286results about How to "Play an antibacterial role" patented technology

The invention discloses an antibiotic enamel, wherein the glaze-making base formulation includes SiO2 30-50%, Al2O3 5-10%, B2O3 5-20%, Na2O 2-20%, K2O 2-10%, CaO 0-5%, MgO 0-5%, TiO2 0-20%, Zr02 0-10%, ZnO 0-5%, BaO 0-5%, F 1-10%, NiO 0-2%, MnO 20-4%, Fe2O3 0-4%, CuO 0-2%, the added antibacterial agents being Cu, Ag, Sn, Zr, rare earth, Ca, Zn, B, Ba, Ti and their compounds, salts or oxide compounds, the total content being 1-5%.

The invention relates to a degradable magnesium alloy implanting material for bone fixation and a preparing method of the degradable magnesium alloy implanting material. The implanting material is prepared from, by mass percent, 0.5-4% of Mg, 0.5-4% of Ag and the balance Y. The preparing method of the implanting material comprises the steps of ingot casting metallurgy, extruding, rolling and heat treatment. The prepared implanting material meets the requirement of plates, rods and profiles, wherein the plates, the rods and the profiles serve in biological fluid environments. By means of alloy materials, the good comprehensive mechanical performance needed by bone fixing materials is ensured, the beneficial effects of being capable of inhibiting bacteria, resistant to corrosion, free of cytotoxicity, good in biological mechanical property and the like are achieved, and the alloy materials can be degraded under the biological fluid environments. The implanting material can serve as bone nails or marrow nails or bone fraction plates or other various devices to be used under the medical conditions, and the comprehensive performance is good; and especially, the implanting material has both the biomechanical property and the biodegradable performance at the same time, and the typical defect of existing metal materials of a titanium alloy or stainless steel or high polymer materials in application of the department of orthopaedics is overcome.

The invention relates to a medical anti-adhesion agent which comprises carboxymethyl chitosan and equilibrium liquid. The solvent of the equilibrium liquid is water for injection, and the solute of the equilibrium liquid comprises sodium chloride and monopotassium phosphate. The anti-adhesion agent comprises, in weight percent, 0.1%-10% of carboxymethyl chitosan, preferably 0.2%-5% of carboxymethyl chitosan, more preferably 0.5%-4.0% of carboxymethyl chitosan, 0.5%-1% of sodium chloride and 0.1%-2% of monopotassium phosphate. The invention further relates to a method for preparing the anti-adhesion agent. The anti-adhesion agent can be in the form of gel or flushing fluid, is used for preventing postoperative adhesion in general surgery department and gynecology and obstetrics, and can also be used for surgical or trauma flushing. The anti-adhesion agent is non-toxic, non-irritant, biodegradable and free of sensitization, and has fine antibacterial activity and anti-adhesion effects.

The invention discloses a felt proofing method for wool fabrics. The felt proofing method comprises the following steps: preparing felt proofing liquid; soaking the wool fabrics in the felt proofing liquid for finishing; cleaning and drying the finished wool fabrics to obtain felt proofing wool fabrics. The felt proofing method for wool fabrics, provided by the invention, can be used for effectively improving the felt proofing property of the wool fabrics without generating damage to the strength of the wool fabrics, the finishing method is simple and easy to operate, and no toxic substance is released in the finishing process, thereby being conducive to environmental protection.

The invention relates to polyvinyl alcohol / sodium alginate medicine-loading hydrogel dressing having light-responsive bacteria resistance and a preparation method of the polyvinyl alcohol / sodium alginate medicine-loading hydrogel dressing, wherein a macromolecular medicine realizing fracturing under ultraviolet light is distributed inside the hydrogel dressing. The preparation method of the polyvinyl alcohol / sodium alginate medicine-loading hydrogel dressing comprises the following steps: grafting micromolecule antibiotic, namely, levofloxacin to polyethylene glycol macromolecular chains with amino groups at two ends through molecules with ultraviolet light response property, thus obtaining the macromolecular medicine realizing fracturing under ultraviolet light; and carrying out repeated freezing and thawing on a mixed solution of polyvinyl alcohol solution, sodium alginate solution and the macromolecular medicine realizing fracturing under ultraviolet light, thus obtaining the polyvinyl alcohol / sodium alginate medicine-loading hydrogel dressing having light-responsive bacteria resistance. The adopted raw materials have good biocompatibility, the obtained hydrogel dressing has certain mechanical property and has the ultraviolet-light-responsive antibacterial property, namely, the hydrogel dressing can realize controlled release of antibiotics under irradiation of 365nm ultraviolet light, and thus the polyvinyl alcohol / sodium alginate medicine-loading hydrogel dressing is suitable for protecting and treating the wound surface.

The invention discloses a nano silver anti-inflammatory gel for treating gynecologic inflammation and a preparation method thereof. The gynecologic inflammation is a common frequently-occurring disease; and an ideal effect cannot be easily obtained from the traditional therapeutic drug. 1000g of gel is prepared from 100-200 PPM of nano silver powder, 2-3g of camellia oil, 2-3g of eucalyptus oil, 0.002-0.008g of sodium dodecyl sulfate, 10-20g of propolis, 4-6g of carbopol, 4-6g of triethanolamine and the balance of pure water. The nano silver anti-inflammatory gel has excellent curative effect on pathogenic microorganism infective inflammation diseases such as gynecologic inflammation, cervicitis, or mixed infection. The gel disclosed by the invention is directly administered through vagina; and the drug directly achieves the focus of infection, and is explicit in targeting property, concise and convenient. The nano silver anti-inflammatory gel has strong inhibiting or killing roles on various pathogens such as gram positive bacteria, gram negative bacteria, mould, trichomonad and the like by experimental and clinical validation. The nano silver anti-inflammatory gel has good curative effect on colpitis, cervicitis, annexitis and pelvic inflammation caused by lactobacillus, mycete, candida albicans, HPV (human papillomavirus) and the like.

The invention discloses a dyeing and finishing process for modal fabric. The process comprises the procedures of pretreatment, pre-setting, modification treatment, dyeing, soaping, fixation, after-finishing, drying, sizing, calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave, and a step of modification treatment is added; in the dyeing procedure, a base substituent SA is used, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental pollution is avoided, and the requirement of green environmental protection is met; furthermore, montmorillonoid is adopted to carry out modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high. According to the invention, a yellowing-resisting reagent is used in the procedures of pre-setting, sizing and after-finishing, so that the final fabric cannot become yellow easily.

The invention relates to the technical field of medical dressing, in particular to medical and antibacterial cationic biogel dressing and a preparation method thereof. The medical and antibacterial cationic biogel dressing comprises raw materials in percentage by weight as follows: glycerin, chitosan quaternary ammonium salt, amino-acid iodine, organosilicon quaternary ammonium salt, an indigowoad leaf extraction solution, a prunella vulgaris extraction solution, a paniculate swallowwort root extraction solution and the balance of purified water. The antibacterial dressing has a remarkable antibacterial effect, is transparent, high in water content, non-toxic, harmless, nonirritating and good in biocompatibility and adhesion, can isolate bacteria, kill bacteria, fungi and viruses and prevent skin and mucous membranes from infection, can stop bleeding and keep the wound wet and further can promote skin regeneration and healing of the wound. The medical and antibacterial cationic biogel dressing can be widely used for preventing and treating infection of skin wound such as skin bruise, scalding, burning, bedsore, ulcer, vagina skin eczema and the like and local mucous membrane infection of an oral cavity, the throat, gingivae and the like and can relieve pains, inhibit bacteria, protect wound, promote wound healing and inhibit scarring.

The invention relates to a povidone iodine hydrogel antibacterial dressing and a preparation method thereof, and belongs to the field of medicines. In view of deficiencies of the prior art, a purposeof the invention is to provide a povidone iodine hydrogel antibacterial dressing prepared from the following raw materials in parts by weight: 0.25 to 1 part of chitosan, 0. 5 to 3 parts of povidone iodine, 0.5 to 2 parts of propylene glycol, 2 to 6 parts of glycerin, 10 to 20 parts of poloxamer, 2 to 4 parts of acetic acid, and 100 to 120 parts of purified water. The antibacterial dressing can not only make the wound in a humid environment, but also relieves the release of a pharmaceutical effect of the povidone iodine, prolongs the duration of the pharmaceutical effect, has a good antibacterial effect, stability, and a wide application range, has a good therapeutic effect on healing of the wound, promotes skin regeneration, and reduces scar formation.

The invention relates to a chitosan quaternary ammonium salt hydrogel antibacterial dressing and a preparation method thereof, and belongs to the field of biomedicine. The chitosan quaternary ammoniumsalt hydrogel antibacterial dressing is prepared from the following raw materials in parts by weight: 0.1-5 parts of a chitosan quaternary ammonium salt, 0.1-5 parts of an organosilicon quaternary ammonium salt, 1-8 parts of a cellulose derivative, 5-20 parts of glycerol and 80-120 parts of purified water. The chitosan quaternary ammonium salt hydrogel antibacterial dressing provided by the invention has a good antibacterial effect, stability and a wide application range, and has a good therapeutic effect on wound healing.

The invention discloses nutrient water-milled glutinous rice flour and relates to the technical field of food processing. The nutrient water-milled glutinous rice flour is prepared from glutinous rice, brown rice, sweet potatoes, radix paeoniae alba, peach kernel, potatoes, poria cocos, roots of kudzu vine, kelp and Chinese yam. The preparation process comprises the following steps: preparing materials, pre-treating the glutinous rice and the brown rice, pre-treating the sweet potatoes, pre-treating the radix paeoniae alba, pre-treating the poria cocos, pre-treating the kelp, pre-treating the Chinese yam, pre-treating the potatoes, pre-treating the peach kernel and synthesizing the glutinous rice flour. The nutrient water-milled glutinous rice flour disclosed by the invention is relatively high in nutritional value, suitable for preparing various foods, suitable for eating by people of all ages, and further has the healthcare effects of nourishing blood and liver, clearing damp and promoting dieresis, tonifying spleen and soothing heart, reducing blood lipid and blood sugar, tonifying spleen and nourishing stomach, promoting secretion of saliva or body fluid and benefiting lung, tonifying kidney and arresting seminal emission; meanwhile, the food prepared from the nutrient water-milled glutinous rice is moderate in nutrition, easy to eat, soft and smooth in mouthfeel, not easy for decoction muddy while being poached, and the like, and can be used for preparing the food such as sweet soup balls, glutinous rice dumplings and small dumplings, and further can be used for preparing food such as ice cream and cooked fruits.

The invention discloses to a loach traditional Chinese medicine feeding method, and relates to the technical field of loach culturing. The loach traditional Chinese medicine feeding method comprises the following steps of (1) disinfecting a pond; (2) putting loach fries into the pond, wherein the same size of loaches with the length of 5-6cm are put into one pond; (3) feeding the loaches by mixed feed, wherein the mixed feed comprises the following components of 40%-50% of wheat bran, 18%-22% of bean pulp, 8%-10% of cottonseed meal, 10%-14% of fish powder, 6%-8% of blood meal, and 2.5%-3.5% of yeast powder. In the feeding process, a traditional Chinese medicine bag is soaked into the pond, the traditional Chinese medicine bag comprises the traditional Chinese medicines in weight by parts: 20 parts of scutellaria baicalensis, 10 parts of sapium sebiferum, 20 parts of willowleaf hygrophila herb, 20 parts of pomegranate bark, 10 parts of Chinese pulsatilla root, 10 parts of acorus calamus and 20 parts of liquorice; the traditional Chinese medicines are coated by gauze and put into the pond, and 2-5kg of traditional Chinese medicine bags is put per 1000cm<3>. The loach traditional Chinese medicine feeding method has the advantages that the resistant capability of the loaches is improved, the immunity of the loaches is improved, the morbidity rate of the loaches is decreased, the side effect on the loaches is avoided, and the operation is convenient.

The invention relates to an application of magnesium material as oral cavity GTR or GBR membrane material. The magnesium material can adopt magnesium base alloy; no matter from the price of the raw material, or from the preparation of the later-stage material, the cost of magnesium is far lower than that of the existing GTR / GBR membrane available in clinic, so that the production cost and the final treatment expense can be reduced; the density and the elasticity modulus of the magnesium base alloy are far higher than those of the existing absorbable GTR or GBR membrane, therefore, the magnesium base alloy is obviously superior to the traditional GTR / GBR membrane in the aspect of physical barrier, and the loss of the effect of the screening space due to the collapse of the GTR / GBR membrane in the defect area is avoided; and meanwhile, the magnesium base alloy material also has the advantages of low immunogenicity and good antibacterial property.

The invention discloses a method for preventing and treating fruit tree meloidogynosis by adopting a carboxymethyl chitosan protective film, and relates to a formula of a novel biological pesticide for preventing and treating fruit tree meloidogynosis and a preparation method of the novel biological pesticide. The preparation method comprises the steps of: preparing solution A in the weight ratio of water to citric acid to sodium hydroxide to chitosan oligosaccharide citrate of being 100: (8-12): (4-6): (0.5-2); preparing solution B in the weight ratio of water to potassium iodide to iodine to bioactive organic iodine of being 100: (0.3-0.8): (0.15-0.3): (0.01-0.02); preparing solution C in the weight ratio of water to carboxymethyl chitosan of being 100: (4-6); preparing solution D in the weight ratio of water to sodium alginate of being 100: (0.01-0.03); and finally, adding the solution B, the solution C and the solution D into the solution A in sequence. The novel biological pesticide can be used for effectively protecting wounds and promoting wound healing when the root systems of fruit trees have wounds because of grafting, meloidogynosis tumor removal and the like.

The invention discloses a medical grade gas-permeable membrane special material. The medical grade gas-permeable membrane special material is prepared from the following components in parts by weight: 35-75 parts of nanoscale activated composite inorganic mineral powder, 2-6 parts of nano rutile type titanium dioxide, 0.2-2.0 parts of fluorine-containing polymer, 38-78 parts of gas-permeable membrane special resin, 0.5-1.2 parts of antioxidant and 1-2 parts of specially treated aloe juice extract powder or arbutin extract powder, wherein the nanoscale activated composite inorganic mineral powder comprises nanoscale ground calcium carbonate powder, nanoscale talcum powder and a surface active agent. A preparation method of the medical grade gas-permeable membrane special material comprises the following steps: firstly carrying out high-speed mixing on the nanoscale activated composite inorganic mineral powder for removing water; secondly, preparing a gas permeable membrane special material mixture; and thirdly, preparing a gas permeable membrane special material finished product. The medical grade gas-permeable membrane special material has the advantages that raw materials are simple, source of the raw materials is rich, a technology is simplified and cost is low.

The invention discloses zeolite-loaded and vanadium ion-doped titanium dioxide antibacterial paper and a preparation method thereof. The method comprises the following steps of: mixing tetra-n-butyl titanate, absolute ethanol and water solution of hydrochloric acid; adding tripropamol vanadyl in the mixture; sieving natural zeolite, adding the sieved natural zeolite into the mixture and stirring and mixing uniformly; dropping distilled water until the gel is formed; drying, calculating and grinding to obtain loaded zeolite; mixing the loaded zeolite of which the weight is 2.5-10 percent of oven dry stock with pulp for producing paper in the pulp; producing the antibacterial paper by using a papermaking process flow; or dispersing the loaded zeolite of which the weight is 3.3-10 percent of pigment for coating cloth, adding a coating assistant to form a coating, and then coating and drying on a coating machine of a papermaking machine to obtain the antibacterial paper. With a vanadium ion-doped method, the response effect of titanium dioxide under visible light can be improved; and by using the zeolite with excellent adsorption performance as a carrier, the sterilizing performance of the antibacterial paper can be remarkably improved.

The invention provides an electronic device shell, which comprises a substrate, a metallic texture layer formed on the surface of the substrate and a finishing coat layer formed on the surface of the metallic texture layer, wherein the finishing coat layer contains nanometer titanium dioxide and fluorocarbon resin.

The invention discloses a production method of enteric-coated kitasamycin for feed, which comprises the following process steps: step one, the preparation of drug-loaded pellets; step two, inner layer sustained-release coating of the drug-loaded pellets, which prolongs the release and acting time of kitasamycin; and steps three, outer layer enteric coating of the drug-loaded pellets, which ensures the release in succus entericus and small or no release in gastric juice. The method has the advantages that the kitasamycin is subjected to pellets pelletizing and 99 percent of the prepared granulums can pass through 24 meshes, so the dust is greatly reduced and the fluidity is increased; the coating of the inner layer sustained-release agent (HPMC) prolongs the release and acting time of the kitasamycin, reduces medication times and reduces the medication cost; and a layer of enteric substance, namely acrylic resin-III is sprayed and coated on the outer layer of particles. The substance protects the kitasamycin which is a weakly alkaline antibiotic from being damaged by gastroc acid in stomach, quickly disintegrates after entering enteric canal and releases the kitasamycin; and then the kitasamycin is absorbed by gastrointestinal mucosa into blood drug to play a role of restraining the reproduction of pathogenic microorganism and preventing diarrhea. Insoluble in the stomach, kitasamycin coating formulations have no pessimal stimulation on the stomach, and cannot result in regurgitation and vomiting. In addition, the sustained-release formulation, namely the kitasamycin prolongs the acting time so the medication times is reduced, the medication cost of farmers is reduced, and the economic benefit is improved.

The invention discloses a method for radio frequency sterilization of a low water activity food, and belongs to the technical field of food processing. According to the method disclosed by the invention, a radio frequency treatment manner is used for replacing a conventional sterilization treatment method, and the method disclosed by the invention comprises the following steps of performing sealed packaging on the low water activity food, placing the low water activity food after being subjected to sealed packaging between pole plates of a radio frequency device, and performing sterilization by combining ultraviolet activation with radio frequency; and the method also comprises the following step of combining radio frequency treatment with hot air, intermittent turning over and mixing, so as to improve the heating uniformity. The method adopts the technical scheme comprising the following steps of performing sealed packaging on the low water activity food with a nanometer titanium dioxide antibacterial PE bag, placing the low water activity food loaded in the nanometer titanium dioxide antibacterial PE bag in the center of a bottom pole plate of a radio frequency treatment chamber for radio frequency treatment, then performing quenching treatment on samples after being subjected to radio frequency treatment, and performing microorganism counting. According to the sterilization method disclosed by the invention, microorganisms in the samples can be effectively killed under the premise that the quality of the samples can be maintained.

The invention relates to the field of decoration materials, in particular to a tile with photocatalyst antibacterium effects, which substantially comprises a tile, a protecting layer and a photocatalyst coating. Due to the fact that the photocatalyst coating can carry out oxygenolysis to various organic compounds and part of inorganics, first the protecting layer which has no damaging effect on the tile is sprayed on the tile, and then the photocatalyst coating is coated. A layer of nanometer film is formed after a TiO2 photocatalyst is sprayed on the surface of a base material of the tile, reactive oxygen and oxy-hydrogen free radicals are generated under the irradiation of sunlight ultraviolet and enable pollutants including oil stain and bacteria and the like which are attached to the tile to be forcefully resolved into carbon dioxide and water, adhesion of the dirt and the dust to the surface is greatly reduced, the antibacterium effect is achieved, and indoor air is purified.

The invention discloses a preparation method of an anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material. The preparation method comprises the following steps: (1) preparing an anti-protein unit; (2) preparing hydroxylated graphene; (3) preparing waterborne polyurea; (4) preparing the anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material. According to the preparation method disclosed by the invention, the strength of waterborne polyurea coating can be improved through grafting the hydroxylated graphene and the coating material also can have a certain antibacterial effect; the anti-protein unit is introduced and marine fouling can be prevented from being attached on the surface of a ship, so that the service life of the ship is effectively prolonged; the waterborne polyurea is a novel green and environment-friendly material and has the advantages of easiness for purification, low cost, no toxicity,no irritation, non-combustibility and the like. The anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material prepared by the method provided by the inventionhas excellent mechanical properties, is used for preventing the attachment of the marine fouling and has no harm to the environment, so that the anti-corrosion, antifouling and anti-protein waterborne polyurea grafted graphene coating material can be applied to the aspect of marine antifouling coating.

The invention discloses antibacterial monomer-containing repairing composite resin for dentistry and a preparation method thereof. The composite resin comprises 1-25% of bisphenol A-glycidyl methacrylate, 1-20% of carbamic acid ester dimethacrylate, 4-15% of triethylene glycol dimethacrylate, 1-10% of methylacryloyl oxygen dodecylpyridinium bromide, 55-80% of silicon dioxide, 0.5-1% of camphorquinone and 0.5-1% of N, N-dimethylamino ethyl methacrylate. The methylacryloyl oxygen dodecylpyridinium bromide in the composite resin is an antibacterial bonding monomer synthesized from antibacterial quaternary ammonium dodecylpyridine and polymerizable methylacryloyl groups and can be polymerized with other monomers, so that the composite resin has an antibacterial effect, and the bonding effect between the resin and teeth can be enhanced.

The invention relates to a nanometer silver antibacterial biliary duct bracket and a preparation method thereof. The nanometer silver antibacterial biliary duct bracket belongs to a medical appliance, in particular to a medical biliary duct bracket for human bodies. The nanometer silver antibacterial biliary duct bracket comprises a plastic biliary duct bracket, wherein a nanometer silver deposition layer with the nanometer silver particle size being 0.5 to 200cn is uniformly attached on the inner and outer wall surfaces of the plastic biliary duct bracket. Compared with the prior art, the nanometer silver antibacterial biliary duct bracket has the advantages that the attaching of the stable nanometer silver coating on the existing medical bracket can be realized, silver ions are continuously released for realizing the antibacterial effect on intestine liquid, the secondary infection is prevented, in addition, the problem of medical bracket blockage is avoided.

The invention discloses nano silver-containing trimolybdate and a preparation method and use thereof as an antibacterial agent. The molecular formula of the silver-containing trimolybdate is (NH4)2-xAgxMo3O10, wherein x is equal to 0.58, and the silver-containing trimolybdate is a nanowire. The silver-containing trimolybdate is prepared by reacting ammonium heptamolybdate tetrahydrate with a silver salt in water. The invention also discloses the use of the silver-containing trimolybdate nanowire as the antibacterial agent. The use of the silver-containing trimolybdate nanowire as the antibacterial agent, which is disclosed by the invention, does not require grinding. The silver content in silver-containing trimolybdate is high, so the required amount for achieving the same antibacterial effect is small; meanwhile, the molybdenum compound also has an antibacterial function, oxy-acid radicals containing a positive hexavalent molybdenum element in the solution also have certain oxidability, and thus, the molybdenum element can promote the antibacterial effect of the silver ions; therefore, the nano silver-containing trimolybdate has double antibacterial effects, and the antibacterial capacity of the nano silver-containing trimolybdate is 1,000 times that of a micrometer antibacterial agent. The preparation method disclosed by the invention is simple, has low equipment condition requirements, reduces reaction time and is suitable for large-scale production.

The invention discloses an levigated glutinous rice flour, and relates to the technical field of food processing. The levigated glutinous rice flour is prepared through glutinous rices, high-oil corns, brown rices, potatoes, sword beans and green beans. The preparation process includes material preparation, glutinous rice and brown rice preprocess, potato preprocess, high-oil corn preprocess, sword bean preprocess, green bean preprocess and glutinous rice flour synthesis. The levigated glutinous rice flour has high nutritional value, is adaptable to produce various foods, has the advantages of moderate revitalizing performances, easiness for eating, soft and smooth in taste and no muddy soap, can be applied to preparing foods of sweet dumplings, nuomichi, small balls and the like and can be further applied to preparing foods of ice creams, fruit soups and the like.

The invention discloses a multifunctional protective liquid for paper-based material printed matters, which includes, by mass, 0.2-2.0% of a nano oxide, 0.01-1.0% of a dispersant, 1.0-5.0% of a cellulose-type organic substance, and 92.9-98.79% of a solvent, the sum of the mass percentages of all the components is 100%. An application method includes the steps of: uniformly mixing a dispersion liquid of the nano oxide with the cellulose-type organic substance and directly coating the surface of the paper printed matters with the mixture; or firstly coating the surface of the paper printed matters with the cellulose-type organic substance, naturally drying the paper printed matters in air, and then coating the paper printed matters with the dispersion liquid of the nano oxide. The multifunctional protective liquid is prepared with the nano oxide, the cellulose-type organic substance, the dispersant, and the solvent ethanol as main raw materials and is used for the paper-based material printed matters. The multifunctional protective liquid has simple formula, is environment-friendly and toxic-free and has good pre-protective effect on the paper printed matters.

The invention discloses an indoor foliage plant soilless culture substrate and a preparation method thereof, and relates to the technical field of soilless culture substrates. The soilless culture substrate is prepared from 65-75 parts of perlite, 45-50 parts of medical stone, 25-35 parts of sustained release particles, 15-20 parts of antibacterial component and 70-75 parts of water. The soillessculture substrate has good gas permeability, antibacterial properties, and strong water retention and fertilizer retention ability, and is not easy to harden.

The present invention discloses a bone repair material constructed by 3D printing, a preparation method and an application thereof. The bone repair material is composed of an inner core structure comprising an inner layer portion and a peripheral portion, an outer layer structure, and an anti-micro-organism spraying coating layer. The 3D printed bone repair material realizes combination of a degradable and bone growth-inducing material and engineering plastics with excellent mechanical properties, and ensures strength of the bone repair material by optimizing the structure. An outermost layeris sprayed and coated with self-made mixed powder of hydroxyapatite containing trace elements and silver, which promotes bone healing and also imparts certain anti-micro-organism properties. In addition, shaping of the bone repair material is realized by means of 3D printing with double spraying nozzles, and the preparation method saves complicated processes of traditional processing processes, also improves accuracy, achieves personal molding and enables the bone repair material to be more in line with clinical requirements.

The invention discloses a method for preparing a multifunctional nano silver solution. A nano silver solution with the grain diameter of 20-100nm is carried by utilizing a surface modified tourmaline particle. The preparation method has simple process, mild reaction condition and lower preparation cost and meanwhile has the characteristics of broad-spectrum antibacterial property, anion release performance, favorable water absorptivity, and the like. The invention can be widely applied to a hygienic product and an appliance for daily life.

The invention relates to antibacterial, antiviral and anti-fog coating sol, goggles and a preparation method. The sol comprises inorganic photocatalyst sol, a leveling agent, a binder and a thickener.The inorganic photocatalyst sol is prepared from the following raw materials: a precursor, a complexing agent, an acid catalyst, water, an organic solvent and antibacterial ions. The prepared antibacterial anti-fog goggles have excellent antibacterial and anti-virus functions. Tests show that the antibacterial rate of escherichia coli and staphylococcus aureus can be up to 99% or above; the antiviral activity rate on H1N1 and H3N2 is as high as 99% or above; the anti-fog effect is excellent, the antibacterial anti-fog film layer coated on a prepared lens substrate is mainly made of an inorganic photocatalyst material, which has an antibacterial effect under the action of light and no light, meanwhile, the prepared goggles have high light transmittance, the light transmittance is as high as 95% or above, and the use requirements of medical goggles are met.