a flue gas prediction module; the flue gas recirculation regulation and control system comprises a recirculation quantity prediction module and a supplement quantity prediction module; the desulfurization and denitrification intelligent control system comprises a pollutant prediction module, a desulfurization agent prediction module and a denitrification agent prediction module. According to the invention, dynamic optimization and accurate control of the biomass boiler under the oxygen-enriched combustion condition can be realized.

The invention belongs to the technical field of two-dimensional materials, and particularly relates to a clean and lossless two-dimensional semiconductor material transfer method. The transfer method comprises the following steps: growing a two-dimensional semiconductor material on a growth substrate, then growing an inorganic protective layer on the surface of a two-dimensional semiconductor, spin-coating an organic polymer support layer, heating and curing, then stripping the growth substrate, transferring the stripped structure to a target substrate, and removing the organic polymer support layer to obtain the two-dimensional semiconductor material. An inorganic protection layer / two-dimensional semiconductor / target substrate structure is obtained, and two-dimensional semiconductor material transfer is completed. The two-dimensional semiconductor material transfer method is simple and easy to implement, clean and lossless transfer of the two-dimensional semiconductor material is achieved, meanwhile, the transferred two-dimensional semiconductor material can be protected against influences of water and oxygen in air, and the original performance of the two-dimensional semiconductor material is reserved to the maximum extent.

The utility model provides a saline-alkali land treatment device for circulating irrigation and salt leaching, which comprises a buried pipe and a water collecting tank which are both buried in the land; the sedimentation tank is arranged on the ground, the sedimentation tank is connected with the water collecting tank through a connecting pipe assembly, and a salt-containing water outlet and an overflow port are formed in the sedimentation tank; the irrigation assembly comprises a first irrigation pipe and a second irrigation pipe, and the first irrigation pipe is connected with the salt-containing water outlet; the desalting assembly comprises a water outlet, a heating assembly and a condensing assembly, the heating assembly is communicated with the sedimentation tank through the overflow port, the water outlet is formed in the condensing assembly, the heating assembly heats, evaporates and crystallizes liquid from the sedimentation tank, and formed steam is cooled by the condensing assembly and then becomes liquid which is discharged through the water outlet. The water outlet is connected with the second irrigation pipe. The saline-alkali soil treatment device for circulating irrigation and salt leaching solves the technical problems of high cost and high difficulty in saline-alkali soil treatment in related technologies.

The utility model relates to the technical field of medical instruments, in particular to a urethral catheterization device which comprises a urethral catheter and a storage assembly, the storage assembly comprises a hook, a diversion bag and a urine receiving bag, the end, away from the diversion bag, of the urethral catheter is inserted into the bladder from the urethra to guide urine, and the drained urine is guided into the diversion bag through the urethral catheter to be stored. When the urine in the flow guide bag reaches a certain amount and needs to be poured out, the urination opening of the flow guide bag is opened, the urine is guided into the urine receiving bag, after the urine in the flow guide bag is guided out, the urination opening is closed, the urine receiving bag is taken down from the flow guide bag, and the urine is discharged and poured out through the urine receiving bag discharging opening. Urine cannot flow out when catheterization is performed or the urine receiving bag is taken down, and the problem that residual urine flows out to cause environmental pollution when the urine in the liquid storage bag is detached and poured out in an existing catheterization device is solved.

The invention relates to the field of photo interrupter packaging technology, in particular to a reflective photo interrupter packaging structure, a secondary pressing mold and a packaging method.The reflective photo interrupter packaging structure comprises an optical assembly, and the optical assembly comprises a light source and a light receiver and is used for emitting and receiving light rays; the circuit board is a split circuit board and is used for bearing the light source and the light receiver respectively; the first packaging layer covers the optical assembly and the circuit board and is made of an epoxy resin material; the second packaging layer covers the first packaging layer and is made of an epoxy resin material; a part of the circuit board penetrates out of the first packaging layer and the second packaging layer and is used for being connected with an external circuit. The packaging structure has the effect of improving the packaging stability and reliability of the reflective photo interrupter.

The invention discloses a water-retention and soil-moisture-conservation biodegradable agricultural film with a self-water-absorption structure and a preparation method of the water-retention and soil-moisture-conservation biodegradable agricultural film, and belongs to the technical field of degradable agricultural films. The agricultural film is formed by co-extruding an outer hydrophobic layer, a middle mechanical supporting layer and an inner hydrophilic layer, the outer hydrophobic layer is composed of a hydrophobic layer master batch and polyester in a mass ratio of (5-9): (1-5), and the hydrophobic layer master batch is prepared by blending and granulating polylactic acid, hydrophobic layered nanosheets and auxiliaries; the middle mechanical supporting layer is composed of a mechanical supporting layer master batch and polyester in a mass ratio of (5-9): (1-5), and the mechanical supporting layer master batch is prepared by blending and granulating polylactic acid, a bio-based filler and an auxiliary agent; the inner hydrophilic layer is composed of a hydrophilic layer master batch and polyester in a mass ratio of (5-9): (1-5), and the hydrophilic layer master batch is prepared by blending and granulating polylactic acid, super-hydrophilic nanoparticles and an auxiliary agent; the prepared agricultural film has water retention, hydrophobic and hydrophilic functions at the same time, has excellent mechanical strength and toughness, and can meet use requirements.

The invention discloses a pesticide residue scavenging agent. The feed additive is prepared from the following components in parts by weight: 90-110 parts of white hyacinth beans, 9-11 parts of papain, 90-110 parts of liquorice, 45-55 parts of folium isatidis, 25-35 parts of perilla leaves, 25-35 parts of fructus forsythiae, 25-35 parts of honeysuckle, 15-25 parts of rhizoma smilacis glabrae, 15-25 parts of ginkgo leaves, 4-6 parts of soybean protease, 9-11 parts of glutathione, 5-7 parts of amino-oligosaccharin, 9-11 parts of amylase and 7-9 parts of walnut peptide. The invention also discloses a preparation method of the pesticide residue scavenger. The method has the following outstanding effects: the method is easy to operate, low in cost, popular in price and remarkable in effect, and can reach the national safety agricultural product indexes.

The four-composite automobile sealing strip is formed by co-extrusion molding of dense glue, a framework, polystyrene foam and low-density polystyrene foam, the framework is wrapped in the dense glue to form an inverted-U-shaped inserting groove, and the low-density polystyrene foam is arranged at the top of the inverted-U-shaped inserting groove; after the automobile sealing strip is installed, the metal plate abuts against the low-density polystyrene foam, and a plurality of sealing teeth are arranged in the inverted-U-shaped inserting groove so that the automobile sealing strip can be fixed to the metal plate. The sealing effect is better than that of traditional butyl rubber sealing, the problems that the tail door leaks water easily due to the fact that the rubber injection amount of butyl rubber sealing rubber is unstable and the butyl rubber sealing rubber pollutes a vehicle body in the vehicle loading process are solved, and the peculiar smell of the sealing strip is reduced.

The invention discloses a soil micro-plastic separation and extraction device, which relates to the field of micro-plastic separation, and comprises a separation cylinder used for bearing soil containing micro-plastic and provided with a channel at the top end, a liquid supplementing system used for conveying a flotation liquid into the separation cylinder and allowing the flotation liquid in the separation cylinder to flow out from the channel, and a filter element arranged in the separation cylinder, the filtering part is used for filtering micro-plastics in the soil and is arranged at the top end of the separating cylinder; according to the separation and extraction device for the soil micro-plastics, the filter piece is arranged to be in a strip shape and covers the cross section of a channel where flotation liquid flows through, continuous filtration of the flotation liquid is achieved, and when part of the filter screen is blocked by the micro-plastics, the moving driving mechanism can rapidly move the blocked filter screen part to the space A; meanwhile, the unblocked filter screen part continuously covers the cross section of the channel for filtering, so that the cleaning or replacement problem caused by blockage of the filter screen is avoided, and the separation and extraction efficiency is remarkably improved.

The invention belongs to the technical field of plasmas, and particularly relates to a magnetic lens constraint focusing reaction ion beam source which can obtain a focusing ion beam with ion energy in normal distribution and introduce reaction gas to realize rapid removal of a damaged layer on the surface of an optical element. According to the technical scheme, the ion source comprises an anode, an outer cathode arranged above the anode and a center cathode arranged in the middle of the ion source, the anode, the outer cathode and the center cathode are special-shaped circular rings, an ion beam leading-out gap is formed between the outer cathode and the center cathode, an ionization area is arranged among the anode, the outer cathode and the center cathode, and the ionization area is arranged between the anode and the center cathode. An ionization magnetic coil is arranged on the outer side of the anode, a working gas leading-in device is arranged below the center cathode, a magnetic lens center magnetic pole is arranged above the center cathode, a reaction gas leading-out hole is formed in the middle of the magnetic lens center magnetic pole, and reaction gas is led into the magnetic lens center magnetic pole through the center cathode by a gas guide pipe. A magnetic lens coil is arranged on the periphery of the magnetic lens center magnetic pole, and a magnetic lens outer magnetic pole is arranged above the magnetic lens coil.

The invention discloses a low-shrinkage creep-resistant plastic-wood product and a preparation method thereof, and belongs to the technical field of plastic-wood composite materials. The composite material is prepared from the following raw materials in parts by weight: 10 to 18 parts of polypropylene, 22 to 35 parts of high-density polyethylene, 58 to 83 parts of eucalyptus / walnut shell / montmorillonite composite modified powder, 10 to 15 parts of hydroxyl-terminated polybutadiene and graphene / ZnO2 / CaO, 7 to 15 parts of basic magnesium sulfate whisker, 3 to 4.6 parts of gamma-glycidyl ether oxypropyl trimethoxy silane and 0.3 to 1 part of antioxidant. In this way, the plastic-wood product is high in low-temperature impact strength, good in creep resistance, small in linear thermal expansion coefficient and high in thermal deformation temperature. Specifically, the impact strength of the plastic-wood product is 6.96-7.27 KJ / m < 2 >; the tensile creep modulus is 18.8 to 21.6 Mpa; the linear thermal expansion coefficient is 2.5-3.1 * 10 <-5 > / DEG C; the thermal deformation temperature is 163.2 to 178.5 DEG C;