30results about How to "Reduce reproduction" patented technology

The invention discloses a Pickering emulsion with cinnamyl aldehyde as an oil phase and a preparation method of the Pickering emulsion. The Pickering emulsion is prepared by the following steps: carrying out a cross-linking reaction on anions released by sodium tripolyphosphate and protonated cations of chitosan to prepare chitosan nanoparticles as a water phase, and then taking cinnamyl aldehyde as an oil phase. The Pickering emulsion delivery system disclosed by the invention can effectively release cinnamyl aldehyde, shows the remarkable antibacterial property of cinnamyl aldehyde on a wound surface, promotes wound surface healing, and shows good treatment potential.

The invention relates to the technical field of pecan prevention and treatment, in particular to a bactericide composition for preventing and treating pecan root rot and application of the bactericide composition. According to the technical scheme, the bactericide composition comprises a component A, a component B and a component C in percentage by weight, the bactericide composition of the component A is suitable for treating slight or preventive root rot, the bactericide composition of the component B is suitable for treating medium-degree root rot, and the bactericide composition of the component C is suitable for treating severe or refractory root rot. According to the severity of the illness state, corresponding bactericide components are selected for root irrigation treatment. According to the bactericide composition disclosed by the invention, through specific proportioning and component selection, the survival and reproduction of pathogenic bacteria can be reduced aiming at the pathogenic bacteria of the pecan root rot, so that the occurrence and spreading of diseases are controlled.

The invention discloses a bath towel with acarus killing and antibiosis effects, and relates to the field of bath towels, the bath towel comprises a bath towel body, the two sides of the bath towel body are respectively a smooth surface and a rough surface, the rough surface is woven to form a convex unit group by adopting wave-shaped bent yarns, a storage chamber is arranged at the smooth surface in the bath towel body, and the convex unit group is arranged in the storage chamber. And a plurality of groups of through holes are formed in the smooth surface at the storage chamber. According to the bath towel, the rough surface adopts the raised unit groups woven by the wavy bent yarns, a buffer gap is formed when the bath towel body is in contact with skin in the cleaning process, the skin strain risk is reduced, and the through holes are formed in the cleaning process, so that external air can be guided into the bath towel body, the stuffiness feeling of hands is effectively relieved, and the cleaning effect is improved. The cleaning soap is placed in the storage cavity, after cleaning is completed, the bath towel body is reversely worn, cleaning foam can be generated in the back-and-forth friction process through the smooth surface and is rapidly guided into a rubbing area, and the double effects of cleaning and lubricating are integrated.

The invention provides an inspection device, and belongs to the technical field of sample inspection. The inspection device comprises an inspection box, a box cover is arranged at the top of the inspection box, an opening is formed in the top of the inspection box, a shaking-up mechanism is arranged in the inspection box and comprises a rotating shaft, a first gear and a second gear, the rotating shaft is rotationally installed at the bottom of the inner wall of the inspection box, and the first gear and the second gear are arranged on the rotating shaft. A rotary table is fixedly mounted at the top of the rotary shaft, and a storage cavity is formed in the top of the rotary table. By arranging the shaking mechanism, when a second gear rotates, a connecting rod is driven to move, a toothed plate reciprocates, a first gear alternately rotates clockwise and anticlockwise, and a storage tube is driven to alternately rotate, so that the storage tube drives a test tube to alternately rotate, and a sample in the test tube is shaken up; compared with a manual shaking mode in the prior art, the shaking device has the advantages that the efficiency is higher, and the shaking effect is better.

The invention discloses a preparation method of a traditional Chinese medicine composition for treating skin tinea, allergic dermatitis and acne, and relates to the field of pharmaceutical preparations, the extraction rate of gallic acid and ethyl gallate contained in total tannin in fructus chebulae flesh, fructus terminaliae billericae flesh and fructus chebulae immaturus is improved through an enzymolysis method, and the transfer rate of effective components of quercetin is improved through a boiling granulation technology; therefore, the effect of treating psoriasis of the composition is improved. By adopting a boiling granulation technology, the technical problems of long preparation period and high cost in the prior art are solved. The release speed of aloe in intestinal tracts is controlled by adopting a slow release technology, and the upper and lower limit content range of barbaloin is controlled to reduce the occurrence rate of adverse reactions of the composition. Meanwhile, butyl hydroxy anisd (BHA), butylated hydroxytoluene (BHT) and a citric acid system are adopted, so that the problems of PEO skeleton degradation, out-of-control drug release behavior and insufficient main drug stability of the barbaloin-PEO sustained release preparation are solved.

The invention relates to the field of feed processing, and discloses a compound premix feed for aquatic products, which comprises the following raw materials in percentage by weight: 15% of sweet wormwood, 15% of Sanhuang, 5% of ginger powder, 15% of wormwood, 15% of honeysuckle, 15% of dandelion, 5% of ferrous sulfate and 15% of vitamin B6, the weight ratio of the rhizoma coptidis to the cortex phellodendri to the radix scutellariae is 1: 1: 1. Amur corktree bark has the effects of clearing away heat and toxic materials, eliminating dampness and stopping diarrhea and can improve water quality and reduce reproduction and pollution of harmful microorganisms, honeysuckle flowers have the effects of clearing away heat and toxic materials and resisting bacteria and can directly act on fishes and shrimps and can indirectly purify water quality and maintain cleanliness and stability of water, ferrous sulfate supplements iron elements needed by the fishes and shrimps, and the fish and shrimp feed additive is free of toxic and side effects. The fish and shrimps can effectively absorb nutrient substances in water, promote synthesis of hemoglobin, improve oxygen transport capacity, help the fish and shrimps to better absorb the nutrient substances in the water, and reduce dependence and pollution on the environment.

The utility model relates to water tank technical field discloses built -in full exposure triangular section no water tank of reinforcing bar, including uniform stiffener in the four -corner of water tank body, built -in triangular frame, cleaning assembly is by mounting panel, float, counterweight, cleaning plate and linkage mechanism and is composed, utilizes water level fluctuation energy drive cleaning assembly: float is dragged by buoyancy and pulls the line and promotes mounting panel, drives cleaning plate and goes up along the inner wall of triangular frame, and the dirt is scraped and is carried by water flow and is discharged, counterweight falls back because of gravity and pulls mounting panel, and cleaning plate goes down and removes the residual water film of newly exposed wall surface, and float and counterweight form dynamic balance system, make cleaning assembly do reciprocating linear motion with every liquid level change, and cleaning plate realizes self -adaptation and sticks with the help of the volute spring and ball structure in the guide frame, and the elastic force of volute spring precompression makes cleaning plate always press tightly wall surface, and ensures effective cleaning pressure, and the design does not need external power, and can drive only relying on water body natural fluctuation.

The invention discloses a degradable medicinal plastic bottle and a preparation method thereof. The mass ratio of polylactic acid, a biodegradable elastomer, a compound plasticizer, a nucleating agent and a photosensitizer in the degradable medicinal plastic bottle is 100: (15-20): (2-4): (2-4): (1-3); the biodegradable elastomer is obtained by mixing polyhydroxybutyrate, polycaprolactone, polybutylene succinate and the like in a weight ratio; the compound plasticizer is obtained by mixing a bio-based polycarboxylic acid plasticizer, a cellulose grafted polycaprolactone derivative, modified castor oil and acetyl tributyl citrate; the nucleating agent is one of a polylactic acid stereocomplex and TMC-200; and the photosensitizer is modified titanium dioxide, which effectively solves the problem that the plastic bottle in the prior art is insufficient in physical properties, photocatalytic efficiency and antibacterial properties.

The present application relates to the field of inkjet inks, and in particular to a water-based pigment inkjet ink suitable for walls and a preparation method thereof. A water-based pigment inkjet ink suitable for walls comprises the following raw materials in parts by weight: 10-20 parts of water-based polyurethane; 0.5-3 parts of wetting agent; 0.1-1 parts of bactericide; 0.1-1 parts of pH regulator; 15-35 parts of water-based resin-free color paste; 10-30 parts of a first solvent; and 20-50 parts of deionized water. The present application has the characteristics of improving the spraying effect and color fastness of water-based pigment inkjet ink.

The invention discloses an ensiling method of sweet potato vine silage for ecological pig raising, and particularly relates to the field of ensiling, and the ensiling method comprises the following steps: airing harvested sweet potato vines, removing impurities, cutting and crushing, then uniformly mixing cellulase, lactic acid bacteria and other biological enzyme preparations with corn flour, and adding the treated sweet potato vines to obtain a first-stage product; adding rice bran and wheat bran to adjust moisture, uniformly stirring the product to form a second-stage product, and bundling and coating the silage by using a bundling machine and a coating machine; then, according to the peroxide concentration, lactic acid bacteria activity and moisture content of the first-stage product and the second-stage product, oxidation index evaluation is carried out, first-class and second-class oxidation indexes are generated, then oxidation comprehensive indexes are calculated, and the silage environment, the microbial dosage and the antioxidant proportion are dynamically adjusted according to the indexes so as to optimize the silage effect.

The invention relates to an antibacterial PE composite board and a preparation method thereof, and belongs to the technical field of high polymer materials. The antibacterial PE composite board is prepared from the following components in parts by weight: 100 parts of HDPE (High-Density Polyethylene) resin, 14 to 18 parts of LLDPE (Linear Low Density Polyethylene) resin, 7.5 to 11 parts of antibacterial modified cellulose, 1.7 to 2.2 parts of a lubricant and 0.15 to 0.2 part of an antioxidant, the antibacterial modified cellulose takes microfibrillated cellulose as a matrix, formyl groups are formed on cellulose molecules through sodium periodate oxidation to obtain hydroformylated fibers, then aliphatic chain monoamine and the introduced formyl groups are subjected to amine-aldehyde condensation, alkyl aliphatic chains are introduced to side chains of cellulose macromolecules for modification to obtain alkylated fibers, and finally, the antibacterial modified cellulose is prepared through the preparation method. Performing quaternization treatment by using iodoethane; the antibacterial modified cellulose reduces the generation of cracks of the board under the action of external force deformation, inhibits the reproduction of bacteria invading the cracks, has a good antibacterial effect, and enables the board to maintain stable mechanical properties.

This invention provides a rumen methane inhibitor and its application, belonging to the field of ruminant farming. The active ingredients of the rumen methane inhibitor of this invention include: *Lactobacillus reuteri* inoculum, *Lactobacillus gasseri* inoculum, *Lactobacillus casei* inoculum, amylase, phytase, xylanase, cellulase, and β-glucanase. The rumen methane inhibitor can effectively regulate the intestinal microbiota of dairy cows, promote the decomposition of fibrous material in the rumen, optimize the rumen fermentation environment, thereby controlling rumen function, reducing methane production, and improving the productivity of ruminants. The rumen methane inhibitor is safe and environmentally friendly, which is conducive to its application in ruminant farming, agriculture, and other fields, and has good practicality.

The invention discloses a calf feed additive and a preparation method thereof. The feed additive is prepared from the following components: 100 parts of Chinese herbal medicine fermentation liquor, 10-30 parts of modified hydrogel, 8-16 parts of alfalfa meal, 5-10 parts of calcium hydrogen phosphate, 5-10 parts of whey powder, 1-3 parts of choline chloride, 0.5-2 parts of table salt and 0.1-1 part of baking soda. The Chinese herbal medicine fermentation liquor is prepared by fermenting a Chinese herbal medicine extracting solution with a complex microbial inoculant, and the modified hydrogel is prepared by crosslinking lipoic acid modified bentonite and fumaric acid modified sodium alginate under photo-initiation; the prepared feed additive is good in palatability, the feed intake of the calves can be remarkably increased, meanwhile, the gastrointestinal digestion function of the calves is enhanced, the digestion, conversion and utilization rate of the feed is increased, and rapid growth of the calves is promoted.

The invention relates to preparation of indoor potting solid water, and belongs to the field of solid water preparation.The preparation method comprises the steps that nitrogen is introduced into a four-opening flask for 10 min, air is removed, wheat bran and wheat B starch wastewater are added, heating and stirring are conducted to be uniform, sodium alginate and gellan gum are added, and mixing is conducted to prepare a solution A; the preparation method comprises the following steps: adding a 25% NaOH solution into acrylic acid under an ice-water bath condition for neutralization, cooling a neutralized solution to room temperature, adding 2-acrylamide-2-methylpropanesulfonic acid, bentonite, methylene bisacrylamide and potassium persulfate, and fully and uniformly stirring to obtain a solution B; slowly adding the solution B into the solution A, heating, stirring, carrying out polymerization reaction, filtering after the reaction is ended, and washing with absolute ethyl alcohol and distilled water, so as to obtain the special solid water for indoor potting. The indoor potting solid water provided by the invention can provide convenience for workers to maintain potting plants, can improve soil permeability and water absorption and retention capability, has a long service cycle, is prepared from natural degradable materials, and has low cost.

The invention relates to a weaned Hu sheep lamb seed selection method based on machine learning. The method comprises the following steps: collecting, sorting and storing long-term production practice data of Hu sheep; preprocessing the collected data, and screening out the most effective features; and selecting a plurality of machine learning models to train and comprehensively analyze the data to obtain a model with an optimal prediction effect. The prediction result is evaluated through the model, a threshold value is set, in combination with production requirements, a seed selection decision is obtained, the selected breeding sheep is marked, hybridized and tracked for a long time, the production and reproduction conditions of the breeding sheep are recorded, and real-time improvement and optimization of the model are ensured. According to the method, the growth performance of the lambs can be accurately predicted, and the selection decision is optimized according to the prediction result.

The invention provides GABA-rich rice and a rice GABA enrichment device and enrichment method based on fed-batch water heat-moisture treatment. The device comprises a horizontal germination tank, a fed-batch water heat-moisture treatment device, an in-tank humidity sensor, an in-tank temperature sensor and a control unit, gABA enrichment is carried out on the rice through the fed-batch water heat-moisture treatment device, in the enrichment process, the sprouting tank body continuously rotates and drives the rice inside to move, the rice uniformly receives temperature, humidity and oxygen, the enriched rice is dried through a low-temperature drying technology, the GABA enrichment device integrates wheat wetting, enrichment and drying functions, and the GABA enrichment device has the advantages that the wheat wetting, enrichment and drying functions are integrated; the content of GABA in brown rice enriched by the device is greatly increased, meanwhile, the content of GABA in endosperm is also greatly increased, the fissure rate of the enriched rice is low, the processing quality of the rice is greatly improved, and the eating quality of cooked rice prepared from the rice is improved.

The invention discloses a device and a method for preparing an ecological bacteriostatic high-stability PES (Polyether Sulfonate) ultrafiltration membrane. The device is provided with a plurality of raw material storage tanks, raw materials are conveyed to a stirring tank through a discharging pipe with an electric valve and a screw pump to be mixed into a membrane casting solution, and then the membrane casting solution is conveyed to a membrane scraping forming machine through a peristaltic pump to form an ultrafiltration membrane. The formed ultrafiltration membrane is sequentially cooled by the spraying pipe and dried by the air knife mechanism, and the air knife mechanism is matched with mechanical linkage structures such as a turbofan to enable the clamping rods to swing, so that water on the surface of the membrane is quickly thrown away to improve the efficiency. And finally, winding is conducted through the winding structure. The preparation method comprises the steps of raw material preparation, conveying and mixing, film scraping and forming, post-treatment, rolling and the like. Through the unique device and process, the prepared PES ultrafiltration membrane has the ecological antibacterial performance and high stability, the preparation process is accurate and controllable, the production efficiency is high, the requirements of multiple fields for high-quality ultrafiltration membranes can be met, and the PES ultrafiltration membrane has good application prospects.

The invention discloses a degradable medicinal plastic bottle and a preparation method thereof. In the degradable medicinal plastic bottle, the mass ratio of polylactic acid to a biodegradable elastomer to a compound plasticizer to a nucleating agent to a photosensitizer is 100: (15-20): (2-4): (2-4): (1-3); the biodegradable elastomer is obtained by mixing polyhydroxybutyrate, polycaprolactone and poly (butylene succinate) according to the weight ratio of the polyhydroxybutyrate to the polycaprolactone to the poly (butylene succinate); the compound plasticizer is obtained by mixing a bio-based polycarboxylic acid plasticizer, a cellulose grafted polycaprolactone derivative, modified castor oil and acetyl tributyl citrate; the nucleating agent is one of a polylactic acid steric compound and TMC-200; the photosensitizer is modified titanium dioxide, and the problems that in the prior art, a plastic bottle is insufficient in physical performance, photocatalytic efficiency and antibacterial performance are effectively solved.

The embodiment of the invention discloses a sterilization control method and device for refrigeration equipment and a storage medium, and belongs to the technical field of smart home. Comprising the steps of detecting the damage degree of food materials in the refrigeration equipment; and controlling the sterilization module to sterilize the food materials by adopting the sterilization intensity corresponding to the damage degree. According to the embodiment of the invention, by detecting the damage degree of the food material, the fresh state of the food material and the possible microbial contamination risk can be identified, so that the sterilization intensity of the sterilization module is automatically adjusted to adapt to different storage requirements of the food material, the sterilization effect is improved, and the energy consumption is reduced; the original flavor and nutritional value of the food materials can be kept, and the fresh-keeping period can be prolonged.

The utility model provides a refrigerator which comprises a refrigerator body, a refrigerator door, a refrigerator door, a refrigerator door and a refrigerator door, wherein a fresh-keeping chamber is defined in the refrigerator body and used for storing poultry eggs to be kept fresh; and the electrolysis deoxygenization device communicates with the fresh-keeping chamber and is configured to absorb oxygen in the fresh-keeping chamber and release oxygen to the outer space of the fresh-keeping chamber, so that the oxygen content in the fresh-keeping chamber is reduced to 7%-11%. The poultry egg fresh-keeping device has the advantages that the fresh-keeping quality of poultry eggs can be improved, and the fresh-keeping time of the poultry eggs can be prolonged.

The present invention belongs to the field of microbial technology, and specifically relates to a strain of Propionibacterium acnes and its application. Specifically, the present invention isolates a strain of Propionibacterium acnes (Propionibacterium acnes) with good anti-inflammatory and antioxidant properties from healthy scalp. Propionibacterium acnes ) CCSMS0630, its fermentation supernatant has a good effect on promoting the growth of Malassezia globosa, and can inhibit the growth of Staphylococcus capitis and Malassezia restricta. It regulates the balance between bacteria and fungi and the function of scalp flora, thereby improving dandruff and benefiting scalp health.

The present invention discloses a fresh water tank anti-pollution device for a deck transport ship, which relates to the field of fresh water tank anti-pollution, and comprises a carrying frame, the upper surface of the carrying frame is slidably connected with a movable rod, the top of the movable rod is fixedly installed with a driving assembly, the output end of the driving assembly is rotatably connected with a cleaning assembly, and the input end of the driving assembly is fixedly connected with a reduction motor. The present invention drives the cleaning assembly through the driving assembly, so that the cleaning assembly moves back and forth in the fresh water tank, captures microorganisms in the fresh water into a first plate-shaped filter membrane and a second plate-shaped filter membrane, and filters the microorganisms in the fresh water by staggered movement. The staggered movement route can avoid the filtering effect from being affected by the water flow direction, and plays a role in improving the filtering effect. Filtering out the microorganisms can avoid the fresh water tank from being contaminated by the microorganisms, and solve the problem of rapid reproduction of bacteria, fungi, algae and other organisms in the cabin.

The invention relates to the technical field of microorganisms, in particular to staphylococcus epidermidis CCSMS1601 as well as a culture method and application of the staphylococcus epidermidis CCSMS1601. The staphylococcus epidermidis CCSMS1601 provided by the invention is preserved in the China General Microbiological Culture Collection Center on June 5, 2024, and the preservation number of the staphylococcus epidermidis CCSMS1601 is CGMCC (China General Microbiological Culture Collection Center) NO.30874. The staphylococcus epidermidis CCSMS1601 provided by the invention can be used for preparing the staphylococcus epidermidis. According to the present invention, the fermentation supernatant obtained by using the Staphylococcus epidermidis CCSMS1601 has the scalp flora regulation function so as to improve the dandruff, such that the scalp health is easily achieved; the strain CCSMS1601 disclosed by the invention has a good application prospect in the aspect of development of scalp care products for resisting inflammation, resisting oxidation and regulating scalp micro-ecology.

The invention discloses a method for producing medical cotton swabs through multi-stage disinfection and sterile packaging. According to the antibacterial cotton swab disclosed by the invention, the antibacterial agent ensures that the nano-silver particles are uniformly dispersed and stably combined on the cotton swab material through a precise preparation process, and the beneficial effects of the antibacterial agent are maximized: the elaborately designed formula can provide a continuous antibacterial effect, and the large specific surface area of the nano-silver particles ensures that the nano-silver particles are in full contact with microorganisms; the addition of triclosan and quaternary ammonium salt enhances the antibacterial spectrum and is effective to various pathogens, and the slow-release carrier can effectively control the release rate of the antibacterial agent in the preparation process, so that the antibacterial agent can continuously play a role in a relatively long time; the slow-release carrier enables the antibacterial agent to be slowly released on the surface of the cotton swab or in the cotton swab, so that the antibacterial effect can be kept for a longer time, the need of frequently replacing disinfection products is reduced, and the stability of the antibacterial agent is enhanced.

The present invention belongs to the field of microbial technology, and specifically relates to a strain of Staphylococcus capitis, a bacterial agent and its application, and a scalp care product. The present invention isolates and obtains a strain of Staphylococcus capitis from scalp for the first time. Experiments have confirmed that the fermentation supernatant of the Staphylococcus capitis is rich in active ingredients such as short-chain fatty acids, T-SOD enzymes and GSH-P enzymes, and has good anti-inflammatory and antioxidant effects. Antibacterial tests have shown that the fermentation supernatant of Staphylococcus capitis CCSMS0308 can promote the growth of normal scalp flora Propionibacterium acnes and Malassezia globosa, and inhibit the growth of harmful bacteria restrictive Malassezia, thereby regulating the balance between bacteria and fungi in the scalp, regulating the balance of scalp flora, reducing the growth and reproduction of harmful bacteria, and helping to improve the health of dandruff scalp, so it has good practical application value.

The utility model discloses an elastic carpet which comprises a carpet body, storage cloth is arranged on the surface of the carpet body, tooth pieces which are symmetrically distributed are arranged at the connecting position of the storage cloth and the carpet body, and a sliding block is arranged at one end of each tooth piece in a sliding mode. The elastic carpet has the advantages that the storage cloth is arranged on the surface of the carpet body, the storage cloth can form a zipper structure through the sliding block, the puller and the tooth pieces, then the zipper structure can enable the storage cloth to be unfolded, the storage cloth can be used for placing and filling replacement cotton in the carpet body conveniently, and the antibacterial fabric layer is arranged in the carpet body, so that the carpet body is not prone to falling off. The antibacterial fabric layer can effectively inhibit the growth of bacteria and reduce the reproduction of bacteria on the fabric, so that the risk of bacterial propagation is reduced, the flame-retardant fireproof fabric has the characteristic of inhibiting flame propagation and can effectively reduce the risk of fire disasters, and the water-absorbing cotton core has good moisture absorption performance and can quickly absorb and remove moisture on the fabric, so that the fabric has a good anti-bacterial effect. The high-elasticity silk cotton layer has good elasticity and rebound resilience, and better treading experience is provided.

The utility model relates to the technical field of medical equipment, and discloses a breathing machine filtering device which comprises a vessel, a containing groove is formed in the top of the vessel, and antibacterial plastic is connected into the containing groove in a clamped mode. According to the breathing machine filtering device, through the arrangement of the filtering mechanism and the dismounting and mounting mechanism, when air enters the container and passes through the filtering mechanism, fiber glass captures tiny particles through the high-density and fine fiber structure of the fiber glass, and then a nanofiber membrane secondarily intercepts the tiny particles through the fine structure; residual micro fibers are captured on the surface through the pore size of the protective film, surface tension and electrostatic adsorption, and gas pollutants and odor in the air are adsorbed by activated carbon, so that the micro fibers are favorably filtered, and the micro fibers are prevented from being inhaled by a patient, stimulating the respiratory tract and causing discomfort and even anaphylactic reaction; the threaded ring and the screw cap are of threaded structures, so that the filtering mechanism is convenient to disassemble, assemble and replace in the later period.

The utility model relates to the technical field of blood protein feed, and discloses a blood protein feed-based storage barrel with a cooling function, which comprises a storage barrel, a feed inlet is arranged at the top of an inner cavity of the storage barrel, two connecting hoops are fixedly connected to the side surface of the storage barrel, and a water cooling device is fixedly connected to one side, far away from the storage barrel, of each connecting hoop. A barrel cover is hinged to the top of the storage barrel, a plasma outlet is fixedly connected to the bottom of the storage barrel, a circulating cooling device is arranged in an inner cavity of the storage barrel, a supporting frame is fixedly connected to the position, corresponding to the lower portion of the barrel cover, of the top of the inner cavity of the storage barrel, and an air sealing block is movably clamped to the top of the supporting frame. According to the utility model, the feed can be kept in a low-temperature environment, the growth and reproduction of microorganisms in the blood protein feed can be slowed down, the shelf life of the blood protein feed can be prolonged, the sealing performance is good, the influence of other external factors is reduced, the freshness and nutritional ingredients of the feed can be kept, and the shelf life of the feed can be prolonged.

The utility model relates to the technical field of tobacco field irrigation, in particular to a tobacco field irrigation device based on Internet of Things, which comprises a support frame and a sprinkling irrigation device, the support frame is used for bearing the sprinkling irrigation device, the sprinkling irrigation device comprises a nozzle, the nozzle comprises a water inlet end and a water outlet end, the water inlet end is connected with a water pipe, and the water outlet end is used for discharging water. The spray head can move, so that water sprayed from the outlet end can be sprayed around the tobacco plants; the system further comprises a soil moisture wireless sensor, the soil moisture wireless sensor is used for measuring the humidity of tobacco field soil and wirelessly transmitting humidity information to the irrigation cloud platform, the irrigation cloud platform has the function of guiding the irrigation opportunity and water volume, and the irrigation cloud platform sends an instruction to the first controller. The first controller controls opening and closing of the electromagnetic valve on the water pipe and the opening time of the electromagnetic valve, so that the water amount in the water pipe is controlled; irrigation management is carried out on the tobacco field through the tobacco field irrigation device based on the Internet of Things, manual operation is reduced, and the irrigation efficiency and accuracy are improved.

This application provides a method for preparing an anti-biofouling ultrafiltration membrane. By copolymerizing cellulose acetate and dextran-40 and optimizing their composition and ratio, the pore size distribution range of the ultrafiltration membrane can be controlled, achieving more precise pore size control. Dextran-40 has good anti-protein adsorption properties, while cellulose acetate has certain hydrophilic properties. The copolymerized product may have better antifouling properties, reducing protein adsorption and membrane adhesion, and extending the service life of the ultrafiltration membrane. This solves the technical problems of poor antifouling performance of existing ultrafiltration membranes, which leads to a decrease in membrane flux, and poor adhesion of chitosan to polyethersulfone, which easily dissolves and causes the failure of antifouling ability. By fixing the composite material of silver nanoparticles and chitosan onto the ultrafiltration membrane by inkjet printing, an antibacterial layer can be formed, enhancing the antibacterial properties of the ultrafiltration membrane and reducing the adhesion and reproduction of microorganisms.