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201results about How to "Appropriate area" patented technology

Anti-microbial healing-promoting hydrogel dressing and preparation method therefor

The invention discloses an anti-microbial healing-promoting hydrogel dressing and a preparation method therefor. The main ingredients of the dressing are water-soluble high-molecular polymers, functional polymers with pseudoplastic, anti-microbial agents and water. The above ingredients are dissolved into a whole after a series of technologies. The solution is poured into a mold, and the hydrogel dressing is obtained after curing and irradiation disinfection. The results of wound healing experiments and in vitro anti-microbial experiments show that the hydrogel dressing can promote wound healing effectively, and has good bacteriostatic activity to multiple bacteria (the sterilizing rate is above 70%). The anti-microbial healing-promoting hydrogel dressing is better than existing hydrogel dressings obviously, and has advantages of substantial anti-microbial curative effects, transparency, high water content, simple preparation method, pure product, nontoxicity, innocuousness, no stimulation, good biocompatibility and the like. The hydrogel dressing is suitable for large-area promotion and application.
Owner:SAIKE SAISI BIOTECH CO LTD

High-activity iron-based low-temperature Fischer-Tropsch synthesis catalyst and preparation method thereof

The invention belongs to the field of chemical catalysts, and specifically relates to a high-activity iron-based low-temperature Fischer-Tropsch synthesis catalyst and a preparation method thereof. The low-temperature Fischer-Tropsch synthesis iron-based catalyst is prepared by subjecting a skeleton iron material to low-temperature carbonization at a low temperature under a high carbon monoxide partial pressure and contains high-activity epsilon-Fe2C nano particles. The provided Fischer-Tropsch synthesis catalyst has an extremely high catalytic activity at a low temperature (less than 200 DEG C), wherein the catalytic activity is prominently higher than that of reported low-temperature iron-based Fischer-Tropsch synthesis catalysts. At the same time, the stability of the provided catalyst is high, and thus the catalyst can meet the production requirements.
Owner:FUDAN UNIV

Method for synthesizing composite material of organic - inorganic bentonite

This invention discloses a method for synthesizing organic-inorganic bentonite composite. The method comprises: utilizing bentonite as the main material, performing inorganic modification through cation-exchange reaction by using hydroxyl aluminum aqueous solution, torrefying to obtain hydroxyl-containing aluminum-pillared bentonite with high porosity and high specific surface area, and reacting between the hydroxyls and silylation agent to graft silane groups onto aluminum-pillared bentonite and obtain organic-inorganic bentonite composite. The organic-inorganic bentonite composite has both the advantages of inorganic pillared bentonite such as high porosity and high specific surface area, and those of organic bentonite such as high organic carbon content and high hydrophobicity thus can be used to treat organic waste gases and wastewater with a good effect by surface adsorption as well as distribution.
Owner:ZHEJIANG UNIV

Optical waveguide for touch panel and touch panel using the same

An optical waveguide for a touch panel and a touch panel using the same. A lens portion 30 formed in an end portion of each light-emitting core 3 and each light-receiving core 3 has a tapered portion 31 such that the width thereof gradually increases toward an end surface thereof. The end surface is an arcuately curved surface 32 which bulges outwardly and has a radius of curvature R. When the tapered portion 31 has a length L not less than 800 μm, a taper angle α is in the range of 2 to 20 degrees, and (A) is satisfied. When the tapered portion 31 has a length L not less than 400 μm but less than 800 μm, the taper angle α is in the range of 4 to 16 degrees, and condition (A) is satisfied.(A)0.5×L×tan(α / 2)<R<2.5×L×tan(α / 2).
Owner:NITTO DENKO CORP

Method for separating and purifying biodiesel

The invention discloses a method for separating and purifying biodiesel. The method comprises the steps of: 1) performing degassing and distillation operation on a crude biodiesl product by a film evaporator to obtain the biodiesl of which the content of methyl ester is over 96 percent; and 2) performing alkaline soil deacidification on a product of separation treatment in the step 1) to obtain purified biodiesel of which an acid value satisfies the national standard. By the method, alkaline solution is absorbed on the surface of alkaline soil for a deacidification reaction, which effectively avoids emulsification; the method has simple operation conditions, does not need to strictly control conditions such as stirring and the like; components such as glycerol and soap can be absorbed after the reaction is finished; the obtained methyl ester does not need to be purified again, does not need to be dehydrated, is easy to separate, and has high yield; and a purified product has high quality. The method has the advantages of simple process flow, low equipment cost and energy consumption, and no wastewater pollution, and is suitable to be popularized and applied in a large area.
Owner:BEIJING UNIV OF CHEM TECH

Iron group fischer-tropsch synthesis catalyst and its preparation method

The invention relates to an iron group fischer-tropsch synthesis catalyst and its preparation method. The iron group fischer-tropsch synthesis catalyst comprises the components of Fe, Cu, K, Li and SiO2 with weight proportion of 100:0.1-15:0.1-10:0.05-10:2-50. On the premise of good fischer-tropsch synthesis activity and methane selectivity, the iron group fischer-tropsch synthesis catalyst is capable of reducing water gas shift reaction activity in a system and enhancing the effective utilization rate of CO reaction gas.
Owner:CHNA ENERGY INVESTMENT CORP LTD +2

Preparation method for carbon dry gel

ActiveCN102104157AGood application effectHigh oxygen reduction reactivityCatalyst carriersCell electrodesNitrateSulfate
The invention relates to a carbon carrier of a proton exchange membrane fuel cell, in particular to a preparation method for carbon dry gel. The carbon dry gel is prepared by m-dihydroxybenzene, formaldehyde and a metal salt serving as raw materials, wherein the metal salt comprises a soluble nitrate, a carbonate, a sulfate, an acetate or a halide of one or more metal elements in an IVB group, a VB group, a VIB group, a VIIB group, a VIII group, an IB group and an IIB group; the m-dihydroxybenzene serving as a precursor and the formaldehyde are in the mol ratio of 2:1; the m-dihydroxybenzene and the metal salt are in the mol ratio of 10:1-500:1; and a high-stability carbon carrier is prepared by graphitizing mixed organic carbon dry gel at the high temperature of 1,500 to 3,500 DEG C. When serving as an anti-corrosion carbon material and being used as a cathode catalyst carrier of the proton exchange membrane fuel cell, the carbon dry gel has high anti-corrosion performance and high stability in an acidic and high-potential environment of cell operation.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Condensating reductive alkylation catalyst, preparation method and uses thereof

The invention provides a condensation reductive alkylation catalyst and preparation method and use thereof. The catalyst pertains to copper-based catalyst, and is prepared by coprecipitation method with acid or salt thereof as precipitator. The preparation method is energy saving and environment friendly for including no impurity natrium, which avoids environmental protection problem existing in catalysis preparation technology with traditional precipitation method and reduces washing water use. The specific surface area of the catalyst is 30.0 to 75.0m<2> / g and pore volume 0.08 to 0.15ml / g. The catalyst can be used in condensation technology of RT Base and aliphatic ketone to inhibit an unnecessary side reaction in production of anti-aging agent 4010NA and 4020, especially to a reaction of aliphatic ketone alkylation regent hydrogenated to corresponding mellow.
Owner:SINOPEC NANJING RES INST OF CHEM IND CO LTD

LED with two-dimensional photonic crystals

The invention relates to a low cost LED with two-dimensional photonic crystals, and aims to solve the problem that the light-emitting efficiency is low and high production cost, and the problem that non-radiative recombination increases because a semiconductor active layer is damaged by adopting the conventional etching, photo-etching or imprinting technique in the conventional LED. The LED comprises a substrate, a buffer layer, an N-type doped semiconductor layer, an active layer, a P-type doped semiconductor layer, a current diffusing layer, a P-type electrode and an N-type electrode, wherein two-dimensional photonic crystal layers are covered on the interface between the N-type doped semiconductor layer and the air and the interface between the P-type doped semiconductor layer and the air; and the two-dimensional photonic crystal layer adopts a single-layer micro-sphere ordered arrangement structure, and the grain size of the micro-spheres is 50nm to 5 mu m. In the LED, by using the two-dimensional photonic crystal layer, a refraction index difference between the semiconductor and the outside is improved; and by utilizing the weak photonic crystal effect, a light-emitting efficiency is improved by 10 to 20 percent compared with that of the conventional LED. The LED of the invention is suitable for large-area and industrialized production.
Owner:HARBIN INST OF TECH

Fireproof vacuum insulation panel for building external thermal insulation system and preparation method thereof

Provided are a fireproof vacuum insulation panel for a building external thermal insulation system and a preparation method thereof. The fireproof vacuum insulation panel is composed of gas-phase silica silicon carbide powder, glass fibers and a glass fiber aluminum plastic compound package bag, can be mixed with admixture, has the double functions of thermal insulation and fire resistance and can effectively resolve the problems of thermal insulation and fire resistance in an existing building external thermal insulation system. The gas-phase silica, the admixture, the silicon carbide and the glass fibers are placed in a smashing and mixing machine to be smashed and evenly mixed, then mixed materials are poured in a square hard mould to be pressed and formed, the formed compound core materials are placed in the glass aluminum plastic compound package bag to be vacuumed until the vacuum degree is smaller that 1 Pa, and the fireproof vacuum insulation panel is obtained by package. Thus, the fireproof vacuum insulation panel is simple in process, good in high temperature resistance and fireproof performance, low in heat conductivity coefficient, free of thermal treatment, short in period, low in cost, capable of effectively substituting organic cystosepiment in the existing building external thermal insulation system, and suitable for large-area preparation and large-scale production.
Owner:大连建科北方化学有限公司

Chitosan hemostatic sponge made from maggot shells as well as preparation method and application thereof

The invention discloses a chitosan hemostatic sponge made from maggot shells as well as a preparation method and application thereof. The chitosan hemostatic sponge is obtained by carrying out the following steps of: pulverizing cleaned and dried maggot shells; removing metal ions with a hydrochloric acid solution; removing protein with a sodium hydroxide solution; decoloring with a hydrogen peroxide solution; carrying out gradient deacetylation with the sodium hydroxide solution; drying to obtain powder; then dissolving the powder into a dilute acetic acid solution; freeze drying; and sterilizing. The product can effectively activate partial blood platelets, adsorb erythrocytes, promote the generation of partial thrombase, exert quick and stable hemostatic activity when the product is adhered to a partial tissue wound, have the effects of selective antibiosis and cell proliferation promotion and favorable effects of controlling moderate traumatic hemorrhage and tissue organ diffuse surface hemorrhage, can be suitable for external emergency treatment of traumatic hemorrhage, particularly suitable for implantation hemostasis in a surgery, and also has the functions of preventing wound infection of a wound surface and promoting healing of the wound surface.
Owner:FIELD OPERATION BLOOD TRANSFUSION INST OF PLA SCI ACAD OF MILITARY

A switch cabinet fault diagnosis method based on an on-line indirect temperature measurement mode

The invention discloses a switch cabinet fault diagnosis method based on an on-line indirect temperature measurement mode. Judgment of fault states of the switch cabinet is conducted through temperature real-time monitoring carried out on an indirect temperature measurement point and an environmental temperature measurement point used for installation of temperature measurement sensors on the outside of the switch cabinet. According to the method, physical modeling and measurement point selection are firstly carried out; a temperature theta[2](t) of the indirect temperature measurement point and the temperature theta[0](t) of the environmental temperature measurement point are measured in real time; then a temperature theta[1](t) of a lumped heat source center inside the switch cabinet and a load ideal temperature theta[1](t)[LX] of the lumped heat source center and / or a determined load ideal temperature theta[2](t)[LX] of the indirect temperature measurement point are calculated; the measured temperature and the temperature obtained through calculating are compared with thresholds in a fault judgment standard to finally give a fault state diagnosis. The indirect temperature measurement method is employed in the invention to substitute for a complex and expensive direct temperature measurement mode. The operation is simple and the cost is reduced.
Owner:杨志强

Hydrogel eye protective pad dressing and preparation method thereof

The invention discloses a hydrogel eye protective pad dressing and a preparation method thereof. The hydrogel eye protective pad dressing is sequentially composed of an adhesion layer, a strengthening layer, a gel layer and an isolating layer. The shape of the adhesion layer is specially designed so that the adhesion layer is more consistent with an ergonomics principle. The hydrogel eye protective pad dressing contains the following components in percentage by mass: 2-15% of water-soluble high molecular polymer, 0.1-5% of pseudoplastic high molecular polymer, 0.1-10% of humectant and the balance of water, totaling 100%. The various components are integrated by virtue of a series of processes; the dressing is prepared by pouring a solution into a die, and implementing irradiation sterilization after curing the solution. Through detection on product performance, a result of a moisturizing effect test shows that the dressing disclosed by the invention is good in biocompatibility, and free from sensitization, irritation as well as toxic and side effect; moreover, the dressing is good in moisture retention and capable of keeping the humidity above 90% for at least 8 hours, and is suitable for popularization and application in a large area.
Owner:SAIKE SAISI BIOTECH CO LTD

Garlic combine harvester

The invention discloses a garlic combine harvester. The garlic combine harvester comprises a harvester body, a driving device, multiple seedling separators, a soil excavation mechanism, a clamping and conveying mechanism, a cutter mechanism and a collecting device, wherein the cutter mechanism is used for cutting off garlic seedlings; the collecting device is used for collecting and conveying garlic bulbs; the driving device is in driving connection with the harvester body; the clamping and conveying mechanism is movably suspended on the harvester body and has at least two clamping and conveying gaps, an inlet for inputting the garlic seedlings and an outlet for outputting the garlic seedlings are formed in two ends of each clamping and conveying gap, and the inlet is lower than the outlet; each seedling separator is fixed at one end, close to the corresponding inlet, of the clamping and conveying mechanism; the soil excavation mechanism is movably mounted on a rack and is located behind the seedling separators; the cutter mechanism is mounted on the clamping and conveying mechanism and located on the lower side of each clamping and conveying gap; the collecting device is fixed on the harvester body and located below the cutter mechanism. According to the garlic combine harvester, seedling separation, soil excavation, clamping, seedling cutting and garlic bulb conveying and collection of multiple rows of garlics can be completed once, and the adaptability and the reliability are high.
Owner:王成文

Solar thermal collector

The invention relates to a solar thermal collector, which comprises an upper substrate, a lower substrate, a heat absorbing layer, a frame bracket and a plurality of supports, wherein the upper substrate and the lower substrate are arranged oppositely; the frame bracket is arranged between the upper substrate and the lower substrate; the upper substrate, the lower substrate and the frame bracket form a cavity together; and the heat absorbing layer is arranged on the upper surface of the lower substrate positioned in the cavity. The plurality of the supports are arranged in the cavity at intervals, and are contacted with the upper substrate and the heat absorbing layer respectively. The heat absorbing layer has a carbon nano tuber structure.
Owner:TSINGHUA UNIV +1

Preparation method of catalyst for hydrogenation of phthalic acid dicarboxylic ester

The invention discloses a preparation method of a catalyst for hydrogenation of phthalic acid dicarboxylic ester. According to the catalyst, an aluminum oxide-monox mixture carrier is adopted; a transitional metal Ni aid is added in the forming stage of the carrier; and noble metal active components Ru or / and Pd are loaded by an equivalent-volume impregnation method. Due to addition of the aid Ni, the activity of the catalyst can be improved, the conversion rate of the phthalic acid dicarboxylic ester and the selectivity of the products can reach over 99 percent, and the using amount of the noble metal can be reduced to a certain degree. The preparation method is simple in preparation process and easy in industrial production.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Antichlor used for purifying reforming regeneration gas and preparation method of antichlor

The invention provides an antichlor used for purifying reforming regeneration gas. The antichlor is prepared from, by mass, 85-90wt% of a composite oxide carrier and 10-15wt% of alkaline earth metal oxide. The composite oxide carrier is a mixture formed by Al2O3, SiO2 and ZrO2 at the mass ratio of 80:(80-100):(1-3), the specific surface area of the composite oxide carrier is 310-340 m<2> / g, and the total acid content is 0.31-0.45 mmol / g. According to the antichlor, composite oxide with a specific composition is adopted as the carrier, the total acid content of the carrier can be easily controlled within a proper range so that the bonding force between metal active components and the carrier can be regulated and controlled to be moderate, accordingly, it is guaranteed that the antichlor has both high chlorine capacity and high anti-hardening capability, and thus the antichlor has broad industrialized application prospects.
Owner:SHENYANG SANJUKAITE CATALYST

Chitosan derivative based clean makeup-removing wet tissue with effects of bacterial inhibition and moisture preservation and preparation method of chitosan derivative based clean makeup-removing wet tissue

The invention discloses chitosan derivative based clean makeup-removing wet tissue with effects of bacterial inhibition and moisture preservation. The chitosan derivative based clean makeup-removing wet tissue with the effects of bacterial inhibition and moisture preservation is prepared from raw materials in percentage by weight as follows: 2%-5% of chitosan derivatives, 5%-10% of PEG-8 caprylic / capric glycerides, 3%-8% of butanediol, 2%-5% of glycerin, 1%-3% of trehalose, 1%-5% of olive oil PEG-6 esters, 0.5%-3% of a skin conditioner, 0.15%-0.3% of phenoxyethanol, 0.15%-0.3% of ethylhexylglycerin, 0.1%-0.2% of methylparaben, 0.05%-0.2% of sodium hyaluronate, 0.01%-0.05% of essence and the balance of deionized water. According to the chitosan derivative based clean makeup-removing wet tissue with the effects of bacterial inhibition and moisture preservation and a preparation method, the makeup-removing wet tissue prepared with the preparation method is low in production cost, high in stability and good in cleansing power and realizes deep cleaning, besides, the makeup-removing wet tissue further has the effects of bacterial inhibition and moisture preservation, the facial skin after application of the makeup-removing wet tissue is smooth and tender, and makeup residues on the facial skin are removed.
Owner:湖北立天生物工程有限公司

sybr Green I detection method of hla-b*1502 gene and its special primers and kits

The invention provides a SYBR Green I detection method for detecting HLA-B*1502 gene and its special primers and kit. The primers are designed according to the 2nd and 3rd exon regions of the HLA-B*1502 gene, and are used for qualitative detection of the HLA-B*1502 gene in the sample to be tested. The upstream primer of the primers has the nucleotide sequence of SEQ ID NO: 1 in the sequence listing, and the downstream primer has the nucleotide sequence of SEQ ID NO: 2 in the sequence listing. The invention can quickly and accurately detect the HLA-B*1502 gene, and is of great significance for ensuring human health and the drug safety of carbamazepine drugs. The detection method and the kit of the present invention can be used for nucleic acid detection of the HLA-B*1502 gene in various clinical samples (bone marrow, peripheral blood or tissue), and have broad application prospects.
Owner:BEIJING SEARCH BIOTECH

Pin shaping device of electronic device

InactiveCN103949564AEnsure consistencyGuaranteed Spacing RequirementsEngineeringMechanical engineering
The invention relates to a pin shaping device of an electronic device. The pin shaping device comprises a base, air cylinders, installing blocks, universal shafts, guiding blocks, forming blocks and a limiting block, wherein the installing blocks which are provided with the air cylinders are respectively and fixedly arranged at two ends of the base, the limiting block is fixedly arranged at the center of the base, the guiding blocks are fixedly arranged on the base and are positioned between the installing blocks and the limiting block, the corresponding ends of the universal shafts are fixedly arranged on piston rods of the air cylinders, the other ends of the universal shafts are connected to and arranged at the corresponding ends of the forming blocks in the guiding blocks, and convex plates which are arranged on the side surfaces of the forming blocks and grooves which are formed in the side surfaces of the limiting blocks are in clearance fit. According to the pin shaping device of the electronic device, disclosed by the invention, pins in redundant lengths can be synchronously cut off while the situation that the distance requirement of pin shaping of the electronic device is ensured is considered, the height consistency of the electronic device after shaping and the consistency of the distance between the pins after the shaping are ensured; the pins in redundant lengths are cut off while the shaping is carried out; the structure is simple, and the pin shaping device is suitable for being popularized and applied in a large area.
Owner:TIANJIN ZHONGHUAN SANFENG ELECTRONICS

Preparation method of perovskite film stable in air

The invention discloses a preparation method of a perovskite film stably existing in air. The method comprises two schemes as follows: Scheme I: an IV-group and VII-group compound solution is prepared; the solution is sprayed, titrated, spin-coated or printed onto a substrate surface, and a first thin solution layer is formed; the first thin solution layer is blown dry with a gas, and a first film is formed; a methyl ammonium halide solution is prepared and sprayed, titrated, spin-coated or printed onto the surface of the first film, and a second thin solution layer is formed through chemical reactions; the second thin solution layer is blown dry with a gas to form a film; the film is heated and dried or annealed, and the perovskite film is obtained; Scheme II: a mixed solution of two or more of IV-group and VII-group compounds and methyl ammonium halide is prepared; the mixed solution is sprayed, titrated, spin-coated or printed onto the substrate surface, and a thin solution layer is formed; the thin solution layer is blown dry with a gas to form a film; the film is heated and dried or annealed, and the perovskite film is obtained. According to the preparation method, steps are simple, technological parameters are convenient to control, and the method is suitable for large-area large-scale assembly line production.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI

Biological pesticide

The invention relates to the technical field of a pesticide and particularly relates to a biological pesticide. The biological pesticide disclosed by the invention is prepared from the following raw materials in parts by weight: 0.18-0.26 part of ginger, 0.1-0.18 part of carolina cranesbill herb, 0.15-0.3 part of sweet wormwood herb, 0.5-1 part of common cnidium fruit, 0.08-2 parts of common threewingnut root, 1-2 parts of sessile stemona root, 0.5-1 part of synergist, 0.5-1 part of azone, 0.8-1 part of virus preparation and the balance of water. Compared with the prior art, as the biological pesticide disclosed by the invention adopts biological products and Chinese herbal medicines as materials, the biological pesticide can kill insect pests, simultaneously has no toxicity or side effects against crops, further becomes an agricultural product which is safe to eat by people, and has no toxicity or side effects against health of people; and simultaneously, the quality of the agricultural product can be significantly improved, so that the biological pesticide is suitable for large-area popularization and application.
Owner:葛明彦

Solar thermal collector

The invention relates to a solar thermal collector, comprising an upper base plate, a lower base plate, a heat absorbing layer, a rim support frame and a plurality of supporters, wherein the upper base plate and the lower base plate are oppositely arranged, the rim support frame is arranged between the upper base plate and the lower base plate, a cavity is formed by the upper base plate, the lower base plate and the rim support frame, the heat absorbing layer is arranged on the upper surface of the lower base plate in the cavity, the supporters are arranged in the cavity at intervals and respectively contacted with the upper base plate and the heat absorbing layer, and the heat absorbing layer comprises a carbon nano-tube film comprising a plurality of carbon nano-tubes which are attracted and twisted with each other through Van der Waals force.
Owner:TSINGHUA UNIV

Method for producing high-concentration D-lactic acid by adopting synchronous enzymolysis and fermentation on peanut meal and special culture medium thereof

The invention discloses a method for producing high-concentration D-lactic acid by adopting synchronous enzymolysis and fermentation on peanut meal and a special culture medium thereof. The special culture medium adopts peanut meal as a fermenting culture medium of an organic nitrogen source. In addition, protease is added into the special culture medium. In the method for producing the high-concentration D-lactic acid, Sporolactobacillus inulinus CASD CGMCC (Computer Aided System Design China General Microbiological Culture Collection center) No.2185 is inoculated to the special culture medium for fermenting to obtain the high-concentration D-lactic acid. The method for producing the high-concentration D-lactic acid of the invention is obviously better than the traditional method for producing the high-concentration D-lactic acid, has the advantages of high purity, high production efficiency, low requirement on instrument and equipment, low cost, and the like and is suitable for large-area popularization and application.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Catalytic light mark and preparation method thereof, and method for determination of trace uranium by catalytic light mark

The invention discloses a catalytic light mark and a preparation method thereof, and a method for determination of trace uranium by the catalytic light mark. The catalytic light mark is composed of two parts of a DNA enzyme and a substrate DNA, a 3' end of a DNA enzyme sequence comprises four continuous guanine deoxynucleotides (G), the middle of a substrate DNA sequence has an adenine nucleotide (rA), and a 5' end of the substrate DNA is modified by a 4-methyl-6-carboxyl rhodamine (TAMRA) fluorescent dye. The DNA enzyme and the substrate DNA are in mixing hybridization to form the catalytic light mark, the catalytic light mark is added to a reaction system of a to-be-measured sample to undergo a reaction, the fluorescence intensity of uranyl nitrate ions with known concentration and the fluorescence intensity of the sample are determined, and the uranium content in the sample can be obtained through calculation. The method is a fast, accurate, high-sensitivity and high-selectivity method for determination of trace uranium.
Owner:EAST CHINA UNIV OF TECH

Modified hydrophilic polyurethane dressing and preparation method thereof

A modified hydrophilic polyurethane dressing and a preparation method thereof. The dressing comprises the following components: 20-40 parts of polyurethane, 25-40 parts of collagen, 5-10 parts of hyaluronic acid, 5-8 parts of chitosan, 1-4 parts of egg white, 20-30 parts of sodium alginate, 1-4 parts of Cordyceps extract, 8-13 parts of silver nano solution, 10-20 parts of carboxymethyl cellulose, 12-18 parts of bamboo fiber, acetyl fiber 12‑20 parts of plain sodium. Preparation method: Weigh each component by weight; melt polyurethane, collagen, hyaluronic acid, chitosan, egg white and sodium alginate in a reaction kettle, drop to 50-60°C, add other raw materials, and cool down Degassing to obtain the first mixture for later use; coating the first mixture on the colloid layer, drying naturally, and encapsulating to obtain a modified hydrophilic polyurethane dressing. Compared with the prior art, it has better moisturizing performance, no irritation to the skin, good antibacterial effect, and is suitable for large-scale popularization and application.
Owner:ANHUI JIANYUAN MEDICAL APP & INSTR EQUIP

Choline chloride water dispersible granule/tablet and preparation method thereof

The invention discloses a choline chloride water dispersible granule / tablet and a preparation method thereof. The choline chloride water dispersible granule / tablet comprises, by mass, 0.1-80% of choline chloride, 0.5-16% of a dispersant, 0.5-9% of a wetting agent, 0.5-25% of a disintegrating agent, 0-12% of a binder, and the balance filler. The preparation method of the granule / tablet comprises the following steps: mixing all the above raw materials composing the choline chloride water dispersible granule / tablet, carrying out ultramicro / airflow crushing, granulating, drying, granulating / tabletting, carefully choosing, and detecting. The choline chloride water dispersible granule / tablet has the advantages of safety to the environment, humans, animals and other beneficial organisms, difficult generation of the phytotoxicity, metering accuracy, use convenience, fast disintegration speed, good storage stability, and simple preparation technology, and is suitable for the industrialized production and the agricultural large-area popularization application.
Owner:安阳全丰生物科技有限公司

Method for detecting bio bar code for bluetongue virus

The invention discloses a biological bar code test method of bluetongue virus, taking VP7 protein of the bluetongue virus as a tested object. An MMP probe is coated with an anti-VP7 protein monoclonal antibody, and an NP probe is coated with an anti-VP7 protein polyclonal antibody. A bar code DNA chain carrying out the biological bar code test to the bluetongue virus is provided with an SEQ ID No: 1 nucleotide sequence in a sequence table, while a complementary probe NP chain is provided with an SEQ ID No: 2 nucleotide sequence in the sequence table. The invention has greater practical significance in the field of the diagnosis of the bluetongue and the inspection and quarantine of import and export, thus having wide application prospects.
Owner:FIELD OPERATION BLOOD TRANSFUSION INST OF PLA SCI ACAD OF MILITARY

Assembling multifunctional artificial algal reef

The invention discloses an assembling multifunctional artificial algal reef which comprises a parent reef (1) and a plurality of sub-reefs (5) arranged on the surface of the parent reef (1), wherein the parent reef (1) and the sub-reefs (5) are in reinforced concrete structures; the surfaces of the parent reef (1) and the sub-reefs (5) are in porous structures to facilitate adhesion of macroscopic algae; the parent reef (1) is connected with the sub-reefs (5) by stainless steel screws (6) with diameters of 10mm; no gap exists between the parent reef (1) and the sub-reefs (5); the parent reef (1) comprises two main body adhesion components (2), two drawing components (3) and two supporting components (4); the components are mutually supported to form a triangular structure. The assembling multifunctional artificial algal reef can be completely manually assembled and disassembled, has good wind wave resistance, can avoid silting of deposits on the surface of the algal reef, is available for adhesion of juvenile sporophytes of natural algae, and is also available for adhesion and wind wave sheltering of trepang, abalone, viscous roes and the like.
Owner:MARINE BIOLOGY INST OF SHANDONG PROVINCE
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