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75results about How to "Optimize spatial distribution" patented technology
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Method for diffusely distributing micro-nano particle reinforced phase in composite material
A method for diffusely distributing a micro-nano particle reinforced phase in a composite material is characterized in that the method comprises the following steps: 1, ball-milling the micro-nano particle reinforced phase and matrix powder by adopting a mechanical ball-milling process in order to improve the wettability of the micro-nano particle enhanced wetting phase and a metal melt; 2, melting the metal melt, adding the molten metal melt to the ball-milled mixed powder, and processing the obtained melt by utilizing an ultrasonic field or an ultrasonic and electromagnetic compound fieldt; and 3, carrying out cooling molding or casting molding to prepared a micro-nano particle reinforced phase diffusely distributed metal matrix composite material. The method realizes the diffusive distribution of one or more of ceramic particles of SiC, WC, Al4C3, B4C, ZrB2, TiB, Al2O3 and AlN in metal materials of aluminum alloy, magnesium alloy and the like, and the high-quality metal matrix composite material with good compactness and uniform performances can be obtained through the method.
Owner:CHINA WEAPON SCI ACADEMY NINGBO BRANCH
Rolling bearing fault on-line detection and state assessment method
ActiveCN106323635AEasy to detectImplementation statusMachine bearings testingFeature vectorTime domain
A rolling bearing fault on-line detection and state assessment method is disclosed. The method comprises the following steps: twelve dimensional dimensionless parameters are extracted; the twelve dimensional dimensionless parameters comprise six dimensional time domain statistical parameters, three dimensional frequency domain statistical parameters and three dimensional dimensionless parameters in a small wave envelope spectrum; standardized reconstruction characteristic vectors can be obtained; whether a rolling bearing malfunctions is determined, and a state of the rolling bearing is assessed. Via the rolling bearing fault on-line detection and state assessment method, the twelve dimensional dimensionless parameters which can be used for effectively representing the state of the rolling bearing can be automatically extracted, the twelve dimensional dimensionless parameters are subjected to decorrelation and standardization operation, standardized reconstruction characteristic vectors that are distributed to form a hypersphere with an original point being a sphere center, and fault detection and state assessment of the rolling bearing can be realized via 2-norms of the standardized reconstruction characteristic vectors; difficult problems of long on line training time, low efficiency, and hard-to-obtain fault samples and the like of a rolling bearing state assessing model can be solved.
Owner:CHINA AERO POLYTECH ESTAB
Differential GNSS (Global Navigation Satellite System) and INS (Inertial Navigation System) adaptive tightly-coupled navigation method based on inertial measurement unit
ActiveCN108226980AImprove effectivenessGet rid of the influence of failure of choiceNavigation by speed/acceleration measurementsSatellite radio beaconingCanyonNavigation system
The invention relates to a differential GNSS (Global Navigation Satellite System) and INS (Inertial Navigation System) adaptive tightly-coupled navigation method based on an inertial measurement unit.Observation data of a Beidou (BD) navigation system and a GPS (Global Positioning System) navigation system are selected and combined to jointly serve as measurement information for combined filtering; the number of observation satellites is increased and further spatial distribution of the satellites is improved; in addition, data redundancy is improved, and the positioning precision is effectively improved; the number of the satellites which can be observed by the navigation system in complex environments such as urban canyons is added, so that the effectiveness of the navigation system iseffectively improved; by means of a BD / GPS information fusion technology, the dependency on a single system is reduced and the influence of GPS selection failure condition is eliminated.
Owner:BEIJING SATELLITE INFORMATION ENG RES INST
Vehicle rapid optimizing satellite selection positioning method based on GPS and Beidou double constellations
InactiveCN105785412AIncrease the number ofImprove fault toleranceSatellite radio beaconingSignal-to-noise ratio (imaging)Dual mode
The invention discloses a rapid optimizing satellite selection positioning method facing a vehicle. A global positioning system (Global Positioning System, GPS) and a Beidou navigation satellite system (BeiDou Navigation Satellite System, BDS) to realize accurate and real-time positioning of the vehicle in two modes. The method mainly comprises the steps of: completing a first stage of screening on the satellite through a carrier wave signal-to-noise ratio value; using an error model to correct a pseudo-range measuring value; receiving ephemeris data to obtain the position of the satellite; performing GPS and Beidou dual-mode pseudo-range positioning calculation to preliminarily solve the position of the vehicle; calculating an elevating angle and an azimuthal angle of the satellite; combined with a second stage of satellite selection algorithm to continue to carry out screening on the satellite; and performing the GPS and Beidou dual-mode pseudo-range positioning calculation again to finally determine the position of the vehicle at the current moment. According to the invention, compared with traditional single module vehicle navigation positioning based on GPS or Beidou, the positioning precision is higher and the system fault tolerance and reliability are better.
Owner:SOUTHEAST UNIV
Intercropping cultivation method of corn and rice beans
InactiveCN105191654AReduce evaporationRaise the ground temperatureFertilising methodsCultivating equipmentsBiotechnologyHectare
The invention discloses an intercropping cultivation method of corn and rice beans, and relates to a cultivation method of the corn and the rice beans. The invention aims to solve the problems that accumulated temperature of a high latitude area in northeast is insufficient, the growth period is short, the yield and plant benefit are low, and the farming enthusiasm of peasant is poor under an existing planting pattern. The intercropping cultivation method comprises the steps of 1, plowing in autumn, harrowing and careful soil preparation; 2, selection of improved varieties; 3, seed treatment; 4, timely sowing and reasonable close planting; 5, field layout of intercropping cultivation method of the corn and the rice beans; 6, scientific field management; 7, timely harvest. According to the intercropping cultivation method disclosed by the invention, 2000 to 3000kg of clean production rice beans per hectare is increased under the situation that the yield of the corn is not reduced, the yield of crops and the benefits in a unit area are significantly improved, and the advantages of increasing production and increasing efficiency are obvious. The intercropping cultivation method of the corn and the rice beans is applied to the field of crop planting.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
Blended self-assembly membrane based micro ampere immunity sensor and preparation thereof
InactiveCN1908665AReduce volumeHigh sensitivitySolid-state devicesMaterial electrochemical variablesInsulation layerAmpere
The micro-amp immunity sensor based on mixed self-assembly film comprises: a silicon substrate, a SiO2 and Si3N4 insulation layer, and the concentric circular gold film electrode, SU-8 photoresist ring sensitive film pond, a ring Pt-film counter electrode / reference electrode, a Su-8 photoresist ring reaction pond, and a bio-molecular sensitive film fixed on the electrode. With nano technology and mixed self-assembly film, this invention has well consistence, correlativity and compatibility with IC, and shows a new path for immunity analysis and detection.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI
Spatial resolution enhancement in hyperspectral imaging
ActiveUS9818193B2Enhanced informationOptimize spatial distributionTelevision system detailsImage enhancementSensor arrayImage resolution
In a hyperspectral imaging system and method, a pixilated imaging sensor array receives light reflected from, transmitted through, or scattered by a target scene. Images of the target scene are acquired at a number of times and these images are processed to generate hyperspectral data for each pixel of the imaging sensor array based on data for the pixel included in each of the acquired images. This processing can include spatially aligning two or more of the images that were spatially shifted with respect to each other when acquired based on at least one common image feature in the images.
Owner:HEALTHY IO LTD
High-yield and high-efficient cultivation method for water manure induction and root confinement of asparagus
InactiveCN105027945AReduced lateral growth rangeOptimize spatial distributionFertilising methodsPlant protectionFertilizerAsparagus
The invention provides a high-yield and high-efficient cultivation method for water manure induction and root confinement of asparagus. The method comprises the steps of seedling culture, weather enclosure building, preparation before planting, field planting, induction and root confinement cultivation, asparagus harvesting and disease control. The step of induction and root confinement cultivation comprises the substeps that a water conveying pipe is laid, wherein water manure is applied in a 30-60 cm deep and 60-80 cm wide soil layer; precise water management is performed, wherein the relative water content of soil of the 30 cm soil layer is maintained to be 55-65% in the asparagus harvesting period and maintained to be 65-75% in the vegetative period; formula fertilization is performed, wherein precise fertilization is performed according to the fertilizer requirement for various growth stages of the asparagus. By the adoption of the method, root systems of the asparagus are mainly distributed inside the 30-60 cm deep soil layer, and roots are prevented from being damaged; compared with the prior art, the depth of the soil layer where the root systems are mainly distributed is decreased by 15-20 cm, water is saved by 70-80%, fertilizer is saved by 50-55%, the consumption of a chemical agent is decreased by 60-70%, and the yield of the asparagus is increased by 25-35%.
Owner:SHANDONG WEIFANG ACADEMY OF AGRICULTURAL SCIENCES
Line search corner detection method
InactiveCN102339464AOptimize spatial distributionImage analysisCharacter and pattern recognitionAngular pointAlgorithm
The invention relates to a line search corner detection method which mainly comprises the steps that: a function for judging corner priority and a secondary filter are created; and the corner priority is applied to the estimation of the minimum distance of corners. The algorithm is an improvement to an existing line search corner detection method, can control the number of corners while maintaining the corners which are easily identified, so that the corners are uniformly distributed on an image, the follow-up image matching, image splicing and other operation are benefited, and a better effect is achieved in actual application.
Owner:SHANGHAI UNIV
Method for detecting traffic conflict between motor-assisted bicycle and automobile based on ST-MRF model
ActiveCN106530825AOptimize spatial distributionImprove the disadvantage of poor robustnessAnti-collision systemsTraffic conflictVideo image
The invention discloses a method for detecting traffic conflict between a motor-assisted bicycle and an automobile based on an ST-MRF model. The method includes the steps of a traffic camera taking three-dimensional video images, tracking single motor-assisted bicycle and automobile by using the ST-MRF model to obtain the traffic information of the single motor-assisted bicycle and automobile, converting the three-dimensional video images taken by the traffic camera into two-dimensional coordinate data through a coordinate conversion algorithm, predicting the parking points of the motor-assisted bicycle and the automobile in the next frame image, and establishing driver conflict determination criteria according to the distance between the parking points. A method for determining traffic between a red-light running motor-assisted bicycle and a normally driving automobile by tracking moving tracks of vehicles, and real-time and accurate traffic information for accident identification can be provided to a traffic management department.
Owner:JIANGSU HUAIAN TRAFFIC SURVEY & DESIGN INST
Jet aeration reactor used in active sludge method and its jet aeration process
InactiveCN1364731AOptimize spatial distributionReduce coalescingFlow mixersSustainable biological treatmentActivated sludgeProcess engineering
The present ivnention relates to aeration mode and equipment in waste water treatment. A new kind of jet aeration reactor and jet aeration process is provided. The present invention features that at the bottom of the reactor, a coaxial jet aerator with liquid driven jet, fixed cone, distributing plate and annular gap and a knocking plane in the upper part of the reactor are installed. The two phase gas-liquid flows knock oppositely to form gas-liquid circulation from output to inner, and this can improve the space distribution of bubbles, decrease bubbles aggregation, increase the service area of the jet aerator, maintain the homogeneous energy distribution rate in whole reactor and raise the mass transferring the energy transferring efficiency.
Owner:TSINGHUA UNIV +1
Magnetic fluid sieving device
InactiveCN102728463APromote circulationPass smoothlyHigh gradient magnetic separatorsMagnetic tension forceMagnetic poles
The invention relates to a magnetic fluid sieving device, which mainly comprises a fluid separation sieve and a magnetic loop. The device is characterized in that magnetic wires and nonmagnetic wires in the fluid separation sieve formed by multiple layers of screen meshes in a plurality of independent fluid separation cavities under magnetic poles divide a magnetic field space into several minimal spaces of high gradient magnetic potentials and an equal magnetic potential; magnetic particles in a fluid are enriched in the high gradient magnetic field spaces under the action of magnetic force when the fluid flows through the fluid separation sieve; and when the magnetic poles relatively move along the direction of the nonmagnetic wires, the magnetic particles are acted by the magnetic force of the magnetic poles, move with the magnetic poles along a direction nearly orthogonal to a fluid flow channel, and are separated out. The magnetic fluid sieving device of the invention has the advantages of realization of continuous and efficient separation of the magnetic particles from the fluid, low operation energy consumption, and simple maintenance, and can be used for environmental protection, magnetic metal recovery, and magnetic mineral sorting.
Owner:邹吉武
Display screen and display device
InactiveCN109429058AHigh resolutionThe position and light direction are easy toSteroscopic systemsOptical elementsSet distanceLight source
The invention discloses a display screen and a display device. The display screen comprises a plurality of pixel points arranged in an array, each pixel point is provided with at least two light emitting sources, the light emitting sources are fixed on a fixed plate and are arranged on a direction vertical to the plane of the display screen at a set distance interval, and each light emitting source is sued for presenting image data of the pixel points through the light emitted by the light emitting source. A rotation driving device is used for driving the light emitting source to rotate for anangle to adjust the direction of the emergent light. According to the display screen and the display device provided by the embodiment of the invention, the light emitting sources of the pixel pointsare driven by the rotation driving device to rotate, so that a viewer can obtain the viewing experience at any location in front of the screen.
Owner:SHANGHAI YUDE TECH CO LTD
Intravascular stent with medicament carrying groove
ActiveCN101940508AReduce depthLarge effective concentration spaceStentsMedical devicesInsertion stentPercent Diameter Stenosis
The invention provides an intravascular stent with a medicament carrying groove. The stent comprises a plurality of support rods and a plurality of connecting rods, wherein the support rods and the connecting rods are arranged longitudinally and are tubular; adjacent support rods are connected with each other through the connecting rod; each support rod is provided with the medicament carrying groove which comprises a top opening, and a bottom surface and left and right side faces which are formed by intersecting with the support rod; and at least one side face of the medicament carrying groove of the support rod is provided with a side face medicament release port. In the invention, a medicament space is partitioned into a V-shaped space along the outer side direction (one side tightly close to a vascular wall) of the support rod and a V-shaped space along the cross section direction (the cross section direction of a blood vessel) of the support rod and is closer to an effective medicament releasing space of a fully-coated structure, the medicament releasing period of the structure is longer than the medicament releasing period of the fully-coated structure and the restenosis of a lesion blood vessel is reduced without affecting endothelialization.
Owner:日照天一生物医疗科技有限公司
Staged combustion chamber head with entrainment pre-filming plate structure
ActiveCN113280367AOptimize spatial distributionImprove combustion effectContinuous combustion chamberCombustion chamberStaged combustion
The invention provides a staged combustion chamber head with an entrainment pre-film plate structure. The staged combustion chamber head comprises a pre-combustion stage and a main combustion stage arranged outside the pre-combustion stage in a sleeving mode. The main combustion stage comprises an inner ring and a sleeve arranged outside the inner ring in a sleeving mode. The inner ring is provided with a plurality of spray holes distributed in the circumferential direction. An annular air channel is formed between the inner ring and the sleeve. Axial rotational flow blades and an entrainment pre-filming plate are sequentially arranged in the air channel from front to back. The multiple axial rotational flow blades are arranged, and the multiple axial rotational flow blades are arranged in the circumferential direction. The entrainment pre-filming plate is annular and is formed by arranging a plurality of segmented arcs in the circumferential direction. The spray holes are arranged right opposite to the arc ridge of the entrainment pre-filming plate, and two segmented arcs are arranged between any two adjacent spray holes. The radial heights of the front end and the rear end of the arc ridge are both larger than the radius of the outer surface of the inner ring and smaller than the radius of the inner surface of the sleeve.
Owner:AERO ENGINE ACAD OF CHINA
Hydrophilic/hydrophobic composite multilayer membrane electrode and preparation method thereof
ActiveCN106229533BExpanded contact angle distribution gradientIncreased pressure gradientFuel cellsCapillary pressureWater layer
The invention discloses a hydrophilic / hydrophobic compound multilayer membrane electrode and a preparation method thereof. The membrane electrode comprises an anode catalyst layer, a proton exchange membrane, and a cathode catalyst layer, wherein the cathode catalyst layer comprises a three-layer composite structure with a hydrophilic gradient, the layer which is near the proton membrane is a hydrophilic modification layer, the layer which is near a gas diffusion layer is a hydrophobic modification layer, and the middle part between the two layers is a unmodified layer, so that the hydrophilic gradient is formed in the cathode catalyst layer. The hydrophilic layer has moisture retention effects for ionic polymers in the proton exchange membrane and the catalysis layer in a condition with low relative humidity, so that ionic conduction resistance of the membrane electrode is reduced. The hydrophobic layer reduces a capillary pressure gradient between the catalyst layer and the gas diffusion layer, and diffusion of water from the diffusion layer to the catalyst layer in a condition with high relative humidity is inhibited. The scheme is used for realizing the purpose for optimizing water distribution in catalyst layers.
Owner:上海唐锋能源科技有限公司
Continuous reaction device for synthesizing polyoxymethylene dimethyl ethers
InactiveUS20160185902A1Improve mixing efficiencySave energyOrganic chemistryOrganic compound preparationChemical industryReaction temperature
The present invention pertains to the technical field of energy resource chemical industry, and in particular relates to a continuous reaction device and process for synthesizing polyoxymethylene dimethyl ethers by using paraformaldehyde and methylal as feedstock or using trioxane and methylal as feedstock in the presence of an acidic catalyst. The continuous reaction device comprises multiple slurry bed stirred tank reactors connected in series or in combination of series connection and parallel connection, and also comprises an on-line solid-liquid separation device to perform separation of the reaction mixture from the catalyst. Each of the tank reactors is provided with an axial-flow stirring paddle having 2-6 blades per layer, to ensure sufficient mixing of the reactants with the catalyst. By using a distributed control pattern of reaction temperature and feedstock supplying to enhance the process and to optimize the operation, the reaction device of the present invention can effectively achieve large-scale continuous production of polyoxymethylene dimethyl ethers, and both the yield rates and the distribution of the reaction product are better than those of prior art.
Owner:DONGFANG HONGSHENG NEW ENERGY APPL TECH RES INST +1
Method for preparing methyl cellulose and lipid packaging film
InactiveCN105085955AImprove performanceOptimize spatial distributionFlexible coversWrappersMicrowaveMethyl cellulose
The invention relates to a method for preparing a methyl cellulose and lipid packaging film, and belongs to the technical field of food packaging. Methyl cellulose and a lipid are used as main film forming materials, and a plasticizing agent is used as an accessory material. The preparation method comprises the following steps: (1) weighing methyl cellulose, adding a hot ethanol water solution into the methyl cellulose, and adding the plasticizing agent and the lipid after the methyl cellulose is fully dissolved to form a mixed film liquid; (2) performing a synergistic processing of microwave and ultrasonic on the mixed film liquid, forming a film through tape casting, drying and taking out the film to obtain the methyl cellulose-based composite food packaging film. Compared with the prior art, the lipid-containing methyl cellulose film liquid is subjected to the synergistic processing of microwave and ultrasonic to prompt the crystallization of a lipid substance on the surface of a methyl cellulose substrate through a self-association effect, so that a dense lipid layer is formed and a double-layer structure is formed finally. The double-layer film prepared by the method is non-toxic, edible and biodegradable, can be formed by only one tape casting, is simple in film preparation process, meanwhile, has excellent mechanical and moisture-resistant properties, and can be used as a food inner package.
Owner:SHANGHAI JIAO TONG UNIV
Intravascular stent with medicament carrying groove
ActiveCN101940508BReduce depthLarge effective concentration spaceStentsMedical devicesInsertion stentPercent Diameter Stenosis
The invention provides an intravascular stent with a medicament carrying groove. The stent comprises a plurality of support rods and a plurality of connecting rods, wherein the support rods and the connecting rods are arranged longitudinally and are tubular; adjacent support rods are connected with each other through the connecting rod; each support rod is provided with the medicament carrying groove which comprises a top opening, and a bottom surface and left and right side faces which are formed by intersecting with the support rod; and at least one side face of the medicament carrying groove of the support rod is provided with a side face medicament release port. In the invention, a medicament space is partitioned into a V-shaped space along the outer side direction (one side tightly close to a vascular wall) of the support rod and a V-shaped space along the cross section direction (the cross section direction of a blood vessel) of the support rod and is closer to an effective medicament releasing space of a fully-coated structure, the medicament releasing period of the structure is longer than the medicament releasing period of the fully-coated structure and the restenosis of a lesion blood vessel is reduced without affecting endothelialization.
Owner:日照天一生物医疗科技有限公司
Heat storage type electric heating optimal configuration method considering power flow balance of power distribution network
PendingCN114462308ABest access locationGood rated capacityLighting and heating apparatusElectric heating systemThermodynamicsPower flow
The invention discloses a heat accumulating type electric heating optimal configuration method considering power flow balance of a power distribution network, which comprises the following steps of: calculating hourly heat load demand of the whole heating season according to historical air temperature and solar radiation data, and processing the uncertainty of the heat load demand by adopting a scene reduction method; establishing a heat accumulating type electric heating multi-target double-layer optimization configuration model; solving by adopting a multi-target particle swarm optimization algorithm to obtain a series of Pareto solution sets; the weight of each target value is determined through information entropy, and the schemes are sorted by using an approximate ideal solution sorting method to select an optimal compromise solution from the schemes; according to the method, unreasonable distribution of power flow in the line is improved, overlarge voltage offset is adjusted, the problem that the voltage is too low and even the voltage is out of limit due to access of the electric heating load is solved, it is guaranteed that the voltage quality meets the requirement, and a power distribution network can operate safely and stably.
Owner:CHINA THREE GORGES UNIV
Dynamic magnetic massage device
ActiveCN105125391AImprove comfortImprove effective utilizationVibration massageMagnetotherapy using variable magnetic fieldsHuman bodyPhysical medicine and rehabilitation
The invention relates to the technical field of magnetic health care equipment and in particular relates to a dynamic magnetic massage device. The device comprises an openable and foldable flatly laid outer packaging bag used for being laid on a massaged part of human bodies, wherein first inner hidden bags and a second inner hidden bag are arranged in the flatly laid outer packaging bag; knocking massage devices are arranged in the first inner hidden bags; and a control box electrically connected with the knocking massage devices and a gyromagnetic device electrically connected with the control box are arranged in the second inner hidden bag. The device has high stability, good magnetic health care effects, good massage effects and high use comfort level.
Owner:HEYE HEALTH TECH CO LTD
Repulsion mechanism for ultra-fast circuit breaker
ActiveCN110993387AImproved magnetic field distributionIncrease the magnetic field densitySwitch power arrangementsHigh-tension/heavy-dress switchesEngineeringEnergy storage
A repulsion mechanism for an ultra-fast circuit breaker, disclosed by the present invention, comprises a repulsion coil, a repulsion disc and a mechanism shaft. The repulsion coil comprises a chassis,an insulating framework, a coil winding, an iron core and a fixing screw, and the repulsion disc comprises a main disc piece, a repulsion disc framework and a fixing piece for riveting the main discpiece and the repulsion disc framework. Compared with the prior art, the repulsion mechanism is more compact in scheme overall design, the magnetic field distribution of the rapid repulsion mechanismis optimized, the utilization efficiency of the repulsion mechanism for electromagnetic energy is improved, and the requirement for energy storage of a driving loop is lowered, and therefore the sizeand the cost are reduced.
Owner:WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
Full-automatic immunoblotting instrument and detection method
PendingCN111856050AOptimize spatial distributionReduce volumeBiological testingAuto immuniteMechanical engineering
The invention relates to a full-automatic immunoblotting instrument and a detection method. The full-automatic immunoblotting instrument comprises a rack, wherein kits, a reagent filling device, reaction vessels with membrane strips, sample boxes, and a sample filling mechanism used for adding sample liquid in the sample box into the reaction vessel are arranged on the rack. A large disc and a small disc which are coaxial are rotationally arranged on the rack; the plurality of kits are arranged on the small disc along the circumferential direction of the small disc; the reagent filling deviceis positioned at the outer edge of the small disc; a plurality of reaction vessels and a plurality of sample boxes are arranged in the circumferential direction of the large disc; the sample boxes arearranged on the edge of the large disc; the reaction vessels are installed between the center of the large disc and the sample boxes, and the sample filling mechanism is arranged on a short-stroke rail and moves in a radial direction of the large disc. The space structure of the large disc and the small disc is reasonably and efficiently utilized, the whole instrument tends to be miniaturized, efficient and automatic, a disposable suction nozzle is clamped, and cross infection is avoided.
Owner:欧亚先锋生物技术投资(北京)有限责任公司
Lightweight fractal gradient gear
PendingCN111140639AImprove mechanical performanceGuaranteed fatigue strengthPortable liftingGearing elementsGear wheelManufacturing engineering
The invention discloses a lightweight fractal gradient gear. The lightweight fractal gradient gear comprises a gear body and is characterized by further comprising two plate bodies, wherein the platebodies are fixed to the two sides of the gear body; and the gear body is of a porous lightweight structure, wherein the porous lightweight structure at least is composed of a first-stage gradient holegroup, a second-stage gradient hole group and a third-stage gradient hole group which are constructed in a staggered mode. According to the lightweight fractal gradient gear, a honeycomb type multi-cell structure serves as a prototype, and gradient type, split type and multi-type design is carried out, so that the maximum lightweight of the gear is achieved, and manufacturing is convenient.
Owner:HUAQIAO UNIVERSITY
A Dispersion Distribution Method of Micro-nanoparticle Reinforced Phase in Composite Materials
Owner:CHINA WEAPON SCI ACADEMY NINGBO BRANCH
5G network slice resource scheduling method for power distribution network
PendingCN121940820Aspatially orientedReduce transmission delayNetwork traffic/resource managementResource poolPathPing
The invention relates to the technical field of information communication, and discloses a 5G network slice resource scheduling method for a power distribution network, and the method comprises the steps: firstly collecting the geographic coordinates and priority labels of a service request, carrying out the regional division of a service based on the coordinates, and determining the cluster center of each region; then combining the priorities and the areas to which the requests belong, carrying out hierarchical sorting on all the requests to generate a global scheduling sequence; for each request in the sequence, calculating a path distance to each network resource node according to the coordinate of the request and the cluster center, and selecting a shortest path node as a target resource node; and finally, allocating resource quotas from the resource pool of the target node in sequence. According to the 5G network slice resource scheduling method provided by the invention, the resource matching accuracy and locality are effectively improved, the service transmission delay is reduced, the network flow space distribution is optimized, and the more efficient and reliable bearing of the power distribution network service is realized.
Owner:SHANXI ELECTRIC POWER CO POWER COMM CENT
A composite deposition process and deposition device of magnetron arc ion plating
ActiveCN103540900BEmission reductionReduce in quantityVacuum evaporation coatingSputtering coatingIon depositionTransmission channel
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Kettle residue recovery process of methyl carbamate
PendingCN119504504Aefficient separationImprove recycling efficiencyUrea derivatives preparationCarbamic acid derivatives preparationMolecular sieveMethyl carbamate
The invention relates to a kettle residue recovery process of methyl carbamate, and belongs to the technical field of chemical engineering, the kettle residue recovery process of methyl carbamate comprises the following steps: adding the kettle residue of methyl carbamate into water, stirring for dissolving, adding chloroform, extracting, standing for layering, taking an oil phase dissolved with methyl carbamate at the lower layer, cooling to room temperature, filtering, washing, and drying to obtain the methyl carbamate. Drying to constant weight to obtain recycled methyl carbamate; and adjusting the pH value of an upper water phase composed of impurities such as urea, biuret and triuret to 7.5-8 by using a pH regulator, introducing into a sealed reaction tank filled with a modified mesoporous molecular sieve, adsorbing at normal temperature and normal pressure, filtering, and treating the filtrate at 60-80 DEG C to obtain the recycled and treated urea. The whole preparation process is simple and controllable, and the methyl carbamate and the urea in the kettle residues of the methyl carbamate are recycled.
Owner:ANHUI GUANGXIN AGROCHEM
Aluminum alloy powder for additive manufacturing and preparation method and application thereof
The invention discloses aluminum alloy powder for additive manufacturing and a preparation method and application of the aluminum alloy powder. A small amount of graphene powder, zirconium oxide powder and aluminum alloy powder are mixed, agglomeration of graphene can be prevented by mixing the zirconium oxide powder, the graphene can be subjected to interface reaction on a matrix to generate carbide, the carbide is uniformly dispersed in grain boundaries and grains to generate a pinning effect; the dislocation density is increased through Orowan strength, grains are refined through heterogeneous nucleation, and transfer of more loads from a matrix to graphene is promoted, so that a strengthening effect is achieved, spatial distribution of a double-phase reinforced phase is improved, interface bonding strength is improved, wettability of the reinforced phase and the matrix is improved, powder fluidity is improved, and the quality of the composite powder is improved; and meanwhile, by combining the high-temperature-resistant, wear-resistant and corrosion-resistant reinforcing phases of the graphene and the zirconium oxide powder, about 5% of volume expansion can be generated during conversion from a t phase (tetragonal phase) to an m phase (monoclinic phase), crack propagation in a matrix is hindered, and phase toughening is generated.
Owner:XI AN JIAOTONG UNIV
Digital display device
PendingCN108182887AIncrease display areaReduce extra spaceStatic indicating devicesIdentification meansLight guideDisplay device
A digital display device is provided with a digital display circuit with a display lamp and a light guiding device matched with the display lamp, wherein the digital display circuit is assembled on anexternal equipment circuit board; the light guiding device is fixedly arranged on the external equipment circuit board is arranged above the digital display circuit. The digital display device disclosed by the invention has the beneficial effects that the digital display circuit is directly integrated on the external equipment circuit board which requires to be additionally provided with digitaldisplay function equipment, and then the light guiding device is arranged on the external equipment circuit board, so that a digital display function which is the same as that of a nixie tube can be generated, and the cost and the installation time can be greatly reduced; the digital display device integrated on the external equipment circuit board is capable of simultaneously reducing the whole thickness and the occupied space of the external equipment circuit board, and space distribution of other electronic elements in the external equipment circuit board is convenient.
Owner:吴襄平