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Self-adaptive layering method in 3D (three-dimensional) printing
ActiveCN103777911ACommercializationImprove robustnessImage data processingSpecial data processing applicationsEngineeringComputational physics
The invention discloses a self-adaptive layering method in 3D (three-dimensional) printing. The method comprises the following steps of obtaining a maximal allowed layer thickness and a minimal allowed layer thickness according to a corresponding 3D printing device; obtaining an SLC file of an entity to be processed according to the minimal allowed thickness; reading the SCL file to obtain each layer outline information of the entity; reserving a first layer outline, and setting an initial value i to be 2; calculating an intersected polygonal set between the ith layer outline and the reserved first layer outline; calculating the area ratio parameter and average distance parameter, and judging whether the ith layer outline is reserved or not according to the area ratio parameter and the average distance parameter and t he maximal allowed layer thickness; returning to step 5 if the value of i is not greater than the layering number n of the entity when i is plus one; otherwise, ending the calculation, and outputting the self-adaptive layering result of the entity. The robustness is strong, the method is applicable to different models of different shapes and particularly effective for the large-sized model with a complicated structure; meanwhile, the method is simple, good in universality and more easily embedded into the 3D printing device so as to realize the commercialization.
Owner:ZHEJIANG UNIV
Power generation device and power generation method adopting salinity gradient power
ActiveCN103615363AReduce pretreatment costsImprove power densityMachines/enginesMechanical power devicesHigh concentrationWater turbine
The invention discloses a power generation device adopting salinity gradient power. The power generation device comprises a permeating device and water turbines. The permeating device comprises a permeating electrode formed by parallel connection of a plurality of permeable membrane elements and used for dividing strong salt water and seawater into a high-concentration side and a low-concentration side. The water turbines correspond to the high-concentration side of the permeating device and are connected with an engine through a coupler so as to drive a motor to operate. After the strong salt water and the seawater are fed into the high-concentration side and the low-concentration side of the permeating electrode, the permeating electrode can convert permeating pressure difference into hydrostatic pressure on the high-concentration side and exert back pressure in corresponding size by the aid of permeating electrode, and the water turbines can be driven to rotate to drive a generator to operate. The seawater is taken as a low-concentration water supply side and the seawater higher in concentration is used for permeating power generation, so that fresh water resources can be saved, pretreatment cost can be reduced, the permeating pressure difference can be increased, and power density can be increased; instability and difficult grid connection by the power generation mode are avoided due to the characteristics of easy storage of salt.
Owner:HUAZHONG UNIV OF SCI & TECH
Process for moderate-temperature self-assembly preparation of nano starch from enzymolysis short amylose
The invention discloses a process for moderate-temperature self-assembly preparation of nano starch from enzymolysis short amylose. The process particularly comprises the following steps: (1) preparing a buffer solution; (2) preparing a starch water solution; (3) past-forming; (4) enzymolyzing, and then using anhydrous ethanol to precipitate the degreased starch solution; (5) preparing short amylose; (6) preparing nano starch. According to the process, enzyme hydrolysis starch is adopted to prepare nano starch at 30-70 DEG C in an anabiosis manner, the nano starch prepared by the method is high in productivity, low in cost, safer and more environment-friendly, and can serve as embedding materials of medicines, active ingredients and the like, and the application field of the process in the food industry is widened.
Owner:QINGDAO AGRI UNIV
Lithium-air battery
InactiveCN102948006ACommercializationRealize large-scaleFuel and primary cellsFuel and secondary cellsLithium oxideLithium hydroxide
Owner:IUCF HYU (IND UNIV COOP FOUND HANYANG UNIV)
Self-powered gas sensor based on asymmetricelectrostatic shielding effect and preparation method of self-powered gas sensor
ActiveCN107238652ANovel structureImprove output performanceMaterial analysis by electric/magnetic meansObservational errorCircular disc
The invention provides a self-powered gas sensor based on an asymmetricelectrostatic shielding effect and belongs to the technical field of sensors. The self-powered gas sensor comprises a friction bowlwhich is of a fan-shaped multi-blade structure and arranged in a test chamber and a metal disc with a double-electrode structure, wherein the friction bowl is close to a gas inlet and rotates under the gas flow action to form a contact-separation cycle with electrodes on the metal disc, to-be-tested gas produces the asymmetricelectrostatic shielding effect on the two electrodes on the basis of gas-sensing film adsorption, and concentration of the to-be-tested gas is measured according to output voltage of a device. Compared with an existing gas sensor, an external power supply system is not needed, the concentration of the to-be-tested gas is monitored automatically in real time, output performance is stable, and measurement errors caused by unstable output of the device are reduced; besides, the gas sensor is novel in structure and low in cost, the preparation technology is simple, commercialization is facilitated, and a new development direction is provided for study of the self-powered gas sensor.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Wafer-level low-temperature packaging method based on gold-tin alloy bonding
ActiveCN102130026AHigh bonding strengthReduce weight percentageDecorative surface effectsSemiconductor/solid-state device manufacturingHardnessAlloy
The invention discloses a wafer-level low-temperature packaging method based on gold-tin alloy bonding, a tin-rich (Sn) alloy component is selected, Sn content is equal to 54%-71%, the gold thickness and the tin thickness are designed to be less than 2.1 mu m and 0.7 mu m respectively, and the gold-tin alloy bonding is performed at a certain pressure and a certain temperature within certain time, thereby forming an intermediate layer which is based on an AuSn2 phase (that is an epsilon phase) with high Vickers hardness and realizing the wafer-level low-temperature packaging method with low cost and high bonding strength. The bonding temperature is 140-310 DEG C, and the bonding strength as high as 20-64MPa can be realized. The wafer-level low-temperature packaging method which has the advantages of low cost and high bonding strength can be applied in packaging of devices on any substrates.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Scale production process of nitrobacteria in liquid of high activity and high stability
InactiveCN1546650AFavorable for attachment growthPromote growthBioreactor/fermenter combinationsBiological substance pretreatmentsElutionNitrogen source
The invention discloses a scale production process of nitrobacteria in liquid of high activity and high stability wherein the process comprises, arranging flexible fiber in aerobiosis fermentation apparatus, employing culture medium containing low molecular organic carbon to accelerate the attached growth of the nitrifying bacteria, supplementing low molecular organic carbon source and nitrogen source in time, carrying out timely elution to the nitrifying bacteria on the soft fiber, conserving the collection liquid with the condition of low resolving oxygen, low pH and sealing strip, detecting and loading into packaging appliance.
Owner:韩舞鹰
Novel model domain compensation method in remote voice recognition
ActiveCN103258533AImprove performanceImprove environmental adaptabilitySpeech recognitionMaximum a posteriori estimationSpeech identification
The invention relates to the technical field of voice recognition and discloses a method and system for eliminating reverberation in remote voice recognition. A novel model domain compensation method in the remote voice recognition comprises the steps: an indoor acoustic environment is simulated and impact response sequences of rooms in different positions are generated through inputting indoor space sizes; clustering analysis is conducted on the generated room impact response sequences, so that the indoor acoustic environment is divided into a plurality of zones, and a corresponding compensation matrix of one impact response sequence of each zone is obtained; in an established recognition network, compensation according to frames is conducted on the recognition network through the compensation matrix of each zone and the optimized compensation is obtained from a plurality of recognition results through the maximum posterior probability thought. Due to the fact that the clustering analysis is conducted on the acoustic environment, model compensation with distinctiveness is conducted on the recognition network, and reverberation resistant performance of the remote voice recognition in the indoor environment is greatly improved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Tumor targeting metal complex, synthetic method and application
ActiveCN106866743AImprove utilizationSmall toxicityRuthenium organic compoundsOrganic active ingredientsAbnormal tissue growthApoptosis
The invention discloses a tumor targeting metal complex, a synthetic method and application. The synthetic method comprises the steps of connecting a ligand with a substituent group and a targeting molecule, complexing the ligand and metal ions, and synthesizing to obtain the tumor targeting metal complex, wherein the ligand is one of a phenanthroline derivative, a dipyridyl derivative, a benzimidazole derivative, a phenyl-pyridine derivative and a thiophene-pyridine derivative; the targeting molecule is one of biotin, folic acid, integrin, transferrin, cell-penetrating peptide, octa-poly-L-arginine, MUC-1 attached membrane protein, galactosamine, neovascular targeting peptide and a granulocyte-macrophage colony-stimulating factor; the metal ions are ruthenium, osmium, rhodium or iridium ions. The complex obtained by the method provided by the invention can be selectively absorbed by tumor cells, and induces apoptosis of the tumor cells. In a nude mouse tumor-bearing model, the tumor targeting metal complex can image and treat tumors, and the toxicity of organs and tissues is reduced.
Owner:JINAN UNIVERSITY
Carbon-coated ferrous sulfide negative electrode material, preparation method and sodium ion battery prepared by the same
ActiveCN109167035AEasy to makeAbundant raw materialsCell electrodesSecondary cellsCarbon coatingElectrical battery
The invention relates to a carbon-coated ferrous sulfide negative electrode material, the preparation method and the prepared sodium ion battery thereof, Carbon-coated ferrous sulfide anode material refers to carbon-coated ferrous sulfide and its doped modified material, wherein the particle size of the ferrous sulfide is 100-500 nm, the mass of the carbon coating layer is 3-30% of the mass of theelectrode material, the doping modification elements are one or several of M=Co, Ni, Mn, Ti, Cu, Mg, Ba, Pb, Al, etc., and the mass of the doping modification elements is 0-30% of the mass of the negative electrode material. A metal sulfate and a carbon source are added into deionized water, stirred and dissolved uniformly at room temperature, freeze-dried to obtain a precursor, and calcined at high temperature in an inert atmosphere to obtain a carbon-coated ferrous sulfide negative electrode material. As that negative electrode material of the sodium ion battery, the invention has the advantage of abundant raw materials, simple preparation, short preparation period, low cost, no pollution, good rate performance and strong cycle stability, and is suitable for large-scale production.
Owner:ZHENGZHOU UNIV
Electrocatalyst for proton exchange film fuel cell
ActiveCN1990101AImprove stabilityImprove electrocatalytic activityCatalyst carriersCell electrodesConductive materialsTitanium oxide
An electric catalyst used for proton exchange membrane fuel cells, active component is Pt or PtRu, auxiliary component is titanium oxide; the atom ratio of platinum and titanium is 0.01-99, the atom ratio of platinum and ruthenium is 0.01-99, the particle size of the active component is 1-20nm. The active component can be impregnated in the titanium oxide modified porous conductive material, gained support-type electric catalyst, which contained activity group sharing percentage for the quality of 1-99%, the atom ratio of platinum and titanium is 0.01-99. Active components can be added as a percentage of 0-99% of the auxiliary components, become a multi-component catalysts; adding auxiliary components was transition metal or a transition metal oxides or several. Preparation methods can be used colloidal law or impregnation - Reduction Act. The invention of the electric catalyst can be used in proton exchange membrane fuel cells.
Owner:中科军联(张家港)新能源科技有限公司
Agricultural vehicle independent navigation steering control method based on disturbance observer
InactiveCN104571109ARealize intelligent and precise navigationRealize static error-free trackingAdaptive controlPosition/course control in two dimensionsMovement controlControl mode
The invention discloses an agricultural vehicle independent navigation steering control method based on a disturbance observer, and belongs to the field of high-precision tracking control of agricultural vehicle independent navigation control. The method adopts a closed loop control mode, the practical lateral deviation of a vehicle is roughly calculated by an open loop, correction is carried out by a closed loop, an accumulative error is eliminated until accurate tracking is achieved, and a whole control cycle is achieved. In view of the diversification of an agricultural vehicle motion model, the adoptive control means are also changeable, a pole assignment mode is utilized to achieve an accuracy control over a three order linear and nonlinear model. According to the agricultural vehicle independent navigation steering control method based on the disturbance observer, the control effect, under the setting of the corresponding control means, of the agricultural vehicle motion control method can reach the fact that the overshoot is less than 5% and the adjustment time is less than 3 seconds, and tracking without a steady-state error can be finally achieved.
Owner:NANJING AGRICULTURAL UNIVERSITY
Reductive water non-diaphragm electrolysis device
InactiveCN102020341ARealize popularization of commercializationReduce consumptionWater/sewage treatmentActivated carbonStable state
The invention relates to a reductive water non-diaphragm electrolysis device belonging to the technical field of electrolysis of water and comprising an electrolyzer, a pair of negative electrode and positive electrode arranged in the electrolyzer, and a power supply electrically connected with the negative electrode and the positive electrode; one of the negative electrode and the positive electrode is an activated carbon electrode mainly made of activated carbon, and the other electrode is a metal electrode made of metal; the distance delta between the negative electrode and the positive electrode is not greater than 5m but is greater than 0. The device can adapt to various kinds of raw water and can prepare reductive water with wide pH range and a stable state without adding any substance directly by electrifying; moreover, compared with various water electrolysis devices, the reductive water non-diaphragm electrolysis device has lower power consumption and manufacturing cost, and thereby, the commercial popularization of the non-diaphragm electrolysis device can be implemented.
Owner:李国梅 +2
Preparation method of chitosan/sodium alginate dual-network hydrogel
ActiveCN111662464ACommercializationEasy to makeSkeletal/connective tissue cellsCell culture supports/coatingCrosslinked chitosanUltraviolet lights
The invention discloses a preparation method of chitosan / sodium alginate dual-network hydrogel, comprising the following steps of: carrying out a Schiff base reaction on a prepolymer solution composedof modified chitosan, modified sodium alginate, a photoinitiator and water to obtain single-network hydrogel; and reacting the single-network hydrogel under the irradiation of ultraviolet light to obtain secondary photo-crosslinked chitosan / sodium alginate double-network hydrogel, wherein the modified chitosan is carboxymethyl chitosan grafted with a collagen peptide; the modified sodium alginateis formylated sodium alginate modified by methacrylic acid. The collagen peptide disclosed by the invention has non-immunogenicity, and can be grafted on chitosan through an enzymatic reaction underthe condition of not using a toxic cross-linking agent, so that the cell compatibility and the cell proliferation promoting capability of the material are improved.
Owner:NANJING UNIV OF TECH
Method for building hot-dry rock artificial geothermal reservoir by using natural geological faults
The invention belongs to the technical field of construction of hot-dry rock artificial geothermal reservoirs, and particularly relates to a method for building a hot-dry rock artificial geothermal reservoir by using natural geological faults. The method comprises the following steps that 1, the occurrences, the number and the sizes of the faults in a hot-dry rock geothermal development area are determined; 2, a well group is arranged and designed along the trend of the target fault, wherein according to the arrangement way of the well group, shafts are linearly arranged in a one-injection-two-return way; 3, an injection well is drilled in the center of the trend of the target fault; 4, in the combination of the geophysical prospecting imaging technology, the macro-size of a large-fault and the azimuthal angle of a drilling hole are determined, and according to the macro-size and the azimuthal angle, the occurrence of the target fault can be precisely determined; 5, the target fault and near fracture zones are used as the fracture development artificial geothermal reservoir which is high in permeability and large in heat exchange area; 6, a lot of room-temperature water is injectedinto the injection well, heat exchange is conducted through the natural artificial geothermal reservoir crack network of the target fault, transformation from solid heat to liquid heat is achieved, and high-temperature water and over-hot water vapor are produced from production wells to be used for electricity generation or heat supply.
Owner:TAIYUAN UNIV OF TECH
Modular frame type high-efficiency vertical axis wind turbine
ActiveCN107061151ASave design costSave installation costsMachines/enginesWind motor with perpendicular air flowImpellerEngineering
The invention relates to a modular frame type high-efficiency vertical axis wind turbine. The modular frame type high-efficiency vertical axis wind turbine comprises a wind wheel spindle, a step-up gear box, a permanent magnet synchronous generator, a wind power control cabinet and a peripheral foundation, and is characterized by further comprising a resistance type wind wheel, a force lifting type wind wheel, wind direction flow guide plates and transverse supporting structures; the resistance type wind wheel is mounted on the top of the wind turbine, and the lower part of the resistance type wind wheel is connected with the wind wheel spindle; the force lifting type wind wheel has a three-layer stacked impeller structure, a corresponding section of the wind wheel spindle is arranged in the center of each layer of the force lifting type wind wheel, each layer comprises a plurality of blades, each blade is connected with the corresponding section of the wind wheel spindle through a wind wheel support, and the different sections of the wind wheel spindle are flexibly connected through shaft sleeves; all the blades on the three layers are arranged in a staggered manner, projections of all the blades on the horizontal plane are distributed in a circular area, and the number of the blades in each layer is an odd number; and each wind wheel support comprises a rectangular frame, and one end of each rectangular frame is connected with the wind wheel spindle.
Owner:HEBEI UNIV OF TECH
Method for preparing polyester from (thio)urea/organic alkali catalyzed epoxides and cyclic anhydrides by ring-opening copolymerization
The invention discloses a method for preparing polyester from (thio)urea / organic alkali catalyzed epoxides and cyclic anhydrides by ring-opening copolymerization. Bulk or solution polymerization is adopted in the method, and the method can be used for preparing polyester with different structures and properties from different types of epoxides and cyclic anhydrides. The polymerization reaction isperformed at 45-110 DEG C for 0.3-12 h, the highest conversion rate can reach 100%, and the molecular weight is 1000-40000. The used catalytic system is commercialized and cheap and has high activityand selectivity, ester content of obtained polyester can reach 99%, the types of polyester are increased greatly, the production cost of polyester is reduced, and the application prospects of polyester in degradable materials are broadened.
Owner:宁波梅山保税港区丰邦企业管理合伙企业(有限合伙)
Double-circulation spraying type arsenic removal method and equipment for sulfuric acid industry
InactiveCN102897885AControl the amount added at any timeThe amount added is notWater/sewage treatment by flocculation/precipitationLiquid wasteSlag
The invention provides a double-circulation spraying type arsenic removal method and equipment for sulfuric acid plants. Vulcanizing agents are placed in a hydrogen sulfide generator, generated hydrogen sulfide enters a reaction kettle (3) through a pipeline, and a circulation pump (5) is opened so that materials in the reaction kettle (3) carry out internal circulation; and meanwhile, the rest hydrogen sulfide of the reaction kettle (3) enters a reaction kettle (4), and a circulation pump (6) is opened so that the materials in the reaction kettle (4) carry out internal circulation. After the reaction is carried out for 60 to 90 minutes, liquid after reaction in the reaction kettle (3) is placed in a storage tank through a pipeline, the still standing is carried out for 30 to 60 minutes, the liquid is subjected to filter pressing, the obtained filter slag can be conveyed to a smelting plant for heavy metal recovery, the filter liquid is directly discharged, and waste liquid of the reaction kettle (4) is left to be used as the subsequent reaction liquid of the reaction kettle (3). The method and the equipment have the advantages that the arsenic removal rate can reach higher than 99 percent, the arsenic content of the filter slag is high, and the deep processing is favorably realized.
Owner:GUANGXI NANNING DHXY ENTECH
Method for synchronously synthesizing transition metal nitride/graphitized carbon through ion exchange resin
InactiveCN103111316ASimple processEasy to operatePhysical/chemical process catalystsCell electrodesSynthesis methodsIon exchange
The invention provides a method for synchronously synthesizing transition metal nitride / graphitized carbon through an ion exchange resin, relates to a transition metal nitride / graphitized carbon synthesis method and solves the problems of high cost, severe conditions and complicated process in the existing transition metal nitride / graphitized carbon nano compound preparation technology. The synthesis method comprises the following steps: 1, pretreating a carbon source; 2, combining a mixed solution of a graphitizing catalyst and transition metal salt and the pretreated carbon source under electrostatic action; 3, performing precarbonization treatment; 4, performing heat treatment in an inert atmosphere; and 5, performing acid treatment, then washing with distilled water, and drying to obtain the transition metal nitride / graphitized carbon nano compound. The product prepared by the invention has excellent electrocatalytic property when being used as a carrier, and is simple in process, low in energy consumption, low in cost, green, safe, suitable for large-scale production and easy to realize commercialization. The invention is applicable to the field of energy storage and conversion.
Owner:HEILONGJIANG UNIV
Total internal reflection type refractive index sensing method not affected by light source drift
ActiveCN110044847AHelp usabilityCommercializationPhase-affecting property measurementsLiquid ChangeTotal internal reflection
The invention provides a total internal reflection type refractive index sensing method not affected by light source drift. The invention proposes the total internal reflection type refractive index sensing method in which the influence of the light source drift can be completely eliminated for the first time, the requirements for the stability of the light source are reduced, and the measurementprecision are improved. The method is as follows: before the incident light enters a sensor, incident light passes through a light intensity modulator and a quarter-wave plate, a light intensity differential signal output by the sensor is measured, an optical axis angle of the quarter-wave plate is accurately adjusted to minimize or remove an AC signal in the differential signal, when the refractive index of the measured liquid changes, the AC signal of the differential signal becomes larger, by accurately adjusting the optical axis angle of the quarter-wave plate, the AC signal in the differential signal is minimized or removed, and the refractive index of the measured medium is determined according to a corresponding relationship between the rotation angle of the quarter-wave plate and the change in the refractive index.
Owner:NANKAI UNIV
Method using mulberry silk to prepare viscose silk fibroin hydrogel
ActiveCN107619481AImprove mechanical strengthGood economic and social benefitsProsthesisFibroinChemistry
The invention discloses a method using mulberry silk to prepare viscose silk fibroin hydrogel. The method mainly includes: selecting mulberry silk fibroin which is good in biocompatibility and wide insource to serve as the base material, using polyethylene glycol as the auxiliary material, and adjusting the pH of a mixed solution to prepare the novel gel with certain viscosity. The novel gel is used for soft tissue injection filling. The method has the advantages that the method is simple to operate, does not need precious equipment and is high in biosafety; the prepared fibroin gel can be easily retained in a body and is less prone to loss, injection filling times can be reduced, resource waste and patient economic burden are reduced, a new application field of fibroin materials is developed, and considerable social and economic benefits are achieved.
Owner:ZHEJIANG SCI-TECH UNIV
High-quality two-dimensional layered lead iodide perovskite single-crystal material and production method thereof
InactiveCN109853031AQuality improvementImprove stabilityPolycrystalline material growthFrom normal temperature solutionsPhotonicsSingle crystal
The invention discloses a two-dimensional layered lead iodide perovskite single-crystal material and production and application thereof. The two-dimensional layered lead iodide perovskite single-crystal material is of a natural quantum well structure, and has dielectricity of organic materials and conductivity of inorganic materials, and by adjusting components of the material, controllable adjustment of the width and the energy levels of multiple quantum wells can be achieved. The two-dimensional layered lead iodide perovskite single-crystal material produced through a method has the characters of being high in quality, large in size and high in phase purity, meanwhile, production operation is simple, the cost is low, and large-batch production can be achieved, so that the two-dimensionallayered lead iodide perovskite single-crystal material has important application prospects in the fields of solar cells, light emitting diodes, photonic crystals, photoelectric detectors and the like.
Owner:CENT SOUTH UNIV
Staged power generation system and staged power generation method by salt difference energy
ActiveCN103603764AImprove power densityTake advantage ofHydro energy generationMachines/enginesSolubilityHigh concentration
The invention discloses a staged power generation system by salt difference energy. The staged power generation system comprises a multistage osmosis device serially formed by a plurality of osmosis devices and a plurality of water turbines, each osmosis device comprises osmosis stages, the osmosis stage is formed by a plurality of osmosis membrane elements in parallel and used for dividing solutions different in concentration into a high-concentration side and a low-concentration side, the high-concentration side of each osmosis device corresponds to a water turbine, and the water turbines are coaxially connected to be used for driving a generator to operate; after a high-solubility solution and a low-solubility solution are respectively fed into the high-concentration side and the low-concentration side of each osmosis stage respectively, the osmosis stage can convert osmotic pressure difference into high-concentration side hydrostatic pressure, and the water turbines can be driven to rotate to drive the generator to operate by the aid of corresponding-size back pressure exerted to the osmosis stages. The invention further discloses a staged power generation method by the salt difference energy. Since different back pressure is exerted to different stages, system output power is enabled to be close to the maximum value, and power density of membranes is increased. Meanwhile, the osmotic membranes are fully utilized.
Owner:HUAZHONG UNIV OF SCI & TECH
Turbine device, and waste heat recovery power generation system including same
Provided are a turbine device and a waste heat recovery power generation system including same. According to the present invention, a mechanical (contact) type bearing structure is replaced with a contactless electromagnetic bearing so as to extend the lifespan of a turbine and increase power generation efficiency. The use of waste heat can be facilitated, and the operation of the device can be maintained stably through the improvement of a structure of a disk means and an appropriate arrangement of a mechanical bearing means.
Owner:浦项股份有限公司
Chemical method for synthesizing L10-FePt by sequentially coating nanopowder nuclear body
The invention relates to a chemical method for synthesizing L10-FePt by sequentially coating a nanopowder nuclear body. FePt nanoparticles with chemical degree of order is synthesized at lower temperature, and the chemical method aims at sequentially coating a Fe atom layer and a Pt atom layer on the generated nanoparticles in hydrothermal reduction so as to improve the degree of order of Fe element and Pt element and further prepare L10-FePt nanoparticles at lower temperature. According to the chemical method, the chemical degree of order of the nanoparticles is regulated by controlling the degree of order of the Fe element and the Pt element in particles, so that the L10-FePt nanoparticles can be synthesized at lower temperature. As the L10-FePt nanoparticles can be prepared at lower temperature, the large-scale industrial production of L10-FePt nanoparticles can be realized, and further the commercialization of magnetic storage media with super-high density can be realized.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
A kind of salt difference power generation device and method
ActiveCN103615363BReduce pretreatment costsImprove power densityMachines/enginesMechanical power devicesHigh concentrationWater turbine
Owner:HUAZHONG UNIV OF SCI & TECH
Hole transporting material and preparation method thereof and perovskite solar cell
ActiveCN110078739AImprove stabilityPlay a protective effectOrganic chemistrySolid-state devicesSolubilityPerovskite solar cell
The invention belongs to the technical field of solar cells, and particularly relates to a hole transporting material and preparation method of the hole transporting material and a perovskite solar cell. According to the invention, the hole transporting material introduces 6 methyls and a long-chain alkane on a phthalocyanine ring, thereby being capable of inducing phthalocyanine molecules to forma flat surface-surface stacking molecular configuration on a perovskite layer after film forming so as to enhance the hole mobility of a phthalocyanine molecular film in a solar device and increase the organic solubility of phthalocyanine materials, and then the whole liquid-phase process preparation of the device is realized. Furthermore, the hole transporting material has excellent hydrophobicity, thereby being capable of better protecting a perovskite light absorbing layer to be prevented from being decomposed by the influence of water and oxygen, thereby prolonging the service life of a perovskite solar cell device; the hole transporting material is used for the n-i-p perovskite solar cell device, so that the photoelectric conversion efficiency of the device can reach 17.27%, and thedevice further can maintain more than 90% of the initial photoelectric conversion efficiency after the device is operated for 1300h and is high in stability.
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
Manufacturing method of edible pectin chitosan collagen 3D scaffold for cell culture meat
InactiveCN113208059ACommercializationPerformance impactCell culture supports/coatingSkeletal/connective tissue cellsBiotechnologyCell adhesion
The invention relates to a manufacturing method of an edible pectin / chitosan / collagen 3D scaffold for cell culture meat, the pectin / chitosan / collagen 3D scaffold manufactured by the method can be used for culturing skeletal muscle cells, provides support for manufacturing the cell culture meat, and belongs to the field of future food science and technology. The method comprises the following steps: uniformly mixing pectin (high methoxyl pectin and low methoxyl pectin) with a certain concentration, chitosan and collagen according to a certain ratio, fully reacting at room temperature for more than 2 hours, freezing at-80 DEG C overnight, and freeze-drying to obtain the pectin / chitosan / collagen 3D scaffold. The manufacturing method is simple and efficient, the 3D scaffold is formed through electrostatic interaction among pectin, chitosan and collagen under the condition that a toxic cross-linking agent is not used, and the obtained pectin / chitosan / collagen 3D scaffold has good cell adhesion and compatibility and can be used for skeletal muscle cell culture. The invention provides a manufacturing method of a novel and non-toxic 3D scaffold for the research of cell culture meat.
Owner:NORTHWEST A & F UNIV
Sodium-sulfur electrical storage battery
ActiveCN103227348AReduce your weightMaterials are safe and easy to obtainActive material electrodesSecondary cellsSulfurSolvent
The invention discloses a sodium-sulfur electrical storage battery comprising an anode, a cathode and a sodion conduction film which are accommodated in a cell housing, wherein the anode is composed of solid metallic sodium and an anode solvent, and the anode solvent dissolving the metallic sodium forms an anode electrolyte; the cathode is composed of solid elemental sulfur and a cathode solvent, and the cathode solvent dissolving the elemental sulfur forms a cathode electrolyte; the sodion conduction film separates the anode electrolyte and the cathode electrolyte and only enables the sodion to be conducted from the anode electrolyte to the cathode electrolyte or from the cathode electrolyte to the anode electrolyte. The sodium-sulfur battery provided by the invention is operated under a temperature of 20-98 DEG C being lower than melting points of the sodium and the sulfur, reduces hidden troubles existing in high-temperature operation for the present sodium-sulfur batteries, reduces operation cost of the sodium-sulfur battery, and broadens commercial large-scale application range of the sodium-sulfur battery.
Owner:内蒙古默锐能源材料有限公司
Ventilating shoe capable of being pumped by using outsole
Provided is a ventilated shoe. The shoe includes an upper. An outsole has an upper edge end provided on an upper sole part, an air chamber provided inside the upper edge end, and an ascending and descending edge surface provided on an outer edge of a lower sole part in such a way as to be inclined outwards and upwards from a bottom surface, the outer edge of the lower sole part being provided under the upper edge end to be opposite thereto. An insole is secured to the upper edge end to cover a top of the air chamber, with a plurality of ventilation holes being formed in a front portion thereof. A backflow prevention valve prevents outside air supplied to the air chamber from flowing backwards. An air inlet pipe supplies the outside air to the backflow prevention valve.
Owner:JANG CHANG WON +1
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