46results about How to "Quick kill" patented technology

The invention discloses stenotrophomonas maltophilia bacteriophage, a composition and application thereof. Relates to the technical field of biology, the stenotrophomonas maltophilia bacteriophage comprises a bacteriophage vBSma-SZP9, the taxonomic name of the bacteriophage vBSma-SZP9 is Snotrophomonas phage, the Latin literature name of the bacteriophage vBSma-SZP9 is Snotrophomonas phage, the bacteriophage vBSma-SZP9 is preserved in the Guangdong Microbiological Culture Collection Center, the preservation address is the fifth floor of the building 59, No. 100 Courtyard, Xianlie Middle Road, Guangzhou, the preservation number is GDMCC No: 64509-B1, and the preservation date is May 16, 2024. The bacteriophage disclosed by the invention is wide in host spectrum, strong in infection ability and wide in temperature and acid-base tolerance range.

The invention relates to the technical field of polypeptides, and discloses a soybean polypeptide with an antibacterial function and a preparation method thereof.The soybean polypeptide with the antibacterial function is obtained by adding soybean polypeptide, quaternized cholic acid and modified chitosan into N, N-dimethylformamide and stirring for reaction. A chitosan group, a quaternary ammonium salt group, an imidazole group and a cholic acid group contained in the soybean polypeptide with the antibacterial function jointly form an antibacterial system, and a good antibacterial effect is achieved; wherein the chitosan group can destroy bacterial cell walls to death bacteria, so that the antibacterial effect is achieved, and the cholic acid group also has a relatively good antibacterial effect; the imidazole group rapidly kills bacteria by destroying bacterial cell membranes, affecting bacterial metabolism and inhibiting formation of biological membranes, a good antibacterial effect is achieved, quaternary ammonium salt is adsorbed to the negatively charged bacterial cell membranes through the cationic characteristics of quaternary ammonium salt, the cell membranes are broken, and therefore the bacteria are rapidly killed.

The present invention discloses a strain of Riemerella anatipestifer phage PT15, a phage composition thereof and its application. The phage PT15 has a deposit number of CGMCC No. 22377 and was deposited in the China General Microbiological Culture Collection Center on April 12, 2021. The present application also provides a phage composition comprising the above-mentioned phage. The above-mentioned phage and phage composition can be used as active ingredients for the preparation of therapeutic drugs and feed additives, and are used in the prevention and treatment of duck bacterial serositis. The phage composition has the advantages of safety, high efficiency and non-toxic side effects, and can be used as an active ingredient of a new type of environmental disinfectant to effectively prevent and control the pollution of breeding environment and feeding facilities, and has good application prospects.

The invention discloses a wide-spectrum bacteriophage EFH2 capable of eliminating enterococcus faecalis suffering from humans and animals, and relates to the technical field of biology. The wide-spectrum bacteriophage is preserved in the China Center for Type Culture Collection on September 26, 2024, and the preservation number of the wide-spectrum bacteriophage is CCTCC NO: M 20242087. The wide-spectrum bacteriophage EFH2 is a newly found bacteriophage, has good tolerance under the conditions that the pH is 3-9 and the temperature is 4-60 DEG C, and has the titer as high as 2.31 * 10 < 8 > PFU / mL after being cultured for 8 hours under the condition that the MOI is 0.01. The wide-spectrum bacteriophage EFH2 is wide in antibacterial spectrum, short in incubation period, high in outbreak amount, capable of rapidly killing host bacteria, small in toxic and side effect, high in safety, wide in temperature and acid-base tolerance range, good in hydrophilicity and capable of well killing and disinfecting animals infected with multi-drug-resistant enterococcus and environments and food polluted by enterococcus.

The invention discloses a preparation method and application of gold-modified cerium oxide drug-loaded nanoparticles, and the preparation method comprises the following steps: dispersing soluble cerium salt in an ethylene glycol solution of a template agent, adjusting the pH value to 5-7, then carrying out a hydrothermal reaction to obtain cerium oxide nanoparticles, then dispersing the cerium oxide nanoparticles in ultrapure water, and carrying out ultrasonic treatment to obtain the gold-modified cerium oxide drug-loaded nanoparticles. And adding gold tetrachlorate into the dispersion system, adjusting the pH value to 7-11 to obtain gold-modified cerium oxide nano-microspheres, and loading chemotherapeutic drugs to obtain the gold-modified cerium oxide drug-loaded nano-microspheres. The obtained gold-modified cerium oxide drug-loaded nano-microspheres have the advantages of multiple enzyme activities, good biocompatibility, excellent antibacterial performance and excellent photo-thermal performance, can relieve an anoxic environment in tumor treatment, consume GSH, overcome tumor drug resistance and the like, and have good application prospects in the field of tumor treatment.

The invention relates to a separation net and a preparation method thereof, the separation net is formed by blending the following components: 70-90% by mass of polypropylene, more than 0% and less than 10% by mass of polyethylene, 5-15% by mass of a toughening component, 0.2-2% by mass of an antibacterial agent, 0.2-2% by mass of a hydrophilic agent, and the balance of a lubricant and an antioxidant, and the sum of the contents of the components is 100% by mass. The separation net disclosed by the invention not only has excellent comprehensive mechanical properties including toughness, strength and dimensional stability, but also has excellent antibacterial property, pollution resistance and hydrophilicity. The separation net can effectively avoid the phenomena of rough surface, sharp corners, non-uniform wire diameter, non-uniform thickness and the like, the appearance quality is better, the thickness is convenient to regulate and control, the membrane (reverse osmosis membrane) is not easy to damage, the treatment efficiency of the membrane element is effectively improved, and the service life of the membrane element is effectively prolonged.

The utility model relates to the technical field of disease and insect pest control, specifically relates to a disease and insect pest control box for agriculture, including base, the upper surface fixed connection of base has prevention and cure box body, prevention and cure mechanism, the prevention and cure mechanism includes prevention and cure subassembly, shakes off subassembly and self -starting subassembly, the prevention and cure subassembly includes the inside top surface fixed connection of prevention and cure box body bug light, prevention and cure box body is slidably connected with a no. The utility model discloses through being provided with prevention and cure subassembly, can high -efficiently lure and capture, kill phototactic pest and collect, through being provided with shakes off subassembly, can automatic cleaning pest cadaver on electric insect net, through being provided with self -starting subassembly, can drive clear insect without external power supply, save the cost's time also more accord with actual use demand.

The invention belongs to the technical field of microorganisms, and particularly relates to a bacteriophage for splitting bovine-derived salmonella and application of the bacteriophage. The technical problem to be solved by the invention is to provide a new choice for treating infection of bovine-derived salmonella. According to the technical scheme, the invention relates to a bacteriophage Seoulvirus GX2401 for splitting bovine-derived salmonella, wherein the preservation number of the bacteriophage Seoulvirus GX2401 is CCTCC (China Center for Type Culture Collection) NO: M20241156. The bacteriophage is a wide host spectrum thallus, can split six different salmonella, has a wide antibacterial spectrum, and can be applied to preparation of drugs for preventing and treating bovine salmonella infection diseases.

The invention discloses an intelligent closestool capable of detecting body fat, which comprises a closestool body, the inner surface of the closestool body is fixedly connected with a urinal, the lower surface of the urinal is communicated with a blow-off pipe, the outer wall of the urinal is fixedly connected with a circle of drain pipe, and the side surface of the drain pipe is communicated with the urinal through a plurality of water supply ports; the side surface of the drainage pipe is communicated with a water supply pipe, the upper surface of the closestool body is fixedly connected with a water tank, and the upper surface of the closestool body is rotationally connected with a cushion, through the components, the cushion can be quickly recovered to a dry and comfortable state after being cleaned, a user does not feel uncomfortable due to the unclean cushion, and comfortable closestool experience is provided; the air in the toilet urinal can be filtered and then pumped out, the activated carbon filter plate can adsorb peculiar smell and harmful gas (such as ammonia gas and the like) in the air in the urinal, the peculiar smell in the toilet is effectively reduced, the air quality of the whole toilet is improved, and the comfort of a user is improved.

The present invention discloses a control method, device, vehicle and computer-readable storage medium of an air conditioner. The air conditioner includes an air purification subsystem. The control method of the air conditioner includes: obtaining indoor polluted gas parameters and air conditioning parameters; determining the purification mode of the air conditioner according to the polluted gas parameters; and controlling the operating state of the air purification subsystem according to the air conditioning parameters in the purification mode. The present invention obtains indoor polluted gas parameters and air conditioning parameters through real-time monitoring, and can determine the current optimal purification mode of the air conditioner according to the polluted gas parameters, and in the determined purification mode, accurately control the operating state of the air purification subsystem according to the air conditioning parameters, so that the concentration of indoor polluted gases can be quickly and efficiently reduced, bacteria and microorganisms can be killed, and indoor air quality can be improved under the premise of ensuring user safety. At the same time, unnecessary energy consumption can be reduced and energy utilization efficiency can be improved.

The present invention provides an environmentally friendly terminator, preformulation, preparation and application of an emulsion styrene butadiene rubber polymerization system, wherein the environmentally friendly terminator is an aqueous solution; the mass concentration of the environmentally friendly terminator A ion is 20% to 40%; the mass concentration of the terminator B is 10% to 15%; the mass ratio of the terminator A ion to the terminator B is 10:1 to 1:1; the terminator A ion is a piperazine-N,N-bis-dithiocarbamate ion; and the terminator B is N-isopropylhydroxylamine. There is a bis-dithiocarbamate group in terminator A, and only a small amount can terminate the polymerization reaction. Terminator B is a nucleophilic acylating agent, which is rapid and effective in terminating the reaction. The environmentally friendly terminator directly destroys the peroxide in the system, quickly eliminates free radicals and initiators in the emulsion styrene butadiene rubber polymerization reaction, terminates the reaction and does not affect the stability of the emulsion.

The invention discloses an antibacterial packaging material as well as a preparation method and application thereof. The antibacterial packaging material is prepared from pineapple leaf fiber carboxymethyl cellulose, carboxymethyl cellulose, cationic starch, 3-hydroxyl octoate, alpha-tocopherol, dimethylbiguanide hydrochloride, a plasticizer, nitrogen-doped carbon quantum dots, plant essential oil, nano zeolite powder, carvacrol and citric acid. The preparation method comprises the following steps: dispersing the cationic starch in the deionized water, dispersing the pineapple leaf fiber carboxymethyl cellulose and carboxymethyl cellulose in the deionized water, completely dissolving, adding into a starch solution, sequentially adding the rest components, uniformly mixing, heating, reacting, forming a film, and drying to obtain the packaging material. According to the antibacterial packaging material, the cationic starch, the carbon quantum dots, the plant essential oil and other related components are combined for the first time to form a novel antibacterial packaging material, the antibacterial performance is remarkably improved and kept for a long time through the synergistic effect of all the components, and the antibacterial packaging material is high in material stability, simple and convenient in preparation process, low in cost and high in application and popularization value.

The invention provides a preparation process of a long-acting composite disinfectant for a livestock farm, and belongs to the technical field of disinfectant preparation. The preparation process comprises the following steps: preparing dihydrodemethyleneberberine; preparation of titanium dioxide-dihydrodemethyleneberberine at calcium phosphate; preparing a composite antibacterial nano emulsion; preparing an organosilicon quaternary ammonium salt antibacterial agent; and preparing the composite disinfectant. The composite disinfectant prepared by compounding the titanium dioxide-dihydrodemethyleneberberine calcium phosphate, the composite antibacterial nano-emulsion and the organosilicon quaternary ammonium salt antibacterial agent does not contain mercury and contains arsenic; therefore, the composite disinfectant overcomes the defect of short-term effect, reduces the risk of drug resistance, and also gives consideration to environmental protection and biological safety.

The present invention discloses a self-cleaning electrostatic dust removal device, comprising a charged particle generating device for charging dust particles in the air; a charged particle separating device for separating the charged dust particles generated by the charged particle generating device, the charged particle separating device comprising a conduit and a flap connected to a refrigeration or heating system, the flap being sleeved on the conduit and connected to a grounding electrode; and a supporting assembly for installing the charged particle generating device and the charged particle separating device. The present invention utilizes the electric field formed by the ionization wire to charge dust particles in the air, and when the charge passes through the flap having the opposite charge, the flap can be adsorbed by the flap, thereby achieving the purpose of dust removal, and at the same time, the flap is cooled by a copper tube connected to the refrigeration or heating system, forcing the flap to condense and frost to achieve the purpose of self-cleaning.

Due to rapid development of the fine chemical industry, types and sources of pollutants are gradually complex. The sewage treatment equipment comprises a plasma generation source, an oxygen active particle generation assembly, a hydrodynamic cavitation reaction assembly and a power supply assembly which are connected in sequence, the plasma generation source is connected with the power supply assembly, and the oxygen active particle generation assembly is connected with the power supply assembly; the oxygen active particle generation assembly comprises an oxygen active particle generator, the oxygen active particle generator is provided with an air inlet and an oxygen active particle outlet, the hydrodynamic cavitation reaction assembly comprises a water inlet, a booster pump, a hydrodynamic cavitation reactor, a flash reactor and a water outlet which are communicated in sequence, and the water inlet is communicated with the booster pump through a first pipeline; the booster pump, the hydrodynamic cavitation reactor, the flash reactor and the water outlet are communicated through a second pipeline, a plurality of sensors are arranged on the second pipeline, and the hydrodynamic cavitation reactor is communicated with the oxygen active particle outlet. Harmful microorganisms are efficiently killed; organic pollutants are efficiently degraded.

The invention discloses a bacteriophage EFH1 capable of removing multidrug-resistant enterococcus, and relates to the technical field of biology. The phage EFH1 is preserved in the China Center for Type Culture Collection on September 26, 2024, the preservation address is Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M 20242089. The bacteriophage EFH1 is a newly found bacteriophage, has good tolerance under the conditions that the pH is 3-9 and the temperature is 4-70 DEG C, and has the titer as high as 7.1 * 10 < 9 > PFU / mL after being cultured for 8 hours under the condition that the MOI is equal to 0.01. The bacteriophage EFH1 is wide in antibacterial spectrum, short in incubation period, high in outbreak amount, capable of rapidly killing host bacteria in a culture medium, small in toxic and side effect, high in safety and wide in temperature and acid-base tolerance range, can be used as a disinfectant in livestock and poultry breeding, and has a good application prospect.

The utility model discloses an efficient purification device for air microbial pollution, and belongs to the fields of environment purification, microbial pollution control and health guarantee. According to the device, a far infrared lamp tube, a 254nm ultraviolet lamp tube, a low-temperature plasma generator and the like are arranged on a rotating base and a rotating platform, comprehensive disinfection is achieved through scientific and reasonable design of 254nm ultraviolet, far infrared, low-temperature plasma and other technologies, three operation modes are designed and sequentially include the energy-saving mode, the normal mode and the efficient mode, and the energy-saving effect is achieved. A user is allowed to select the most suitable working mode according to specific disinfection requirements and scenes, and the air purification efficiency can be effectively improved. The device has two 360-degree air supply and return modes of upper air supply and lower air return and lower air supply and upper air return, and can meet the microbial pollution control requirements of multiple scenes. The device can monitor ozone and temperature generated by operation of equipment in air, ensures that the ozone level in the environment is lower than the environmental quality requirement while microbial pollution is controlled, improves the disinfection efficiency of the equipment, and guarantees the operation safety of the equipment.

The application belongs to the technical field of antibacterial infection materials, and particularly relates to preparation and application of a biomimetic mineralization nanoparticle. x S y / AZM, which is obtained by fixing glucose oxidase (GOx) in FexSy nanoparticles hybridized with azithromycin (AZM) through a biomimetic mineralization strategy, and the nanoparticle GOx@Fe x S y / AZM serves as a therapeutic drug to catalyze a large amount of active oxygen free radicals (ROS) to improve inflammatory response in order to rapidly kill infectious microorganisms in the early stage of bacterial infection of a wound surface; and in the subsequent healing period, H2S released by the material and AZM will jointly promote the polarization of macrophages to M2 macrophages of a repair type to effectively mediate the tissue repair after a high inflammatory response, so that the ordered treatment of a high blood sugar infection wound surface is achieved.

The invention relates to the technical field of cyanobacteria treatment, in particular to a cyanobacteria bloom treatment device, comprising a treatment vessel body for treating cyanobacteria blooms, and further comprising: a connection block, which is located at the bow of the treatment vessel body; a cyanobacteria bloom treatment mechanism, which is installed on a side of the connection block away from the treatment vessel body, and the cyanobacteria bloom treatment mechanism is used to spray a fungicide on the water surface of the cyanobacteria bloom and then collect the cyanobacteria bloom; the cyanobacteria bloom treatment device enables the fungicide to fully react with the cyanobacteria bloom, thereby achieving the effect of quickly killing the cyanobacteria, and the cyanobacteria bloom treatment mechanism in the invention can also achieve the effect of quickly collecting dead cyanobacteria after the fungicide is evenly sprayed, so as to fully collect the dead cyanobacteria on the water surface and in the water, avoid the dead algae sunk into the water from consuming dissolved oxygen, and further achieve the effect of protecting the water quality.

The invention relates to the field of herbicides, and particularly discloses a nicosulfuron-mesotrione oil suspending agent and a preparation method thereof. The nicosulfuron-mesotrione oil suspending agent is prepared from the following raw materials: 40 to 50 parts of atrazine, 5 to 12 parts of nicosulfuron, 10 to 16 parts of mesotrione, 15 to 22 parts of an emulsifying agent, 1 to 3 parts of starch coated fat-soluble resin, 1 to 3 parts of nano dispersed fibers, 1 to 2 parts of a dispersing agent, 1 to 3 parts of a thickening agent, 0.5 to 1 part of a de-foaming agent and 50 to 60 parts of an oil solvent. The preparation method comprises the following steps: uniformly mixing and emulsifying the oil solvent and the emulsifier, then adding the atrazine, the nicosulfuron and the mesotrione, uniformly mixing and stirring, and sanding to obtain a mixture; adding starch-coated fat-soluble resin, nano dispersed fibers, a dispersing agent, a thickening agent and a defoaming agent into the mixture, uniformly mixing and stirring, and performing defoaming treatment to obtain a finished product. Meanwhile, the weeding composition has the advantages of high suspension rate, high stability, good water resistance and long weed prevention and control time.

The utility model relates to the field of disinfection equipment, in particular to a chopstick box based on an ozone sterilization and disinfection control circuit, which comprises the following components: an upper cover and a bottom box which are connected into a whole through a hinge; the disinfection structure is arranged on the upper cover, the disinfection structure comprises a control panel and a disinfection device, the storage cavity is formed between the upper cover and the bottom box and used for containing chopsticks, the heat conduction plate is arranged on the bottom box, and ozone can be generated through an ozone generator arranged on the upper cover and the chopstick box. The chopsticks in the storage cavity are efficiently sterilized and disinfected. Ozone has strong oxidizing capacity and can quickly kill microorganisms such as bacteria and viruses, so that sanitation and safety of the chopsticks are ensured, diseases are effectively prevented from entering the chopsticks from the mouth, and the chopsticks can be quickly and effectively dried, bacterium breeding is avoided, and dryness and sanitation of the chopsticks are kept through combined use of the heat conducting plate and the drying fan.

The invention relates to the technical field of diatom ooze decorative plates, in particular to a fireproof and antibacterial diatom ooze decorative plate and a preparation method thereof.The fireproof and antibacterial diatom ooze decorative plate comprises a base material layer, a decorative layer and a fireproof and antibacterial coating which are sequentially arranged from bottom to top; the fireproof and antibacterial coating comprises the following raw materials in parts by weight: 3-6 parts of nano silicon dioxide, 6-10 parts of methacryloyloxyethyl hexadecyl dimethyl ammonium chloride, 20-30 parts of 2-hydroxyethyl methacrylate phosphate, 5-10 parts of [(6-oxo-6H-dibenzo [C, E] [1, 2, 3] triazolo [3, 4-b] pyrimidine-2-yl)-1, 2, 3-triazolo [ The invention relates to a UV (ultraviolet) photoinitiator, which is prepared from the following components in parts by weight: 10 to 20 parts of 2, 2] oxophosphahexane-6-yl) methyl] succinic acid bis (2-hydroxyethyl) ester, 80 to 100 parts of polyurethane acrylate resin, 3 to 5 parts of photoinitiator and 20 to 40 parts of organic solvent. According to the fireproof and antibacterial diatom ooze decorative plate and the preparation method thereof, on the premise of ensuring the mechanical strength, the fireproof and antibacterial diatom ooze decorative plate not only has an excellent decorative effect, but also has fireproof performance and antibacterial performance at the same time.

The invention relates to a salmonella enteritidis bacteriophage, which is named as PAC / QD23121802, and the preservation number of the salmonella enteritidis bacteriophage is CGMCC No.46089. The salmonella enteritidis bacteriophage PAC / QD23121802 is in the form that the head part is of a 24-face structure, the length of the head part is 750-800nm, and the length of the tail part is 300-350nm. The invention also discloses a salmonella bacteriophage composition, wherein the salmonella bacteriophage composition contains the salmonella bacteriophage PAC / QD23121802 and the salmonella bacteriophage PAC / QD23120510. The invention also discloses a salmonella bacteriophage composition, the composition has wide spectrum, experimental data show that the composition can kill 100% salmonella enteritidis, and the bacteriophage composition has the advantage of enhancing the treatment effect of the bacteriophage. The genomes of the bacteriophage of the composition do not carry virulence genes, drug-resistant genes and lysogenic genes, so that the transmission of the virulence genes and the drug-resistant genes is not caused, and the use is safe.

The invention belongs to the technical field of microorganisms, and particularly relates to a bacteriophage for splitting K1 capsular klebsiella pneumoniae and application of the bacteriophage. The technical problem to be solved by the invention is to provide a new choice for treating high-toxicity klebsiella pneumoniae infection. According to the technical scheme, the phage Yonganavius KP03 for splitting K1 capsular klebsiella pneumoniae is provided, and the preservation number of the phage is CCTCC (China Center For Type Culture Collection) NO: M20241155. The bacteriophage is specific in antibacterial spectrum and short in incubation period, can be applied to preparation of drugs for preventing and treating high-toxicity klebsiella pneumoniae, and has good treatment and killing effects on animals infected with multi-drug-resistant klebsiella pneumoniae and environments polluted by the multi-drug-resistant klebsiella pneumoniae.

The invention discloses anti-freezing taro milk with high emulsibility. The taro milk is prepared from the following raw materials: 15-25% of red bud taro, 5-8% of coconut oil, 0.6-1.5% of salt, 0.3-0.8% of an acidity regulator, 5-7% of sugar, 1-2% of diglyceride and the balance of water. The raw materials are metered in percentage by mass. The preparation method comprises the following steps: treating raw materials, pulping, refining primary pulp, mixing, emulsifying, homogenizing, sterilizing and bagging. According to the invention, multiple salts are added to interact with multiple acidity regulators so as to indirectly improve the emulsibility of the emulsion, and the combination of the salts and the acidity regulators significantly enhances the emulsibility of the anti-freezing taro milk and improves the stability of the anti-freezing taro milk by regulating multiple aspects such as charge, pH and viscosity; the dual-action mechanism enables the emulsion to be more reliable in storage and use processes.

The utility model relates to the technical field of air purification and disinfection machines, and discloses a pipeline booster type air purification and disinfection machine which comprises a disinfection machine shell, a filter screen frame is installed in the disinfection machine shell, a motor is fixedly installed on the upper portion of the interior of the filter screen frame, a transmission shaft is fixedly installed at the output end of the motor, and the transmission shaft is fixedly installed on the transmission shaft. A dust scraping plate is fixedly installed on the lower portion of the transmission shaft, a dust screen is installed on the surface of the filter screen frame, the upper portion of the dust screen is connected with the transmission shaft in a wrapping mode, an ultraviolet disinfection module is installed in the disinfection machine body, bacteria and viruses in a pipeline can be efficiently and safely killed, secondary pollution is avoided, operation is easy and convenient, and energy conservation and environmental protection are achieved.

The invention discloses an inorganic plastic oxygen composite material and application thereof in a green agriculture and plant maintenance system. The inorganic plastic oxygen composite material is prepared from the following components: an inorganic internal peroxide bridge composite compound, an inorganic mediated catalytic material and a material balancing and stabilizing system, through the synergistic effect of all the components, the generation amount and the utilization efficiency of singlet oxygen are remarkably improved, and then the excellent pest control and pesticide residue degradation effects are achieved. In actual agricultural application, an aqueous solution prepared from the composite material can generate air containing singlet oxygen after being atomized and aerated, the air is uniformly released through a greenhouse pipeline, germ spores in the air can be quickly killed, and meanwhile, the composite material is sprayed on the surfaces of crops, so that mold and gray mold of the crops such as tomatoes and cucumbers can be effectively prevented and treated; the efficient degradation effect on organic phosphorus pesticide residues on the surfaces of the vegetables is realized. The whole technical scheme does not need to use chemical pesticides, meets the development requirements of green agriculture, can effectively reduce pesticide residue pollution, and protects the ecological environment of soil.

A fusion gene, a recombinant novel coronavirus high-efficiency immune DNA vaccine, a construction method and use thereof are provided. The immune DNA vaccine ZD-nCor19 provided herein uses RBD protein, residues 301-538 in the S2 subunit and residues 138-369 in the N protein of the novel coronavirus as target antigens, and has specific immune synergism molecules introduced at suitable positions, and thus can simultaneously efficiently induce humoral immunity and cellular immunity, and can avoid safety problems associated with ADE that may be generated by the full-length S protein and the full-length N protein, thereby achieving dual effects of prevention and treatment. The vaccine can be used as a safe, efficient and stable vaccine variety against novel coronavirus infection.

The invention discloses a preparation method and application of an MXene-Au nano composite material multifunctional antibacterial platform. According to the technical scheme, the preparation method is characterized in that a Ti3C2-Au nano composite material is constructed by adopting an electrostatic assembly method in combination with a seed growth method. An ultrathin Ti3C2 nanosheet is stripped from a Ti3AlC2MAX block, gold seeds are loaded by adopting an electrostatic self-assembly method after amination, and composite materials with different gold nanostructures are formed on the Ti3C2 nanosheet by adopting a seed growth method or an electrostatic adsorption effect. The method is simple in process and safe to operate, the synthesized composite material (Ti3C2-Au NWs) of gold nanowire arrays on the two faces of the Ti3C2 nanosheet can achieve sensitive SERS bacterial detection and bacterial adhesion, multiple functions of bacterial capture, SERS detection, photo-thermal sterilization and the like are achieved, and a direction is provided for clinically achieving rapid, sensitive and accurate detection and killing of pathogenic bacteria.

The utility model relates to the technical field of milk warmers, and discloses a disinfection type portable milk warmer, which comprises a shell and a mounting cover, the top of the shell is fixedly connected with a connecting ring, a mounting plate is clamped at the middle lower part of the inner side of the mounting cover, the top of the mounting plate is fixedly connected with a quadrangular pyramid reflector, and the bottom of the mounting plate is fixedly connected with the connecting ring. A voltage driving plate is fixedly connected to the top of the inner side of the mounting cover, a type-C port is fixedly connected to the left side of the voltage driving plate, and UV-LED lamp beads are fixedly connected to the right end of the bottom of the voltage driving plate. In the utility model, the voltage driving plate supplies power to the UV-LED lamp beads, and the quadrangular pyramid reflector reflects ultraviolet rays for disinfection, so that the effect of efficiently disinfecting the contact part of the feeding bottle and the milk warmer is realized, bacteria in the contact area of the feeding bottle can be quickly killed, the sanitation is ensured, the operation is simple, the disinfection is synchronously completed before milk warming, the time is saved, and the working efficiency is improved. The size and weight are not increased, cleaning is convenient, and the user experience is improved.