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30 results about "Chromatographic measurement" patented technology
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Fat-Soluble Vitamins: Clinical Indications and Current Challenges for Chromatographic Measurement. Ali A. Albahrani 1, 2 and Ronda F. Greaves 1, 3 ... his PhD candidature investigating “A Novel Simultaneous Quantification Method for Fat-Soluble Vitamins using Liquid Chromatography ...
Apparatus for reducing variation in sample temperatures in a liquid chromatography system
ActiveUS20130019695A1Reduce temperature changesComponent separationWithdrawing sample devicesEngineeringChromatographic measurement
Described is an apparatus for reducing a temperature variation of a liquid chromatography sample. A tray drive using at least one of linear or rotational motion moves a sample tray along a path inside a sample compartment of the liquid chromatography system. A control module coordinates the movement of the sample tray by the tray drive and the movement of a sample needle by a needle drive so that any sample in the sample tray can be injected into the mobile phase of the system during a sample load operation. The tray drive is also used to move the sample tray along the path during a temperature averaging period when no loading occurs. Differences in sample temperatures due to variations in the air temperature at different locations inside the sample compartment are reduced, leading to more accurate and repeatable chromatographic measurement results.
Owner:WATERS TECH CORP
Differential parallel optical chromatographic microscopic measuring device and method
InactiveCN105371757AOvercoming Axial Mechanical Step-Scan ProblemsQuick measurementUsing optical meansMicro nanoImage detection
The invention discloses a differential parallel optical chromatographic microscopic measuring device and method, and belongs to the technical fields of optical microscopic imaging and precise measurement. A dual CCD wide field differential detection method is used, an unconjugated defocus CCD imaging detection branch is introduced on the basis of single-path CCD conjugated quasi-focus imaging detection, illuminating phase-shift image fields of the structure are collected synchronously, the near defocus detection intensity image field is subtracted from the far defocus detection intensity image field to obtain distribution of the wide-field differential detection image field, differential optical theory and the Fourier optical theory are used to establish a theoretical association model between the differential intensity field and the sample surface height, and the intensity and the displaced linear calibration curve are used to realize wide field chromatographic measurement for the 3D morphology of a microstructure. The device and method can realize parallel and stereo-chromatographic rapid detection free of axial mechanical scanning, and provide a brand new effective measurement approach for non-contact, high-resolution and rapid chromatographic image and measurement of 3D surface morphology of a micromechanical, microelectronic or micro-optical micro nano device or the internal structure of a transparent sample.
Owner:XI AN JIAOTONG UNIV
Measuring method for fluorine, chlorine, sulfur and nitrogen in imported petroleum coke
The invention discloses a measuring method for fluorine, chlorine, sulfur and nitrogen in imported petroleum coke. The measuring method includes the steps of connection assembly sample treatment, sample pretreatment, chromatographic measurement, result calculation and the like. The measuring method is convenient, accurate and efficient.
Owner:NANTONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF THE PEOPLES REPUBLIC OF CHINA
Method for operating an electrical apparatus and electrical apparatus
ActiveCN104756217AAnalysis by subjecting material to chemical reactionColor/spectral properties measurementsAdditive ingredientElectrical devices
A method and device for operating a fluid-insulated electrical apparatus (1) are disclosed. The insulation fluid (10) of the electrical apparatus (1) comprises at least two fluid components (A,B) which are a priori ingredients of the insulation fluid (10). The method comprises the step of carrying out at least one optical measurement and / or at least one gas chromatographic measurement on the insulation fluid (10). Using this measurement or these measurements or at least one additional measurement on the insulation fluid(10), a first concentration (cA) of the first fluid component (A) and a second concentration (cB) of the second fluid component (B) are derived. Then, using the first concentration (cA) and the second concentration (cB), and, advantageously, a dielectric breakdown strength Ebd of the insulation fluid (10), an operating state (O) of the electrical apparatus (1) is derived.
Owner:HITACHI ENERGY SWITZERLAND AG
Method of measurement in chromatography
InactiveUS7192784B2Improve accuracyHigh measurement accuracyBioreactor/fermenter combinationsBiological substance pretreatmentsChromatographic measurementBiosensor
A substantial amount of a marker reagent associated with a measurement is measured in a marker reagent measurement area, and the substantial amount of the marker reagent is reflected by a result obtained in a reaction result measurement area where a reaction with a measurement target in an inspection target solution is measured. Thereby, an influence of external environmental factors, factors in a property of the inspection target solution, an erroneous operation in a measurement operation or the like is eliminated, whereby a chromatography measuring method employing a biosensor with higher accuracy and higher reliability can be provided.
Owner:PHC HLDG CORP
Chromatographic measurement apparatus
ActiveCN102033109AAvoid wastingPrevent undue troubleMaterial analysis by observing effect on chemical indicatorComponent separationTest articleChromatographic measurement
A chromatographic measurement apparatus (1) for measuring a color development state of an insoluble carrier (21) with a sample solution and a label solution developed thereon to test a test article, the insoluble carrier (21) including a test detection area (A, B) where a material that binds specifically to a test article is immobilized and a control detection area (C) used for determining an end of measurement. The chromatographic measurement apparatus (1) includes : a determining unit (32) for carrying out determination of validity and determination of necessity of amplification of a test result of the test article; and an amplifying unit (60) for amplifying the color development state according to the result of the determination of necessity of amplification by the determining unit (32) . The amplification is carried out only when it is determined that amplification is necessary.
Owner:FUJIFILM CORP
Improved gas chromatographic measurement method for naphthalene content in coal tar
InactiveCN102128892AReduce work intensityShorten the analysis cycleComponent separationPolyesterHydrogen pressure
The invention discloses a method for quickly measuring the naphthalene content in coal tar. In the method, toluene is selected as a solvent, poly(ethylene glycol succinate) is selected as fixing solution, an acid washed 201red support is adopted, the ratio of the fixing solution to the acid washed 201 red support is 0.07, and a chromatographic column is 2 meters long. The method comprises the following steps: dissolving 0.7 gram of poly(ethylene glycol succinate) in chloroform, adding the acid washed 201 red support and uniformly coating the poly(ethylene glycol succinate) on the acid washed 201 red support; and drying in the air, pumping the solution into the stainless steel chromatographic column by using a vacuum pump, mounting the chromatographic column chromatographic instrument, introducing a carrier gas at a small flow rate, aging for more than 8 hours under the condition that the temperature of a column box is 180 DEG C till a base line is stable, and keeping the aged product for later use. The instrument test conditions are as follows: the column temperature is 120 DEG C; the hydrogen flame temperature is 220 DEG C; the gasification temperature is 220 DEG C; the hydrogen pressure (column pressure) is 0.06MPA; the air pressure is 0.20MPa; the sensitivity is low; and the attenuation degree is 1. A qualitative method and a quantitative method are selected by: drawing a standard curve by using an internal standard curve method; and processing a test sample and working out a result. In the invention, the steps are simple, the operation is simple and a large number of samples can be analyzed in a short time period.
Owner:BAOSTEEL GROUP XINJIANG BAYI IRON & STEEL
Process for preparing separation of theanine standard contrast product
InactiveCN1532186AReduce pollutionReduce manufacturing costComponent separationCarboxylic acid amide separation/purificationChromatographic separationCentrifugation
The present invention discloses the preparation process of standard theanine contrast product from tea extractive. Tea extractive with theanine content over 10% is prepared into theanine through dissolution in water, ultrasonic extraction, centrifugation to obtain supernatant, water membrane filtering and high efficiency liquid phase chromatographic separation. The quality of the ultimate product is controlled through ultraviolet, infrared and high efficiency liquid phase chromatographic identification. The product has purity reaching 98% (HPLC), and may be used as quantitative and qualitative standard contrast for the high efficiency liquid phase chromatographic measurement of theanine in various tea products.
Owner:HUNAN NORMAL UNIVERSITY
Method for detecting pesticide residues in anti-inflammatory and analgesic bolus
The invention provides a method for detecting pesticide residues in a traditional Chinese medicine, and particularly relates to a method for detecting 9 organic chloride pesticide residues in anti-inflammatory and analgesic bolus. According to the method provided by the invention, a gas chromatographic method is adopted for measurement through optimization and methodology study on a preparation method of samples to be tested and gas chromatographic measurement conditions. The method has higher precision and repeatability, good sensitivity and a large linear range, can meet the requirements on a sampling recovery test, obtains accurate and reliable measurement results, and can meet the requirements on detection of the organic chloride pesticide residues in the anti-inflammatory and analgesic bolus.
Owner:ZHANGZHOU PIEN TZE HUANG PHARM
Chromatographic measurement apparatus
ActiveUS8474303B2Improve reliabilityThe way is simple and fastMaterial analysis by observing effect on chemical indicatorComponent separationTest articleChromatographic measurement
A chromatographic measurement apparatus for measuring a color development state of an insoluble carrier with a sample solution and a label solution developed thereon to test a test article, the insoluble carrier including a test detection area where a material that binds specifically to a test article is immobilized and a control detection area used for determining an end of measurement. The chromatographic measurement apparatus includes: a determining unit for carrying out determination of validity and determination of necessity of amplification of a test result of the test article; and an amplifying unit for amplifying the color development state according to the result of the determination of necessity of amplification by the determining unit. The amplification is carried out only when it is determined that amplification is necessary.
Owner:FUJIFILM CORP
Collection method and measurement method for alkali metals and compounds thereof in air in working place
ActiveCN103499654ASimple structureLarge adsorption capacityComponent separationWithdrawing sample devicesAbsorption capacityAlkali metal
The invention discloses a collection method for alkali metals and compounds thereof in air in a working place. The sampling can be finished by introducing the air in the working place into a sulfuric acid and methanesulfonic acid mixed aqueous solution which serves as an absorption medium. The collection method is simple, high in collection efficiency and high in absorption capacity. The invention also discloses a measurement method for the alkali metals and the compounds thereof in the air in the working place. The measurement method comprises the following steps of preparing a standard sequence of alkali metal ions; measuring a standard series, a sample and a blank reference solution through an ion chromatograph, drawing a standard curve, subtracting a response value measured by the sample into the standard curve to obtain the concentration of the alkali metal ions in the sample, and carrying out conversion to obtain the concentration of the alkali metals and the concentration of the compounds of the alkali metals in the air in the working place. According to the collection and measurement methods, various alkali metals and the compounds thereof can be simultaneously collected and measured through one-time sampling and under a chromatographic condition; the chromatographic measurement operation is simple; the stability is high; a result is reliable.
Owner:ZHEJIANG ACAD OF MEDICAL SCI
Binder for formation of ceramic or for use in conductive paste, and use of same
InactiveUS20170008988A1Good storage stabilityImprove adhesionCeramic shaping apparatusNon-conductive material with dispersed conductive materialConductive pastePolyvinyl alcohol
There is provided a binder for ceramic formation or a conductive paste, comprising polyvinyl acetal having a degree of acetalization of from 50 to 85 mol %, a content of vinyl ester monomer unit of from 0.1 to 20 mol %, and having a viscosity-average degree of polymerization of from 200 to 5000, wherein a peak-top molecular weight (A) as measured by a differential refractive index detector and a peak-top molecular weight (B) as measured by an absorptiometer (measurement wavelength: 280 nm) in gel permeation chromatographic measurement of the polyvinyl acetal heated at 230° C. for 3 hours satisfy a formula (1) (A−B) / A<0.60 and the polyvinyl acetal has an absorbance in the peak-top molecular weight (B) of from 0.50×10−3 to 1.00×10−2.
Owner:KURARAY CO LTD
Chromatographic measurement apparatus
InactiveUS20130224074A1Highly economicalEconomical efficiencyComponent separationWireless architecture usageChromatographic measurementBiomedical engineering
Higher economic efficiency is ensured in a chromatographic measurement even when a chromatographic measurement apparatus is used at a place with risk of contamination of testing equipment. A chromatographic measurement apparatus includes an apparatus main body and a measurement unit, wherein the apparatus main body and the measurement unit are configured to be capable of wireless communication of a signal representing measurement information obtained by the measurement unit and capable of mutual pairing setting. The apparatus main body includes a storage section for storing the measurement information, an extracting section for extracting, from a signal obtained via wireless communication, a signal from the measurement unit paired with the apparatus main body based on the pairing setting, and a display section for displaying the measurement information.
Owner:FUJIFILM CORP
Extraction method for galanthamine from lycoris radiate
The invention provides an extraction method for galanthamine from lycoris radiate. The method includes following steps: (1) determination of chromatographic conditions: employing a Kromasil100-5C18 reversed-phase column (250mm*4.6mm, 5[mu]m) as an chromatographic column and an acetonitrile-phosphoric acid buffer solution (17:83) mixture as an mobile phase, and setting a column temperature to be 35 DEG C, a sample volume to be 20[mu]L and a detection wavelength to be 290nm, wherein the phosphoric acid buffer solution, which is 7.02 in pH value, is prepared by following steps: dissolving 2.72g of potassium dihydrogen phosphate in 100ml of water, adding 1.4ml of triethylamine and performing a diluting process to 1L; (2) establishment of a standard curve: establishing a regression equation according to the chromatographic conditions in the step (1); and (3) extraction of the galanthamine: weighing 2.0g of lycoris radiate. Herb powder, adding cellulase and pectinase, adding an aqueous solution with a pH value being 4.5 at a certain temperature for carrying out an extraction process for a certain time, performing a 5000r / min centrifuge process for 20 min, taking a supernatant, performing chromatographic measurement and calculating a yield of the galanthamine. The invention is low in extraction cost, is short in extraction time, is simple in technology, is free from polluting environment and is high in extraction yield.
Owner:邳州市滨河中小企业管理服务有限公司
Method for Determination of Active Substances in Daqing Oilfield Petroleum Sulfonate Samples by Liquid Chromatography
ActiveCN109444282BRealize analysis and detectionAnalysis and detection meetComponent separationSODIUM NAPHTHALENESULFONATEPetroleum
The invention discloses a method for determining the active substance content in a petroleum sulfonate sample in Daqing Oilfield by liquid chromatography. The mixed solution of sodium dodecylbenzenesulfonate and sodium 2-naphthalenesulfonate is used as a quantitative standard solution; The standard solution is analyzed and detected by liquid chromatography, and the quantitative working curve is drawn; the actual sample solution of petroleum sulfonate with a certain concentration is accurately prepared, and the chromatographic measurement is carried out. The concentration of the active substance in the actual sample of petroleum sulfonate can be obtained by simple conversion at last. The detection performance of the invention is stable, sensitive and rapid, and the analysis speed is fast. The test results have good repeatability and small quantitative error, and the deviation from the test results obtained by the extraction method is about 1%, which can fully satisfy the active substances in the petroleum sulfonate samples used in oilfield chemical flooding. The need for tracking and monitoring of component content and content changes.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Process for preparing separation of theanine standard contrast product
InactiveCN1208313CReduce pollutionReduce manufacturing costComponent separationCarboxylic acid amide separation/purificationChromatographic separationCentrifugation
The present invention discloses the preparation process of standard theanine contrast product from tea extractive. Tea extractive with theanine content over 10% is prepared into theanine through dissolution in water, ultrasonic extraction, centrifugation to obtain supernatant, water membrane filtering and high efficiency liquid phase chromatographic separation. The quality of the ultimate product is controlled through ultraviolet, infrared and high efficiency liquid phase chromatographic identification. The product has purity reaching 98% (HPLC), and may be used as quantitative and qualitative standard contrast for the high efficiency liquid phase chromatographic measurement of theanine in various tea products.
Owner:HUNAN NORMAL UNIVERSITY
Method of analyzing purity of special CL-20
The invention relates to techniques of analyzing purities of explosives, in particular to a method of analyzing purity of special CL-20 and solves the problem that a method to accurately analyze purity of special CL-20 is not provided presently. The method that performs analysis by a correcting curve method comprises the steps of (1) weighing two CL-20 standard samples, and preparing 3 to 5 standard test solutions different in concentration, performing chromatographic measurement on the standard test solutions different in concentration under specified conditions, drawing their chromatograms,recording standard sample concentrations and standard sample chromatographic peak heights of all the standard test solutions, and calculating correcting curve parameters A and B according to the abovedata; (2) weighing two CL-29 samples under measurement, adding into volumetric flasks, performing chromatographic measurement under the conditions the same as those of the standard test solutions, recording chromatographic peak heights of the samples, calculating concentrations of CL-20 solutions, and reversing according to original masses of the samples, dilution factors of the sample solutionsto obtain CL-20 contents.
Owner:SHANXI BEIHUA GUANLYU CHEM IND
Sealed headspace gas chromatographic device suitable for radioactive sample analysis
PendingCN109557231ASolving Measurement ChallengesComponent separationGas chromatography measurementGas phase
The invention relates to a sealed headspace gas chromatographic device suitable for radioactive sample analysis. The device comprises a headspace sample injection device enclosed in a special glove box; the headspace sample injection device is connected with a gas chromatograph disposed in a ventilation cabinet through a transmission line with heating and heat preservation functions; after a radioactive sample is subjected to headspace treatment in the headspace sample injection device, a to-be-detected object enters the gas chromatograph through the transmission line for measurement. According to the sealed headspace gas chromatographic device suitable for radioactive sample analysis, the headspace sample injection device is sealed and is connected with the gas chromatograph in the ventilation cabinet through the transmission line with heating and heat preservation functions, thereby solving the problem of measurement of an organic matter in the radioactive sample; and the gas chromatographic measurement is applied to measurement of the organic matter in the radioactive sample, thereby broadening the application range of the gas chromatograph.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY
Method and equipment for monitoring syntrophic relations in a biological process fluid
InactiveUS20080217249A1Effective controlShort delayIon-exchange process apparatusWater treatment parameter controlChromatographic separationVolatile fatty acids
A method and an equipment for monitoring the syntrophic relations between different parts of a bacterial consortium in the process fluid of a biological process plant, such as a biological gas plant or waste water treatment plant, through a chromatographic measurement of the content of the individual volatile fatty acids in consecutive samples of the process fluid, the samples being acidified and filtered prior to the chromatographic separation
Owner:PIND PETER FRODE +1
Apparatus for reducing variation in sample temperatures in a liquid chromatography system
Owner:WATERS TECH CORP
A kind of detection method of 2,4-dimethylthiophenol related substances
ActiveCN107843656BHigh sensitivityThe method is simple and fastComponent separationFluid phaseMethyl benzene
The invention provides a high-performance liquid chromatography detection method for related substances of 2,4-dimethylthiophenol. The liquid chromatography measurement conditions used are: the chromatographic column is filled with octadecylsilane bonded silica gel, and the mobile phase is phosphate buffer-methanol containing cation pairs. The method has the advantages of simple and convenient method, good specificity, high sensitivity, good repeatability, etc., and is suitable for the qualitative and quantitative detection of related substances in 2,4-dimethylthiophenol.
Owner:四川弘远药业有限公司
Method for detecting pesticide residues in anti-inflammatory and analgesic bolus
The invention provides a method for detecting pesticide residues in a traditional Chinese medicine, and particularly relates to a method for detecting 9 organic chloride pesticide residues in anti-inflammatory and analgesic bolus. According to the method provided by the invention, a gas chromatographic method is adopted for measurement through optimization and methodology study on a preparation method of samples to be tested and gas chromatographic measurement conditions. The method has higher precision and repeatability, good sensitivity and a large linear range, can meet the requirements on a sampling recovery test, obtains accurate and reliable measurement results, and can meet the requirements on detection of the organic chloride pesticide residues in the anti-inflammatory and analgesic bolus.
Owner:ZHANGZHOU PIEN TZE HUANG PHARM
Determination method of fluorine, chlorine, sulfur and nitrogen in imported petroleum coke
The invention discloses a measuring method for fluorine, chlorine, sulfur and nitrogen in imported petroleum coke. The measuring method includes the steps of connection assembly sample treatment, sample pretreatment, chromatographic measurement, result calculation and the like. The measuring method is convenient, accurate and efficient.
Owner:NANTONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF THE PEOPLES REPUBLIC OF CHINA
Gas chromatographic measurement method for 2-isopropyl-6-methyl-4-hydroxy pyrimidine in intermediate
InactiveCN108459114AAccurate quantitative detection and analysisThe data is accurate and stableComponent separationGas phaseRetention time
The invention discloses a gas chromatographic measurement method for 2-isopropyl-6-methyl-4-hydroxy pyrimidine in an intermediate. According to the gas chromatographic measurement method, the intermediate is dissolved with a methanol solvent, and triphenylmethane is used as an internal standard substance, so that the 2-isopropyl-6-methyl-4-hydroxy pyrimidine is subjected to accurately quantitativedetection and analysis by using an HP-FFAP capillary column and a gas chromatograph with a hydrogen flame ionization detector and adopting an internal standard method; data are stable and accurate, and the method is quick and convenient. A variable coefficient of the method is 0.42%, the recycling rate is 99.22 to 100.32%, and the retention time is 2.306 min.
Owner:JIANGSU TAIJIE INSPECTION TECH
A method for obtaining measured value of liquid chromatography inspection
The invention relates to a method for obtaining measurement values of liquid chromatography inspection, comprising the following steps: obtaining a first chromatographic outflow curve; obtaining a baseline from the first chromatographic outflow curve; The peak and valley values of the corresponding chromatographic peak; obtain and retain the first curve between the maximum slope point of the ascending section and the minimum slope point of the descending section of the chromatographic peak corresponding to the required component, and the first curve of the chromatographic peak The first rising curve is translated to obtain the second rising curve; in the same way, the first falling curve and the second falling curve are obtained, and then the first chromatographic peak is obtained; the content value of the required component is calculated according to the first chromatographic peak, and is obtained by the same method The content values of other components in the first chromatographic elution curve are obtained, and then the measured values are obtained from the content values of the required components and the content values of other components. The implementation of the measurement value acquisition method for liquid chromatography inspection of the present invention has the following beneficial effects: the introduced error is small.
Owner:SHENZHEN LIFOTRONIC TECH
Collection method and measurement method for alkali metals and compounds thereof in air in working place
ActiveCN103499654BLarge adsorption capacityImprove sampling efficiencyComponent separationWithdrawing sample devicesAbsorption capacityAlkali metal
The invention discloses a collection method for alkali metals and compounds thereof in air in a working place. The sampling can be finished by introducing the air in the working place into a sulfuric acid and methanesulfonic acid mixed aqueous solution which serves as an absorption medium. The collection method is simple, high in collection efficiency and high in absorption capacity. The invention also discloses a measurement method for the alkali metals and the compounds thereof in the air in the working place. The measurement method comprises the following steps of preparing a standard sequence of alkali metal ions; measuring a standard series, a sample and a blank reference solution through an ion chromatograph, drawing a standard curve, subtracting a response value measured by the sample into the standard curve to obtain the concentration of the alkali metal ions in the sample, and carrying out conversion to obtain the concentration of the alkali metals and the concentration of the compounds of the alkali metals in the air in the working place. According to the collection and measurement methods, various alkali metals and the compounds thereof can be simultaneously collected and measured through one-time sampling and under a chromatographic condition; the chromatographic measurement operation is simple; the stability is high; a result is reliable.
Owner:ZHEJIANG ACAD OF MEDICAL SCI
A kind of extraction method of galantamine in lycoris
Owner:邳州市滨河中小企业管理服务有限公司
Gas chromatography measurement method for hydrogen sulfide and carbonyl sulfide in crude synthesis gas
InactiveCN109975449ASolve the problem that carbonyl sulfide cannot be measured effectivelyImprove accuracyComponent separationGas chromatography measurementGas phase
The invention relates to a gas chromatography measurement method for hydrogen sulfide and carbonyl sulfide in a crude synthesis gas. The method includes the following steps that: (1) a Paropak Q filler and a Paropak N filler are weighed, and are mixed uniformly; (2) the Paropak Q filler and Paropak N filler are added to a chromatographic column; (3) chromatographic column aging is performed; and (4) chromatographic measurement is performed. The method of the invention has the advantages of low device cost, simple and convenient operation, high data accuracy and high repeatability. With the method adapted, total sulfur, namely the hydrogen sulfide and carbonyl sulfide in the crude synthesis gas can be measured; desulfurization treatment in a subsequent stage can be well guided; and the problem that an existing method fails to effectively measure carbonyl sulfide when applying a Paropak N chromatographic column can be solved.
Owner:INNER MONGOLIA YITAI COAL BASED NEW MATERIALS RES INST CO LTD
Four-dimensional measuring method of pulsating flame based on optical deflection tomography
InactiveCN104834015BRealize multiple perspectivesSolving Projection ReconstructionOptical detectionBeam splitterBack calculation
The invention relates to a pulse flame four-dimensional measurement method based on deflectometric chromatography. The method provided by the invention can be used to form a 4D-CT multi-visual angle projection ordered array deflection imaging system, and an optimal sampling angle can be determined according to structural characteristics of a detected flow field, and after beam expanding and collimation of a laser beam emitted by a laser source and spatial filtering, a beam splitter can be used for secondary beam splitting to generate a plurality of projection beams, and then a Moire deflection strip array can be generated. Based on the strip pattern processing technology of the wavefront reconstruction, the light deflection information of the projection strips can be extracted. The compressive sensing reconstruction algorithm based on the deflection angle correction reconstruction can be used for the back calculation, and the two-dimensional parameter distribution of different strip pattern cross sections can be acquired. By adopting the single threshold segmentation method for the threshold segmentation of the reconstructed two-dimensional temperature distribution, and adopting the Visualization Tool Kit technology based on the Marching Cubes surface drawing algorithm and the Ray Casting volume drawing algorithm, the three-dimensional volume data dynamic display of the pulse combustion flow field and the flame structure can be realized.
Owner:QINGDAO UNIV OF SCI & TECH
Method for operating electrical equipment and electrical equipment
ActiveCN104756217BAnalysis by subjecting material to chemical reactionColor/spectral properties measurementsElectrical devicesDielectric breakdown strength
Methods and apparatus for operating fluid-insulated electrical equipment (1) are disclosed. An insulating fluid (10) of an electrical device (1) comprises at least two fluid components (A, B), which are a priori components of the insulating fluid (10). The method comprises the step of performing at least one optical measurement and / or at least one gas chromatographic measurement of the insulating fluid (10). Using this or these measurements or at least one additional measurement of the insulating fluid (10), a first concentration (cA) of the first fluid component (A) and a second concentration (cB) of the second fluid component (B) are derived . The operating state (O) of the electrical device (1) is then derived using the first concentration (cA) and the second concentration (cB) and advantageously the dielectric breakdown strength Ebd of the insulating fluid (10).
Owner:HITACHI ENERGY SWITZERLAND AG
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