159results about How to "Reduce the difficulty of experiments" patented technology

The invention discloses a non-alignment error correction method used for a geomagnetic element measuring system, which comprises the following steps: (1) a rectangular table-board is arranged and a reference coordinate system for the rectangular table-board is established; (2) a magnetic sensor of the geomagnetic element measuring system and an accelerometer are encapsulated together in a non-magnetic regular hexahedron; two surfaces of the non-magnetic regular hexahedron are attached to two vertical surfaces of the rectangular table-board; and a regular hexahedron coordinate system is established for the non-magnetic regular hexahedron; (3) the non-magnetic regular hexahedron is turned for multiple times, and after multiple times of turning, the non-magnetic regular hexahedron is still attached to the rectangular table-board; (4) multiple sets of measurement values of the non-magnetic regular hexahedron and the accelerometer during the process of multiple times of turning are utilized, and through solving multiple non-linear equations simultaneously, the non-alignment error of the magnetic sensor and the non-alignment error of the accelerometer are calculated; (5) the non-alignment error between the magnetic sensor and an inertial navigation is indirectly calculated to correct the non-alignment error of the measurement value of the magnetic sensor. The method has the advantages of simple principle, facilitation of realization and operation, higher correction accuracy, etc.

The invention provides an experiment device and an experiment method for simulating thermal jet flow interference. The experiment device comprises a hypersonic wind tunnel, an experiment model, a bracket, a Laval internal nozzle, a model nozzle, a heater, an air storage tank, an air cylinder and a CF4 / SF6 gas cylinder, wherein an air source is compressed and expanded through the hypersonic wind tunnel and then becomes hypersonic airflow to provide an experiment with external flow; a CF4 / SF6 gas is mixed with air and then provides the experiment with internal jet flow; the specific heat ratio required by the experiment is obtained through controlling the molar mixing ratio and the temperature of the CF4 / SF6 gas and air, so that the requirements on specific heat ratio simulation of the jet flow in the experiment are met; and simulation of a jet flow interference experiment of the specific heat ratio of the jet flow is achieved in a common wind tunnel. The experiment method has the advantages of being relatively long experiment time, free of pollution, low in thermal load and low in cost, and therefore, the experiment method can be used as an effective means for evaluating the performance of the spray pipe of a hypersonic aerocraft.

The invention provides a gas compressor plane cascade experimental system with a suction baffle structure. The gas compressor plane cascade experimental system comprises a suction device and a plane cascade experimental device. The plane cascade experimental device comprises a left end plate, a right end plate, an upper baffle, a plurality of experimental blades and a lower baffle, wherein the upper baffle is arranged between the left end plate and the right end plate, and the multiple experimental blades are distributed at intervals. The upper baffle and the lower baffle are connected between the left end plate and the right end plate through fixing shafts. The upper baffle is provided with suction holes. Left end plate suction holes are formed in the left end plate, and right end plate suction holes are formed in the right end plate. The suction holes are connected with a vacuum pump through a pipeline. A three-hole probe 1 is arranged between the left end plate and the right end plate. In the experimental process, the upper baffle and the lower baffle are adjusted so that a cascade can be good in periodicity, the boundary layer of incoming flow is sucked through the left end plate suction holes and the right end plate suction holes, the influence area of the boundary layer is reduced, and uniform incoming flow is achieved. The gas compressor plane cascade experimental system with the suction baffle structure is an effective path for exploring improvement of the performance of a gas compressor, the influence of the boundary layer of the incoming flow is reduced, and meanwhile, the periodicity of the plane cascade is improved.

The invention discloses a modular animal digestive tract in-vitro simulation system and a human intestinal tract simulation method thereof. The modular animal digestive tract in-vitro simulation system comprises at least one animal digestive tract in-vitro simulation unit. Each animal digestive tract in-vitro simulation unit includes a frame, a reaction tank used for simulating a specific digestive tract cavity, and multiple function modules which can complete a specific and relatively independent task of intestinal tract simulation. Each frame is provided with multiple installation positions for installing the function modules and the reaction tank, and the function modules and the reaction tank are installed on the frame detachably. Each function module includes a sensor or a moving part, or includes both the sensor and the moving part. Each function module uses a separate Arduino nano 328 as a control chip, and is connected with an upper computer through a USB serial port. Each frame is equipped with a USB active hub. A USB is responsible for power supply to single chip microcomputers in the function modules and instruction transmission between upper and lower computers. Multiple function modules are integrated in one frame, so that the lab space is saved, the modules can be replaced rapidly, and a faulty module can be checked and replaced without shutdown.

The invention belongs to the technical field of magnetic measurement and particularly provides a geomagnetism vector system non-alignment correction method based on an axis rotating method. The method comprises the following steps that 1, a non-magnetic rotating table is arranged; 2, a magnetic sensor and an acceleration meter in a geomagnetism vector system are packaged into a non-magnetic regular hexahedron; 3, the non-magnetic regular hexahedron is arranged on a table board of the non-magnetic rotating table to ensure that the X-axis direction of the non-magnetic regular hexahedron is identical with the direction of a rotating shaft, and the rotating shaft rotates around the X-axis for N1 times to obtain N1 sets of measurement values of the magnetic sensor and the acceleration meter; 4, the Z-axis direction of the non-magnetic regular hexahedron is kept to be identical with the direction of the rotating shaft, and the rotating shaft rotates around the Z-axis for N2 times to obtain N2 sets of measurement values of the magnetic sensor and the acceleration meter; 5, the non-alignment angle from the magnetic sensor to the non-magnetic regular hexahedron and the non-alignment angle from the acceleration meter to the non-magnetic regular hexahedron are calculated respectively; 6, correction is finished by determining the coordinate converting relation between the magnetic sensor and the acceleration meter.

The invention discloses a test device and method for simulating the seepage condition of the landslide of an earth-rock dam. The test device comprises a test chamber, a water inlet system, a flow leakage simulating system, a measuring system and an earth-rock dam model, wherein the earth-rock dam model is located in the test chamber; the water inlet system is located at the upper part of the left side of the upstream side of the test chamber, and is used for importing experimental water; the flow leakage simulating system is located at the bottom of the test chamber, and is used for simulating a flow leakage process under various working conditions; and the measuring system comprises a control box, an upstream water level gauge, a downstream water level gauge, an electric survey electrode, an osmometer, a connecting line, a control box platform and a water level gauge platform, and is used for realizing real-time measurement of various monitoring data. According to the test device disclosed by the invention, the landslide process of a side slope under the condition that the water level is suddenly changed can be truly simulated; dynamic monitoring of the change of the seepage condition is realized; and dynamic space seepage condition information is provided for the research on the change of instantaneous seepage conditions of the landslide under the condition that the water level is suddenly changed.

The invention relates to a high-sensitivity quantitative determination method of cardiac troponin I, and belongs to the technical field of biomedical detection. According to the detection method, specific recognition is conducted on the cardiac troponin I through an aptamer, and accurate and sensitive quantitative detection on cTnI is achieved by means of a rolling circle amplification technology of nucleic acid and a graphene oxide-based fluorescence resonance energy transfer technology; the detection method has the advantages of being good in specificity, high in sensitivity, easy and convenient to operate, low in cost and the like, and the clinical test requirements are met.

The invention discloses a method for correcting the vortex light wave front distortion based on a phase difference algorithm. The method is specifically implemented according to the following steps of1, collecting the light intensity information of an initial light field and a distorted light field; 2, performing the adaptive phase correction on a distorted vortex light beam, solving the phase ofthe distorted vortex light beam, and 2.3, correcting the distorted vortex light beam; and step 3, evaluating the correction effect of the vortex light, thereby comparing the spiral spectrograms of the vortex light beams with different topological charges 1 before and after correction, and analyzing the mode crosstalk of the vortex light before and after correction. According to the method for correcting the vortex light wave front distortion based on the phase difference algorithm, the experiment difficulty of the wave front correction technology is reduced, and the vortex light beam can be comprehensively and effectively corrected.

The invention relates to an isolated organ perfusion system, which comprises a liquid storage container, a centrifugal pump, a membrane lung, a first peristaltic pump, a leukocyte filter, a hemodialyzer and a waste liquid bag, wherein the liquid inlet end of the first peristaltic pump is communicated with the liquid storage container through a pipeline, the liquid outlet end of the first peristaltic pump is communicated with the liquid inlet end of the hemodialyzer through a pipeline, the liquid outlet end of the hemodialyzer is communicated with the liquid storage container through a pipeline, the waste discharge end of the hemodialyzer is communicated with the waste liquid bag through a pipeline, the liquid storage container, the first peristaltic pump and the hemodialyzer form a filtering circulation auxiliary path, and the leukocyte filter is arranged on the filtering circulation auxiliary path. According to the invention, when the leukocyte filter is blocked due to long-time work,the leukocyte filter can block the filtering circulation auxiliary path and cannot block the perfusion circulation main path, the perfusion circulation main path can still continue to work at the moment, the in-vitro organs can be continuously protected, and the leukocyte filter on the filtering circulation auxiliary path can be replaced in time.

The invention relates to the technical field of semiconductors and nano materials, and particularly relates to a preparation method of a polyhedronal CdSe / ZnSe / ZnS core-shell structure quantum dot capable of strong red and yellow light. The preparation method comprises the following steps: filling a TOP-Se solution into a cadmium solution; when the quantum dot is grown to the required size, filling an ODPA-Zn solution; performing posttreatment on the reaction solution to obtain the quantum dot; filling the toluene solution of the quantum dot into a zinc source solution; filling a TOP-S solution, preserving heat, and performing posttreatment on the reaction solution, thus obtaining the quantum dot. According to the quantum dot and the preparation method, the experimental operations are simple, the ZnSe / ZnS-coated CdSe quantum dot can be obtained only by two-step synthesis through three-times filling, the reaction is fast, and the yield is high; the shape of the obtained CdSe / ZnSe can be conveniently regulated from uniform spheres to uniform rice grains through regulating the reaction conditions, the coating reaction is fast, and the obtained quantum dot has high light-emitting intensity within the red light-near infrared range.

The invention discloses a method and a device for regulating the emission surface of an ultrasonic transducer probe to be parallel to a reflecting plate. Two laser emitters are arranged at one side of the probe, and a laser receiving point sensor is correspondingly arranged on the reflecting plate. In actual application process, when the parallelism degree between the emission surface of the ultrasonic transducer probe and the ultrasonic reflecting plate deviates, and the upper, lower, left and right positions of the reflecting plate are repeatedly regulated till laser narrow beams emitted from the emission surface of the ultrasonic transducer probe realign to the laser receiving point sensor in the reflecting plate, thus the parallelism between the emission surface of the ultrasonic transducer probe and the reflecting plate can be determined. The invention has the advantages of convenient regulation, time and labor saving and high accuracy, reduces experiment preparation working intensity of instruction teachers and the experimental difficulty of students and improves the experimental efficiency and effect.

The invention provides a joint composition and application thereof. The joint composition comprises a first joint and a second joint, wherein the first joint is a single-chain joint and contains a UID(unique identifier) sequence and a segment of single-chain nucleotide; the 3'-end of the first joint has sealed modification; the second joint is a double-chain joint formed by a long chain of nucleic acid and a short chain of nucleic acid in complementary pairing; the 5'-end of the long chain of the nucleic acid of the second joint has phosphoric acid modification; and the 5'-end of the short chain of the nucleic acid of the second joint does not undergo phosphorylation modification. Since a synthesized joint with the UID sequence is directly introduced, and the UID sequence is introduced into a double-chain library through extension, a tedious joint preparation process in a conventional UID joint database construction technique is avoided, the experiment efficiency can be improved, theexperiment difficulties can be reduced, and the experiment cost can be reduced.

The temperature control one dimensional optical crystalline dynamic optical crystalline generating method has a heating oven connected to the multi film one dimensional optical crystalline, with the temperature of the one dimensional crystalline changing with the temperature changing of the heating oven, and the resulted refraction rate change of the film material, forming dynamic optical crystalline with the offset of the photon forbidden band. It only relates to one dimensional optical crystalline generating dynamic ones with greatly reduced experiment difficulty and greatly increased flexibility.

The invention provides a constant-speed blurred image construction method and device based on splicing of two frames of static images, belonging to an image movement analyzing part in the common image data processing or generating field. The method comprises the following steps of: deducing a blurred distance of a target under an actual condition according to the target in an actual scene, an optical system and parameters of an image sensor, and inversely deducing to an image space to obtain a distance of positions of the target in two spaces; and carrying out two times of imaging on a substituted target of the positions of the two spaces and constructing a constant-speed blurred image according to image information. The substituted target in the device comprises two parts including a static background and a movable target; and the movable target can do two-dimensional movement in a view field range of a substituted optical system in a direction which is vertical to an optical axis of the device. The method and the device can utilize a room-temperature visible light target to equivalently replace a high-temperature target; a low-speed movement is matched with two times of imaging to equivalently replace a high-speed movement, so that the experiment difficulty is reduced and the experiment safety is improved; and a plurality of groups of experiment data are easy to obtain and the experiment cost is greatly reduced.

The invention discloses a CT and X-ray luminescence computed dual-mode synchronous tomography method. Small animal X-ray luminescence computed tomography and computed tomography (CT) can be achieved synchronously, and a more accurate imaging object anatomical structure and molecular imaging information are provided. It is guaranteed that an XLCT projection and a CT projection are collected at the same location and same time by reducing the CT projection angle number and setting the CT projection angle number to be the same as that of the XLCT or be in a diploid relation with that of the XLCT; meanwhile, by means of a compressive sensing principle, a few-angle reconstruction algorithm achieving image total variation minimization is adopted for the CT projection, and a precondition matrix and wavelet transformation are introduced into XLCT iteration reconstruction so as to reduce ill conditioning of reconstruction. According to the CT and X-ray luminescence computed dual-mode synchronous tomography method, synchronous tomography of CT / XLCT can be achieved, dual-mode tomography processes are simplified, the experimental difficulty is reduced, the imaging time is reduced, the experimental failure rate is decreased, a radiation dosage is decreased, an error caused by objecting moving in the imaging process is avoided, and image registration and fusion difficulties are reduced.

The invention discloses a horizontal well sand-water co-production and control and mining well completion multifunctional experimental system and an experimental method thereof. The experimental system comprises a central control system and further comprises a liquid storage tank, a water pump, a reservoir simulation unit, a transparent shaft, a sand-liquid separation sand collector and a backflowpump which are sequentially connected through pipelines. The experimental method comprises a horizontal well non-uniform water outlet profile and a dynamic evolution simulation experiment and a horizontal well sand-water control horizontal well comprehensive flow simulation experiment thereof, a horizontal well sand-water co-production profile and a dynamic evolution simulation experiment thereof, a horizontal well non-uniform sand production profile and a dynamic evolution simulation experiment thereof, a horizontal well circulating gravel packing sand prevention process simulation experiment and various experiments, a series of experiments are carried out, more accurate mathematical simulation calculation results are obtained, important scientific value and engineering guiding significance are provided for improving horizontal well development effects of oil and gas reservoirs, and important reference values are provided for horizontal well development of unconventional oil gas andnatural gas hydrate reservoirs.

The invention discloses a mould for manufacturing a three-dimensional compound rock stratum circular tunnel and a using method thereof. The mould comprises a square bottom plate, four baffles and a plurality of partition plates, and the baffles are fixed at the periphery of the bottom plate through bolts; the two sides of the baffles are each provided with a plurality of wedge grooves of two inclined angles; the center of the bottom plate is provided with a hollow cylinder, and the outer side of the hollow cylinder is provided with inserting grooves corresponding to the wedge grooves formed in the baffles; the partition plates are obliquely arranged on the bottom plate, and the two ends of each partition plate are inserted into the wedge grooves of every two adjacent baffles, or one end of each partition plate is inserted into the corresponding wedge groove, and the other end of the partition plate is inserted into the corresponding inserting groove. According to the mould, through cooperation of the wedge grooves formed in the baffles with the partition plates and the central cylinder, pouring of compound rock strata of space different inclined angles and different distances can be achieved; the rock stratum manufacturing effect is good, the inclined angles and space distances can be controlled precisely, the experimental difficulty and experimental errors are greatly reduced, and the experimental precision is improved.

The invention belongs to the technical field of a micro-fluidic chip, and in particular relates to a simple micro-fluidic chip for cytological analysis and a cell analysis method. The simple micro-fluidic chip comprises a basal layer and a cell culture layer which is arranged on the basal layer, wherein liquid storage tanks, which are located in a same plane, are arranged on the cell culture layer; a micro-channel is additionally arranged on the cell culture layer; and the bottoms of the at least two liquid storage tanks communicate by virtue of the micro-channel. The simple micro-fluidic chip is applied to cell culture and cytological analysis is carried out on cells cultured in the micro-channel of the micro-fluidic chip; and compared with an existing micro-fluidic chip, the micro-fluidic chip disclosed by the invention is easier to be adopted by general biology laboratories for processing and for the operations of cell culture and cell analysis.

The invention discloses a centrifugal pump fault diagnosis method and system. The method comprises the following steps that S1, a vibration signal of a centrifugal pump is obtained; S2, the vibrationsignal is preprocessed, and a denoising signal is obtained; S3, a time domain feature parameter and an energy feature parameter of the denoising signal are extracted; S4, a centrifugal pump diagnosissimulation experiment system is built, time domain feature parameters and energy feature parameters in different modes are obtained, and a fault detection model is built; S5, the time domain feature parameters and the energy feature parameters in the step S4 are integrated and subjected to dimensionality reduction, the time domain feature parameters and the energy feature parameters, subjected todimensionality reduction, of the to-be-detected centrifugal pump are detected by the fault detection model, the fault detection model outputs fault categories, the classification accuracy rate of thefault detection model can be effectively increased, and the fault categories and positions are distinguished.

The invention provides a light-fractured fluorescence-labeling reversible terminal compound and use thereof in DNA (Deoxyribonucleic Acid) or RNA (Ribonucleic Acid) sequencing. According to the light-fractured fluorescence-labeling reversible terminal compound and the use thereof in the DNA or RNA sequencing, a light-fractured group is adopted as an inhibition group, and the inhibition group is disconnected from a basic group under the irradiation of certain wavelength; the departure process does not need the assistance of special catalysts or reducers and the like, and side reaction of assistant reagents with DNA polymerase and the basic group cannot occur, so that reversible termination is realized under mild conditions; and in addition, the departure process is free of any interference to a sequencing process, so that sequencing for long-segment single molecules is facilitated.

The drive power supply in high frequency combined with piezoelectric transducer generates ultrasonic coupled to acousto-optic crystal. When ultrasonic passes through the acousto-optic crystal, refractive index of material is modulated by strain presents cyclic variation. Acousto-optic crystal possesses photon band gap. Following modulation, photon band gap is changed so as to become dynamic photon crystal.

The invention discloses a single-channel tunable filter in a visible band based on one-dimensional photonic crystals. The filter consists of the two parallel and structurally identical one-dimensional photonic crystals D1 and D2 of [A / B]3 and a thickness-adjustable air defect layer C arranged between the two one-dimensional photonic crystals, wherein at least one of the one-dimensional photonic crystals can be moved so as to adjust the thickness d3 of the air defect layer C, so that a filtering channel of the filter changes in position along with the thickness so as to form the tunable filter. The filter disclosed by the invention has a simple structure, various dielectric materials can be combined together according to different thickness ratios so as to be applied to the filter, and the filter can be used flexibly and simply, has a good filtering characteristic and excellent application prospect in the field of optical communications.

The invention relates to an automatic continuous monitoring system for subway deep tunnel engineering construction safety, which belongs to the field of tunnel construction safety monitoring and earlywarning, and comprises a sensor unit, a data acquisition and transmission unit, a data processing and control unit and a construction safety evaluation program module, the sensor unit collects displacement, strain, settlement and inclination angle monitoring information; the data acquisition and transmission unit comprises a sensor wireless data transceiver and a wireless data relay transceiver and is used for wirelessly transmitting and receiving inclination angle monitoring information among all the units; the data processing and control unit comprises a computer, and the construction safety assessment program module performs wavelet packet analysis on at least one of displacement, strain, settlement and inclination angle monitoring information data when executed by the computer, and identifies the occurrence time, damage position and damage degree of tunnel structure damage. The method has the advantages of real-time performance, convenience, high efficiency and accuracy.

The invention discloses a device for measuring supercritical and gaseous hydrocarbon fuel dense flow. The device comprises more than two sonic nozzles in serial connection, and each nozzle comprises an isometric straight section, a shrinkage section, a throttling throat portion and an expansion section; the isometric straight section of the first sonic nozzle is connected with an outlet of a hydrocarbon fuel heating device; each sonic nozzle reaches the sonic speed at the corresponding throat portion. The measuring method includes the steps: firstly, heating a to-be-measured fuel to a temperature about To and feeding the heated to-be-measured fuel; secondly, measuring an inlet pressure intensity P'm and a temperature T'm of the isometric straight section of a sonic nozzle m; thirdly, calculating a dense flow value of the to-be-measured fuel under the inlet pressure intensity P'm and the temperature T'm of the isometric straight section of the sonic nozzle m according to an equation: Mm=m / Am, wherein Am refers to the throat area of the sonic nozzle m. Using the device and the method can accurately measure the dense flow of the supercritical and gaseous hydrocarbon fuel reaching a 'choked' state under different state points with low cost.

The invention discloses a passive light source monitoring method suitable for a twin-field protocol. The method comprises the following steps: acquiring signal light and idle light obtained by splitting a light pulse subjected to intensity modulation; dividing the idle light into two light beams, detecting the two light beams, and obtaining four different counting events according to a detection result; estimating the parameters of the signal light through four different counting events so as to obtain a safe coding rate under a untrusted light source. Parameters of devices in a light source monitoring module do not need to be adjusted, the experiment difficulty is reduced, and safety reduction caused by modulation errors is avoided. The method is introduced by taking a twin-field quantum key distribution protocol as an example, is not only limited to be applied to a quantum key distribution process of the twin-field protocol, but also is suitable for quantum key distribution and quantum communication processes involving an untrusted light source, such as a BB84 protocol and a measurement equipment irrelevant protocol.

The invention discloses a method for detecting the feather degradation rate, and belongs to the technical field of feather degradation rate detection methods. The method comprises the following steps:drying a nylon bag to a constant weight, weighing the weight of the nylon bag, and recording the weight as M1; cleaning feathers, drying the feathers, crushing the feathers, and sieving the crushed feathers to obtain feather powder; weighing the feather powder, placing the feather powder in the nylon bag, sealing the nylon bag, drying the nylon bag containing the feather powder to a constant weight, weighing the weight, and recording the weight as M2; immersing the nylon bag in a liquid medium, inoculating the liquid medium with a bacterial liquid, performing fermentation, taking out the nylon bag after the fermentation, adding distilled water to immerse the nylon bag, placing a container in a water bath shaker, performing cleaning, repeating above steps multiple times, drying the cleanednylon bag, weighing the weight of the nylon bag, and recording the weight as M3; and calculating the feather degradation rate according to a formula. The method has the advantages of accuracy in thedetection result of the feather degradation rate, good parallelism and repeatability, simplicity in operation, and high detection efficiency, is suitable for evaluating the ability of microorganisms to degrade feathers, or is used for studying the degradation of feathers by the microorganisms.

The invention discloses an IC-RT-LAMP kit used for specific detection of LiLy mottlt virus (LMoV), and a detection method thereof. The IC-RT-LAMP kit mainly comprises a specific LMoV antibody IgG, a specific RT reverse primer LMoV-R, a specific LAMP primer pair, a first chain cDNA synthesis reagent, an LAMP amplification reaction reagent, a fluorescent dye detection solution, a negative control, and a positive control; the specific LAMP primer pair is composed of a forward outer primer F3, a reverse outer primer B3, a forward inner primer FIP, a reverse inner primer BIP, a forward loop primerLF, and a reverse loop primer LB; the negative control is ddH2O, the positive control is Lilium davidii LMoV CP gene standard substance. In the detection method, extraction of RNA is not needed, no molecular biology profession instrument such as enzyme-labeled instrument, PCR instrument, or fluorescent quantitation PCR instrument is needed, amplification reaction can be completed in constant temperature water bath, the specificity and the sensitivity are high, operation is convenient, the applicability is high, and the IC-RT-LAMP kit can be used in monitoring of infection, diffusion, and epidemic of lily LMoV, and is suitable for popularization.

The invention relates to a multi-working-condition power system performance prediction method based on Gaussian process regression, and the method comprises the following steps: 1), collecting conventional working condition data, preprocessing the data to acquire a training data set, and selecting a Gaussian regression process kernel function; 2) training a Gaussian process regression model, namely determining hyper-parameters of the Gaussian process regression model; 3) obtaining a next sampling point by adopting a sequential sampling algorithm, and adding the next sampling point into the conventional working condition data to obtain an augmented working condition data set; and 4) based on the prediction result and the augmented working condition data set, judging whether a stop condition is satisfied, if not, taking the augmented working condition data set as a new training data set and then returning to the step 2), and if so, outputting the prediction result. Compared with the prior art, the method has the advantages of low cost, multi-working condition and extreme working condition prediction and the like.

The invention relates to a method for accurately and efficiently testing contents of platinum and palladium in ore and belongs to testing methods for ore samples with platinum and palladium. The method comprises the following steps: enriching platinum and palladium in a sample by using a fire assaying method, carrying out simple grinding treatment on a lead buckle obtained by using the fire assaying method, cutting into a fine thread shape, dissolving lead threads conveniently with a nitric acid solution of 1:3, after the lead threads are dissolved and clarified, putting hydrochloric acid intothe solution so as to obtain an aqua regia system, continuously dissolving undissolved platinum and palladium, filtering so as to remove lead precipitate, fixing the volume of the filtrate, and testing the contents of platinum and palladium through ICP (Inductively Coupled Plasma). By adopting the method, a fire assaying ash blowing process is avoided, the cost is reduced, the recycling rate of the platinum and the palladium is increased, damage of lead smoke to the environment and human bodies is reduced, accurate and stable testing results are finally ensured, experiment steps are reduced,the testing accuracy is improved, and the working efficiency is effectively improved.

The invention belongs to the technical field of dynamic mechanics performance experimental equipment for materials and in particular relates to an electromagnetic spinning type split-Hopkinson torsional bar. The electromagnetic spinning type split-Hopkinson torsional bar comprises an incident bar, a transmission bar and test pieces and further comprises a cylindrical fixed frame, wherein the testpieces are arranged at adjacent ends of the incident bar and the transmission bar; the fixed frame is coaxially arranged at the overhanging end of the incident bar; a plurality of rotating blades arefixed on the incident bar; the rotating blades are pushed by a pulsed electromagnetic loader arranged on the inner side of the fixed frame; and the pulsed electromagnetic loader is electrically connected with a transient power supply pack and a control component. According to the split-Hopkinson torsional bar disclosed by the invention, the pressure is applied to the rotating blades by utilizing the pulsed electromagnetic loader, so that the defects of the conventional pre-energy storage type split-Hopkinson torsional bars, explosive-driven split-Hopkinson torsional bar devices and T-shaped split-Hopkinson torsional bar devices are overcome, the experimental difficulty is greatly reduced, and the experimental efficiency is greatly improved.