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Method for macroscopically quantizing microscopic remaining oil in different occurrence states
ActiveCN103206208ARaise the level of researchMeet the actual needs of developmentBorehole/well accessoriesRock coreMicroscopic observation
The invention discloses a method for macroscopically quantizing microscopic remaining oil in different occurrence states. The method includes the steps: acquiring a remaining oil reserve distribution field and a water saturation distribution field by macroscopic numerical simulation; determining the range of underground water saturation under the condition of different washing degrees according to washing degree differentiating standards and original water saturation, and obtaining macroscopic remaining oil reserve with different washing degrees according to the remaining oil reserve distribution field and the water saturation distribution field; determining the washing degree of a rock core in a current state by water saturation correction test for a coring well, determining the relative content of the microscopic remaining oil in different occurrence states by microscopic observation test for oily slices of the coring well, and counting to obtain the relative content of the microscopic remaining oil in different occurrence states under different washing degrees; and macroscopically quantizing the microscopic remaining oil by applying computation expression for microscopic remaining oil mass in different occurrence states according to the macroscopic remaining oil reserve with different washing degrees and the relative content of the microscopic remaining oil in different occurrence states under different washing degrees.
Owner:GASOLINEEUM EXPLORATION DEELOPMENT INST OF HENAN OILFIELD BRANCH SINOPEC
Time base frequency real time calibration frequency measuring method and apparatus
InactiveCN101441232AImprove accuracyRealize high-precision frequency measurementFrequency to pulse train conversionFrequency measurementsBase frequency
The invention discloses a real-time calibration and frequency measurement method for time base frequency and a device thereof, wherein the method comprises the following steps: 1) calibration step: a frequency measurement device acquires an external high-accuracy standard-frequency signal with Fs of given frequency as a calibration signal; the actual frequency value measured by the frequency measurement device is Fs'; a calibration factor K which is equal to Fs / Fs' is calculated and stored, and the calibration factor K can not be updated until the next calibration step is finished; 2) measurement step: the frequency of the unknown signal measured by the frequency measurement device is Fx', and the calculated and revised frequency value of the unknown signal Fx is equal to K * Fx'; 3) the process returns to step 1). The method and the device can ensure that, the time base frequency can be as accurate as 5E-10 and the second gate time frequency measurement can be as accurate as 1E-9 when measuring frequency and the accuracy of the measured frequency can be determined, thereby solving the problems of undetermined frequency timing base frequency accuracy, low precision, and the like of the prior art.
Owner:CENT SOUTH UNIV
In-water color particle image velocimetry system and measuring method thereof
ActiveCN103308714AReduce light requirementsImprove recognition accuracyFluid speed measurementDigital imagingWater flow
The invention discloses an in-water color particle image velocimetry system comprising a river project model, color tracer particles, a color web camera, a POE (power over Ethernet) switch and a digital image processing device. The color tracer particles are evenly distributed in water flow of the river project model, the web camera mounted above a surface of the water flow of the river project model is connected with the POE switch connected with the digital image processing device comprising digital imaging processing software. The invention further provides a color particle image velocimetry measuring method. By the arrangement, the technical problems that a black and white video camera sets higher requirements for light condition and is prone to being affected by light noises, more error vectors appear in flow field data, so that measuring accuracy is affected are solved.
Owner:NANJING HYDRAULIC RES INST
Abrasion test method of air valve and seat ring
InactiveCN101398358AHigh impact strengthGet rid of the bondageMaterial strength using repeated/pulsating forcesInvestigating abrasion/wear resistanceCombustorControl engineering
The invention relates to a quick abrasion testing method in the field of power machinery technique, aiming at providing an abrasion testing method used for a valve and a seat ring which are used for an internal-combustion engine. The method comprises a calibration stage and a test stage; in the calibration stage, a valve base is provided with a valve acceleration sensor; a displacement sensor is arranged above a valve spring seat ring; an electromagnet coil gets the electricity; an upper bit machine records the dripping speed and distance of the valve and determines the power-on control strategy for the electromagnet; during the test stage, the valve is heated by an installed burner; and the upper bit machine determines the rotation speed control strategy of the cooling water pump of a water cooling system. The quick abrasion testing method can achieve extremely high impact frequency, and shorten the testing time; the dripping speed of the valve can be jointly determined by two different sensors and the accuracy of the test is improved; the temperature of the cylinder cover is kept at the temperature of the cylinder cover when the internal combustion machine works normally, thus ensuring the reliability of the testing conclusion. The parts are few, the structure is simple and the manufacture cost is low.
Owner:ZHEJIANG UNIV
Three-dimensional foot type and sole pressure integrated measuring instrument
ActiveCN108113120AWith 3D foot scanningFunctionalFoot measurement devicesDiagnostic recording/measuringKinematicsMeasuring instrument
The invention provides a three-dimensional foot type and sole pressure integrated measuring instrument. The three-dimensional foot type and sole pressure integrated measuring instrument comprises a measuring table, a data line, a power line and a computer, wherein the measuring table comprises an objective table, 3D true feeling camera sets, a sole pressure measuring plate, an indicator lamp stripand a master control circuit board, wherein the 3D true feeling camera sets are symmetrically mounted on the objective table to acquire three-dimensional foot type data; the sole pressure measuring plate is embedded in the center of the objective table to acquire sole pressure distribution data; the computer receives data acquired by the measuring table through the data line, data are subjected to treatment such as storage, editing, computing and visualization by integrated testing analyzing software mounted on the computer, and visualized display and application outputting of three-dimensional foot type and sole pressure distribution data are realized. By the three-dimensional foot type and sole pressure integrated measuring instrument, foot morphology and kinematic mechanical parametersof a user are synchronously measured and are analyzed in a fused manner, meanwhile, self-calibration can be implemented, measurement is facilitated, and parameters are abundant.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Digital substation testing simulation method
ActiveCN101980417AAny expansionDoes not increase the amount of calculationCircuit arrangementsData switching networksStructure of Management InformationClosed loop testing
The invention discloses digital substation testing simulation method. In the method, an IEC61850 standard digital dynamic testing simulation technology-based substation system testing method is adopted, namely a substation simulation model is established, and the actual motion is simulated for system closed-loop testing so as to detect the dynamic characteristics of a device to be detected. For the integrated design of the system, a frame structure consisting of a PCI board card and a multi-CPU desktop is adopted, and a system simulation testing device consisting of the multi-CPU desktop, a PCI bus-based IEC61850 communication card and a small signal and switching value interface card is established, wherein the multi-CPU desktop is a system control platform, and is used for performing processing such as drawing, simulation computation, man-machine interaction and the like; the PCI bus-based IEC61850 communication card provides a plurality of optical Ethernet ports to connect a plurality of protective devices and control equipment; and the protective devices receive MU data of the communication card, and the generated information such as switch position change and the like is returned to the desktop through the communication card to participate in electromagnetism transient calculation for the simulation model.
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
Abrasion test method of air valve and seat ring novel abrasion test system of valve and seat ring
InactiveCN101398359AHigh impact frequencyShorten test timeMaterial strength using repeated/pulsating forcesInvestigating abrasion/wear resistanceEngineeringCombustion
The invention relates to a quick abrasion testing system in the field of power machinery technique, aiming at providing a novel abrasion testing system used for a valve and a seat ring used for an internal combustion machine; the system comprises a cylinder cover, a valve, a valve spring and a valve seat ring; the valve is positioned on the cylinder cover; the valve seat ring is positioned between the valve and the cylinder cover; the valve rod of the valve passes through the cylinder cover; the end of the valve rod fixes the spring seat ring by a valve lock lamp; one end of the valve spring is supported on the cylinder cover and the other end thereof pushes against the spring seat ring; the system also comprises an electromagnet which is arranged on the cylinder cover and positioned at the lower part of the spring seat ring; the quick abrasion testing system can achieve extremely high impact frequency, and shorten the testing time; the dripping speed of the valve can be jointly determined by two different sensors and the accuracy of the test is improved; and the temperature of the cylinder cover is kept at the temperature of the cylinder cover when the internal combustion machine works normally, thus ensuring the reliability of the testing conclusion. The parts are few, the structure is simple and the manufacture cost is low.
Owner:ZHEJIANG UNIV
Ionized layer incoherent scattering radar simulation system
InactiveCN105182305ARaise the level of researchAccurate modelingWave based measurement systemsExtension setMATLAB
The invention provides an ionized layer incoherent scattering radar simulation system, which is characterized in that a modular design idea is adopted, the system is divided into a signal simulation module, an incoherent scattering spectrum simulation module, an ionized layer parameter analysis module, a radar power simulation module and an antenna array simulation module according to a radar actual system structure and functions of each extension set, module functions are basically the same as completing functions of each system extension set, transmission and sharing of data and information among the modules can be realized, and dynamic demonstration is carried out by using an MATLAB graphical user interface function. The ionized layer incoherent scattering radar simulation system well solves a problem that the incoherent scattering radar is small in number of research platform and difficult in test, and can help the technicists to improve abilities of analyzing and solving problems and an ability of carrying out radar equipment technical research.
Owner:NANCHANG UNIV
Optical waiting type plane imaging system for framing, scanning and simultaneous recording
ActiveCN101666970AImprove accuracyHigh precisionHigh-speed photographyOptical elementsTime informationImage plane
The invention relates to an optical waiting type plane imaging system for framing, scanning and simultaneous recording, comprising an objective lens, a waiting light splitter, two secondary light splitters, a framing device and a scanning device which are arranged corresponding to each secondary light splitter and a framing and scanning rotating mirror device. Two times of light splitting are realized by the waiting light splitter and the secondary light splitters, a framing optical path and a scanning optical path which are generated after light splitting both enter the framing and scanning rotating mirror device, and images are generated on a framing image plane and a scanning image plane respectively; as the framing optical path and the scanning optical path are provided with a commonobjective lens, the two paths have the same space datum and generate reflection images by the same rotating mirror, and the two paths have the same time datum, thus obtaining higher space informationand time information, high interpretation accuracy and high interpretation precision.
Owner:SHENZHEN UNIV
Polyamide acid fibrid, polyimide fibrid and preparation method of polyamide acid fibrid
ActiveCN105506769AHigh strengthHigh mechanical strengthMonocomponent synthetic polymer artificial filamentFiberPolyamide
The invention relates to the field of fiber pulp materials high in specific surface area, and discloses a preparation method of polyamide acid fibrid. The method includes the steps of firstly, making amine monomers and anhydride monomers react in polar solvent to generate a polyamide acid product; secondly, diluting the product obtained in the first step till polyamide acid has the concentration of 1-14% by weight and the viscosity smaller than 500 cp, injecting a diluted solution into a precipitator under the stirring conditions, wherein the precipitator is at least one of water, ethyl alcohol, methyl alcohol, acetone and methylbenzene. The invention further discloses the polyamide acid fibrid prepared through the method, polyimide fibrid and the preparation method of the polyamide acid fibrid. The prepared polyamide acid fibrid and the polyimide fibrid have large specific surface areas, and polyamide acid paper prepared with the prepared polyamide acid fibrid and the polyimide fibrid as the raw materials is excellent in high temperature resistance, mechanical property and insulating performance.
Owner:JIANGSU XIANNUO NEW MATERIAL TECH
Method for visually testing internal molding shrinkage characteristic of high polymer material
InactiveCN102928339ARaise the level of researchMaterial analysis by optical meansUsing optical meansPolymer scienceShell molding
The invention discloses a method for visually testing the internal molding shrinkage characteristic of a high polymer material, belonging to the field of high polymer molding. Through the change of the positions (before and after a product is shrunk) of characteristic points such as active carbon particles, hollow glass beeds and toners which are added into the product, with a static visualization means, the internal shrinkage distribution of the product is calculated by using specific image processing software in a coordinate mode, and the orientation distribution of the internal shrinkage of the product is systematically reflected in a mode that two-dimensional curves, contour line cloud charts and vector distribution diagrams are combined, so that the change rule of the internal shrinkage of the product is found, the molding shrinkage mechanism is discussed, and thereby the development of a precise molding technique of the high polymer material is promoted.
Owner:DALIAN UNIV OF TECH
Electric tractor double-motor power junction control device
InactiveCN109733174ASimple internal structurePlay a protective effectSpeed controllerElectric propulsion mountingClutch controlElectric machine
The invention discloses an electric tractor double-motor power junction control device and relates to the field of tractors. The control device comprises a wet clutch control oil way and a power junction gearbox. The wet clutch control oil way is connected according to a hydraulic oil way sequence. The power junction gearbox comprises two power input shafts, two power output shafts, a first wet clutch, an intermediate shaft and multiple pairs of gears. The wet clutch control oil way controls the wet clutch to be disengaged and engaged. The double-motor power junction control device can coordinate the working areas of two motors and also can conduct large torque output, the problem that an electric tractor is insufficient in power under a heavy-load working condition is effectively solved,meanwhile, work efficiency of the two motors is improved, different drive modes of the electric tractor are switched, and the dynamic property and economical efficiency of the electric tractor meet the requirements.
Owner:JIANGSU UNIV
Air foam flooding produced gas on-line inspection apparatus and process
ActiveCN105092779AGuarantee safe productionImprove research level and application effectMaterial analysisWellheadProcess engineering
An air foam flooding produced gas on-line inspection apparatus and process, and belongs to the technical field of oil extraction. An explosion-proof power supply 1 is connected to and provides power for a flow controller 4, a solenoid control valve 5, an O2, CO, CO2 and combustible gas detection transmitter 10, a GPRS network device 12 and all pipe insulation heating devices. A wellhead casing head gas is introduced into a flow controller 4 through a gas introduction pipe; the other end of the flow controller 4 is connected to the solenoid control valve 5 via line; the other end of the solenoid control valve 5 is connected a buffer tank 6 via line; the bottom of the buffer tank 6 is connected to an electromagnetic valve 8; a pipe on the upper part of the buffer tank 6 is connected to a gas filter 9; the other end of the gas filter 9 is connected to the O2, CO, CO2 and combustible gas detection transmitter 10 via a pipe; the O2, CO, CO2 and combustible gas detection transmitter 10 is connected to a data acquisition unit 11; the data acquisition unit 11 collects and transmits the test data to the GPRS network device 12 and transmits the data to the a computer software apparatus 7 in a control room.
Owner:PETROCHINA CO LTD
Interval forecasting method of heat supply load based on support vector machine and error estimation
InactiveCN102360430AImprove forecast accuracyImprove reliabilityCharacter and pattern recognitionSupport vector machinePower station
The invention discloses an interval forecasting method of a heat supply load based on a support vector machine and error estimation, relates to a method for forecasting the heat supply load, and aims to solve the problems of low forecasting accuracy and difficulty in application to heat-supply energy-saving reforming, heat power scheduling and control of a heat power station in the conventional interval forecasting method. The interval forecasting method of the heat supply load based on the support vector machine and the error estimation comprises the following steps of: firstly, on the basis of acquisition of sample data, establishing a support vector regression forecasting model, and performing point forecasting; secondly, on the basis of point forecasting, acquiring a forecasting error, and estimating an error interval; thirdly, with the point forecasting and the error interval, performing interval forecasting; and fourthly, evaluating forecasting effects of the point forecasting and the interval forecasting. The method provided by the invention can be directly applied to the heat-supply energy-saving reforming, the heat power scheduling and the control of the heat power station.
Owner:HARBIN INST OF TECH
Insulating oil heating system and method for transformer fire extinguishing true form test
ActiveCN110933792ARaise the level of researchImprove accuracyImmersion heating arrangementsOil canHeating oil
The invention discloses an insulating oil heating system for a transformer fire extinguishing true form test. The insulating oil heating system comprises a uniform heating / constant temperature devicewhich is arranged in an oil tank of a true form test transformer, a preheating device which is used for preheating the cold oil and then injecting the preheated cold oil into the oil tank, an oil supplementing device which is used for supplementing the cold oil, and a heating control module which is used for supplying power to the uniform heating / constant temperature device and the preheating device and controlling the heating power. The uniform heating / constant temperature device and the preheating device are both connected to the heating control module through power lines and control lines,a return pipe and a return oil pump are communicated between the preheating device and the oil tank, the oil supplementing device is communicated with the preheating device through a preheating oil pump, and the oil supplementing device and the preheating device are both communicated with a transformer oil conservator through oil conservator oil pumps. According to the method, the insulating oil can be uniformly heated to the temperature under the actual working condition, so that transformer oil true form fire extinguishing test data is more accurate, and the research level of a transformer fire extinguishing technology is improved; and meanwhile, the insulating oil can be recycled, and the test economy is high.
Owner:STATE GRID HUNAN ELECTRIC POWER +2
Multi-dimensional high-resolution ocean target real-time imager
PendingCN113406012AHigh resolutionRemove flareColor/spectral properties measurementsInformation processingOptical polarization
The invention discloses a multi-dimensional high-resolution ocean target real-time imager, belongs to the technical field of sea surface target detection and information transmission, and aims to solve the problem that a current multi-dimensional information acquisition instrument cannot simultaneously meet the requirements of long operating distance, good timeliness, high spatial and spectral resolution and full-polarization information acquisition. The imager is mainly composed of a precise pointing and control subsystem, an unobstructed telescopic subsystem, an infrared searching and tracking subsystem, a multi-dimensional information acquisition subsystem MDI, a multi-dimensional mass information processing subsystem and a peripheral subsystem. According to the invention, a multi-dimensional high-resolution real-time imaging instrument is planned to be developed, the functional limitation that high resolution and high timeliness cannot be realized due to the limitation of the principle of the existing multi-dimensional imaging instrument is broken through, high-spectrum and spatial resolution and full-polarization information required by sea surface target observation are realized, and simultaneous imaging is realized; the sea surface target observation capability of eliminating solar flares, penetrating sea fog and improving contrast is realized.
Owner:CHANGCHUN UNIV OF SCI & TECH
A method for designing the energy of high shock wave energy explosive for underwater use
ActiveCN109086538AReduce test intensityReduce research costsDesign optimisation/simulationExplosivesShock waveUnderwater
A method for designing the energy of underwater high shock wave energy explosive features that the composition of underwater explosive is changed, and the change rule of shock wave energy of underwater explosive is obtained by thermodynamic calculation and numerical simulation, from which the design of high shock wave energy explosive is optimized. The invention adopts numerical method to calculate shock wave energy of underwater explosive, which can provide beneficial technology for explosive energy design and reduce research cost.
Owner:XIAN MODERN CHEM RES INST
Low-pressure-ratio axial compressor model level performance calculation method
ActiveCN111503025AEffectively promote the test processRaise the level of researchPump componentsDesign optimisation/simulationHierarchical decompositionNumerical modeling
The invention provides a low-pressure-ratio axial compressor model level performance calculation method. The method is carried out according to the following steps of 1, collecting parameters: collecting environment parameters, flow parameters, inlet parameters, outlet parameters and early-stage preparation parameters of an axial compressor model level; 2, calculating overall performance parameters of the three-stage axial compressor model level: an overall energy head and overall variable efficiency; 3, obtaining a proportion coefficient of each stage of energy head and a proportion coefficient of variable efficiency; and 4, performing hierarchical calculation on the level performance parameters of each stage: according to the proportion coefficient of each stage of variable efficiency and the proportion coefficient of each stage of energy head, performing hierarchical decomposition on the overall performance parameters of the three-stage axial compressor model level obtained in the step 2. Through a multi-stage overall test, the decomposition calculation of each stage and the numerical simulation are combined to obtain relatively accurate axial compressor model level single-stageperformance parameters capable of guiding industrial application.
Owner:西安联创分布式可再生能源研究院有限公司
Method for extracting rice albumin and globulin mixed protein
ActiveCN105085605AHigh purityHigh extraction ratePeptide preparation methodsFreeze-dryingRice protein
The invention provides a method for extracting rice albumin and globulin mixed protein, relates to a method for extracting albumin and globulin mixed protein, and aims to solve the current problem that albumin or globulin in rice is difficult to separate and extract. The method comprises the following steps: 1, grinding rice into rice flour; 2, degreasing the rice flour with n-hexane for 3-5 times to obtain degreased rice flour; 3, preparing a protein extracting solution from the degreased rice flour by a salt dissolving method; 4, precipitating the protein from the protein extracting solution with a trichloroacetic acid solution; and 5, performing vacuum freeze-drying on the precipitate to obtain rice albumin and globulin mixed protein. The method can be used for extracting the rice albumin and globulin mixed protein simply, quickly and efficiently, and is applicable to industrial production; and the extraction rate of the extracted rice albumin and globulin mixed protein is over 97 percent, and the purity of the rice albumin and globulin mixed protein is over 90 percent. The method is used in the field of rice protein extraction.
Owner:HARBIN INST OF TECH
Method for making large-scale microcosmic simulation model
InactiveCN105628577BSolve the problem that the effective area is too smallRaise the level of researchPermeability/surface area analysisEngineeringMicroscopic scale
Owner:CHINA PETROLEUM & CHEM CORP +1
Waist motion bionic structure and bionic machine rat including waist motion bionic structure
The invention relates to the technical field of bionic structures, in particular to a waist motion bionic structure and a bionic machine rat including the waist motion bionic structure. The waist motion bionic structure aims at solving the problem that in the prior art, motion flexibility and structural compactness of a waist motion bionic structure in the prior art are poor. In order to achieve the aim, the waist motion bionic structure comprises a rack, a front drive device and a rear drive device, wherein the front drive device is connected to the front end of the rack in a pivot manner, and is used for driving a front limb at the front end of the rack to swing left and right and up and down; the rear drive device is connected to the rear end of the rack in a pivot manner and is used for driving a rear limb at the rear end of the rack to swing left and right and up and down. Through the technical scheme, motion flexibility and structure compactness of the waist motion bionic structure are improved, consistency of the waist motion bionic structure and an animal waist structure is improved, research of biologists, neuroscientists and brain researchers for the waist structure is facilitated, and the effective control over the behavior of the waist structure is achieved.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
High-flux medicine automatic screening device and method
InactiveCN110118863AReduce work intensityReduce experiment costBioreactor/fermenter combinationsBiological substance pretreatmentsComputer control systemAutomatic control
The invention provides a high-flux medicine automatic screening device and method. The automatic screening device comprises a three-dimensional moving device, an air channel system and an electrostatic field on-off control system; the three-dimensional moving device comprises four motor modules arranged at X, Y, and Z axial directions, a sprayer head and a baseplate platform ; the baseplate platform is arranged on an upper surface of an Y-axle motor module in a sliding manner; the sprayer head is arranged at a front end surface of the X-axle motor module and dead against the baseplate platform, and the three-dimensional moving device is controlled through a displacement control system; and the displacement system, the air channel system and the electrostatic field on-off control system arecontrolled through an upper computer control system. The device realizes the automatic control, the working intensity is reduced, the operation error is reduced, and the screening efficiency is improved; the technology for manufacturing micro-droplet through high-voltage electric field reduces the medicament dosage, and the experimental cost is greatly reduced, thereby satisfying a demand of quick, high-efficient and microscale medicine screening technology.
Owner:苏州永沁泉智能设备有限公司
Method for measuring relationship between soil infiltration wetting front and earth surface micro-topography
InactiveCN105136640AAccurate expressionRaising Awareness and ResearchPermeability/surface area analysisSoil scienceAtmospheric sciences
The invention discloses a method for measuring the relationship between soil infiltration wetting front and earth surface micro-topography. The method comprises the following steps: preparing a soil profile, setting an initial infiltration front, carrying out a test of artificially-simulated rainfall, carrying out space coordinate transformation on obtained image files by ArcGIS software, and analyzing the relationship between soil infiltration wetting front and earth surface contour line. The provided method can measure the wetting front during the soil infiltration process, is capable of describing the relationship between soil infiltration wetting front and earth surface micro-topography, and simply and precisely expresses the soil infiltration performance.
Owner:赵龙山
Method for measuring average reflection step length of light in detector
ActiveCN107389612AEasy to operateReduce mistakesScattering properties measurementsPhotometry using electric radiation detectorsUltrasound attenuationPhotomultiplier
The invention discloses a method for measuring the average reflection step length of light in a detector. The method comprises: 1) filling a selected detector with a medium to be detected, and arranging a photomultiplier tube, wherein the inner wall of the detector is a high reflection material using diffuse reflection as the main; 2) irradiating in the detector by using a selected light source, and collecting light signals with the photomultiplier tubes; 3) changing the reflection area of the inner wall of the detector, repeatedly performing the step 2), and fitting according to the collected light signals to obtain the effective attenuation lengths [lambda]' of photons in the detector under different reflection areas; and 4) according to the data obtained in the step 3), fitting the point corresponding to the ratio r of the reflection area to the detector inner wall area by using a formula 1 / [lambda]'=(1 / [lambda])-ln(f) / L-ln(r) / L, and measuring the average reflection step length L of the light in the detector filled with the medium to be detected through fitting. According to the present invention, the method has advantages of simple operation, low error, high precision, novel principle, and strong deep development and application value.
Owner:INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
Separation and verification method of different electron-acceptor phosphorus-accumulating bacteria in activated sludge
ActiveCN107142306APracticalRich Molecular Biology MethodsMicrobiological testing/measurementChemistryCarbon source
The invention discloses a separation and verification method of different electron-acceptor phosphorus-accumulating bacteria in activated sludge, and belongs to the technical field of biological sewage treatment. The separation and verification method can separate the DNA of different electron acceptor phosphorus-accumulating bacteria in the activated sludge system of a sewage treatment plant, and analyze the characteristics of florae on the gene level by adopting a molecular biological method. The separation and verification method comprises the following steps: adopting 13C-sodium acetate as the carbon source of an experimental group and 12C-sodium acetate as the carbon source of a control group, conducting anaerobic phosphorus release for 2 hours, respectively using oxygen, nitrate and nitrite as electron acceptors, conducting aerobic or anoxic phosphorus uptake culture for 3 hours, conducting culture for 8 cycles totally, conducting ultrahigh-speed centrifugal separation and purification to obtain DNA samples with different density levels, and determining and analyzing the flora structures of the phosphorus-accumulating bacteria when the electron acceptors are different by a molecular biological method. The invention provides the method for analyzing the electron acceptors required by different phosphorus-accumulating bacteria, and provides a theoretical support for the denitrification-strengthened dephosphorization process of the sewage treatment plant practically.
Owner:BEIJING UNIV OF TECH
Optical waiting type plane imaging system for framing, scanning and simultaneous recording
ActiveCN101666970BImprove accuracyHigh precisionHigh-speed photographyOptical elementsTime informationImage plane
Owner:SHENZHEN UNIV
Watershed wetland flood regulation and storage function quantitative evaluation method
ActiveCN112507635AImprove simulation accuracyQuantitative evaluation is goodClimate change adaptationDesign optimisation/simulationHydrometryRiver routing
The invention provides a watershed wetland flood regulation and storage function quantitative evaluation method. The method comprises the steps of 1, constructing a watershed hydrological model coupled with a wetland module; 2, performing basin hydrological process simulation under different wetland distribution situations according to the basin hydrological model, and obtaining corresponding riverway runoff based on different basin hydrological process simulation results; 3, determining a flood event according to a flood event threshold value and the corresponding river channel runoff under different wetland distribution situations; extracting flood characteristics according to the flood event; and 4, quantitatively evaluating the flood regulation and storage function of the watershed wetland according to the flood characteristics. Through the wetland flood regulation and storage function, the construction of the watershed hydrological model coupled with the wetland module is firstlycarried out, so that the hydrological process simulation precision is greatly improved, and the watershed wetland flood regulation and storage function and the space-time difference thereof can be finely and quantitatively evaluated.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
A distributed ptv flow field measurement system in water flow and its measurement method
ActiveCN103558409BSimple structureEasy to buildFluid speed measurementImaging dataWireless network interface controller
The invention discloses an underwater distributive PTV flow field measurement system and a measurement method thereof. The system comprises a river model, tracer particles, a set of smart cameras, a set of POE switches, a wireless router and a flow field computing system. The tracer particles are evenly distributed in water flows of the river model, the smart cameras are installed above the surfaces of the water flows of the river model, the smart cameras are connected with the POE switches, the POE switches are connected with the wireless router, the wireless router is communicated with a wireless local area network card, and the flow filed computing system is connected with the wireless local area network card. The invention further provides an underwater distributive PTV flow field speed measurement method based on wireless measurement. According to the method, an algorithm is embedded in the smart cameras for processing, the measurement speed is improved, measurement data can be directly output, and the technical problems that in the prior art, the quantity of output image data is large, wireless measurement cannot be achieved, and instantaneous measurement cannot be achieved due to low processing speed are solved.
Owner:NANJING HYDRAULIC RES INST
A Macroscopic Quantification Method for Residual Oil in Different Microcosmic Occurrence States
ActiveCN103206208BRaise the level of researchMeet the actual needs of developmentBorehole/well accessoriesRock coreMicroscopic observation
Owner:GASOLINEEUM EXPLORATION DEELOPMENT INST OF HENAN OILFIELD BRANCH SINOPEC
Test method for crop root development test observation room
PendingCN109406745AMeet growth needsEasy to replaceEarth material testingTesting waterBasementSoil science
The invention relates to a test method for a crop root development test observation room. Parallel tests of crop root systems are carried out in the observation room, and gravity water and combined water at different depths are extracted, so that the water and fertilizer condition research is carried out. The observation room is a basement, and a plurality of planting pipes, a gravity water collecting system and a combined water extracting system for the parallel tests are arranged in the basement; the tops of the planting pipes correspondingly penetrate through reserved holes formed in the top of the basement and are fixed to the ground, and the bottoms of the planting pipes are arranged in the basement through a support; the gravity water collecting system and the combined water extracting system are all arranged on a wall of the basement. The method has the advantages that the structural design is reasonable and installation is convenient, the crop growth space and the soil environment can be controlled, and growth requirements of the root systems can be met. Meanwhile, the parallel tests and research about the water and fertilizer condition of the gravity water and the combinedwater under different depths can be carried out, soil is convenient to replace, and comprehensive research can be conducted by applying a plurality of research methods.
Owner:河北省农林科学院农业信息与经济研究所
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