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2597results about How to "Meet testing needs" patented technology

Method for determining multiresidue of veterinary drugs in animal-derived foods

The invention belongs to the technical field of food detection methods, and particularly relates to a method for determining multiresidue of veterinary drugs in animal-derived foods. The method comprises the following steps of weighing a sample, adding an acetic acid-acetonitrile solution, carrying out vibrating extraction, centrifuging to obtain acetonitrile extracting solution, loading the extracting solution obtained by centrifuging into a centrifuge tube with a mixed filler, carrying out vibrating centrifugation, sucking purified liquid, concentrating by blowing nitrogen, diluting to constant volume and detecting by UPLC / MS / MS (ultra performance liquid chromatography-tandem mass spectrometry). The method disclosed by the invention is firstly applied in detecting animal-derived foods and 107 kinds of veterinary drugs such as sulfonamides, quinolones, beta agonists in animal products are subjected to fast qualitative and quantitative detection, the detection limit is completely capable of meeting the detection requirements and the detection efficiency is greatly promoted.
Owner:烟台杰科检测服务有限公司

Automatic test system for digital integrated circuit

The invention discloses an automatic test system for a digital integrated circuit. The automatic test system is composed of a tested chip, a test interface board, an integration module, a test module, a control module, a display module and an upper computer. The control module is connected with the upper computer. The test module is connected with the control module. A base pin of the tested chip is connected with the test interface board which is connected with the test module. The integration module is connected with the test module and the upper computer. The display module is connected with the control module and displays a waveform after final comparison by the aid of upper computer software, so that the automatic test for functions and performance of the chip is completed. The automatic test system is low in cost, easy to implement under laboratory conditions, easy and convenient to operate, high in development rate and capable of meeting the test requirements of small-batch products. According to the system, through an automatic test, the problem that operation is complex due to the fact that the number of test items is large in a manual test is solved, the test efficiency is enhanced, a misjudgment caused by artificial factors in the manual test is avoided, and therefore test quality is improved.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI

Railway fastener abnormality detection system based on monocular vision and laser speckles

PendingCN107688024ADoes not increase imaging frame rateAdd Artificial TextureOptically investigating flaws/contaminationRailway auxillary equipmentEngineeringCarriage
The invention discloses a railway fastener abnormality detection system based on monocular vision and laser speckles. The railway fastener abnormality detection system is used for detecting whether fasteners are abnormal or not and comprises laser speckle projectors, area array cameras, a wheel encoder, an RFID detector and an industrial personal computer, wherein the laser speckle projectors andthe area array cameras are arranged above a bottom sleeper of a train body, the laser speckle projectors are positioned right above the fasteners and project laser speckles towards fastener areas perpendicularly, the wheel encoder is fixed on a rotating shaft of a wheel and connected with the area array cameras, the RFID detector is fixed below the train body, and the industrial personnel computerpositioned in a carriage is connected with the area array cameras, the wheel encoder and the RFID detector. The railway fastener abnormality detection system has the advantages that with mottled grains on the surfaces of the fasteners increased through the laser speckle projectors, image block matching precision can be improved and the three-dimensional topography of the fasteners is constructedaccurately, so that various abnormalities of different types of fasteners can be detected effectively.
Owner:成都精工华耀科技有限公司

Method for determining in situ injection repair diffusion radiuses of contaminated soil and underground water

The invention discloses a method for determining in situ injection repair diffusion radiuses of contaminated soil and underground water. According to the method, points are distributed according to a triangle method, pitch-row is designed to be perpendicular to the flowing direction of the underground water, array pitch is in the flowing direction of the underground water, and the flow expansion of a repair reagent in the underground water within the reaction effective time is taken into account. The method comprises three steps: firstly, observation method: the repair reagent and a definite proportion of bromide ion serving as tracers are simultaneously injected into an aqueous stratum in the condition of high pressure whirl spraying injection. The diffusion of the reagent is judged by observing the phenomena of grout return and grout leaking between adjacent injection points; secondly, bromide ion tracer method: after the completion of injection, underground water depth setting rapid sampling is performed, the concentration of the tracers is rapidly detected in field, and the concentration of the bromide ion in the underground water is compared with a background value; thirdly, bromide ion tracer method and observation method: the optimum diffusion radiuses are determined through synthetic judgment. The method is applied to optimal design of diffusion radiuses and hole arrangement parameters and monitoring of injection effect in soil and underground water in situ injection tests and repair construction.
Owner:BCEG ENVIRONMENTAL REMEDIATION CO LTD

Protective system for lithium ion battery

The invention discloses a protective system for lithium ion cells. The system comprises a signal acquisition unit and a control unit, wherein the signal acquisition unit comprises a protective chip and a voltage detection unit, and the control unit comprises a singlechip and a switch unit. The voltage detection unit is connected with a lithium iron cell. The protective chip detects the voltage of the lithium ion cell through the voltage detection unit. The singlechip reads a voltage value detected by the protective chip through a communication interface of the protective chip and switches off and on a charging and discharging circuit through a control switch unit according to the set range of the voltage value. The system adopts a form of the protective chip and the singlechip to protect the lithium ion cell, enlarges a detection range through the protection chip, provides flexible protection parameter set through the singlechip, and is a protective system applicable to various lithium ion cells.
Owner:SHENZHEN BAK BATTERY CO LTD

Matrix-model-based software testing method

The invention discloses a matrix-model-based software testing method. The matrix-model-based software testing method comprises the following steps: a) dividing a software system according to function modules; b) splitting and combining the function modules to form layer-level function test points; c) establishing a test case set by structuring a covering matrix for all layer-level function test points, so that each valid value of any pair of input parameters in each level of function test point is coated with at least one test case, wherein in the step c), for the function test point with less than or equal to three input parameters and valid values, the two-coverage test case set is directly established by Latin square. In the matrix-model-based software testing method, by extracting the function test points and matrixing the function test points, the optimal test case set is obtained through matrix calculation, so that the coverage rate, the testing efficiency and the testing accuracy can be improved all around, a testing need of a large software system can be met and the testing cost can be reduced.
Owner:上海新炬网络技术有限公司

Dynamic scene information recording and simulation playback method, device, apparatus and medium

ActiveCN107678306ALow costScene stabilizationSimulator controlTest sceneControl algorithm
The present invention relates to a dynamic scene information recording and simulation playback method and a dynamic scene information recording and simulation playback device. The method includes thefollowing steps that: sensor data are collected, local coordinate-to-global coordinate transformation is performed on the sensor data, so that absolute position information is generated; a model and ascene are established according to the absolute position information, so that the restoration of a road environment is realized, global coordinate-to-local coordinate transformation is performed on the sensor data, so that relative position information can be generated, the driving process of a vehicle is simulated based on the relative position information, so that the restoration of the drivingscene of a user can be realized; and the vehicle is planned and controlled according to planning control information and the relative location information, so that an improved planning control algorithm can be verified. The device comprises a preprocessing module, a simulation module and a planning control module. With the dynamic scene information recording and simulation playback method and device of the invention adopted, a fixed regression test scene can be formed; the scene is not only stable, but also can reproduce a current fault; and the reproduction of the fault and the restoration of the scene are not affected even through the planning control algorithm changes.
Owner:UISEE SHANGHAI AUTOMOTIVE TECH LTD

Transformer partial discharge online detection data acquisition unit and detecting method

The invention relates to a data acquisition unit for on-line detection of transformer partial discharge and a detection method thereof. The data acquisition unit detects and acquires the transformer partial discharge signals and transmits the signals to a host computer for processing via a transformer partial discharge signal amplification module, a high speed data acquisition module and a remote communication module. In the invention, proper program control filtering and amplifying circuit are designed and manufactured, the precision of signals is high, the design and manufacturing of a high-speed and large-capacity multiple-channel synchronous data acquisition module circuit are finished, the requirement of detecting external multi-channel circuits can be met, and the adaptability is good; the invention is characterized by rapid sampling rate and large storage capacity, etc.; the whole acquisition system can be divided into a plurality of channels, the maximum sampling rate of each channel can reach 20MHz and the maximum storage depth can reach 512 K words; the data acquisition unit finishes digitization of partial discharge signals and upload the signals for processing, thus effectively reducing the distortion and aberration of the partial discharge signals during transmission, meanwhile, the data is transmitted by adopting the GPRS wireless communication technology, which reduces the cost and facilitates the construction and installation.
Owner:NANJING INTELLIGENT DISTRIBUTION AUTOMATION EQUIP

Ground walking test system of lunar surface inspection device

The invention discloses a ground walking test system of a lunar surface inspection device. The ground walking test system comprises a lunar surface lunar soil and lunar appearance simulation subsystem, a lunar surface gravity simulation subsystem, an illumination simulation subsystem and supporting test facilities, wherein the lunar soil and lunar appearance simulation subsystem is used for simulating lunar soil environments of the lunar surface and mare / lunar land areas; the lunar surface gravity simulation subsystem is used for accurately reproducing the wheel-ground stress condition of the inspection device in a lunar gravity environment on the ground, so that requirements for a ground walking test of the inspection device are met; and the illumination simulation subsystem is used for simulating a lunar surface illumination environment of a landing area. The ground walking test system is successfully applied to a ground test of the inspection device to finish multiple test tasks such as mobile performance, autonomous navigation, path planning, a joint test of a lander and the inspection device and the like in a matched mode, and every technical index meets test requirements, so that a condition for comprehensively and fully checking the walking performance of the inspection device is provided.
Owner:BEIJING INST OF SPACECRAFT ENVIRONMENT ENG

Binocular vision target surface 3D detection method and system based on unmanned aerial vehicle

InactiveCN108317953APrecise conversion relationshipReduce weightUsing optical meansAircraftsParallaxTarget surface
The invention discloses a binocular vision target surface 3D detection system based on a unmanned aerial vehicle. The system comprises the unmanned aerial vehicle, a binocular vision system, a computer system and remote control equipment. A detection method comprises the following steps of using a binocular vision system carried by the unmanned aerial vehicle to traverse and collect the image dataof a target surface; using images collected by the binocular vision system to match and acquire the parallax information of the left and right images through characteristic extraction; combining parameters inside and outside a camera to acquire the three-dimensional coordinates of the midpoints of the images so as to obtain target local three-dimensional point cloud; and through carrying out characteristic extraction and matching on the three-dimensional point cloud of the adjacent images of the left camera, acquiring a transformation relation between two three-dimensional point cloud coordinate systems, then realizing the registration in pairs of the three-dimensional point cloud, finally acquiring the three-dimensional point cloud data of a whole target surface, and comparing the original three-dimensional data of the target surface so as to realize the detection of a target. The system is applied to the surface detection of a large-scale target, such as large-scale industrial equipment and the like, the operation is simple and efficiency is high.
Owner:NORTHEAST DIANLI UNIVERSITY

Closed loop test system of flexible direct current transmission control protection system

The invention discloses a closed loop test system of a flexible direct current transmission control protection system. The closed loop test system of the flexible direct current transmission control protection system comprises a real-time digital simulator and a control protection device of a flexible direct current transmission device based on modularized multi-level, wherein the alternating voltage and current signal output end of the real-time digital simulator is connected with the alternating analog quantity input end of the control protection device, the direct voltage and current signal output end of the real-time digital simulator is connected with the direct analog quantity input end of the control protection device, the switching state signal output end of the real-time digital simulator is connected with the switching value input end of the control protection device, and the switching merge-joint command signal output end of the control protection device is connected with the switching value input end of the real-time digital simulator. The closed loop test system of the flexible direct current transmission control protection system has the advantages of being simple, flexible, and capable of conveniently and rapidly achieving tests on a whole flexible direct current transmission actual control protection system device based on the modularized multi-level.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Method for manufacturing digital PCR (polymerase chain reaction) chip based on mineral-oil saturated PDMS (polydimethylsiloxane) material

The invention relates to a method for manufacturing a digital PCR (polymerase chain reaction) chip based on a mineral-oil saturated PDMS (polydimethylsiloxane) material. The method is characterized in that the digital PCR chip based on PDMS is prepared from a PDMS monomer of a certain amount of mineral oil (liquid paraffin) and comprises an emulsion droplet generation structure and an emulsion droplet collection structure. After the emulsion droplets are made and collected on the same chip, the emulsion droplets are subjected to PCR amplification on the same chip. The phagocytosis to the oil phase in the digital PCR system by the PDMS of the chip can be avoided, the emulsion droplets can be kept stable during PCR, and the stability of the PCR can be guaranteed. In addition, compared with the existing technology of the digital PCR chip, the method provided by the invention is low in cost, is convenient to operate and has a very wide application prospect.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Multifunctional environment simulation cabin

The invention relates to environment simulation laboratory equipment, especially to a multifunctional environment simulation cabin comprising a cabin body, a PLC control system installed at the outer wall of the cabin body, an air circulation and purification sub system for air circulation and purification inside the cabin body, a new air conveying sub system for inputting new air into the cabin body, a target gas concentration control sub system, and a pressure-control exhaust system. The PLC control system is connected with and controls a plurality of function sub systems by signals, thereby realizing simulation of the environment with different temperatures and humidity and target gas concentrations inside the cabin. According to the invention, an external circulating air hose is provided with different purification device interfaces to installed tested purification devices, so that dynamic testing of tested purifiers on the circulating air hose as well as testing of static environments with different monitoring gas concentrations can be simulated. Testing demands of various purifying devices like an adsorption type purifying device, a photocatalysis type purifying device, or a plasma-technology-based purifying device can be satisfied.
Owner:SHENZHEN XIBAO SHIP ELECTRONICS

Frequency change system group delay test method

The invention relates to a frequency change system group delay test method which comprises the following steps of: generating an FM (Frequency Modulation) carrier signal of which the carrier frequency is the center frequency of a working frequency band of a frequency change system by a signal source; then dividing the signal into two paths, wherein one path of signal is input to the frequency change system by an attenuator and used as the input of a first A / D (Analog-to-Digital) converter by the attenuator after being output by the frequency change system, the other path of signal is used as the input of a second A / D converter, and the two A / D converters synchronously sample data by using the same reference clock; then respectively carrying out Hilbert transformation, digital down conversion and non-coherent demodulation on two paths of A / D sampled data; and carrying out digital phase comparison on the two paths of demodulated base band signals to obtain a group delay value of the frequency change system. A group delay test result of all frequency points of the frequency change system in the frequency band can be obtained by changing the carrier frequency of the FM carrier signal in the working bandwidth of the frequency change system and repeating the processing; and the measuring precision depends on system heat noise, the correcting precision of a test cable and A / D sampling resolution.
Owner:BEIJING INST OF SPACECRAFT SYST ENG

Device of detecting axial and radial runout of shaft parts

InactiveCN105737710AAvoid the defects of multiple adjustments to the detection instrumentRealize synchronous detectionMechanical measuring arrangementsMeasurement deviceMeasurement point
The present invention discloses a device of detecting axial and radial runout of shaft parts. The device comprises an installing panel used for installing and fixing all devices, and the installing panel is equipped with a tip automatic hole alignment device used for carrying out the automatic hole alignment on the shaft parts, a runout measurement device used for measuring the shaft neck radial runout and the shaft shoulder axial runout of the shaft parts, a man-machine interaction device used for acquiring, displaying, analyzing, determining and storing the runout detection data, an electrical control device used for installing and fixing all electrical parts in a detection mechanism and a friction transmission device used for transmitting the rotation of a motor shaft to the shaft parts. The beneficial effects of the present invention are that: 1, the runout error amounts at different positions are transmitted simultaneously by adopting the combination of a spring leaf structure and an alloy rod, the defect that a detection instrument needs to be adjusted repeatedly for a plurality of measurement points of a conventional deflection instrument is avoided, and the synchronous detection of the error amounts of three measurement points is realized.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Microcomputer controlled electro-hydraulic servo multi-functional pressure-shear test machine

The invention discloses a microcomputer controlled electro-hydraulic servo multi-functional pressure-shear test machine which belongs to the field of material test machines, and mainly solves the precision, speed and stress value problems of basic material performance test in the bridge construction. The machine comprises a main machine part, a hydraulic system, a control system and a specimen transportation car. The frame of the main machine comprises a stand, a screw rod, a movable cross beam, the frame and the like; the main machine is provided with a box-shaped pressure plate, a vertical servo loading oil cylinder, a horizontal shear servo loading oil cylinder, an angle servo loading oil cylinder, a synchronous floating servo oil cylinder, a cross beam lifting mechanism and a test device. The hydraulic system comprises a servo oil source, a hydraulic oil distributor and a remote pressure control system; the control system comprises an industrial personal computer, a conversion board, an electro-hydraulic servo control cabinet and a measuring instrument. The microcomputer controlled electro-hydraulic servo multi-functional pressure-shear test machine is used for the mechanical performance test to the middle plate-type and pot-type rubber brackets and spherical brackets in the bridge construction, such as single-pressure, pressure-shear and angle tests, and can take single-pressure test to metal and other non-metal and concrete components.
Owner:TIANSHUI HONGSHAN TESTING MACHINE

Expansive-soil slope hygroscopic deformation model experiment method and system

The invention discloses an expansive-soil slope hygroscopic deformation model experiment method and a system. The expansive-soil slope hygroscopic deformation model experiment method comprises following steps: A, soil samples are turned and subjected to sun drying so as to control water content and soil filling thickness; B, soil filling is carried out by layers, slope cutting is carried out uniformly, and a part of monitoring components are buried; C, an obtained soil slope is allowed to stand until cracks are generated, and a displacement sensor is arranged; D, physical quantity initial values are recorded; E, a rainfall simulator is used for realizing dropping-pouring type concentrated rainfall, and rainfall amount is controlled; F, physical quantities and rainfall amount are monitored according to rainfall stages; G, a rainfall-evaporation cycle is carried out repeatedly so as to stimulate drying and watering cycle; and H, slope morphologic change is recorded, and results are analyzed. The system comprises a model case, monitoring components, and a rainfall simulator; the monitoring components are arranged in the model case; and the rainfall simulator is arranged on the upper part slope shoulder of the model case. The expansive-soil slope hygroscopic deformation model experiment method and the system are suitable for a plurality of expansive-soil slope hygroscopic deformation model experiments, and possess significant importance for researches on expansive-soil slope stability and catastrophe mechanisms.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI

Full-automatic immunity analyzer and detection method thereof

The invention discloses a full-automatic immunity analyzer and a detection method thereof for the technical field of immunity analyzers of biological samples, mainly solving the technical problems of poor reliability, unstable and inaccurate obtainment of the consumption of working liquid, and no guarantee of washing quality when a liquid level resistor induction principle of a full-automatic immunity analyzer in the prior art is used for detecting liquid storage content. The full-automatic immunity analyzer is characterized in that: a liquid storage component comprises a cleaning solution bottle, a washing liquid A bottle, and a washing liquid B bottle which are independent of one another, the bottoms of the cleaning solution bottle, the washing liquid A bottle, and the washing liquid B bottle are respectively provided with an on-line weighing sensor for monitoring the weight of the working liquid in each bottle, providing the usage amount and margin signals of the working liquid of each bottle to a control system. According to the invention, the storage amount and usage amount of the working liquids in the liquid storage component can be accurately monitored in real time, the reliability of the control is good, the quality of washing can be guaranteed, and the fault of a fluid path system can be discovered in time.
Owner:SHENZHEN YHLO BIOTECH

Method for testing strata of horizontal well

The invention relates to a method for testing strata of a horizontal well, which is applied to the test of the strata of a horizontal well during casing well completion. The method comprises the steps of: setting parameters for a voltage-controlled electric multi-stream test valve, and putting the test valve into a casing of an oil well; performing the settlement of an annulus hydrostatic packer;performing annulus pressurization on an oil jacket by utilizing a pumper on the ground to realize well opening and well closing; completing sampling operation during the last closing operation, and simultaneously, recording the variation conditions of pressure and temperature in the overall process of construction by a pressure gauge in a pressure gauge support cylinder of the voltage-controlled electric multi-stream test valve; opening a reverse circulation valve by utilizing an external-force punch, deblocking the annulus hydrostatic packer by lifting a pipe column upwards to lift a stratumtesting pipe column and a mating tool safely. The method has the advantages that in a process pipe column for testing the strata of the horizontal well, the settlement of the packer is performed by utilizing the pressure of a casing annulus hydrostatic column, so that other stratum sections and well completion liquid are isolated from a test layer; and ground pressure pulse signals control the voltage-controlled electric multi-stream test valve to realize the well opening and well closing operation.
Owner:PETROCHINA CO LTD

Method for measuring harmful elements of lead, arsenic, cadmium, copper and chromium in eucalyptus oil food additive

The invention belongs to the field of chemistry and is suitable for measuring the harmful elements of lead, arsenic, cadmium, copper and chromium in a eucalyptus oil food additive. The measuring method comprises the following steps of: firstly, quantitatively splitting a sample of the eucalyptus oil food additive and placing the sample into a polytetrafluoroethylene digester of a microwave digestion instrument; secondly, digesting the sample by adding 40-50mL of nitric acid-peroxide into each 10mL of the sample of the eucalyptus oil food additive; thirdly, taking off a sample solution to cool, release pressure and discharge waste gas and adding ultrapure water to 50mL; fourthly, using 4 percent nitric acid to dilute lead, arsenic, cadmium, copper and chromium of a national standard stock solution (GBW) into standard solution mixing liquid with concentrations of 0.00microgram / L, 2.50microgram / L, 5.00microgram / L, 10.00microgram / L, 20.00microgram / L and 30.00microgram / L step by step, measuring ion abundance by using an ICP-MS (Inductively Coupled Plasma-Mass Spectroscopy) instrument, and with the concentrations as traverse coordinate and the ion abundance as longitudinal coordinate, automatically drawing an element calibration curve by a computer; and fifthly, measuring the ion abundance of the lead, the arsenic, the cadmium, the copper and the chromium in the sample solution of the third step and calculating the content of each element.
Owner:CHECKOUT & QUARANTINE TECH CENT YUNNAN ENTRY &EXIT CHECKOUT & QUARANTINE BUR

MXene@CS@PDMS three-dimensional porous composite material and preparation method and application thereof

The invention relates to an MXene@CS@PDMS three-dimensional porous composite material and a preparation method and application thereof. A high-sensitivity and high-reliability piezoresistive sensor isprepared by using the material. Since the cube sugar micro-pore granularity is proper and the structure is loose, the prepared PDMS has a three-dimensional sponge-like porous structure by using the cube sugar as a template and has the high flexibility and deformability. With introduction of the MXen@CS@PDMS system, an MXene nanosheet is attached to the PDMS surface tightly after successful loading of the MXene, so that a reliable three-dimensional conductive material is formed. Moreover, reaction parameters in the process of preparing the sensor are optimized to obtain the MXene@CS@PDMS composite three-dimensional structure with good stress and strain is obtained.
Owner:BEIJING UNIV OF CHEM TECH

System and method for detecting detectivity of space optical system

The invention relates to a system and a method for detecting detectivity of a space optical system. The system comprises a light source system, an alignment system, a star point unit, a spectrum acquisition unit, a master control system, a data processing unit and a display unit, wherein the alignment system and the spectrum acquisition unit are arranged on an emitting optical path of the light source respectively; the star point unit is arranged between the light source system and the alignment system, and lies on a focal plane of the light source system; a space optical system to be detected is arranged on the emitting optical path behind the alignment system; the data processing unit is respectively connected with the display unit and the space optical system to be detected; and the master control system is respectively connected with the space optical system to be detected, the light source system and the spectrum acquisition system. The invention provides a system and a method for detecting detectivity of a space optical system, which are capable of reliably and accurately acquiring detection data and are convenient for operation.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI

Method for fast analyzing pesticide residue in fruits and vegetables

The invention discloses a method for fast analyzing pesticide residue in fruits and vegetables, which is implemented by weighing a sample, adding anhydrous sodium acetate and anhydrous magnesium sulfate, adding acetic acid acetonitrile solution, centrifugating after shaking and extracting, putting the centrifugated acetonitrile extract into a centrifugating tube filled with mixed filler, shaking, centrifugating, sucking the cleaning fluid, concentrating and evaporating to be dry, dissolving the mixed solution with the volume ratio of acetonitrile and water being 1:1, and performing UPLC / MS / MS detection. The invention uses fruits and vegetables as matrix, uses the matrix dispersion solid extraction technology to pre-treat the sample to realize fast detection on 130 types of pesticide residue such as avermectins, aldicarb, Cyromazine and the like, having the characteristics of fast and exact detection result, high efficiency and low price.
Owner:烟台杰科检测服务有限公司

Preparation method of graphene-based surface strain sensor

The invention relates to a preparation method of a graphene-based surface strain sensor. The method comprises the following steps: (1), preparing graphene oxide dispersion liquid; (2), spraying the graphene oxide dispersion liquid on a substrate to form a thin graphene oxide film; (3), carrying out chemical reduction or ultraviolet irradiation on the thin graphene oxide film to form a thin graphene film; (4), connecting two copper electrodes to the two ends of the thin graphene film by conducting resins and connecting an ohm gauge between the two electrodes; and (5), spraying or brushing a high molecular solution on the thin graphene film continuously to form a high-molecular latex film. Compared with the prior art, the thin graphene oxide film is prepared by spraying; reduction is carried out by using a certain means; and then the graphene-based surface strain sensor is prepared. Because the operation is simple, the cost is low, and large-scale preparation can be realized well, the preparation method can be applied to the heath monitoring of the building structure.
Owner:TONGJI UNIV

System for testing particle moving speed based on single image

InactiveCN102393473AEnhance exposure intensityAvoid partial blurParticle size analysisFluid speed measurementCamera controlCamera lens
The invention discloses a system for testing the particle moving speed based on a single image. In the system, a continuous laser is taken as a laser light source, and a shift lens is taken as a camera lens; by adjusting the horizontal position of the shift lens, the shift lens is deviated from a sheet light source along the vertical direction by a certain angle, and the exposure intensity of a particle image is remarkably increased; and by adjusting an included angle between the shift lens and a camera sensitive surface, planes where the shift lens, the light sensitive surface of the camera and the sheet light source are intersected on a straight line, and clear imaging of all particles in a testing area is realized. In the invention, the exposure time is controlled by using the camera, changes of the speed and moving direction of the particles within the expose time can be reflected in real time only by acquiring a single image of the particle moving, and parameters such as speed change and distribution of particles in a flow field, particle diameter distribution of the particles and the like can be obtained by processing. The system has low equipment cost and low manufacturing cost, and can be applied to particle parameter testing of various atomization and flow fields.
Owner:NANJING UNIV OF SCI & TECH

Testing method and device for software interface state change time

ActiveCN102662839AReal boot timeReal State Change PerformanceSoftware testing/debuggingState variationStart time
The application provides a testing method and device for software interface state change time, and is used for solving the problem that the software interface change time tested in the prior art is inaccurate. The method comprises the steps of: triggering the operation of changing the testing interface state, and recording the triggering time as starting time; detecting the preset change of a reference object of the testing interface, and recording the detection time as terminal time; and recording the time interval of the terminal time and the starting time as the interface state change time. According to the characteristic that the reference object changes when the testing interface state changes, the time of the software interface presented to the user is obtained, namely the true starting time of the software is obtained.
Owner:BEIJING QIHOO TECH CO LTD

Assembly test method and device

The invention provides an assembly test method and device. The assembly test method includes the steps that test cases corresponding to serial numbers of the test cases are acquired from a preset test case library according to the serial numbers of the test cases of tested assemblies, wherein the test cases comprise test case TCL scripts, test input data, test case anticipated output and test case execution configuration files; the test input data are input to the test case TCL scripts, and then configuration of the test case execution configuration files is finished; whether the test cases meet preset test conditions or not is judged according to the configured test case execution configuration files; if yes, the test input data are sent to the tested assemblies, the tested assemblies are made to execute logic processing and output a processing result according to the test input data; the processing result is compared with the test case anticipated output, and corresponding test logs are generated according to the comparison result.
Owner:RUIJIE NETWORKS CO LTD

Six-degree-of-freedom distributed semi-physical simulation method and system of launch vehicle

The invention discloses a six-degree-of-freedom distributed semi-physical simulation method of a launch vehicle. The method comprises: S1, establishing a six-degree-of-freedom distributed semi-physical model of a launch vehicle and establishing simulation models for all modules in the model; S2, according to an input and output relationship between all modules in the six-degree-of-freedom distributed semi-physical model of a launch vehicle, erecting a six-degree-of-freedom distributed semi-physical simulation system of the launch vehicle; and S3, establishing a test flow of the six-degree-of-freedom distributed semi-physical simulation system of the launch vehicle, operating the six-degree-of-freedom distributed semi-physical simulation system of the launch vehicle, simulating six-degree-of-freedom data of flight of the launch vehicle so as to complete six-degree-of-freedom distributed semi-physical simulation of the launch vehicle. In addition, the invention also discloses a simulation system. Therefore, the motion rule and characteristics of the conveyer can be reproduced vividly and comprehensively; and the correctness, parameter coordination, interference adaptability, and flight software reliability of the control system plan can be checked.
Owner:SHANGHAI AEROSPACE CONTROL TECH INST

Chip and method for capturing target sequences of tumor susceptibility genes, and mutation detection method

The invention discloses a chip and method for capturing target sequences of tumor susceptibility genes, and a mutation detection method. The chip is a liquid chip which binds with probe groups capable of simultaneously capturing at least 5, preferably at least at least 10, preferably at least at least 20, preferably at least at least 30, preferably at least at least 50, preferably at least at least 80, preferably at least at least 100, preferably at least at least a10, or preferably all of 115 genetic tumor susceptibility genes as shown in a table 1. The mutation detection method comprises a step of capturing the target sequences of the genetic tumor susceptibility genes by using the liquid chip and a step of carrying out sequencing by using G2 high-flux sequencing technology so as to find out mutation sites. The mutation detection method has the advantages of a wide application scope, high efficiency, comprehensiveness and easy operation, can detect replacement of a single base, insertion or deletion of a single base / multiple bases and deletion / amplification of large fragments and is capable of realizing high-efficiency comprehensive detection of common tumor susceptibility gene mutation.
Owner:SHENZHEN HUADA GENE INST

Color-fluorescence dual-function immunochromatography test strip and preparation method thereof

The invention belongs to the field of biological detection, and particularly relates to a color-fluorescence dual-function immunochromatography test strip and a preparation method thereof. The test strip comprises a base plate (1). A sample addition pad (2), a marker combination pad (3), a detection pad (4) and a water absorption pad (5) are sequentially arranged on one face of the base plate (1), wherein the detection pad (4) is provided with a detection line T (41) and a quality control line C (42), and the water absorption pad (5) provides power for a capillary tube siphoning, the adjacent pads are sequentially connected in an overlapped mode, and a color-fluorescence dual-function microsphere marker probe coats the marker combination pad (3). According to the color-fluorescence dual-function immunochromatography test strip and the preparation method thereof, negative and positive attribute preliminary qualitative judgment can be performed on the detection result through naked eyes, the detection result can also be analyzed through an instrument, and accurate detection data are obtained.
Owner:南京微测生物科技有限公司
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