423results about How to "Change permeability" patented technology

An apparatus for controlling a flow of a formation fluid is provided that in one embodiment may include a tubular with one or more fluid flow passages and a flow control device formed from a particulate and a hydrophilic material, the flow control device being adjacent to the tubular and being configured to receive formation fluid flowing in a substantially radial direction when placed in a wellbore.

An apparatus for controlling fluid flow into a tubular includes an in-flow control device having a plurality of flow paths; and a reactive media disposed in each of the flow paths. The reactive media may change permeability by interacting with a selected fluid such as water. Two or more of the flow paths may be hydraulically parallel. The reactive media may include a Relative Permeability Modifier. An associated method may include conveying the fluid via a plurality of flow paths; and controlling a resistance to flow in plurality of flow paths using a reactive media disposed in each of the flow paths. An associated system may include a wellbore tubular; an in-flow control device; a hydraulic circuit formed in the in-flow control device; and a reactive media disposed in the hydraulic circuit, the reactive media may change permeability by interacting with a selected fluid.

The invention discloses a method for grading the molecular weight of anglerfish skin collagen peptide. The method comprises the following steps: soaking anglerfish skin in dilute alkaline liquid; taking out, then washing with water and draining; performing enzymolysis on the anglerfish skin; after deactivating enzyme, adding active carbon for debitterizing and decoloring; entrapping collagen peptide with the molecular weight being more than 10,000 Daltons from the filtrate obtained after the active carbon is filtered out, by a first-level plate type ultrafiltration membrane; entrapping collagen peptide with the molecular weight being more than 2,000 Daltons by a second-level roll type ultrafiltration membrane; and entrapping collagen peptide with the molecular weight being more than 200 Daltons by a roll type ultrafiltration membrane. According to the method, the anglerfish skin is hydrolyzed by using pepsase and flavourzyme step by step during enzymolysis, and the collagen peptide with the molecular weight in broad distribution is subjected to effective molecular weight grading processing after enzymolysis, so the collagen peptide with different molecular weight segments can be obtained and can be effectively utilized.

The invention discloses a bactericidal laundry detergent containing traditional Chinese medicine components. The bactericidal laundry detergent containing traditional Chinese medicine components comprises the following raw materials in parts by weight: 10-20 parts of benzalkonium bromide, 20-25 parts of fatty alcohol-polyoxyethylene ether, 20-25 parts of glycine betaine, 1-6 parts of potassium sorbate, 1-4 parts of sodium alginate, 1-4 parts of glycan, 10-35 parts of deionized water, 2-10 parts of a pH adjusting agent and 2-5 parts of a traditional Chinese medicine extract, wherein the traditional Chinese medicine extract is an extract with a concentration of 2g/ml; the extract is prepared from rheum officinale and radix scutellariae according to a mass ratio of (2-3) to 1. The bactericidal laundry detergent containing traditional Chinese medicine components has the advantages of good bactericidal and antibacterial effects and strong cleaning power.

The invention discloses an indoor air disinfectant and a preparation method thereof, and relates to the technical field of disinfectants, and the indoor air disinfectant comprises the following raw materials: 45-55 parts of Chinese herbal medicine extract, 35-36 parts of a fungicide, 32-33 parts of plant essential oil, 20-25 parts of an activation particle, 17-19 parts of an assistant and 75-80 parts of deionized water. The indoor air disinfectant is non-toxic and nonirritant, fresh in smell, good in disinfection effect and long lasting in effect.

The invention discloses a duplex dentin hypersensitivity resistant composition and an application of the composition. The active ingredients of the duplex dentin hypersensitivity resistant composition include a potassium salt and titanium containing bioactive glass, wherein the weight percentage of the potassium salt in the composition is 0.3-12%, and the weight percentage of the titanium containing bioactive glass in the composition is 0.5-15%. The duplex dentin hypersensitivity resistant composition disclosed by the invention can be used for preventing and treating (eliminating or relieving) dentin hypersensitivity; on one side, the potassium salt releases potassium ions to rapidly relieve pain (by reducing the excitability of a dental pulp nerve), on the other side, the bioactive glass can be used for supplementing minerals for a tooth structure to form stable carbonated hydroxyapatite so as to deeply close a dentinal tubule (by improving the permeability of the dentinal tubule); treatment effect is greatly improved, and aching feeling and anaphylaxis can be radically eliminated to achieve the purposes of treating both symptoms and root causes; in addition, as the bioactive glass comprises titanium, the phosphorite layer formed on the surface of a tooth is firmer and more wear-resistant, and the tooth can better resist daily stimulation.

The invention provides a no-washing foam hand disinfection solution and a preparation method thereof, and belongs to the technical field of hand disinfection solutions. The no-washing foam hand disinfection solution comprises a surface active agent, a foam stabilizing agent, ethanol, a sterilizing agent, an emollient and essence and is prepared through a simple process. The no-washing foam hand disinfection solution provided by the invention is an ethanol-containing no-washing foam hand disinfection solution, is broad-spectrum, antibacterial, especially suitable for medical workers, patients or family members in a hospital and has the advantages of good disinfection effect, long-acting bacteria inhibition and skin-protecting effect.

The invention discloses a surface spraying film agent for a plant, which relates to a plant protecting film agent which is sprayed on the surface of a plant to protect the plant and to improve plant growth quality and belongs to the technical field of plant protection. The invention is characterized in that chemical components of the surface spraying film agent comprise dibutyl phthalate, polyvinyl alcohol, an emulsifier OP-10, persulfate, sodium bicarbonate, humate, hydroxypropyl methyl cellulose, alkyl sulfonate, lauryl alcohol polyoxyethylene ester, gelatin, nanometer white carbon black and water. The invention has the following beneficial effects: the film agent forms on the plant surface a layer of a compacted netted invisible monomolecular film which cannot be seen with naked eyes; the film is ventilating but waterproof, enables a fruit, a leave and a branch to be shiny, is similar to a fruit bag, genuinely plays a role in preventing pollution, sunburn, steam burn and insect diseases and has the functions of fruit surface brightening, anti-cracking, color-improvement, inhibition of breathing, prolongation of after-harvest refreshing time and the like; and manpower, material resources and financial resources are saved.

The invention discloses a preparation method of instant dried white fungus. The preparation method is characterized in that: dry white fungus is used as a raw material; and the preparation method comprises the production process flows of impurity removal, soaking, balancing, softening, drying and cooling. By adopting the process of soaking in low-concentration ethanol solution for short time and balancing, the white fungus properly absorbs water; by adopting the high-temperature steam softening process, the tough cell membrane structure of the white fungus is effectively destroyed; and by adopting the normal-pressure and low-temperature drying process, the operation is simple. The dried white fungus produced by the method has the characteristics of convenience for carrying and capability of being quickly rehydrated and dispersed after brewing; the obtained white fungus porridge has the same exquisite and smooth mouthfeel as the boiled white fungus porridge; naturally pure form, flavorand color of the white fungus are kept; and the dried white fungus is easily digested and absorbed, and can be transported, stored and sold at normal temperature.

The invention relates to the field of high polymer materials, and provides an antibacterial master batch, which comprises the following raw materials in parts by weight: 70-90 parts of polypropylene resin, 3-6 parts of nano-silver loaded graphene, 1-3 parts of a dispersing agent and 0.4-0.8 part of a lubricating agent, wherein the nano-silver loaded graphene has the advantages of both graphene andnano-silver. The antibacterial master batch obtained after melt granulation with polypropylene resin has excellent antibacterial property, solves the problems that a product produced from a polypropylene material in the prior art does not have antibacterial property and is easily polluted by bacteria, and can be applied to production of disposable tableware.

The invention discloses a preparation method of a cinnamaldehyde essential oil liposome antibacterial double-layer membrane with regulated releasing. The method comprises the steps that (1), cinnamaldehyde heat-sensitive essential oil liposome is prepared taking dipalmitoyl phosphatidyl glycerol, distearoyl phosphatidylcholine, cholesterol and cinnamaldehyde essential oil as raw materials; (2),thecinnamaldehyde heat-sensitive essential oil liposome and casein are taken as raw materials to prepare heat-sensitive protein composite liposome; (3), a pectin cast membrane is prepared; (4), zein powder is taken to be dissolved in an ethanol aqueous solution to obtain a basic spinning solution, the heat-sensitive protein composite liposome is added to the basic spinning solution to obtain a static spinning solution, the pectin cast membrane is taken as a recipient, and static spinning is conducted to obtain the cinnamaldehyde essential oil liposome antibacterial double-layer membrane. By means of the method, the stability of essence oil and the mechanical performance of the membrane can be improved, and the prevention of the generation of putrefying bacteria in the environment with relatively higher temperature and sustained releasing can be achieved.

The invention relates to a preparation method of an antisense RNA polyvalent vaccine for CoViD-19. The preparation method comprises the steps of (1) designing shRNA of 2019-nCoV, constructing pSilencer-shRNA and pDC312-shRNA, performing homologous recombination on the pDC312-shRNA and pBHGloxAEl to obtain shRNA/Ad5 capable of generating dsRNA, siRNA and antisense RNA; (2) synthetizing chemically-modified mononucleotide into the siRNA of 2019-nCoV, and further preparing lipid nanoparticles siRNA/LHNPs loading siRNA; (3) compounding the antisense RNA polyvalent vaccine for pulmonary administration from the shRNA/Ad5, the siRNA/LHNPs and a pressurized spray, wherein the shRNA/Ad5 can degrade target genes after continuously outputting siRNA, siRNA/LHNPs can directly and immediately degrade thetarget genes, when the shRNA/Ad5 and the siRNA/LHNPs are used in a compounding ratio, synergistic effects can be achieved, and immunization failure of a univalent vaccine can be avoided.

The present invention belongs to microbial polysaccharide fermentation, and particularly relates to a method for producing a microbial polysaccharide fermentation broth by using Paenibacillus mucilaginosus, wherein Paenibacillus mucilaginosus is inoculated in a culture medium containing a carbon source and a nitrogen source to carry out fermentation, and bacteria heat stimulation, addition of a surfactant during a fermentation process, and other manners are performed to optimize the production process. With the present invention, the problem of low yield of polysaccharides in the fermentation broth in the prior art is solved, and advantages of high polysaccharide yield in the fermentation broth, good bacterial growth, short fermentation period and the like are provided.

The invention discloses a grape peel pomace distilled liquor brewing technology, which comprises the following steps: (1) pretreating; (2) fermenting; (3) distilling; (4) allocating and ageing: according to weight parts, utilizing softened water to adjust alcoholic strength of 100 parts of peel pomace distilled liquor to the alcoholic content of 42%, adding 0.1 to 0.15 part of E150a-I caramel pigment, 0.7 to 1.5 parts of white granulated sugar and 0.5 to 0.8 part of oak block, putting all into a stainless steel tank to be sealed and aged and removing the oak block after one year to obtain a finished product of the grape peel pomace distilled liquor. According to the grape peel pomace distilled liquor brewing technology, squeezed peel pomace is secondarily fermented and distilled by adding the passion fruit juice, peel pomace peculiar smell and steaming smell are reduced, and fruit fragrance of the peel pomace distilled liquor is improved; by means of oak ageing, oak fragrance is improved, a taste grade can reach intermediate-grade brandy, and additional value of raw materials is further improved.

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 discloses a microwave ablation antenna with internally-arranged pipelines. The microwave ablation antenna with the internally-arranged pipelines comprises a microwave radiation antenna head 1, a matched insulation sleeve 2, an antenna mast 3, a microwave transmission cable 4, a handle and a coaxial connector 7. The inner pipeline 5 in the antenna mast 3 is communicated with the center pipeline 12 and a side through hole 13 in the microwave radiation antenna head 1. One end of the inner pipeline 5 is in butt joint with the center pipeline 12 and the other end of the inner pipeline 5 is an outer pipeline joint 8 located on the handle 6. The side through hole 13 is located on the side face of the microwave radiation antenna head 1. The injection function of the ablation antenna is achieved through the outer pipeline joint 8 via the inner pipeline 5, the center pipeline 12 and the side through hole 13. Living tissue cells are extracted through the side through hole 13 on the microwave radiation antenna head 1 into the center pipeline 12, the inner pipeline 5 and the outer pipeline joint 8.

The invention discloses a method for extracting gutta-percha from the leaves and bark of eucommia ulmoides. The method comprises the steps that the leaves and bark of the eucommia ulmoides are washed, dried and mechanically crushed, soaking is carried out with aqueous alkali at normal temperature, filtering is carried out, and filter residues are subjected to high temperature sterilization; an aqueous surfactant solution is added to adjust the moisture content of the filter residues, then the filter residues are inoculated with actinomycetes strains, a carbon source and a nitrogen source are added, and fermentation is carried out to damage cellulose in the leaves and bark of the eucommia ulmoides; then the gutta-percha is extracted through a conventional solvent method. Through aqueous alkali pretreatment on the gutta-percha, the leaves and bark of the eucommia ulmoides are fermented through actinomycetes in an alkali environment to degrade lignin, meanwhile, and the aqueous surfactant solution is added to improve the degradation efficiency of the actinomycetes on the cellulose in the leaves and bark of the eucommia ulmoides. According to the method, the gutta-percha yield is increased, and meanwhile the efficiency of extracting the gutta-percha through a biodegradation method is improved.

The invention discloses a cucumber cultivation method which includes the steps: (1) seed pretreatment: selecting seeds, naturally airing the seeds, placing the seeds into seed soaking agents, removing inferior seeds, soaking the seeds in hot water and then soaking the seeds in sterilization solution; (2) seed germination acceleration: placing the seeds obtained in the step (1) into the seed soaking agents, soaking the seeds for 5-8 hours, uniformly mixing the seeds with a germination accelerating substrate, performing ultrasonic treatment at the temperature of 20-30 DEG C, placing the seeds into a germination accelerating box at the temperature of 30-35 DEG C and accelerating germination; (3) seedling bed selection and arrangement; (4) seedling culture; (5) transplantation; (6) field management; (7) harvesting. The cucumber cultivation method is high in cucumber seed germination rate, cultured seedlings are strong in growth vigor and high in disease resistance and have developed root systems, and the survival rate and the maturing rate of the seedlings are increased.

The present invention belongs to the field of aquatic product processing and mainly relates to an ultrasonic wave assisted rapid acid removal method of Peruvian squids. Firstly, frozen Peruvian squids are semi-thawed, the thawed squids are peeled, internal organs are removed, the treated squids are washed, the washed squids are cut into slices, an acid removal liquid is added (the acid removal liquid consists of sodium pyrophosphate at a mass percentage concentration of 0.2-0.8%, sodium carbonate at 0.1-0.5%, sodium citrate at 0.2-0.8%, sodium tripolyphosphate at 0.2-1% and edible salt at 0.5-2%), the squids are firstly pretreated with ultrasonic wave, then the pretreated squids are soaked and rinsed, and after the soaking, the squids are rinsed with running water. The method is simple in technology and convenient in treatment, can also effectively improve the sour taste and bitter taste of the Peruvian squids, and improves the product quality of the squid products.

The invention disclose a method for extracting dioscorea zingiberensis pigment by an enzymatic method, which comprises the following steps of: dissolving pectinase in an acetic acid-sodium acetate solution to prepare a pectinase enzymatic solution; adding dioscorea zingiberensis powder into the pectinase enzymatic solution, then adding the acetic acid-sodium acetate solution for reacting, and adding anhydrous ethyl alcohol; extracting in thermostatic waterbath with the temperature of 65-70 DEG C; repeatedly extracting; merging filtrate; and then concentrating the filtrate to that the concentration of ethyl alcohol is less than 10 percent to obtain the dioscorea zingiberensis pigment. By utilizing the special property of the pectinase, the invention effectively improves pigment extraction amount without environmental pollution during production and lays a foundation for the scale production of the dioscorea zingiberensis pigment. By adopting enzyme to pretreat the dioscorea zingiberensis for damaging cell structures and degrading impurities, the invention has higher pigment obtaining efficiency and pigment quality, and not only alleviates environmental pollution and improves the utilization rate of the dioscorea zingiberensis, but also explores a novel edible natural pigment.

The invention provides a chitosan antibacterial skin-moistening washing-free hand sanitizer. The chitosan antibacterial skin-moistening washing-free hand sanitizer comprises ionized water, an emollient, a sterilizing bacteriostatic agent, a pH regulation agent and an addition agent, wherein the sterilizing bacteriostatic agent comprises chitosan, denatured ethanol and sodium citrate; and the emollient comprises glycerine and ethylene glycol. According to the chitosan antibacterial skin-moistening washing-free hand sanitizer disclosed by the invention, the sterilizing bacteriostatic agent prepared from the chitosan, the denatured ethanol and the sodium citrate has good effects of removing bacteria and restraining bacteria. The chitosan antibacterial skin-moistening washing-free hand sanitizer can save water, protect ecological environment and effectively restrain bacteria, does not have any irritating effects on skin, has good effects of removing dirt and moistening skin, and is safe and healthy to use. The invention also provides a preparation method of the chitosan antibacterial skin-moistening washing-free hand sanitizer.

The invention discloses a Chinese herbal medicine disinfectant which comprises, by weight, 3-8 parts of rhizoma atractylodis, 8-12 parts of scutellaria baicalensis, 8-20 parts of honeysuckle, 7-13 parts of sophora flavescens, 12-18 parts of clove, 5-15 parts of Chinese barberry root, 15-25 parts of mint, 2-10 parts of radix gentianae, 5-10 parts of radix thalictri, 3-7 parts of andrographis paniculata, 8-17 parts of radix isatidis, 10-20 parts of folium ginkgo, 8-15 parts of orange peel, 2-5 parts of fructus ligustri lucidi, 6-13 parts of garlic, 7-16 parts of ginger, 13-25 parts of chitosan, 7-15 parts of organic boric acid, 10-30 parts of modified montmorillonite and 3-8 parts of quaternary ammonium salt. The Chinese herbal medicine disinfectant is low in toxicity and irritation, small in smell and little in corrosiveness, has the advantages of high disinfecting efficiency and wide fungicidal spectrum and is suitable for popularization.