64results about How to "Against pollution" patented technology

The nanometer mirror spraying process includes the following steps: 1. eliminating surface dust; 2. spraying primer; 3. sensitizing and activating treatment; 4. spraying solution A comprising silver nitrate solution, ammonia water solution and sodium hydroxide solution and solution B comprising sodium borohydride, potassium borohydride or p-methylaminophenol sulfate solution in the volume ratio of 1 to 1-1.7 to produce reduction; 5. shaping and developing; 6. blowing to dry; and 7. drying. The present invention has the advantages of diversified products, high corrosion resistance, suitability to mass production, high hardness, low cost, etc.

The invention mainly relates to a method for preparing a protein feed by fermentation on straw and cake using aerobic mixed bacteria. The method for preparing a protein feed by fermentation on straw and cake using aerobic mixed bacteria is mainly characterized by comprising the following steps of: uniformly stirring straw, cake, wheat bran and corn flour, and enabling the water content thereof toachieve 50-60%; adding ammonium sulphate having an amount of 0.5-4% relative to the total amount of dry materials and urea having an amount of 0.5-3% relative to the total amount of dry materials; adjusting pH to 5.5-6.5 by 1% lime water; joining the raw materials in bacterial solution having an amount of 8-12% relative to the total amount of dry materials, obtained by mixing geotrichum candidum,lactic acid bacteria and bacillus licheniformis, and having a ratio by weight of 50-60% of geotrichum candidum to 30-35% of lactic acid bacteria to 5-10% of bacillus licheniformis; and fermenting for18-24 hours in a ventilation condition at a temperature of 28-32 DEG C, so as to prepare the fermented protein feed. The method for preparing a protein feed by fermentation on straw and cake using aerobic mixed bacteria disclosed by the invention utilizes modern bio-technology, optimizes the best combined bacteria, has simple and convenient production process, saves equipments and energies, and reduces the needed investment.

The invention discloses water-based environment-friendly porcelain glaze-like plastic coating and a preparation method thereof. The water-based environment-friendly porcelain glaze-like plastic coating adopts a formula comprising the following materials by mass: 20 to 40 percent of a water-based acrylic emulsion, 10 to 20 percent of water-based silica sol, 35 to 50 percent of water-based inorganic silicon dioxide nanodispersion, 0.1 to 0.3 percent of a wetting dispersant, 1 to 5 percent of silane, 0.1 to 0.5 percent of an amine neutralizing agent, 5 to 10 percent of lead-free pigment, 0.5 to 2.5 percent of a film-forming additive, and 5 to 25 percent of deionized water. The water-based environment-friendly porcelain glaze-like plastic coating can be coated on the surfaces of various materials in the form of porcelain glaze, and can be applied on the surfaces of the materials of various shapes through roller-applied coating, shower coating, spraying, blade coating, brush coating, dip coating and the like; moreover, the formed porcelain glaze coating is unique and free from hydrolysis, and cannot be melted at a certain temperature, so that a base material can be effectively protected from corrosion, abrasion, scraping, acid-alkali, impact, inflaming and fire.

The invention discloses a site fast detection method for copper, zinc, lead and cadmium as heavy metals in seawater, and belongs to the technical field of environment monitoring. A conducting carbon black-ionic liquid paste electrode as a work electrode, Ag / AgCl as a reference electrode and platinum filament or glass carbon as a counter electrode are assembled to form an electrochemical sensor. The concentrations of ionic copper, zinc, lead and cadmium in seawater are respectively determined by adopting square wave anodic stripping voltammetry; and the site fast detection method has the advantages of high sensitivity, favorable repeatability, simple and convenient operation, low expense, quick response, accurate quantification, low requirement on the environment condition and the like, and can be used for site monitoring of offshore pollution and conventional ocean site investigation along with ships.

The invention mainly relates to a method for preparing protein feed from straw and inedible vegetables through mixed bacteria aerobic fermentation. The method is mainly characterized by comprising the following steps: uniformly stirring straw, inedible vegetables, rapeseed meal and bran till the moisture content reaches 50-60 percent; adding ammonium sulfate the mass of which accounts for 2-6 percent of the total mass of the dry materials, and urea the mass of which accounts for 1-4 percent of the total mass of the dry materials; regulating the pH value to be 5.5-6.5 by using 1 percent of whitewash; inoculating bacteria liquor which is formed by mixing Geotrichum candidum Link, lactic acid bacteria and aspergillus niger and the mass of which accounts for 8-12 percent of the total mass of the dry materials, wherein the mixed bacteria liquor comprises the following components in percentage by weight: 50-70 percent of Geotrichum candidum Link, 20-25 percent of lactic acid bacteria and 5-10 percent of aspergillus niger; fermenting at the temperature of 28-32 DEG C under ventilation conditions for 24-36 hours, thereby preparing the fermented protein feed. According to the method, by utilizing the modern biotechnology, optimal combined bacteria are optimized, the production process is simple and convenient, equipment and energy are saved, and the needed investment is low.

The invention mainly relates to fermentation method of microorganism, in particular to a method for preparing bacillus megaterium, bacillus mucilaginosus and azotobocter chroococcum combined solid fungicide by utilizing waste liquid and waste residue which are produced in food industry and application thereof. An indigenous probiotic microorganism solid fungicide is composed of bacillus megaterium, bacillus mucilaginosus, azotobocter chroococcum and solid culture medium, wherein the weight percents of the three bacterial strains are 55-65%, 30-35% and 5-10% respectively; the preservation number of bacillus megaterium is CGMCC 3770, the preservation number of bacillus mucilaginosus is CGMCC 3769, and the preservation number of azotobocter chroococcum is CGMCC 3768. The microorganism fungicide is used as crop and plant growth regulator or livestock and poultry feed additive. The invention has the advantages that waste liquid and waste residue which are produced in food industry are taken as raw material, no 'three-waste' pollution is produced in production process, production technology is simple, operation is simple, manpower is saved, energy source is saved, and solid fungicide thereof can be taken as microorganism fertilizer.

The invention discloses elastic non-woven cloth with high water absorption and air permeability for medical magnetic therapy. The elastic non-woven cloth is made from, by weight, 20-27 parts of modified polylactic acid fiber, 20-33 parts of modified bamboo fiber, 10-20 parts of hydroxymethyl cellulose, 2-5 parts of casein, 20-30 parts of soybean fiber, 5-10 parts of sodium alginate, 20-35 parts ofstarch, 20-23 parts of magnetic starch, 40-45 parts of modified polyacrylamide fiber and 3-5 parts of a plant extract. The non-woven cloth has bacteriostatic activity, can effectively prevent wound infection, and is suitable for extensive symptoms, remarkable in health effect, safe and reliable in magnetic therapy function and economical and practical; raw materials adopted are biodegradable natural polymer materials and have good biocompatibility, and simpleness in the method is achieved.

The invention relates to a high efficient complex enzyme sewage treatment process which is carried out according to the following steps: (1) massive grains such as suspended substances in sewage are removed through a grid, and then the sewage enters a regulating reservoir; (2) the sewage in the regulating reservoir enters a high efficient complex enzyme catalyzing-membrane bioreactor device; (3) the sewage passes through a membrane module of the high efficient complex enzyme catalyzing-membrane bioreactor device, and clear water penetrates through the membrane module and flows out; (4) a concentrated solution which cannot penetrates through the membrane module enters a biological processing part again so as to be further catalyzed and deteriorated; and (5) the steps are repeated till the processed water reaches the reuse water discharging standard. The invention also relates to a high efficient complex enzyme sewage treatment device. The process and the device makes up the detects of the current MBR process, such as membrane pollution, high expense, and the like, and can rapidly deteriorate pollutants, rapidly and high efficiently purify the sewage, achieve good treatment effect and greatly lower the running cost for sewage treatment.

A method for preparing the bacterial protein forage includes such steps as providing distillers' grains, straw or stalk, bran and corn powder, stirring, adding ammonium sulfate and urea, regulating pH=5.5-6.5 by lime milk, inoculating the liquid mixture of reticularia, candida utilis and Rhizopus, and fermenting at 28-32 deg.C for 18-24 hr in the ventilation condition.

The invention mainly relates to microorganism fermenting methods, in particular to a method which prepares a solid FGR microbial inoculum that combines yeast fusion strain (F306), geotrichum candidum link (G361) and rhizopus stolonifer strain (R) by utilizing wastewater and waste residue generated in food industries as well as application thereof. A solid culture medium of the solid microorganism microbial inoculum comprises following dry components by weight percentage: 50 to 80 percent of scum residue, 15 to 30 percent of corncob powder, 8 to 12 percent of bran coat, 0.5 to 0.8 percent of corn meal, 0.1 to 3 percent of ureophil and 0.2 to 4 percent of ammonium sulfate, fresh wastewater of bean curd, bean vermicelli, corn starch or yam starch is added for leading the weight percentage of water to be 45 to 65 percent, limewater with the concentration of 1 percent is used to adjust pH value between 5.5 and 6.5, a mixed strain liquid of the yeast fusion strain, the geotrichum candidum link and the rhizopus stolonifer strain with the weight 8 to 12 percent of the total dry components is added and completely agitated, ventilated agitation and fermentation are implemented in a fermenting pool with dual purposes of fermenting and drying at the temperature of 28 to 32 DEG C for 18 to 24 hours, and hot air is led into the fermenting pool at the temperature of 40 to 60 DEG C for drying, thus producing the solid microbial inoculum that has great application effect in addition agents of beast and bird feedstuff.

The invention relates to tea bran shampoo and a preparation method thereof. The tea bran shampoo is prepared from tea bran raw stock, camellia oil, fructo-oligosaccharide and sodium hyaluronate. By utilizing the tea bran shampoo provided by the invention, a user does not need to nurse hair by virtue of an additional hair conditioner; and after the tea bran shampoo is used, the hair is clean and smooth, scurf can be effectively removed, and the hair loss can be effectively prevented.

The invention discloses a cosmetic additive with an anti-pollution effect and a cosmetic thereof, and aims to provide the cosmetic additive capable of effectively reducing adhesion to pollutants to the skin, protect skin cells, resisting external pollutants and having the effects of inflammation resisting, repairing and relieving. The cosmetic additive comprises, by weight, 3-12 parts of braseniaschreberi leaf extract, 1-10 parts of quercus robur root extract, 1-7 parts of moringa pterygosperma seed extract, 2-8 parts of salicornia herbacea extract, 1-6 parts of aureobasidium pullulans fermentation product and 2-7 parts of ginkgo biloba extract. The cosmetic additive can be used in cosmetics to enhance the skin barrier and achieve excellent isolation and defense functions on the skin andhas a good application prospect. The cosmetic belongs to the technical field of cosmetics.

The invention discloses an enzyme-containing gentle and moist cleanser and a preparation method thereof and belongs to the technical field of cosmetics. The enzyme-containing gentle and moist cleanseris prepared from raw materials in percentage by mass as follows: 5%-20% of a moisturizer, 35%-55% of a cleaner, 0.05%-0.12% of essence, 0.5%-5% of a skin conditioner, 2.5%-10% of a thickener, 0.5%-3%of glycol distearate, 0.24%-0.36% of a preservative, 0.4%-0.6% of a pH regulator, 0.1%-10% of extract enzyme and the balance of water, wherein the extract enzyme is prepared from one or more of brownalgae, red algae or green algae by fermentation. By means of raw material proportioning, the raw material components can realize sufficient interaction, functions of moistening skin, preserving moisture, resisting inflammation and allergy and the like are achieved on the basis of retaining the cleaning function of the cleanser, meanwhile, nutrients can be sufficiently reserved, and the skin is subjected to multiple nursing from different aspects and becomes healthier and more active.

The invention provides a skin-care composition containing lotus active ingredients and a preparation method of the skin-care composition. The skin-care composition comprises the following components: glycerin, 1,3-butanediol, squalene, polydimethylsiloxane, modified polydimethylsiloxane, dicaprylyl carbonate, isopropyl myristate, cetearyl alcohol, white beeswax, titanium dioxide, iron oxides, sodium chloride, nuciferine, lotus pollen, allantoin, sodium hyaluronate, methylparaben, propylparaben, diazolidinyl urea, iron oxide red, iron oxide yellow, essence and deionized water. The skin-care composition is a powder product which takes full advantage of the lotus active ingredients, and the types and consumption of the various components are set reasonably; by adoption of the reasonable preparation method, the color of the prepared skin-care product approximates the human skin color, and the color difference is avoided after the skin-care product is applied to the skin surface; and meanwhile, the skin moisturizing degree is improved obviously, the skin trans-epidermal water loss is reduced, and the skin elasticity is improved.

The present invention relates to a portable nanofiltration water purification cup. The cup comprises a cup body, a cup lid and an internal detachable water purification structure. The cup consists of four layers, namely a raw water storage layer 5, an active carbon adsorbing impurity layer 6, a hollow fiber nanofiltration layer 7 and a purified water storage layer 8. A water outlet 9 is formed in the side part of the cup body, a small manual pump 1, pressurizing the water storage layer to improve the filtration velocity, is connected on the cup lid through a screw and a pipe, and the cup lid is provided with a sealing ring to ensure the good air-tightness of the water storage layer and the filtration layer during pressurization. The cup is arranged in a compact portable structure, and field water such as river water, lake water and brackish water can be filtered into direct drinking water, so that the cup is good in practicality, simple in structure, easy to operate, convenient to carry, free of electrical energy, energy-saving, environmental-friendly, delicate and attractive.

The invention discloses a technical formula of a freckle-removing whitening VACE essence. The freckle-removing whitening VACE essence is mainly characterized in that 1) the main ingredients comprise retinyl palmitate (VA), ascorbyl tetraisopalmitate (VC), tocopheryl acetate (VE), canola oil, organosilicone, polydimethylsiloxane and other auxiliary ingredients; 2) the main ingredients are as follows in parts by weight: 0.1-10 parts of retinyl palmitate, 12-30 parts of ascorbyl tetraisopalmitate, 8-22 parts of tocopheryl acetate, 5-25 parts of canola oil, 1-20 parts of organosilicone, 1-20 partsof polydimethylsiloxane and 0.1-10 parts of other auxiliary ingredients. The freckle-removing whitening VACE essence has the advantages that the fat soluble ingredient VC and VA and VE essences whichare in high affinity with the skin are particularly adopted; on the basis that spots are faded, the allergy is prevented, the inflammation is eliminated and the dark matte skin is improved, the pollution of the external environment is deeply isolated, and the complexion is brightened. The organosilicone material is used as the auxiliary material, so that the essence is smooth and fresh, is good in spreadability, and is suitable for any skins, particularly the dry dark matte skin.

The invention mainly relates to a method for preparing a protein feed by fermentation on straw and cake using aerobic mixed bacteria. The method for preparing a protein feed by fermentation on straw and cake using aerobic mixed bacteria is mainly characterized by comprising the following steps of: uniformly stirring straw, cake, wheat bran and corn flour, and enabling the water content thereof toachieve 50-60%; adding ammonium sulphate having an amount of 0.5-4% relative to the total amount of dry materials and urea having an amount of 0.5-3% relative to the total amount of dry materials; adjusting pH to 5.5-6.5 by 1% lime water; joining the raw materials in bacterial solution having an amount of 8-12% relative to the total amount of dry materials, obtained by mixing geotrichum candidum,lactic acid bacteria and bacillus licheniformis, and having a ratio by weight of 50-60% of geotrichum candidum to 30-35% of lactic acid bacteria to 5-10% of bacillus licheniformis; and fermenting for18-24 hours in a ventilation condition at a temperature of 28-32 DEG C, so as to prepare the fermented protein feed. The method for preparing a protein feed by fermentation on straw and cake using aerobic mixed bacteria disclosed by the invention utilizes modern bio-technology, optimizes the best combined bacteria, has simple and convenient production process, saves equipments and energies, and reduces the needed investment.

The invention provides a preparation method of a low-temperature-resistant anti-freezing agent for fruit trees and belongs to the field of plant anti-freezing agents. The anti-freezing agent is obtained by adding an aqueous solution to an oil solution and then performing emulsification under the action of an external magnetic field. The aqueous solution comprises a polysaccharide immobilized Fe3O4magnetic fluid, and a preparation method of the Fe3O4 magnetic fluid comprises the steps as follows: mixing a sodium hydroxide solution and a surfactant, introducing N2 for protection, increasing thetemperature to 45-60 DEG C, slowly adding a mixed salt solution of ferric chloride and ferrous sulfate and stirring the mixture for a reaction; washing an obtained product with deionized water to beneutral, performing centrifugal sedimentation, vacuum drying and grinding, and storing the anti-freezing agent for later use. The anti-freezing agent is safe, environmentally friendly, long in life and long in effective acting time, has remarkable benefits for cold resistance and freezing prevention of fruit trees and can promote growth of fruit trees and enhance immunity of fruit trees.

The invention provides an oil injection and air exhaust system of an electro-hydraulic actuating mechanism. The problem to be solved is how to improve the oil injection efficiency. The system is characterized in that each oil cavity of an oil cylinder is provided with an oil discharging and air exhaust port; an oil inlet of an oil tank, a gear pump, a filter, an oil injection port of an electro-hydraulic actuator, the oil discharging and air exhaust ports of the oil cylinder and oil return ports of the oil tank form a closed-loop oil circuit; an oil circuit between the gear pump and the filterserves as an oil path formed in a main oil circuit block; the front part of an oil circuit between the filter and the electro-hydraulic actuator is an oil circuit from an oil path formed in the mainoil circuit block to an oil outlet of the main oil circuit block, and the rear part of the oil circuit between the filter and the electro-hydraulic actuator is an oil supply hose; an oil circuit between each oil discharging and air exhaust port of the oil cylinder and the corresponding oil return port of the oil tank is a transparent oil pipe; each transparent oil pipe is provided with a stop valve; and the gear pump and the hydraulic oil filter are installed on the main oil circuit block.

The invention relates to a cyclic utilization method of wastewater in casein phosphoeptide production, comprising the following steps of: a, precipitating protein in wastewater from the casein phosphoeptide production; b, filtering wastewater by the use of an ultrafilter membrane; c, absorbing by active carbon and carrying out chromatography by ion exchange resin; and d, allowing intercepted water obtained from the step b to enter the step a for cycling treatment. With wastewater from the casein phosphoeptide production process used as a raw material and by the adoption of combined processes of inflation aggregation, centrifugal precipitation, membrane filtration, active carbon adsorption and ion exchange resin chromatography, industrial organic wastewater is used as a resource for comprehensive utilization, thus recycling water resources, fully recovering proteins in wastewater from production and realizing conversion from resource advantage to economic advantage. The technology provided by the invention is easy to control and stable, has a simple operation process, has good water treatment effects and high efficiency, and requires low equipment investment and operation cost. The method provided by the invention is environmentally friendly and energy-saving, had has good additional economic benefit. Its water treatment technology has a good application prospect in processing of wastewater from production of dairy product, casein and its highly processed products.

The invention provides waterborne intumescent flame-retardant coating. The waterborne intumescent flame-retardant coating comprises, by weight percentage, 20-30% of waterborne flame-retardant emulsion, 5-10% of waterborne composite nano flame-retardant dispersion slurry, 20-30% of acid source, 1-3% of carbon source agent, 8-15% of waterborne flame-retardant foaming agent, 0.5-1% of toughening agent, 5-10% of lead-free filler, 1-3% of waterborne wetting dispersing agent, 0.2-1% of penetrating agent, 0.5-1% of solubilizing stabilizer, 0.5-2% of anti-fouling agent, 0.5-2% of amine neutralizer, 0.5-2% of anti-freezing agent, 0.5-2% of coalescing agent and 8-15% of deionized water. The waterborne intumescent flame-retardant coating has the advantages that the complementary advantages of the materials are utilized sufficiently, and flame-retardant ultimate strength of base materials such as steel structures and decoration materials after the base materials such as the building steel structures are coated with the coating.

The invention relates to a cyclic utilization method of wastewater in casein phosphoeptide production, comprising the following steps of: a, precipitating protein in wastewater from the casein phosphoeptide production; b, filtering wastewater by the use of an ultrafilter membrane; c, absorbing by active carbon and carrying out chromatography by ion exchange resin; and d, allowing intercepted water obtained from the step b to enter the step a for cycling treatment. With wastewater from the casein phosphoeptide production process used as a raw material and by the adoption of combined processes of inflation aggregation, centrifugal precipitation, membrane filtration, active carbon adsorption and ion exchange resin chromatography, industrial organic wastewater is used as a resource for comprehensive utilization, thus recycling water resources, fully recovering proteins in wastewater from production and realizing conversion from resource advantage to economic advantage. The technology provided by the invention is easy to control and stable, has a simple operation process, has good water treatment effects and high efficiency, and requires low equipment investment and operation cost. The method provided by the invention is environmentally friendly and energy-saving, had has good additional economic benefit. Its water treatment technology has a good application prospect in processing of wastewater from production of dairy product, casein and its highly processed products.

The invention discloses ship side thruster hydraulic oil which is formed through the following way: pentaerythritol ester and poly-alpha olefin are compounded, the mixture is used as base oil, and then the base oil is combined with multiple composite additives including an antiwear agent, an antioxygen, an anti-foaming agent, an anti-emulgator, an antirust agent, a metal deactivator, a friction improver and a corrosion inhibition assistant. The ship side thruster hydraulic oil can form a protective film on the surface of a hydraulic kinematic pair, resist pollution of seawater and has excellent anti-rust property, abrasion resistance, hydrolysis stability and emulsion resistance; in addition, the air release property and the anti-foaming property of the ship side thruster hydraulic oil are also excellent.

The invention discloses a pipeline mixed oil monitoring system based on terahertz frustrated total internal reflection, relating to the field of pipeline detection. The system comprises an emitter anda receiver, wherein the emitter and the receiver are placed in an insulating layer and are in direct contact with a terahertz frustrated total internal reflection prism sensor and only allow terahertz waves to penetrate through a terahertz window; the terahertz waves emitted by the emitter pass through the terahertz window, are reflected to a left-side incident plane of the total internal reflection prism sensor and are refracted and reflected, and the refracted waves enter the sensor; the terahertz waves are transmitted in the sensor so as to generate a frustrated total internal reflection phenomenon on the surface, in contact with an oil product, of the sensor; the terahertz waves emergent from a right-side emergent plane of the total internal reflection prism sensor carry feature information of the passing oil product; and the emergent terahertz waves pass through the terahertz window again and are received by the receiver, generated electric signals are acquired by a terahertz instrument through a cable, and then a terahertz frustrated total internal reflection spectrum of the oil product is obtained.

The invention provides an online monitoring and purifying method and system of oil fume. The online monitoring and purifying method of the oil fume comprises the following steps that environmental data and original oil fume data in an oil fume channel are collected; according to the collected environment data and the collected original oil fume data, an oil fume severity value in the oil fume channel is calculated; an oil fume exhaust fan is started, and a rotating speed at a corresponding grade is set for the oil fume exhaust fan according to the oil fume severity value and a preset corresponding relation between the rotating speed of the oil fume exhaust fan and the oil fume severity value; whether the oil fume severity value exceeds a preset threshold value or not is judged, if yes, an oil fume purification system is started to purify the oil fume in the oil fume channel, and otherwise, the oil fume purification system does not need to be started. According to the online monitoring and purifying method and system of the oil fume, real-time data of the oil fume concentration, particulate matter and non-methane total hydrocarbon are directly monitored, real and effective oil fume data are provided, and the oil fume monitoring quality and the oil fume purification effect are improved.

The invention discloses lip balm with an anti-pollution effect. The lip balm contains skin conditioners. The skin conditioners contain astrocaryum murumuru seed butter. The lip balm comprises, by weight, 0.1-10% of astrocaryum murumuru seed butter. The lip balm with the anti-pollution effect has the advantages that the astrocaryum murumuru seed butter is added into the lip balm, remarkable water replenishing and moisture retaining effects can be realized by lipid from nuts of palm trees, skin barrier can be repaired, external environment pollution due to lip skin can be resisted, and obvious immediate water replenishing, moisture retaining and repairing effects can be realized.

A microbial pollution resisting method for anti-penetration equipment includes the step that during operation of anti-penetration equipment, an ultraviolet light and non-oxidative sterilization cooperating device is arranged at an inlet of a safety filter to kill microorganisms in raw water which is subjected to primary treatment. By sterilizing continuously before water flows into the safety filter, generation of the microorganisms in the anti-penetration equipment is reduced, and a non-oxidative sterilizing agent is applied by a feeding and metering pump which is controlled in variable frequencies. The microbial pollution resisting method and a microbial pollution resisting device have the advantages that pollution to an anti-penetration membrane from the microorganisms is reduced, operation life of the anti-penetration equipment is prolonged, and service life of the anti-penetration membrane is prolonged.

The invention discloses a method for elliptic curve signature in a single-source network coding environment. The method comprises the steps of system initialization, generation of a single-source network coding key pair, determination of a Hash value of a message, elliptic curve signature of a source node, message combination, elliptic curve signature of an intermediate node and signature verification. The elliptic curve signature and the homomorphic Hash function are adopted, the verification process of the intermediate node is simplified, the calculation complexity is reduced, the energy consumption is reduced, and the generation identifier is introduced while the generation internal pollution is resisted, so that the inter-generation pollution is effectively resisted. The method has theadvantages of strong security, high calculation efficiency and the like, and can be popularized and applied in the single-source network coding.

The invention discloses whitening emulsion which is prepared by mixing a component A, a component B, a component C and a component D according to a mass ratio of 1:1:1:1. The component A is prepared from the following component in parts by weight: 2.0 to 4.0 parts of C14 to 22 alcohol; 1.5 to 2.5 parts of cetostearyl alcohol, 0.2 to 0.4 part of polysorbate-20, 0.2 to 0.4 part of glyceryl stearate,3.0 to 5.0 parts of isostearyl glyceryl pentaerythrityl ether, 3.0 to 5.0 parts of humectant and 0.4 to 0.6 part of tocopheryl acetate; the component B is prepared from the following component in parts by weight: 8.0 to 12.0 parts of butanediol, 0.04 to 0.06 part of disodium EDTA, 0.05 to 0.15 part of thickener, 0.4 to 0.6 part of D-panthenol and 80.0 to 85.0 parts of deionized water. The whitening emulsion can effectively reduce melanin content and implement rapid whitening.