545results about How to "Improve the bactericidal effect" patented technology

In the system, an underwater double-bubble plasma generating device is electrically connected with a low-temperature plasma power supply, a pair of bubble reactors are arranged at intervals and at least partially immersed in a container, and a metal rod extends in a quartz tube through a positioning ring connected with a tube opening of the quartz tube; the metal rod is connected with a low-temperature plasma power supply; the gas channel introduces gas into the quartz tube through the positioning ring; the nitrogen source is communicated with one bubble reactor to introduce nitrogen through an air passage, the argon source is communicated with the other bubble reactor to introduce argon through an air passage, and when voltage is applied to the two metal bars of the pair of bubble reactors, the two bubble reactors discharge simultaneously to generate plasmas so as to generate NO2-and H2O2 active particles respectively; nO2 <-> and H2O2 active particles react to generate ONOO <->, and the sterilization and disinfection functions of the plasma activated water are enhanced based on a chemical path of the system.

The invention relates to the technical field of bactericides, and discloses an oilfield flooding bactericide containing plant bactericidal components and a preparation method thereof. The preparation method comprises the following steps: loading the plant-based traditional Chinese medicine extract and the isothiazolinone-based corrosion inhibitor on the silver-loaded cyclodextrin metal organic framework to prepare an antibacterial agent / silver-loaded cyclodextrin metal organic framework composite material, and mixing the antibacterial agent / silver-loaded cyclodextrin metal organic framework composite material with methyl methacrylate to prepare the antibacterial agent / silver-loaded cyclodextrin metal organic framework composite material. The bactericide obtained by carrying out copolymerization reaction on modified hydroxyquinoline, vinyl quaternary phosphonium salt and methacrylic acid through an in-situ polymerization method can effectively kill and inhibit the breeding of sulfate reducing bacteria and other bacteria in oilfield reinjection water, and has a certain corrosion inhibition effect.

The invention provides universal functional formula milk powder for cats and dogs and a preparation method thereof, and relates to the field of pet formula food. The formula milk powder consists of goat milk powder, colostrum powder, whey protein powder, lactoferrin powder, yolk powder, immune globulin powder, compound grease, compound minerals, compound vitamins, choline, taurine, compound prebiotics, compound probiotics, docosahexaenoic acid, arachidonic acid, casein phosphopeptides, L-glutamine and beta-galactosidase. And the goat milk powder, colostrum powder, whey protein powder, lactoferrin powder, yolk powder and immune globulin powder are subjected to low-temperature sterilization treatment by adopting an induced electric field or high-pressure microjet. The cat and dog formula milk powder overcomes the defects in the prior art, through compounding of basic nutritional ingredients and functional ingredients, a novel low-temperature sterilization technology is adopted for sterilization treatment, on the premise that the functionality of the formula milk powder is guaranteed, the nutritional value of the formula milk powder is reserved to a greater extent, and healthy growth and development of cats and dogs are promoted.

The invention discloses a garment sterilization process and a garment manufacturing process, and relates to the technical field of garments.The preparation stage includes the steps that whether to-be-sterilized garments are intact or not is checked, if damage, stains and the like exist, pretreatment needs to be conducted, the garments need to be thoroughly cleaned, impurities such as stains and oil stains on the surfaces are removed, and in the cleaning process, the garments are cleaned; a proper detergent can be selected according to the fabric characteristics of the clothes, so that the damage to the fabric is avoided, the integration of artistry and technicality is realized, the work of the clothes manufacturing process becomes more full, the artistry and technicality characteristics of the clothes manufacturing process are embodied in the clothes manufacturing process, the design of the contemporary clothes becomes more free, and the design of the contemporary clothes is more flexible. The system is more personalized and can reflect the development condition of the modern society.

The invention provides an air conditioner and a control method of the air conditioner, the air conditioner comprises a machine shell, an evaporator, a multi-ion sterilization module and a humidifier, the machine shell is provided with an air duct and an air outlet communicated with the air duct, at least one part of the evaporator is arranged in the air duct, the multi-ion sterilization module is arranged in the air duct, and the humidifier is arranged in the multi-ion sterilization module. At least one multi-ion sterilization module is arranged on one side of the air inlet end of the evaporator, at least another multi-ion sterilization module is arranged between the evaporator and the air outlet, the humidifier is arranged on the machine shell, and a mist outlet of the humidifier is communicated with the air channel and arranged on one side of the air inlet end of the evaporator. According to the air conditioner, the multi-ion sterilization module and the humidifier are arranged in the air duct, and the mist outlets of the multi-ion sterilization module and the humidifier are formed in the front end of the evaporator, so that the cleanliness and the sterilization effect of air can be effectively improved, and the comfort level of a user is improved; therefore, the problems that in the prior art, an air conditioner is low in sterilization efficiency and prone to causing secondary pollution are solved.

The invention provides a cleaning agent with double effects of cleaning and sterilization for a scrubber and a preparation method of the cleaning agent. The cleaning agent comprises the following components in parts by weight: 5-10 parts of a solvent, 10-20 parts of a surfactant, 0.5-3 parts of a washing assistant, 0-1 part of a pH regulator, 1.5-3 parts of a bactericide, 0.3 part of essence, 0.01-0.1 part of an organic silicon emulsion and the balance of deionized water, wherein the total parts by weight of the components are 100. According to the invention, low-foam and foam-inhibiting components and long-acting antibacterial components are added, and the surfactant matched with the system and the addition amount of the surfactant are adjusted at the same time, so that while the cleaning and decontamination capabilities are ensured, the cleaning agent is endowed with strong bactericidal capability and long-acting antibacterial performance, the interior and exterior of the scrubber equipment are not damaged, and the occurrence of the situation that the equipment is mistakenly reported and halted is avoided.

The invention provides a deep ultraviolet LED light source sterilization and disinfection non-negative pressure device, and relates to the technical field of sterilization and disinfection. Fixed frames are fixed to the front end and the rear end of the box body, sealing plates are fixed to the fixed frames, movable plates are arranged on the fixed frames in a sliding mode, a mounting plate is arranged at the bottom in the box body, and a bottom cylinder is mounted at the lower end of the mounting plate through bolts. The sterilizing lamp emits deep ultraviolet rays to irradiate and sterilize an object, the ultraviolet light reflecting coating on the light reflecting plate can effectively reflect the deep ultraviolet rays, comprehensive sterilization of the surface of the object is achieved, the problem of dead angles possibly occurring in a traditional sterilization mode is avoided through the design, thoroughness of sterilization is guaranteed, and the sterilizing effect is good. Through cooperative work of the first motor and the second motor, the inner rod can stir the supporting plate to swing to enable the reflecting plate to move, so that the uniformity and the coverage degree of ultraviolet irradiation are improved, the dynamic disinfection mode can better adapt to objects of different shapes and sizes, and the disinfection efficiency is improved.

The invention belongs to the field of biotechnology, and specifically relates to an application of a polypeptide in preparing a product for preventing or treating oral diseases. The amino acid sequence of the polypeptide is shown in SEQ ID NO.1, and the polypeptide has strong bactericidal ability against Streptococcus mutans, Streptococcus sobrinus, Lactobacillus acidophilus, and Lactobacillus casei, with an MIC range of 8 μg / mL-16 μg / mL and an MBC range of 8 μg / mL-16 μg / mL.

The utility model provides a swimming pool cleaning robot with a germicidal lamp. The swimming pool cleaning robot comprises a shell limiting a containing cavity, a power assembly connected with the shell, a filtering assembly, a pump assembly and the germicidal lamp, wherein the filtering assembly, the pump assembly and the germicidal lamp are contained in the shell. The shell is provided with a water inlet and a water outlet which are in fluid communication. The power assembly is used for providing power to drive the swimming pool cleaning robot to advance in a swimming pool. The filtering assembly is provided with a filtering cavity in fluid connection with the water inlet and the water outlet, and the pump assembly is used for driving water flow to enter the containing cavity from the water inlet, and the water flow is discharged from the water outlet after being filtered by the filtering assembly. And a light reflecting layer is arranged on the inner wall of the shell in a position opposite to the light emitting surface of the sterilizing lamp.

The invention belongs to the technical field of polymer composite materials, and discloses a method for preparing an aqueous polyvinyl chloride emulsion and a functional film and applications thereof, wherein the preparation steps are as follows: firstly, a hydrophilic modifier and polyvinyl chloride are reacted to obtain hydrophilic modified polyvinyl chloride; then a quaternary ammonium salt is used to modify a lignin derivative to obtain a lignin quaternary ammonium salt; finally, the lignin quaternary ammonium salt and the hydrophilic modified polyvinyl chloride are uniformly dispersed in a mesh gel structure of sodium carboxymethyl cellulose to obtain an aqueous polyvinyl chloride emulsion, and further film-formed to obtain a polyvinyl chloride functional film. The polyvinyl chloride functional film provided by the invention has good hydrophilic properties, anti-ultraviolet and antibacterial properties, and the preparation process is convenient to operate, conforms to the concept of green environmental protection, and can be applied to the fields of film materials such as gloves and functionalized packaging.

The invention discloses a pharmaceutical composition for treating diabetic foot ulcer in the technical field of medicine, the pharmaceutical composition comprises loropetalum chinense extract, angelica sinensis extract, liquorice extract, angelica dahurica extract and lithospermum erythrorhizon extract, and the application dosage form of the pharmaceutical composition is gel. A hydrogel carrier of the gel is antibacterial hydrogel which is formed by PDLA-CPC-PDLA and PLLA-PEG-PLLA through complexation, and the antibacterial hydrogel is adhered to an application capable of being heated by self; the antibacterial hydrogel is fixed on the surface of a wound through the application, the medicine is separated out from the hydrogel by utilizing the temperature difference between a patient and the application, and the medicine is accumulated on the surface of the wound, so that the absorption of the medicine by the wound is facilitated, and the healing process of the wound is accelerated.

A photocatalytic sterilization technology is a technology for killing microorganisms such as bacteria, viruses and the like by utilizing active substances generated by a specific material under an illumination condition. The technology mainly depends on the performance of photocatalytic materials, especially semiconductor materials such as titanium dioxide (TiO2). When the photocatalyst is irradiated by light with a specific wavelength, electrons in the material are transited from a valence band to a conduction band to form electron-hole pairs. The electrons and holes have very high chemical activity, can react with water or oxygen to generate free radicals with strong oxidizing capacity, and can destroy cell walls or cell membranes of microorganisms to cause leakage of substances in cells, so that the sterilization effect is achieved. The invention provides a TiO2 (at) Ag / Ti-MOF functional material aiming at the problems of low light utilization rate and insufficient reaction active sites of a TiO2 photocatalytic material. According to the TiO2 (at) Ag / Ti-MOF functional material, Ag-MOF is constructed on the basis of a Ti-MOF framework, controllable slow release of Ag ions is achieved, and the long-time effective sterilization effect is achieved.

The utility model discloses a water dispenser with a tail end outlet water sterilization function. The water dispenser comprises a drinking water tank, a sterilization cylinder is arranged in a round hole formed in the middle of the top wall of the drinking water tank, the upper end of the outer side of the sterilization cylinder is in threaded connection with a connector, water inlet holes which are evenly distributed are formed in the middle of the connector, a water pipe penetrates through the bottom of the inner wall of the sterilization cylinder, water storage tanks are symmetrically arranged on the front wall of the drinking water tank, and the front ends of the water pipe are communicated with the interiors of the adjacent water storage tanks. Outer pipes are arranged on the front walls of the water storage tanks in a penetrating mode, the front ends of the outer pipes penetrate through the front wall of the drinking water tank and are provided with faucets, storage grids are arranged at the lower end of the front surface of the drinking water tank, the storage grids and the faucets are installed in a matched mode, and bases are arranged at the four corners of the lower surface of the drinking water tank. The sterilization effect of the device is improved by performing multi-stage sterilization on drinking water, and meanwhile, the activated carbon filter screen of the device is convenient to disassemble and replace.

The invention provides a preparation method of a biological functional agent containing bioactive components, which comprises the following steps: dispersing the bioactive components in water; adding the zeolite-loaded titanium dioxide composite material, absolute ethyl alcohol, isopropyl triisostearoyl titanate and polyvinylpyrrolidone into the mixed solution, stirring at the temperature of 65-75 DEG C to obtain a mixed solution containing bioactive components, stirring for 80-100 minutes, and centrifugally drying to obtain the composite material. According to the preparation method of the biological functional agent containing the bioactive components, the loading capacity of the bioactive components on the carrier is improved, the stability of the bioactive components is improved, and the slow release effect is enhanced, so that the preparation efficiency and performance of the biological functional agent are improved; wide prospects are provided for application in the fields of medicines, cosmetics, environmental protection and the like.

The invention discloses an Escherichia coli phage microcapsule causing sheep diarrhea and a preparation method of the Escherichia coli phage microcapsule. The preparation method comprises the following steps: by taking sheep-derived pathogenic escherichia coli as host bacteria, separating from an environmental sewage sample to obtain bacteriophage, and carrying out microencapsulation on the bacteriophage to obtain the bacteriophage microcapsule. Experiments show that the bacteriophage microcapsule has a relatively good treatment effect on sheep-derived pathogenic escherichia coli infection, has relatively strong tolerance and release property to a digestion environment, and has a good application prospect in the aspects of research and development of oral bacteriophage preparations and the like.

The invention discloses a preparation method of boric acid-modified AIE nanoparticles and their application in rapid detection and efficient killing of Staphylococcus aureus. The invention belongs to the technical field of food safety immunoassay and photocatalytic sterilization, and specifically relates to a method for rapid detection and efficient killing of Staphylococcus aureus based on aggregation-induced luminescence materials. The purpose of the invention is to solve the problems that the existing fluorescent immunoassay method is prone to partial or complete quenching when detecting bacteria, which limits its application, and the traditional organic photosensitizers are limited by their planar rigid π-conjugated structure and poor water solubility, which lead to aggregation fluorescence quenching and insufficient ROS production, which limits their application. A boric acid-modified AIE nanoparticle is used in the rapid detection of Staphylococcus aureus. A boric acid-modified AIE nanoparticle is used in the efficient killing of Staphylococcus aureus. The invention proposes a multifunctional integrated platform that can not only provide early warning of the presence of bacteria, but also avoid the massive reproduction of bacteria.

The invention belongs to the technical field of daily chemical products, and discloses an antibacterial fabric softener as well as a preparation method and application thereof. The antibacterial fabric softener is prepared from the following raw materials in percentage by mass: 3 to 15 percent of diester gemini quaternary ammonium salt; 1 to 10 weight percent of oleic acid-based imidazoline quaternary ammonium salt; 0.1-3 wt% of an organic counter ion quaternary ammonium salt; 0.1 to 2 weight percent of polycation head group quaternary ammonium salt; 0.1 to 1 wt% of alkyl morpholine quaternary ammonium salt; 5-10 wt% of an emulsifier; 0.5-3 wt% of a viscosity stabilizer; 2-20 wt% of a cosolvent; 0.1 to 1 wt% of an aromatic agent; 0.1 to 0.5 wt% of a pH conditioning agent; 0-0.1 wt% of a pigment; and the balance water. The obtained fabric softener has good stability at low temperature and normal temperature, the treated fabric has excellent fabric softness, antistatic property, smoothness and antibacterial property and is not prone to yellowing, and the rewettability of the fabric is greatly improved.

The utility model relates to the technical field of beer barrel beer spear opening sterilization, in particular to beer barrel beer spear opening automatic sterilization equipment which is characterized in that a lower cover is arranged at one end of a beer spear body, an inclined plate is arranged in the lower cover, a through hole is formed in the side face of a containing groove, a sealing ring is arranged on the outer ring face of the lower cover, a filter plate is arranged in an upper cover, and aseptic cotton is arranged on the surface of the filter plate; the beer spear has the beneficial effects that firstly, the connection sealing performance between the beer spear main body and a beer barrel can be improved in cooperation with a plurality of groups of sealing rings, then sterilization liquid can be injected into the sterilization cotton through the sterilization cotton placed in the upper cover, and the sterilization liquid in the sterilization cotton slowly drips into the lower cover through the filter plate in the upper cover; the sterilization liquid can flow into the sealing ring through the through hole by utilizing the flow guide of the inclined plate arranged in the lower cover, so that the contact part of the inner side surface of the barrel cover pipe of the beer barrel and the sealing ring can be conveniently sterilized, the sterilization liquid flows out in a dripping manner and is slow in flowing speed, and the sterilization liquid in the aseptic cotton can be recycled for a long time.

The invention discloses a quaternary ammonium salt composite bactericide capable of efficiently killing fungi and a preparation method of the quaternary ammonium salt composite bactericide. The preparation method comprises the following steps: S1, preparing zinc oxide nanoparticles; s2, adding the prepared zinc oxide nanoparticles into a buffer solution, adding dopamine hydrochloride, and preparing modified zinc oxide after the reaction is finished; s3, adding the modified zinc oxide and 1-vinyl imidazole into N, N-dimethylformamide, and carrying out a reaction for 2 to 2.5 h so as to obtain modified zinc oxide; s4, under the nitrogen atmosphere, adding the modified zinc oxide and 1-bromopentane into cyclohexane, and heating to 50 DEG C to prepare the quaternary ammonium salt composite bactericide; the sterilizing effect of the sterilizing agent is remarkably improved through cooperation of quaternary ammonium salt and zinc oxide nanoparticles, the sterilizing effect of the composite sterilizing agent is remarkably improved through the synergistic sterilizing performance of quaternary ammonium salt and zinc oxide by inoculating imidazole quaternary ammonium salt to the surface of zinc oxide, and the heat stability of the composite sterilizing agent can be remarkably improved through introduced imidazole groups.

The invention relates to the technical field of oil exploitation, and discloses a bactericide and a preparation method thereof.Sodium dodecyl benzene sulfonate, a quaternary ammonium salt modified cardanol polymer and water are added into a stirrer and stirred, and the bactericide is obtained after stirring is finished. Quaternary ammonium salt, pyridine and morpholine in the quaternary ammonium salt modified cardanol polymer all have good bactericidal effects. Pyridine has a strong bactericidal effect and can interfere with cell wall formation, DNA replication and repair and destroy a membrane structure; the morpholine can inhibit the generation of a cell wall membrane; the cardanol group has a better bactericidal effect, and the cardanol reacts with 2, 2-bis (bromomethyl)-1, 3-propylene glycol, so that the substitution degree of the cardanol is improved, and the bactericidal effect of the cardanol is better.

The invention discloses a loose nanofiltration membrane with a slow-release sterilization function and a preparation method of the loose nanofiltration membrane. The nanofiltration membrane can realize slow release and long-acting antibiosis of silver ions. The preparation method of the membrane comprises the following steps: synthesizing UiO-66-NH2 nano particles by a hydrothermal method, mixing the UiO-66-NH2 nano particles with an AgNO3 solution, and reducing by using NaBH4 to prepare Ag-coated UiO-66-NH2 nano particles; the preparation method comprises the following steps: blending Ag-coated UiO-66-NH2 and polybenzimidazole, preparing a PBI-based mixed matrix membrane by using a non-solvent induced phase inversion method, and then crosslinking the PBI-based mixed matrix membrane by using trimesoyl chloride to obtain the biological pollution resistant loose nanofiltration membrane. Test results show that the loose nanofiltration membrane prepared by the method has excellent dye desalination performance and antibacterial performance. The salt retention rate is less than 1% while the crystal violet dye retention rate is kept to be 99% or above. An antibacterial experiment shows that after the membrane is co-cultured for 36 hours, the antibacterial rates of the membrane on escherichia coli and staphylococcus aureus respectively reach 97.4% and 96.3%. Slow-release experiments show that the prepared loose nanofiltration membrane can stably maintain the release amount at 0.1 [mu] g.L <-1 >. Day <-1 >, and can realize long-term effective sterilization.

The invention relates to the technical field of raisin sterilization, in particular to sterilization equipment for raisin production, which comprises a rack and the like, a ship pool is mounted on the rack, the ship pool is used for loading liquid for sterilization, a second mesh belt component for conveying raisin is mounted at the upper part in the ship pool, and a second mesh belt component for conveying raisin is mounted at the lower part in the ship pool. A stirring assembly used for stirring liquid and a heating assembly used for heating the liquid are arranged in the ship pool, an upper cover is fixedly connected to the top of the ship pool, and a feeding assembly is connected to the right portion of the upper cover. The device is provided with the ship pool, the upper cover and other components, raisins fall to the upper portion of the second net belt component through conveying of the first net belt component, then the raisins are soaked in hot water, the hot water in the ship pool can kill most bacteria and yeast, and therefore the raisins are soaked in the hot water, so that the raisins are soaked in the hot water, and the quality of the raisins is improved. And therefore, the problems of scorching caused by insufficient feeding and insufficient temperature of partial areas caused by excessive feeding are avoided.

The invention relates to the technical field of concrete, and discloses high-strength concrete and a preparation method thereof. The concrete comprises the following components: 800 to 850 parts of cement, 150 to 160 parts of glass beads, 100 to 120 parts of mineral powder, 80 to 100 parts of silica fume, 900 to 950 parts of fine aggregate, 8 to 10 parts of a water reducing agent, 10 to 15 parts of chitosan, 20 to 25 parts of acrylamide, 1 to 2 parts of an initiator, 5 to 6 parts of a coupling agent, 1 to 2 parts of a cross-linking agent, 1 to 2 parts of nano silver oxide, 200 to 210 parts of water and 50 to 60 parts of an acetic acid solution. Chitosan and acrylamide are copolymerized to obtain a polyhydroxy copolymer with a three-dimensional network structure, so that the strength of the concrete is improved; the nano silver oxide is loaded on the three-dimensional network copolymer, the nano silver oxide has excellent antibacterial performance, polyhydroxy on the copolymer structure has good oxidability and reducibility, and the antibacterial ability of the silver oxide is synergistically promoted. The concrete prepared by the preparation method disclosed by the invention keeps high strength while having excellent antibacterial ability.

The present invention belongs to the technical field of water purification, and in particular, relates to a water purification device with a sterilization function, including a water purification tank body, a sterilization mechanism fixedly connected to the interior of the water purification tank body, a guide plate fixedly connected to the interior of the water purification tank body, a guide cylinder fixedly connected to the upper surface of the guide plate, a partition fixedly connected to the interior of the water purification tank body, a mixing chamber formed between the partition and the guide plate, and a filtering mechanism fixedly connected to the lower end of the partition. The present invention can effectively handle the heat generated during the dechlorination process, avoid excessive heat damage to the water purification device, and can automatically adjust the amount of neutralizer added. At the same time, the present invention can also reduce the content of harmful substances in the water, and automatically prompt the user to replace the filter after the filter is overused, and automatically raise the filter to facilitate the user to replace, which greatly improves the practicality of the device.

The preparation method comprises the following steps: grinding an iodine block to obtain iodine powder, adding the iodine powder into double distilled water, and carrying out ultrasonic stripping to obtain an iodine nanosheet suspension; under the conditions of stirring and water bath heating, dissolving polyvinyl alcohol with double distilled water to obtain a polyvinyl alcohol solution, adding sodium alginate in batches, and continuously stirring in a water bath to obtain a moldable composite hydrogel precursor solution; dissolving tannic acid by adopting an iodine nanosheet suspension, then adding into the moldable composite hydrogel precursor solution, uniformly stirring at room temperature, adjusting the pH value of the solution to be neutral, finally dropwise adding a borax solution, and stirring into gel to obtain the I2 / PBST moldable antibacterial composite hydrogel. The prepared composite hydrogel not only can play an antibacterial role and reduce the bacterial infection probability of infection sites, but also has excellent properties such as plasticity, stretchability, self-healing property, adhesion and degradability, is convenient to fill defect parts with different shapes, and is firm in adhesion.

The invention relates to the technical field of accessories of nursing products, and discloses a disinfecting and killing device. The disinfecting and sterilizing device is used for disinfecting and sterilizing a massage head of the beauty instrument, and comprises a main structure, the first placing position is arranged on the main structure and used for placing the massage head, a placing groove is formed in the first placing position, and the contact surface of the massage head is located in the placing groove; and the first disinfection and sterilization structure is arranged on the side wall of the placement groove and is used for disinfecting and sterilizing the side surface of the contact surface. According to the disinfection and sterilization device provided by the invention, when the massage head of the beauty instrument is placed at the first placement position of the disinfection and sterilization device, the side surface of the contact surface of the massage head is disinfected and sterilized through the first disinfection and sterilization structure located on the side wall of the placement groove, so that the edge position of the contact surface of the massage head is also disinfected and sterilized; the influence on next use caused by incomplete disinfection and sterilization of the contact surface is avoided.

The invention belongs to the field of handmade soap preparation, and relates to handmade soap capable of deeply cleaning and removing peculiar smell and a preparation method thereof.The handmade soap is prepared from coconut oil, sweet almond oil, red palm oil, horse oil, ammonia water modified silver-loaded activated carbon, zinc diricinoleate, protamine peptide and papain and has the characteristics of being appropriate in hardness, mild in property and soft and dense in foam; the functions of deeply cleaning oil stains and redundant grease, adsorbing and eliminating peculiar smell and inhibiting bacterial reproduction are achieved, and the good skin care effect is achieved.

The invention discloses a process for preparing a multifunctional liquid fertilizer from tylosin waste liquid, and belongs to the technical field of fertilizer preparation. The method comprises the following steps: pretreating the tylosin waste liquid to obtain pretreated waste liquid; adjusting the pH value of the pretreated waste liquid to obtain the pH-adjusted waste liquid; sterilizing and filtering the waste liquid subjected to pH regulation to obtain pure treatment liquid; the pure treatment liquid is subjected to nutrient substance blending, and the multifunctional liquid fertilizer prepared from the tylosin waste liquid is obtained. According to the method, a tylosin degradation catalyst is synthesized in the waste liquid in the pretreatment and pH adjustment processes, tylosin in the waste liquid is degraded in the sterilization process, and soil pollution caused by residual tylosin in the waste liquid is prevented while the steps are shortened; in the blending of the nutrient substances, the acidic substances are added to chelate metal ions, so that the release of the nutrient substances in the fertilizer is delayed, the resource utilization rate is increased, and the fertilizer is worthy of wide-range popularization.

The invention discloses a BCG1059c gene knock-down recombinant bacillus calmette guerin vaccine strain, and the BCG1059c gene of the strain is knocked down. A CRISPRi / dCas9th1 technology is utilized to block RNA polymerase movement in space through a compound formed by crRNA, dCas9 protein and sgRNA at a transcriptional level, so that the expression of the BCG1059c gene in the BCG vaccine is inhibited. The strain has the characteristics of low-abundance polar fat and high-abundance fat arabinomannan compared with wild BCG (Bacillus Calmette Guerin); in an in-vitro experiment, compared with a wild type BCG, the macrophage treated by the BCGkd can secrete IL-2 and TNF-alpha at a higher level, and shows a stronger bactericidal ability on escherichia coli; in an in-vivo experiment, after intravenous injection of a mouse, the survival time of the gene knock-down strain BCGkd in the lung can reach more than 16 weeks, and a more lasting anti-tuberculosis capability can be provided.

The invention belongs to the technical field of sewage purification, and discloses water purification equipment with a sterilization function, which is technically characterized by comprising a box body, a partition plate is fixedly mounted in an inner cavity of the box body, the partition plate divides the inner cavity of the box body into an impurity removal cavity and a water purification cavity, and a filtering mechanism is arranged in the inner cavity of the box body. The filtering mechanism comprises a filter screen, a positioning assembly, a purging assembly, a guide and discharge assembly and a driving assembly, a plurality of groups of ultraviolet lamp posts are arranged on the bottom wall of the water purification cavity, a cleaning assembly matched with the ultraviolet lamp posts is arranged in the water purification cavity, and the cleaning assembly comprises a positioning ring and an adjusting part. Through mutual cooperation of the positioning assembly, the purging assembly, the guiding and discharging assembly and the driving assembly, the filter screen can be controlled to continuously rotate in the impurity removal cavity and the water purification cavity, sewage can be continuously subjected to impurity removal treatment, impurities attached to the surface of the filter screen can be automatically and continuously cleared away, and the filtering effect of the filter screen is effectively improved.