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The invention discloses a phenolic acid inhibitor and a use method and application thereof.The phenolic acid inhibitor comprises a component A. The component A comprises phenolic acid, polyethylene glycol and a phosphate buffer solution, and the phenolic acid is one or more of cumaric acid, kojic acid, chlorogenic acid, gallic acid and ferulic acid; the phenolic acid inhibitor is prepared from the following raw materials in parts by weight: 1 to 3 parts of phenolic acid, 0.1 to 0.3 part of polyethylene glycol and 8 to 12 parts of phosphate buffer solution, and the phenolic acid is two or three of coumaric acid, chlorogenic acid and ferulic acid. The PPO inhibition activity of the phenolic acid inhibitor can reach 70%-80%, the quality of fruits is well maintained, and browning caused by fruit processing is delayed.

The invention discloses a preparation method of a CeO2-GO hybrid material / epoxy resin composite anticorrosive coating, and the method comprises the following steps: carrying out covalent chemical modification on the surface of GO by using 3-aminopropyltriethoxysilane ((3-aminopropyltriethoxysilane, APTS) to obtain amino functionalized GO; the preparation method comprises the following steps: under the catalysis of acetic acid, carrying out surface modification on cerium dioxide nano particles by using 3-glycidyl ether oxypropyl trimethoxy silane (3-Glycidyloxyphenyltrimethoxysilane, GPTS), so as to obtain the epoxy group functionalized CeO2. And anchoring CeO2 nanoparticles on the surface of GO through a ring-opening reaction between the amino group and the epoxy group to obtain the CeO2-GO hybrid material. The prepared CeO2-GO hybrid material is added into an epoxy resin matrix, and the corrosion resistance of an obtained epoxy resin coating is remarkably improved.

The present invention discloses a control rod absorber core block and a control rod. The control rod absorber core block includes a zirconium hydride column having at least two sub-cavities inside and at least two boron carbide blocks; the boron carbide blocks are respectively filled in the sub-cavities of the zirconium hydride column; in the zirconium hydride column, the height of the boron carbide blocks extends along the height direction of the zirconium hydride column. The control rod absorber core block of the present invention is mainly formed by a zirconium hydride column and the boron carbide blocks filled therein, and has the advantages of high reactivity value and low radiation swelling rate, etc. It can replace absorber core blocks made of existing absorber materials such as simple B4C in fast reactors, and also has the potential for application in thermal reactors, thereby increasing the service life of control rods and thus increasing the mechanical life of control rod assemblies.

The application belongs to the technical field of new energy materials, and particularly relates to a defect-rich rock-salt high-entropy oxide battery material and a preparation method and application thereof. The chemical formula of the material is (LiCoCuMgZnM)O, wherein M is at least one of Mn and Fe. In order to improve the electrochemical performance of the material, the amount of fuel glycine is precisely controlled through element regulation, and a new rock-salt high-entropy oxide battery material rich in oxygen vacancies and moderate lattice distortion is quickly prepared under an oxygen-poor condition. Finally, the excellent electrochemical energy storage performance of the electrode material under high rate is realized. The defect-rich new rock-salt high-entropy oxide battery material provided by the application is used as a lithium ion battery negative electrode material, and remarkable improvement is achieved in the rate performance. The preparation method of the material has a simple process and mild reaction conditions, and has wide applicability, and can be used to regulate the defects of high-entropy oxides with other crystal structures and chemical compositions.

The invention discloses a silver-based intelligent fabric with efficient antibacterial, self-cleaning and advanced electromagnetic shielding functions and a preparation method thereof. The preparation method comprises the following steps: firstly, combining polyester, nylon and aramid fiber by using a blending process to obtain a blended fabric, then pretreating the fabric by using an alkaline substance and triethanolamine acetate quaternary ammonium salt, then reducing silver ions by using sodium citrate to obtain nano-silver particles, and finally combining the blended fabric with the nano-silver particles to obtain the silver-based intelligent fabric. Polyester, nylon and aramid fiber are used as raw materials of the blended fabric, the advantages of high strength, softness, good environment resistance, low cost and the like of the polyester, the nylon and the aramid fiber are combined, the excellent antibacterial property and electromagnetic shielding performance of silver are combined, and nano-silver particles are loaded on the surface of the fabric by adopting an impregnation method; the multifunctional fabric integrating efficient antibiosis, self-cleaning and electromagnetic shielding is obtained, the shielding performance of the multifunctional fabric can reach-60 dB or above, and the self-cleaning performance and the antibiosis performance can reach 96% or above.

The invention discloses a bangia fusco-purpurea polysaccharide degrading enzyme gene, a degrading enzyme as well as a preparation method and application of the degrading enzyme, and belongs to the technical field of gene engineering and enzyme engineering. The invention provides a bangia fusco-purpurea polysaccharide degrading enzyme Gal43B gene, the nucleotide sequence of the bangia fusco-purpurea polysaccharide degrading enzyme Gal43B gene is as shown in SEQ ID NO.1, the bangia fusco-purpurea polysaccharide degrading enzyme Gal43B gene is a key enzyme gene gal43b of a novel bangia fusco-purpurea polysaccharide glycosidic bond obtained by cloning from Priesteria megaterium JMU13, the size is 849bp, and 282 amino acids are encoded. The invention provides a bangia fusco-purpurea polysaccharide degrading enzyme Gal43B, and the amino acid sequence of the bangia fusco-purpurea polysaccharide degrading enzyme Gal43B is shown as SEQ ID NO.2. The bangia fusco-purpurea polysaccharide degrading enzyme Gal43B has relatively high enzymatic activity, shows good stability in relatively wide temperature and pH ranges, and has a good application prospect and industrial value.

The invention belongs to the field of biological materials, and particularly relates to a metal protein coating and a preparation method thereof. The preparation method comprises the following steps: mixing a soluble metal salt solution, a soluble protein solution and a buffer solution to obtain a mixed solution; and immersing the pretreated base material in the mixed solution, and carrying out ultraviolet radiation and reaction. According to the preparation method, an ultraviolet radiation induction method is adopted, ultraviolet is utilized to induce metal and protein to form the coating in a self-assembly mode, the method has the advantages of being efficient, high in controllability, simple and easy to operate and the like, expensive equipment and a complex process are not needed in the preparation process, and the production cost is reduced; in addition, the metal protein coating simultaneously has good biocompatibility and secondary functionalization of protein and antibacterial performance of metal ions, so that the coating has good antibacterial performance and biocompatibility, and can be covalently or non-covalently combined with other molecules or materials to realize other specific functions; and the requirements of different applications are met.

This invention provides an oxygen- and water-barrier highly transparent composite film and its preparation method, relating to the field of packaging materials. The oxygen- and water-barrier highly transparent composite film provided by this invention improves the oxygen- and water-barrier properties and light transmittance of carboxymethyl cellulose (CMC) film by filling and crosslinking it with hydrotalcite nanosheets and dialdehyde cellulose. The high aspect ratio of the hydrotalcite nanosheets forms a brick-wall structure within the CMC nanosheets, extending the diffusion path of small gas molecules and thus enhancing the barrier properties of the base film. Dialdehyde cellulose acts both as a crosslinking agent and as a void filler in the "brick-wall structure," further improving the barrier properties of the base film and also contributing to the stability of the CMC film in water. The addition of a low proportion of hydrotalcite nanosheets improves the light transmittance of the base film.

This invention belongs to the field of pharmaceutical technology. Addressing the lack of reported applications of Astragalus injection in the preparation of drugs for treating cerebral hemorrhage, this invention proposes the use of Astragalus injection in the preparation of drugs for treating cerebral hemorrhage. Experimental results show that Astragalus injection can protect brain tissue neurons by inhibiting the HMGB1 / RAGE signaling pathway, inhibiting neuronal apoptosis, and reducing the expression of inflammatory factors in brain tissue, thereby achieving a protective effect against cerebral hemorrhage in rats. Therefore, Astragalus injection has the potential to be used as a drug for treating cerebral hemorrhage.

The application discloses a fluorine-containing anion adsorption site modified non-interface polyimide-based acetylene separation membrane and a preparation method and application thereof, and comprises a polymer continuous phase and a fluorine-containing anion salt uniformly dispersed in the polymer continuous phase; wherein the polymer continuous phase is a polyimide matrix containing 6FDA structural units, the fluorine-containing anion in the fluorine-containing anion salt is tetrafluoroborate and / or hexafluorophosphate, and the fluorine-containing anion in the fluorine-containing anion salt cooperates with a fluorine-containing structure in the polyimide matrix to construct an acetylene adsorption microenvironment in the polymer continuous phase as an acetylene adsorption site. Unlike a traditional mixed matrix membrane, the application does not depend on porous fillers such as metal organic frameworks, molecular sieves or covalent organic frameworks, and can effectively solve the non-selectivity defects caused by particle agglomeration and interface voids of the mixed matrix membrane. Moreover, the preparation method is simple, raw materials are easy to obtain, and the application can be used for efficient separation of acetylene-containing mixed gas.