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41results about How to "Preparation method saves time" patented technology

Method for preparing high molecular weight biodegradable polyester by combined chain extension

The invention relates to a method for preparing biodegradable polyester. Firstly, melt polycondensation is conducted through diol and dicarboxylic acid and a low molecular weight polyester prepolymer with number average molecular weight between 2, 000 and 20, 000 or intrinsic viscosity below 0.64dL / g is prepared; binary oxadiazoline and diacyl bis-caprolactamate are combined to extend chain, and chain extension is carried out at a certain temperature; and the biodegradable polyester is obtained. The number average molecular weight of polybutylene adipate (PBA) can reach up to 39, 000 and the intrinsic viscosity to 1.13dL / g. For poly (butylene succinate) (PBS) with relatively high melting point, the intrinsic viscosity after chain extension is up to 0.99dL / g.
Owner:BEIJING UNIV OF CHEM TECH

Preparation method for hydrophilic magnetic nano material for enrichment of glycopeptides

The invention relates to a preparation method for a hydrophilic magnetic nano material for the enrichment of glycopeptides, belongs to the fields of nano materials and bio-separation, and aims at achieving the selective enrichment of the glycopeptides. The method is characterized in that a one-pot method is used for synthesizing carbohydrates, such as chitosan, cellulose and agarose, and the hydrophilic magnetic nano material compatible with ferroferric oxide, and due to the existence of -NH2 and -OH polar groups in carbohydrate molecules in the material, the material is has the certain hydrophilicity, and the glycopeptides can be specifically enriched and purified in complex hydrolyzed proteins. According to the method, good adsorption effects of the prepared enrichment material are ensured; in addition, the preparation method has the advantages of time saving, low cost, convenience in operation and the like, and is particularly applied to the large-scale enrichment of the glycopeptides, and a large amount of material can be prepared.
Owner:XINJIANG UNIVERSITY

Anticorrosive composition without any chemically synthesized preservative and application thereof, and cosmetics prepared from anticorrosive composition

The invention discloses an anticorrosive composition without any chemically synthesized preservative and application thereof, and cosmetics prepared from anticorrosive composition. The anticorrosive composition comprises dibasic alcohols and organic acids in a weight ratio of (15-25):(1-5). The anticorrosive composition has the characteristics of favorable anticorrosive property, low irritation, no side effect, favorable stability, high antibacterial capacity, simple preparation technique and the like, is beneficial to popularization and application, and can be applied to cosmetics and skin reagents.
Owner:HUAANTANG BIOTECH GRP CO LTD

Titanium oxide micro-nanotube with visible-light catalysis effect, and preparation method thereof

The present invention discloses a titanium oxide micro-nanotube with a visible-light catalysis effect, and a preparation method thereof. The micro-nanotube is tubular titanium dioxide doped with sulfate in situ, the tube wall of the micro-nanotube is attached with nano-sheets formed by nanoparticles, and nano-mesopores are arranged between the nanoparticles. The preparation method comprises: mixing and stirring titanium sulfate hydrate, methanol and glycerol to obtain a mixing solution; then adding ether to the mixing solution, and stirring to obtain a precursor solution; placing the precursor solution in a sealed state, carrying out a reaction for 16-40 hours at a temperature of 105-115 DEG C, and then cooling to the room temperature to obtain a gel material; adding ethanol to the gel material, and stirring to obtain a gel mixture; carrying out treatments of ultrasound, centrifugation, washing and drying for the gel mixture to obtain an intermediate product; placing the intermediate product in the environment with the temperature of 450-550 DEG C to carry out annealing for at least 2 hours to prepare the titanium oxide micro-nanotube with the visible-light catalysis effect. The titanium oxide micro-nanotube of the present invention has significant photocatalytic properties in the ultraviolet region and the visible-light region, and can be widely used for degradation of organic pollutants.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Capillary effect assisted non-covalent assembled coating layer and preparation method thereof

The invention relates to a capillary effect assisted non-covalent assembled coating layer and a preparation method thereof. The coating layer is prepared from the raw materials of an inorganic nano material and flexible high-molecular polymer. The preparation method comprises the steps: pretreating a substrate material to obtain the pretreated substrate material; dipping the pretreated substrate material into an inorganic nano material solution to make the inorganic nano material form ultrahigh-quantity adsorption on the complex substrate surface under the capillary force assistance and drying; dipping an intermediate assembly into a flexible high-molecular polymer solution to achieve covalent bond assembling of the flexible high-molecular polymer and drying; repeating to obtain the high-load coating layer. The coating layer disclosed by the invention greatly exceeds deposition load capacity of traditional non-covalent assembling; meanwhile, stability of the assembled coating layer ismaintained; furthermore, an actual application field such as electromagnetic shielding of a nano-micro scale functional coating layer is expanded. In addition, the preparation technology disclosed bythe invention is simple, production cost is low, and the prepared coating layer has very good controllability on membrane structures and thickness.
Owner:DONGHUA UNIV

Functionalized biological hybrid micro-nano motor and preparation method thereof

InactiveCN112375560AUniform sizeEnhanced magnetic responsiveness and magnetic motion controlFluorescence/phosphorescenceLuminescent compositionsMolecular biologySpore
The invention belongs to the field of material technology and micro-nano manufacturing, and relates to a functionalized biological hybrid micro-nano motor and a preparation method thereof. The functionalized biological hybrid micro-nano motor comprises a biological entity inner core, a magnetic nanoparticle coating and a probe layer. According to the invention, fungal spores, pollen and micro / nano-scale plant seeds are selected as the inner core, so that the inner core is easy to obtain or massively culture, and the material is uniform in size and easy to control; and the inner core and the nano-particles are hybridized through a step-by-step coating method, and a probe is loaded on the surface of the nano-coating. The functionalized biological hybrid micro-nano motor can actively move under accurate control, is very easy to observe, and overcomes the defects in the prior art.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Production method of humic acid-containing water-soluble fertilizer capable of preventing greenhouse moss

The invention relates to a production method of a humic acid-containing water-soluble fertilizer capable of preventing greenhouse moss. The humic acid-containing water-soluble fertilizer capable of preventing greenhouse moss is obtained by mixing macroelement fertilizers, humic acid-containing organic matters, algicides, and the like in a closed environment. Breeding of moss in greenhouses can be prevented and the moss can be prevented from contending with commercial crops for nutrients by adding the algicides, thus achieving the maximum utilization rate of the fertilizer on crop absorption and reducing the fertilizer cost.
Owner:刘彬

Cr2O3/ZTA composite powder and ceramic and preparing method thereof

The invention relates to a Cr2O3 / ZTA composite powder and ceramic and a preparing method thereof. The preparing method comprises the following steps that alumina powder, zirconium oxide powder and Cr(NO3)3.9H2O are mixed and subjected to ball milling, and mixed paste is obtained, wherein the mass fraction of alumina powder is 80-85% of the total mass of zirconium oxide and alumina, the balance 15-20% is zirconium oxide powder, and the adding amount of Cr(NO3)3.9H2O, converted base on Cr2O3, is 0-0.8% of the total mass of zirconium oxide and alumina; the obtained mixed paste is dried and then roasted at 400-600 DEG C, and Cr2O3 / ZTA powder is obtained. The Cr2O3 additive is introduced in the mode of precursor Cr(NO3)3.9H2O, and thus Cr2O3 can be more evenly dispersed into ZTA powder.
Owner:SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI

Hafnate luminescent material and preparation method thereof

The invention discloses a hafnate luminescent material which has the general formula of Y2-xHf7O17:Eux, wherein, X is 0.01-0.3; the invention also discloses a method for preparing the hafnate luminescent material, which comprises the steps: solid yttrium nitrate and hafnyl chloride are put into a container by taking the mol ratio of 3:25-3:10 as the mixture ratio and dissolved by distilled water; Eu(NO3)3 solution is added into the mixture, and the molar weight of Eu is 1%-30% of the molar weight of Y; the pH value of the solution is regulated to be 1 by using nitric acid; the blended fuel of glycin and urea is added into the solution, and ethylenediamine tetracetic acid (EDTA) having the mass accounting for millesimal of the total mass of the raw material is taken as chelating agent and added into the solution; the mixture is burnt in a furnace at the temperature of 450 DEG C to obtain precursor, and then sintered for 2 hours at 800 DEG C in a high temperature furnace, thereby obtaining the Y2-xHf7O17:Eux material. The material obtained by the invention can be used in an X-ray intensifying screen of high-energy physics, medical use or safety inspection. The preparing method has the advantages of safety, time-saving, energy-efficiency, etc.
Owner:EAST CHINA NORMAL UNIV

Preparation method of shape memory polymer material with drug release function, product obtained therethrough, and application of product

The invention discloses a preparation method of a shape memory polymer material with a drug release function, a product obtained therethrough, and an application of the product. The preparation methodcomprises the following steps: (1) dispersing a drug and an amphiphilic triblock copolymer with a functionalized terminal double bond in a solvent, forming a nano-micelle or a nano-reverse micelle under the action of similar intermiscibility, and wrapping the drug in the nano-micelle or the nano-reverse micelle; and (2) adding a monomer and an initiator into the reaction system in step (1), and carrying out in-situ free radical polymerization to form the shape memory polymer material with the drug release function. The method has the advantages of simple operation steps, convenience and timesaving, and the obtained product has the advantages of high drug loading capacity, uniform drug distribution, high drug release controllability, high modulus, high mechanical strength, high recovery speed and high recovery stress, and overcomes the defects of the shape memory polymer material with the drug release function, which is prepared by existing swelling methods.
Owner:LINYI UNIVERSITY

Synthetic method of maleimide phosphatidyl ethanolamine

The invention discloses a preparation method of a compound as shown in the formula I. The method comprises the following steps: (1) M-aminobenzoic acid and maleic anhydride are mixed and reacted to obtain the compound as shown in the formula II. (2)The compound of formula II and acetic anhydride are mixed and reacted to obtain the compound as shown in the formula III.(3) The compound of the formula III, N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl)-carbonyl diimine hydrochloride are mixed and reacted to obtain the compound as shown in the formula IV. And (4) the compound of the formula IV and phosphatidyl ethanolamine are reacted in mixed solvents to obtain the compound as shown in the formula I. The mixed solvent consists of chloroform, methanol and water, the volume ratio thereof is 9: 1: 0.1-9: 0.5; wherein, R represents aliphatic hydrocarbon of C11\C13\C15\C17.
Owner:SHANGHAI INST OF PHARMA IND

Production method of biological organic fertilizer having moss killing effect

The present invention relates to a production method of a biological organic fertilizer having a moss killing effect, wherein an organic molecular material, a microbial agent, an algae killing agent and the like are metered and conveyed to a material bin through a belt, extrusion granulation is performed, and the granulated product is screened to obtain the biological organic fertilizer having the moss killing effect. According to the present invention, the algae killing agent is added so as to prevent the moss breeding in greenhouses and paddy fields and avoid nutrient and illumination competition between the moss and crops, such that the fertilizer utilization rate is improved in the case that the crops enjoy sufficient sunshine, and the fertilizer use cost is reduced.
Owner:刘彬

Magnetic carbon nanotube and method for extracting lean meat essence from pork

The invention discloses a magnetic carbon nanotube and a method for extracting lean meat essence from pork. The magnetic carbon nanotube Fe3O4@ Cys @ CNT is prepared by from FeSO4.7H2O, L-cysteine (Cys) and carbon nanotubes (CNT) as raw materials. The magnetic carbon nanotube Fe3O4@ Cys @ CNT is used as an adsorbent to extract the lean meat concentrate (ractopamine and clenbuterol hydrochloride) from the pork. The effective enrichment and separation of the lean meat essence in a pork sample to be tested is realized, and the sensitivity of the existing method for detection of the lean meat essence in the pork can be greatly improved.
Owner:JILIN INST OF CHEM TECH

Composition for promoting hair growth

The invention provides a composition for promoting hair growth. The composition is characterized in that an active ingredient in the composition is a panax notoginseng extractive. An extraction methodof the panax notoginseng extractive is simple, convenient and time-saving; hair growth is easily promoted; and hair is relatively healthy and glossy.
Owner:上海瑞帝安生物科技有限公司

Graphite-phase carbon nitride photocatalyst for sewage treatment and preparation method thereof

The invention discloses a graphite phase carbon nitride photocatalyst for sewage treatment and a preparation method thereof, the raw materials of the catalyst are melamine and hexamethylenetetramine in a mass ratio of 4200: (50-1000), and the preparation method of the catalyst comprises the following steps: carrying out a hydrothermal reaction on melamine and hexamethylenetetramine in a closed environment to obtain a novel precursor; carrying out high-temperature calcination on the modified precursor to obtain modified graphite phase carbon nitride; a photocatalytic degradation activity test result of the photocatalyst shows that the activity is improved by 8.5 times compared with that before modification, the modified graphite-phase carbon nitride introduces defects, the interlayer spacing is increased, the band gap is narrowed, the modified graphite-phase carbon nitride has stronger photocurrent response, and carrier recombination is inhibited.
Owner:国家电投集团山西铝业有限公司 +1

Production method for amino-acid-containing water soluble fertilizer capable of preventing greenhouse moss

The invention relates to a production method for amino-acid-containing water soluble fertilizer capable of preventing greenhouse moss. The amino-acid-containing water soluble fertilizer capable of preventing the greenhouse moss is obtained by mixing major element fertilizer, amino-acid-containing organic matter, an algicide and the like in a sealed environment. By adding the algicide, the propagation of the moss in a greenhouse can be prevented, it is avoided that the moss and commercial crops fight for nutrient substances, so that the maximum utilization rate of the fertilizer on adsorption of crops is achieved, and the fertilizer utilization cost is reduced.
Owner:刘彬

Method for preparing high-dispersion graphene loaded Zn-base metal-organic framework composite materials

The invention discloses a method for preparing high-dispersion graphene loaded Zn-base metal-organic framework composite materials. The method includes steps of A, uniformly mixing graphene oxide solution and chitosan solution with each other to obtain brown solution, transferring the solution into water bath at the temperature of 80-95 DEG C, stirring the solution for 4-6 h, centrifuging productsand ultrasonically dispersing the products in N,N-dimethylformamide to obtain high-dispersibility graphene; B, adding 200-500 mg of Zn(NO3)2 6H2O, 200-500 mg of 2-methylimidazole, 1-4 g of PVP (polyvinyl pyrrolidone) and 150-500 ml of methyl alcohol into the high-dispersibility graphene obtained at the step A, carrying out reaction for 10-13 h, and centrifuging, washing and drying reaction precipitates to obtain the high-dispersion graphene loaded Zn-base metal-organic framework composite materials. The graphene oxide solution and the chitosan solution have equal volumes. The method has the advantage that the high-dispersion graphene loaded Zn-MOF (metal-organic framework) composite materials prepared by the aid of the method have potential application values in multiple aspects.
Owner:ANYANG NORMAL UNIV

Nanometer fluorination catalyst for preparing R152a and preparation method of nanometer fluorination catalyst

The invention relates to a nanometer fluorination catalyst for preparing R152a and a preparation method of the nanometer fluorination catalyst. Specifically, the invention relates to a nano-catalyst for catalytic preparation of R152a and a preparation method of the nano-catalyst. The precursor of the nanometer fluorination catalyst is prepared from a metal chromium salt, a metal cobalt salt, a metal zinc salt, a metal lanthanum salt, a complexing agent and a surfactant, wherein a molar ratio of the metal chromium salt to the metal cobalt salt to the metal zinc salt to the metal lanthanum saltis 1: (0.10-0.20): (0.05-0.18): (0.20-0.30); and the specific surface area of the nanometer fluorination catalyst is 465-500 m<2> / g, and the pore volume of the nanometer fluorination catalyst is 0.7-0.9 mL / g. The nanometer fluorination catalyst provided by the invention has higher catalytic activity and longer service life.
Owner:NORTH & SOUTH BROTHER PHARMACY INVESTMENT CO LTD

Production method for amino-acid-containing liquid water soluble fertilizer capable of preventing greenhouse moss

The invention relates to a production method for amino-acid-containing liquid water soluble fertilizer capable of preventing greenhouse moss. Major element fertilizer, amino-acid-containing organic matter, an algicide and water are added in a reaction kettle according to a certain proportion, and the amino-acid-containing liquid water soluble fertilizer capable of preventing the greenhouse moss is obtained after the mixture is fully dissolved. By adding the algicide, the propagation of the moss in a greenhouse can be prevented, it is avoided that the moss and commercial crops fight for nutrient substances, so that the maximum utilization rate of the fertilizer on adsorption of crops is achieved, and the fertilizer utilization cost is reduced.
Owner:刘彬

Production method of organic fertilizer having moss killing effect

The present invention relates to a production method of an organic fertilizer having a moss killing effect, wherein a lot of element fertilizers, organic matters, an auxiliary material, an algae killing agent and the like are metered and conveyed to a granulation roller through a belt, granulation is performed, and the granulated product is subjected to drying, cooling, screening and other processes so as to obtain the organic fertilizer having the moss killing effect. According to the present invention, the algae killing agent is added so as to prevent the moss breeding in greenhouses and paddy fields and avoid nutrient and illumination competition between the moss and crops, such that the fertilizer utilization rate is improved in the case that the crops enjoy sufficient sunshine, and the fertilizer use cost is reduced.
Owner:刘彬

Food-grade antioxidant and preparation method thereof

The invention discloses a food-grade antioxidant and a preparation method thereof, and relates to the technical field of foods. In the invention, a mixed component of dandelions and purslane is subjected to biological enzyme pretreatment and an ultrasonic-microwave synergistic extraction method, and lotus leaves are subjected to biological enzyme and ultrasonic-microwave synergistic extraction. The antioxidant composed of three both medicinal and edible raw materials has synergistic effect, and can obviously remove DPPH free radicals. Animal experiments prove that the antioxidant can inhibit lipid peroxidation reaction by improving the activity of antioxidant enzyme, further improves the antioxidant effect of organisms, and finally inhibits the damage of free radicals to cells. The antioxidant t has the characteristics of high extraction efficiency, simple preparation method and time saving, and is suitable for wide popularization and application.
Owner:洛阳采方医药科技有限公司

Preparation method of transparent ceramic glitter material

The invention discloses a preparation method of a transparent ceramic glitter material. A general formula of the material is HfO2-Gd2O3:Eu<3+> and the material is prepared through the following steps:dissolving Gd2O3 in HNO3 to prepare Gd(NO3)3 solution of 1-2mol / L, and dissolving Eu2O3 in HNO3 to prepare Eu(NO3)3 solution of 0.08-0.1mol / L; placing HfOCI2 powder in a beaker and using distilled water for dissolution, adding the Gd(NO3)3 solution, stirring evenly, then adding the Eu(NO3)3 solution, and using nitric acid for adjusting the pH value of the solution to be 1-2; adding mixed fuel ofglycine and urea in the solution while stirring, heating for 20-30 minutes at temperature of 200 DEG C for removing water after stirring with strong force, burning for 40-70 minutes in a retortfurnaceof 450 DEG C, and stirring for 2 hours in a high temperature furnace at the temperature of 800 DEG C, then obtaining the material. The prepared material can be used for intensifying screens of X raysfor medical use or security inspection in high energy physics, and the preparation method has the characteristics of being safe, saving time and energy, and the like.
Owner:EAST CHINA NORMAL UNIVERSITY

Doxercalciferol and preparation method thereof

PendingCN113666858AMild responseStable yieldOrganic chemistry methodsCombinatorial chemistryDoxercalciferol
The invention provides a doxercalciferol and a preparation method thereof. The preparation method comprises the following steps: sequentially performing sulfonylation reaction, methoxy-bridged ring forming reaction and oxidation reaction on vitamin D2 serving as an initial material to obtain an intermediate 1a-OH-3, 5-cyclized vitamin D2, the intermediate 1a-OH-3, 5-cyclized vitamin D2 is sequentially subjected to a ring-opening reaction, a Diels-Alder reaction, a separation and purification reaction to obtain a doxercalciferol crude product, and a recrystallization reaction is performed on the doxercalciferol crude product to obtain the doxercalciferol. According to the doxercalciferol and the preparation method thereof, the preparation method is simple in process and stable in yield, the prepared product is high in purity, and industrial production is facilitated.
Owner:JIANGSU SIHUAN BIOENGINEERING PHARM CO LTD

Synthetic method of maleimide phosphatidyl ethanolamine

The invention discloses a preparation method of a compound as shown in the formula I. The method comprises the following steps: (1) M-aminobenzoic acid and maleic anhydride are mixed and reacted to obtain the compound as shown in the formula II. (2)The compound of formula II and acetic anhydride are mixed and reacted to obtain the compound as shown in the formula III.(3) The compound of the formula III, N-hydroxysuccinimide and 1-ethyl-3-(3-dimethylaminopropyl)-carbonyl diimine hydrochloride are mixed and reacted to obtain the compound as shown in the formula IV. And (4) the compound of the formula IV and phosphatidyl ethanolamine are reacted in mixed solvents to obtain the compound as shown in the formula I. The mixed solvent consists of chloroform, methanol and water, the volume ratio thereof is 9: 1: 0.1-9: 0.5; wherein, R represents aliphatic hydrocarbon of C11\C13\C15\C17.
Owner:SHANGHAI INST OF PHARMA IND CO LTD

Production method of macroelement water-soluble fertilizer preventing greenhouse moss

The invention relates to a production method of a macroelement water-soluble fertilizer preventing greenhouse moss. A macroelement fertilizer, trace elements, medium elements, algicide and the like are mixed in a closed environment to obtain the macroelement water-soluble fertilizer preventing the greenhouse moss. By adding the algicide, breeding of the moss in a greenhouse can be prevented, the moss is prevented from struggling for nutritional matters with economic crops, so that a maximum utilization rate of the fertilizer on crop absorption can be realized, and the fertilizer application cost is reduced.
Owner:刘彬

Fluorine modified activated carbon electrode surface composite treatment method and application thereof

The invention discloses a fluorine-modified activated carbon electrode surface composite treatment method and application thereof. The method comprises the steps: adding a binder, a conductive agent and activated carbon into a dispersing agent, performing magnetic stirring until the binder is dissolved, and obtaining mixed slurry; carrying out ball milling treatment on the mixed slurry to obtain electrode slurry; coating a carbon-coated aluminum foil with the electrode slurry, and sequentially carrying out forced air drying and vacuum drying until the solvent is dried to obtain an electrode plate; treating the surface of the electrode plate by adopting a low-temperature plasma technology; and depositing a metal oxide with the thickness of 1-10nm on the electrode plate subjected to surface treatment by adopting an atomic layer deposition technology to obtain the fluorine modified activated carbon electrode subjected to composite treatment. The method is simple, efficient and rapid, can be used for preparing the high-energy-density activated carbon electrode supercapacitor in batches, and has a good market application prospect.
Owner:杭州阳名新能源设备科技有限公司

Carbon-loaded multi-metal multistage material as well as preparation method and application thereof

The invention belongs to the technical field of multi-stage structure composite materials, and particularly relates to a carbon-loaded multi-metal multi-stage material and a preparation method and application thereof. The preparation method comprises the following steps: (1) adding a solvent into an inner-layer template for dissolving, and adding a first metal salt and a second metal salt for chemical precipitation reaction to form a multiphase metal precipitate; (2) continuously adding a polymer reaction monomer, and carrying out a polymerization reaction on the surface of the multiphase metal precipitate to form a polymer-coated multiphase metal precipitate; and (3) carbonizing the polymer-coated multi-phase metal precipitate to obtain the carbon-supported multi-metal multistage material. The invention provides a carbon-loaded multi-component sulfide multistage composite material synthesized in a surface-assisted manner, the purpose of controllable micro-nano structure is achieved based on different thermal behaviors of surface and internal components, the prepared carbon-based material has the advantages of good conductivity, rich reaction sites and the like, and when the carbon-based material is used as an oxygen reduction and oxygen evolution electrocatalyst, good electrochemical properties are provided.
Owner:HUAZHONG UNIV OF SCI & TECH

Production method of trace-element water-soluble fertilizer preventing greenhouse moss

The invention relates to a production method of a trace-element water-soluble fertilizer preventing greenhouse moss. Trace elements, algicide and the like are mixed in a closed environment to obtain the trace-element water-soluble fertilizer preventing the greenhouse moss. By adding the algicide, breeding of the moss in a greenhouse can be prevented, the moss is prevented from struggling for nutritional matters with economic crops, so that a maximum utilization rate of fertilizer on crop absorption can be realized, and the fertilizer application cost is reduced.
Owner:刘彬
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