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395results about How to "Fast repair" patented technology

Preparation method for conduction and sustained release type nervous tissue engineering scaffold

The invention relates to a preparation method for a conduction and sustained release type nervous tissue engineering scaffold. The method comprises the following steps: silk fibroin Silk and lactic acid-caprolactone copolymer are dissolved in a solvent, dissolved and stirred to obtain a solution, then polyaniline and camphorsulfonic acid are added and stirred and mixed uniformly to obtain a cortex electrospinning solution, and NGF (nerve growth factors) are dissolved in ultrapure water completely to obtain a core electrospinning solution; and the cortex electrospinning solution and the core electrospinning solution are accommodated in an injector respectively for coaxial electrospinning, and then fumigation treatment and vacuum drying are performed to obtain the conduction type nervous tissue engineering scaffold. According to the prepared nanofiber scaffold, the nerve repair speed is increased from ways including external electrical stimulation (conductive polymer), biochemistry (NGFs), a topological structure required by nerve regeneration (orientation guide) and the like. The method is simple to operate, good in repeatability and high in economic benefit, and provides novel experimental thought for nerve defect repair in clinical application.
Owner:诺一迈尔(山东)医学科技有限公司

Disulfide bond and hydrogen bond-containing double self-repairing polyurethane coating for invisible car clothing and preparation method thereof

The invention relates to a disulfide bond and hydrogen bond-containing double self-repairing polyurethane coating for invisible car clothing and a preparation method thereof. The raw materials of theself-repairing polyurethane coating comprise an oligomer diol, a diisocyanate, a disulfide bond-containing chain extender A, and a multiple hydrogen bond-containing chain extender B. A method for preparing the multiple hydrogen bond-containing chain extender B is further provided, and the method comprises the following steps: first, 2-amino-6-methyl-4-[3H]pyrimidone (UPy) is reacted with an diisocyanate to form an intermediate with a single-terminal isocyanate group, then the intermediate is reacted with a mono-amino diol, and the multiple hydrogen bond-containing chain extender B is formed byusing the activity difference of reactive groups. The disulfide bond and hydrogen bond-containing double self-repairing polyurethane coating is further prepared by random copolymerization of the rawmaterials. A self-repairing process of the disulfide bond and hydrogen bond-containing double self-repairing polyurethane coating does not require stimulation by conditions such as temperature, light,pH and redox, a repairing speed is fast, and the repairing can be completed within 3 min at room temperature.
Owner:SHANDONG UNIV

Method for recovering cadmium polluted soil by combining compound microorganism bacterium agent with houttuynia cordata

InactiveCN103071672AImprove the effect of bioremediationImprove repair effectContaminated soil reclamationHouttuyniaCombined method
The invention discloses a method for recovering cadmium polluted soil by combining a compound microorganism bacterium agent with houttuynia cordata. The compound microorganism bacterium agent comprises the following components by count: 1*10<9>-9*10<9>CFU (colony forming unit)/m<3> pseudomonas fluorescens, 1*10<8>-6*10<8>CFU/m<3> actinomyces ruminicola, and 1*10<9>-9*10<9>CFU/m<3> glomus mosseae. The method for recovering the soil comprises the following steps that the houttuynia cordata is planted in cadmium soil and the compound microorganism bacterium agent is inoculated into the soil, or the houttuynia cordata is soaked in the compound microorganism bacterium agent and then planted into the cadmium soil; when branches and leaves of the houttuynia cordata are luxuriant, the branches and the leaves of the houttuynia cordata are harvested; and cadmium in the soil can be removed. The compound microorganism bacterium agent can better improve the tolerance of the houttuynia cordata, promote growth of a plant in the high-cadmium-content soil, improve the absorbility of the plant to cadmium, and enhance a soil heavy metal removal effect. The method for recovering the soil is a safe, environment-friendly, high-efficiency, economical and practical plant-microorganism combined method for recovering the heavy metal polluted soil, and has a significant application value.
Owner:SICHUAN UNIV

Method for restoring Thangka image by combining shapes and neighborhood classification of damaged piece

The invention discloses a method for restoring a Thangka image by combining the shapes and neighborhood classification of damaged pieces. A proper algorithm is automatically selected to restore a damaged Thangka image according to the shapes and neighborhood information of the damaged pieces, the characteristics of the conventional restoration algorithms and the like. The method mainly comprises the following steps of: segmenting the image to be restored by using a watershed segmentation method, and classifying the damaged pieces in a damaged area into linear damaged pieces and blocky damagedpieces to realize the shape classification of the damaged pieces; extracting the second-order statistical information of neighborhood pieces by adopting a gray level co-occurrence matrix, extracting various characteristics of reaction textures by using the gray level co-occurrence matrix, performing Gaussian normalization on the characteristics, and classifying the neighborhood pieces into texture blocks and non-texture blocks by adopting a conventional K-nearest neighbor method to realize the neighborhood classification of the damaged pieces; and formulating selection rules for the algorithms by combining the characteristics of the restoration algorithms, the shapes of the damaged pieces and the neighborhood classes of the damaged pieces, and automatically restoring the damaged area. Themethod is applied to the restoration of various linear and blocky damaged pieces and various damaged neighborhoods of Thangka digital images, and has high restoration speed and efficiency.
Owner:NORTHWEST UNIVERSITY FOR NATIONALITIES

Bioremediation method for heavy-metal contaminated soil of mining area

The invention discloses a bioremediation method for the heavy-metal contaminated soil of a mining area, comprising the following steps: (1) applying thoroughly decomposed farmyard manure and superphosphate to the surface of the heavy-metal contaminated soil of the mining area, and spraying a biological surfactant which is rhamnolipid with the mass concentration of 1.5%; (2) ploughing, leveling and irrigating the heavy-metal contaminated soil of the mining area; (3) coating the alfalfa seeds with a microbial inoculum containing alfalfa-rhizobia; (4) coating the alfalfa seeds coated with the microbial inoculum; (5) treating Chinese wildrye seeds at low temperature; (6) mixing the coated alfalfa seeds and the Chinese wildrye seeds treated at low temperature, and sowing the mixed seeds into the heavy-metal contaminated soil of the mining area; and (7) carrying out field management after the seedlings emerge. Due to the adoption of the bioremediation method, the heavy metal in the heavy-metal contaminated soil of the mining area can be adsorbed and absorbed efficiently, and the residual heavy metals in the soil can be reduced. The bioremediation method has the characteristics of high remediation speed, good effect and large treating amount and is easy to operate and master manually.
Owner:DALIAN NATIONALITIES UNIVERSITY

Method for preparing conductive composite nanofiber nervous tissue engineering scaffold based on graphene

The invention provides a method for preparing a conductive composite nanofiber nervous tissue engineering scaffold based on graphene. The method includes the following steps: a step 1, dissolving tussur silk fibroin and poly (lactic acid)-poly caprolactone in a solvent with stirring till complete dissolution of the tussur silk fibroin and the poly (lactic acid)-poly caprolactone so as to acquiring a spinning solution; a step 2, performing electrostatic spinning on the spinning solution obtained from the step 1 so as to acquire a nanofiber membrane, performing steam fumigation treatment by using ethyl alcohol, and performing drying so as to acquire tussur silk fibroin/ poly (lactic acid)-poly caprolactone composite nanofibers; and a step 3, dipping the tussur silk fibroin/ poly (lactic acid)-poly caprolactone composite nanofiber scaffold material obtained from the step 2 in a graphene oxide dispersion liquid, taking out the tussur silk fibroin/ poly (lactic acid)-poly caprolactone composite nanofiber scaffold material, cleaning the tussur silk fibroin/ poly (lactic acid)-poly caprolactone composite nanofiber scaffold material, soaking the tussur silk fibroin/ poly (lactic acid)-poly caprolactone composite nanofiber scaffold material in an ascorbic acid solution, taking out the tussur silk fibroin/ poly (lactic acid)-poly caprolactone composite nanofiber scaffold material, and cleaning the tussur silk fibroin/ poly (lactic acid)-poly caprolactone composite nanofiber scaffold material so as to acquiring the conductive composite nanofiber nervous tissue engineering scaffold based on the graphene. The method is simple to operate, is excellent in repeatability, and can provide a new thought for nerve defect repairing.
Owner:DONGHUA UNIV
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