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33results about How to "The experimental results are accurate and reliable" patented technology
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Direct-driven centrifugal separation equipment
ActiveCN105251624AEasy to removeEasy to replaceRotary centrifugesEnvironmentally friendlyEngineering
The invention discloses direct-driven centrifugal separation equipment. The equipment is characterized by comprising one or more components of a centrifugal rotary table or a centrifugal rotary barrel (A), a centrifugal rotary drum or a centrifugal rotor (B), a centrifugal liquid collection cavity (C) and a driving system (D). The direct-driven centrifugal separation equipment has the advantages that the size of the centrifugal rotary drum can be changed freely according to needs, and the centrifugal rotary drum can be placed in and taken out easily and conveniently; the centrifugal liquid collection cavity serving as a system main body is integrally manufactured through the integral forming technology, the manufacturing process is simple, and the cost is low; the whole centrifugal system is simple, practical, capable of saving energy, environmentally friendly and convenient to apply and popularize.
Owner:唐凌霄
Method used for identidying material anisotropic plasticity parameters based on spherical impression morphology
ActiveCN108132193ADestructiveConvenient experimentInvestigating material hardnessAnisotropic plasticityNumerical models
The invention discloses a method used for identidying material anisotropic plasticity parameters based on spherical impression morphology. According to the method, a spherical impression equipment isadopted for indentation test of a test piece so as to obtain impression morphology response information left on test piece surface; orthogonal decomposition and parametric approximation are adopted soas to obtain a value model used for representing the relationship of the material anisotropic plasticity mechanical property parameters with the impression morphology response information, reverse derivation constraint optimization problem is adopted so as to obtain the anisotropic plasticity mechanical property parameters of the material to be test through reverse derivation. In applications, the spherical impression morphology information obtained in the indentation experiment is input into the value model, and the anisotropic plasticity mechanical property parameters of the material to betest are obtained through certain steps of calculation. The method can be used in anisotropic material small size sample detection, nondestructive test, and material in-suit test, and the accuracy ofmaterial anisotropic plasticity parameters obtained via reverse derivation using the method is high.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Tunnel lining structure uniform load test system and sealing method thereof
InactiveCN104502137AEasy to observeImprove test detection accuracyStructural/machines measurementFiberCarbon fibers
The invention discloses a tunnel lining structure uniform load test system and a sealing method thereof. The tunnel lining structure uniform load test system comprises a pressurizing system, a model box and a tunnel lining arranged in the model box, the pressurizing system is a steel frame pressurizing system and mainly comprises a side beam, a top beam and an oil cylinder, the model box comprises six panels and a force transferring plate, a pulley is arranged at the bottom of the force transferring plate, the tunnel lining is arranged in the model box, the space between the model box and the tunnel lining is filled with water, oil or lubricating grease, the model box is a sealed model box, a force transferring medium is changed, so that the sealing performance of the model box is improved, approximate uniform pressurizing at the back of the lining can be realized, load pressure at the back of the lining can be directly controlled, a large-scale similar model test can be realized, and the tunnel lining structure uniform load test system can be used for researching distress tunnel lining structure carrying performance, a lining crack expanding test and a large-scale flexible stabilization (carbon fibers and steel belt) test in tunnel lining carrying performance and structural design and operation.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
Method for culturing aseptic seedlings of plants
InactiveCN102119658AGood qualityLow toxicityHorticulture methodsPlant tissue cultureResearch resultGermination
The invention relates to a technology for culturing aseptic seedlings of plants and application thereof, particularly suitable for seedlet plants such as model plant arabidopsis thaliana, medicinal plant artemisia annua, fruit and vegetable tomato, pepper and the like. The method gets rid of the disturbances of other microbes in the environment and is particularly suitable for searching mutual action between the plants and the microbe. The method comprises steps of: preparing nutritious substrates for seed germination and seedling growth, sterilizing the surfaces of the plant seeds, and germinating the plant seeds. The method is a convenient and efficient g method for culturing aseptic seedlings of plants and has low cost; in addition, the method is free of sterilizing agent residual, thereby ensuring the reliability and accuracy of subsequent research results.
Owner:SOUTHEAST UNIV
Experimental method for fracture reorientation rule in oriented perforating and fracturing process
ActiveCN102778552AHigh test reliabilityThe experimental results are accurate and reliableEarth material testingFracture processEnvironmental geology
The invention provides an experimental method for researching the fracture reorientation in the oriented perforating and fracturing process. The experimental method comprises the following steps of: A, making a test piece by a core exposure cube of which the side edge is greater than or equal to 1m; B, then arranging the test piece in a three-axis stress loading device and sequentially carrying out oriented perforating and fracturing on the test piece under the three-axis stress loading condition; and C, after carrying out fracturing, analyzing the test piece. The experimental method provided by the invention has a more reliable test result and is convenient to observe a fracture extension rule.
Owner:PETROCHINA CO LTD
Fluorescent chemosensor for detecting transcription factor NF-kappaBp50 and detection method thereof
ActiveCN107389646AReduce usageAchieve the purpose of quenchingFluorescence/phosphorescencePcr methodBiochemistry
The invention discloses a fluorescent chemosensor for detecting a transcription factor NF-kappaBp50 and a detection method thereof. The fluorescent chemosensor takes 2-aminopurine (2-AP) as a fluorescent group, target-driven spontaneous isothermal amplification and exonuclease-assisted fluorescent signal amplification strategies are adopted, ultrasensitive detection of the transcription factor is realized under the condition that no extract primer and template participates in, operation is easy and rapid, and test results are accurate and reliable. Experiments verify that detection limit of the technical scheme reaches 4.04*10<-4>mg / ml and can be comparable with a real-time fluorescent quantitative PCR method. Therefore, the technical scheme of the invention has extremely high popularization and application values.
Owner:SHANDONG NORMAL UNIV
Animal sleep deprivation device and application thereof
InactiveCN103623491AThe experimental results are accurate and reliableGood parallel repeatabilityTaming and training devicesSleep inducing/ending devicesInsomniaAnimal science
The invention relates to an animal sleep deprivation device and application of the animal sleep deprivation device. The animal sleep deprivation device is provided with a stimulation occurrence base plate and a multi-lead program control instrument. The stimulation occurrence base plate is sequentially provided with a sieve plate, a stimulation plate and a supporting plate from top to bottom. The sieve plate is provided with sieve holes. The upper end face of the stimulation plate is provided with stimulation columns which correspond to the sieve holes in position and can penetrate through the sieve holes. A mechanical power device is arranged between the stimulation plate and the supporting plate, and is connected with the multi-lead program control instrument through a guide line. The multi-lead program control instrument is provided with a switch key, a guide line interface and a parameter adjusting panel. When the animal sleep deprivation device is used for building an insomnic animal model, no harmful stimulation is produced on experimental animals, experimental results are more accurate and reliable, the repeatability is good, multiple insomnia models can be obtained, and operation is convenient. The animal sleep deprivation device is simple in structure and low in cost.
Owner:TENTH PEOPLES HOSPITAL OF TONGJI UNIV
Tire-pattern-water-draining-performance experiment table and experiment method
PendingCN107132060AThe experimental results are accurate and reliableCompact structureVehicle tyre testingWater pipeEngineering
The invention discloses a tire-pattern-water-draining-performance experiment table and an experiment method. The tire-pattern-water-draining-performance experiment table comprises a bottom frame, a rotating belt device for simulating the road surface is installed on the bottom frame, a hub is installed on the rotating belt device, a tire is installed on the hub, the hub is driven by a motor to rotate, and the motor is fixed through a hanging arm; a water storage device is also installed on the bottom frame, and a water pipe joint, an air pipe joint and a water discharging pipe are installed on the water storage device; the water pipe joint is connected with a water feeding pipe, the air pipe joint is connected with an air pump, and a water outlet of the water discharging pipe is right opposite to the circumference face of the tire; when the certain water amount exists in the water storage, the output air pressure of the air pump is adjusted for being capable of changing the water spraying amount; a camera is installed on one side of the tire, and a floodlight is installed on the other side opposite to one side.
Owner:SHANDONG JIANZHU UNIV +2
Evaluation method of crude oil paraffin inhibitor
The invention relates to an evaluation method of a crude oil paraffin inhibitor, and belongs to the technical field of oilfield chemistry. The evaluation method of the crude oil paraffin inhibitor comprises the following steps: 1) taking a test sample: taking a crude oil emulsion as the test sample, wherein water in the emulsion is not separated in the scene; 2) adding a paraffin inhibitor: weighing a container, adding the test sample into the container, sealing the container and keeping constant temperature to the oilfield scene temperature, adding the paraffin inhibitor into the container, shaking and vibrating the container; 3) weighing paraffin sticking to the container wall: performing constant temperature treatment on the container containing the paraffin inhibitor and the crude oil emulsion under the condition of the in situ temperature of the oilfield, placing the container upside down under the condition of constant temperature, and weighing the container after the container is placed upside down; 4) carrying out a blank test: carrying out a blank test without adding the paraffin inhibitor at the same time; 5) calculating the paraffin inhibiting ratio: calculating the paraffin inhibiting ratio according to the following formula: X1= (m1-m2) / m1*100 %. The evaluation method has the advantages of being simple and convenient, quick, reliable in data, and capable of screening and evaluating paraffin inhibitors applicable to oilfield more accurately, can slow down the precipitation of paraffin, and guarantees the normal production and operation of the oilfield.
Owner:E TECH ENERGY TECH DEV CORP
Unstable-state titration device and method for testing medium-high permeable core liquid permeability
The invention provides an unstable-state titration device and method for testing medium-high permeable core liquid permeability. The device comprises a standard container, a core clamp, an ISCO pump,a pressure sensor and a liquid receiving pipe, the standard container is connected with an upstream-end inlet of the core clamp by an inlet valve through a pipeline, and an outlet of the core clamp isconnected with the liquid receiving pipe by an outlet valve through a pipeline; the upstream end of the core clamp is connected with an emptying valve, and the ISCO pump is connected with annulus ofthe core clamp by the pressure sensor through a pipeline. The unstable-state titration device and method are low in requirements on experimental hardware, simple in operation and accurate and reliablein experimental result, the objective of quickly, effectively, conveniently, quickly and accurately testing medium-high permeable core liquid permeability is achieved, and acquired testing results can provide basic data for medium-high permeable reservoir evaluation and capacity research.
Owner:PETROCHINA CO LTD
Supersonic aircraft wave resistance measurement device based on laser energy deposition resistance reduction
PendingCN109612679ASolve IdemitsuSolving Shock Tunnel StartupsAerodynamic testingShock waveDetonation
The invention discloses a supersonic aircraft wave resistance measurement device based on laser energy deposition resistance reduction. The supersonic aircraft wave resistance measurement device basedon laser energy deposition resistance reduction comprises a shock tunnel, a blunt body and a laser energy loading system; the blunt body is contained in the shock tunnel, and the shock tunnel generates bow shock waves at the front end of the blunt body; a light path penetrates through the shock tunnel and generates detonation waves at the bow shock waves; and the blunt body is used for detectingpressure values at acting points of the bow shock waves and the detonation waves. The measurement device has the advantages that the response speed is high, a flow field structure can not be destroyed, and control is flexible.
Owner:PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
Crevice corrosion experiment device and method capable of regulating and controlling size of crevice in situ in real time
ActiveCN111307707AThe experimental results are accurate and reliableEasy to useWeather/light/corrosion resistanceWorking electrodeReciprocating motion
Owner:INST OF OCEANOLOGY - CHINESE ACAD OF SCI +2
Automobile brake pad machining equipment with disc sticking degree detection function in preset environment
InactiveCN112268714AIncrease variableIncrease credibilityVehicle testingMachine part testingMotor vehicle partControl engineering
The invention discloses an automobile brake pad machining device with a disc sticking degree detection function in a preset environment, and relates to the technical field of automobile part detection. The equipment particularly comprises a base, an eccentric rotating plate mechanism, an enabling mechanism, a hydraulic range extending mechanism and a self-centering eccentric wheel clamp, wherein one side of the bottom end of the base is provided with a control end, and the enabling mechanism is arranged on one side of the eccentric rotating plate mechanism. According to the automobile brake pad machining equipment with the disc sticking degree detection function in the preset environment, by arranging the enabling mechanism, the problem that special equipment for detecting the sticking degree of a brake pad in different preset environments lacks in the prior art is perfectly solved, a limiting baffle at the opening end of the enabling mechanism can position and fix a rotating plate rotating to the designated position, the enabling of different preset environments can be conducted on the surface of the rotating plate through a spray head by means the a control end, actual frequent meeting working conditions such as silt, rainwater and ice and snow can be simulated according to actual experiment requirements, variables of the brake pad experiment are increased, and the credibility of an experiment result is increased.
Owner:DONGGUAN UNIV OF TECH
Least square method path prediction algorithm based on commensurability idea
ActiveCN108520044ANot complicatedImprove accuracyForecastingSpecial data processing applicationsTurn anglePrediction algorithms
The invention discloses a least square method path prediction algorithm based on a commensurability idea. Based on a real user trajectory, the algorithm collects a trajectory data set, extracts latitude and longitude data, divides the trajectory according to a time threshold, plans the area where all points from a starting point of the trajectory to a point which not exceeds a distance threshold are located as a moving point, connects each center point between adjacent moving points in the trajectory to form a new trajectory map, obtains angle values corresponding to all adjacent points, obtains a turning angle set according to a angle threshold, verifies the turning angle set through the commensurability, obtains error values of the current trajectory by least square method fitting, predicts a turning angle of a next trajectory of a user according to the error values, and finally plans a path by combining time and speed. Counting and finding out a user movement angle change law can further improve the accuracy of prediction based on the user.
Owner:XI AN JIAOTONG UNIV
Pipe flow type coating material erosion resistance performance experiment device and method
ActiveCN109406375AThe experimental results are accurate and reliableImprove experimental efficiencyWeather/light/corrosion resistanceSolid phasesTest sample
The invention discloses a pipe flow type coating material erosion resistance performance experiment device and method. The pipe flow type coating material erosion resistance performance experiment device comprises a solid phase supply module, a circulation pipeline and a pipe flow type erosion module, wherein the solid phase supply module comprises a mixing box, a motor and a mixing blade; the starting end and the terminal end of the circulation pipeline are both connected with the solid phase supply module; the pipe flow type erosion module comprises an outer pipe, a test sample clamping device and a support seat. The experiment method comprises the following steps of regulating the solid phase content of multi-phase flow and the flow rate of the multi-phase flow; regulating the test sample clamping device to perform material erosion experiments; performing quality and appearance detection on the test samples subjected to erosion; and evaluating the erosion resistance performance. Thedevice and the method disclosed by the invention have the beneficial effects that the particle supply of the solid phase supply module is uniform; the material erosion environment is more similar tothe industrial practice; and the accurate experiment on the long-time erosion resistance performance of a plurality of test samples in the same batch under the conditions of different multi-phase fluid, different erosion angles and different erosion speeds can be realized.
Owner:SOUTHWEST PETROLEUM UNIV
Device for measuring migration mass of vaporous water in unsaturated soil and using method thereof
ActiveCN111521512ASimple structureEasy to operateWeighing by removing componentPreparing sample for investigationSoil scienceEnvironmental engineering
The invention provides a device for measuring the migration mass of vaporous water in unsaturated soil. The device comprises a base, a cutting ring, a spacing gasket, a filter paper fixing gasket, filter paper, a pull rod and a nut. The cutting ring is detachably embedded into the base; a soil sample is contained in the cutting ring; the spacing gasket is mounted at the upper part of the base; andthe filter paper fixing gasket is mounted at the upper part of the spacing gasket. The device is of an up-and-down symmetrical structure and is connected into a whole through the pull rod and the nut. The device is simple in structure, easy to implement, convenient to operate and low in cost, facilitates measurement of the migration mass of the vaporous water in soil samples with different heights, different water contents and different densities at different distances, different time and different temperatures, ensures that an experimental result is accurate and credible, and is an efficientand practical device for measuring the migration mass of the vaporous water in the unsaturated soil.
Owner:JILIN UNIV
A Least Square Path Prediction Algorithm Based on the Idea of Commensurability
ActiveCN108520044BNot complicatedImprove accuracyForecastingGeographical information databasesPrediction algorithmsData set
The invention discloses a least square method path prediction algorithm based on a commensurability idea. Based on a real user trajectory, the algorithm collects a trajectory data set, extracts latitude and longitude data, divides the trajectory according to a time threshold, plans the area where all points from a starting point of the trajectory to a point which not exceeds a distance threshold are located as a moving point, connects each center point between adjacent moving points in the trajectory to form a new trajectory map, obtains angle values corresponding to all adjacent points, obtains a turning angle set according to a angle threshold, verifies the turning angle set through the commensurability, obtains error values of the current trajectory by least square method fitting, predicts a turning angle of a next trajectory of a user according to the error values, and finally plans a path by combining time and speed. Counting and finding out a user movement angle change law can further improve the accuracy of prediction based on the user.
Owner:XI AN JIAOTONG UNIV
Sand control simulation experiment tank
The invention relates to a sand control simulation experiment tank, and relates to the field of sand control simulation. The main technical scheme includes that the sand control simulation experiment tank comprises a tank body, a sealing connecting seat and a filter; the tank body comprises a first end and a second end which are in opposite directions; a sand filling groove is formed in the first end, and an oil inlet hole which is communicated with the sand filling groove is formed in the second end; the sealing connecting seat comprises a third end and a fourth end which are in opposite directions; an oil outlet groove is formed in the fourth end, at least one flow hole which is perforated through the third end is formed in the bottom surface of the oil outlet groove, the third end is connected with the first end, and the oil outlet groove is communicated with the inside of the sand filling groove via the flow holes; the filter is arranged on a side of the end, which is deviated from the oil outlet groove, of each flow hole and covers an opening of the flow hole; the size and the shape of the contour of the inner edge of the sand filling groove are identical to the size and the shape of the contour of the inner edge of the oil outlet groove. The sand control simulation experiment tank has the advantage that the experiment precision of the sand control simulation experiment tank can be improved.
Owner:ANTON OILFIELD SERVICES (GRP) LTD
A Method for Identifying Anisotropic Plastic Parameters of Materials Based on Spherical Indentation Morphology
ActiveCN108132193BDestructiveConvenient experimentInvestigating material hardnessAnisotropic plasticityTest material
The invention discloses a method used for identidying material anisotropic plasticity parameters based on spherical impression morphology. According to the method, a spherical impression equipment isadopted for indentation test of a test piece so as to obtain impression morphology response information left on test piece surface; orthogonal decomposition and parametric approximation are adopted soas to obtain a value model used for representing the relationship of the material anisotropic plasticity mechanical property parameters with the impression morphology response information, reverse derivation constraint optimization problem is adopted so as to obtain the anisotropic plasticity mechanical property parameters of the material to be test through reverse derivation. In applications, the spherical impression morphology information obtained in the indentation experiment is input into the value model, and the anisotropic plasticity mechanical property parameters of the material to betest are obtained through certain steps of calculation. The method can be used in anisotropic material small size sample detection, nondestructive test, and material in-suit test, and the accuracy ofmaterial anisotropic plasticity parameters obtained via reverse derivation using the method is high.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Unsteady titration device and method for measuring permeability of medium and high permeability core fluid
The invention provides an unstable-state titration device and method for testing medium-high permeable core liquid permeability. The device comprises a standard container, a core clamp, an ISCO pump,a pressure sensor and a liquid receiving pipe, the standard container is connected with an upstream-end inlet of the core clamp by an inlet valve through a pipeline, and an outlet of the core clamp isconnected with the liquid receiving pipe by an outlet valve through a pipeline; the upstream end of the core clamp is connected with an emptying valve, and the ISCO pump is connected with annulus ofthe core clamp by the pressure sensor through a pipeline. The unstable-state titration device and method are low in requirements on experimental hardware, simple in operation and accurate and reliablein experimental result, the objective of quickly, effectively, conveniently, quickly and accurately testing medium-high permeable core liquid permeability is achieved, and acquired testing results can provide basic data for medium-high permeable reservoir evaluation and capacity research.
Owner:PETROCHINA CO LTD
A method and application for detecting five-toed traits of Beijing chicken
ActiveCN106244713BHigh sensitivityHigh degree of automationMicrobiological testing/measurementDNA/RNA fragmentationBiotechnologyGenotype
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
A fluorescent chemical sensor for detecting transcription factor NF-κBP50 and its detection method
ActiveCN107389646BReduce usageAchieve the purpose of quenchingFluorescence/phosphorescencePcr methodSignal amplification
Owner:SHANDONG NORMAL UNIV
A device for measuring the migration mass of gaseous water in unsaturated soil and its method of use
ActiveCN111521512BSimple structureEasy to operateWeighing by removing componentPreparing sample for investigationSoil scienceEnvironmental engineering
Owner:JILIN UNIV
Device and method for dynamically evaluating influence of additives on hydrates for long time
PendingCN112546982AReduce experimental errorThe experimental results are accurate and reliableProcess control/regulationGaseous fuelsMeasurement precisionDrilling fluid
The invention provides a device and method for dynamically evaluating the influence of additives on hydrates for a long time. The device comprises a temperature control system consisting of a low-temperature circulating bath and a temperature sensor; a gas circulation system consisting of a gas source, a return storage tank, a servo booster pump, a first buffer tank, a second buffer tank, a precision flowmeter, a pressure regulating valve and a flushing tank drying pipe; a hydrate generation system consisting of a reaction kettle, an upper end cover, a lower end cover and a stirring rotor; anda data recording and monitoring system consisting of a camera, a computer, the temperature sensor and a pressure sensor. By observing hydrate formation, decomposition and aggregation conditions, theinfluence of various drilling fluid additives on hydrate formation is evaluated, and a reference is provided for preventing and solving the problem of hydrate blockage in a wellbore and a pipeline inhydrate exploration and development and flow guarantee. The device has the advantages that hydrate formation is monitored within a long time span, the hydrate formation rate is monitored in real time,emission of experimental gas is reduced, and thedevice is efficient, capable of saving energy, high in measurement precision and the like.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
A Salt Frost Heave Tester Realizing Hydrothermal Coupling Effect
ActiveCN109945928BIncrease humidityRealize the coupling effectMeasurement devicesCouplingTester device
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY
Processing equipment capable of replacing lug wings and having anti-falling test function
PendingCN113654775AGuaranteed stable clampingAvoid affecting the accuracy of the experimentMachine part testingWork holdersControl engineeringStructural engineering
The invention discloses processing equipment capable of replacing lug wings and having an anti-falling test function, and relates to the technical field of special-shaped component processing detection, in particular to a base, an internal expansion clamping mechanism, a puncture detection mechanism, an expansion locking mechanism and an alicyclic ring, and the alicyclic ring is connected to the bottom end of an expansion sleeve. In the processing equipment capable of replacing lug wings and having an anti-falling test function, the internal expansion clamping mechanism is arranged, the mechanism is specially designed according to material characteristics and annular structural characteristics of replaceable lug wing material elastic rubber, by rotating the adjusting handle, the screw meshed with the adjusting handle is subjected to downward driving force relative to the adjusting handle component, the spherical pin is driven to extrude the three sliding columns arranged at the bottom end of the guide groove, the shape of the supporting pieces arranged at the output ends of the tops of the sliding columns is matched with the shape of the end face of an inner hole of the to-be-detected replaceable lug wing material, it is guaranteed that the to-be-detected replaceable lug wing material is clamped stably, and it is avoided that the experiment precision is affected by loosening and slipping in the detection process.
Owner:东莞市天楚机电科技有限公司
Automatic equipment with antifouling sleeve mounting function for mouse wheel
PendingCN113618468AFlipThe experimental results are accurate and reliableMeasurement/indication equipmentsMetal working apparatusGear wheelControl engineering
The invention discloses automatic equipment with an antifouling sleeve mounting function for a mouse wheel, and relates to the technical field of special-shaped component machining and detection. The automatic equipment specifically comprises a mechanical arm, a pneumatic synchronous clamp, a torsion conveying mechanism, a lifting rotating mechanism and a multidirectional testing mechanism, and one side of the mechanical arm is connected with the pneumatic synchronous clamp. According to the automatic equipment with the antifouling sleeve mounting function for the mouse wheel, the multi-directional testing mechanism is arranged, a servo motor drives a driving gear to rotate through a bearing seat at the top end of a base, under the meshing action of the driving gear and driven gears, the driven gears slide in a guide groove which is located at the top end of the base and formed by a triangular boss and a bearing seat through rollers connected with the bottom ends of guide rods penetrating through the end faces of the two sides of the driven gears, so that overturning of test plates at the top ends of the guide rods is achieved, a user can replace different test cards through double-face toggle clips according to experiment requirements, therefore, the adaptive capacity of the mouse wheel to different pollutants is tested, and the experimental result is more accurate and reliable.
Owner:东莞市天楚机电科技有限公司
Method for rapidly detecting EGFRvIII mutation
PendingCN111996243AAvoid interferenceAvoid pollutionMicrobiological testing/measurementHousekeeping geneTissue sample
The invention discloses a method for rapidly detecting EGFRvIII mutation. EGFRvIII RNA is used as a starting template of a reaction, redundant intron sequences in an EGFRvIII DNA sequence are avoided,and a probe crosses a fusion site of an EGFRvIII exon, so that interference of genome DNA is effectively avoided, and a detection result is more accurate; reverse transcription and real-time PCR share one reaction system, which avoids pollution possibly caused by repeated cover opening compared with traditional detection that carries out amplification by using cDNA as a template after reverse transcription; by changing fluorophores, a housekeeping gene ACTB is introduced into a single system, so that the risk of false negative is reduced, and the risk of false positive is reduced by identifying the result of [delta]Ct; a designed PCR product is relatively small, so that a paraffin-embedded sample with a high degradation degree can meet detection requirements, and meanwhile, the detectionresult can be in correspondence with an EGFRvIII immunohistochemical result of the same tissue sample. The method is simple in operation, and guarantees credibility and accuracy of the detection result.
Owner:杭州布平生物医药科技有限公司
A ground mechanical performance testing device for underwater operation of crawler vehicles
ActiveCN110849743BSolve the problem of excessive slip ratioImprove passing efficiencyMaterial strength using tensile/compressive forcesMaterial strength using steady shearing forcesPressure generationClassical mechanics
The invention discloses a ground mechanical performance testing device for underwater operation of a crawler vehicle, comprising an experimental bench support, a transverse shear stress generating unit, a vertical subsidence pressure generating unit, a sediment simulation unit, a crawler shoe motion simulation unit and a test unit. The experimental bench support, the sediment simulation unit and the track shoe motion simulation unit are used to simulate the underwater operation conditions of the tracked vehicle. The transverse shear stress generation unit and the vertical subsidence pressure generation unit generate shear stress and subsidence pressure. The test unit determines the ground mechanics between the track shoes and the sediment. The invention can improve the passing performance of the tracked vehicle during underwater operation by changing the structural parameters of the track shoe and the road condition of the sediment under the experimental environment condition.
Owner:JIANGSU UNIV
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