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Internal slag heat current inspector and inspection for continuously-casting crystallizer
InactiveCN1940547AAccurately reflect heat transferGood test reproducibilityMaterial thermal conductivityMaterial heat developmentFurnace temperatureHeat current
A method for detecting heat flow of slag diaphragm in continuous casting crystallizer includes adding 250g-500g slag sample when furnace temperature is at 1250-1350deg.c and holding temperature for 5-10min when furnace temperature is on 1400deg.c, obtaining temperature-time relation curve by measuring temperature variation of cooling water passing through metal probe to know density variation state of heat flow passing through slag diaphragm at different time. The device used for realizing said method is also disclosed.
Owner:CHONGQING UNIV
Method for detecting physical and chemical indexes of reconstituted tobacco extracting solution and tobacco extracting paste by near infrared spectrum detection paper making method
InactiveCN101710072ARapid determination of chemical compositionRapid determination of propertiesColor/spectral properties measurementsInfraredQuantitative model
The invention relates to a method for detecting physical and chemical indexes of a reconstituted tobacco extracting solution and a tobacco extracting paste by a near infrared spectrum detection paper making method, which comprises the following steps of: carrying out the detection of the physical and chemical indexes on collected samples one by one by a standard method to obtain quantitative reference data; scanning and collecting spectrums of all the samples, carrying out spectrum preprocessing for eliminating the influence of noise and baseline drift; then corresponding spectrum data to the reference data of all physical and chemical indexes obtained by the standard method one to one and establishing a quantitative model by a partial least square method and mutual verification; carrying out accuracy and reproducibility inspection and then storing the quantitative model in a computer. When the physical and chemical component content of the reconstituted tobacco extracting solution and tobacco extracting paste samples to be detected needs to be detected, the near infrared spectrum data of the samples to be detected are scanned and collected, and the physical and chemical indexes of the reconstituted tobacco extracting solution and the tobacco extracting paste in the paper making method can be detected by calling the analysis of the quantitative model. The method has rapid and accurate detection and low analyzing cost without damaging the analyzing samples and pollution.
Owner:CHINA TOBACCO YUNNAN REMFG TOBACCO CO LTD +1
Method for distinguishing paper process reconstituted tobacco products via near infrared spectroscopy in combination with PLS-DA
InactiveCN104596981AThe detection process is fastNo pollution in the processMaterial analysis by optical meansBiochemical engineeringFt ir spectra
The invention relates to a method for distinguishing paper process reconstituted tobacco products via near infrared spectroscopy in combination with PLS-DA, belonging to the technical field of paper process reconstituted tobacco. The method mainly comprises the following steps: (1) collecting and preparing flaky samples; (2) scanning the spectrum; (3) pre-treating the spectrum; (4) detecting and removing an abnormal value; and (5) establishing and verifying a PLS-DA model. A classification model of reconstituted tobacco products is established by near infrared technology in combination with PLS-DA, and has the advantages of high detection speed, high classification accuracy, high classification efficiency and the like and is used for quickly classifying reconstituted tobacco products with different shop signs, and the established classification model has good classification ability and has important significance on primary online monitoring of quality stability of the reconstituted tobacco products.
Owner:CHINA TOBACCO YUNNAN IND
Method for enhancing surface property of montmorillonite by freeze-drying technology
PendingCN109824057AIncrease spacingNo lossNanotechnologySilicon compoundsFreeze-dryingMontmorillonite
The invention discloses a method for enhancing the surface property of montmorillonite by a freeze-drying technology. According to the method, the dispersing property of the montmorillonite is improved by utilizing the freeze-drying technology, and then surface modification is carried out to enhance the surface property of the layered montmorillonite. The montmorillonite with good dispersibility is obtained by vacuum freeze-drying. The freeze-dried montmorillonite dispersed under optimized conditions is obtained by controlling the stirring speed, the dispersing degree and the freeze-drying time of the montmorillonite in water. The freeze-dried montmorillonite is subjected to dopamine surface modification to obtain modified montmorillonite. The method disclosed by the invention has the characteristics of simplicity in operation, good test reproducibility, high efficiency and the like; the layered montmorillonite with functional groups on the surface can be obtained, and a new way for solving the dispersibility and functionalization of inorganic montmorillonite and improving the compatibility of the montmorillonite and organic matters is provided.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Sample for welding crack sensitivity test and welding crack sensitivity test method
InactiveCN110508966AEvaluation of cold cracking susceptibilityGuaranteed accuracyWelding apparatusHeat-affected zoneEngineering
The invention discloses a sample for a welding crack sensitivity test. The sample comprises a rectangular sample body, the sample body is provided with long edges and wide edges and is provided with aplurality of first slots extending from the long edges to the middle portion of the sample, the first slots are vertically arranged relative to the long edges, separation distances between the multiple first slots in pairs are equal, a center line in the width direction of the sample is further provided with a welding groove extending in the length direction of the sample, and the cross-sectionalshape of the welding groove is a'y'type. The invention further discloses a welding crack sensitivity test method which performs the welding crack sensitivity test adopting the sample for the weldingcrack sensitivity test. According to the welding crack sensitivity test method, because the sample with the cross-sectional shape of the welding groove being the'y'type, a welding seam root portion notch points to a heat-affected area, cracks craze and extend to the heat-affected area preferentially, and quantitative testing and evaluating can be performed on the cold cracking sensitivity of the welding heat-affected area of a plate material.
Owner:BAOSHAN IRON & STEEL CO LTD
Device and method for testing pull torque
InactiveCN103344492AHeight adjustableReliable test resultsMaterial strength using tensile/compressive forcesMaterial strength using steady torsional forcesTest powerPull force
The invention relates to a device for testing the pull torque, and the device comprises a pull torque test platform, a power line fixing device, a weight assembly and a lifting rotary device. The power line fixing device is arranged at the upper end of the pull torque test platform, while the lifting rotary device is arranged at the lower end of the pull torque test platform. A to-be-tested power line is fixed on the pull torque test platform via the power line fixing device. The operation method comprises the following steps: configuring the weight of the weight assembly according to the pressure to be applied, connecting the configured weight assembly with the power line, and placing the weight assembly connected with the power line on the lifting rotary device; rotating the lifting rotary device as required by the test to enable the power line at a required to-be-tested state; reciprocating the lifting rotary device to finish multiple times of pull torque tests of the power line at the to-be-tested state. The device is simple in operation and good in test reproducibility by using weight for testing. Meanwhile, the test tension and torque are applied more uniformly.
Owner:ELECTROMECHANICAL PRODS DETECTING TECH CENT OF SHANGHAI ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Method for measuring cellulose of reconstituted tobacco by virtue of near infrared reflectance spectroscopy technique
InactiveCN104596979AQuick checkRapid detection technology not only improves analysisMaterial analysis by optical meansCelluloseReflectance spectroscopy
The invention discloses a method for measuring cellulose of a reconstituted tobacco by virtue of a near infrared reflectance spectroscopy technique. The method comprises the following steps: (1) collecting and preparing a representative sample; (2) collecting an original spectrum; (3) selecting a correcting sample set and a verifying sample set; (4) measuring a reference value of the sample; (5) carrying out pretreatment on spectrum; (6) establishing a PLC model; (7) verifying the model; and (8) measuring cellulose. The method disclosed by the invention is simple, feasible and fast. By adopting a near infrared spectrum nondestructive detection technology, not only can the analytical efficiency be enhanced and the cost be lowered, but the method also has obvious practicality for accurately measuring the cellulose of the reconstituted tobacco, improving the detection efficiency and objectively reflecting the product quality. The method disclosed by the invention has the advantages of high detection speed, no pollution, greenness and environmental protection, high accuracy, good repeatability and the like, and is suitable for on-site analysis and fast detection of the cellulose of a reconstituted tobacco product as well as online monitoring of fluctuation of product quality.
Owner:CHINA TOBACCO YUNNAN IND
Method for measuring paper process reconstituted tobacco filling value via near infrared diffuse reflection spectroscopy
InactiveCN104596974AQuick checkRapid detection technology not only improves analysisMaterial analysis by optical meansNon destructiveReflectance spectroscopy
The invention discloses a method for measuring paper process reconstituted tobacco filling value via near infrared diffuse reflection spectroscopy. The method comprises the following steps: (1) collecting samples; (2) collecting an original spectrum; (3) selecting a correction sample set and a validation sample set; (4) determining a sample reference value; (5) pre-processing the spectrum; (6) establishing a PLS model; (7) verifying the model; and (8) measuring the filling value. The method disclosed by the invention is simple, feasible and fast, the near infrared spectrum non-destructive testing technology can be used for not only improving the analysis efficiency and saving the cost, but also has obvious practicability of accurately measuring the reconstituted tobacco filling value, improving the detection efficiency and objectively reflecting the product quality. The method disclosed by the invention has the advantages of fast detection speed, no pollution, environmental protection, high accuracy and good reproducibility, and is suitable for onsite analysis and fast detection of the reconstituted tobacco filling value and online monitoring of product quality fluctuation.
Owner:CHINA TOBACCO YUNNAN IND
Method for determining tensile strength of reproduced tobacco leaves of papermaking method by near-infrared diffuse reflection spectrum
InactiveCN104568828AQuality improvementNo pollution in the processMaterial analysis by optical meansReflectance spectroscopyPapermaking
The invention discloses a method for determining the tensile strength of reproduced tobacco leaves of a papermaking method by a near-infrared diffuse reflection spectrum. The method comprises the following steps: (1) collecting and preparing a sheet-shaped sample with representativeness; (2) collecting an original spectrum; (3) selecting a correction sample set and a verification sample set; (4) determining a sample reference value; (5) pre-treating the spectrum; (6) establishing a PLS model; (7) verifying the model; and (8) determining the tensile strength. The method disclosed by the invention is simple, feasible and rapid; the analysis efficiency can be improved and the cost is saved by adopting a near-infrared spectrum nondestructive testing technology; the detection efficiency for accurately determining the tensile strength of the reproduced tobacco leaves is improved; and the product quality is objectively reflected and the practicability is obvious. The method has the advantages of rapid detection speed, no pollution, greenness and environmental pollution, high accuracy, good repeatability and the like, and is suitable for field analysis and rapid detection of the tensile strength of the reproduced tobacco leaf products, and online monitoring of the fluctuation of the product quality.
Owner:CHINA TOBACCO YUNNAN IND
Simulated soil solution test apparatus and method for evaluating toxicity of pollutants to earthworms
InactiveCN105136797AGood test reproducibilityHigh sensitivityMaterial analysis by optical meansIntestinal structureEcological risk
The invention relates to a simulated soil solution test apparatus and method for evaluating toxicity of pollutants to earthworms. The apparatus includes light transmitting and watertight incubators, each incubator is internally provided with a monitoring device, and the incubators are connected to an oxygen supply device. The method consists of: preparing a simulated solution containing the main components of a soil solution; adding environmental pollutants of different concentrations into the simulated solution, and conducting numbering respectively, and also taking a simulated solution without adding of environmental pollutants as the experimental control; adding the environmental pollutants added simulated solutions with different numbers into different incubators, putting intestine cleared earthworms into the incubators, and exposing the earthworms in the solutions completely; and introducing oxygen into the cubators through an oxygen supply device, and observing and recording the behavior reaction and fatality rate of the earthworms in different environmental pollutants' simulated solutions within a certain period of time through cameras. The test apparatus provided by the invention has the advantages of simplicity, good test reproducibility and high monitoring sensitivity, etc., thus having broad application prospects in the field of contaminated soil ecological risk assessment.
Owner:FUJIAN AGRI & FORESTRY UNIV
Method for measuring pectin of paper-making reconstituted tobacco by near-infrared diffuse reflection spectrum technology
InactiveCN104596982AAvoid damageThe detection process is fastMaterial analysis by optical meansProcess engineeringDiffuse reflection
The invention relates to a method for measuring the pectin content of paper-making reconstituted tobacco by a near-infrared diffuse reflection spectrum technology, belonging to the technical field of paper-making reconstituted tobacco. The method mainly comprises the following steps: (1) collecting a sample; (2) acquiring the original spectrum; (3) measuring the reference value of the sample; (4) selecting and pretreating a calibration sample set and a verification sample set; (5) establishing a point-line-surface (PLS) conceptual model; and (6) carrying out model validation. According to the method, the PLS conceptual model for measuring the pectin content of the paper-making reconstituted tobacco products is established by the near-infrared technology; the method has the advantages of being rapid in detection speed, high in accuracy, good in reproducibility and the like, and has an important assisting function for the researches such as reducing the tar and harmful components of cigarette products, improving smoking quality, etc.
Owner:CHINA TOBACCO YUNNAN IND
Method for predicating length of pinus taeda wood fibers by using near infrared spectrum technology
InactiveCN104132910AHarm reductionLow costMaterial analysis by optical meansFiberNondestructive analysis
The invention discloses a method for predicating the length of pinus taeda wood fibers by using a near infrared spectrum technology. According to the method, a predication model for the length of the pinus taeda wood fibers is established based on the near infrared spectrum technology and is used for rapidly and accurately determining the length of the pinus taeda wood fibers. Due to the establishment of the predication model for the length of the pinus taeda wood fibers based on the near infrared spectrum technology, the defects that determination steps are complicated, the procedure is complicated, a manual operation error is great, the cost is high and the like in a previous conventional determination method are overcome; according to the technology, chemicals cannot be wasted, and the harms of the chemicals to a human body are alleviated; a sample is not consumed in a measurement process and the influences on the sample are not generated from the appearance to the inside, so that the measurement is typical nondestructive analysis measurement; according to the method, the measurement repeatability is good, the analysis efficiency is high and the result stability is good. The invention provides a rapid, simple, accurate, lossless and low-cost testing method for improved variety selection of pinus taeda in China.
Owner:SOUTH CHINA AGRI UNIV
Microfluidic chip for quick detection of enzyme-linked immunoassay
The invention discloses a microfluidic chip for quick detection of enzyme-linked immunoassay. The microfluidic chip comprises a first chip layer and a second chip layer, at least one detection channelis distributed in the first chip layer, each detection channel is provided with a first sample inlet port, a second sample inlet port and a sample outlet port, and the second sample inlet port is located between the sample outlet port and the first sample inlet port; the second chip layer can move relative to the first chip layer, and a third sample inlet port and a fourth sample inlet port are formed in the second chip layer; when the second chip layer is at the first location, the third sample inlet port is communicated with the first sample inlet port, and the fourth sample inlet port is not communicated with the second sample inlet port; when the second chip layer is at the second location, the third sample inlet port is not communicated with the first sample inlet port, and the fourth sample inlet port is communicated with the second sample inlet port. By the arrangement, the amount of samples used for detection is greatly reduced, and after pretreating and adding of to-be-detected samples for incubation, results can be analyzed quickly by further adding a detection reagent.
Owner:MITASCHIP CO LTD
Method for measuring heavy metal content of oyster based on hyperspectral image technology
InactiveCN109900645ASimple and efficient operationGood test reproducibilityCharacter and pattern recognitionColor/spectral properties measurementsIon contentImaging technology
The invention provides a method for measuring the heavy metal content of the oyster based on the hyperspectral image technology. The method comprises: preparing a heavy metal contaminated sample; collecting a hyperspectral image of the heavy metal contaminated sample by a hyperspectral image acquisition system; carrying out spectral data extraction and pretreatment; acquiring a heavy metal ion sensitive characteristic band subset; constructing a heavy metal ion content measurement model based on an extreme learning machine; and inputting hyperspectral data of a to-be-measured oyster sample into the heavy metal ion content measurement model and outputting measurement of the oyster heavy metal content. According to the provided method, the heavy metal ion sensitive characteristic band subsetis extracted and the heavy metal ion content measurement model is constructed to detect the heavy metal contamination content of the oyster. During the detection process, complicated pretreatment ofthe sample is avoided; and during the analysis process, no chemical reagent for assistance is required, so that the environment is protected from being polluted. And the complex pollution of several kinds of heavy metal can be analyzed simultaneously.
Owner:LINGNAN NORMAL UNIV
Method for quantitatively detecting content of protein in protein viscose
InactiveCN104020075AReduce pollutionGood test reproducibilityWeighing by removing componentWater bathsBottle
The invention relates to a method for quantitatively detecting the content of protein in protein viscose. The method comprises the following steps: (1) arranging a test sample in a measuring bottle, and transferring the dried test sample to a constant weight into a conical flask with a stopper; (2) diluting a well-calibrated sodium hypochlorite stock solution to given concentration, arranging the diluted sodium hypochlorite stock solution into the conical flask with the stopper, covering a bottle cover, oscillating the moistened test sample, and arranging the test sample into a constant-temperature oscillation water-bath pot and oscillating at a given temperature; transferring residues into a glass sand core crucible with known drying mass, and washing the residues by utilizing the sodium hypochlorite sodium solution, tertiary water and dilute acetic acid respectively; (3) calculating the content of the protein according to the reduced mass of the protein viscose test sample before and after being processed by sodium hypochlorite. By adopting the method, the weaknesses that the test period is long, the danger in operation is high, toxic and harmful gas is likely to generate, and the like in the classical kjeldah method for measuring the content of the protein can be overcome. The method has the advantages of good test reproducibility, simplicity in operation, accuracy conforming to the analysis requirement, slight environmental pollution and the like.
Owner:SHANGHAI WEAVING SCIENCE RESEARCH INSTITUTE CO LTD +1
Method for fast detecting indexes of white granulated sugar through near infrared spectrum
InactiveCN106018329ASolve the disadvantages of analytical detectionNo damageMaterial analysis by optical meansInfraredMetrology
The invention belongs to the technologies in the technical field of saccharose detection, and particularly relates to a method for fast detecting indexes of white granulated sugar through a near infrared spectrum. A near-infrared spectrograph is utilized for measuring the near infrared spectrum of a sample, measured spectroscopic data is processed through the chemometric technology, a white granulated sugar index calibration model is set up according to the processed spectroscopic data of the calibration set sample and the chemometric technology for white granulated sugar index reference values of the spectroscopic data, the performance of the white granulated sugar index calibration model is evaluated through a verification set sample, and the set-up calibration model is used for predicting the unknown indexes of the white granulated sugar. When the method is used for detecting the indexes of the white granulated sugar, no chemical reagent is needed, manual intervention is not needed, the advantages of being fast and accurate are achieved, high stability is achieved, and the important parameters such as the color value, turbidity, sugar and moisture of the white granulated sugar can be obtained within 5 min.
Owner:GUANGXI UNIV
Ophiocordyceps xuefengensis stroma and artificial cultivation method thereof
ActiveCN107012100AEasy to operateEasy to get materialsFungiMicroorganism based processesOphiocordyceps xuefengensisMicrobiology
The invention relates to an ophiocordyceps xuefengensis stroma and an artificial cultivation method thereof. The method comprises the following steps: performing tissue separation for a culture, a wild culture or a stroma obtained after successful cultivation of the culture, inoculating into a slant culture medium, preparing a slant mother strain, then inoculating the slant mother strain into a liquid culture medium, preparing a primary culture, inoculating the primary culture into the liquid culture medium to prepare a spawn, and culturing the spawn in a culture medium for production to obtain the artificially-cultivated ophiocordyceps xuefengensis stroma. The ophiocordyceps xuefengensis stroma and the artificial cultivation method thereof have advantages of simplicity in operation, low cost, experimental reproducibility and the like, are suitable for mass production and have wide development prospect.
Owner:湖南省中医药研究院
Multifunctional gastrointestinal surgical examination and treatment instrument
InactiveCN107913084ARelieve painGood treatment effectImage enhancementImage analysisMedical equipmentTherapeutic effect
The invention belongs to the field of medical equipment, and discloses a multifunctional gastrointestinal surgical examination and treatment instrument which comprises a treatment instrument ring, anexamination and treatment plate, a camera, a stethoscope, a controller, a CPU-Z processor, a distance sensor, an ultrasonic treatment instrument, a headrest, a small massage ball, a magnetic treatmentring, a bed surface, a guide rail, a bed, a bed cushion and a bed support. The treatment instrument ring is placed on the ground, the examination and treatment plate is embedded into the top of the inner side of the treatment instrument ring, and the camera and the stethoscope are embedded into the left of the top of the inner side of the treatment instrument ring. The controller controls a linear motor to move front and back on the surface of a sliding rail, the examination and treatment plate can be manually controlled to automatically reach an affected part and perform diagnosis and treatment, the ultrasonic treatment instrument is used for examination, and the pain of a patient is greatly decreased. The multifunctional gastrointestinal surgical examination and treatment instrument isgood in treatment effect and quite worthy of popularization and use, and achieves the purpose of examination and treatment integration.
Owner:QINGDAO CENT HOSPITAL
Construction and detection method of calibration model for determining content of effective components in compound liquorice tablet
PendingCN111380832AImprove applicabilityImprove correlationMaterial analysis by optical meansNear infrared lightFluid phase
The invention provides a construction and detection method of a calibration model for determining the content of effective components in a compound liquorice tablet. The construction method comprisesthe following steps: taking a plurality of compound liquorice tablet samples as a calibration set, and performing near-infrared light scanning to obtain original spectral data of the calibration set;carrying out spectrum preprocessing on the original spectrum data of the calibration set, and selecting a modeling waveband of the effective component to obtain a content characteristic spectrum of the effective component; respectively determining the effective components of a plurality of compound liquorice tablet samples contained in the calibration set by adopting a high performance liquid chromatography to obtain the true content value of the effective components; and associating the obtained content characteristic spectrum with the content true value by using a partial least square method, and establishing a content correction model of the effective component. When the content correction model is used for detecting the content of glycyrrhizic acid in the compound liquorice tablet, background noise and physical factor dryness can be effectively eliminated, the prediction capability is good, and the detection result is accurate; meanwhile, the content correction model also has verystrong applicability.
Owner:GUANGZHOU BAIYUSN GUANGHUA PHARMA
Small-size closed chamber for measuring evaporative emission of fuel of motorcycle
InactiveCN105784922AImprove air tightnessThe test data is accurateMaterial analysisTemperature controlFuel tank
The invention discloses a small-size closed chamber for measuring evaporative emission of fuel of a motorcycle.The small-size closed chamber comprises a closed chamber box body, gas collection bags, a temperature control device, a hydrogen flame ionization type hydrocarbon analyzer, a pressure adjusting device, a circulation air duct, a fuel tank heating system, a rack and a control platform; a suspended ceiling is arranged at the ceiling of the closed chamber box body, and the gas collection bags are placed on the suspended ceiling; the closed chamber box body is a cubic box body, the circulation air duct and the temperature control device are fixed to the back side of the closed chamber box body, and circulating fans are mounted in the circulation air duct.The closed chamber is good in air-tightness, accurate in measured data and good in test reproducibility.Meanwhile, the closed chamber fully takes particularity of a measured object and price acceptable to domestic enterprises into consideration, on the premise that relevant test laws and regulations are met, independent design and development are conducted, equipment cost is greatly lowered, the engineering purpose of miniaturizing a fuel evaporation closed chamber is achieved, and the closed chamber can meet requirements of national standards.
Owner:CHINA TIANBO
A kind of Cordyceps xuefeng and its artificial cultivation method
ActiveCN107012100BEasy to operateEasy to get materialsFungiMicroorganism based processesBiotechnologyOphiocordyceps xuefengensis
The invention relates to an ophiocordyceps xuefengensis stroma and an artificial cultivation method thereof. The method comprises the following steps: performing tissue separation for a culture, a wild culture or a stroma obtained after successful cultivation of the culture, inoculating into a slant culture medium, preparing a slant mother strain, then inoculating the slant mother strain into a liquid culture medium, preparing a primary culture, inoculating the primary culture into the liquid culture medium to prepare a spawn, and culturing the spawn in a culture medium for production to obtain the artificially-cultivated ophiocordyceps xuefengensis stroma. The ophiocordyceps xuefengensis stroma and the artificial cultivation method thereof have advantages of simplicity in operation, low cost, experimental reproducibility and the like, are suitable for mass production and have wide development prospect.
Owner:湖南省中医药研究院
Measuring method and device of spectrometer while drilling for measuring oil and gas composition
InactiveCN105156092BAvoid missingFast analysisSurveyColor/spectral properties measurementsThermopileSemiconductor chip
The invention relates to a measuring method and device of a spectrometer while drilling for measuring oil and gas components. It includes a parabolic reflector for collimating the luminous point of the light source, and is characterized in that a sampling gas chamber and a reference gas chamber and a detector with four channels and four independent thermopiles are arranged behind the reflector, and each channel is equipped with one Filters and transmission windows, and detectors are installed on semiconductor cooling chips. This patent mainly has the following advantages: fast analysis speed; low analysis cost; good test reproducibility; online analysis, through the current mature downhole signal transmission technology; small size, especially small cross-section, easy to integrate into drilling while drilling In the equipment; low power consumption; the driving current of the new infrared radiation light source is only about 100mA, considering the pulse width modulation of 20‑50% duty cycle, the actual power is even lower.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Asphalt mixture pressure type permeameter and method for measuring permeability
InactiveCN102590062BShorten test timeImprove experimental efficiencyPermeability/surface area analysisInlet valveEngineering
An asphalt mixture pressure type permeameter comprises a controller air storage sac, wherein the air inlet end of the air storage sac is communicated with an air-filling device through an electromagnetic air inlet valve which is installed on a guide pipe, the air outlet end of the air storage sac is communicated with a sealing cover through an electromagnetic air outlet valve which is installed on the guide pipe, the electromagnetic air inlet valve and the electromagnetic air outlet valve are connected with a controller through leads, and a pressure sensor which is connected with the controller through the lead is arranged on the side wall of the air storage sac. The asphalt mixture pressure type permeameter further comprises a timing device and a counter weight which is arranged on the edge of the sealing cover. Air is taken as medium, the controller controls the air inlet valve and the air outlet valve of the air storage sac, so the compressed air passes by an asphalt mixture test piece which is linked with the sealing cover, the pressure sensor sends the pressure signal to the controller, the controller converts the pressure signal into time signal, the timing device displays the time for reducing the air storage sac from one fixing air pressure to another fixing air pressure, so the permeability of the test piece is measured, the test time is greatly shortened, the efficiency is high, and water resources are saved.
Owner:CHANGAN UNIV
Chlorosilane pretreatment method
The invention discloses a chlorosilane pretreatment method, which comprises the following steps: S1, a rectified solution in a polycrystalline silicon production process is subjected to extraction ofa sample liquid; S2, the sample liquid is transferred to a centrifugal tube; S3, the centrifugal tube is placed in a centrifuge; S4, the centrifuge is started for centrifugation; S5, the supernatant liquid in the centrifugal tube after centrifugation is taken; and S6, the supernatant liquid is taken to be analyzed by using a chromatograph. According to the chlorosilane pretreatment method disclosed in the invention, spare part consumption of an injection needle, an injection system and a separation system of a gas chromatography instrument is reduced, and the cost is saved. Through the technology, production analysis data can be effectively provided, production is effectively guided, and a clear judgment basis is provided for the composition content of a dirty material.
Owner:内蒙古通威高纯晶硅有限公司
Method for predicting density of wood component by using moth damage information
InactiveCN108776079AHarm reductionOvercome timeSpecific gravity measurementHuman bodyNondestructive analysis
The invention provides a prediction model for predicting the density of a wood component by using moth damage information. The model is used to realize the rapid and accurate detection of the basic density of the wood, and provides a fast, accurate, simple and cheap method for the large-scale detection of the material property parameters of wood, so the genetic variation law of the material properties of the wood can be comprehensively known, the great potential of the wood is disclosed, accurate selection can be carried out, studies on the correlation among material property factors of the wood and among the material property factors, a growth factor and a form factor in China are enriched, and the process of genetic improvement of the wood is actually important. The establishment of thebasic density model of the moth damaged wood component overcomes the shortcomings, comprising long detection time, large human operating error and high cost, of conventional detection methods. The method has the advantages of no consumption of chemicals, reduction of harms of the chemicals to human bodies, typical nondestructive analysis measurement, good test reproducibility, high analysis efficiency and good result stability.
Owner:SHANGHAI JIANWEI CULTURAL HERITAGE CONSERVATION TECH CO LTD
Internal slag heat current inspector and inspection method for continuously-casting crystallizer
InactiveCN100495006CAccurately reflect heat transferGood test reproducibilityMaterial thermal conductivityMaterial heat developmentFurnace temperatureHeat current
A method for detecting heat flow of slag diaphragm in continuous casting crystallizer includes adding 250g-500g slag sample when furnace temperature is at 1250-1350deg.c and holding temperature for 5-10min when furnace temperature is on 1400deg.c, obtaining temperature-time relation curve by measuring temperature variation of cooling water passing through metal probe to know density variation state of heat flow passing through slag diaphragm at different time. The device used for realizing said method is also disclosed.
Owner:CHONGQING UNIV
Method for preparing 2, 6-dichloro-5-fluorine nicotinoyl ethyl acetate
ActiveCN101774967BImprove conversion rateAvoid hydrolysis side reactionsOrganic chemistryZinc bromideSolvent
Owner:CHANGZHOU YINSHENG PHARMA +1
Rock debris type identification method and system, storage medium and equipment
PendingCN112378896AImprove efficiencyHigh speedAnalysis by thermal excitationFrequency spectrumHigh energy
The invention relates to a rock debris type identification method, and the method is characterized in that the method comprises the following steps: obtaining a laser-induced breakdown spectrum wavelet transform coefficient of a standard rock debris sample and frequency spectrum data of a photoacoustic signal through pulse high-energy laser, and constructing a rock debris type prediction model byusing the laser-induced breakdown spectrum wavelet transform coefficient and the frequency spectrum data as input signals; obtaining a laser-induced breakdown spectroscopy wavelet transform coefficient of the rock debris sample to be detected and spectral data of the photoacoustic signal by using the same method, and obtaining an identification result of the type of the rock debris sample to be detected by using the constructed rock debris type prediction model. The method has the advantages that two signals generated when the pulse high-energy laser irradiates the rock debris are fully utilized, the two signals are combined, the type of the rock debris to be tested can be accurately obtained, and the method has the advantages of being high in speed, high in efficiency, low in cost, good in test reproducibility, capable of achieving online analysis and the like.
Owner:YANGTZE UNIVERSITY
Microcoulomb analysis method for chlorinity high-temperature burning of organic phosphate fire-resistant oil and device thereof
ActiveCN101571507BReduce usageSimple and fast operationSpecial data processing applicationsMaterial electrochemical variablesPhosphateEngineering
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
Microfluidic chip for rapid detection of ELISA and its pretreatment and detection method
ActiveCN106513062BAvoid complexitySimple structureMaterial analysis by observing effect on chemical indicatorLaboratory glasswaresPre treatmentEnzyme
The invention discloses an enzyme-linked immune rapid detection microfluidic chip and a pretreatment and detection method thereof. The microfluidic chip includes a first chip layer and a second chip layer; at least one detection channel is distributed in the first chip layer and is provided with a first sample inlet, a second sample inlet and a sample outlet, and the second sample inlet is located between the sample outlet and the first sample inlet; the second chip layer can move relative to the first chip layer and is provided with a third sample inlet and a fourth sample inlet, and conditions are met: when the second chip layer is at a first position, the third sample inlet communicates with the first sample inlet, and the fourth sample inlet does not communicate with the second sample inlet; and when the second chip layer is at a second position, the third sample inlet does not communicate with the first sample inlet, and the fourth sample inlet communicates with the second sample inlet. The amount of detection used samples is greatly reduced; after pretreatment, after a to-be-detected sample is incubated, a detection reagent is added and a result can be quickly analyzed.
Owner:SUZHOU WENHAO MICROFLUIDIC TECH CO LTD
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