63results about How to "Fast dissociation" patented technology

The invention relates to a preparation method of a composite flat separation membrane and a product thereof, wherein the composite flat separation membrane has good adsorption ability on heavy metal ions such as nickel, molybdenum, mercury and the like as well as large adsorption capacity and high adsorption efficiency and can be cleaned for recycling. The product provided by the invention is prepared from water-washed and acid-washed attapulgite by modifying attapulgite with tannic acid and compounding with polyvinylidene fluoride. The composite flat membrane provided by the invention has a good adsorption effect on the heavy metal ions such as lead, cadmium, nickel, molybdenum and the like in wastewater, the adsorption rate on nickel ions of the composite membrane in which the mass ratio of polyvinylidene fluoride to modified attapulgite is 1:0.01 is close to 40%, and the adsorption rate on mercury ions is close to 60%. The product provided by the invention integrates the advantages of a polyvinylidene fluoride separation membrane as well as the adsorption performance of attapulgite; the preparation technology is simple and low in cost, does not need special equipment and is easy to implement industrially; the membrane has stable physical performance, and the pure water flux is increased.

The invention relates to a method for preparing a pH sensitive hydrogel which has an excellent adsorbing capability on lead, cadmium, nickel and other heavy metal ions and is large in adsorption quantity, high in adsorption efficiency and sensitive to pH value of a solution, as well as a product of the pH sensitive hydrogel. The hydrogel is prepared by the following steps: washing attapulgite with water and acid; modifying the attapulgite by utilizing tannic acid; compounding with acrylic acid hydrogel. The method for preparing the adsorption type pH sensitive hydrogel has the characteristics of simple process, low cost, no special equipment and the like, and is easy for realization of industrial implementation, and the strength of the prepared gel is greatly improved. The gel can be applied to sewage treatment fields, such as electroplating industry, chemical industry and the like, can control the adsorption quantity of heavy metal ions by controlling the pH value of a solution, and can be washed and recycled.

The invention discloses a hyaluronic acid/poly(N-epsilon-acryloyl-L-lysine) dual-network aquagel capable of biological reduction and a preparation method thereof. The preparation method comprises the following steps: modifying hyaluronic acid sequentially with cystamine and glycidyl methacrylate to obtain methylacryloylated hyaluronic acid, carrying out photochemical polymerization to obtain a hyaluronic acid aquagel; carrying out freeze-drying on the hyaluronic acid aquagel, impregnating in a mixed solution of a monomer N-epsilon-acryloyl-L-lysine, a crosslinking agent N,N'-bis-acryloyl-L-cystine and a water-soluble photoinitiator, and carrying out secondary photochemical polymerization to obtain the hyaluronic acid/poly(N-epsilon-acryloyl-L-lysine) dual-network aquagel. The dual-network aquagel has interpenetrating microstructure, has the characteristics of high mechanical strength, flexible and adjustable mechanical, swelling and degradation properties and the like, and is capable of biological reduction. The method has the advantages of favorable raw material economy, simple technique and short reaction time. The obtained gel has the advantages of stable structure, high strength and the like, and has favorable application prospects.

The invention relates to a composite hollow fibrous membrane good in adsorbing of heavy metal ions such as nickel and mercury ions, large in adsorption quantity, high in adsorbing efficiency and reusable after being cleaned, and a preparation method of the composite hollow fibrous membrane. The composite hollow fibrous membrane is prepared by subjecting attapulgite to washing and pickling, utilizing tannic acid for modifying the attapulgite, compositing the modified attapulgite with polyvinylidene fluoride and adopting a dry-wet spinning process. The composite hollow fibrous membrane has good adsorbing effect on the metal ions such as cadmium, nickel and mercury ions in wastewater, and the composite membrane with a mass ratio between the polyvinylidene fluoride and the attapulgite of 1:0.01 is approximately 40% in nickel ion adsorbing rate and approximately 60% in mercury ion adsorption rate. The composite hollow fibrous membrane is good in pressure resistance and free of supports, a membrane component can be made into any sizes and shapes, loading density in the film membrane is large, membrane area and flux per unit membrane are large. In addition, the composite hollow fibrous membrane is simple in preparation process, low in cost, easy for industrial implementation and stable in physical properties.

The invention relates to a method for preparing composite hydrogel which has an excellent adsorption capability on lead, cadmium, nickel, molybdenum and other heavy metal ions, is large in adsorption amount and high in adsorption efficiency, and can be washed and recycled, as well as a product thereof. The composite hydrogel is prepared by the following steps: washing attapulgite with water and acid; modifying the attapulgite by utilizing tannic acid; and compounding with acrylamide hydrogel. The method for preparing the adsorption type polymer hydrogel has the characteristics of simple process, low cost, no special equipment, easy industrial implementation and the like, and the prepared gel strength is greatly improved.

An ore dressing technology for increasing the quality and recovery rate of ore concentrate includes such steps as crushing, rolling, grinding, and separating. Another two approaches are also disclosed.

The invention relates to a dissociation agent, a dissociation technique, a flexible display device and a production technique of the flexible display device. The dissociation agent is reductive and comprises at least one solution of oxalic acid, hydrochloric acid, hydrogen sulfide, hydrogen sulfide, ferrous sulfate, sodium sulfite, stannous chloride, potassium borohydride or sodium borohydride. The production technique is characterized in that a flexible film substrate is produced on a base plate, then a film device is produced on the flexible film substrate to form a primary body, and finally the flexible film substrate of the primary body and the base plate are dissociated through the dissociation agent to form the finished flexible display device. By adopting the dissociation agent and the dissociation technique, the flexible film substrate and the base plate can be dissociated easily, fast and conveniently. According to the flexible display device and the production technique of the flexible display device, production of sacrificial layers is avoided, and the produced substrate is directly dissociated from the base plate. The process is simple, production is convenient and dissociation is fast.

The invention provides supermolecule phospholipid based on nucleic acid bases, a preparation method of the supermolecule phospholipid and a liposome comprising the supermolecule phospholipid. The supermolecule phospholipid provided by the invention comprises a hydrophilic phospholipid head and a hydrophobic phospholipid tail, wherein the hydrophilic phospholipid head is connected with the hydrophobic phospholipid tail by nucleic acid bases capable of being complementarily identified. Compared with the prior art, the supermolecule phospholipid based on the nucleic acid bases, which is provided by the invention, is formed by simply mixing of the hydrophilic phospholipid head and the hydrophobic phospholipid tail, and the hydrophilic phospholipid head and the hydrophobic phospholipid tail are connected together by molecular identification of the nucleic acid bases, i.e. the supermolecule phospholipid is formed by connecting of multiple hydrogen bonds between the complementary bases; the supermolecule phospholipid can be further assembled in water to form the liposome; due to sensitivity of the hydrogen bonds on the subacid environment, the liposome can be rapidly dissociated under the acid condition, so as to achieve the purpose of rapidly releasing a load.

The invention provides a method for extracting Chinese yam polypeptide, and belongs to the field of biotechnology, wherein the method particularly comprises the steps: 1) peeling fresh Chinese yam, crushing, grinding into pulp, adding water, heating to 45-55 DEG C, and carrying out ultrasonic extraction to obtain an extract liquid; 2) after the extract liquid in the step 1) is denaturated, heating, adding a compound enzyme A and a compound enzyme B, and carrying out enzymatic hydrolysis; 3) carrying out inactivated treatment on the enzymatic hydrolysate of the step 2), standing, and separatingand purifying to obtain a supernatant; and 4) carrying out molecular weight classification of the supernatant of the step 3), debitterizing, concentrating and drying to obtain the Chinese yam polypeptide. The method has the beneficial effects that the method adopts an interlaced interval treatment method of dual-frequency composite ultrasound and microwave radiation to promote the denaturation ofChinese yam proteins, and greatly improves the hydrolysis efficiency and the yield of the Chinese yam polypeptide; acetic acid can eliminate the bitterness of the Chinese yam polypeptide, improves palatability and edibility, and expand an application range; the Chinese yam polypeptide has great application potential in inhibiting insuloma cells, preventing and treating diabetes, relieving glucosetolerance and lowering blood sugar.

The invention provides a method for extracting 2-methylquinoline from isoquinoline stillage residual liquor. The specific implementation method comprises the following steps: 1, coarsely distilling the isoquinoline stillage residual liquor and removing asphaltene and other insoluble substances; 2, dissolving fraction obtained by coarse distillation in a selected solvent, adding a fixed amount of a urea aqueous solution into the solvent, and quickly stirring for 30 minutes; 3, performing centrifugal separation on an obtained white adduct, leaching, and drying; 4, quickly decomposing the obtained adduct in the presence of a trace amount of a surfactant; 5, performing oil-water separation, and recovering an oil phase through the solvent to obtain 2-methylquinoline with the purity greater than 98%. The method greatly enhances the adduction capability of 2-methylquinoline and urea, improves the adduction reaction efficiency and the reaction selectivity, effectively eliminates an emulsification phenomenon during oil-water separation, and is free of three-waste emission and suitable for industrialized production.

The invention discloses water-soluble toilet paper and a preparation process thereof, and belongs to the technical field of toilet paper preparation. The method comprises the following steps: washingmixed bleached wood pulp with water, mixing the washed mixed bleached wood pulp and defibered and dispersed sodium carboxymethyl cellulose, and defibering and pulping in a pulping machine to obtain mixed pulp; screening and purifying the mixed pulp, slowly manufacturing paper with pulp by a papermaking machine, and squeezing to obtain paper sheets; and carrying out alkali treatment on the paper sheets by adopting a weakly alkaline sodium salt, drying, and rolling to obtain the water-soluble toilet paper. According to the invention, the preparation of the quick dissociation toilet paper is realized, the process is simple, the cost is low, and the preparation method is suitable for market popularization and application.

The invention discloses a kit for extracting DNAs in agarose gel by using magnetic beads and a method for high-flux rapid extraction of DNAs in agarose gel. The kit comprises a sol binding solution, a magnetic bead dispersion solution, a rinsing solution I, a rinsing solution II and an eluting solution. According to the invention, the kit is creatively used together with a 96-well plate, a magnetic plate frame for the 96-well plate, a 96-site bar magnet claw and a vortex mixer for completion of extraction, so extraction of DNAs from agarose gel can be directly carried out in the 96-well plate; in the process of an experiment, feeding of each test buffer solution can be rapidly carried out by using a multichannel automatic liquid feeding device; and one 96-well plate can be used for DNA extraction of 96 samples. With the kit and the high-flux method, when an individual experimenter operates six 96-well plates at one time, DNA extraction of 576 samples can be finished within about 70 to 80 min.

According to the estradiol release reagent and the detection kit thereof, the estradiol release reagent can influence the combination of estradiol and sex hormone binding protein, so that estradiol isreleased; the estradiol releasing reagent contains at least one of a reagent for competitively binding to the sex hormone binding protein and a reagent for reducing the binding force between estradiol and the sex hormone binding protein. Compared with the prior art, the estradiol releasing agent is used as a component of an estradiol enzymatic chemiluminescence immunoassay reagent, and estradiolcan be rapidly and effectively dissociated from albumin and sex hormone binding protein.

The invention relates to a traditional Chinese medicine for treating cancers and resisting viruses and a preparation method thereof. A formula of the traditional Chinese medicine for treating cancers and resisting viruses comprises indigowoad leaves, dutchmanspipe root, indigo naturalis, geranium wilfordii, hairyvein agrimony, hedyotis diffusa, fructus perillae, cowherb seeds, mongolian snake gourd root, herba ecliptae, szechwan Chinaberry fruit, longstamen onion bulb, curcuma zedoary, rhizoma sparganic, snakegourd fruit, ampelopsis japonica, frankincense, myrrh, rhizoma phragmitis, angelica root, radix stephaniae tetrandrae, cape jasmine, schizonepeta, ginkgo, sappanwood, Chinese angelica, salviae miltiorrhizae, rhizoma typhonii, cyrtomium fortunei, alum, brucea javanica and venenum bufonis. The traditional Chinese medicine for treating cancers and resisting viruses is applicable to treatment on 'cancers', 'Aids', 'leukemia', 'tumours' and 'liver diseases' caused by known or unknown pathogens and pathogenesis, of men, women, the aged and the young and resistance to various infectious and contagious refractory plague viruses.

The invention provides a desorption composition of an adsorption type vaccine containing CpG ODN, and the desorption composition is prepared from potassium phosphate, an M199 culture medium, magnesium chloride and Triton-100. On the other hand, the invention provides a kit for the adsorption type vaccine containing the CpG ODN adjuvant, and the kit comprises the desorption composition. On the other hand, the invention provides a method for detecting the efficacy of the adsorption type vaccine containing the CpG ODN adjuvant in vitro. On the other hand, the invention provides the composition, the kit, the detection method and application of the composition, the kit and the detection method in desorption and in-vitro potency detection of the adsorption type vaccine containing the CpG ODN adjuvant. The desorption composition provided by the invention fills the blank in the aspect of antigen dissociation of the adsorption type vaccine containing the CpG ODN adjuvant, provides a rapid and accurate method for determining the potency of the adsorption type vaccine containing the CpG ODN adjuvant, and has pioneering significance.