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41results about How to "Wide range of practical applications" patented technology
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Method for extracting blueberry anthocyanin
The invention discloses a method for extracting blueberry anthocyanin, and belongs to the field of natural organic chemistry. Blueberry fruits are adopted as raw materials, crushed and pulped, an ethanol solution with the mass fraction being 40% is adopted as an extraction solution, cellulase is added, and extraction is carried out under ultrasonic assistance; centrifugal separation is carried out, precipitation and repeated digestion are carried out once, extraction solutions are combined and concentrated, then the blueberry anthocyanin is promoted to be dissolved out through a high-voltage pulse electric field, and the dissolving-out amount of the blueberry anthocyanin of the extraction solutions is increased; then macroreticular resin adsorption, alcohol washing, concentration and freeze drying are carried out, and therefore the method for extracting the blueberry anthocyanin is obtained. A living example proves that operation is controllable, the method is unique, the production cost is reduced, pollution is avoided, the extraction rate of the prepared blueberry anthocyanin is as high as 80% or above, the purity reaches 75% or above, and higher medical care value and a wider practical application field are achieved.
Owner:仇颖莹
Method for preparing orientated-state polylactic acid profile
ActiveCN106426973AWide range of practical applicationsArranged orderlyCoatingsPolymer scienceBiocompatibility Testing
The invention discloses a method for preparing an orientated-state polylactic acid profile. The method comprises the following steps of 1, conducting injection molding on dried polylactic acid raw materials through an injection molding machine, so that a billet material is obtained, or heating and pressurizing the polylactic acid raw materials, so that the polylactic acid raw materials are made into the billet material through forging; 2, conducting oriented intensification on the billet material obtained in step 1, wherein extrusion or forging is adopted as the oriented intensification method; and 3, conducting cooling and quenching on the billet material obtained in step 2, so that after the billet material is stabilized, the profile is formed. According to the method for preparing the orientated-state polylactic acid profile, technological parameters for preparing the polylactic acid profile are controlled, so that the orientation effect of polylactic acid molecules and a crystalline region is improved to the greatest extent; and the unexpected technical effect is gained, and thus the polylactic acid profile which is excellent in mechanical performance is obtained. The orientated-state polylactic acid profile prepared through the method is stable in performance, healthy, harmless and good in biocompatibility.
Owner:SUZHOU SEEMINE NEBULA BIOTECH CO
Process for extracting squalene by complex
InactiveCN104086348AStrong selectivityDissociation is easyHydrocarbonsExtraction purification/separationChemistrySqualene
The invention discloses a process for extracting squalene by complex. The process comprises the following steps of crushing seeds of tea-oil tree, adding petroleum ether, carrying out ultrasonic extraction, filtering, concentrating the filtrate under reduced pressure to obtain a camellia oil fat-soluble substance concentrate; mixing camellia oil fat-soluble substance concentrate with an alcoholic solution of a strong base, heating in a water bath, stirring, refluxing and extracting squalene with petroleum ether to obtain squalene crude product; adding a methanol aqueous solution of silver nitrate into the squalene crude product, under the conditions of oscillation or stirring, carrying out complexation reaction at a low temperature, standing at a low temperature and carrying out liquid separation to obtain an aqueous solution of silver ions-squalene complex as an intermediate product; adding petroleum ether into the aqueous solution of silver ions-squalene complex, heating under reflux, carrying out reverse extraction and then standing and carrying out liquid separation to obtain a dissociated squalene petroleum ether organic phase; cleaning the dissociated squalene petroleum ether organic phase with an aqueous NaCl solution, and then distilling under reduced pressure to recover the organic solvent; cleaning with distilled water again and carrying out vacuum drying to obtain the final product refined squalene.
Owner:NANJING UNIV OF TECH
Method for implementing wireless multimedia sensor node apparatus
InactiveCN101304517ARealize free combinationMeet monitoring needsData switching by path configurationClosed circuit television systemsStatic random-access memoryOperational system
The invention discloses a realization method for the node device of wireless multimedia sensors. A video sensor module (1) takes a processor module (11) as the core to coordinate all tasks and uses a complex programmable logic component module (13) to provide a high frequency clock to cooperate with a video collection module (12). Meanwhile, the processor module (11) can set the parameters of an imager by I 2 C serial communication interfaces and shares a SRAM (static random access memory) module (14) and a flash module (15) with the complex programmable logic component module (13) by a data bus and an address bus; the software system of the video sensor module is compiled by adopting nes C language, and is operated in a Tiny OS (17) operation system environment, which mainly comprises the realization of the following three components: a driving program (18), a database function set (19) and a sensor application program (20). The node device is low in design cost and can be deployed at a large number in a detection area in order to achieve better coverage.
Owner:NANJING UNIV OF POSTS & TELECOMM
Preparation method for rare earth and cobalt permanent magnetic particles with high remanence ratio
ActiveCN104001928AImprove performanceNot easily oxidizedInorganic material magnetismRemanenceOrganic solvent
The invention provides a preparation method for rare earth and cobalt permanent magnetic particles with the high remanence ratio. According to the method, the low-temperature wet type ball milling technology is adopted; the melting point temperature of organic solvents is controlled to be under minus 50 DEG C; the ball milling temperature is higher than the melting point temperature of the organic solvents and lower than 0 DEG C; in the ball milling process, the mass ratio of ball materials is controlled to be 8:1-9.5:1; the ball milling time of every time is controlled to be within 1.5 minutes to 5 minutes, and the total ball milling time is controlled to be within one hour to ten hours; finally, the rare earth and cobalt permanent magnetic particles with the high nanoscale particle content, the high coercivity and the high remanence ratio are obtained. As a result, the overall performance of the rare earth and cobalt permanent magnetic particles is improved, and the practical application area of the rare earth and cobalt permanent magnetic particles is greatly expanded. In addition, the preparation method has the advantages of being low in cost and easy and convenient to operate and having good application prospects.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Extraction method of anthocyanin ingredients
ActiveCN106810904AHigh extraction rateHigh in anthocyaninsSugar derivativesNatural dyesTherapeutic effectAlkaloid
The invention belongs to the field of natural active materials and particularly relates to an extraction method of anthocyanin ingredients. The extraction method includes the steps of 1), extracting raw materials containing the anthocyanin ingredients with ethyl alcohol, and performing alcohol yeast on an extracting solution and then centrifugal filtration to collect a filtrate; 2), extracting the filtrate to obtain the anthocyanin ingredients after filtration. Compared with the prior art, the extraction method has the advantages that the anthocyanin ingredients high in content contain effective components of compound alkaloid, superoxide dismutase and the like and have better therapeutic effect on various tumors and cancers, stroke cardiovascular disease, diabetes, leucoderma, scales disease and cerebral palsy, and blocking of cell tumor variation and caner cell mutation gene variation which are caused by fluid-circulating lymph can be effectively improved.
Owner:北京心颐和创新国际中医药医疗技术研究院(有限合伙)
Molybdenum sulfide/polypyrrole/polyaniline ternary composite material as well as preparation method and application thereof
The invention relates to a molybdenum sulfide / polypyrrole / polyaniline ternary composite material as well as a preparation method and application thereof. According to the molybdenum sulfide / polypyrrole / polyaniline ternary composite material, a polypyrrole nano coating layer and polyaniline nanoparticles are grown on molybdenum sulfide nanosheets in situ. The preparation method comprises the following steps: performing ultrasonic peeling on a solution so as to obtain molybdenum sulfide nanosheets, performing ultrasonic dispersion so as to obtain a molybdenum sulfide nanosheet dispersion liquid, adding an acid solution dispersion liquid of a pyrrole monomer, performing in-situ polymerization in an ice water bath, washing, drying so as to obtain a molybdenum sulfide / polypyrrole composite material, performing ultrasonic dispersion so as to obtain a molybdenum sulfide / polypyrrole dispersion liquid, adding an acid solution dispersion liquid of aniline, performing in-situ polymerization in the ice water bath, washing, and drying, thereby obtaining the molybdenum sulfide / polypyrrole / polyaniline ternary composite material. The molybdenum sulfide / polypyrrole / polyaniline ternary composite material is simple in preparation process, easy to operate and low in reaction temperature, and can be used as an ideal electrode material of a new energy device such as a high-performance super-capacitor and a lithium ion battery.
Owner:DONGHUA UNIV
Method for preparing high bio-availability blueberry anthocyanin
ActiveCN103509834AImprove efficiencyRemove inhibitionOrganic chemistryFermentationBiotechnologyCatalytic transformation
The invention relates to a method for preparing high bio-availability blueberry anthocyanin. The method comprises the following operation steps: preparing a blueberry anthocyanin solution, conducting the catalytic conversion of glycosidase of the blueberry anthocyanin, performing the membrane separation on the blueberry anthocyanin conversion product, separating blueberry anthocyanin in a permeate, and drying and preserving the high bio-availability blueberry anthocyanin. The method has the beneficial technical effects that 1) a membrane reactor integrating reaction and separation is adopted to carry out the enzymic catalytic reaction, so that the use efficiency of the enzyme is improved, the production cost is lowered, the reaction product can be discharged continuously, the inhabitation effect of the reaction product on the enzyme is reduced, and even eliminated, and the speed of the catalytic reaction is increased; (2) a membrane reaction system, a reverse osmosis system and an extraction system are integrated to prepare the high bio-availability blueberry anthocyanin which is suitable for industrialization; (3) the bioavailability of the prepared high bio-availability blueberry anthocyanin is higher than 60%, and the high bio-availability blueberry anthocyanin has a relatively high medical health-care value and a relatively wide practical application field.
Owner:江苏沃田集团股份有限公司
Colorful anticorrosion decorative film with controllable surface color of matrix and preparation method thereof
ActiveCN102744926ABreak through the environmentBreakthrough in corrosion resistanceVacuum evaporation coatingSputtering coatingHardnessApplication areas
The invention discloses a colorful anticorrosion decorative film with controllable surface colors of a matrix and a preparation method thereof. The colorful anticorrosion decorative film is composed of a metal transition layer disposed in a matrix layer and a tetrahedron amorphous carbon film disposed on the surface of the metal transition layer, wherein the thickness of the tetrahedron amorphous carbon film is 10 nm-300 nm; and the colors of the colorful anticorrosion decorative film can be regulated by controlling the thickness of the tetrahedron amorphous carbon film to make the colorful anticorrosion decorative film present colors of prunosus, skyblue, golden yellow, grayish brown, silver grey, light green, etc. Compared with a conventional decorative film, the colorful anticorrosion decorative film has the characteristics of controllable colors, abundant colors, environmental protection, high hardness and excellent corrosion resistant performance, is not only a supplement and improvement for the field of the conventional decorative film, but also breaks through the common application field of the conventional tetrahedron amorphous carbon film, broadens the practical application field thereof, and has good application prospects.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Method for preparing cellulose-reinforced nano-composite fiber membrane by electrostatic spinning
InactiveCN105506858AFlat surfaceUniform diameterFilament/thread formingNon-woven fabricsCellulosePolymer science
The invention belongs to the field of composite membrane preparation and relates to a method for preparing a composite fiber membrane, in particular to a method for preparing a cellulose-reinforced nano-composite fiber membrane by electrostatic spinning, aiming to solve the problems that a PMMA (polymethyl methacrylate) fiber membrane prepared by an existing method is difficult to form, poor in thermal stability and poor in nonpolar PMMA and polar CNC (cellulose nanocrystal) compatibility. The method includes firstly, preparing CNC water suspension; secondly, preparing electrostatic spinning liquid; thirdly, filling an injector with the electrostatic spinning liquid and performing electrostatic spinning so as to obtain the cellulose-reinforced nano-composite fiber membrane. Fibers prepared by the method are smooth in surface and uniform in diameter; along with increase of CNC addition amount, the fiber diameters are decreased gradually and are narrowed in distribution, and a TGA (thermal gravity analysis) curve of nano-composite fibers moves towards a high temperature direction, so that thermal properties of the nano-composite fibers are enhanced. The maximum tensile strength of the prepared fiber membrane can reach 0.3MPa.
Owner:NORTHEAST FORESTRY UNIVERSITY
Molybdenum sulfide/nickel oxide composite material and preparation method and application thereof
InactiveCN106449142AImprove performanceLarge specific surface areaMaterial nanotechnologyHybrid capacitor electrodesNickel saltNew energy
The invention relates to a molybdenum sulfide / nickel oxide composite material and a preparation method and application thereof. The structure of the composite material is that a nickel oxide nanosheet grows on a molybdenum sulfide nanosheet. The preparation method comprises the steps of dispersing the molybdenum sulfide nanosheet into a polar solvent and carrying out ultrasonic treatment to obtain a molybdenum sulfide nanosheet dispersion liquid; dissolving a nickel salt into the molybdenum sulfide nanosheet dispersion liquid, carrying out ultrasonic treatment to obtain a mixed liquid, adding a complexing agent, reacting at 80-100 DEG C for 6-24 hours and washing and drying the product to obtain a molybdenum sulfide / nickel hydroxide composite material; and carrying out thermal treatment to obtain the molybdenum sulfide / nickel oxide composite material. The preparation process is simple and easy to operate, the reaction temperature is low, the security coefficient is high, and the prepared molybdenum sulfide / nickel oxide composite material can be used as an excellent electrode material for new energy devices of a high-performance super-capacitor, a lithium battery and the like.
Owner:DONGHUA UNIV
Star type polysulfone resin industrial synthesis method
InactiveCN105330837AImprove performanceWide range of practical applicationsSynthesis methodsThermal stability
The invention discloses a star type polysulfone resin industrial synthesis method. Reinforced polysulfone resin is prepared through molecular design, excellent performance of original polysulfone is kept, melt viscosity of polysulfone is greatly reduced due to introduction of aromatic polyphenol, processing and forming are easier, thermal stability is higher, and the actual application field of polysulfone is greatly expanded. According to the method, the use amount of a key solvent of N-methyl pyrrolidone can be greatly reduced by controlling the solid content in the salifying stage and the polymerization stage and increasing the solid content in the polymerization stage, and cost is reduced.
Owner:GUANGDONG YOUJU ADVANCED MATERIAL RES CO LTD
Long-persistence luminescent material and its preparing method
ActiveCN1935936AImprove luminous brightnessLong afterglowLuminescent compositionsCrystallographyPhysical chemistry
The invention relates to long afterglow luminescent material. Its expression is as follows: a MO.b M'(S beta Se1-beta).c Al2O3.d B2O3.eP2O5: x Eu.y Ln, whose M is selected from one or many elements combination of Sr, Ca, Ba, Mg; M' is selected from one or many elements combination of Sr, Ca, Ba; ln can be one or many elements combination of Nd, Dy, Tm, La, Ce, Pr etc; a, b, c, d, e, x, and y are mol coefficients and their range are respectively as follows: a is more than 0.5 and less than 6.0; b is not less than 0.0001 and not more than 2.0; c is not less than 0.5 and not more than 9.0; d is not less than 0 and not more than 1.0; e is that as the d; x is not less than 0.00001 and not more than 0.25; y is not less than 0.00001 and not more than 0.3; beta is not less than 0 and not more than 1.0; the sum of the a and b is more than 0.5 and not more than 6.0; the sum of the d and e is not less than 0 and not more than 1.0. The preparing method is high temperature solid phase reaction for first oxidation, and then reduction.
Owner:DALIAN LUMINGLIGHT SCIENCE & TECHNOLOGY CO LTD
Preparation method and application of high-bioavailability Pummelo Peel extract
InactiveCN107245506AReduce manufacturing costImprove utilizationPowder deliveryOrganic active ingredientsSolubilityBioavailability
The invention discloses a preparation method and an application of high-bioavailability Pummelo Peel extract. The method comprises the following operating steps: 1, preparing an extract solution from commercial Pummelo Peel extract; 2, carrying out glycosidase catalytic glycosylation on the extract; 3, carrying out membrane separation and concentration on the above obtained glycosylation product; and 4, drying and collecting high-bioavailability glycosylated Pummelo Peel extract. The application is the application of the high-bioavailability Pummelo Peel extract in the production of medicinal preparations, healthcare products or special formula foods. The high-bioavailability Pummelo Peel extract realizes the glycosylation of Pummelo Peel extract flavones through a biological enzyme conversion technology, so the solubility in water and the in-vitro dissolve-out speed of the Pummelo Peel extract are improved, and the bioavailability is improved.
Owner:FOSHAN GOLDEN HEALTH TECH CO LTD
A rotor radial displacement observation method of bearingless flux switched motor based on space symmetrical flux sum of winding
ActiveCN109067280ALow costWide range of practical applicationsElectronic commutation motor controlVector control systemsNatural coordinate systemThermodynamics
The invention relates to a method for observing the radial displacement of a rotor of a bearingless flux switching motor based on the sum of space symmetrical winding flux linkage. The method comprises calculating the flux linkage of the phase winding of the bearingless flux switching motor by using the detected voltage and current of the phase winding of the bearingless flux switching motor; calculating the sum of two winding flux linkages with 180 degrees spatial symmetry; Transforming the sum of each pair of winding flux linkages with spatial symmetry in a natural coordinate system to a rectangular [alpha][beta] coordinate; according to the relationship between [alpha][beta] coordinate system flux linkage and rotor radial displacement [detal]x, [detal]y, observing the rotor radial displacement [detal]x, [detal]y is observed. The invention does not increase the manufacturing cost of the motor and the control, the radial displacement of the rotor can be observed by utilizing the winding voltage and the current of the motor and the tangential position angle of the rotor.
Owner:FUZHOU UNIV
Signal instantaneous frequency estimation method
PendingCN112507280AWide range of practical applicationsAdaptableComplex mathematical operationsTime domainAlgorithm
The invention discloses a signal instantaneous frequency estimation method, and relates to the technical field of signal processing methods. The method comprises the following steps: inputting a signal and initializing each variable; performing two-dimensional search on the i-th signal to obtain an optimal parameter, and extracting instantaneous frequency estimation of the i-th signal under the optimal parameter; solving the time domain representation of the i-th signal, and subtracting the i-th signal from the original signal to obtain the remaining (i+1)-th signal; repeating the above stepsuntil the energy of the remaining components is less than a set threshold value; and finally, adding the obtained instantaneous frequency estimation of the components to realize instantaneous frequency estimation of the multi-component non-stationary signal. The method provided by the invention not only has adaptability to the number of signal components and relatively strong noise robustness, butalso improves the signal time-frequency distribution energy aggregation and instantaneous frequency estimation precision.
Owner:SHIJIAZHUANG TIEDAO UNIV
A kind of extraction method of anthocyanin component
ActiveCN106810904BIncrease contentGood curative effectSugar derivativesNatural dyesDismutaseCell tumor
The invention belongs to the field of natural active materials and particularly relates to an extraction method of anthocyanin ingredients. The extraction method includes the steps of 1), extracting raw materials containing the anthocyanin ingredients with ethyl alcohol, and performing alcohol yeast on an extracting solution and then centrifugal filtration to collect a filtrate; 2), extracting the filtrate to obtain the anthocyanin ingredients after filtration. Compared with the prior art, the extraction method has the advantages that the anthocyanin ingredients high in content contain effective components of compound alkaloid, superoxide dismutase and the like and have better therapeutic effect on various tumors and cancers, stroke cardiovascular disease, diabetes, leucoderma, scales disease and cerebral palsy, and blocking of cell tumor variation and caner cell mutation gene variation which are caused by fluid-circulating lymph can be effectively improved.
Owner:北京心颐和创新国际中医药医疗技术研究院(有限合伙)
Large-area preparation method for zinc oxide nanorod array
InactiveCN102199770BLow priceAccess to a wide range of channelsZinc oxides/hydroxidesMetallic material coating processesGas phaseDip-coating
The invention belongs to the technical field of zinc oxide nanorod array preparation, and particularly relates to a large-area preparation method for a zinc oxide nanorod array with good orientation and high compactness, which comprises the following steps of preparing a sol, cleaning a substrate, dip-coating and carrying out crystallizing heat treatment. The invention adopts a sol-gel method to directly prepare the zinc oxide nanorod array with good orientation and high compactness on the substrate in a large area without a catalyst or a template, greatly lowers actual production cost and improves process repeatability. The invention can solve the problems of high cost, adoption of the catalyst and the template or a gas-phase zinc oxide transition layer to aid growth, poor production repeatability and the like in existing zinc oxide nanorod array production methods. By using a simple method, the invention directly grow the zinc oxide nanorod array with an ordered array, a uniform structure and high compactness on the substrate in a large area, and the draw ratio of the zinc oxide nanorod is effectively controlled through adjusting dip-coating speed.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Extraction method of purple sweet potato anthocyanin
The invention relates to the field of compound extraction and in particular relates to an extraction method of purple sweet potato anthocyanin. The extraction method is characterized by comprising thefollowing steps: a, adding a metal salt solution, 1-ethyl-3-methylimidazole acetate and 1-ethyl-3-methylimidazole diethyl phosphate into purple sweet potato slurry, and uniformly mixing; carrying outultrasonic and microwave cooperative treatment for 5 to 10 min; then carrying out microwave extraction for 5 to 15 min; carrying out de-coloring and clarificationimpurity removal on an extracting solution, and taking supernatant; concentrating and drying the supernatant to obtain extract; b, carrying out centrifugal separation on the extract and collecting filtrate; concentrating and drying the filtrate to obtain purple sweet potato anthocyanin extract. Compared with the prior art, the extraction method of the purple sweet potato anthocyanin has the advantages of simple technology and convenience for operation; the prepared anthocyanin has the characteristics of high extraction rate, high purity and the like and has very good popularization and application value.
Owner:UNIV OF JINAN
Tool for quickly forming radial temperature gradient distribution
InactiveCN111561835AImprove the level of manufacturing technologyWide range of practical applicationsHeat exchange apparatusOptical elementsInsulation layerEngineering
The invention provides a tool for quickly forming radial temperature gradient distribution. The tool comprises a circular bottom part, a heat transfer body, a circular working platform, a heat-insulation layer, a quartz substrate, heat-conducting silicone grease and the like. The horizontal circular bottom part is used for connecting with a heat source for providing constant temperature; the heattransfer body achieves dynamic temperature balance through a heat-conducting characteristic of the heat transfer body and heat exchange between the heat transfer body and an external environment; theheat-insulation layer is adopted on the side face for insulating heat and preserving heat; the temperature endowed for the circular working platform is uniformly distributed in the circumferential direction and distributed in a certain temperature gradient way in the radial direction; and in order to reduce contact thermal resistance, the quartz substrate and the working platform form surface contact through the heat-conducting silicone grease, and the temperature finally endowed for the surface of the quartz substrate is uniformly distributed in the circumferential direction and distributed in a certain temperature gradient way in the radial direction. The tool for quickly forming radial temperature gradient distribution provided by the invention can quickly realize radial temperature continuous gradient distribution of the circular horizontal substrate, and is controllable in temperature distribution and convenient and reliable to operate.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
A fatty acid/sebs stretchable composite film with enhanced triboelectric output, its preparation method and application
ActiveCN113787797BEasy to operateImprove flexibilitySynthetic resin layered productsElectrical equipmentNanogeneratorCharge retention
The invention discloses a fatty acid / SEBS stretchable composite film with enhanced triboelectric output, its preparation method and application. The stretchable composite film contains two materials of fatty acid and SEBS, and is simple to operate and easy for large-scale industrial production prepared by the solution scraping process. Among them, compared with the functional groups constituting SEBS, the COOH group in fatty acid has higher electronegativity; the introduction of fatty acid can change the triboelectricity and charge retention ability of SEBS film, thereby greatly improving the triboelectric nanogenerator. output performance. Compared with the triboelectric nanogenerator based on the pure SEBS stretchable film triboelectric pair, the output performance of the triboelectric nanogenerator based on the fatty acid / SEBS stretchable composite film triboelectric pair developed by the present invention can reach up to 3.28 times. In addition, the fatty acid / SEBS stretchable composite film developed in the present invention also has excellent flexibility, stretch recovery, and transparency.
Owner:HENAN UNIVERSITY
A method for preparing oriented polylactic acid profiles
ActiveCN106426973BWide range of practical applicationsArranged orderlyCoatingsPolymer scienceBiocompatibility Testing
The invention discloses a method for preparing oriented polylactic acid profiles, which comprises the following steps: 1) Injecting dried polylactic acid raw materials through an injection molding machine to make blanks or heating and pressing polylactic acid raw materials to form blanks by forging ; 2) performing orientation strengthening on the embryo material obtained in step 1), and the orientation strengthening method is extrusion or forging; 3) cooling and quenching the embryo material obtained in step 2), and forming a profile after the embryo material is stabilized. By controlling the process parameters for preparing polylactic acid profiles, the orientation of polylactic acid molecules and crystal regions is improved to the greatest extent, and unexpected technical effects are achieved, thereby obtaining polylactic acid profiles with excellent mechanical properties. The oriented polylactic acid profile prepared by the invention has stable properties, is healthy and harmless, and has good biocompatibility.
Owner:SUZHOU SEEMINE NEBULA BIOTECH CO
A method for extracting anthocyanins
The application discloses a method for extracting anthocyanins. The method for extracting anthocyanins in this application includes using roselle as a raw material, chopping the raw material to 5-10 mesh, and using pure water and adding a compound enzyme preparation to enzymatically process the chopped raw material under the condition of 45-55°C. Extraction, the extract is sequentially centrifuged, ultrafiltered, concentrated by reverse osmosis, purified by macroporous adsorption resin, and freeze-dried to obtain high-purity anthocyanins; the compound enzyme preparation includes cellulase and pectinase. The anthocyanin extraction method of the present application has a simple process and is easy to operate, and has a high extraction rate of anthocyanin, relatively saves production costs, and has higher economic value. The anthocyanins extracted by the method of the application have a purity of more than 70%, so that the extracted anthocyanins have higher medical value and wider practical application fields. Moreover, the method of the present application avoids organic solvent residues, reduces environmental pollution, and has better social benefits.
Owner:SHENZHEN SHENBAO HUACHENG TECH
A kind of extraction method of purple sweet potato anthocyanin
The invention relates to the field of compound extraction and in particular relates to an extraction method of purple sweet potato anthocyanin. The extraction method is characterized by comprising thefollowing steps: a, adding a metal salt solution, 1-ethyl-3-methylimidazole acetate and 1-ethyl-3-methylimidazole diethyl phosphate into purple sweet potato slurry, and uniformly mixing; carrying outultrasonic and microwave cooperative treatment for 5 to 10 min; then carrying out microwave extraction for 5 to 15 min; carrying out de-coloring and clarificationimpurity removal on an extracting solution, and taking supernatant; concentrating and drying the supernatant to obtain extract; b, carrying out centrifugal separation on the extract and collecting filtrate; concentrating and drying the filtrate to obtain purple sweet potato anthocyanin extract. Compared with the prior art, the extraction method of the purple sweet potato anthocyanin has the advantages of simple technology and convenience for operation; the prepared anthocyanin has the characteristics of high extraction rate, high purity and the like and has very good popularization and application value.
Owner:UNIV OF JINAN
Method for preparing cellulose-reinforced nanocomposite fiber film by electrospinning
InactiveCN105506858BFlat surfaceUniform diameterFilament/thread formingNon-woven fabricsCellulosePolymer science
Owner:NORTHEAST FORESTRY UNIVERSITY
A preparation method of rare earth-cobalt permanent magnet particles with high remanence ratio
ActiveCN104001928BImprove performanceNot easily oxidizedInorganic material magnetismRemanenceOrganic solvent
The invention provides a preparation method for rare earth and cobalt permanent magnetic particles with the high remanence ratio. According to the method, the low-temperature wet type ball milling technology is adopted; the melting point temperature of organic solvents is controlled to be under minus 50 DEG C; the ball milling temperature is higher than the melting point temperature of the organic solvents and lower than 0 DEG C; in the ball milling process, the mass ratio of ball materials is controlled to be 8:1-9.5:1; the ball milling time of every time is controlled to be within 1.5 minutes to 5 minutes, and the total ball milling time is controlled to be within one hour to ten hours; finally, the rare earth and cobalt permanent magnetic particles with the high nanoscale particle content, the high coercivity and the high remanence ratio are obtained. As a result, the overall performance of the rare earth and cobalt permanent magnetic particles is improved, and the practical application area of the rare earth and cobalt permanent magnetic particles is greatly expanded. In addition, the preparation method has the advantages of being low in cost and easy and convenient to operate and having good application prospects.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
High temperature resistant water-cooled DC support capacitor
PendingCN109767918AWide range of applicationsWide range of practical applicationsMultiple fixed capacitorsThin/thick film capacitorFilm capacitorHeat sink
The invention belongs to the technical field of film capacitor structures, and in particular relates to a high temperature resistant water-cooled DC support capacitor comprising a heat dissipating aluminum plate, a plurality of heat dissipating components and a plurality of capacitor core groups, wherein the plurality of heat dissipating components are arranged side by side on the heat dissipatingaluminum plate, the heat dissipating components comprise a first heat sink, the plurality of capacitor core groups are vertically stacked on the first heat sink, second heat sinks are disposed between each adjacent two groups of the vertically stacked capacitor core groups, and the first heat sink is integrally formed with the plurality of the second heat sinks. The high temperature resistant water-cooled DC support capacitor has the beneficial effects that the heat of the center of the capacitor cores is transferred to the thin copper piece through the surfaces of the cores and then transferred to the heat dissipating aluminum plate for further heat dissipation by using a thin copper piece with a thickness of 0.5mm in the middle of the superposition of the multiple layers of the capacitor core groups through a unique heat dissipation structure; at the same time, the heat dissipating components can stack the multiple layers of the capacitor core groups, which makes the practical application field more extensive.
Owner:扬州日精电子有限公司
A kind of molybdenum sulfide/nickel oxide composite material and its preparation method and application
InactiveCN106449142BImprove performanceLarge specific surface areaMaterial nanotechnologyHybrid capacitor electrodesNickel saltNew energy
The invention relates to a molybdenum sulfide / nickel oxide composite material and a preparation method and application thereof. The structure of the composite material is that a nickel oxide nanosheet grows on a molybdenum sulfide nanosheet. The preparation method comprises the steps of dispersing the molybdenum sulfide nanosheet into a polar solvent and carrying out ultrasonic treatment to obtain a molybdenum sulfide nanosheet dispersion liquid; dissolving a nickel salt into the molybdenum sulfide nanosheet dispersion liquid, carrying out ultrasonic treatment to obtain a mixed liquid, adding a complexing agent, reacting at 80-100 DEG C for 6-24 hours and washing and drying the product to obtain a molybdenum sulfide / nickel hydroxide composite material; and carrying out thermal treatment to obtain the molybdenum sulfide / nickel oxide composite material. The preparation process is simple and easy to operate, the reaction temperature is low, the security coefficient is high, and the prepared molybdenum sulfide / nickel oxide composite material can be used as an excellent electrode material for new energy devices of a high-performance super-capacitor, a lithium battery and the like.
Owner:DONGHUA UNIV
Method for preparing high bio-availability blueberry anthocyanin
ActiveCN103509834BImprove efficiencyRemove inhibitionOrganic chemistryFermentationBiotechnologyCatalytic transformation
The invention relates to a preparation method of blueberry anthocyanins with high bioavailability. The method comprises the following steps: preparation of blueberry anthocyanin solution, glycosidase-catalyzed conversion of blueberry anthocyanin, membrane separation of blueberry anthocyanin conversion product, separation of blueberry anthocyanin in permeate, high bioavailability Drying and preservation of blueberry anthocyanins. Beneficial technical effects are: (1) Enzyme-catalyzed reaction is carried out by using a membrane reactor integrating reaction and separation, which not only improves the use efficiency of enzyme, reduces production cost, but also continuously discharges reaction products, reduces or even eliminates reaction The inhibitory effect of the product on the enzyme improves the speed of the catalytic reaction; (2) The integrated membrane reaction system, reverse osmosis system, and extraction system prepare blueberry anthocyanins with high bioavailability, which is suitable for industrialization; (3) The present invention obtains High bioavailability The bioavailability of blueberry anthocyanins is higher than 60%, which has higher health care value and wider practical application fields.
Owner:江苏沃田集团股份有限公司
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