298results about How to "Suitable for long term storage" patented technology

The invention relates to the field of stem cells, discloses a method for preparing exosome freeze-dried powder of stem cells, and particularly relates to a method for preparing exosome freeze-dried powder of human amniotic mesenchymal stem cells. The method for preparing the exosome freeze-dried powder of the human amniotic mesenchymal stem cells disclosed by the invention comprises the following steps: mixing trehalose with exosomes of the human amniotic mesenchymal stem cells as a cryoprotectant; filtering and removing bacteria by virtue of a filter membrane; and firstly carrying out ultralow temperature pre-freezing, and then carrying out low-temperature freezing at a certain vacuum degree. The preparation method disclosed by the invention is simple to operate, safe and effective. An experiment proves that compared with a conventional preparation method of the freeze-dried powder, the morphologies and the activity of the exosomes of the human amniotic mesenchymal stem cells can be well kept by the method for preparing the exosome freeze-dried powder of the human amniotic mesenchymal stem cells disclosed by the invention; and the method is suitable for long-term preservation and application of the exosomes of the human amniotic mesenchymal stem cells.

The invention discloses a method for preparing wax emulsion from branched polyethylene wax through direct emulsification, which comprises the following steps of: mixing the branched polyethylene wax and a cosolvent, adding an emulsifier and heating and emulsifying; adding water and dispersing and emulsifying by a phase transfer method; and shearing, emulsifying and dispersing to prepare milky branched polyethylene wax emulsion. In the emulsification method, the cosolvent is added into the branched polyethylene wax for direct emulsifying, and the process for production of the emulsion is greatly simplified. The branched polyethylene wax emulsion can be applied in the fields of leather finish, fur finishing, textile finishing, automobile polishing, shoe cream and the like, the coating has smooth handfeel, natural color, high hardness and high scratch resistance, and the wax emulsion is a high-grade wax emulsion product. The emulsification process can greatly expand the use of the branched polyethylene wax and reduce the application of solvent products, and is an environmentally-friendly emulsification process.

The invention relates to a method for preparing a functional type food containing persimmon. The technical scheme provided by the invention is as follows: the method comprises the following steps of: carrying out re-acerbity resistant treatment on persimmons: softening mature persimmons, cleaning, removing bases, pulping, and embedding by adding a compound debitterizing agent containing 2-5% of beta-cyclodextrin and maltodextrin to prevent re-acerbity; adding the prepared substances into ingredients; and deeply processing: stirring, mixing, rubber grinding, refining, slicing, drying, uncovering slices, overlapping slices, and slicing, wherein the embedding time is 50-70 min; and the embedding temperature is 35-45 DEG C. By adopting the technical scheme, the method disclosed by the invention has the benefits that: persimmons are processed into serial fruit paste type leisure foods which have the advantages of being good in mouth feel, easy for storage and applicable to being eaten by men and women of all ages; a condition is created for persimmon industrialization; unlike other foods containing persimmons, the produced foods can avoid re-acerbity phenomenon, taste good and tenacious and are suitable for being stored for a long time; and the technical problem which is expected to solve for a long time but not solved is solved.

The invention discloses a crystal IV of 3-(4-amino-1-oxo-1,3-dihydro-2H-isoindole-2-yl) piperidine-2,6-diketone. 2theta expressed by degrees has diffraction peaks between 7.7+/-0.2 and 11.9+/-0.2 in the X-ray diffraction pattern of the crystal. Moreover, the invention also discloses a preparation method and a medicinal composite of the crystal.

The invention relates to an anhydrous peramivir crystal compound and a preparation method thereof, and further discloses a pharmaceutical composition comprising the same and the application thereof in the preparation of medicaments for treating the influenza virus and the Avian influenza virus.

The invention discloses a moisturizing composition with an anti-allergy repairing efficacy and preparation and application to skincare products. The composition is prepared from xanthan gum, pullulan,polyglutamic acid, hyaluronic acid, trehalose, allantoin, urea and chondroitin sulfate by reasonable compounding. The composition has a function of stereo moisturizing of all skin layers including acorium layer, an epidermal layer, a cuticle layer and a skin surface, the skin moisture content can be increased, and skin moisture loss is reduced. The composition is capable of inhibiting hyaluronidase activity, soothing skin allergy and pruritus and repairing skin barrier. The composition has excellent moisturizing effects and an anti-allergy repairing efficacy in vitro and on human skin, effects are remarkably improved as compared with those of single use of each component, and accordingly synergistic effects are achieved by combination of the components in an appropriate ratio. The composition is solid powder and free of any preservatives, and convenience in long-time storage and transport is achieved. The composition can be applied to all types of skincare and cleansing products.

The invention provides a biological sporoderm-breaking technology and an effective antioxidation method for ganoderma lucidum spore powder. Firstly, full mature ganoderma lucidum spores are screened and put into water to be cleaned, then the ganoderma lucidum spores are heated after being frozen, spore enzymolysis and sporoderm breaking are carried out with one of expansin, cellulose, lysozyme, helicase and the like or the mixture of a plurality of enzymes for 3-24 hours at the temperature of 37-45 DEG C, pH (Potential Of Hydrogen) is regulated to 5.5-6.8 by citric acid, and then a vitamin C is used as an antioxidant of the ganoderma lucidum spore powder. Finally, 1% of sweetener-stevioside is used for removing bitter, and treatment with an instantaneous ultra-high temperature sterilization machine and bagging are carried out. The method disclosed by the invention has a good sterilization effect and high sporoderm breaking efficiency, is low in cost, does not break protoplasm of the ganoderma lucidum spore powder and keeps the original characteristics of the ganoderma lucidum powder.

The invention discloses an adsorption film mixing three metallic oxides and a preparation method thereof and a method for measuring fluorinion based on a gradient diffusion thin film technology. The adsorption film takes three oxides, namely iron, aluminum and cerium as adsorption materials, and the three oxides are uniformly dispersed into a polyacrylamide solution to form a gel and the gel is heated to form an adsorption film. The adsorption film, a diffusion film and a filter membrane are overlapped to assemble a DGT device, and the DGT device is placed into water body and sediments to realize in situ testing of fluorinion and the subcentimetre high resolution detection of fluorinion distributed in the water body and sediments. The adsorption film prepared by adopting the preparation method disclosed by the invention is large in adsorption capacity, long in retention time and easily available in materials; compared with the traditional fluorinion selective electrode method, the fluorinion in situ test method based on the gradient diffusion thin film technology is wide in application range and the result has more representativeness.

The invention relates to a method and a system for realizing storage and query of a communication detailed ticket. The method comprises the following steps: I, performing real-time processing on a real-time generated standard ticket file in a same day detailed ticket storage module to generate a same day detailed ticket storage file according to the number segment; II, performing regulation processing on the same day detailed ticket storage file generated in the former day in a former day detailed ticket regulation module to generate a former day detailed ticket regulation file and establish a day index file; III, compressing and filing all former day detailed ticket regulation files of all users in a designated month in a former month detailer ticket filing module to generate a former month detailed ticket filing file and establish a month index file; and IV, positioning corresponding detailed ticket files according to cell phone numbers and time to complete queries. The system and the method, provided by the invention, adopt different data organization forms for different detailed tickets and perform storage and queries in different ways, so as to reduce the cost and risk, and improve the efficiencies for storage and query of mass data.

The invention relates to PLGA ultrasonic nano bubbles integrating ultrasonic imaging, drug delivery and gene therapy into a whole and a preparation method thereof. The preparation method comprises the following steps: preparing drug-loading nano bubbles loaded with a chemotherapy drug DOX, further modifying PLGA nano bubbles through PEI, adsorbing shRNA plasmids of MDR-1, thereby forming the composite nano bubbles. The nano bubbles have high drug loading rate and encapsulation efficiency, drug release has pH responsiveness, the loaded genes can be protected, expression of drug resistance genes MDR-1 is effectively silenced, the ultrasonic imaging capacity can be exerted, and the drugs and genes can be simultaneously and efficiently delivered to tumor locations to exert a synergistic effect.

The invention discloses zirconium-based metal organic frameworks UiO-66 and application thereof, and further discloses a preparation method. The preparation method comprises the steps that zirconium tetrachloride and acetic acid are dissolved in N, N-dimethylformamide, terephthalic acid is added, and uniform stirring is carried out so as to obtain a mixed reaction solution; and the mixed reactionsolution is transferred into a reaction kettle and is placed at the temperature of 120 DEG C for reaction for 7-24 hours, then cooling is carried out to reach room temperature, solid-liquid separationis carried out, and then solid obtained after solid-liquid separation is cleaned and dried so as to obtain the zirconium-based metal organic frameworks UiO-66. The zirconium-based metal organic frameworks UiO-66 can serve as a liquid binding phase of a DGT(diffusive gradients in thin-films) device and are used for measuring the active phosphorus of a water body; and the zirconium-based metal organic frameworks UiO-66 have good binding capacity for the phosphorus and can be applied to the DGT(diffusive gradients in thin-films) device as the liquid binding phase, so that in-situ collection andrapid detection can be carried out on the active phosphorus of the water body, in addition, the operation is simple, the accuracy is high, the stability is good, and the the zirconium-based metal organic frameworks UiO-66 are suitable for long-term storage and large-scale production.

The invention relates to a paper pulp mould product which is antimicrobial and rotproof, protects the environment and can be used for a long time. The technical point is to prepare the paper pulp mould product by using the paper pulp made of Chinese stellera roots. The paper pulp mould product has the advantages that the fiber flexibility is good, the product is not crisp, the product is antimicrobial and rotproof as well as mothproof and acid and alkali resistant, etc., is suitable for a long-time storage, has the natural straw yellow green color and is particularly suitable for storing valuables and valuable medical materials for a long time.

The invention provides a waste composite high-heat biomass fuel and an ultrasonic microwave assisted preparation method thereof. The waste composite high-heat biomass fuel is prepared from the following components in parts by dry weight: 25-35 parts of forestry and agricultural residues, 15-25 parts of household waste, 15-25 parts of sludge, 15-25 parts of excrement, 15-25 parts of pulverized coal, 15-25 parts of waste tire rubber particles and 2-10 parts of combustion improver; the combustion improver is composed of dolomite powder, black shale powder, serpentine powder, urea, potassium perchlorate, red mud, calcium peroxide, manganese oxide, strontium peroxide, zinc oxide, cerium oxide, boric sludge and ferrocene. The waste composite high-heat biomass fuel is suitable for long-time storage without peculiar smell. The waste composite high-heat biomass fuel is high in combustion temperature which can be within the range of 1450-1500 DEG C, and compared with a common biomass fuel, the combustion efficiency is improved by about 40%; the heat value of the waste composite high-heat biomass fuel can be within the range of 5200-5600 kilocalories/kilometer, and each ton of the waste composite high-heat biomass fuel is equivalent to 0.77 ton of standard coal; the combustion tail gas conforms to the national relevant regulations, the sulfur removal rate can be 98% and the nitrate removal rate can be 95%.

The invention discloses a bladder-type storage tank for high concentration hydrogen peroxide, which comprises a storage tank shell body, an injection discharging component and a thin film liquid bag, wherein the injection discharging component is coaxially mounted inside the storage tank shell body; the injection discharging component is constituted of an end cover, a multi-hole pipe, a fixed disc and a support plate; the end cover and the fixed disc are respectively welded on two ends of the multi-hole pipe; the end cover is connected to a storage tank outlet flange; liquid inlet/ outlet channels are respectively opened on the end cover and the fixed disc; the multi-hope pipe is provided with dense small holes in order to make sure the flow area of a propellant; the fixed disc and a support disc are used for mounting the thin film liquid bag and fixing the injection discharging component; the support disc is designed with a diffusion hole in order to prevent the thin film liquid bag from being impacted directly by the pressurized gas; and the thin film liquid bag is uniform in applied force. The advantages are that the bladder-type storage tank is suitable for storing hydrogen peroxide propellant for a long time; the hydrogen peroxide propellant and the pressurized gas are separated by the thin film liquid bag; the pressurized gas is wide in choice; and the hydrogen peroxide won't be catalyzed and decomposed by the pressurized gas.

The invention provides six-delicacy filling for dumplings and a preparation method thereof. The three-delicacy filling for the dumplings comprises pig lean meat 20-30 parts, pig backfat 20-30 parts, dried shelled shrimps 2-4 parts, Chinese chives 4-8 parts, dried scallops 5-8 parts, sea cucumbers 8-12 parts, shrimp eggs 2-4 parts, clear water 12-15 parts, dried shelled shrimp water 2-4 parts and dried scallop water 3-5 parts. The six-delicacy filling for the dumplings has multiple seafood species and enough delicate flavor and is free of fishy smell.

The invention discloses a preparation method of a magnesium alloy surface micro-arc oxidized nano self-assembling composite protective coating, and belongs to the technical field of magnesium alloy surface treatment. The method comprises the following steps: firstly performing micro-arc oxidation on a magnesium alloy matrix surface to form a porous ceramic layer, spraying modified water-based paint on the porous ceramic layer surface to form a water-based coating so as to form a composite protective coating composed of the porous ceramic layer and the water-based coating on the magnesium alloy matrix surface. The multilayer composite protective coating formed on the magnesium alloy surface has the features of good binding force, good compactness, high hardness, high corrosion resistance, high wear resistance and the like; the preparation method is simple, convenient and environment-friendly; the composite protective coating is an expected composite protective coating of the magnesium alloy application, and the protective requirement on the magnesium alloy product in severe environment is satisfied.