201results about How to "Appropriate area" patented technology

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.

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.

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).

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.