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32results about How to "Solve hard-to-get puzzles" patented technology
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Broadcast and television caption recognition based automatic training data generation and deep learning method
InactiveCN103679208ASolve hard-to-get puzzlesCaption recognition process is idealCharacter and pattern recognitionStudy methodsLearning methods
The invention discloses a broadcast and television caption recognition based automatic training data generation and deep learning method. The method includes the steps: S1, simulating broadcast and television caption data, and constructing a mass video character training set; S2, extracting statistic character features in the mass video character training set, and quantifying the simulated caption data; S3, using a deep neural network to train a caption recognition model, and capturing a topological structure of a caption text in broadcast video; S4, realizing individual character recognition and output of the caption text in the broadcast video according to the caption recognition model obtained by training. According to the method, by automatically constructing mass simulation training data, the problem that mass tagged data are difficult to acquire is effectively solved; by combination of a novel deep learning method and a conventional character recognition technique, the topological structure of the caption text in the broadcast video is captured accurately, so that the problem that an existing character recognition technique is unsuitable for recognizing broadcast and television caption texts is solved.
Owner:北京中科模识科技有限公司
Railway fastener system damage detection method based on convolutional neural network
ActiveCN110175434ASolve hard-to-get puzzlesNo manual designGeometric CADDesign optimisation/simulationData setVibration acceleration
The invention discloses a railway fastener system damage detection method based on a convolutional neural network. Based on a train-rail coupling dynamics calculation and analysis model, spring stiffness reduction is utilized to simulate fastener damage, and simulation calculation is carried out to obtain vibration acceleration responses of the steel rail under different irregularity excitations,different damage positions and different damage degrees so as to construct a big data set. A one-dimensional convolutional neural network is designed, the established network is trained by using the data set, and cross validation and parameter adjustment are carried out. The trained network is subjected to performance test on a test set, and the test result shows that the detection method has highdetection precision and robustness. Furthermore, a dynamic experiment of a key section of the target monitoring line is carried out, an actually measured big data set of system damage is constructed,and the big data set is used for carrying out transfer learning on a pre-trained one-dimensional convolutional neural network model.
Owner:SOUTHWEST JIAOTONG UNIV
Isothermal die forging forming die and method for rare earth magnesium alloy thin webbed supporting fork
ActiveCN105397010AQuality improvementExtended service lifeForging/hammering/pressing machinesEngine componentsRare earthMagnesium alloy
The invention relates to a forming die and method for magnesium alloy thin webbed supporting fork forgings, in particular to an isothermal die forging forming die and method for a rare earth magnesium alloy thin webbed supporting fork. The problems that rare earth magnesium alloy thin webbed supporting fork forgings are prepared through conventional forging, blank manufacturing and forming are hard, forming defects are prone to occurring, the structure performance of the magnesium alloy forgings is hard to control, and the performance is low are solved. The forming method comprises the main steps that 1, blank manufacturing is carried out; 2, forging forming is carried out; 3, cooling is carried out; 4, primary acid pickling is carried out; 5, damage repairing is carried out; 6, final forging is carried out; 7, secondary acid pickling is carried out, wherein a magnesium alloy forging obtained in the sixth step is subjected to acid pickling, graphite on the surface is cleaned away, and a formed forging with the treated surface is obtained; and 8, the formed forging with the treated surface obtained in the seventh step is put into an aging oven to be subjected to aging treatment, and the finished rare earth magnesium alloy thin webbed supporting fork is manufactured. The forming die and method are used for preparing of the magnesium alloy thin webbed supporting fork.
Owner:HARBIN INST OF TECH
New method for obtaining ornamental arrowroot tissue culture sterile system
InactiveCN101390494ASolve hard-to-get puzzlesShorten the timeCultivating equipmentsHorticulture methodsExpanded clay aggregateFungal endophyte
Disclosed is a new method for obtaining ornamental arrowroot tissue culture germfree systems, which is an improved method for obtaining the germfree systems through the secondary transition planting of tissue culture female parent plant and the comprehensive sterilization of explants, by adding the sanitizers in the culture medium for co-cultivation; the plant tissue culture is made under sterile conditions; the process comprises the following steps: the female parent plant goes through secondary transition planting, namely, the female parent plant is cultivated in perlite or ceramic particles for 2-3 weeks and then removed into water for water culture to induce new leaves with less endophytes, and then the new leaves are taken as explants for tissue culture; the material goes through preliminary disinfection and low-temperature pretreatment; two disinfectant fungicides of different dosage are added into the induced culture medium to prepare the induced culture medium which can restrain bacteria; and the explants are treated through surface disinfection with an integrated approach. The method is unique, simple, practical and highly valued, which can obtain a large amount of aseptic systems in a short time, so as to save time, labor and expenses. The method enables the yield rate of the aseptic explants to reach 65-70%.
Owner:TIANJIN CITY AGRI BIO TECH RES CENT
Device for detecting inner wall defects of cylinder
InactiveCN111025619AIncrease the level of automationSolve hard-to-get puzzlesTelescopesProduction lineEngineering
The invention relates to a device for detecting defects of an inner wall of a cylinder. The device comprises a lens, a light source, an exploring tube and a camera assembly, the lens is internally provided with a channel for light to pass through, one end of the exploring tube is connected with one end of the lens, a light deflection assembly is arranged at the other end of the exploring tube, anopening is formed at the position, aligned with the light deflection assembly, of one side of the exploring tube, light outside the exploring tube can enter the exploring tube from the opening and pass through the light deflection assembly to be transmitted in the axis direction of the channel, the optical fiber is arranged in the probe tube, one end is connected with the light source, the other end is exposed from an opening edge of the probe tube, so the light emitted by the light source can irradiate along the optical fiber, the camera assembly is connected with the other end of the lens and located on the opposite side of the probe, and the shooting direction of the camera assembly is aligned with the channel axis direction. The device is advantaged in that a problem that images of aninner wall of a small-diameter and long-depth cylindrical workpiece are difficult to obtain is solved, the device is suitable for detecting the inner walls of transparent and non-transparent cylinders, and the automation level of a production line is improved.
Owner:SUZHOU LINGHOU ROBOT
Method for measuring pH value of carbonated concrete pore solution
InactiveCN102095840ASolve hard-to-get puzzlesEasy to operateMaterial testing goodsCarbonationPowder suspension
The invention relates to a method for measuring a pH value of carbonated concrete pore solution, belonging to the technical field of civil engineering materials. The method for measuring the pH value of the carbonated concrete pore solution provided by the invention comprises the following steps of: producing thin concrete test pieces, accelerating carbonation, filter pressing the concrete pore solution, preparing suspending liquid by concrete powder and the like. The pH value of the concrete pore solution is calculated by measuring the pH value of the concrete pore solution in different carbonation degrees and the pH value of the carbonated concrete powder suspending liquid, establishing the relationship between the pH value pH value of the concrete pore solution in different carbonationdegrees and the pH value of the suspending liquid, and measuring the pH value of the concrete suspending liquid. The method for measuring the pH value of the carbonated concrete pore solution provided by the invention is simple in equipment, low in cost, excellent in effect and the like; and the method is suitable for durability test research work such as concrete carbonation, pH measurement and the like.
Owner:HOHAI UNIV
Method for preparing hydrogen peroxide by using naphtha cracking tail gas
InactiveCN101298320AAvoid wastingReduce pollutionPeroxides/peroxyhydrates/peroxyacids/superoxides/ozonidesHydrogen cyanide preparation/purification/separationHydrogenNaphtha
The invention discloses a method for producing hydrogen peroxide with the naphtha cracking off-gas, which includes the following steps: 1.Light oil and liquid ammonia gasified are fed into a blender according to the weight ratio of 1:3-3.3, then the mixture is fed into a cracking furnace containing refinery coke catalyzer for scission reaction; 2. The deamination of the cracking outcome is carried out and then the the cracking outcome is absorbed by cold water and divided into liquid phase and gas phase, wherein, the liquid phase is resolved into finished product of hydrocyanic acid, the gas phase will be treated in the next step; 3. The gas phase generated in the step 2 is treated by alkaline washing and purified by membrane separation to collect the hydrogen gas; 4. The hydrogen gas collected in the step 3 is fed into a hydrogen peroxide production device as the hydrogen source, then the hydrogen peroxide can be obtained after the hydrogenation, oxygenation, extraction, purification and concentration. The invention can avoid waste of resources, reduce air pollution and can reduce the manufacturing cost of the product at the same time.
Owner:河北志诚化工集团有限公司
Dual generative adversarial network for motion blur restoration and operation method thereof
PendingCN111833267ASolve hard-to-get puzzlesImprove generalization abilityImage enhancementImage analysisGenerative adversarial networkFuzzy graph
The invention provides a dual generative adversarial network for motion blur restoration. The method comprises a data set clear domain, a data set fuzzy domain, a coupled first generative adversarialnetwork and a coupled second generative adversarial network. The first generative adversarial network comprises an original generator GA and a corresponding original discriminator DA, and the second generative adversarial network comprises a dual generator GB and a corresponding dual discriminator DB. According to the method, the problem that a deblurred data set is difficult to obtain is solved,only enough blurred images and clear images need to be obtained, two identical generative adversarial networks are used for forming a dual adversarial network, and training on a non-resultant data setcan be achieved.
Owner:HANGZHOU DIANZI UNIV
Method for screening anti-black rot mutant plants with cabbage free microspores
InactiveCN105766648AEasy accessImprove breeding efficiencyPlant tissue cultureHorticulture methodsPloidyBud
The invention discloses a method for screening anti-black rot mutant plants with cabbage free microspores. The method comprises the following steps: (1) separating and purifying black rot pathogenic bacteria; (2) roughly extracting toxin of black rot pathogenic bacteria; (3) dissociating and purifying microspores; (4) inducing a disease-resistant mutation embryoid; (5) differentiating adventitious buds of a disease-resistant mutant by the embryoid; and (6) performing rooting culture on adventitious buds. According to the invention, the disease-resistant mutant raw material is firstly taken from a haploid cell or a double haploid cell, extensive variation types can be generated, and the abundant hereditary basis can be supplied for disease-resistant selection; a mutant always happens at cell level and is applied to a microspore mutant for easily selecting a recessive gene and polygene homozygous dominance mutant; the mutant can be doubled through ploidy, so as to quickly acquire a homozygous disease-resistant material; the black rot pathogenic bacteria rough toxin is taken as a selective agent and is greatly beneficial to the promotion of gene aberration rate and the expansion of variation spectrum.
Owner:NORTHWEST A & F UNIV
Vibration acceleration sensor signal conditioning device for mine
InactiveCN103344320ASolve hard-to-get puzzlesImprove automationSubsonic/sonic/ultrasonic wave measurementUsing electrical meansSignal conditioning circuitsVibration acceleration
The invention relates to a vibration acceleration sensor signal conditioning device for a mine. The device comprises an acceleration sensor and a signal conditioning device. The acceleration sensor comprises a vibration acceleration sensor, a fixing device and a mine cable. The signal conditioning device comprises a signal input port, a signal conditioning circuit board, a power supply module, a device shell body and a signal output port. The signal conditioning circuit board comprises a sensor excitation circuit, a decoupling circuit, a filter circuit, a primary integrating circuit, an amplifying circuit, a secondary integrating circuit and an amplifying circuit. During vibration signal collecting in the mine, the sensor is fixed to a measured point through the fixing device. After decoupling, filtering and signal conversion of signals are carried out through the signal conditioning device, a vibration acceleration signal, a speed signal and a displacement signal are output from the signal output port. A user can connect the vibration acceleration sensor signal conditioning device with a signal collecting device according to needs. Different vibration signals can be obtained through the same sensor, so that obtaining of the vibration acceleration signal, the speed signal and the displacement signal is more convenient.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Chemical synthetic method of 8-furan-8-oxomethyl caprylate
ActiveCN105646403ASolve hard-to-get puzzlesThe synthetic route is simpleOrganic chemistryFuranChemical synthesis
The invention relates to a chemical synthetic method of 8-furan-8-oxomethyl caprylate. The method comprises the following steps of adding octanedioic acid and sulfoxide chloride into a reaction bulb, agitating an obtained mixture at a room temperature until a reaction is complete, and distilling to remove the sulfoxide chloride under normal pressure; afterwards, adding a solvent and a catalyst into the reaction bulb to carry out another reaction, dropwise adding methanol into the reaction bulb for quenching, decompressing the reaction bulb and distilling to remove the solvent, dissolving a target product by using an extracting solution to obtain a solution, and distilling the solution under reduced pressure to obtain a yellowish oily 8-furan-8-oxomethyl caprylate pure product. According to the chemical synthetic method of the 8-furan-8-oxomethyl caprylate, a synthetic strategy of a one-pot method is adopted; by proceeding from the low-cost octanedioic acid, the octanedioyl chloride is prepared with a high yield; afterwards, the octanedioyl chloride and furan are subjected to a regioselectivity Friedel-Crafts acylation reaction; finally, acyl chloride at the other end is quenched by using the methanol to directly generate methyl ester to obtain the product; by using the method, the synthetic route of the target product is simplified; the reaction time is greatly shortened; the synthetic total yield is improved; therefore, the production cost is decreased; the chemical synthetic method has the advantages of being low in cost, higher in yield, simple to operate and suitable for industrial production, and the like.
Owner:ZHEJIANG UNIV OF TECH
Tumorized human umbilical vein endothelial cell vaccine and its application in anticancer
ActiveCN108379566BSolve hard-to-get puzzlesImprove migration abilityCancer antigen ingredientsAntineoplastic agentsActive immunizationTumor vessel
Owner:ZHENGZHOU UNIV
Strain theoretical value obtaining method and device based on finite element model
ActiveCN111177848ASolve hard-to-get puzzlesImplementation steps are clearGeometric CADDesign optimisation/simulationElement modelStrain gauge
The invention provides a method and device for obtaining a strain theoretical value based on a finite element model. The method comprises the following steps: 1, determining a first finite element unit grid in the finite element model of a structural test part, and enabling the first finite element unit grid to be a grid pasted with a strain gauge; 2, in a structural test part finite element model, a 2 * 2 finite element grid corresponding to the first finite element unit grid is determined, and the 2 * 2 finite element grid comprises the first finite element unit grid; 3, obtaining respectivecentral point strain values and central point coordinates of the four finite element unit grids; and step 4, according to the respective central point strain values and central point coordinates of the four finite element unit grids, obtaining theoretical values corresponding to the strain gauges by adopting an interpolation algorithm. According to the method, the problem that theoretical calculation values of strain measurement points are not easy to obtain due to the fact that the strain measurement points of the test part are inconsistent with finite element grid calculation points is solved.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
A hyperspectral fusion computational imaging method and system
ActiveCN113421216BSolve hard-to-get puzzlesFew parametersImage enhancementImage analysisMultispectral imageNeural network nn
The invention discloses a hyperspectral fusion computing imaging method and system, the invention includes low-resolution hyperspectral image X lr Perform subspace representation to obtain low-rank spectral basis S and low-resolution subspace coefficient A lr ; The low-resolution subspace coefficient A lr After upsampling, it is stacked with the multispectral image Y and input to the pre-trained convolutional neural network to obtain the high-resolution subspace coefficient A; the high-resolution subspace coefficient A and the low-rank spectral basis S are fused to obtain the fused high-resolution hyperspectral Image X. The invention can effectively achieve high-precision quantitative establishment and solution of imaging models of hyperspectral and multispectral images, and generate training data from images to be fused through the established imaging models, solve the problem of insufficient training data, and integrate convolutional neural networks and sub- The combination of spatial representation models reduces network parameters and improves learning efficiency. It has the advantages of lightweight models, high computational efficiency, and high fusion accuracy.
Owner:HUNAN UNIV
A mobile robot variable pesticide application intelligent decision-making method and system
ActiveCN102968664BControl precisionMeet the needs of drug applicationFlow control using electric meansNeural learning methodsUltrasonic sensorAgricultural engineering
The invention relates to a mobile robot variable pesticide applying intelligent decision-making method and a system. The mobile robot variable pesticide applying intelligent decision-making system comprises a camera, an ultrasonic sensor, a flow sensor and a computer, the camera is used for sending an acquired greenhouse crop image to the computer through a universal serial bus (USB) interface, the ultrasonic sensor is used for measuring the distance of a sprayed target and sending the information of the distance to the computer, the flow sensor is used for measuring actual sprayed pesticide flow, the computer is connected with the camera, the ultrasonic sensor and the flow sensor, a fuzzy neural network decision-making device is configured in the computer, the fuzzy neural network decision-making device is used for obtaining target area, spraying distance and plant diseases and insect pests grade information, preset pesticide applying amount is calculated according to the obtained target area, spraying distance and plant diseases and insect pests grade information, a control amount is calculated and output according to the preset pesticide applying amount, the actual pesticide applying amount is obtained, the actual pesticide applying amount is compared with the preset pesticide applying amount, and the control amount is adjusted.
Owner:JIANGSU UNIV
A dynamic penetration plate anchor test device for ultra-gravity centrifuges
ActiveCN113026707BSolve hard-to-get puzzlesEasy to measureVessel designingIn situ soil foundationStructural engineeringPositioning system
The invention discloses a power penetration flat-plate anchor test device for a supergravity centrifuge. The test device consists of five parts: the test model box, the magnetic induction positioning system, the anchor release device, the load measurement device and the dynamic penetration plate anchor; there is a test foundation in the test model box, and a The slide rail of the model box is equipped with an anchor release device and a loading measurement device; the magnetic induction positioning system is installed on the anchor plate of the dynamic penetration flat plate and the test model box. The invention solves the problem that it is difficult to obtain the motion information of the anchor body due to the invisibility of the soil, and can accurately and effectively perform the power penetration plate anchor test of the supergravity centrifuge.
Owner:ZHEJIANG UNIV
Well drilling leakage pressure prediction method based on SVR algorithm
PendingCN114662390ASolve hard-to-get puzzlesDatabase management systemsRelational databasesData setAlgorithm
The invention belongs to the field of drilling leakage prediction and the field of artificial intelligence machine learning, and particularly relates to a drilling leakage pressure prediction method based on an SVR algorithm. The method comprises the steps of collecting data from a drilling well history database for preprocessing, creating a sample set and a test set, training an SVR model, introducing a relaxation factor, introducing a Lagrange function for unconstrained and dual derivation, selecting optimal parameters by using an SMO algorithm, and constructing a regression hyperplane to obtain a prediction function. And inputting the preprocessed data set into the trained SVR model to obtain a predicted value of the drilling leakage pressure. The method solves the problem that the current leakage pressure data has great significance for leakage stoppage and leakage prevention but cannot be directly obtained, has the advantages of reliable result, lower cost, convenience in operation and high generalizability, and has certain guiding significance and reference value in the field of leakage stoppage and leakage prevention.
Owner:SOUTHWEST PETROLEUM UNIV
A kind of chemical synthesis method of 8-furan-8-oxooctanoic acid methyl ester
ActiveCN105646403BSolve hard-to-get puzzlesThe synthetic route is simpleOrganic chemistryFuranChemical synthesis
The invention relates to a chemical synthetic method of 8-furan-8-oxomethyl caprylate. The method comprises the following steps of adding octanedioic acid and sulfoxide chloride into a reaction bulb, agitating an obtained mixture at a room temperature until a reaction is complete, and distilling to remove the sulfoxide chloride under normal pressure; afterwards, adding a solvent and a catalyst into the reaction bulb to carry out another reaction, dropwise adding methanol into the reaction bulb for quenching, decompressing the reaction bulb and distilling to remove the solvent, dissolving a target product by using an extracting solution to obtain a solution, and distilling the solution under reduced pressure to obtain a yellowish oily 8-furan-8-oxomethyl caprylate pure product. According to the chemical synthetic method of the 8-furan-8-oxomethyl caprylate, a synthetic strategy of a one-pot method is adopted; by proceeding from the low-cost octanedioic acid, the octanedioyl chloride is prepared with a high yield; afterwards, the octanedioyl chloride and furan are subjected to a regioselectivity Friedel-Crafts acylation reaction; finally, acyl chloride at the other end is quenched by using the methanol to directly generate methyl ester to obtain the product; by using the method, the synthetic route of the target product is simplified; the reaction time is greatly shortened; the synthetic total yield is improved; therefore, the production cost is decreased; the chemical synthetic method has the advantages of being low in cost, higher in yield, simple to operate and suitable for industrial production, and the like.
Owner:ZHEJIANG UNIV OF TECH
A New Method for Obtaining Aseptic System of Ornamental Arrowroot Tissue Culture
InactiveCN101390494BSolve hard-to-get puzzlesShorten the timeCultivating equipmentsPlant tissue cultureExpanded clay aggregateFungal endophyte
Disclosed is a new method for obtaining ornamental arrowroot tissue culture germfree systems, which is an improved method for obtaining the germfree systems through the secondary transition planting of tissue culture female parent plant and the comprehensive sterilization of explants, by adding the sanitizers in the culture medium for co-cultivation; the plant tissue culture is made under sterile conditions; the process comprises the following steps: the female parent plant goes through secondary transition planting, namely, the female parent plant is cultivated in perlite or ceramic particles for 2-3 weeks and then removed into water for water culture to induce new leaves with less endophytes, and then the new leaves are taken as explants for tissue culture; the material goes through preliminary disinfection and low-temperature pretreatment; two disinfectant fungicides of different dosage are added into the induced culture medium to prepare the induced culture medium which can restrain bacteria; and the explants are treated through surface disinfection with an integrated approach. The method is unique, simple, practical and highly valued, which can obtain a large amount of aseptic systems in a short time, so as to save time, labor and expenses. The method enables the yield rate of the aseptic explants to reach 65-70%.
Owner:TIANJIN CITY AGRI BIO TECH RES CENT
Cancerous human umbilical vein endothelial cell vaccine and application thereof in resisting cancers
ActiveCN108379566AEnhanced ability to migrate and invadeNot easy to loseCancer antigen ingredientsAntineoplastic agentsColon cancer tumorWilms tumour
The invention belongs to the field of technical methods for preventing tumors, and in particular relates to a tumor microenvironment induced cancerous human umbilical vein endothelial cell vaccine andan application thereof in resisting angiogenesis of colon carcinoma. The vaccine is prepared by the following steps: collecting supernatant of CT26 cells, inducing HUVEC cells via the CT26 cell supernatant, collecting the HUVEC cells, immobilizing glutaraldehyde and the like. According to the invention, tumor vessel endothelial cells function as a target in tumor immnuotherapy, belonging to active immunotherapy. The cancerous HUVEC vaccine is prepared through inducing by an in-vitro simulated tumor microenvironment. Based upon preliminary experimental results, it is indicated that the prepared cancerous HUVEC vaccine can cause a more effective action in inhibiting tumor angiogenesis, and subsequently, an effect of resisting colon carcinoma growth can be developed; therefore, a relativelygood application effect can be achieved; and meanwhile, a new possibility is also provided for the application of a treatment method based on resisting tumor angiogenesis.
Owner:ZHENGZHOU UNIV
Peziza repanda Pers. strain separation method
ActiveCN106834124ASolve hard-to-get puzzlesHigh purityMicroorganism based processesMicroorganism separationCallus formationBottle
The invention discloses a Peziza repanda Pers. strain separation method which is characterized by comprising the following steps: preparing a culture medium, respectively pouring the culture medium into culture bottles, capping, autoclaving, cooling, carrying out preculture in a culture chamber for 3 days, and carrying out material inoculation if no infectious microbe pollution occurs; flushing the material with tap water, sterilizing, absorbing water with sterile filter paper, cutting the required position, taking a 5mm block, inoculating the material to the obtained culture bottles, and culturing; putting the culture bottles in a culture chamber with the temperature of 25 DEG C or so, and culturing for 7-10 days to form the callus; and dicing the formed callus, inoculating to a fresh PDA (potato dextrose agar) culture medium, putting the PDA culture medium in a constant-temperature environment of 25 DEG C or so, and culturing, wherein the hyphae can grow out after 3-5 days, and can be full of the test tube after 15 days. The method solves the problem that the Peziza repanda Pers. strain is difficult to obtain, and obtains the high-purity Peziza repanda Pers. strain.
Owner:陆良爨乡绿圆菇业有限公司
X-ray grazing-incidence reflecting-mirror effective area calibration method
ActiveCN106568579ASolve hard-to-get puzzlesRealize effective area calibrationTesting optical propertiesSoft x rayX-ray
The invention discloses an X-ray grazing-incidence reflecting-mirror effective area calibration method. The method comprises the following steps of adjusting a diaphragm aperture and a distance between the diaphragm aperture and an X-ray tube, and starting a narrow-beam X-ray source; measuring an X-ray narrow beam intensity; aligning an X-ray grazing-incidence reflecting mirror and the narrow-beam X-ray source; using a two-dimensional translation platform to scan the X-ray grazing-incidence reflecting mirror; measuring a photon number C of a reflecting-mirror focal point; calculating an on-axis effective area of the X-ray grazing-incidence reflecting mirror; and rotating the X-ray grazing-incidence reflecting mirror, repeating the step4 to the step6 and then acquiring an off-axis effective area of the X-ray grazing-incidence reflecting mirror. In the invention, through the adjustable aperture diaphragm, a diameter of a X-ray beam is limited, a high-collimation X-ray calibration beam is realized, and a problem that a traditional high-collimation X-ray calibration beam is difficult to acquire is solved; and through arranging the two-dimensional translation platform, a technical effect that a narrow beam scans and calibrates an effective area of the grazing-incidence reflecting mirror is reached and a defect that calibration accuracy is not high in a traditional method is overcome.
Owner:BEIJING INST OF CONTROL ENG
Long-focus transmission-type quasi telecentric three-linear-array stereoscopic mapping optical system
ActiveCN102829767BSolve hard-to-get puzzlesEvenly distributed centroidsPicture taking arrangementsCoatingsTerrainLight beam
Owner:BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
A method for calibrating the effective area of an X-ray grazing incidence mirror
ActiveCN106568579BSolve hard-to-get puzzlesRealize effective area calibrationTesting optical propertiesLight beamX-ray
The invention discloses an X-ray grazing-incidence reflecting-mirror effective area calibration method. The method comprises the following steps of adjusting a diaphragm aperture and a distance between the diaphragm aperture and an X-ray tube, and starting a narrow-beam X-ray source; measuring an X-ray narrow beam intensity; aligning an X-ray grazing-incidence reflecting mirror and the narrow-beam X-ray source; using a two-dimensional translation platform to scan the X-ray grazing-incidence reflecting mirror; measuring a photon number C of a reflecting-mirror focal point; calculating an on-axis effective area of the X-ray grazing-incidence reflecting mirror; and rotating the X-ray grazing-incidence reflecting mirror, repeating the step4 to the step6 and then acquiring an off-axis effective area of the X-ray grazing-incidence reflecting mirror. In the invention, through the adjustable aperture diaphragm, a diameter of a X-ray beam is limited, a high-collimation X-ray calibration beam is realized, and a problem that a traditional high-collimation X-ray calibration beam is difficult to acquire is solved; and through arranging the two-dimensional translation platform, a technical effect that a narrow beam scans and calibrates an effective area of the grazing-incidence reflecting mirror is reached and a defect that calibration accuracy is not high in a traditional method is overcome.
Owner:BEIJING INST OF CONTROL ENG
A three-dimensional roughness description method of rock mass structural surface based on drilling camera technology
ActiveCN110360963BExhibit anisotropyAccurate descriptionUsing optical meansSurface roughnessEngineering
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
Method for measuring pH value of carbonated concrete pore solution
InactiveCN102095840BSolve hard-to-get puzzlesEasy to operateMaterial testing goodsFilter pressPh measurement
The invention relates to a method for measuring a pH value of carbonated concrete pore solution, belonging to the technical field of civil engineering materials. The method for measuring the pH value of the carbonated concrete pore solution provided by the invention comprises the following steps of: producing thin concrete test pieces, accelerating carbonation, filter pressing the concrete pore solution, preparing suspending liquid by concrete powder and the like. The pH value of the concrete pore solution is calculated by measuring the pH value of the concrete pore solution in different carbonation degrees and the pH value of the carbonated concrete powder suspending liquid, establishing the relationship between the pH value pH value of the concrete pore solution in different carbonationdegrees and the pH value of the suspending liquid, and measuring the pH value of the concrete suspending liquid. The method for measuring the pH value of the carbonated concrete pore solution provided by the invention is simple in equipment, low in cost, excellent in effect and the like; and the method is suitable for durability test research work such as concrete carbonation, pH measurement and the like.
Owner:HOHAI UNIV
A kind of method for isolating the strains of pleinosa
ActiveCN106834124BSolve hard-to-get puzzlesHigh purityMicroorganism based processesMicroorganism separationBiotechnologyEngineering
Owner:陆良爨乡绿圆菇业有限公司
A Sequence Image Simulation Method of Aerial Moving Target Based on Remote Sensing Platform
ActiveCN106875420BSolve hard-to-get puzzlesGuarantee authenticityImage analysisCurrent pointBackground image
Owner:BEIJING RACOBIT ELECTRONIC INFORMATION TECH CO LTD
A kind of isothermal die forging forming method of rare earth magnesium alloy thin belly fork
ActiveCN105397010BQuality improvementExtended service lifeForging/hammering/pressing machinesEngine componentsRare earthWork in process
The invention relates to a forming die and method for magnesium alloy thin webbed supporting fork forgings, in particular to an isothermal die forging forming die and method for a rare earth magnesium alloy thin webbed supporting fork. The problems that rare earth magnesium alloy thin webbed supporting fork forgings are prepared through conventional forging, blank manufacturing and forming are hard, forming defects are prone to occurring, the structure performance of the magnesium alloy forgings is hard to control, and the performance is low are solved. The forming method comprises the main steps that 1, blank manufacturing is carried out; 2, forging forming is carried out; 3, cooling is carried out; 4, primary acid pickling is carried out; 5, damage repairing is carried out; 6, final forging is carried out; 7, secondary acid pickling is carried out, wherein a magnesium alloy forging obtained in the sixth step is subjected to acid pickling, graphite on the surface is cleaned away, and a formed forging with the treated surface is obtained; and 8, the formed forging with the treated surface obtained in the seventh step is put into an aging oven to be subjected to aging treatment, and the finished rare earth magnesium alloy thin webbed supporting fork is manufactured. The forming die and method are used for preparing of the magnesium alloy thin webbed supporting fork.
Owner:HARBIN INST OF TECH
Model test device for long-term ground subsidence in high-density areas simulating complex vibration environments
The invention provides a model test device for simulating the long-term land subsidence in a highly-dense area under a complex vibration environment, and belongs to the technical field of urban underground engineering disaster prevention and reduction and land subsidence geological disasters. The model test device for simulating the long-term land subsidence in a highly-dense area under a complexvibration environment includes a model box, a stratum system, a tunnel system, a high-speed railway roadbed system, a vibration excitation system, a sensing system, a ground dense building group, a high-speed rotating system, and a karst cave system. The device can simulate the long-term land subsidence caused by the joint vibration of subways and high-speed railways in a dense building group area, can accurately simulate the long-term land subsidence under the effect of high-speed rotating centrifugal force in a complex environment, can quantitatively monitor the influence of the reinforcement of existing karst caves over and under an operating tunnel on the long-term land subsidence, and is low in experimental cost and reliable in data.
Owner:HEFEI WISDOM DRAGON MACHINERY DESIGN CO LTD
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