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137 results about "Diffusion velocity" patented technology
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Diffusion velocity. The relative mean molecular velocity of a selected gas undergoing diffusion in a gaseous atmosphere, commonly taken as a nitrogen (N 2) atmosphere; a molecular phenomenon that depends upon the gaseous concentration as well as upon the pressure and temperature gradients present.
Video smoke detection method based on mixed Gaussian model and morphological characteristics
ActiveCN101908141AAccurate identificationIncrease in false positivesCharacter and pattern recognitionClosed circuit television systemsMorphological filteringAmbiguity
The invention discloses a video smoke detection method based on a mixed Gaussian model and morphological characteristics. The method comprises the following steps of: acquiring a foreground motion area by adopting a mixed Gaussian model algorithm aiming at a video image acquired by a supervisory camera of a fixed view field; then removing noise points by adopting morphological filtering; counting the morphological characteristics of the motion area, such as the diffusion velocity, the geometry, the ambiguity, the irregularity, and the like; and finally, carrying out a synthetic judgment on the counted characteristics of the motion area so as to judge whether smoke exists in the video image or not. The self-adaptation mixed Gaussian model (i.e. each pixel is modeled by utilizing mixed Gaussian distribution) can be used for reliably eliminating the influences of interferences of illumination changes, messy background motions, ripples, leaf wobbles, rain, snow, and the like. The invention realizes the quick and accurate identification on whether the video image has smoke or not through the synthetic judgment of the detected various morphological characteristics of the foreground motion area and also greatly reduces the false alarm rate.
Owner:丁天 +3
High-throughput solvent-resistance interfacial polymerization composite membrane and preparing method thereof
ActiveCN110064312AChange the speed of diffusionImprove throughputMembranesReverse osmosisOrganic solventUltrafiltration
The invention belongs to the field of membrane preparation, and particularly relates to a high-throughput solvent-resistance interfacial polymerization composite membrane and a preparing method thereof. The preparing method of the high-throughput solvent-resistance interfacial polymerization composite membrane comprises the steps that a solvent-resistance gel membrane is taken as a base membrane,then a polyamide function separation layer is deposited on the surface of the base membrane through interfacial polymerization to obtain the high-throughput interfacial polymerization composite membrane. According to the high-throughput solvent-resistance interfacial polymerization composite membrane and the preparing method thereof, the gel membrane instead of a common non-gel polymer ultrafiltration membrane is taken as the base membrane, so that the diffusion velocity of a reaction monomer on an interface in the interfacial polymerization process is changed, and thus the ultrathin high-throughput composite membrane is prepared. The obtained composite membrane can be applied to reverse osmosis, nanofiltration and organic-solvent-resistance nanofiltration.
Owner:袁书珊
Method for preparing recycled aggregate concrete from steel fiber rubber and slag
ActiveCN101774223AImprove crack resistanceImprove insulation effectSolid waste managementClimate change adaptationCrack resistancePowder mixture
The invention discloses a method for preparing recycled aggregate concrete from steel fiber rubber and slag. The method comprises the following steps: waste concrete is crushed, separated, screened, washed and dried to obtain waste concrete recycled aggregate; waste tires are coarsely crushed, separated, washed and dried to obtain steel fiber rubber particles; the slag is crushed, screened, magnetically separated and classified by air to obtain slag powder; the waste concrete recycled aggregate, the steel fiber rubber particles, cement slag powder mixture, natural coarse aggregate, sands and water are stirred in proportion; the cracking resistance, thermal insulation performance and energy absorbing and noise reducing performance of the recycled aggregate concrete can be effectively improved by modifying the steel fiber rubber particles; the working performance of green concrete and contraction performance of the concrete in each curing time can be improved by modifying the slag powder; and the infiltration resistance and carbonization resistance can be effectively improved and chloride ion diffusion velocity of the concrete can be effectively reduced. The material is a cycled economical building material, and can improve the material performance on the basis of not increasing cost.
Owner:GUANGDONG DIANBAI CONSTR GRP
DICOM image blood flow analysis system
ActiveCN105825516AIntuitive image informationRich image informationImage enhancementDiagnostic signal processingDICOMCluster algorithm
The present invention relates to a DICOM image blood flow analysis system. The DICOM image blood flow analysis system comprises: a DICOM file reading and playing module configured to open one or more than one DICOM files to display continuous multi-frame images; a morphology transformation module configured to perform preprocessing of the DICOM files; a blood vessel area extraction module configured to extract the main body of the blood vessel radiography based on a DBSCAN cluster algorithm and extract the fine marginal portion of the blood vessel radiography through multi-scale Gabor filtering; a blood vessel central axis extraction module configured to fuse the context information to perform blood vessel enhancement based on the extracted blood vessel area, extract a partial extreme point to act as a blood vessel central axis and remove partial spurious central axis and find out a communication component so as to complete the central axis extraction through a central axis tracking morphological method; and a calculation module configured to analyze each frame of radiography liquid expansion area and calculate the average diffusion speed and instantaneous diffusion speed of the radiography liquid. The DICOM image blood flow analysis system is able to analyze the contrast agent expansion speed in a blood vessel in real time.
Owner:SHANGHAI HUIDA MEDICAL INSTR
Workplace occupational exposure simulation analysis method based on computational fluid dynamics (CFD) technology
Owner:天津渤海化工集团公司劳动卫生研究所
Method for removing subaqueous organic matter with catalysis ozone oxidization
InactiveCN101269892AIncrease profitSolve for uniformityMultistage water/sewage treatmentWater/sewage treatment by reductionFilling materialsTower
The invention relates to a method of catalytic ozone oxidation organic matter removal in water, which belongs to the water treatment technical field. The method solves the problems that: in the existing method of catalytic ozone oxidation organic matter removal in water, the utilization ratio of ozone is low, the organic pollutant is not enough oxidized, the cost is higher, and catalyzer is easily lost by adopting the metal catalytic ozone oxidation technology, the application is difficult to use in mass production, uneven surface exists on the solid catalyzer, and the inner diffusion velocity is lower. The method has the steps that: firstly, water containing the organic pollutant enters into an ozone contact tower; secondly, output water of the ozone contact tower enters into a catalyzing bed the inner part of which is filled with zerovalent ferric and filling material. The method solves the problems that uneven surface exists on the solid catalyzer and the inner diffusion velocity is lower, has the advantages of high catalytic activity, low cost, homogeneous catalysis oxidation and heterocatalysis oxidation of the catalyzer easily separating from water, improves the utilization ration of the ozone, and can be applied to the mass production.
Owner:HARBIN INST OF TECH
Low steady-speed radial flow clean room air-conditioning air supply and return system
ActiveCN103322657ASmall running resistanceSlow down the spreadDucting arrangementsLighting and heating apparatusSuspended particlesFresh air
The invention relates to a low steady-speed radial flow clean room air-conditioning air supply and return system which comprises a radial flow air supply channel device, a wall-mounted air return channel device, an air-conditioning outlet static pressure box, an air-conditioning air return port static pressure box and an air-conditioning fresh air port filtering device, the radial flow air supply channel device comprises a clean room roof, a static pressure box type air supply channel, a pressure equalizing partition plate, an arc-shaped radial flow cover, a damping layer and a high efficiency filter bank, and the wall-mounted air return channel device comprises a sandwich wall type air return duct and a filtering device mounted at an air return port of the lower end of the sandwich wall type air return duct. The air supply and return system has the advantages that the operation resistance of the air supply and return system is reduced, the diffusion speed of harmful suspended particles in a clean room is the lowest, fewer high efficiency filter banks are used, the clean room is low in construction investment, energy-saving in operation and convenient to maintain, the air cleanliness class of the clean room is improved by more than 30% as compared with that of a mixed airflow clean room, clean time can be shortened by more than 40%, and airflow in the clean room is reasonably distributed.
Owner:SHIJIAZHUANG AOXIANG MEDICAL ENG
3D printing method of lithium battery
ActiveCN104409774ANovel preparation methodSimple processCell electrodesFinal product manufactureEngineeringSlurry
The invention relates to a 3D printing method of a lithium battery. The method comprises the following steps: firstly, positive and negative slurry and diaphragm slurry required for 3D printing are prepared; secondly, each slurry is respectively printed into positive and negative electrodes of a lithium battery and an electrode diaphragm layer positioned between the positive and negative electrodes; thirdly, under the protection of argon in a test-tube furnace, heat treatment is carried out to prepare an annular electrode composite material assembled by overlapping the positive electrode, the diaphragm layer and the negative electrode; and finally, the annular electrode composite material is transferred into a glove box for packaging so as to obtain an annular lithium ion battery formed by successively overlapping the cathode, the diaphragm and the anode. The preparation method is novel, and the technology is simple, accurate and controllable. The prepared material has a special structure formed by successively overlapping the cathode, the diaphragm and the anode and has large specific surface area. Each cathode, diaphragm and anode annular material itself forms a miniature lithium ion battery. Diffusion distance of lithium ion in the material is shortened greatly, and corresponding diffusion velocity is improved. The lithium ion battery has high ionic and electronic conductivity.
Owner:FUZHOU UNIV
Method for fabricating transistor of semiconductor device
ActiveUS20050112835A1Slow down the spreadImprove short channel effectTransistorSemiconductor/solid-state device manufacturingSalicideHigh density
Disclosed is a method for fabricating a transistor of a semiconductor device, the method comprising the steps of: providing a semiconductor; forming a gate electrode; performing a low-density ion implantation process with respect to the substrate, thereby forming an LDD ion implantation layer; forming an insulation spacer on a sidewall of the gate electrode; forming a diffusion barrier; performing a high-density ion implantation process with respect to the substrate, thereby forming a source / drain; performing a first thermal treatment process with respect to a resultant structure, so as to activate impurities in the source / drain, and simultaneously causing a diffusion velocity of the impurities in the source / drain to be reduced by the diffusion barrier; and forming a salicide layer.
Owner:ATRIA TECH INC
Water-soluble chemical fertilizer
InactiveCN102010273AImprove breathabilityImprove water holdingFertilizer mixturesPlant rootsPotassium
The invention relates to a water-soluble chemical fertilizer. The water-soluble chemical fertilizer comprises the following components in part by weight: 20 to 45 parts of urea, 20 to 79 parts of phosphate compound, 20.5 to 48 parts of sulfate, 0.1 to 1.5 parts of borax, 0.1 to 2 parts of ammonium molybdate heptahydrate and 0.5 to 15 parts of polypropylene compound. As the water-soluble chemical fertilizer is formed by constructing major element in full-instant powder, a stable soil agglomerated particle structure can be formed after the water-soluble chemical fertilizer is applied, so that air permeability of soil, chemical and physical environments of every nutritive element in the soil, adsorption quantity of the surface of soil particles, and adduction of every nutritive element can be improved; and after the water-soluble chemical fertilizer is applied, a nutrition protecting area can be quickly formed at plant roots, so that the diffusion velocity and migration distance of nutrients such as nitrogen, phosphorus, potassium and the like in the soil are increased so as to promote root systems to uptake and use water and the nutrients.
Owner:周志勇
Specific crystallizer casting powder for sulphur free-cutting steel and production method thereof
The invention discloses a specific crystallizer casting powder for sulphur free-cutting steel and production method thereof, mass percents of chemical components thereof are as follows: 29-35% of CaO, 25-30% of Sio2, 2-5% of MgO, 3-5% of Al2O3, 2-6% of Fe2O3, 5-11% of NaO?, 0-2% of Li2O, 5-9% of CaF2?, 0-5% of MnO, 0.5-2.0% of Al grey, 0-2% of B2O3, 5-11% of solid carbon, and allowance is building material adhesive and water. The sulphur free-cutting steel has low high-temperature strength and high crack sensitivity, and the casting powder should have properly high basicity. Basicity of a slag is improved, so that diffusion velocity is accelerated, and absorption of impurities in molten steel is benefited. So, improvement of basicity is an effective means for improving absorption of the impurities and control of surface longitudinal crack.
Owner:HENAN TONGYU METALLURGY MATERIALS GRP
7-series aluminum alloy for container and machining process thereof
The invention belongs to the technical field of aluminum alloy machining and manufacturing and relates to a 7-series aluminum alloy for a container and a machining process thereof. The machining process comprises the steps of material mixing, smelting, casting, soaking, saw cutting and face milling, heating, hot rolling, solution quenching and artificial ageing. By changing alloy components, the main low-melting-point phases of an aluminum alloy cast ingot before homogenizing treatment belong to MgZn2, the diffusion velocity of Mg and Zn in an Al matrix at high temperature is high, and the MgZn2 phases can be rapidly dissolved. Thus, grains can be protected against abnormal growth without overburning within the soaking temperature range of 440-500 DEG C. After the aluminum alloy cast ingotis subjected to homogenizing heat treatment, the big low-melting-point phases are dissolved and disappears or is in a rounded spherical and are rolled and crushed into fine soluble phases, the high supersaturated solid solution creation condition is provided for short-time solution quenching treatment of a finished product, and then an aluminum alloy plate with good plate shape and strength matching degree is obtained.
Owner:TIANJIN ZHONGWANG ALUMINUM IND CO LTD
Heat treatment method for improving strength and conductivity of copper alloy of Cu-Cr series
InactiveCN101565803ASmall sizeIncrease the number ofHeat treatment process controlContact lineElectron
The invention pertains to the field of heat treatment of nonferrous metal and relates to a heat treatment technique for improving the strength and conductivity of copper alloy of Cu-Cr series. The alloy is used as lead frame materials, electrified railway contact lines and the like in the electronic industry. The invention adopts a secondary ageing heat treatment technique with two stages, which comprises the following steps: copper alloy containing supersaturation precipitated phase element Cr after solution treatment is first aged at lower temperature for a long time for leading the precipitated phase to be in a fine and dispersed distribution and the precipitation to be relatively sufficient, and laying a foundation for obtaining high strength; then the ageing temperature is properly increased to improve the diffusion velocity of atoms, thus leading the Cr elements in the residual solution in the Cu matrix to be further precipitated; as the precipitated phase exists, part of the newly precipitated Cr is precipitated on the existing Cr particles; the existing dispersed distribution of Cr is retained at the lower temperature, and the other part of Cr is also precipitated, thereby forming more dispersion-distributed nanometer particles, greatly improving the strength of the alloy, and simultaneously purifying the copper matrix and improving the conductivity.
Owner:UNIV OF SCI & TECH BEIJING
Discontinuous unsaturation soil rainfall infiltration physical simulation system and measuring method
InactiveCN109752303AEasy to understandStable data supportEarth material testingPermeability/surface area analysisData acquisitionMoisture diffusion
The invention provides a discontinuous unsaturation soil rainfall infiltration physical simulation system and a measuring method. The discontinuous unsaturation soil rainfall infiltration physical simulation system comprises a testing soil groove, a bleed-and-feed system and a measuring system, the measuring system comprises a soil water potential measuring unit, a soil moisture measuring unit, awater head measuring unit, a soil temperature measuring unit, a soil moisture diffusion measuring unit, a data acquisition instrument and a data storage computer. According to the discontinuous unsaturation soil rainfall infiltration physical simulation system and the measuring method, a researcher can be helped to better understand related conception of unsaturated zone unsaturation seepage experiment and unsaturated zone rainfall infiltration preferential flow under the condition of understanding a discontinuous medium, permeability coefficients, soil matrix potential, soil moisture horizontal diffusion speed and the like of soil can be measured in practical application, the diffusion rate, an infiltration curve and a motion equation of unsaturation soil moisture are studied by using a measuring result, and stable data support is provided for studying the influence of soil characteristics at different collapse stages on unsaturated zone moisture displacement.
Owner:HENAN UNIV OF URBAN CONSTR
Desalination device of sea water
InactiveCN1769194ALow viscositySimple structureGeneral water supply conservationSeawater treatmentWater desalinationReverse osmosis
The invention discloses a sea-water distillator combining high-temperature electrodialysis principle and film water treatment technique. It solves the drawback that, in the process of sea-water desalination, the energy-consumption is high and the efficiency is low with the prior art. The sea-water distillator comprises of an admitting pipe column 1, a negative plate 2, a positive plate 11, a bottom board 3, a reverse osmosis membrane 4, a rotor supporting jacket 5, a stator 6, a rotor 7, a rotating jacket 8, a sealed end cap 9, an inner sleeve 10, a baffle 12, a stud 13 and a bearing 14, the upper edge of 1 being through and fixed on 3, 6 and 7 making up an electromagnetic heater, the cave of 1 connecting with the water-passing hole of 8 by the feed-through of baffle, 4 covering on the cylindrical surface of 8 and retaining the water-passing hole, 2 and 11 being through 3 and provided between the inner hole of 8 and the excircle of 5. Sea-water flows into 1 and enters between 5 and 8, 2 and 11 can decrease the viscosity and improve the diffusion velocity of sea-water and increase the conductance between sea-water and 4, and it can generate centrifugal force and provide hyperfiltration pressure for the film when 8 rotates with a high speed.
Owner:HARBIN INST OF TECH
Laminated ceramic electronic component and manufacturing method therefor
ActiveUS20100328843A1Maximize the effectAdhesion strength and resistance to moistureFixed capacitor electrodesStacked capacitorsCopper platingElectronic component
In a method for manufacturing a laminated ceramic electronic component, after a plating layer for an external terminal electrode is formed by applying copper plating to an end surface of a component main body at which respective ends of a plurality of internal electrodes primarily including nickel are exposed, when a heat treatment at a temperature of about 800° C. or more is applied in order to improve adhesion strength and resistance to moisture of the external terminal electrode, voids may occur in the plating layer. The step of applying a heat treatment at a temperature of about 800° C. or more to a component main body with plating layers formed thereon includes not only a step of maintaining a top temperature of about 1000° C. or more but also a step of maintaining a temperature of about 600° C. to 900° C. at least once before the step of maintaining the top temperature. These steps preliminarily diffuse copper included in the plating layers, which has a relatively high diffusion velocity, into the internal electrodes primarily including nickel, thereby reducing a difference in diffusion velocity between copper and nickel at the top temperature, which causes the occurrence of voids.
Owner:MURATA MFG CO LTD
Preparation of tube wall layer number-controllable nano-carbon tube
InactiveCN101302006AControl the rate of diffusionControl the number of pipe wall layersPolycrystalline material growthFrom chemically reactive gasesCarbon nanotubeNano carbon
The invention discloses a method for preparing a carbon nano-tube with controllable number of tube wall layers. The method comprises the following steps of: preparing transition metal salt, support salt and dispersant into sol or solution with de-ionized water after the transition metal salt, the support salt and the dispersant are mixed, and drying the sol or the solution with a sol-gel method or a freeze-drying method, thereby acquiring catalyst; putting the catalyst into a catalyst chamber which is sent into a thermostatic reactor of a CVD device and feeding carbon source gas in the protecting atmosphere to grow the carbon nano-tube. The method can control the diffusion velocity of carbon atoms in metallic nano-particles through changing the flow rate of the carbon source gas and the mol ratio of the transition metal salt to the support salt to the dispersant, thereby controlling the number of the tube wall layers of the carbon nano-tube. The method has a simple process, and prepares the carbon nano-tube with controllable number of the tube wall layers with high purity, thereby overcoming the defects that the prior prepared multi-wall carbon nano-tube is actually a carbon nano-tube mixture with uncertain number of tube wall layers, and providing a foundation for scientific research on various carbon nano-tubes with different numbers of the tube wall layers.
Owner:ZHEJIANG UNIV
Heavy oil reservoir dissolved gas drive numerical simulation method with bubble oil phenomenon
ActiveCN106156439AEnhanced overall recoveryHigh simulationClimate change adaptationSpecial data processing applicationsGas phaseMathematical model
The invention provides a heavy oil reservoir dissolved gas drive numerical simulation method with a bubble oil phenomenon. The method comprises the following steps: in a microscopic view, establishing a mathematical model for describing a bubble nucleation and growth principle; on the basis, deducing a diffusion speed equation of gas from dissolved gas to bubbles; establishing a three-dimensional two-phase multi-component dissolved gas drive mathematical model; combining a finite difference method and an implicit pressure-explicit saturation (IMPES) method to solve; determining the saturation degree, the dissolved gas-oil ratio, the oil yield and the gas yield of oil reservoir pressure, an oil phase and a gas phase; and then, taking heavy oil reservoir dissolved gas drive experiments with the bubble oil phenomenon as evidences and determining uncertain parameters of the model through an experiment fitting method; and finally, revealing a development effect parameter influence principle through the fitted mode, understanding the bubble oil phenomenon, predicating the productivity of an oil field and formulating a development strategy to improve a heavy oil reservoir recovery ratio with the bubble oil phenomenon.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Lithium manganese phosphate cathode material and preparation method thereof
ActiveCN102931405AImprove discharge capacityImprove cycle performanceCell electrodesPhosphorus compoundsElectrolyteElectrode material
The invention provides a lithium manganese phosphate cathode material which comprises carbon and lithium manganese phosphate with a molecular formula (I): LiMn1-xMxPO4 (I), wherein x is greater than or equal to 0 and less than or equal to 0.2, and M is selected from any one of Ti, Co, Fe, Mg, Al, Cr and Nb. The lithium manganese phosphate cathode material disclosed by the invention is of a hollow ball structure, and the hollow ball structure is made of sheet-like primary particles. In the lithium manganese phosphate cathode material, the diffusion path of lithium ions in lithium manganese phosphate particles is shortened by the sheet-like oriented growth of the primary particles, so that the diffusion velocity is increased. The hollow ball structure is more beneficial to immersion and storage of electrolyte and an electrode material, so that deintercalation and transmission processes of the lithium ions are more convenient and faster, and the discharging capacity and the cycling performance of the lithium manganese phosphate material are enhanced.
Owner:宁波富理电池材料科技有限公司
High-magnification thermoplastic polyurethane microporous foamed plate and production method thereof
InactiveCN106146875AImprove solubilityIncrease the speed of diffusionSolubilityThermoplastic polyurethane
The invention relates to a high-magnification thermoplastic polyurethane microporous foamed plate which is prepared from the following components in parts by weight: 70-100 parts of TPU (thermoplastic polyurethane) and 0-30 parts of polydimethylsiloxane. The high-magnification thermoplastic polyurethane microporous foamed plate has the advantages that, as a supercutical fluid has relative high solubility in the polydimethylsiloxane and the polydimethylsiloxane has relatively low interfacial tension, a little polydimethylsiloxane mixed in the TPU greatly accelerates the diffusion velocity of the supercutical fluid in the TPU; a diffusion equilibrium time of the supercutical fluid in the TPU is shortened; the volume of a die cavity is slightly more than that of a TPU plate; moreover, a die made of a breathable metal material is laid on a surface of a die, so that the supercutical fluid can synchronously diffuse to enter the TPU plate through the upper surface and the lower surface of the TPU plate; in comparison with that the supercutical fluid can diffuse to enter the TPU plate through the upper surface only, a diffusion distance is shortened; the diffusion equilibrium time is shortened; the production efficiency is improved; in addition, the invention also provides a production method of the high-magnification thermoplastic polyurethane microporous foamed plate.
Owner:ZHEJIANG XINHENGTAI ADVANCED MATERIAL
Method for manufacturing CVD silicon oxide capable of improving forming quality
InactiveCN101719469AReduce undercuttingQuality improvementSemiconductor/solid-state device manufacturingEtchingSilicon oxide
The invention provides a method for manufacturing CVD silicon oxide capable of improving forming quality. In the prior art, the CVD silicon oxide is not subjected to thermal treatment for compacting before photoetching and etching processes to cause peeling off of photoresist and serious undercut of the CVD silicon oxide due to small adherence force of the silicon oxide with the photoresist. The method comprises the following steps: firstly, growing the silicon oxide on a silicon substrate through a CVD process; secondly, performing thermal treatment on the silicon oxide to compact the silicon oxide; thirdly, coating the photoresist on the silicon oxide, and carrying out exposure and developing processes to form a graph of the silicon oxide on the photoresist; fourthly, carrying out wet etching process to form the silicon oxide; and finally, removing the photoresist. The method can improve the adherence force between the CVD silicon oxide and the photoreist, and reduce the diffusion velocity of etching fluid between interfaces, thereby reducing the etching velocity of the CVD silicon oxide surface, effectively reducing undercut, and effectively improving the forming quality.
Owner:GRACE SEMICON MFG CORP
Method for preparing lithium ion battery porous electrode based on 3D printing technology
InactiveCN104409727ALarge specific surface areaImprove ionic conductivityCell electrodesPrinting inkManganese oxide
The invention discloses a method for preparing a lithium ion battery porous electrode based on a 3D printing technology. Lithium iron phosphate and manganese oxide are used as raw materials to prepare printing ink; by a 3D printing technology, a miniature injection print head is adopted to prepare a cathode and anode interdigital structure by using lithium iron phosphate as a cathode material and manganese oxide as an anode material; under argon protection, heat treatment is carried out to obtain an interdigital lithium ion battery structure by using porous lithium iron phosphate as a cathode material and porous manganese oxide as an anode material; and the interdigital lithium ion battery structure is transferred to a glove box for packaging so as to finally obtain the cathode and anode interdigital lithium ion battery. The preparation method is novel, and the technology is simple, accurate and controllable. The prepared material has large specific surface area, and specific capacity and energy density of the battery are greatly raised in comparison with those of a previous planar lithium ion battery. In addition, diffusion velocity of the lithium ion battery is improved by the porous structure of the cathode and anode materials, and the lithium ion battery is endowed with high ionic and electronic conductivity.
Owner:FUZHOU UNIV
Ultrasonic wave rice immersion device and immersion method
InactiveCN103271423AIncrease the speed of diffusionAbsorb evenlyFood shapingDiaphragm pumpGranularity
The invention relates to a supersonic wave rice immersion device and an immersion method and belongs to the technical field of food production. The immersion device is composed of an immersion tank body, a supersonic wave conduction device, a material circulating pipe, a stirring motor and a stirring paddle. The stirring motor, the supersonic wave conduction device and the material circulating pipe are arranged on the top of the immersion tank body. The other end of the material circulating pipe is communicated with the bottom of the immersion tank body. A pneumatic diaphragm pump is arranged on the material circulating pipe. Rice is immersed with the action of the supersonic wave in the immersion device and is in a dynamic state of random movement in the ultrasonic field. The diffusion velocity of water inside the rice is raised by the supersonic wave, so the rice can absorb water rapidly and uniformly and the immersion time is shortened. The uniformity of water distribution of the rice after immersion is raised. The passing rate of rice powder with a granularity of 80-100 meshes after the rice being smashed is more than 96%. The problems of long immersion time in the traditional method for immersing rice and loss of nutrients into immersion water can be solved.
Owner:FUWA GROUP
Method for improving distribution uniformity of reinforced phase in silver metal oxide electric contact material
InactiveCN108950257AImprove uniformityIncrease the concentration of vacanciesElectricitySmelting process
The invention discloses a method for improving distribution uniformity of a reinforced phase in a silver metal oxide electric contact material. A reinforced phase element is prepared into powder, a powder spraying device sprays the reinforced phase element powder into a silver solution through inert gas, vacancy concentration of the reinforced phase element is improved, the relative motion velocity of the reinforced phase element and the silver solution is increased, melting and diffusion velocities of the reinforced phase element in the silver solution can be increased effectively, and distribution uniformity of the reinforced phase in the silver substrate in the silver metal oxide electric contact material is finally improved. The technology can be applied to the production process of all silver metal oxide electric contact materials adopting internal oxidation technology or atomization technology, compared with the traditional internal oxidation technology and atomization technology, the method can significantly shorten uniformization time of the silver alloy smelting process, the volatilization amount of the low-melting-point reinforced phase element in the smelting process isreduced, and environment protection treatment cost is lowered.
Owner:FUDA ALLOY MATERIALS
Amorphous anode active material, preparation method of electrode using same, secondary battery containing same, and hybrid capacitor
InactiveCN102598370AIncrease capacityImprove featuresElectrode manufacturing processesCell seperators/membranes/diaphragms/spacersPhosphateNiobium
Owner:SEOUL NAT UNIV R&DB FOUND
Plasma processing method and computer storage medium
InactiveUS20070059944A1Quality improvementHigh speedElectric discharge tubesSemiconductor/solid-state device manufacturingElectron temperatureMicrowave
According to the present invention, when a nitridation process by plasma generated by a microwave is applied to a substrate with an oxide film having been formed thereon to form an oxynitride film, the microwave is intermittently supplied. By the intermittent supply of the microwave, ion bombardment is reduced in accordance with a decrease in electron temperature, and a diffusion velocity of nitride species in the oxide film lowers, which as a result makes it possible to prevent nitrogen from concentrating in a substrate-side interface of an oxynitride film to increase the nitrogen concentration therein. Consequently, it is possible to improve quality of the oxynitride film, resulting in a reduced leakage current, an improved operating speed, and improved NBTI resistance.
Owner:TOKYO ELECTRON LTD
Method for improving diffusion uniformity of crystalline silicon solar cell
ActiveCN104319308AImprove uniformityImprove compactnessFinal product manufactureSemiconductor/solid-state device manufacturingSilicon dioxideCrystalline silicon
The invention discloses a method for improving the diffusion uniformity of a crystalline silicon solar cell. Silicon dioxide with thickness from 1 nm to 20 nm grows on a texturing surface of a silicon wafer after texturing through an actinic ozone generation device. The thickness of the silicon dioxide is greater than the thickness of silicon dioxide formed at a pre-oxidation step of the diffusion technology. The silicon dioxide is good in uniformity and compactness. In the subsequent diffusion process, the diffusion velocity of phosphorus in the silicon dioxide is less than the diffusion velocity of the phosphorus in silicon. An oxide-film achieves a buffering effect for reaction, thereby facilitating the uniform diffusion of phosphorus into the silicon wafer, enabling the diffusion uniformity of the phosphorus to be improved, and improving the conversion efficiency of the solar cell to some extent.
Owner:上饶市弘业新能源有限公司
Device and method of measuring infiltration performance of porous metal material on the basis of digital image processing
InactiveCN105043935ASolve the problem of fuzzy and difficult positioningAccurately obtain wettabilitySurface/boundary effectPorous mediumMetallic materials
The invention discloses a device and a method of measuring an infiltration performance of a porous metal material on the basis of digital image processing. In the invention, a diffusion process of a drop on the porous metal material by a super depth microscope is recorded, and then the monitored record is processed to quantitatively obtain drop diffusion edge and diffusion speed. When the drop is diffused on the porous metal material, the image pixels of a diffusion zone image is changed through comparison with a background image, so that the drop diffusion process and the drop diffusion zone edge are accurately obtained through the digital image processing and further drop diffusion diameter and drop diffusion rate are quantitatively calculated, thereby solving a problem that the drop diffusion zone edge is fuzzy and is difficult to position in a liquid dropping observation method. The device and the method are especially suitable for diffusion of a transparent liquid work medium and provide reliable measurement of testing and evaluating the infiltration performance of the porous metal material. The method also can be developed and used in the fields of tests of infiltration performances of other porous medium materials.
Owner:SOUTH CHINA UNIV OF TECH
Device and method for measuring diffusion velocity of electronic wave packet
The invention discloses a device and a method for measuring the diffusion velocity of an electronic wave packet and aims at measuring a higher harmonic spectrum, screening the relationship between the elliptic polarization independence for exciting the wavelength of laser generated by the high harmonic spectrum and the wavelength of the laser and calculating the speed of the electronic wave packet and the sizes of the electric wave packets corresponding to different laser wavelengths according to the relationship between the sensitivity to the laser elliptic polarization degree and the electronic wave packet kinetic process. The measuring device and the measuring method have the characteristics of simpleness and effectiveness and important significance on understanding the evolution of the electronic wave packets in the strong-field physics and the electronic micro kinetics.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Plasma processing method and computer storage medium
InactiveUS7723241B2Quality improvementReduce harmElectric discharge tubesSemiconductor/solid-state device manufacturingElectron temperatureMicrowave
According to the present invention, when a nitridation process by plasma generated by a microwave is applied to a substrate with an oxide film having been formed thereon to form an oxynitride film, the microwave is intermittently supplied. By the intermittent supply of the microwave, ion bombardment is reduced in accordance with a decrease in electron temperature, and a diffusion velocity of nitride species in the oxide film lowers, which as a result makes it possible to prevent nitrogen from concentrating in a substrate-side interface of an oxynitride film to increase the nitrogen concentration therein. Consequently, it is possible to improve quality of the oxynitride film, resulting in a reduced leakage current, an improved operating speed, and improved NBTI resistance.
Owner:TOKYO ELECTRON LTD
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