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58results about How to "Efficient analysis method" patented technology
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Vibration modeling and analyzing method of crack impeller structure of centrifugal compressor
ActiveCN103984813AImprove efficiencyLess freedomSpecial data processing applicationsElement modelSimulation
The invention discloses a vibration modeling and analyzing method of a crack impeller structure of a centrifugal compressor. The vibration modeling and analyzing method comprises the steps of firstly, providing a modeling method of a centrifugal impeller, obtaining a whole model by rotating and converting a finite element model of a section of the impeller, reducing the DOF (Degree of Freedom) of a system by adopting a hybrid interface modal synthesis method, and simulating a breath effect of a crack by defining a contact mode on a crack interface; secondly, providing a method for solving large-scale symmetrical sparse matrix-inverse matrix, and thus obviously reducing the memory space needed by calculation; finally, providing a method for carrying out statistical analysis on resonant frequency of the crack impeller structure, considering dissonant factors such as manufacturing error and state degradation which exist in an actual impeller, and obtaining statistical regularity of structure resonant frequency under a random dissonant mode. According to the vibration modeling and analyzing method disclosed by the invention, the calculating accuracy is ensured, obvious improvement effect of calculating efficiency is realized at the same time, and a high-efficiency analyzing method is provided for optimal design of the impeller and quantitative diagnosis of the crack.
Owner:XI AN JIAOTONG UNIV
Method for measuring main phenolic compounds in electronic cigarette liquid
InactiveCN103808832ARapid determinationSimple elution procedureComponent separationPhysical chemistryElectronic cigarette
The invention discloses a method for measuring main phenolic compounds in electronic cigarette liquid. The method comprises the steps of preparing a sample solution to be measured by an ultrasonic extracting method, preparing a mixed standard working solution with give concentration gradients, analyzing the solution by a high-efficient liquid-phase chromatography and a fluorescent detector, and quantizing by an external standard method. The result shows that the method is simple in preprocessing, simple to operate, short in analysis time, high in sensitivity, good in recovery rate and precision and suitable for measurement on the content of phenolic compounds in the electronic cigarette liquid.
Owner:CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
Method for determination of phytic acid content of cotton seed powder
InactiveCN106018337AAnalytical method is fastEfficient analysis methodComponent separationMaterial analysis by optical meansPretreatment methodIon chromatography
The invention discloses a method for determination of phytic acid content of cotton seed powder. The method comprises collecting different kinds of cottonseed samples planted in different regions, carrying out sample husking, grinding, sieving and moisture balance on the samples, collecting full spectrum data, pretreating the near infrared spectroscopy data through a plurality of pretreatment methods, accurately determining sample phytic acid content through high performance ion chromatography, constructing the optimal PLS model in a full spectrum range through a full cross-validated method, carrying out variable selection on the spectroscopic data, building multiple correction models through a multivariate calibration regression method, building a near infrared spectroscopy correction model and detecting phytic acid content of cotton seed powder through the model. The method utilizes a Buchi NIR Flex-N500 Fourier transform near infrared spectrometer to acquire a spectrogram of cotton seed powder, has a fast determination speed and high accuracy, is environmentally friendly, convenient and efficient and has an important meaning for cultivation of low-phytic acid cotton and promotion of cotton side product processing and utilization.
Owner:ZHEJIANG UNIV
Method for measuring carbonyl compound in electronic cigarette liquid
The invention discloses a method for measuring a carbonyl compound in electronic cigarette liquid. The method comprises the following steps: preparing carbonyl compound derivative solutions at different concentration gradients by taking an acetonitrile solution of pyridine as a solvent; detecting the prepared carbonyl compound derivative solutions at different concentration gradients to obtain corresponding high-performance liquid chromatograms by utilizing high-performance liquid chromatographic instrument with an ultraviolet detector; drawing a standard working curve of carbonyl compound derivatives by taking the concentrations of the carbonyl compound derivatives in the carbonyl compound derivative solutions as the abscissa and taking the ultraviolet response integral areas of the carbonyl compound derivatives at different concentrations as the ordinate; measuring a sample solution to be measured by utilizing the high-performance liquid chromatographic instrument with the ultraviolet detector, and calculating the content of the carbonyl compound in the sample solution to be measured. The method is simple in pretreatment, convenient to operate, short in analysis time, high in sensitivity, recovery rate and precision and suitable for the measurement of the content of the carbonyl compound in the electronic cigarette liquid.
Owner:CHINA TOBACCO ANHUI IND CO LTD
Method for quickly measuring harmful ingredients in main stream smoke of cigarette
InactiveCN105866351ARapid determinationThe detection method is simpleMaterial analysisCrotonaldehydeIon chromatography
The invention discloses a method for quickly measuring harmful ingredients in main stream smoke of a cigarette. According to the method, solvent gathering and filter disc gathering are adopted on a smoking machine at the same time, carbon monoxide is detected through a non-scattering infrared detection on the smoking machine, a solvent is used for gathering ammonia, hydrogen cyanide and crotonaldehyde, a filter disc is used for gathering NNK, ammonia, hydrogen cyanide and phenol, and after being collected, samples are detected through efficient high oerformance liquid chromatography, ion chromatography and a liquid chromatogram / gas chromatograph-mass spectrometer. The method integrates six tobacco industry standard methods for harmful ingredient detection in smoke of the cigarette, operation is easy and convenient, the analysis procedure is simplified, the analysis step of repeatedly smoking the cigarette is avoided, precision is good, and the method is suitable for measuring the content of the harmful ingredients in the main stream smoke of the cigarette.
Owner:CHINA TOBACCO ANHUI IND CO LTD
Method for detecting microelements in chromium powder
InactiveCN107917907AEliminate spectral interferenceEliminate the effects ofAnalysis by thermal excitationLength waveUltimate tensile strength
The invention discloses a method for detecting microelements in chromium powder. On an inductively coupled plasma atomic emission spectrometer, the best detection condition and the optimum detection wavelength of to-be-detected microelements are selected, and the standard work curve is obtained by detecting standard serial solutions of chromium substrates; a sample solution is detected according to the detection conditions of the standard serial solutions and the best detection wavelength of each microelement, and corresponding spectral line intensity of to-be-detected microelements in the sample solution is obtained; the content of the to-be-detected microelements in the sample solution is determined according to the acquired standard work curve and the corresponding spectral line intensity of the to-be-detected microelements in the sample solution. The content of multiple microelements in chromium powder can be measured simultaneously with the detection method; with the adoption of amatched standard work curve method of the of chromium substrates, spectral interference of the substrates with chromium as a major component to microelement determination is eliminated, influence ofa hydrochloric acid solution to the substrates is also eliminated, and the accuracy of the microelement detection result is high.
Owner:ZIGONG CEMENTED CARBIDE CORP
Preparation method and application of magnetic diethylstilbestrol molecularly-imprinted polymer
ActiveCN104193875AEasy to prepareImprove applicabilityComponent separationOther chemical processesBulk polymerizationOrganic chemistry
The invention relates to the technical fields of separation and analysis and particularly discloses a preparation method and application of a magnetic diethylstilbestrol molecularly-imprinted polymer based on an organic-inorganic hybridizing technology. The preparation method comprises the steps of preparing ferroferric oxide particles by using a coprecipitation method; preparing silanized ferroferric oxide by using a stober method; preparing an organic and inorganic hybrid magnetic diethylstilbestrol molecularly-imprinted polymer by using a bulk polymerization method; and grinding the polymer, sieving, adding an eluent to extract and elute, and then, drying to obtain the magnetic diethylstilbestrol molecularly-imprinted polymer. A target product, namely diethylstilbestrol, can be rapidly combined on the surface of the magnetic diethylstilbestrol molecularly-imprinted polymer synthesized by using the preparation method and can be rapidly separated from a reaction system under the action of an external magnetic field, so that the aim of efficiently separating a trace amount of diethylstilbestrol from a complex matrix at high specificity is achieved, and the sample pretreatment efficiency is greatly increased.
Owner:QILU UNIV OF TECH
Method for detecting tripolycyanamide in aquatic product via pressurized capillary electrochromatography
The invention relates to a method for detecting tripolycyanamide in an aquatic product via pressurized capillary electrochromatography, which comprises the steps of: 1) sample preparation; 2) sample pretreatment: centrifugal extraction of a sample by mixed solution of trichloroacetic acid with the mass concentration of 0.8-1.2 percent and acetonitrile at the volume ratio of (1.5-2.5):1, purification by an MCX (methoxycinnamate) solid-phase extraction column, and filtration by a filter film of 0.20-0.24mum for determination via the pressurized capillary electrochromatography; 3) preparation of standard tripolycyanamide solution; 4) analysis via the pressurized capillary electrochromatography; and 5) detection and analysis of the sample, quantitative analysis according to the retention time, and then quantitative analysis in an external marking method according to the peak area. The analytical method is efficient, accurate and highly sensitive, and the demands of drug detection of the tripolycyanamide in the daily aquatic product can be satisfied.
Owner:NINGBO ACAD OF SCI & TECH FOR INSPECTION & QUARANTINE
Atmospheric environment chloride ion deposition rate testing device and method
InactiveCN110927329AHigh precisionGood repeatabilityChemical analysis using titrationEnvironmental chemistryCorrosive substance
The invention discloses an atmospheric environment chloride ion deposition rate testing device and method. The method comprises the steps of chloride ion deposition, chloride ion dissolution, chlorideion titration and blank sample determination, the chemical reagent silver nitrate used in the whole test process is low in toxicity, highly toxic and highly corrosive dangerous chemicals used in an existing method are avoided, and the test operation safety is high. The titration process is automatic, simple in flow and convenient to operate. The method can greatly save the test time, has high accuracy, reliability and safety, can quickly analyze and test a large amount of to-be-tested gauze in a short time, and improves the working efficiency of power grid atmospheric corrosion map construction of the State Grid Corporation of China.
Owner:STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
Method for acquiring logged-on user password from memory mirroring documents of 64-bit Windows operation system
ActiveCN105893107AAnalysis effect impactAnalytical method is accurateDecompilation/disassemblyUser identity/authority verificationPlaintextOperational system
The invention provides a method for acquiring the logged-on user password from memory mirroring documents of a 64-bit Windows operation system. The method comprises the following steps: (a) acquiring version information of a system; (b) acquiring the value of a PEB structure variable from aCR3 register and a process environment block of lsass.exe process; (c) dumping execution samples of dynamic link library lsasrv.dll and tspkg.dll; (d) acquiring key related data; (e) acquiring user information from lsasrv.dll; (f) acquiring a login user master certificate from the tspkg.dll dumping document; and (g) acquiring the password. The method for acquiring the logged-on user password plaintext is accurate and efficient, has the analysis effect not influenced by password complexity, and is an important means for acquiring user login information from a physical memory mirroring document; and the acquired login user password is an important evidence in computer online evidence collection.
Owner:SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN
Fault locating method and device for false loop of intelligent transformer substation
The invention relates to a fault locating method and device for a false loop of an intelligent transformer substation, and the method comprises the steps: correlating the false loop and all nodes passing through the false loop according to an SCD file; removing faults of all topological nodes, through which the false loop generating a broken chain passes, one by one when the chain breaking warninginformation of the false loop is received till the topological node generating a fault is positioned. When secondary equipment has a false loop fault, the method can help an intelligent transformer substation system analyze a chain breaking fault point of the false loop of the secondary equipment, achieves the efficient analysis of the positions of most chain breaking fault points on the false loop, and is a new efficient analysis method for an intelligent analysis business of the false loop.
Owner:XUJI GRP +4
A GPU-based three-dimensional medical image registration similarity calculation method
ActiveCN109919987AImprove registration accuracyImprove robustnessImage analysisCharacter and pattern recognitionMutual informationEvaluation data
The invention discloses a GPU-based three-dimensional medical image registration similarity calculation method. An operation platform with an NVIDIA GeForce series display card is used, a thread execution kernel function is reasonably distributed, three-dimensional image gray scale information is calculated and processed through combination of a CPU and serial and parallel, regional mutual information is obtained, and similarity measurement can be conducted on three-dimensional medical image registration. Compared with a common mutual information method, more accurate evaluation data can be obtained, the processing speed is greatly increased through GPU parallel computing, and an accurate, stable and repeatable method can be provided for the three-dimensional medical image registration process.
Owner:樾脑云符医学信息科技(浙江)有限公司
Near-infrared spectrum analysis method for fiber content of textile product
ActiveCN108267414AReduce pollutionEfficient analysis methodMaterial analysis by optical meansInfraredAnalysis method
The invention discloses a near-infrared spectrum analysis method for the fiber content of a textile product. The near-infrared spectrum analysis method comprises: 1) pre-treating a sample: taking a plurality of textile samples, dividing into calibration set samples, verification set samples and samples to be detected, and determining content reference values; 2) carrying out sample preparation treatment: carrying out crushing treatment, and respectively preparing corresponding fiber cakes; 3) collecting spectral data; 4) establishing a calibration model: associating the calibration set spectral data matrix with the content reference value matrix to establish a correction model; and 5) calculating the result: substituting the spectral data of the sample to be detected in the step 3) into the calibration model, and calculating the fiber content of the sample to be detected so as to obtain the near-infrared determination result of the sample to be detected. The analysis method of the invention has advantages of rapidness, high efficiency, time saving, labor saving and high accuracy of the detection result.
Owner:INSPECTION AND QUARANTINE TECHNOLOGY CENTER ZHONGSHAN ENTRY EXIT INSPECTION AND QUARANTINE
Psychological behavior analysis method based on compatible storage rate and FP-growth
InactiveCN109741832AAnalytical method is accurateEfficient analysis methodMedical data miningAnalysis methodComputer science
The invention relates to a psychological behavior analysis method based on a facultative rate and FP-growth and belongs to the technical field of data mining. The method includes, firstly, establishing an affair database of human psychological behavior vocabulary data; then, solving a compatible storage rate and a minimum compatible storage rate of each psychological behavior vocabulary compatiblestorage rate item so as to reserve a strong association item and generate a new transaction set D; then, scanning the D for the first time, and calculating and reserving frequent vocabularies; then scanning D for the second time, and constructing a frequent pattern tree FP-tree, and extracting a frequent item set; secondly, generating a corresponding strong association rule by each frequent itemset, and calculating the confidence degree of each strong association rule; and finally, sorting the frequent item sets according to the confidence degree of each strong association rule, and visuallydisplaying the association degree of each psychological behavior vocabulary according to the result. According to the invention, the optimized PE-growth algorithm plays a role in correlation analysisof human psychological behavior vocabularies, and a more accurate and efficient analysis method is provided for disciplines such as psychology and micro-expressions.
Owner:KUNMING UNIV OF SCI & TECH
Restricted access poly(3-sulfopropyl methacrylate (SPM)) modified silica gel chromatographic packing
InactiveCN103626934AGood biocompatibilityReduce lossesOther chemical processesComponent separationChemistryGlycerol
The invention relates to restricted access poly(3-sulfopropyl methacrylate (SPM)-co-ethylene glycol dimethacrylate (EDMA)) modified silica gel chromatographic packing (Silica-g-p(SPM-co-EDMA)-g-pGMMA ([poly(glycerol monomethacrylate)]) and a preparation method thereof. The silica gel chromatographic packing is a material formed by grafting a double-layer polymer onto the surface of silica gel, and adopts poly(3-SPM-co-EDMA) as an inner layer and pGMMA as an outer layer. The expression of the silica gel chromatographic packing is Silica-g-p(SPM-co-EDMA)-g-pGMMA, wherein Silica is porous silica gel, g indicates grafting, p(SPM-co-EDMA) indicates a cross-linked polymer of 3-SPM and EDMA, and pGMMA indicates poly(glycerol monomethacrylate). The silica gel chromatographic packing can serve as a chromatographic stationary phase or a solid phase extraction material for analyzing biological samples and environmental samples, directly samples and extracts cationic compounds, and improves the analysis efficiency and accuracy. A method for measuring melamine and cyromazine in milk by online solid phase extraction / high-performance liquid chromatography coupling technology is provided and has good accuracy and reproducibility.
Owner:NANKAI UNIV
Method for controlling quality of Shenbao mixture percolating fluid
ActiveCN102106956AFast online monitoringSimple and fast operationNervous disorderAntinoxious agentsMetrologyPhysical chemistry
The invention relates to a method for controlling quality of Shenbao mixture percolating fluid, and particularly relates to a method for fast measuring the specific gravity of the Shenbao mixture percolating fluid and the content of icariin. The method comprises the following steps: step 1, measuring the near infrared spectrum and specific gravity of the percolating liquid and a standard graph and data of icariin content during the process of qualified Shenbao mixture preparation; step 2, respectively establishing corresponding models among between the percolating liquid near infrared spectrum, the specific gravity and the concentration of the icariin by using chemometrics software; step 3, measuring the near infrared spectrum of the percolating liquid to be measured during the process of Shenbao mixture preparation; and step 4, respectively obtaining the specific gravity of the percolating fluid sample to be measured and the concentration of the icariin in the Shenbao mixture preparation by utilizing the corresponding models established in the step 2 via the chemometrics software.
Owner:JIANGXI HUIREN PHARMA CO LTD +1
Device for measuring internal structure of coke and measuring method thereof
InactiveCN106323877AThe measurement result is accurateThe measurement results are accurate and reliableScattering properties measurementsImaging analysisTest sample
The invention provides a device for measuring an internal structure of coke and a measuring method thereof; the device comprises a microscope and a computer; the computer is used for controlling rotation of a polarizer of the microscope and front, rear, left, right, upper and lower three-dimensional moving of an object stage. The measuring method comprises the following steps: pretreating a to-be-tested sample for standby application; establishing the relationship between pixel values of a digital image of a substance and the reflectivity; shooting digital images for analysis of sample bireflectivity and optical anisotropic indexes; determining an effective point classification statistical rule; and analyzing an optical structure of the coke by the statistical rule. The device and the method have the advantages that compared with an image analysis method purely relying on gray and shape characteristics, the method adopts three parameters of the maximum reflectivity, the bireflectivity and the optical anisotropic indexes for identification and analysis of the optical structure, and the measured results are more accurate and more reliable; and the whole analysis process is fully automatic, and the method is a fast and efficient analysis method.
Owner:BAOSHAN IRON & STEEL CO LTD +1
Extraction and detection method of rapeseed glucosinolate
InactiveCN111624270AIncrease varietyAnalytical method is accurateComponent separationBiotechnologyOil processing
The invention discloses an extraction and detection method of rapeseed glucosinolate, which belongs to the field of deep processing of oil crops. The extraction and purification method of glucosinolate in rapeseeds is improved through comprehensive application of technologies such as constant-temperature water bath, ultrasonic extraction, a solid-phase extraction column, a microfiltration membraneand the like; an ion pair extraction method is utilized to establish an accurate and efficient rapeseed glucosinolate analysis method; the method can meet the detection requirements of 14 known rapeseed glucosinolates, and six newly discovered glucosinolate components existing in rapeseeds are extracted and qualitatively characterized for the first time. The method solves the problem of unclear degradation mechanism of the traditional rapeseed glucosinolate as a flavor precursor substance, improves the stability of the rapeseed glucosinolate in the extraction process, and has great application potential and economic value in the fields of rapeseed oil processing raw material selection, breeding direction and the like.
Owner:INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
Method for qualitative and quantitative detection on glycoside structured surfactant
InactiveCN108680695AEfficient analysis methodStability analysis methodComponent separationGlycoside formationDissolution
The invention discloses a method for qualitative and quantitative detection on a glycoside structured surfactant. The method comprises the following steps: step 1: separating to-be-measured substancesin a glycoside structured surfactant sample by adopting a reverse-phase chromatography; step 2, after separation, enabling a glycoside compound to enter an electric fog detector for detection; step 3, performing quantitative measurement on the contents of the to-be-measured substances in the sample by adopting an external standard quantitative method. The method disclosed by the invention has thebenefits that the method combining the reverse-phase chromatography with the electric fog detector is established to perform qualitative and quantitative detection on glycosides with surfactant structures, so that the microgram per milliliter level of sample concentration can be accurately measured. The method is a high-throughput test method, and the to-be-measured glycosides in the sample are not required to be derived or modified. The invention provides the method which is wide in application range, accurate and effective for the qualitative and quantitative detection on the glycosides, thereby providing a strong support for dissolution, stability and characterization of membrane proteins.
Owner:SHANGHAI WUXI BIOLOGIC TECH CO LTD
Ad hoc network node signal strength analysis method
InactiveCN108923978AAccurate troubleshootingReliable and efficient methodTransmission monitoringData switching networksStructure of Management InformationData content
The invention discloses an ad hoc network node signal strength analysis method. The method comprises the following steps: (1) a server sends an analysis preparation notice to an ad hoc network device;(2) after the ad hoc network device receives the notification of the server, an own command line tool queries the signal strength information packaged in a fixed format and is returned to the server; (4) after receiving the signal strength information of the node, the server parses the data and temporarily stores the data; (5) the server summarizes the received signal strength information of thenode every T seconds; and (6) the server generates a corresponding topology map according to the summarized data contents, and the topology map dynamically displays the signal strength information ofall node neighbors and logical location information. The method of the invention is reliable and efficient, the inconvenience of manual operation is abandoned, and an ad hoc network device manager can perform accurate misarrangement and analysis due to the topology map display.
Owner:JIANGSU ZHONGLI ELECTRONICS INFORMATION TECH CO LTD
Method for detecting formaldehyde in air
InactiveCN108195948AReduce manufacturing costReduce pretreatment costsComponent separationSensitive analysisGas phase
The invention discloses a method for detecting formaldehyde in the air, belonging to the technical field of air detection. The method comprises the following steps: adding 16-22 mL of distilled waterinto a porous glass plate absorption tube; collecting gas in an environment, and filling the porous glass plate absorption tube with the collected gas so as to obtain a formaldehyde-absorbed solution;diluting formaldehyde to prepare standard formaldehyde solutions with concentrations which are in a range of 0.1-1.0 g / L and present at least five different concentration gradients; determining gas chromatographic determination conditions, subjecting the prepared standard formaldehyde solutions to gas chromatographic determination, and drawing a standard curve; and carrying out gas chromatographic determination on the formaldehyde-absorbed solution. The method of the invention can realize rapid and direct detection of the content of formaldehyde in the air, has high sensitivity, low detectionlimit, no complicated pre-treatment process and high accuracy of detection results, and is an accurate, efficient and sensitive analysis method for determining the content of formaldehyde.
Owner:安徽宏远职业卫生技术服务有限公司
Method for simultaneously determining multiple heterocyclic pesticides, degradation products and intermediates in water by adopting liquid-liquid extraction/liquid chromatography
ActiveCN112461960AEasy to operateLow detection limitComponent separationFluid phasePesticide degradation
The invention provides a method for simultaneously determining various heterocyclic pesticides, degradation products and intermediates in water by liquid-liquid extraction / liquid chromatography. The method comprises the following steps of by using dichloromethane as an extractant, extracting a neutral water sample added with sodium chloride, extracting the target, drying, and concentrating the extract to obtain the target product; purifying the extract, and replacing the solvent with acetonitrile or directly replacing the solvent with acetonitrile; and separating and detecting by using a liquid chromatograph, carrying out gradient elution by using a ternary mobile phase or a binary mobile phase during separation, and quantifying by using an external standard method according to the qualitative retention time to obtain the concentration of each target object in the water sample. The method is efficient, easy to operate, low in detection limit, good in accuracy and precision and good inlinear relation, 16 heterocyclic pesticides, degradation products and intermediates can be detected at the same time, and problems that an existing heterocyclic pesticide detection method is not highin integration level, incomplete in target object coverage and even vacant, tedious in step and high in detection cost are solved; requirements of heterocyclic pesticide environment monitoring and management in China at the present stage are met.
Owner:湖南省生态环境监测中心
Carbon nano material modified electrode capable of simultaneously detecting Cu+ and pH and preparation method
ActiveCN109142474AHigh selectivityHigh sensitivitySulfide preparationMaterial electrochemical variablesIn vivoSolvent
The invention discloses a carbon nano material modified electrode and a preparation method thereof. A carbon nano material, a Cu+ recognition ligand, a reference molecule and a pH response molecule are used as raw materials, and in a solvent at 10-25 DEG C, the carbon nano material, the Cu+ recognition ligand, the reference molecule and the pH response molecule are modified on the carbon nano material to prepare the carbon nano material modified electrode. The invention also discloses the application of the carbon nano material modified electrode for simultaneous detection of Cu+ and pH in vivo and in vitro. The invention also discloses the application of the carbon nano material modified electrode in simultaneously detecting Cu+ and pH, and the carbon nano material modified electrode hasthe advantages of high selectivity and high sensitivity; the electrode is used for measuring metal ions (Cu+) and pH in a body, and achieves simultaneous, in situ and real-time online electrochemicaldetection. The carbon nano material modified electrode has important significance for further elucidating the role of the Cu+ and pH in physiological and pathological processes.
Owner:EAST CHINA NORMAL UNIV
Method for analyzing scratch of hard and brittle materials on basis of trochoidal feed tracks
ActiveCN108627386AClose logical relationshipComplete analysis methodStrength propertiesGeometric relationsMaterial removal
The invention discloses a method for analyzing scratch of hard and brittle materials on the basis of trochoidal feed tracks. The method includes acquiring test pieces with trochoidal scratch; dividingtrack line distribution regions of the test pieces; extracting experimental factor representation information of 'point', 'line' and 'plane' critical regions according to particular experimental schemes by the aid of corresponding observation equipment by reference to track line division rules; integrating related theories such as theoretical mechanics and fracture mechanics with one another, combining information acquired by trochoidal scratch track critical region equipment and analyzing correlations between experimental factors and material damage and material removal mechanisms. Divisionrules for the track line distribution regions are plane space geometric relations among 'points', 'lines' and 'planes'. The experimental factor representation information of the 'point', 'line' and 'plane' critical regions is related to the material damage and material removal mechanisms. The method has the advantage that the method is a complete and efficient method with close logic relations andaccordingly has a great scientific research value in the aspect of research on hard and brittle material removal mechanisms.
Owner:TIANJIN UNIV
Method for analyzing flavonoid chemical components in walnut flowers
InactiveCN107607654ARapid identification methodEfficient identification methodComponent separationRefluxWalnut Nut
The invention discloses a method for analyzing flavonoid chemical components in walnut flowers. The method comprises the following steps: extracting the medicine walnut flowers by using an ethanol heating reflux method, concentrating, redissolving, carrying out ultrasonic treatment, and filtering to obtain a test solution; detecting the test solution by using an ultrahigh performance liquid chromatography-quadrupole-time of flight mass spectrometry so as to obtain secondary mass spectrometry information of compounds, and analyzing the information about the chemical components in the detectionresult. The method provided by the invention can be used for rapidly and efficiently analyzing the flavonoid compounds in the walnut flowers, thus providing a basis for the research and rapid and accurate identification of effective substances of the walnut flowers and being beneficial to the development and utilization of the walnut flowers.
Owner:CHINESE ACAD OF INSPECTION & QUARANTINE +1
Method used for judging collision coagulation of charged particles
ActiveCN106021699AIn line with the measured lawEfficient analysis methodElectrostatic separation detailsSpecial data processing applicationsParticle collisionParticle physics
The invention discloses a method used for judging collision coagulation of charged particles. A particle motion law is calculated by adopting a discrete particle model and used for judging the collision coagulation of the charged particles; and an adopted particle collision coagulation mechanism conforms to existing theoretical analysis, so that a coagulation phenomenon of the charged particles can be simulated truly, which has an important positive influence on particle coagulation research and engineering application. The coagulation effect of an electric coagulator on PM10 obtained according to a numerical simulation calculation result is the same as that obtained according to an actual measurement result, and the coagulation effects obtained according to the numerical simulation calculation result and the actual measurement result both reach more than 45%, so that the method for judging the collision coagulation of the charged particles conforms to an actual measurement law, and an efficient analytic means is provided for charged particle coagulation research.
Owner:西安宇清环境工程科技有限责任公司
A method for the determination of carbonyl compounds in electronic cigarette liquid
ActiveCN104267135BRapid determinationSimple elution procedureComponent separationUltraviolet detectorsElectronic cigarette
Owner:CHINA TOBACCO ANHUI IND CO LTD
A psychobehavioral analysis method based on coexistence rate and association rules
ActiveCN109344235APlay the role of correlation analysisAnalytical method is accurateDigital data information retrievalSpecial data processing applicationsMachine learning
The invention relates to a psychological behavior analysis method which is always based on coexistence rate and association rules, belonging to the technical field of data association rules mining. Firstly, a transaction database of human psychological and behavioral vocabulary data is established. Then, the coexistence rate and the minimum coexistence rate of the coexistence terms of the mental behavior words are obtained, so that the strong correlation terms are preserved and a new transaction set is generated. Then, the association rule algorithm is introduced to compute the frequent itemsets with different number of items, in which each mental behavior word in the new transaction set is regarded as an item. Secondly, the corresponding strong association rules are generated from each frequent itemset, and the confidence level of each strong association rule is calculated. Finally, by sorting these frequent itemsets according to the confidence level of each strong association rule, the result directly shows the relevance degree of each psychological behavior words. The invention provides that the coexistence rate optimizes the data of the association rule algorithm, and the optimized association rule algorithm plays an association analysis role on the human psychological behavior vocabulary.
Owner:KUNMING UNIV OF SCI & TECH
Macro-micro model equivalence method for analyzing use state of reinforced concrete in chloride ion environment
InactiveCN113486530AClear design ideasEasy to operateGeometric CADDesign optimisation/simulationReinforced concreteChloride
The invention discloses a macro-micro model equivalence method for analyzing the use state of reinforced concrete in a chloride ion environment, and relates to the technical field of building material analysis, and the method comprises the following steps: S1, establishing equivalence of mechanical properties of micro-concrete and macro-concrete models; S2, establishing an equivalent diffusion coefficient of a single aggregate and ITZ; S3, according to the quantity ratio of the aggregate with each particle size, obtaining equivalent diffusion coefficient Deq of aggregate and ITZ; and S4, enabling the mortar, the aggregate and ITZ mesoscopic concrete to be equivalent to a concrete macroscopic diffusion coefficient D. According to the method disclosed by the invention, aiming at a complex maritime work environment, the calculation dimension of an analysis main body can be effectively reduced and the calculation efficiency is improved while the analysis requirement is met by the equivalent method, and the basic method in the durability research of the reinforced concrete structure is further enriched and developed.
Owner:NANJING VOCATIONAL UNIV OF IND TECH
Method for analyzing elemental copper in organosilicone slag slurry
The invention discloses an analysis method for detecting the elemental copper in organosilicone slag slurry. The method is mainly characterized in that when an organosilicone monomer is produced, slaggenerated by an organosilicone monomer synthesizer is subjected to chemical reagent treatment so as to enable the slag to lose the activity, then the slag slurry is subjected to high-temperature digestion by using hydrofluoric acid and nitric acid, the elements such as silicon and fluorine are removed by using perchloric acid, finally, the slag is prepared into a sample solution by using hydrochloric acid, and the content of the copper element in the sample solution is measured under the selected optimal measurement condition by utilizing an inductively coupled plasma spectrometer. Practice proves that the chemical activity of the slag slurry treated through the method is reduced, the safety is enhanced, the experimental operation steps are simple, the detection result of the element of the copper is accurate, and guidance data are provided for guiding the monomer synthesis production process adjustment and recycling the metal copper in the slag slurry in the subsequent process.
Owner:湖北环宇化工有限公司
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