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813results about How to "Increase content" patented technology

Multi-task personalized web service method based on hypergraph

InactiveCN101986299AHigh precisionIncrease contentSpecial data processing applicationsInclusion relationHypergraph
The invention provides a multi-task personalized web service method based on a hypergraph, comprising the following steps: relations among objects in a social network community are acquired, the relations among the objects are constructed to form a hypergraph, each object is constructed to be a node in the hypergraph, each relation among the objects is constructed to be a hyperedge in the hypergraph, the objects of the same type form nodes of the same type, the relations among the objects of the same type form the hyperedges of the same type in the hypergraph, and each hyperedge is weighted; a matrix H for characterizing an inclusion relation between the hyperedges and the nodes and a weight diagonal matrix W are acquired; the matrix H and the weight diagonal matrix W are subject to precomputation, query objects are selected in accordance with personalized service demands, and query vectors are constructed in accordance with the query objects; the other objects on the hypergraph are sequenced in accordance with correlation between the others objects and the inquiry objects; and screening is carried out on sequencing results in accordance with the personalized service demands, and the result is pushed to the user. The multi-task personalized web service method based on the hypergraph has the advantages that various types of information in the network community can be taken into account simultaneously, multidimensional relation can be processed, and non-loss of multidimensional information can be ensured.
Owner:ZHEJIANG UNIV

Camellia extraction liquid, and preparation method and application thereof

The invention provides a preparation method of camellia extraction liquid. The method comprises the following steps of 1) removing impurities of fresh camellia and/or fresh camellia buds; cutting up the fresh camellia and/or fresh camellia buds into small sections for use as raw materials; 2) taking a certain number of raw materials; putting the raw materials into an ultrasonic kettle; adding a solvent with the mass ratio being 1:(3-30); uniformly stirring the mixture; adding a certain amount of inorganic acid and/or organic acid; regulating the pH value to 1.3 to 3.0; soaking the materials for 10 to 30 min; 3) then performing ultrasonic treatment for 30 to 60min; controlling the ultrasonic frequency to be 20 to 25KHz, the ultrasonic power to be 1.0 to 2.0KW and the ultrasonic temperature to be 15 to 50 DEG C; then performing filtration, sterilization and detection to obtain camellia extraction liquid. The camellia extraction liquid maintains the color, luster, flavor and effective active ingredients of the camellia to the maximum degree; the anti-oxidation functional ingredients are overall; the contents are high; the safety and the stability are high; cosmetics prepared by using camellia extraction liquid as active ingredients have the excellent whitening, spot-reducing and anti-aging efficacies.
Owner:SHANGHAI DELTA IND

Polyvinylpyrrolidone modified graphene coated sulfur/porous carbon composite anode material and preparation method thereof

ActiveCN104078685AIncrease contentImprove the utilization rate of active substancesCell electrodesLi-accumulatorsCvd grapheneHigh rate
The invention relates to a polyvinylpyrrolidone modified graphene coated sulfur/porous carbon composite anode material and a preparation method thereof, which relates to a sulfur/carbon composite material applied to a lithium-sulfur secondary battery anode material and a preparation method of the composite material, and solves the technical problem of the existing lithium-sulfur battery anode material graphene-coated sulfur-containing composite material that the electrochemical property is low. The polyvinylpyrrolidone modified graphene coated sulfur/porous carbon composite material is characterized in that the outer surface of a sulfur/porous carbon composite material particle is uniformly coated with a polyvinylpyrrolidone modified graphene slab layer, a graphene conductive network is formed between every two adjacent particles, and a grading core-shell structure is formed. The preparation method comprises the steps of adding the sulfur/porous carbon composite material into graphene slurry modified by the polyvinylpyrrolidone, and mixing the sulfur/porous carbon composite material with the graphene slurry, and coating the sulfur/porous carbon composite material with the graphene slurry modified by the polyvinylpyrrolidone. The anode material is high in specific capacity, long in cycle life and good in high-rate performance.
Owner:HARBIN INST OF TECH

Silicon-base cathode material for lithium ion battery and preparation method of silicon-base cathode material

The invention relates to a silicon-base cathode material for a lithium ion battery and a preparation method of the silicon-base cathode material. The preparation method of the silicon-base cathode material comprises the steps that 1) nano silicon powder and hydrochloric acid are mixed, stirred at a room temperature, and then subjected to suction filtration to obtain surface-treated nano silicon powder; 2) a Tris solution is prepared; a dopamine monomer is added to the obtained Tris solution under a nitrogen supply condition; and sufficient stirring is performed to obtain a dopamine solution; and 3) the surface-treated nano silicon powder and the dopamine solution are mixed and sufficiently stirred under a vacuum condition; and then a polymerization reaction is performed in atmosphere to obtain the silicon-base cathode material. According to the method, the nano silicon powder is treated with concentrated hydrochloric acid, a silica oxidation layer is introduced on the surface of the nano silicon powder, and the mechanical strength of the oxidation layer is high, so that a buffer effect is exerted on expansion of the silicon powder. In addition, the silicon powder coating more complete polydopamine is obtained after hydrochloric acid treatment, and CMC (carboxy methylated cellulose) serving as a binding agent and the silicon-base cathode material are used cooperatively, so that the obtained lithium ion battery has better cycle efficiency and initial efficiency.
Owner:WUHAN UNIV OF TECH

Preparation method for black tea

The invention relates to a preparation method for black tea. The preparation method comprises the following steps of 1) picking spring tea leaves; 2) spreading the picked tea leaves, wherein the spreading thickness is 2-3 cm, and the spread time is 6-12 hours; 3) withering the tea leaves, wherein the thickness is 2-3 cm, a temperature is 22-28 DEG C, turning the tea leaves every 15 minutes, and the withering time is 4-6 hours; 4) rolling the witheblack tea leaves with hands; 5) fermenting the tea leaves in dark at the temperature of 40-45 DEG C, the fermentation time is 6-8 hours, turning the tea leaves after the tea leaves are fermented one hour in the dark, then turning the tea leaves every 0.5 hour for 3-6 times; adding spread fresh tea leaves with an amount of 10-20% of the weight of the fermented tea until seventy percentages of the sprout leaves turn to black copper color from green; and 6) drying the black copper color tea leaves for two times. For the improvement of a fermentation process, the added unfermented spread fresh leaves contain relatively many theaflavin synthetic substrates such as catechins and the like; parameters are adjusted in cooperation with spreading, fermenting and drying, so that pure quality of Keemun black tea is retained; and the content of the theaflavin is increased.
Owner:湖南黄金红茶业有限公司

High-nutrient healthcare rice and preparation method thereof

The invention discloses a kind of high-nutrient healthcare rice, which is characterized in that the high-nutrient healthcare rice is composed of following materials in percentages by dry weight: 0.5-2% of millet, 3-7% of purple wheat, 3-6% of hulless oat, 0.3-1% of coix seed, 1-2% of lentinus edodes, 0.6-1.5% of hericium erinaceus, 1.5-5% of radix puerariae, 2-4% of Chinese yam, 0.3-1% of red ginseng, 0.3-1% of sealwort, 1-3% of corn, 1-4% of soybean, 1.5-5% of black soybean and the balance being brown rice. The preparation method comprises the steps of: A, respectively superfine-grinding the millet, the purple wheat, the hulless oat, the coix seed, the lentinus edodes, the hericium erinaceus, the radix puerariae, the Chinese yam, the red ginseng, the sealwort, the corn, the soybean and the black soybean into superfine crushed materials with a grain size less than 800 meshes; B, crushing the brown rice into a crushed material with a grain size less than 80 meshes; C, weighing the superfine crushed material and the brown rice crushed material according to proportion, and uniformly mixing the superfine crushed material and the crushed material to be a mixture; D, adding water into the mixture to stir into a paste; E, shaping the paste into rice grains by extrusion; and F, drying the rice grains by microwave, thus obtaining finished goods of the high-nutrient healthcare rice.
Owner:寇开勤

Preparation method for efficiently extracting separating high-purity flavone components from ginkgo leaf

InactiveCN103110670AIncrease contentThe ingredients and content are clearNervous disorderGinkgophyta medical ingredientsChemistryKaempferol-3-O-rutinoside
The invention provides a preparation method for efficiently extracting separating high-purity flavone components from ginkgo leaf. The main components are kaempferol-3-O-2'', 6''-dirhamnosylglucoside, rutin, quercetin glucosyl rhamnoside, kaempferol-3-O-rutinoside, isorhamnetin-3-O-rutinoside, quercetin p-coumaroyl glucose rhamnoside and kaempferol p-oumaroyl glucose rhamnoside. The preparation method comprises the following steps: pulverizing the medicinal material ginkgo leaf, adding an alcohol water solution to carry out extraction, concentrating, carrying out nonpolar macroporous adsorbent resin column chromatography on the filtrate, carrying out two-dimensional separation with a novel silica gel substrate bonded material, eluting with a methanol solution, collecting the eluate, concentrating, and drying to obtain the gingko flavone components. The invention enhances the target component content, and obtains the flavone components with definite content. The extraction and separation process has the advantages of high repetitiveness and favorable operability, and is suitable for large-scale preparation of flavone components by separation from ginkgo leaf. The flavone components can be used as a raw material for Shuxuening injections.
Owner:北京华润高科天然药物有限公司

Bacillus amyloliquefaciens WS-8 and application thereof

ActiveCN105483054AImprove leaf colorIncrease contentBiocidePlant growth regulatorsFermentation brothVegetable farming
The invention relates to a bacillus amyloliquefaciens subspecies WS-8 and application thereof and discloses a bacillus amyloliquefaciens subspecies. The bacillus amyloliquefaciens WS-8 subspecies is preserved in the Common Microorganism Center of the China Committee for Culture Collection of Microorganisms, the serial number is CGMCC No.11787, and the preservation date is December 4th, 2015. The invention further discloses the application of the bacillus amyloliquefaciens subspecies in preventing and treating crop blade surface airborne fungal diseases and soil-borne fungal diseases. Fermentation broth is diluted by 50 folds and is sprayed once every 7-15 days, the prevention effect on tomato leaf mold can reach 72%, and good preventing and treating effects on other airborne and soil-borne fungal diseases are also achieved; meanwhile, the strain can improve the quality of crops, effectively improve the leaf color of plants, increase the content of chlorophyll, improve the disease resistance of the plants, reduce pesticide residues and improve quality. The strain is capable of being conveniently cultured manually and high in breeding speed, facilitates mass production and has the potential to be developed into biopesticide applied in the planting process and posthavesting of vegetables for disease prevention and treatment.
Owner:BIOLOGY INST OF HEBEI ACAD OF SCI
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