64results about How to "Regulate permeability" patented technology

The invention relates to health food for enhancing human immunity and increasing bone mineral density and a preparation method thereof; the health food of the invention comprises the following components: hyaluronic acid, glucosamine, collagen, kudzu root extracts, chondroitin sulfate, vitamins, calcium, etc; because of the embedding processing of hyaluronic acid, the defect of property change of hyaluronic acid due to moisture absorption and influence of environmental factors is overcome; the health food prepared by the organic combination of the embedded hyaluronic acid with glucosamine, collagen, plant extracts, vitamins, mineral matter and the like has functions and effects which can supplement each other, has the effects of lubricating joints, increasing bone mineral density, and enhancing bone strength during long-term administration, and also has the functions of delaying aging, removing freckles and beautifying faces, and the like; the health food of the invention can be prepared into powder, granules, tablets, capsules, is convenient for carrying and taking, has stable and lasting efficacy, has no side effects, and is an ideal health food of patients with hypoimmunity and osteoporosis.

The invention relates to a method for carrying out profile control on a fracture-type oil reservoir, which comprises the following steps of injecting 0.1 to 0.3 percent of zwitterionic polymer solution into an oil layer; suspending and carrying expansion-retarding 0.2 to 1.0 percent of salt-resistance high-intensity water-absorbent resin particles by a zwitterionic gel profile control agent and injecting the obtained product into a fracture of the oil layer; injecting 30 to 50m<3> of acrylamide gel; suspending 0.2 to 0.5 percent of water insoluble solid particles by the zwitterionic gel profile control agent and injecting the obtained product into the fracture; and alternately injecting 1,000m<3> of partially hydrolyzed polyacrylamide solution with a molecular weight of 15 million, degree of hydrolysis of 10 to 20 percent and 1,000m<3> of petroleum sulfonate surfactant solution, wherein the concentration of the hydrolyzed polyacrylamide solution is 0.05 to 0.15 percent and the concentration of the petroleum sulfonate surfactant solution is 0.2 to 0.5. According to the method, profile control and flooding effects of the fracture-type oil reservoir can be improved; water content of a fracture main direction oil well is reduced; and yield of crude oil of a fracture side direction oil well is increased.

The invention discloses a fault analog simulation material used for a fluid-solid coupling model test, which comprises components in parts by weight as follows: 1 part of quartz sand, 0.05-0.25 part of talcum powder, 0.05-0.15 part of gypsum powder, 0.08-0.2 part of Vaseline and 0.1-0.2 part of water. The material adopts gypsum as a cementing agent, so as to achieve simulation for fault fluid-solid coupling characteristics; the talcum powder and the quartz sand are adopted as conditioning agents to regulate the weight of the material; and the Vaseline is adopted as a water resistant agent to regulate permeability of the material, simultaneously adopted as a plastic cementing agent of the material, and used for simulating the fault fluid-solid coupling characteristics under different permeability conditions, and real-time comparison with surrounding rock fluid-solid coupling characteristics in the same experiment is achieved. The fault analog simulation material in the fluid-solid coupling model test disclosed by the invention can regulate the strength and the permeability of the material within a larger range, and simulate various types of faults at various levels of intensity.

The invention discloses a fluid-solid coupling similar material for a model test. The material consists of the following raw materials in part by weight: 1 part of standard sand, 0.05 to 0.15 part of barite powder, 0.05 to 0.15 part of talcpowder, 0.05 to 0.125 part of cement, 0.04 to 0.12 part of vaseline, 0 to 0.15 part of silicone oil and 0.05 to 0.1 part of mixing water. Hydraulic cement and non-hydrophilic vaseline are taken as cementing agents in the material, so that the problem that the similar material is softened and disintegrated when meeting water is solved, and the strength and elastic modulus of the material can be adjusted in a wide range; the silicone oil is taken as an adjuster, so that the water physical indexes such as permeability and the like of the material can be adjusted under the condition that the mechanical indexes of the material are basically not influenced, and the physical and mechanical properties and water physical properties of the material can meet the test requirement; and compared with previous research, the invention has the advantages that: the intercoupling effect of a rock body and water is truly simulated, and the obtained geomechanical similar model test research result is more accurate.

The invention discloses fertilizer special for longan and litchi and a production method of the fertilizer. The fertilizer is prepared from inorganic fertilizer, organic matter, secondary elements, microelements, flowering accelerant and pest repellents. The fertilizer is prepared from, by weight, larger than or equal to 30% of total nutrients (N+P<2>O<5>+K<2>O), larger than or equal to 8% of the organic matter, 0.1%-0.5% of the secondary elements, 0.04%-0.1% of the microelements, 0.04%-0.1% of plant growth regulator and 0.5%-3% of the pest repellents, wherein the GB18877-2009 organic-inorganic compound fertilizer national standard can be referred to for the representation notation. After the special fertilizer is applied, the root systems of the litchi and the longan are deep and developed, blooming is early, the fruit setting capacity is high, and meanwhile the pest repellents are contained, so that damage, caused by smelly fart insects and soil insects, to the roots is effectively prevented and controlled, the yield is raised, and the quality is improved.

The invention discloses moisturizing lotion for repairing skin barriers and resisting free radicals. The moisturizing lotion comprises, in weight percent, 2%-6% of polyhydric alcohols, 0.2%-3% of thickening suspending agents, 1%-5% of natural squalane, 2.5%-4.5% of emulsifying agents, 0.1%-3% of ceramide NP, 0.1%-5% of nicotinamide, 0.1%-2% of lycopene, 0.5%-3% of grape seed extracts, 0.1%-1% of ferulic acid, 0.1%-2% of coenzyme Q10, 0.1%-2% of vitamin E and the balance water. By the aid of the proportion and combination of different components, a novel local treatment formula can be developedaccording to skin lesion relevant to a plurality of cuticles and skin damage and resistance of the free radicals. The components in the formula are necessary components forming skin permeability barriers and have synergistic interaction between antioxidant components, the skin barriers can be repaired, protection films are formed on the surfaces of skins, the moisturizing lotion resists oxidationand the free radicals, damage of external factors to the skins is avoided, transepidermal water loss rate is effectively reduced, and the moisturizing lotion has good moisturizing effects on the skins.

The invention relates to an adjustable fluid-solid coupled similar material for a model test and a preparation method of the adjustable fluid-solid coupled similar material. The adjustable fluid-solid coupled similar material is prepared from the following raw materials in parts by weight: 1 part of standard sand, 0.05-0.16 part of calcium carbonate, 0.05-0.18 part of barite powder, 0.02-0.08 part of cement, 0.1-0.14 part of water, 0-0.04 part of silicone oil and 0.07-0.15 part of chlorinated paraffin. The preparation method comprises the steps of mixing the four fine-grain materials including standard sand, calcium carbonate, barite powder and cement, and uniformly stirring the four materials; adding water and uniformly stirring; heating chlorinated paraffin to 45-60 DEG C, and adding the heated chlorinated paraffin into the mixed material; adding a regulator, namely the silicone oil, and uniformly stirring. The index of physical property and the index of mechanical property can be adjusted through adjusting the proportion of the materials on the premise that the whole performance of the materials is not affected, so that the possibility for simulating different kinds of rock masses with different osmotic coefficients is provided; the strength and osmosis of the similar material can be adjusted within a relatively wide range, and various kinds of rock masses with medium and low strengths can be simulated.

The invention relates to a similar material for a fault mud burst model test and a preparing method thereof; the similar material comprises the components by weight: 1 part of a talcum powder, 2-7 parts of sand, 0.8-1.6 parts of gypsum, 0.2-0.6 part of bentonite, 0.01-0.4 part of liquid paraffin, and 0.2-0.7 part of mixing water. The preparing method comprises the steps: according to the proportion, weighing the talcum powder, sand, gypsum, bentonite and liquid paraffin; mixing evenly the talcum powder, sand, gypsum and bentonite in a stirrer; adding the mixing water, and fully stirring; adding the liquid paraffin and stirring; putting the mixed material into a molding die, and carrying out compaction molding; placing the molded material in a ventilated dry place for 24-36 h, and thus obtaining the similar material for the fault mud burst model test. The similar material can be slowly weakened and disintegrated under a water action, the disintegration performance can be changed through changing the composition, and a possibility is provided for fault mud burst in a process of real simulation of tunnel excavation.

The present invention discloses one kind of health product with auxiliary antilipemic function and its preparation process. The health product is prepared with black edible fungus extract 30-50 weight portions, ginkgo leaf extract 30-50 weight portions and fish oil 900-1000 weight portions as well as conventional supplementary material. It is prepared into oral preparation, and has obvious health functions of lowering blood fat, delaying senility, resisting oxidation, etc.

The invention discloses a beauty-maintaining herb tea which is prepared from the following raw materials in parts by weight: 5-8 parts of chrysanthemum bud, 5-6 parts of honeysuckle, 10-12 parts of rose, 5-8 parts of wolfberry fruit, 8-10 parts of longan, 3-4 parts of lemon slice, 3-5 parts of dandelion leaf and 8-10 parts of liquorice. A preparation method of the herb tea comprises the following steps: fully drying the raw materials in parts by weight, grinding, mixing and matching with green tea at the same proportion to obtain a finished product. The beauty-maintaining herb tea disclosed by the invention has the efficacies of clearing heat, discharging toxin and maintaining beauty when being taken orally; the preparation method is simple and low in cost and is suitable for large-scale industrial production.

The invention provides a waterborne nitrocotton brightener which comprises the following components: in parts by weight, 50-150 parts of nitrocotton, 8-45 parts of an emulsifier, 30-100 parts of a plasticizer, 0.2-5 parts of rosin resin, 300-700 parts of mixed solvents and 200-600 parts of water, wherein the mixed solvents comprises a first solvent and a second solvent, the first solvent comprises butoxyethyl acetate, and the second solvent comprises one or more of Isooctyl acetate, n-butyl acetate and butyl cellosolve. The brightener adopts the mixed solvents containing butoxyethyl acetate, and butoxyethyl acetate is not only more flexible than other solvents, but also is helpful for product dilution stability at the same time; meanwhile, the rosin resin can adjust the permeability of the brightener, therefore, the product brightness is further improved.

The invention discloses biodegradable chitosan-based hydrogel and a preparation method thereof. The biodegradable chitosan-based hydrogel comprises, by weight, 65-100% of N-succinyl-chitosan and 0-35% of hyaluronic acid. The preparation method comprises the following steps of respectively dissolving the N-succinyl-chitosan and the hyaluronic acid in deionized water according to a mass ratio of N-succinyl-chitosan to deionized water of 1: 80-100 and a mass ratio of hyaluronic acid to deionized water of 0.5: 100, and carrying out full stirring at a room temperature for 1-5min to mix the two solutions so that the biodegradable chitosan-based hydrogel is formed. The preparation method has simple processes and mild reaction conditions, does not utilize any cross-linking agent and prevents toxic and side effects caused by the cross-linking agent in clinical use. The biodegradable chitosan-based hydrogel is stable for a long time, can be used in fields of drug carriers and biological tissue engineering and has a wide application prospect.

The invention discloses a stem cell exosome microneedle patch for removing freckles and wrinkles. The stem cell exosome microneedle patch comprises a microneedle and a waterproof backing layer for fixing the microneedle, wherein the microneedle is obtained by curing a needle tip solution and a needle body solution, the needle tip solution comprises a stem cell exosome, astaxanthin, trehalose, chitosan, bovine serum albumin and a phosphate buffer solution; and the needle body solution is prepared from PVP K30, PEG 400, squalane and sterile water. The microneedle patch disclosed by the inventioncan penetrate through a skin cuticle barrier, a novel administration path is provided for macromolecular drugs, and the problem of transdermal absorption of an exosome repair solution is solved. Themicroneedle patch can slowly release exosome repair solution, so that the absorptivity of an organism is improved. The microneedle patch has good puncture property, solubility and biological activity,is simple to operate and easy to store, and can be produced on a large scale.

The invention discloses a fermented soybean meal production process suitable for large-scale production and belongs to the technical field of soybean meal processing. The process comprises the steps of mixing tryptone, glucose, yeast extract and sodium chloride, sterilizing at high temperature, adding less-root rhizopus oryzae into a seed culture medium for culturing and preparing a seed culture medium; mixing bean meal, bran, sucrose and glycine betaine, adding water and uniformly mixing; sterilizing at high temperature and naturally cooling to prepare a fermented culture medium; inoculating the seed culture medium into the fermented culture medium and fermenting for culture; adding a glycine betaine solution in a spraying manner after fermenting, and stopping fermenting after spraying; drying and grinding; drying a fermented product, grinding and sieving to obtain a fermented bean meal finished product. According to the process, seed enlarged cultivation is performed, and stability of a production technology is realized; the glycine betaine is added in fermentation to increase the mixing uniformity of the materials; single less-root rhizopus oryzae strains are adopted to ferment the bean meal, so that the fermentation contamination probability is greatly reduced; the process is mature and stable and suitable for large-scale production.

The invention discloses a new Akkermansia muciniphila 139 strain. The strain is collected in the China General Microbiological Culture Collection Center with a collection number of CGMCC No. 16758, and a collection date is November 21st, 2018. The invention also discloses a purpose of the strain. Through separation and authentication, a new strain, i.e., the Akkermansia muciniphila 139, of Akkermansia muciniphila is obtained, the strain can carry out fermentation in vitro to generate a great quantity of short chain fatty acids, and the intestinal health of a host can be maintained. The fermentation in vitro of supernatant can induce the differentiation of mice lymphocyte regulative T cells, and the immunologic function of the host is enhanced. In addition, the bacteria strain also can alleviate enteritis, especially DSS (dextran sulfate sodium)-induced chronic enteritis, and also has a probiotic function.

The invention belongs to the technical field of toothpaste preparation, and particularly relates to antiallergic photocatalyst whitening toothpaste and a preparation method thereof. The toothpaste comprises the components of a photocatalyst, bioactive glass, an abrasive, a foaming agent, a thickening agent, a moistening agent, a coloring agent and a solvent, wherein the photocatalyst and the bioactive glass are synchronously added to the formula; the photocatalyst is capable of performing oxidization under the effect of visible light so as to rapidly whiten teeth; the bioactive glass is in contact with saliva to form an alkaline environment in which calcium and phosphonium ions can be released to form hydroxyapatite protecting membranes on the surfaces of the teeth, so that demineralizedteeth can be mineralized again, dentinal tubule exposed from the teeth due to the corrosion of acidic substances produced by the photocatalyst can be closed, and the stimulus of outside to dental nerve can be avoided, and as a result, the rapid antiallergic effect can be realized while the whitening is achieved; and the potassium ions released by the bioactive glass are capable of adjusting the transmittance of the dentinal tubule, and the stimulus of the outside to pulp nerve through the dentinal tubule can be reduced, and thus hemodia can be further treated.

The invention relates to a water-soluble personal lubricant, a preparation method thereof, and a condom employing the lubricant. The water-soluble personal lubricant is prepared from the following components by weight percent: 20-40% of glycerol, 1-5% of tween-20, 0.02-0.2% of sodium hyaluronate, 0.2-0.8% of rose essential oil, 0.5-1.5% of aloe essential oil, 0.5-2% of pharmaceutical-grade water-soluble azone and the balance of water. The personal lubricant can be mutually dissolved with normal secretion of a human body, and is free of greasy feeling, and consistent with a pH value of a normal physiological environment of a female vagina; improvement of sex joy is also facilitated besides a good lubricating effect; nutrient substances required by the skin are supplied; woman health is also facilitated.

Belonging to the technical field of chemical adhesives, the invention relates to an environment-friendly high performance waterborne epoxy woodworking glue. Specifically, a component A is composed of emulsified epoxy resin, a modifier, a thickener and water; and a component B is a modified amine curing agent. All the used epoxy resin, modifier, thickener and modified amine curing agent are non-toxic or basically non-toxic. The material has the characteristics of high bonding strength, good tear resistance, good flexibility, good permeability and fast film forming speed. The fastest dry curing can be achieved within 40min-1h (depending on humidity) at 25DEG C. The glue can be applied to brush coating at -5DEG C, and the highest strength can be reached in 7 days. The glue is waterborne, green and environment-friendly, can be diluted with water, and is convenient for gluing. Gluing machines and tools can be washed with water. The glue can be used for bonding of wood, cement boards, PVC, expanded polystyrene and other materials.

The invention discloses a culture medium for increasing a bacteria specific content in escherichia coli of a plasmid DNA (Deoxyribonucleic Acid) content, relating to the field of biomedical sciences. Each litre of the culture medium contains the following components: 5 g of yeast powder, 5 g of peptone or beef extract, 9 g of sodium chloride, 10 ml of glycerinum, 5 g of lactose, 1 g of citric acid, 10 g of disodium hydrogen phosphate, 0.2 g of sodium hyaluronate, 3 g of ammonium sulphate, and 12 g of calcium chloride. The content of the peptone or beef extract is reduced on the basis of the original LB (Luria-Bertani) culture medium; 9g of sodium chloride is added into 1 L; a cell isotonic culture solution is obtained; calcium chloride is used for reducing bacteria settlement, assisting to stop bacteria flocculation and mutually inhibiting growth; a slight anaerobic environment is set up by introducing a part of CO2 in the culture medium, so that the tolerance of escherichia coli is increased; by means of addition of hyaluronic acid and ammonium sulphate, the membrane permeability is adjusted; diffusion and operation of water electrolytes are kept; and a cell metabolism microenvironment is provided.

The invention discloses mineral water-soluble composite fertilizer.The fertilizer is prepared from, by weight, 45-50 parts of ammonium nitrate, 12-15 parts of monopotassium phosphate, 32-38 parts of potassium nitrate, 22-25 parts of potassium carbonate, 15-25 parts of ammonium sulfate, 10-30 parts of technical-grade ammonium phosphate, 25-35 parts of potassium sulphate, 6-8 parts of biochemical fulvic acid, 1-2 parts of zinc sulfate, 3-5 parts of boric acid, 3-6 parts of trace element mixture and 5-8 parts of active superfine mineral powder.The mineral water-soluble composite fertilizer provides comprehensive balanced nutrients for growth and development of crops, the soil environment can be improved, and growth and development of crops are greatly promoted.

The invention comprises the preparation of a self-distribution seepage-regulation polymer and a self-distribution seepage-regulation water-controlling acidifying technology. The preparation of the regulation polymer comprises the steps of: adding 5-15 parts by mass of dimethyl diallyl ammonium chloride monomer, 2-8 parts by mass of acrylate monomer, 1-8 parts by mass of crylamide monomer, and the balance deionized water into a reaction vessel in turn; stirring the mixture; keeping the mixture at a constant temperature; introducing nitrogen to remove oxygen; adding a solid initiator which accounts for 0.2-0.8% by weight of the total mass; and allowing the obtained mixture to react for 7-9 hours under normal pressure. The self-distribution seepage-regulation water-controlling acidifying technology comprises the steps of preparation of a pad fluid, preparation of a cleaning agent, and performance of water-controlling acidifying construction. The preparation of the pad fluid comprises the steps of adding 0.2%-5% by weight of the self-distribution seepage-regulation polymer, 3%-15% by weight of hydrochloric acid or mud acid, and 0.5%-2% by weight of a corrosion inhibitor to clear water; and stirring the mixture uniformly under normal temperature and pressure. The preparation of the cleaning agent comprises the step of adding 2%-3% by weight of KCl brine to 20m3 of 1% by weight of a nonionic surfactant. The performance of water-controlling acidifying construction comprises the steps of washing a well in forward and reverse directions by running a tubing string; washing an oil reservoir wherein the pad fluid is injected under the pressure of less than70% of an oil reservoir fracture pressure; injecting a routine acidifying liquid and closing the well.

The invention discloses a preparation method of a hydroxyl acrylate emulsion for waterborne wood paint. The method comprises the following steps: using a core-shell synthesis technique, firstly generating a soft core with very small particle size by adopting microemulsion polymerization, and then polymerizing a layer of hard shell with a room-temperature self-crosslinking function; wherein the hydroxyl-containing function can be uniformly or emphatically distributed in the core and the shell layer as required, and the monomer composition of the shell layer contains a proper amount of functional monomer diacetone acrylamide capable of carrying out room-temperature self-crosslinking and is matched with adipic dihydrazide to carry out room-temperature self-crosslinking; the obtained product has the characteristics of small particle size, high transparency, good polishability, good hardness and good tolerance, and is suitable for being used as single-component or double-component wood paint, especially varnish primer.

The invention discloses a liquid cooling flash-freezing device and method for fresh keeping of meat products. The liquid cooling flash-freezing device comprises a low-temperature flash-freezing liquid circulating pond, a microwave-assisted freezing device, a controller and low-temperature flash freezing liquid circulated in the low-temperature flash freezing liquid circulating pond, wherein the low-temperature flash freezing liquid circulating pool comprises a precooling pond and a flash freezing pond, the precooling pond and the flash freezing pond are connected through circulating pump pipes to form a circulating system; the microwave-assisted freezing device is provided with magnetrons and a microwave resonance cavity, wherein the magnetrons are mounted on a mounting plate and connected with the controller; the microwave resonance cavity is connected with the magnetrons; the low-temperature flash freezing liquid mainly consists of the following substances in percentage by mass: 15-20% of sodium chloride, 15-20% of ethanol, 5-10% of glucan, and the balance of distilled water. According to the low-temperature flash freezing device for the meat products, the flash freezing liquid and the flash freezing device are in cooperating operation, so that the condition that nutrients of frozen meat products run off under the condition that the frozen meat products are stored for a long term can be reduced, and the suitable targets comprise the meat products including common pork, beef, mutton and the like.

The invention provides a natural organic-inorganic combined antifreeze preparation and a production method thereof. According to the invention, phosphorus-and-potassium-containing substances, seaweedextract, fish protein, chitosan, proline, multivitamins, boron-containing substances and zinc-containing substances are used as raw materials; the phosphorus-and-potassium-containing substances, the seaweed extract, the fish protein, the chitosan and the proline can improve the cold resistance of crops; the multivitamins improve the stress resistance of crops by protecting cell membranes from damage, improving photosynthesis efficiency and reducing respiratory capacity loss; the boron-containing substances and the zinc-containing substances are used for supplementing trace elements to crops; and the combination, scientific compatibility, complementation and coordination of recombinant organic raw materials and inorganic raw materials of the raw materials can be guaranteed at low temperature, and the biological activity of crops and the resistance of the crops to freezing injury can be organically combined, so the adaptability of the crops to a low-temperature stress environment is enhanced, the growth and development of the crops in the low-temperature environment are promoted, and production cost is low.

The invention provides a cryopreservation method of grouper sperms, and belongs to the technical field of sperm preservation. The cryopreservation method comprises raw materials in parts by weight asfollows: 32-52 parts of NaCl, 28-57 parts of KCl, 21-40 parts of CaCl2, 20-61 parts of trehalose, 18-44 parts of liquid nitrogen, 20-68 parts of an anti-freezing liquid and 26-50 parts of compound antibiotics. By combination with the cryopreservation method comprising steps of sperm collection, dilution, precooling and quick-freezing for low-temperature storage of a seminal fluid, the reactivatedsperms can keep vigor of fresh sperms by the aid of a reasonable cooling rate, and the cryopreservation method has great significance for establishment of a marine fish sperm bank and protection for germplasm resources and biodiversity.

An acidification preflushing fluid with a seepage regulatory function comprises a seepage regulatory agent and an acidification preflushing fluid. The preparation technology for the seepage regulatory agent comprises: adding 5-15 parts by weight of acrylic acid monomer, 2-8 parts by weight of acrylic acid ester, 1-8 parts by weight of acrylamide and 2-5 parts by weight of coupling agent KH570, and the balance deionized water successively to a reaction vessel, stirring to uniform, heating to 90 DEG C and keeping constant temperature, stirring as feeding nitrogen for 30min to remove oxygen in the solution, and adding a solid initiator with a mass percentage content of 0.2%-0.8% to initiate the solution to carry out a polymerization reaction at normal pressure for 7-9 h. A preparation method for the acidification preflushing fluid is that: the preflushing fluid is formed by adding a phase permeability modifier with a mass percent of 0.2%-5% to deionized water or clear water and stirring to uniform at normal temperature and pressure, or adding the phase permeability modifier with a mass percentage of 0.2%-5%, a corrosion inhibitor with a mass percentage of 0.5%-2% and hydrochloric acid or mud acid with a mass percentage of 5%-20% to deionized water or clear water and stirring to uniform at normal temperature and pressure.

The invention relates to a preparation method of a bacteriostatic sugar-free gel material used for xerostomia and belongs to the technical field of materials for the oral cavity. According to the technical scheme, propolis is effectively modified, a nano propolis material is extracted and collected, a two-component gel system is more adjustable than a single-component gel system structure when used as a saliva releasing agent for coating citric acid, the citric acid is effectively slowly released, and the saliva secretion capacity of the oral cavity is improved; meanwhile, according to the technical scheme, chitosan is used as a modified material to effectively inhibit complications such as candidiasis albicans and dental caries, and the oral cavity environment is further improved. According to the technical scheme, the citric acid is adopted for modifying the chitosan and then coated for additional modification; since the citric acid is a tricarboxylic acid and carboxyl of the citricacid has strong reaction activity, the citric acid and amino of the chitosan can triger an acylation reaction under a certain condition, so that a hydrophilic group carboxyl is introduced into chitosan molecules to improve the water solubility of the chitosan, and the slow release performance and use performance of the material are further improved.

The invention discloses two-way regulating essential toner for controlling oil and replenishing water. The two-way regulating essential toner for controlling oil and replenishing water comprises the following components in percentage by mass: hyaluronic acid oligomersmall-molecule, rose flower oil, a grape seed extract, an apricot fruit extract, water-soluble lanolin, an amino acid moisturizer, phenoxyethanol, hydrogenated castor oil, glycerine, propylene glycol, allantoin, essence, an aloe vera extract, a plant preservative, animal glue, and the balance of water. The two-way regulating essential toner for controlling oil and replenishing water provided by the invention has the functions of replenishing water, moisturizing and calming the skin, and is mild, skin-friendly, safe and non-irritating. Thus, the essential toner is capable of making the skin moisturized, smooth and elastic; and moreover, the essential toner is suitable for long-term use.

The invention discloses a process for accelerating ageing of yellow rice wine by gamma rays, and relates to the technical field of yellow rice wine ageing. The process comprises the following steps: feeding new wine into an ageing device, taking calcium hypocholoride as an oxidizing agent, adding a calcium hypocholoride solution into to-be-treated yellow rice wine, performing redox reaction underthe illumination condition, and sealing and storing the treated yellow rice wine at room temperature for 2 months. The calcium hypocholoride serves as the oxidizing agent, acceleration of the redox reaction and esterification reaction is promoted under the synergistic effect of the gamma rays and a catalyst silicon dioxide, the ageing speed is high and the efficiency is high.