16results about How to "Analysis method is simple" patented technology

The invention discloses a crack propagation simulation analysis method based on a real-structure thermal barrier coating under cyclic load, which comprises the following steps: creating a finite element model according to a thermal barrier coating sample; setting material attributes and section characteristics in the finite element model; after parameters are set, a thermal cycle load is applied to the surface of the finite element model, analysis is carried out after grid division, and an Odb file is obtained; and copying the finite element model, taking the Odb file as a boundary condition, and carrying out thermal-mechanical coupling to obtain thermal stress and crack expansion conditions after thermal circulation. The analysis method is simple, the real service condition and the microstructure are fitted, the expected research effect is achieved for finite element simulation, and accurate simulation data can be obtained.

The invention discloses a ball game video analysis method and system, electronic equipment and a storage medium, and relates to the technical field of ball game video analysis, and the method comprises the steps: obtaining a target ball game video, each video frame in the target ball game video containing a timestamp; each video frame in the target ball game video is identified, the position of each human body key point of each player at each moment and the position of the ball at each moment are obtained, and the timestamps correspond to the moments in a one-to-one mode. By analyzing the target ball game video, the position of each human body key point of each player and the position of the ball can be accurately and efficiently captured in real time, dependence on manual operation is reduced, instant feedback can be provided for coaches and players, and data support is provided for optimizing training strategies and competition strategies.

The invention is applicable to the technical field of soil detection, and particularly provides an analysis method for gradually and continuously extracting a silicon form in soil, which adopts a step-by-step continuous extraction method and sequentially adopts an acetic acid-sodium acetate solution, hydrogen peroxide, an acetic acid-sodium acetate solution, a hydroxylamine hydrochloride solution and a sodium hydroxide solution as extracting agents. The method comprises the following steps: fully oscillating with a soil sample to extract different forms of silicon, and determining the silicon content by using a silicon molybdenum blue colorimetric method, so that the content of the silicon in each form, including effective silicon, organic combined silicon, iron and manganese oxide combined silicon and amorphous silicon, in the soil can be rapidly detected. And the content of amorphous silicon in the soil can be obtained. The soil silicon form analysis method is simplified, the detection efficiency is improved, and a theoretical basis is provided for knowing the soil silicon supply capacity and evaluating the silicon nutrition effect in the soil.

The invention discloses a method for stably controlling nitrogen content in steel by adopting a vacuum induction furnace, which belongs to the technical field of ferrous metallurgy, and is mainly characterized in that the nitrogen content in the steel is stably and accurately controlled by adopting the vacuum induction furnace through stably controlling a smelting process and adding different alloys in combination with the characteristics and yield conditions of different nitrogen-containing alloys. A foundation is laid for accurately ensuring the nitrogen content in the steel.

The application provides a converter valve area short-circuit fault positioning method, device, equipment and medium, the method comprises the following steps: dividing the converter valve fault into eight typical valve area short-circuit faults; RTDS simulation analysis, according to the different converter protection action results, dividing into three types of protection actions, giving the typical fault characteristic quantity of the valve difference protection action for positioning the valve area fault and the eight typical valve area short-circuit quick criterion; according to whether the actual converter protection action occurs in the rectifying station or the inverting station, confirming the valve area short-circuit fault occurring station; according to the converter protection action event of the monitoring background, confirming the converter protection action type and the valve area fault converter bridge; calling the built-in fault recording of the DC control protection, analyzing the converter protection action waveform, analyzing the fault characteristics of the current waveform of the valve side of the converter bridge and the outlet current waveform of the DC side, positioning the valve area short-circuit fault point according to the typical fault characteristic quantity of the valve difference protection action and the eight typical valve area short-circuit quick criterion; and has the advantages of fast positioning speed and simple analysis method.

The invention discloses a method for detecting ferrous oxide in sintered ore, which is characterized by comprising the following steps of: (1) grinding a certain amount of sintered ore to be detected by using a grinding machine to prepare a sample to be detected with a certain granularity; (2) preparing the prepared to-be-tested sample into a to-be-tested tabletting sample through a press machine; and (3) placing the prepared tabletting sample to be measured in a sample box of an X-ray fluorescence spectrophotometer, and measuring to obtain the content of ferrous oxide. The invention provides the method for detecting the ferrous oxide in the sintered ore by adopting the X-ray fluorescence spectrophotometer, the analysis method is simple and easy to master, the analysis speed is high, and the field production requirement is met.

The utility model relates to the field of aircraft body structures, and provides a truss type aircraft cargo hold floor structure and an aircraft, the cargo hold floor structure comprises a fuselage frame, a truss, a floor cross beam, fuselage frame connecting nodes, floor cross beam connecting nodes and a floor; the floor beams are arranged on the upper portion of the machine body frame, and the two ends of each floor beam are fixedly connected with the machine body frame. The truss comprises a plurality of stand columns, one ends of the stand columns are connected with the fuselage frame through fuselage frame connecting nodes, and the other ends of the stand columns are connected with the floor cross beams through floor cross beam connecting nodes. The stand columns can rotate around the fuselage frame connecting joints or the floor beam connecting joints. A triangular structure is formed between every two adjacent stand columns and the machine body frame or the floor beam. According to the utility model, the assembly process is simplified, and the production efficiency is improved. And the connecting rotating shafts are adopted at the connecting positions of the truss, the fuselage frame and the floor cross beam, so that the connecting positions only transmit tension and compression loads, and the situation that the positions are insufficient in connection due to large bending moment of the bottom frame is avoided.

The present invention discloses a method for extracting network information of mobile applications based on heuristic dynamic analysis, and belongs to the field of network information security technology. The present invention solves the problem that it is difficult for traditional dynamic network analysis methods and static network analysis methods in the prior art to fully extract effective network feature information for APPs; the present invention obtains program source code by reverse engineering the apk file of the application to be analyzed, traverses the key positions related to network information in the obtained reverse results, extracts and outputs static heuristic information and static network feature data; generates original traffic based on random action clicks and control coordinates, and realizes real-time decryption of common protocol traffic through an agent-based method, extracts relevant protocol feature parameters in plaintext and ciphertext traffic to obtain dynamic network feature data, cleans static network string variable results and dynamic network analysis results, and outputs the final results. The present invention effectively improves the efficiency of traffic generation and analysis, and can be applied to APP testing.

The invention relates to the technical field of chemical detection, in particular to a method for analyzing sample components containing one or more of 1, 4-cyclohexanedimethanol, dimethyl 1, 4-cyclohexanedicarboxylate and dimethyl terephthalate. The analysis method comprises the following steps: sample pretreatment: pretreating a sample to obtain a liquid without mechanical impurities as a sample to be detected; determining and analyzing a to-be-detected sample: injecting the to-be-detected sample into a gas chromatograph for detection, and determining the nature by using an external standard method; the detection conditions are as follows: the detector is FID, and the temperature of the FID is 295-320 DEG C. The analysis method disclosed by the invention is simple, good in reproducibility, high in sensitivity, good in stability, simple to operate and high in analysis speed, can meet the analysis requirements of 1, 4-cyclohexanedimethanol, raw materials thereof and raw material hydrogenation products or samples containing or partially containing similar components, and omits the tedious operation of selecting and adding internal standard substances.

The invention discloses a method for modifying inclusions in high-nitrogen steel by adopting a rare earth cerium element, the inclusions in the high-nitrogen steel are taken as a research basis, a vacuum induction furnace is adopted for smelting the high-nitrogen steel, and the content of rare earth cerium in the high-nitrogen steel is controlled by adding a rare earth cerium iron alloy, and the components, morphology, size and the like of the inclusions in the high-nitrogen steel are modified. It is guaranteed that the inclusions in the high-nitrogen steel are fine and dispersed, and technical support is provided for stable control over the state of the inclusions in the high-nitrogen steel in industrial production. On the premise that the nitrogen content of the high-nitrogen steel is 100-200 ppm, a certain amount of rare earth cerium element is added according to the cerium content condition and the rare earth yield of the rare earth cerium-iron alloy, so that the components, the morphology, the size and the like of inclusions in the high-nitrogen steel are modified, it is guaranteed that the inclusions in the high-nitrogen steel are fine and dispersed, and the problem of control over the inclusions in the high-nitrogen steel is solved.

The invention discloses an analysis method for precolumn derivatization of a hydrogenation impurity of a melogabalin besylate intermediate, the melogabalin besylate intermediate is MB-2, and the hydrogenation impurity in the melogabalin besylate intermediate is MB-2A, the analysis method comprises the following steps: (1) using a derivatization reagent to perform precolumn derivatization on the melogabalin besylate intermediate; carrying out derivative reaction on the melogabalin besylate intermediate under the catalysis of alkali to obtain derivative reaction liquid; the derivatization reagent is o-phthalaldehyde, fluorenyl methyl chloroformate or 2, 4-dinitrofluorobenzene; and (2) detecting the derivative reaction liquid by using a high performance liquid chromatography-UV detector to obtain the content of the hydrogenated impurities in the melogabalin besylate intermediate. According to the analysis method, the content of MB-2A in MB-2 can be effectively separated and accurately quantified, the accuracy is high, the detection line is low, and the method is high in durability. # imgabs0 #

The present invention relates to an analysis method for the enantiomeric structure of amino acid derivatives based on natamycin, comprising the following steps: S1, mixing the standard of amino acid derivative enantiomers and natamycin or natamycin and p-toluenesulfonic acid, and then adding a solvent to prepare a binary or ternary mixture solution containing water; S2, using an ion source to generate corresponding non-covalent complex ions in the mixture solution; S3, using an ion mobility spectrometer to measure the ion mobility of the non-covalent complex ions, and according to the ion mobility spectrometer results, the structural information of the amino acid derivative enantiomer can be obtained. The analytical reagent and method provided by the present invention have the advantages of being simple, accurate, and having a fast analysis speed, and are simpler than the current analysis methods for enantiomers of benzyloxycarbonyl amino acids and amino acid benzyl esters.

The invention discloses a rail transit infrastructure distributed photovoltaic power generation output characteristic analysis method, which comprises the following steps of: firstly, constructing a rail transit infrastructure distributed photovoltaic power generation system consistent with an actual application environment, and acquiring information such as annual photovoltaic output power; secondly, performing scene division on the distributed photovoltaic solar output, determining an optimal typical scene number of distributed photovoltaic typical scenes based on a clustering validity index, and selecting an initial typical scene according to the similarity between data points; then, generating a distributed photovoltaic typical sunshine output scene by taking the Euclidean distance between the scenes as a measurement standard; and finally, carrying out qualitative and quantitative analysis on the output characteristics of the distributed photovoltaic typical daily output scene.

The invention discloses a method for detecting heavy metals in an aqueous sample. The invention provides a method for detecting heavy metals in a water-based sample, which comprises the following steps: enriching the heavy metals in the water-based sample by using a hydrophobic solid-phase extraction membrane treated by a chelating agent, so that the heavy metals in the water-based sample are retained in the solid-phase extraction membrane; and detecting the heavy metals retained in the solid-phase extraction membrane by adopting X-ray fluorescence spectrum analysis.

The invention discloses a method for analyzing the segregation condition of a special-shaped casting blank, belongs to the technical field of ferrous metallurgy, and mainly aims at the solidification characteristics of the section of the special-shaped casting blank and the condition that the solidification structure of the casting blank is complex, the sampling positions of a fine grain area, a columnar crystal area and an equiaxed crystal area on the surface of the cross section of the casting blank are designed; after sample drilling, the chemical composition condition of each point is analyzed by adopting a chemical method, the segregation condition of the special-shaped casting blank is analyzed, a technical reference is provided for evaluating the internal quality of the special-shaped casting blank, and meanwhile, basic theoretical data is provided for the rolling process of the special-shaped casting blank.

The invention relates to the technical field of gas content analysis and detection, in particular to an analysis method for measuring low-content carbon in aluminum or aluminum alloy, which comprises the following steps: formulating sampling specifications of aluminum and aluminum alloy, mixing hydrochloric acid and pure water according to a certain proportion, corroding and soaking the aluminum and aluminum alloy at high temperature until the aluminum and aluminum alloy presents metallic luster, and obtaining a sample to be measured. The carbon content in the to-be-detected aluminum or aluminum alloy sample can be accurately analyzed and calculated by setting equipment and method parameters, selecting a fluxing agent and the like. According to the invention, aluminum and aluminum alloy samples are measured by adopting a high-frequency furnace slow changing mode, so that fracture of a quartz combustion tube and fluctuation of an analysis result caused by splashing of blocky samples during combustion are effectively avoided, and the effectiveness of a measurement result is ensured while the safety of equipment is protected.