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Short-time traffic flow combined forecasting method
InactiveCN103730006AImprove forecast accuracyImprove stabilityDetection of traffic movementTraffic volumeLeast squares support vector machine
Aiming at the problem that an existing short-time traffic flow forecasting model is low in forecasting precision, the invention provides a short-time traffic flow forecasting method on the basis of grey system and least square support vector machine combined forecasting. The method, on the basis of advantages of a grey model, the least square vector machine (LSSVM) and other artificial intelligence methods, establishes a grey system and least square support vector machine combined forecasting model, and carries out residual correction and background value correction on the grey model as well as parameter optimization on the least square vector machine, so as to improve forecasting precision and generalization ability of the combined forecasting model; as forecasting time extends, the grey system and least square support vector machine combined forecasting model is relatively high in forecasting precision and is high in forecasting precision stability; and the method, through empirical analysis, achieves a good improvement effect.
Owner:JILIN UNIV
Guide blade water flow measuring clamp and guide blade water flow measuring method
ActiveCN103481219AReduce the number of clampingReduce mistakesMachine part testingWork holdersWater flowEngineering
The invention discloses a guide blade water flow measuring clamp and a guide blade water flow measuring method. Improvements on aspects of a sealing pad, a clamp passage structure and a water inlet waterway control are made. The sealing pad is changed into a mode that a blade is integrally contained and sealed and cavity passage docking is reserved, so that effective sealing is realized and the objective of multi-passage measuring is realized; four corresponding water incoming passages are designed for a clamp corresponding to the blade according to the position of a hole of the blade to be suitable for water incoming systems of four cavities of the blade. By the guide blade water flow measuring clamp and the guide blade water flow measuring method, the four cavities of the blade can be communicated with the four water incoming passages of a measuring system simultaneously only by clamping and mounting the blade for one time, and when measuring any cavity of the blade, water flow value of the cavity can be acquired only by opening a control valve. The guide blade water flow measuring method is simple and convenient to operate and stable in data, and the guide blade water flow measuring clamp is timesaving, laborsaving and good in sealability.
Owner:AECC AVIATION POWER CO LTD
Preparation process of mica-based pearlescent pigment with high weather resistance
ActiveCN103421357AGuaranteed high dispersionThe operation process is simplePigment treatment with organosilicon compoundsIron oxideWeather resistance
The invention relates to a preparation process of a mica-based pearlescent pigment with high weather resistance. The preparation process comprises the following steps: using metal oxide such as titanium dioxide and ferric oxide to clad the surface of mica with a certain grain size distribution to obtain a base material in a certain series of the pearlescent pigment, using photostable substances such as SiO2, Al2O3 and CeO2 to cover the surface of the base material, performing organic modification on the surface of the pigment by using a silane coupling agent KH570, and then obtaining the mica-based pearlescent pigment with the high weather resistance after suction filtration, washing and drying. The preparation process of the mica-based pearlescent pigment is reasonable in design, simple in operation, low in equipment cost, low in energy consumption, and suitable for large-scale production; the prepared pearlescent pigment is good in color and gloss, and suitable for occasions such as automotive, marine and outdoor decoration which have high weather resistance requirements.
Owner:杭州弗沃德精细化工有限公司
Method for coating metallic surfaces with a mixture containing at least two silanes
InactiveCN1777700APromote wettingUniform coatingEfficient propulsion technologiesAnti-corrosive paintsOrganic filmChemical reaction
Pre-coating of a metal surface prior to further coating or other treatment uses an aqueous composition wholly or mainly free of chromium (VI) compounds and is such that (a) the composition contains (i) an at least partially hydrolyzable silane and (ii) a metal chelate; and (b) the cleaned, etched or pretreated metal is contacted with the composition and the formed film is dried (and optionally hardened) to a thickness of 0.01-10 mu . Independent claims are also included for (1) the process in which the aqueous composition also contains (iii) an organic film-former comprising a water-soluble or -dispersible (co)polymer of acid number 3-250 and (iv) a long-chain alcohol film-forming aid.; and (2) compositions containing (i) and (ii) at 0.1-10 : 1 ratio and optionally also (iii) and (iv) .
Owner:CHEMETALLGMBH
Light-cured adhesive resin used for dental restoration, and preparation method thereof
InactiveCN106691874AThe improvement effect is obviousEasy to prepareImpression capsDentistry preparationsChemical structureGlycidyl methacrylate
The invention discloses a light-cured adhesive resin used for dental restoration, and a preparation method thereof. The light-cured adhesive resin used for dental restoration is invented based on enlightenment from marine mussel adhesion behavior. Oral moist application environment and bonding requirements on multi-material dental restoration materials are taken into consideration, derivative dopamine (DA) of the main chemical structure dopa of mussel adhesive proteins is introduced into an acrylic resin adhesive, and a novel adhesive functional additive dopamine glycidyl methacrylate (DA-GMA) is obtained via synthesis, and functional molecules with light-curable carbon-carbon double bonds and super high adhesive performance pyrocatechol groups are obtained. The functional molecules are added into an oral adhesive formula at a certain ratio so as to obtain the light-cured adhesive resin which possesses excellent adhesive properties and is used for dental restoration.
Owner:BEIJING UNIV OF CHEM TECH +1
Drought-resisting and water-saving irrigation method for dry-hot valley slope garden
InactiveCN101828504AImprove water retentionImprove water storage capacityWatering devicesCultivating equipmentsWater savingFruit tree
The invention relates to a drought-resisting and water-saving irrigation method for a dry-hot valley slope garden, belonging to the technical field of water-saving agriculture irrigation. The method comprises the step of: ditching along the row direction of the fruit trees in the garden, wherein the lengths of the ditches are the same with the lengths of each row of fruit trees, the depth of the ditches is 45-55 cm, the width of the ditches is 30-40cm, the ditches are parallel to the row direction of the fruit trees, the vertical distance between the ditches and the root parts of the trunks of the fruit trees is 50-60cm, membranes are arranged at two ends of the ditches for stopflow, straw bundles or cornstalk bundles are placed in the ditches, and the bundles are arranged 2-3cm higher than the ditch surface; measuring the water content in plough layer soil, wherein water is irrigated in the ditches when the water content of the plough layer soil is less than 30 percent, and water in the ditches permeates into the soil at the fruit tree roots to enable the water content of the plough layer soil to reach 50-60 percent; and laying a layer of straw or cornstalk on the moisture sides of the fruit trees, wherein the laying thickness is 2-5cm. The method has simple structure, simple and convenient operation, low cost, easily-obtained materials and strong adaptability and increases irrigation use ratio by 2.97 times compared with the traditional flooding.
Owner:INST OF QUALITY STANDARD & DETECTION TECH YUNNAN ACAD OF AGRI SCI
Styrene-acrylic emulsion for canvas paint use and its preparation method
The invention provides a styrene-acrylic emulsion for canvas paint use and its preparation method. The styrene-acrylic emulsion comprises 45-55% of water, 40-48% of polymeric monomer monomers, 0.2-2% of a functional cross-linking agent, 2-10% of emulsifiers, 0.3-1% of initiators, and 1-6% of a plasticizer. Specifically, the styrene-acrylic emulsion is obtained through the steps of: at a temperature of 75-85DEG C, conducting polymerization to styrene and a (meth) acrylic monomer as well as a (meth) acrylate monomer, and subjecting a styrene-acrylic acid-acrylate copolymer to partial cross-linking. The copolymer has a hydrophilic carboxyl group and has a main molecular structure in linear distribution. The styrene-acrylic emulsion of the invention is mainly used as an adhesive for canvas paint preparation, and has the characteristics of excellent elasticity, strong adhesive force, good tensile strength, strong anti-oil permeability, good endurance, and aging resistance, etc.
Owner:宁波高新区康大美术新材料有限公司
Time-lag-considering rotational-inertia compensation method suitable for wind turbine simulator
ActiveCN105673357AReproduce mechanical dynamic processSolve Oscillation ProblemsGeometric CADMachines/enginesTime lagInstability
The invention discloses an improved rotational-inertia compensation method considering a communication time lag and an acceleration time lag.The problem that when a present wind turbine simulator simulates a large-rotational-inertia wind turbine, instability and vibration occur is solved.The compensation method includes the steps that a wind turbine simulator is tested to determine the rotational inertia of the wind turbine simulator; a wind turbine model simulated by the wind turbine simulator is determined, and the rotational inertia of the wind turbine model is determined; the wind turbine simulator is tested to determine the step length of the communication time lag; a filter is added into a dynamic-torque compensation branch circuit of the wind turbine simulator according to the situation; the parameters of the digital filter are adjusted, and the wind turbine simulator stably runs.By means of the compensation method, the instability problem, caused by the communication time lag and the acceleration time lag, of the WTS is solved, the WTS can stably simulate the large-rotational-inertia wind turbine in the mode that the influence of the time lag is eliminated, and a user is assisted in conducting a control experiment of the wind turbine in the laboratory environment.
Owner:NANJING UNIV OF SCI & TECH
Glass panel frosting process
The invention provides a glass panel frosting process. Firstly, an acid-resistant protective ink layer is arranged on a Logo pattern on the front surface of a panel, and an acid / alkali-resistant protective ink layer is arranged on the back surface of the panel; then, chemical frosting treatment is carried out on other areas, which are not provided with the protective layer, on the front surface ofthe panel; then the acid-resistant protective ink layer on the Logo pattern is removed by using an alkaline deplating solution, and chemical polishing treatment is carried out on the front surface ofthe whole panel including the Logo pattern and the frosted region; and finally, the acid / alkali-resistant protective ink layer on the back surface of the panel is removed by using a strong acidic deplating solution. The frosting process provided by the invention is simple to operate, the ink layers with different properties are adopted to protect the back surface and the Logo pattern on the front surface of the panel, and the two kinds of protective ink are deplated step by step, so that the back surface of the panel has no scratch defect, meanwhile, there is no hand feel of scratch betweenthe frosted surface of the front surface of the panel and the polished surface of the Logo pattern, and the product quality is improved.
Owner:LENS TECH CHANGSHA
Cross-process callback execution method and device, equipment and storage medium
PendingCN111880866AImprove operational efficiencyRealize multiplexingProgram loading/initiatingExecution paradigmsSoftware engineeringEngineering
The invention discloses a cross-process callback execution method, device and equipment and a storage medium, and the method comprises the steps: responding to an interface call request, and recognizing a parameter which is correspondingly carried by a programmed annotation and represents a callback method; constructing a callback proxy object for a callback method based on the parameters, and generating callback feature information; initiating interface calling by calling an interface proxy object pre-constructed by a service process, and transmitting calling running information and callbackfeature information required by running of the interface proxy object to the service process, so the service process calls the callback proxy object through the callback feature information when running an instance object of the interface proxy object; executing callback; and responding to the interface calling request according to result data returned after the service process runs the instance object. According to the method and the device, the problem of effective and efficient calling of the callback method in cross-process communication is solved, the hardware operation efficiency duringcross-process callback is improved, and the related program development efficiency is improved.
Owner:广州方硅信息技术有限公司
Device and method for rapidly detecting nitrogen dioxide
ActiveCN105784691AResolution timeSolve usabilityChemiluminescene/bioluminescenceFast measurementNitrogen dioxide
The invention discloses a device and a method for rapidly detecting nitrogen dioxide. The device comprises a detector and a reactor, wherein the detector comprises a light-shielding housing, a photoelectric sensor module, a detector body and a light window; the light window is arranged between the light-shielding housing and the detector body; the photoelectric sensor module is arranged inside the light-shielding housing; an intake gas path and a vent gas path are formed in the detector body; the reactor comprises a bottom bracket and a reaction bed; the reaction bed is fixed on the upper surface of the bottom bracket; the reactor is fixed at the bottom of the detector body through the bottom bracket in a detachable manner; a reaction cavity is formed between the detector and the reactor; the intake gas path and the vent gas path both are communicated with the reaction cavity. The method detects with adoption of the device; the device and the method provided by the invention achieve rapid on-site measurement of nitrogen dioxide gas while ensuring high-sensitivity detection characteristics.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
Full-speed range position sensorless improvement control method of large-power hub motor
InactiveCN110176894AGuaranteed uptimeGood position recognition accuracyAC motor controlElectric motor controlControl systemPermanent magnet synchronous motor
The invention discloses a full-speed range position sensorless improvement control method of a large-power hub motor, and belongs to the field of a motor control method. The full-speed range positionsensorless improvement control method comprises the following steps of S1, building an MTPA and weak flux control-based hub motor vector control system; S2, building a position sensorless identification system of an MRAS combined with position sensorless; S3, designing a variable-weight weighing switching method; S4, building a given torque-based position sensorless permanent-magnet synchronous motor vector control system; S5, building a simulation model of the position sensorless permanent-magnet synchronous motor vector control system, and performing simulation verification; S6, improving and designing the switching method; S7, testing convergence of two switching algorithms during abrupt running, and performing algorithm simulation; and S8, verifying the identification performance of the improved algorithm within a full-speed range. By switching of two position identification algorithms, the working zone of the two algorithms is reduced on the basis of ensuring identification accuracy, and software and hardware resources are saved.
Owner:ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
Viscosity index improver, method for producing same, and oil composition
Owner:KURARAY CO LTD +1
Method for producing biological organic fertilizer by utilizing pruned branch and obsolete fruit tree of apple tree
PendingCN107793201AImprove performanceObvious growth advantageUrea compound fertilisersFertiliser treatment controlFruit treeMicroorganism
The invention discloses a method for producing biological organic fertilizer by utilizing a pruned branch and an obsolete fruit tree of an apple tree. The method particularly comprises the following steps of a step 1, pretreatment of raw materials: crushing the apple tree and the pruned branch thereof into sawdust units, screening a sawdust raw material with the length of 20mm to 60mm, carrying out high-temperature and high-pressure steam pretreatment on the sawdust raw material, and naturally drying for 4h to 6h after the treatment is completed; a step 2, preparing a fermentation microorganism mixed microbial inoculum; a step 3, carrying out composting fermentation on the raw material subjected to the pretreatment in the step 1; a step 4, repeatedly pile-turning fertilizer fermented in the step 3, and carrying out the composting fermentation again; a step 5, packaging and storing the fertilizer. The method is used for effectively returning agriculture-forestry waste to a field and solving the pollution problems caused to an environment and soil in the stacking and incineration processes of the pruned branch and the obsolete fruit tree of the apple tree.
Owner:SHAANXI UNIV OF SCI & TECH
Countercurrent extraction apparatus
A countercurrent extraction apparatus comprises an extraction tube; a propeller is disposed within the extraction tube; the propeller comprises a shaft and blades. The apparatus is characterized in that the blades are sheet-shaped, and the blades are arranged at interval on the surface of the shaft along the axial direction and in spiral arrangement. The sheet-shaped blades arranged spaced axially and spirally play the role of advancing the materials; the materials under the effect of such blades churn and spread out, so as to play a role in stirring; the materials churn from one side to the other side with the rotation of the propeller; although part of the materials rotate with the blades in place, the materials do not accumulate to one side at the same time because of spaced blades; continuous closely packed body can not be formed, and journal sticking effect can be avoided, so that blockage does not form in the extraction tube. Several tests prove that even if the total volume of the materials is greater than 80% of the total volume of the extraction tube, blockage does not appear, so that the efficiency of the extraction tube plays to the maximum, and the cost performance has been significantly improved.
Owner:JINING SINOBEST BIOLOGICAL MACHINERY
Fast closing method and device of task window of notebook computer
InactiveCN105700879AEasy to closeImprove experienceExecution for user interfacesInput/output processes for data processingGraphicsGraphical user interface
Owner:SAMSUNG ELECTRONICS SUZHOU COMP +1
Hydraulic hammer cylinder part
PendingCN110067277AStable supportFit closelySoil-shifting machines/dredgersFluid-pressure actuatorsAxial compressionPiston ring
The invention discloses a hydraulic hammer cylinder part. The hydraulic hammer cylinder part comprises a cylinder body, a piston, a piston ring, sealing parts and a reversing valve. According to the hydraulic hammer cylinder part, a left side piston ring cylindrical section of a leftmost sealing part groove of a piston ring inner hole is lengthened by L1, meanwhile, an oil feeding groove is additionally formed in the lengthened part, and a gap sealing section D is formed on the left side of the oil feeding groove, or one or two sealing part grooves are additionally formed in the left side of the oil feeding groove; and in the working process, high-pressure oil is always introduced into the gap sealing section D or the added sealing part grooves, so that the sealing parts in the sealing part grooves are simultaneously subjected to axial compression force and radial compression force under the action of the high-pressure oil, the sealing parts in the grooves are more tightly matched witha to-be-sealed surface, the great supporting effect is achieved on a postmedian section in the piston, so that the severe loss caused by scoring of the piston and the inner hole due to contact of thepiston and the inner hole of the cylinder is effectively avoided.
Owner:MAANSHAN KAMET HYDRAULIC MASCH MFG CO LTD
Method for in planta transformation of pruned apple tree branches into biochar organic fertilizers
InactiveCN107903134AImprove performanceReduce usageBio-organic fraction processingOrganic fertiliser preparationEvaporationAgricultural residue
The invention discloses a method for in planta transformation of pruned apple tree branches into biochar organic fertilizers. The method includes: step 1, raw material pretreatment, grinding apple trees and pruned branches thereof into wood dust units, selecting wood dust raw material in length of 20-60mm, subjecting to high-temperature high-pressure evaporation pretreatment, and naturally dryingafter treatment; step 2, preparing a fermentation microorganism mixed agent; step 3, preparing pruned apple tree branch biochar; step 4, subjecting pretreated raw materials in the step 1 to compostingfermentation; step 5, repeatedly turning fermented fertilizers in the step 4 to perform composting fermentation again; step 6, packaging the fertilizers to store. By adoption of the method, forestryand agricultural residues can be effectively returned to fields, and the problem of pollution to environment and soil in piling and incineration of the forestry and agricultural residues can be reduced.
Owner:SHAANXI UNIV OF SCI & TECH
GNSS (global navigation satellite system) pseudo-range multi-path eliminating method based on adaptive filtering
ActiveCN109507696AThe improvement effect is obviousImprove the correction effectSatellite radio beaconingICT adaptationFrequency spectrumSlide window
A GNSS (global navigation satellite system) pseudo-range multi-path eliminating method based on adaptive filtering includes: based on pseudo-range observed value and carrier observed value of a receiver, acquiring a sequence of code carrier deviation adjacent epoch differential components to obtain a segmented frequency spectrum, and performing sliding window averaging to obtain a continuous spectrum; performing a discrete and adaptive abnormal spectral peak band search to obtain an abnormal spectral peak band frequency-domain range; performing interpolation on the abnormal spectral range to obtain a segmented spectrum with no abnormal peak influence; performing Fourier inversion to obtain corrected code carrier deviation adjacent epoch differential components; performing differencing to obtain a CMCD modified differential sequence, integrating to obtain a CMC modified differential sequence with un-corrected initial phase, and using an initial phase and fluctuation range to perform initial phase modification to obtain a pseudo-range with periodic multi-path eliminated. The method herein is suitable for various observation environments; abnormal spectral peaks under different environments are extracted adaptively; a pseudo-range with no periodic multi-path influence is provided for a user; the error fluctuation influence of GNSS pseudo-ranges under non-ideal observation conditions is greatly decreased.
Owner:WUHAN UNIV
Narrow pulse suppression and electric energy quality improvement method for matrix converter
InactiveCN102545642AReduce switching lossesReduce the number of commutationsConversion without intermediate conversion to dcPower qualityHigh Powered Field
The invention discloses a narrow pulse suppression and electric energy quality improvement method for a matrix converter. The method is characterized in that: the matrix converter adopts double-voltage modulation; and when control signals of six switches for line voltage synthesis have narrow pulses in a certain switching period, six groups of new modulation functions for switch control are reconstructed and calculated according to the positions of the narrow pulses. The new functions are characterized in that: the new functions comprise instantaneous output current detection information; one of the six switches is kept in an off state; and the modulation functions simultaneously meet input current and output voltage modulation requirements. On the premise of no increase of the switching loss and the number of commutation times of the matrix converter, the number of the narrow pulses is effectively decreased, and the input and output waveform quality of the matrix converter is improved; and the method is particularly suitable for middle and high power places in which commutation time is long.
Owner:TIANJIN UNIV
Soil conditioner and use method thereof
InactiveCN104232097AAvoid secondary pollutionLow costAgriculture tools and machinesOther chemical processesDistilled waterSoil conditioner
The invention discloses a soil conditioner and a use method thereof. A preparation method of the soil conditioner comprises the following steps: (1) mixing the following raw materials in parts by mass: 200 parts of a 5%-10% palm seed essence solution, 250 parts of a bamboo essence solution and 50 parts of bamboo stem cells, adding water and fermenting for 7-8 days; (2) mixing 200 parts of a 5%-10% moran or intsia essence solution with 50 parts of moran or intsia stem cells, adding water and fermenting for 7-9 days; (3) adding 90 parts of a 5%-10% eichhornia crassipes or duckweed essence solution and 50 parts of eichhornia crassipes or duckweed stem cells, adding water and fermenting for 7-9 days; (4) adding 50 parts of a 5%-10% akala essence solution and 10 parts of akala stem cells, adding water and fermenting for 6-8 days; (5) adding 50 parts of prepared fermented milk into a mixture obtained in the step (4), adding a proper amount of distilled water and fermenting for 7 days to obtain the soil conditioner.
Owner:万物生(深圳)生物科技控股有限公司
Inner screen continuous type coil adopting fractional turn integer winding method and winding method thereof
PendingCN107785165AImprove fill rateLow costInductances/transformers/magnets manufactureCapacitanceFilling rate
The invention relates to an inner screen continuous type coil adopting a fractional turn integer winding method and a winding method thereof. The coil comprises operating wires and a shielding wire. The operating wires are two wires wound in parallel, the shielding wire is arranged between the interturn and wire space of the operating wires; at the wire segment changing position of the operating wires, one of the two operating wires wound in parallel winds one more circle and then moves upward to the next segment, and the other of the two operating wires wound in parallel directly moves upwardto the next segment, and accordingly an integer plus half turn structure is formed. The coil adopts two wires for winding, the number of turns of each segment is no longer limited to an integer turn,but to an integer plus half turn; filling rate of the coil is effectively improved, coil costs are reduced, longitudinal capacitance of the coil is effectively increased, turn insulation thickness ofthe shielding wire can be correspondingly smaller, and anti-short circuit capacity of the coil is enhanced while the filling rate is improved.
Owner:TBEA SHENYANG TRANSFORMER GRP CO LTD
Personal hotspot quick control method and apparatus
ActiveCN105930068AEasy to share networkAchieve sharingInput/output processes for data processingEngineeringSoftware download
The invention discloses a personal hotspot quick control method, which is used for quickly setting a personal hotspot of a multimedia device. The method involves a specified shortcut key and comprises the steps of identifying a frequency of pressing the specified shortcut key and setting a state of the personal hotspot according to the frequency of pressing the specified shortcut key. According to the method, the improved effect is very remarkable; a method for quickly setting the hotspot by one key is provided for a user; and network sharing is conveniently realized without the need for the user to enter software downloaded by the user layer by layer to perform setting.
Owner:SAMSUNG ELECTRONICS SUZHOU COMP +1
Pneumatic self sucking high-pressure oil ejector
InactiveCN1490550ARealize continuous oil supplyThe improvement effect is obviousEngine lubricationPistonCheck valve
A pneumatic self-sucking type high-pressure oil filler is composed of the oil storage unit consisting of oil storage cylinder and big piston, the oil filling unit consisting of plunger and check valve, the pneumatic unit communicated via interface to the compressed air source and connected via moving rod to plunger, and operation program controller. Its advantages are simple structure, low cost, and high effect to fill a great deal oil in short time.
Owner:程虎
Production method for selenium-enriched rice
InactiveCN108834792ANovel ideaSimple processSeed and root treatmentExcrement fertilisersAnimal fecesChitin formation
The invention relates to a production method for selenium-enriched rice. The production method comprises the following steps: preparing a selenium-enriched organic liquid fertilizer; improving a ricefield when the rice field overwinters; applying the selenium-enriched organic liquid fertilizer to rice from breeding, raising rice seedling and planting processes for management. In the embodiment process, the rice field is improved by means of a biofertilizer formed by combining crop straws, animal feces and chitin and the selenium-enriched organic liquid fertilizer composed of organic selenium,organic matters and chitin when the rice field overwinters. The soil of a used land is conditioned to be neutral with biological bacterial manure, the improving effect of the soil is obvious, and then the selenium-enriched organic liquid fertilizer is sprayed to the land, so that a selenium-free plot is changed to selenium-enriched soil within a short time, and therefore, the phenomenon that a natural high-selenium soil resource at present is extremely scanty is overcome effectively, and selenium-enriched agricultural products are developed quickly. Meanwhile, the prepared selenium-enriched organic liquid fertilizer is low in cost, high in selenium and organic matters and obvious in using effect.
Owner:田东县合乐源农作物农民专业合作社
Axial induced velocity calculation method of rotor system inducing flow field based on finite state
InactiveCN107688705AReduce mistakesQuick calculationDesign optimisation/simulationSpecial data processing applicationsHarmonicEllipse
The invention discloses an axial induced velocity calculation method of a rotor system inducing flow field based on a finite state, and relates to the axial induced velocity calculation method of therotor system inducing flow field. The invention aims to solve the problems that the existing calculation method is hard to pay both attentions to rapid calculation and rapid convergence at the same time. The process includes steps of firstly, acquiring coordinates of inner testing point sets of an upper space of a rotor plane under an ellipse coordinate system; secondly, setting a maximum harmonicparameter, solving corresponding matrix parameters according to the maximum harmonic parameter, and solving formulas as shown in the description according to corresponding coefficients and corresponding matrix parameters; thirdly, solving formulas as shown in the description; fourthly, solving the axial induced velocity of the induced flow field at the upper testing point of the rotor plane; fifthly, calculating the axial induced velocity of the induced flow field at the upper testing point of the rotor plane according to a reconstruction model; sixthly, calculating the axial induced velocityof the induced flow field at the upper testing point of the rotor plane according to optimized reconstruction model. The invention is applied to the field of induced velocity calculation of the rotorsystem.
Owner:HARBIN INST OF TECH
Agilawood essence for incense lines in fine filter sticks and application thereof
InactiveCN107616544AHazard reductionImprove fullnessTobacco smoke filtersEssential-oils/perfumesGlyceryl CaprateEngineering
The invention belongs to the technical field of fine cigarette filter stick production, and particularly relates to an agilawood essence for incense lines in fine filter sticks and application thereof. The agilawood essence is prepared from, 2.0-5.0% of agilawood oil, 2.0-5.0% of cedar oil, 2.0-5.0% of of cedrol, 0.5-1.0% of vetivert oil, 0.2-0.5% of linalool, 0.2-0.5% of vanillin, 0.2-0.5% of maltol and 82.5-92.9% of caprylic capric triglycerride. According to the agilawood essence for the incense lines in the fine cigarettes with special fragrance, in the combination of the improvement of the structures of the fine cigarette filter sticks, the smoking effect of fine cigarettes can be better improved, the improvement effect is obvious, the agilawood essence has a good practical value, enriches the types of the cigarette products and has better demonstration, popularization and application significance on the design, development, production and sales of the novel fine cigarettes.
Owner:CHINA TOBACCO HENAN IND
Integral ballast bed track structure for medium and low speed maglev transportation
ActiveCN103485244BImprove structural stabilityHigh ride comfortRailway tracksReinforced concreteEngineering
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD
GNSS occultation troposphere parameter correction method based on BP neural network
PendingCN113608239ACorrection errorQuality improvementDesign optimisation/simulationSatellite radio beaconingTroposphereHigh latitude
The invention relates to the field of atmospheric science research, in particular to a GNSS occultation troposphere parameter correction method based on a BP neural network, and the method comprises the steps: receiving troposphere top parameter product data obtained through the collection and inversion of a GNSS occultation detector; preprocessing the troposphere top parameter product data; and inputting the preprocessed data into a pre-established and trained correction model to obtain a corrected troposphere top height and a corrected troposphere top temperature, wherein the correction model adopts a BP neural network. According to the method, the BP neural network method is used for correcting the GNSS occultation troposphere top parameter product for the first time, the effect of improving errors in a high-latitude region is especially the most obvious, the used model is simple and efficient, calculation is economical, the errors of the parameters in the high-latitude region of the GNSS occultation troposphere top product can be effectively corrected, and the quality of the GNSS occultation troposphere top parameter product is improved.
Owner:NAT SPACE SCI CENT CAS
A rapid attribute reduction method for an incomplete data set
InactiveCN109828996AGood time complexityImprove stabilityDigital data information retrievalHealth-index calculationData setTime complexity
The invention discloses a rapid attribute reduction method for an incomplete data set. According to the rapid attribute reduction method, an IFSPA algorithm and an IFSPA-IVPR algorithm are adopted, attribute reduction can be completed more efficiently under the condition that the original characteristic attribute resolution capability of the incomplete data set is kept. The method is superior to the existing algorithm in the aspects of time complexity, stability and the like. Meanwhile, when the method is used for processing a large-scale data set, the improvement effect is very obvious.
Owner:XI AN JIAOTONG UNIV
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