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 kit for extracting blood genome DNA based on a magnetic bead method. The kit comprises a cell lysis solution, a proteinase K solution, a magnetic bead dispersion solution, a first cleaning solution, a second cleaning solution and an elution solution, wherein the cell lysis solution comprises a guanidine compound, sodium chloride and a tween 20; a magnetic bead in the magnetic bead dispersion solution has the characteristics that a core is superparamagnetic ferroferric oxide, the surface is coated with silicon hydroxyl, and the particle size is 200-800nm; the first cleaning solution comprises Tris alkali, EDTA, isopropanol and water; the second cleaning solution is an ethanol solution; and the elution solution is Tris alkali or de-ionized water. The kit is simple to operate and can greatly improve working efficiency of blood genome DNA extraction; without pretreating erythrocytes, the cell lysis solution is directly adopted for pyrolyzing blood cells, and the magnetic bead dispersion solution can be added and combined with the genome DNA; and the kit is high in extraction volume and suitable for high-throughput experiments.

The invention relates to a preparation method and product of a chitosan composite flocculant with the advantages that organic contaminants in water can be effectively removed; heavy metal ions such as nickel, chromium and lead in water can be adsorbed; the adsorption quantity on heavy metal ions is great; the adsorption efficiency is high. The product is prepared by using chitosan as raw materials, using glutaraldehyde as a cross-linking agent and using attapulgite subjected to water washing and acid washing treatment and tannin modification as a modifying agent. The adsorption removal rate of the composite flocculant product on the heavy metal ions such as low-concentration nickel, chromium, lead and mercury reaches 90 percent or higher. The preparation method of the composite flocculant for adsorbing heavy metal ions has the characteristics that the process is simple; the cost is low; special equipment is not needed; the industrial implementation is easy, and the like. The consumption of chitosan by the composite flocculant is reduced; the cost is reduced.

The invention discloses a Material for thioketal bonding doxorubicin and polyphosphate and a preparation method and application thereof. The method comprises the following steps: (1) using benzyl alcohol as an initiator, ring-opening polymerization of PPEG and phosphate ester monomer to obtain P (PPEG co AEP). (2) P (PPEG-Co-AEP (Cya)) was obtained by clicking on P (PPEG-Co-AEP) with mercaptoethylamine. (3) adding activated dipropionic acid containing thioketal bond into adriamycin for amide reaction. (4) P (PPEG-Co-AEP (Cya)) was synthesized by amidation reaction to give the material containing thioketal bonded doxorubicin and polyphosphate. The nanoparticles were self-assembled with photosensitizer, and the drug was rapidly released under 660 nm near-infrared light, the drug concentration and active oxygen content in tumor site increased, and the therapeutic effect of chemotherapy and PDT was improved. The nanoparticles have potential clinical application value.

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 a dissociation method of an antigen in an aluminum adjuvant absorption type novel coronavirus inactivated vaccine. A desorption agent composition adopted by the method comprisescane sugar, magnesium chloride, potassium phosphate and polysorbate-80, wherein the dosage ratio of the cane sugar to the magnesium chloride to the potassium phosphate to the polysorbate-80 is (50-100)g: (2-6)g: (0.3-0.6)mol: (0.5-1)ml. Antigens in the aluminum adjuvant absorption type novel coronavirus inactivated vaccine are dissociated, a solution system can be stabilized, the immunocompetenceof the antigens can be protected, the absorption capacity of an aluminum adjuvant can be destroyed, and the antigens can be rapidly separated from the aluminum adjuvant, interference of an aluminum adjuvant on accurate quantification of the antigen is eliminated, the method can solve a problem of unstable biological structure of the new coronavirus epitope in the dissociation process, has the characteristics of good repeatability, high accuracy and strong specificity, and provides an important tool for evaluating the key quality attributes of the novel coronavirus inactivated vaccine.

The invention relates to a treating technology of smelting slag containing iron and silicon, and particularly provides a method for treating smelting slag through electrolytic reduction of a molten aluminum salt. The technological process of the method comprises the following steps that firstly, raw materials except the smelting slag are fully dried and dehydrated, the molten aluminum salt is putinto an electrolytic bath with a gas collecting cover for heating, an auxiliary material and the smelting slag are added in sequence to be mixed so as to form a melt, an electrode is inserted, a direct current is introduced to carry out reduction reaction at a certain temperature and voltage, a slag layer and a liquid metal layer can be guided out through a slag tap and liquid discharging respectively to form a product after the reaction is finished, and a molten salt medium can be recycled. The method has the advantages that the process is simple, the metal reduction is thorough, the slag isgreatly reduced and recycled, the physical sensible heat of the smelting slag can be utilized in the process, and energy conservation and environmental protection are achieved.

The invention relates to a mineral dissociation method based on fracture characteristic criteria, belongs to the technical field of mineral separation, and solves the problems of low accuracy of an existing mineral separation determination method, high cost of a mineral microscopic image determination method and long determination time. The mineral dissociation method comprises the following stepsthat ore particles are crushed and ground through a crushing system, and the crushed and ground ore particles are fed into an ore grinding dissociation system to be ground and dissociated; the ore particles ground and dissociated by the ore grinding dissociation system are fed into a grading screening system to be subjected to grading screening operation, and the ore particles smaller than screenholes in size are fed into a camera shooting system; the camera shooting system is used for carrying out image acquisition on fracture morphology characteristics of the fed ore particles and transmitting fracture morphology pictures of the ore particles to the image processing and calculating system; and the image processing and calculating system acquires the surface dissociation degree of the ore particles. The method can quickly and accurately obtain the dissociation degree of the ore particles, and is convenient to operate, low in cost and wide in application range.

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 belongs to the technical field of electrocatalysis, and discloses a synthesis method of a hollow oxide / phosphide carbon-coated composite material for electrocatalytic hydrogen production. The synthesis method mainly comprises the following steps: synthesizing nano silicon dioxide particles; synthesizing hollow nano cerium dioxide; synthesizing H-CeO2 / Ni@NC; and synthesizing a targetproduct H-CeO2 / Ni@NC. According to the invention, a transition metal oxide is used for regulating and controlling transition metals, so that rapid water molecule dissociation and hydrogen removal reaction are realized, and efficient catalytic hydrolysis hydrogen production reaction is realized. The hollow cerium dioxide nanospheres are composed of octahedral sub-nano cerium dioxide particles, so that the hollow cerium dioxide nanospheres have the porous characteristic, and electrolyte and gas transmission is faster; the hollow structure can expose a larger specific surface area, so that the utilization rate of active sites is improved.

A method for extracting nucleic acid from animal tissue comprises the steps that 1, an animal tissue sample and a nucleic acid extracting solution are added into a bubbling bed container, the nucleic acid extracting solution comprises magnetic microspheres capable of absorbing the nucleic acid, and the bottom of the bubbling bed container is provided with a microwell plate and an air inlet; 2, nitrogen or inert gas is fed into the bubbling bed container from the air inlet to make the animal tissue sample fully mixed and reacted with the nucleic acid extracting solution, and separated nucleic acid is absorbed by the magnetic microspheres. By means of the method for extracting the nucleic acid from the animal tissue, rapid dissociation can be conducted on the animal tissue, the nucleic acid can be efficiently separated and purified, and the method for extracting the nucleic acid from the animal tissue can be widely applied to the field of animal epidemic disease detection.

The invention discloses an inflatable life-saving backpack for marine peril escape. The inflatable life-saving backpack comprises a backpack box body, a power cavity is formed in the backpack box body, an unfolding cavity located on the upper side of the power cavity is formed in the backpack box body, a composite power device is arranged in the power cavity, an auxiliary raft unfolding device which is positioned on the upper side of the composite power device and is symmetrical front and back is arranged in the unfolding cavity, auxiliary raft descending devices are correspondingly hinged toconnecting rods on the front side and the rear side, a main raft unfolding device located on the right side of the auxiliary raft unfolding device is arranged in the unfolding cavity, and an inflationdevice located on the lower side of the main raft unfolding device is arranged in the power cavity. According to the inflatable life-saving backpack, a propeller device can be used for enabling a person in distress to quickly free an accident sea area so as to be prevented from being influenced by vortex waves generated by a sunken ship; and an automatic inflation device can enable the life-saving backpack to become a small-sized life raft, so that the person in distress is prevented from being soaked in water for a long time, and then the survival rate of the person in distress in distress is effectively improved.

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 a composite biological enzyme air treatment bionic filtering element, relates to the technical field of air purifiers, and in particular to the technical field of filtering and treating of air purifier filtering elements. The composite biological enzyme air treatment bionic filtering element comprises a composite net layer, an HEPA filtering net layer and an activated carbon cotton layer, and the composite net layer, the HEPA filtering net layer and the activated carbon cotton layer are sequentially arranged; and a water washing system is arranged on one side, far away from the HEPA filtering net layer, of the activated carbon cotton layer. The composite biological enzyme air treatment bionic filtering element achieves the aims that the structure is simple, the indoor virus cross infection is avoided, the secondary pollution to indoor air can be avoided, and peculiar smells in air can be effectively and thoroughly removed.

The invention relates to the field of rice and fish cultivation, and particularly discloses a purification device and a purification method for rice field water quality in rice and fish cultivation. The purification device comprises a shell, wherein one side of the shell is slidably connected with two dovetail sliding blocks, the shell is slidably connected with an L-shaped vertical plate through the dovetail sliding blocks, the dovetail sliding blocks are fixedly connected to one side of the vertical end of the L-shaped vertical plate, a water outlet hole is formed in the vertical plate, the water outlet hole is fixedly connected to a side wall plate of the shell, a water inlet is formed in the shell and communicated with the water outlet hole, and a filter screen is fixedly connected to the end of the water inlet of the shell. According to the invention, water can be drained and purified under the condition of different water levels in the rice field, fish can be effectively caught through the device when fish eating is needed, fish and shrimps are prevented from entering the device when fish eating is not needed, and the device is very convenient to use.

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.

The invention relates to guanidine gum fracturing fluid gel capable of reducing pH dependence, a guanidine gum fracturing fluid system and a preparation method and application thereof. The fracturing fluid gel is prepared from the following components in percentage by weight: 0.01 to 0.2 percent of nano material, 0.1 to 0.5 percent of guanidine gum, 0.1 to 0.5 percent of organic boron-titanium cross-linking agent and the balance of water. The fracturing fluid gel is more stable in network structure and good in temperature resistance and shear resistance. The invention further provides the preparation method and application of the fracturing fluid gel. According to the guanidine gum fracturing fluid system, the dependence on pH is reduced, and the damage degree of the high pH value to a reservoir is reduced.

The invention relates to a multi-mode luminous carbon dot as well as a preparation method and application thereof. The preparation method of the multi-mode luminous carbon dots comprises the following steps that: fibroin, strong base and water are mixed according to a mass ratio of 1: (0.1-10): (10-500) to form a mixed solution; the mixed solution is placed in a microwave reactor to be subjected to a microwave reaction, the microwave power ranges from 100 W to 1000 W, and the reaction time ranges from 0.5 min to 10 min; and a product obtained after the microwave reaction is purified and dried.

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.