7 results about "Ultraviolet radiation" patented technology

The invention discloses a preparation method and application of biocontrol bacterium hydrogel for preventing and controlling black spot of jujube fruits, and the preparation method comprises the following steps: S1, dissolving Pluronic F-127 in double distilled water, stirring to prepare a Pluronic F-127 solution, and standing at 0-20 DEG C for 2-14 hours to form a Pluronic F-127 hydrogel solution; s2, the Pluronic F-127 hydrogel solution, a biocontrol bacterium culture medium and the biocontrol bacterium suspension are mixed, and biocontrol bacterium hydrogel is prepared; the biocontrol bacterium hydrogel can rapidly form a gel state at 37 DEG C. The Pluronic F-127 temperature-sensitive hydrogel has a three-dimensional network structure, can create a buffer microenvironment for the biocontrol bacteria encapsulated in the hydrogel, effectively resists drought, high temperature, ultraviolet radiation and other field adversity stress, significantly improves the survival rate and environmental stress resistance of the biocontrol bacteria, also can realize slow release of the biocontrol bacteria, greatly prolongs the action time of the biocontrol bacteria, and has good application prospects. More sufficient time for colonization and reproduction of biocontrol bacteria on the surfaces of plants is guaranteed, pathogenic bacteria are continuously inhibited, and finally the stable and lasting prevention and control effect on the jujube fruit black spot is achieved.

The invention provides a modifier for a silicone structural adhesive as well as a preparation method and application of the modifier, and belongs to the technical field of silicone adhesives. The modifier disclosed by the invention is obtained by carrying out hydrolytic condensation reaction on preparation raw materials comprising the following components: (A) 35-45 parts by weight of methyltrialkoxysilane; (B) 5 to 15 parts by weight of epoxy propyl trialkoxysilane; (C) 5 to 15 parts by weight of a dimethyl dialkoxysilane; and (D) 5 to 15 parts by weight of bis (methyldialkoxysilylethyl) benzene; the alkoxy groups are respectively and independently selected from at least one of methoxy groups, ethyoxyl groups and propoxy groups. The modifier provided by the invention not only can improve the interface bonding performance of the silicone structural adhesive, but also can greatly improve the water ultraviolet radiation resistance of the silicone structural adhesive.

The application discloses a preparation method of functional waste edible mushroom residue-based vegan leather, and the vegan leather comprises, from outside to inside, a surface layer, a foaming layer, a bonding layer and a base layer; the mushroom residue is subjected to demethylation and boron crosslinking modification, phenolic hydroxyl groups converted from methoxyl groups are reacted with isocyanate in bio-based waterborne polyurethane to form phenolic carbamic acid ester bonds, and the interface interaction between the mushroom residue and resin is improved; crosslinking of boron compounds and phenolic hydroxyl groups inhibits the agglomeration of mushroom residue particles, and the flame retardant property of the vegan leather is improved; meanwhile, borate anions are complexed with phenolic hydroxyl groups converted from methoxyl groups, and the two have a synergistic effect, which jointly influences the compatibility between the mushroom residue and resin, the breaking strength of the vegan leather, the flame retardant property and the ultraviolet radiation resistance; the modified mushroom residue is prepared into vegan leather by using bio-based polymers, the preparation process is energy-saving and consumption-reducing, the finished product is green, environment-friendly and degradable, and the use of petroleum-based synthetic leather is replaced.

The invention relates to a laver lysing extract as well as a preparation method and application thereof, and belongs to the technical field of biology. According to the method, a strain is obtained from a separating medium in the porphyra yezoensis drying processing process, it is tested that the strain can secrete lysozyme capable of rapidly dissolving porphyra cell walls, the lysozyme comprises amylase and protease, and intracellular phycobiliprotein, low-molecular sulfuric acid galactan and the like can be released after cell dissolution; the purpose that laver cells are lysed and intracellular components are efficiently released is achieved, and the strain is identified as bacillus tequilensis T7. The laver lysate extract prepared by the invention has the effects of resisting oxidation, preventing ultraviolet radiation and the like, and can be applied to the fields of cosmetics, functional foods, beverages and the like.

The present invention relates to a composition comprising TES trioleate and oleamide serinol as active ingredients for alleviating and preventing cellular senescence. According to the present invention, the composition comprising TES trioleate and oleamide serinol exhibits cytoprotective effects on skin cells damaged by UV and inhibitory effects on generation of reactive oxygen species. According to the present invention, the composition comprising TES trioleate and oleamide serinol exhibits the effects of protecting skin cells damaged by UV, suppressing generation of senescence-associated marker proteins (SA-β-gal), and inhibiting formation of a senescence-associated secretory phenotype (SASP).

The application belongs to the technical field of vegetable substrates, and particularly relates to a facility vegetable substrate in a plateau area and a preparation method thereof; the final mixture is obtained by mixing fermented sheep manure and nutrient soil, adding a mixture of vermiculite and a sodium carboxymethyl cellulose aqueous solution to obtain the vegetable substrate; the preparation method of the nutrient soil comprises the following steps: mixing urea, boric acid, EDTA chelated iron, EDTA chelated zinc, EDTA chelated copper and ammonium molybdate, heating to 38-42 DEG C, spraying a kH550 silane coupling agent solution, stirring at 58-63 DEG C for 1.8-2.2 h, adding to deionized water, heating to 40-43 DEG C, adding hydroxypropyl cellulose, polyvinylpyrrolidone, Tween 80 and sorbitol, spray drying, mixing with biochar and alfalfa powder to obtain the nutrient soil; the vegetable substrate prepared by the application has excellent water absorption and water retention performance, good ultraviolet radiation resistance, effectively promotes the growth and development of vegetables, and improves the yield and quality of vegetables.

The utility model belongs to the technical field of wire harness impact-resistant protective shells, and particularly relates to an automobile engine wire harness impact-resistant guide protective shell which comprises a first shell. A second shell is arranged at the top of the first shell; a rotating rod is rotationally connected between the first shell and the second shell; a convex block is fixedly connected to the side wall of the first shell; the convex blocks are symmetrically arranged on the side wall of the first shell; the side wall of the second shell is fixedly connected with a buckling block; the buckling blocks are symmetrically arranged on the side wall of the second shell; the convex block and the buckling block are arranged in a buckling manner; a buffer spring is fixedly connected to the inner side wall of the first shell. The buffer springs are arranged in the first shell in a linear array mode. Through the above structure, the risk that the wire harness is damaged due to impact can be effectively reduced, and the rubber also has excellent aging resistance and weather resistance, and does not have hardening and cracking phenomena in severe environments such as long-term high temperature, high humidity, ultraviolet irradiation and the like.