111results about How to "Keep alive" patented technology

The invention discloses a platinum-based high-entropy alloy self-supporting catalyst as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: S1, dissolving a platinum source, an iron source, a cobalt source, a molybdenum source and a manganese source in a solvent according to the molar ratio of platinum to iron to molybdenum to cobalt to manganese being 1: 1: 1: 1: 1 to obtain a precursor solution; s2, dipping the carbon felt in a polyvinyl alcohol solution, and drying to obtain a substrate; and S3, dipping the substrate in the precursor solution, drying, and carrying out Joule heat flash evaporation to obtain the catalyst. According to the invention, five metals are added according to an equal molar ratio, the catalytic efficiency of the water electrolysis catalyst is improved by utilizing a high-entropy effect, the production cost of the catalyst is reduced, meanwhile, the long-time stability of the catalyst is improved by adding a self-supporting material, and an efficient and stable water electrolysis process in an acidic electrolysis environment is realized.

The invention relates to a long-horned beetle natural enemy injection device and a using method thereof, and belongs to the technical field of long-horned beetle control, the long-horned beetle natural enemy injection device comprises a traction rod, a natural enemy storage pipe, a ventilation cover and filling glue, the ventilation cover detachably covers the open end of the natural enemy storage pipe, and the traction rod can movably penetrate through the connecting end of the natural enemy storage pipe; the traction rod is used for being inserted into a trunk boring hole and reserving a communication channel, the filling glue is arranged between the connecting end of the natural enemy storage pipe and the periphery of the trunk boring hole, and the filling glue is used for seamlessly sealing and bonding the traction rod, the connecting end of the natural enemy storage pipe and the periphery of the trunk boring hole. The long-horned beetle worm hole is positioned through the traction rod, a communication channel of the natural enemy and the worm hole is reserved, seamless sealing bonding of filling glue is matched, the natural enemy storage pipe and the worm hole are communicated to form a closed parasitic space, the search range of the natural enemy is greatly reduced, the natural enemy is forced to make contact with long-horned beetles in the worm hole, and therefore the parasitic efficiency and the prevention and control speed of the natural enemy are improved. The green prevention and control requirements of forest and fruit industries are met.

The utility model discloses a multifunctional cell collector, including sample protection pipe and setting operation head at sample protection pipe top, the operation head bottom end center place is fixed with the collection rod, the collection rod perpendicular plug -in at sample protection pipe center place inside, and the length of collection rod is less than the length of sample protection pipe, the collection rod bottom end outside is fixed with cell collection swab head, through adding detachable, reusable cold storage protection device outside sample protection pipe, when not using, the device is frozen in the freezer, and the inside silica sol is in frozen state, after cell collection, collection rod is inserted to sample protection pipe, and the frozen cold storage protection device is sleeved outside sample protection pipe, and low temperature is provided continuously by silica sol, slows down cell metabolism, prevents active reduction or metamorphism, guarantees sample original state and integrity, improves quality, lays the foundation for detection analysis, and its characteristics reduce cost, reduce waste.

The utility model discloses a kind of crab transport live box, comprising: storage box, the top of storage box is provided with lid, the bottom of lid is provided with the component of being put, the component of being put is used to cooperate storage box and form the storage of live crab;Two support frames, two support frames are respectively fixedly connected in the two sides of the bottom of lid, the both ends of support frame inside are rotatably connected with locking rod, the both ends of support frame and the two sides of storage box are provided with lock assembly, lock assembly is used to cooperate locking rod and form the positioning of lid, the component of being put includes: vertical plate, vertical plate is fixedly connected in the middle of the bottom of lid, the both sides of vertical plate are fixedly connected with multiple support plates, linear sliding slot is set in the middle of each support plate, the utility model relates to crab transport technical field;The utility model cooperates with the structure of the component of being put, can reasonably plan the storage space inside storage box before live crab storage, avoid live crab stacking, effectively guarantee the activity of bottom layer live crab.

The present application relates to a kind of composite preparation methods for metal-based ceramic composite material, as follows: one, ceramic preform production: ceramic preform mould is made;After pretreatment, ceramic particles, binder, mixed powder are mixed, filled into mould, twice solidification treatment, and ceramic preform is prepared;Two, metal-based ceramic composite material composite preparation: ceramic preform is fixed in cavity, and metal sheet is placed in the both sides of ceramic preform or between two ceramic preforms;Temperature sensor probe is inserted into cavity;After closing, it is placed in electromagnetic induction coil, and heating is carried out;When metal sheet reaches set temperature, keep warm, when ceramic preform reaches required temperature, electromagnetic induction heating system is closed;Pouring metal liquid, cooling and solidification demoulding;Three, post-processing: quenching and tempering treatment are carried out.The present application solves the problem that ceramic preform and metal liquid temperature difference is too large during metal liquid casting, resulting in poor composite effect, low product yield and unsatisfactory use effect.

The utility model provides a kind of wastewater treatment system of reinforced AOA-MBBR process stable operation, including secondary sedimentation tank, the periphery of secondary sedimentation tank is sequentially provided with anaerobic tank, first MBBR aerobic tank, second MBBR aerobic tank, first anoxic tank, second anoxic tank, filter tank;First and second MBBR aerobic tank are equipped with several combined suspended fillers, the outlet of two MBBR aerobic tanks is installed with cylindrical screen, and float ball liquid level meter, aerator are installed in the pool, online dissolved oxygen instrument and ammonia nitrogen on-line monitor are installed in second MBBR aerobic tank, float ball liquid level meter, online dissolved oxygen instrument and ammonia nitrogen on-line monitor are respectively covered with a protective cover outside.AOA-MBBR process is formed by coupling MBBR process and AOA process, wastewater is treated by anaerobic, aerobic, anoxic alternation state, improves total nitrogen and total phosphorus removal rate biological treatment, maximally utilizes raw water organic matter and internal carbon source to achieve the purpose of strengthening biological denitrification and phosphorus removal.

The invention relates to the technical field of traditional Chinese medicine preparations, and discloses a pear syrup-containing medicinal and edible wall-broken paste for treating heart-spleen deficiency, which is prepared from the following raw materials in parts by mass: 24 to 30 parts of compound medicine, 8 to 12 parts of lily, 100 to 120 parts of pear syrup, 12 to 18 parts of Chinese yam, 6 to 8 parts of semen euryales and 6 to 8 parts of semen coicis. Potential risks of non-edible raw materials are avoided, the pear syrup conforming to the national standard achieves dual effects of nourishing yin, moistening dryness and improving the taste, the industrial pain point that powder and a syrup body of a traditional syrup formula are not uniformly mixed is solved, and uniform distribution of components is ensured. A circulating cooling water and nitrogen double-control system is adopted in the whole process, the crushing temperature is strictly controlled to be 50 DEG C or below, and volatile effective components are reserved to the maximum extent.

The utility model relates to the technical field of beauty or medicine, in particular to a leading-in assembly which comprises a liquid storage bottle, a leading-in module and a secondary ramming head which are sequentially connected, solvent liquid is stored in the liquid storage bottle, the leading-in module comprises a functional module, and the secondary ramming head comprises a first shell and a second shell. A containing space is defined by the first shell and the second shell, freeze-drying particles or instant particles are placed in the containing space, the freeze-drying particles or the instant particles can be prepared in a freeze-drying mode and the like, the two ends of the containing space are open, and solvent liquid in the liquid storage bottle flows in from one end of the containing space after passing through the leading-in module. And after being contacted and mixed with the freeze-dried particles or the instant particles, the particles flow out from the other end of the accommodating space. According to the lead-in assembly provided by the utility model, the freeze-dried particles or the instant particles are arranged in the secondary blasting head, the solvent liquid in the liquid storage bottle gradually flows out to contact and dissolve the freeze-dried particles or the instant particles, and the mixed solution is applied to the periphery of eyes or other skin for use, so that the use is convenient, and the lead-in effect is better.

The utility model relates to the technical field of cosmetic packaging, in particular to a serum protein active water film vacuum fresh-keeping glass bottle packaging device. The device comprises a storage assembly and a pumping assembly, the pumping assembly is connected with the storage assembly and extracts objects stored in the storage assembly outwards, the pumping assembly is externally connected with a smearing assembly, sealing assemblies are installed on the storage assembly and the smearing assembly, and the sealing assemblies control opening and closing installation. The storage assembly is designed to be in vacuum sealing, contact between oxygen in air and a serum protein active water film is remarkably reduced, the oxidation risk is reduced, the shelf life of the product is prolonged, the pumping assembly can accurately control the dosage extracted each time, waste is avoided, meanwhile, it is ensured that the dosage used each time is consistent, and the service life of the product is prolonged. The pumping mechanism reduces the opportunity that fingers of a user make direct contact with the product, pollution risks are reduced, product sanitation is guaranteed, the external smearing assembly is designed to be suitable for direct use, intermediate operation steps are reduced, and the user can smear the product easily.

This utility model discloses a staged purification device for electrolytic hydrogen production, including a purification tank. The purification tank contains a first cylinder and a second cylinder. Several dehydration units are arranged sequentially from bottom to top within the internal region of the first cylinder. A catalytic deoxygenation unit is arranged between two adjacent dehydration units in the region between the first and second cylinders. A heating device is arranged in the region between the second cylinder and the purification tank. An air inlet is located at the bottom of the purification tank. Several first connecting ports and several second connecting ports are provided on the wall of the first cylinder. The first connecting ports connect the catalytic deoxygenation unit to the dehydration unit below it, and the second connecting ports connect the catalytic deoxygenation unit to the dehydration unit above it. A dual-outlet air pipe is located at the top of the purification tank. This utility model can perform multi-stage continuous deoxygenation and dehydration treatment on hydrogen, effectively removing oxygen and water vapor mixed in with the hydrogen, thereby ensuring the purity of the final output hydrogen.

The invention provides a device and a method for reducing the COD (Chemical Oxygen Demand) content of wastewater of an epoxypropane device. The treatment method comprises the following steps: carrying out negative pressure cyclone separation on flashed saponification wastewater to obtain a first gas phase and a first liquid phase; condensing the first gas phase to obtain a second gas phase and a second liquid phase; carrying out gas-liquid separation on the second gas phase to obtain an oil phase and a third gas phase; and mixing the second liquid phase and the oil phase, standing and separating to obtain dichloro isopropyl ether and a water phase. The COD (Chemical Oxygen Demand) content and the dichloro isopropyl ether content of the treated saponified wastewater are reduced.

The invention relates to the technical field of catalysts, in particular to a catalyst, a preparation method thereof and a preparation method of hexamethylenediamine. The catalyst provided by the invention comprises a carrier, an active component and an auxiliary agent, the active component comprises Ni; the auxiliary agent comprises Fe and Cr. According to the catalyst disclosed by the invention, the bimetallic auxiliaries Fe and Cr are introduced, so that the content of zero-valent Ni is effectively increased, the hydrogenation activity is promoted, and the reaction process is accelerated; the catalyst is used for preparing hexamethylenediamine through adiponitrile hydrogenation, and the conversion rate of adiponitrile and the selectivity of hexamethylenediamine under mild conditions are improved.

This invention discloses a carbon-coated nano-zero-valent iron composite material, its preparation method, and its application. The preparation method includes the following steps: mixing lignin and tetrahydrofuran to obtain liquid B; adding an aqueous solution of nano-ferric oxide to liquid B to obtain liquid A; adding ZnCl2 to liquid A and stirring evenly at room temperature; heating at 80-90°C for 8-9 hours to obtain a dried composite; grinding the composite into powder; heating to 300°C and maintaining the temperature for 2-3 hours under nitrogen or inert gas conditions; cooling to room temperature to obtain a composite precursor; grinding the composite precursor into powder; calcining at 800-900°C for 2-3 hours under nitrogen or inert gas conditions to obtain the carbon-coated nano-zero-valent iron composite material. The carbon-coated nano-zero-valent iron composite material of this invention has a core-shell structure, inhibiting the aggregation of nano-zero-valent iron, and achieving antioxidant properties while ensuring the activity of nano-zero-valent iron, exhibiting efficient removal of 2,4-dichlorophenol.

The invention discloses a silicon negative electrode active material which sequentially comprises a silicon-based material inner core, a flexible solid electrolyte or gel electrolyte middle layer and a carbon-coated outer layer from inside to outside, the flexible solid electrolyte or gel electrolyte middle layer comprises a conductive agent, and the conductive agent comprises a carbon nanotube. According to the silicon negative electrode active material, the surface of the silicon-based material is coated with the flexible solid-state or gel-state electrolyte, so that the volume change of the negative electrode active material in the charging and discharging process is effectively relieved, the electrolyte is isolated, the stability of the negative electrode active material is improved, and the negative electrode active material has relatively high reversible specific capacity and relatively high specific surface area; and excellent long cycle performance is shown.

The invention discloses a preparation method and application of a prostate cancer tissue single-cell suspension. The preparation method of the prostate cancer tissue single-cell suspension comprises the following steps: S1, tissue pretreatment: putting a prostate cancer tissue sample into a low-temperature pretreatment buffer solution, and cutting the prostate cancer tissue sample into tissue fragments; s2, circular enzymolysis: mixing the tissue fragments with a composite enzymatic hydrolysate, and performing digestion for multiple rounds under an oscillation condition; after each round of digestion, collecting supernate into a stop solution containing serum, repeatedly digesting the remaining tissues for multiple times, and combining the supernate to obtain a cell crude suspension; wherein the composite enzymatic hydrolysate contains collagenase, protease, nuclease, an androgen receptor stimulant and / or a ROCK inhibitor; and S3, sequentially carrying out separation and purification on the cell crude suspension through filtration and density gradient centrifugation to obtain the prostate cancer tissue single-cell suspension.

This application discloses a trough fermentation system for lignite fermentation, including a fermentation trough and a heating device for heating the fermentation trough. A floor heating coil is installed at the bottom of the fermentation trough. The heating device supplies heat to the fermentation trough through the floor heating coil, providing different amounts of heat to the fermentation trough in the early, middle, and late stages of fermentation, respectively, so that the fermentation trough is in the first, second, and third stages. The gradient temperature control of this application can accurately meet the temperature requirements of different stages in the fermentation process, significantly improving fermentation efficiency, accelerating the fermentation process, significantly shortening the fermentation cycle, and reducing greenhouse gas emissions, thus offering environmental advantages.

The application discloses a phosphorus-carrying catalyst regeneration waste liquid recycling treatment method and device, and aims to solve the technical problem of how to better control the acidity of the regeneration liquid to maintain the service life of the phosphorus-carrying catalyst, realize the recycling of the regeneration liquid and the concentration reduction of the phosphorus resource, and reduce the treatment difficulty of the regeneration waste liquid. The method comprises the following steps: introducing the phosphorus-carrying catalyst regeneration waste liquid into an adsorption device filled with a regeneration waste liquid phosphorus removal adsorbent, separating the phosphorus component in the phosphorus-carrying catalyst regeneration waste liquid, collecting the effluent as a phosphorus-lean regeneration liquid, recycling the phosphorus-lean regeneration liquid for the regeneration of the phosphorus-carrying catalyst, and mainly using the phosphate as the phosphorus component; when the regeneration waste liquid phosphorus removal adsorbent is saturated, hot water is used as a desorption medium to replace the liquid in the adsorption device, the volume of the desorption medium is controlled to be less than the volume of the phosphorus-carrying catalyst regeneration waste liquid that can be contained in the adsorption device, and the regeneration waste liquid phosphorus removal adsorbent is eluted.

The invention discloses an intestinal barrier repairing agent based on glycyrrhizic acid derivatives and a preparation method thereof, and relates to the field of pharmaceutical preparations, the intestinal barrier repairing agent comprises a repairing unit, a regulating unit and a delivery system for controlled release; the repairing unit comprises 18 beta-glycyrrhetinic acid and glycyrrhizol; the regulating unit comprises probiotics and prebiotics; according to the intestinal barrier repairing agent based on the glycyrrhizic acid derivative and the preparation method of the intestinal barrier repairing agent, through sequential release design of firstly adjusting a microenvironment and then executing repairing, the bottlenecks of disordered component release and insufficient synergy in the prior art are overcome; the colon programmed release logic of probiotic pilot colonization and subsequent repair of licorice active ingredients is established for the first time, and the physiological healing rule of the intestinal barrier is better met; by adopting a physically mixed double-layer heterogeneous pellet structure, not only is the activity of probiotics ensured, but also the efficient delivery of insoluble drugs is realized, and the process feasibility is high.

The invention discloses a preparation method of uterine blood mesenchymal stem cells, and relates to the technical field of uterine blood mesenchymal stem cell preparation, and the preparation method comprises the following steps: filtering and diluting a uterine blood sample, adding the diluted uterine blood sample into a sample density separation medium, centrifuging, collecting an upper layer and a middle layer, repeatedly centrifuging, and taking cell precipitate to obtain primary cells of the uterine blood mesenchymal stem cells; resuspending, culturing until the fusion degree of the cells reaches 70-90%, digesting by using a recombinant trypsin solution, collecting a cell suspension, centrifuging, resuspending, inoculating and culturing until the fusion degree reaches 70-90%, digesting by using a recombinant trypsin solution, centrifuging, and resuspending; centrifuging for two times, taking cell precipitate, and resuspending by using a cell freezing medium to obtain the uterine blood mesenchymal stem cells. According to the method, after the uterine blood sample is filtered, the centrifugation step is omitted, and the uterine blood sample is directly added to the upper layer of the sample density separation liquid for centrifugal extraction, so that the normal living cell proportion of primary cells and the adherence rate after inoculation are obviously improved, the production cycle is obviously shortened, and the yield of the primary cells is improved.

The application discloses application of a microbial composition in industrial hazardous waste treatment and belongs to the technical field of industrial hazardous waste treatment and comprises the following steps: S1, collecting industrial hazardous waste, obtaining hazardous waste materials after pretreatment of the industrial hazardous waste, and filling the hazardous waste materials in a fermentation tank; S2, adding a growth medium in a bioreactor, connecting domesticated bacterial liquid to the bioreactor for expansion culture, and obtaining fermentation materials of compound acidophilic bacteria; S3, adding a biosurfactant to the fermentation materials of the compound acidophilic bacteria, uniformly stirring, and obtaining cell membrane surface hydrophobic modified compound acidophilic bacteria; and S4, then adding an acidic pH buffer solution to obtain a to-be-treated material. The application can maintain the stability of the pH required by the acidophilic bacteria in the process of treating the industrial hazardous waste and improve the cell membrane surface hydrophobicity of the compound acidophilic bacteria.

This utility model discloses a shading device for transplanting seedlings in landscaping, comprising multiple uprights, symmetrically arranged poles on top of the uprights, and a shading net on the symmetrically arranged poles and the uprights. Each upright consists of an upper pole body and a lower pole body, with the upper pole body positioned on top of the lower pole body and its bottom end inserted into the inner side of the lower pole body. A limiting component is provided at the connection between the upper and lower pole bodies. The adjustable height of the uprights improves upon the previous method used in landscaping where the fixed height of the shading device prevented adjustment based on actual needs during seedling transplantation, thus addressing the inconvenience caused by the fixed height of the shading device. The adjustable height of the uprights allows workers to adjust the height of the shading net from the ground according to the seedling height and sunlight location, ensuring the survival of the transplanted seedlings.

The invention discloses a multi-element carbon-based microbial blended fertilizer for rice quality improvement and yield increase, and relates to the technical field of fertilizers, and the multi-element carbon-based microbial blended fertilizer comprises the following raw materials by weight: 10-20 parts of a multi-element carbon source, 40-50 parts of a compound fertilizer, and 1-1.5 parts of a vermiculite-loaded microbial agent. The vermiculite-loaded microbial agent is prepared from modified vermiculite-loaded nitrogen-fixing bacteria, phosphate-solubilizing bacteria, potassium-solubilizing bacteria and growth-promoting bacteria, so that the microbial strains can be slowly released and maintain the activity, and the activity of microbial flora can be durably promoted by combining a multi-element carbon source and a compound fertilizer; the flora activity promotes the release and absorption of multi-element carbon source nutrients, and the fertilizer efficiency of the microbial blended fertilizer is effectively prolonged, so that the rice quality improvement and yield increase are promoted.

The utility model provides an emulsifier adding device for emulsion explosive production, and belongs to the technical field of emulsion explosives. Comprising a base, an adding barrel is fixed to the base, a feeding pipe and a discharging pipe are installed at one end of the adding barrel, an air cylinder is fixed to the other end of the adding barrel, and a crankshaft of the air cylinder extends into the adding barrel and is connected with a piston; the feeding pipe and the discharging pipe extend into the base, the outer side of a port, extending into the base, of the feeding pipe is movably connected with a first membrane flap, the first membrane flap only allows a medium to be output from the port of the feeding pipe, the inner side of a port, extending into the base, of the discharging pipe is movably connected with a second membrane flap, and the second membrane flap only allows the medium to be output from the port of the discharging pipe. And the second membrane flap only allows the medium to be input into the port of the discharge pipe. According to the utility model, the emulsifier can be quantitatively added, the molecular chain of the emulsifier can be prevented from being damaged, the activity of the emulsifier is ensured, and the quality of the final emulsion matrix is further ensured.

The application discloses a kind of for sweat glucose concentration monitoring method, it is related to sweat monitoring field, comprising the following steps: step 1, enzyme-fixed chain conjugate synthesis: glucose dehydrogenase is reacted with bilirubin oxidase respectively with bifunctional crosslinking agent and is purified, obtain enzyme-crosslinking agent intermediate;It is clicked with azide modified DNA fixed chain chemistry reaction again, and after purification, obtain GDH-fixed chain and BOx-fixed chain conjugate;Step 2, preparation of circular DNA template: after annealing hybridization of phosphorylated template chain and primer chain, it is connected into ring by T4 DNA ligase;Step 3, rolling circle amplification self-assembly package enzyme DNA hydrogel;The present application uses super-flexible DNA hydrogel as flexible electrode material, realizes the efficient fixation and continuous stable catalysis of GDH and BOx, and constructs flexible sweat-based EBFC self-powered sensor as flexible bioelectrode, to realize continuous non-invasive blood glucose monitoring.

The present application relates to an optimization method suitable for Agrobacterium transient infection conditions of Phalaenopsis, the explant of Phalaenopsis after Agrobacterium infection treatment is placed in the first co-culture condition for culture; the cut around, tissue edge and surface state of the explant are observed; when the cut around appears browning, and at least one of the accompanying tissue edge water spot or surface loss of luster, the host defense threshold is determined; after reaching the host defense threshold, the residual Agrobacterium liquid on the surface of the explant is removed, and the explant is transferred to the second co-culture condition for continuous culture. Realize the precise regulation of co-culture, improve the accuracy of threshold identification, and optimize the matching degree of Agrobacterium infection. Adopt hierarchical film removal, asymmetric co-culture and partition suction and other operations, inhibit the excessive proliferation of Agrobacterium, accurately remove the residual bacterial liquid, while ensuring the activity of the explant, significantly improve the infection efficiency, expression stability and method repeatability.

This invention discloses a method and its application for isolating mitochondria from mesenchymal stem cells (MSCs) to improve their yield, purity, and activity. Compared to existing methods for isolating MSCs, the method of this invention effectively improves the yield and purity of MSCs, increasing the number of mitochondria by 2.96 times. The method also better maintains the activity of MSC mitochondria, significantly increasing cytochrome C content and exhibiting superior activity in treating autoimmune hepatitis. Furthermore, the method is simple, requires minimal reagents, and has broad application prospects in the field of mitochondrial transplantation therapy.

The utility model particularly relates to a short-cut nitrification-anaerobic ammonia oxidation integrated reactor. The reactor comprises a short-cut nitrification area, a sponge iron area, an anaerobic ammonia oxidation area and an autotrophic denitrification area. According to the growth characteristics of different bacteria, environment control is performed in a targeted manner, so that the different bacteria are in respective optimal growth conditions, the activity of the bacteria is ensured, and the system is more efficient. In addition, nitrite nitrogen in the reactor is consumed while being generated, the concentration of the nitrite nitrogen in the system is low, and the problem of inhibition of high nitrite nitrogen concentration on anaerobic ammonium oxidation bacteria is solved. According to the reactor, the short-cut nitrification reaction and the anaerobic ammonia oxidation reaction are arranged in the same system, the anaerobic ammonia oxidation reaction can supplement needed alkalinity for the short-cut nitrification reaction, consumption of extra chemical agents is reduced, cost is saved, and the reactor has high practical value.

The present disclosure relates to a kind of iron-based amorphous alloy and its preparation method and the application of degrading tetracycline antibiotics, the molecular formula of iron-based amorphous alloy is FexSiyBz, wherein x, y, z respectively represent the atomic percentage of Fe, Si, B in alloy, 74≤x≤84, 6≤y≤16, 6≤z≤16, and x+y+z=100;Preparation method includes: S1, raw material is proportioned in smelting furnace under inert atmosphere and is smelted to prepare iron-based amorphous alloy;S2, the iron-based amorphous alloy prepared in step S1 is prepared into iron-based amorphous alloy strip by single-roll casting method;The application of degrading tetracycline antibiotics is that the iron-based amorphous alloy is applied to the treatment of wastewater containing tetracycline antibiotics, for degrading tetracycline antibiotics;The present application is more difficult to occur passivation in degradation reaction, and it is convenient to recycle.

The invention relates to the technical field of hepatoma cell collection, in particular to a hepatoma cell collector which comprises a tray and a sealing cover meshed with the tray in a matched mode, a plurality of sets of collecting pipes are arranged on the upper side of the tray, and the collecting pipes penetrate through a plurality of sets of clamping grooves formed in the top face of the tray. A suction head used in cooperation with the collection pipe is arranged on the lower side of the collection pipe, a piston rod is arranged in the collection pipe, and a refrigeration part used for keeping the low temperature of the collection pipe is arranged on the outer side of the collection pipe; and the two groups of sealing assemblies are arranged in the collecting pipe and are used for keeping the interior of the collecting pipe sealed. Through the sealing assembly, after hepatoma cells are collected into the collection tube, the interior of the collection tube is sealed through fitting of two semicircular sealing blocks under the action of a first elastic piece, so that external infection can be avoided during storage and separation after collection, and meanwhile, only one collection tube is used in the process; and cross infection caused by conveying of a plurality of pipe fittings is avoided.

The invention relates to the technical field of health-care products, and aims to provide a lipid-lowering and weight-losing composition which comprises the following components in parts by mass: 10-15 parts of chitosan, 20-35 parts of a tea bean extract, 5-10 parts of a pawpaw extract, 2-8 parts of a Chinese wolfberry extract, 2-10 parts of an immature bitter orange extract, 5-10 parts of a nomame senna extract, 2-6 parts of composite biomass and 5-10 parts of dietary fibers. By reasonably selecting various components with different fat-reducing and weight-losing mechanisms, controlling the dosage of the components and scientifically matching the components, the obtained composition has the advantages of good effect and quick response, and does not generate dependence.