21results about How to "Reliable method" patented technology

The application discloses a portrait inspection and identification method based on gait cycle decomposition and multi-phase force analysis, and comprises the following steps: extracting the skeleton key points of a target object in a target object image set in a comparison video and the confidence score of each skeleton key point; extracting the features of the target object in the target object image set according to the skeleton key points of the target object, and obtaining the target object features, wherein the target object features comprise basic features, gait cycle features, gait stage features and gait parameter features; integrating the basic features, the gait cycle features and the gait stage features to obtain comprehensive features; respectively calculating the similarity of the target object features and the comprehensive features in the comparison video to obtain similarity calculation results and overall similarity calculation results; and obtaining the identity identification result of the target object according to the similarity calculation results and the overall similarity calculation results.

This invention belongs to the field of battery materials technology, and discloses a single-crystal lithium nickel manganese oxide material, its preparation method, and a lithium-ion battery. The single-crystal lithium nickel manganese oxide material contains Li... x Ni 2‑x The percentage content of O2 is C≤1.6%, C=(I LixNi2‑xO2 / (I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 ))×100%, I LixNi2‑xO2 For Li in the XRD refinement results x Ni 2‑x The diffraction peak intensity corresponding to O2, I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 To add LiNi to the XRD refinement results 0.5 Mn 1.5 O4 and Li x Ni 2‑x The diffraction peak intensity of the O2 two-phase model indicates a grain size of 5–11 μm. The aforementioned single-crystal lithium nickel manganese oxide material was prepared via a lithium-deficient high-temperature sintering and lithium-replenished low-temperature sintering process. Li x Ni 2‑x Large-particle monocrystalline lithium nickel manganese oxide materials with low O2 content avoid electrolyte decomposition under high voltage, thus preventing the generation of HF and Li. x Ni 2‑x The O2 reaction can effectively improve the cycle stability of the battery. Simultaneously, the high compaction density of monocrystalline lithium nickel manganese oxide material can enhance the battery's energy density, thermal stability, mechanical properties, and durability. The method for preparing monocrystalline lithium nickel manganese oxide material in this invention is relatively simple, reliable, and effective, and can utilize existing production lines.

The method for monitoring the resonant capacitor state of the medium-voltage direct-current LLC resonant converter comprises the following steps: closing the switch tube S 11 ~S 41 of the full-bridge at the initial moment when the LLC resonant converter is stopped, then turning on the switch tube S 31 and S 41 after the closing process lasts for 500 ns, forming a discharge loop of a resonant cavity independent of the latter stage, then collecting the time sequence data of the resonant current in the resonant cavity, and estimating the resonant capacitor by using a nonlinear parameter identification algorithm, wherein the estimation is sequentially performed by encoding, initializing the population, calculating the individual fitness, selecting the cross variation evolution, and iterative optimization, finally searching for the optimal resonant current estimation value, and calculating the resonant capacitor estimation value based on the corresponding resonant frequency and resonant inductance. The present application estimates the resonant capacitor value based on the discharge curve of the limited sampling data, has low cost and high reliability, and the present application estimates the parameters by using the nonlinear parameter identification algorithm, and has high estimation accuracy.

The invention discloses a momentum wheel mounting structure optimization and verification method suitable for in-orbit vibration source frequency avoidance, and the method comprises the steps: determining whether the momentum wheel generates resonance at a normal working rotating speed or not through the response measurement of the speed increasing process of the momentum wheel under the condition of a free boundary of a whole satellite, and further generating disturbance vibration to other sensors; establishing a system-level whole satellite model containing an assembly or a local simulation model capable of reflecting installation local rigidity, and carrying out modal analysis; the method comprises the following steps: under limited space constraints, carrying out operation efficacy and reinforcement state simulation iteration without disassembling a product, determining a reinforcement mode direction according to a formation, determining specific parameters according to frequency, and carrying out convergence to obtain a lightest, most efficient and operable integrated lightweight reinforcement structure under different momentum wheel mounting positions; and performing reinforcement design to the whole satellite, performing momentum wheel acceleration process response measurement under the condition of the free boundary of the whole satellite, determining the local structure frequency of the reinforced momentum wheel according to the formant occurrence frequency, and determining whether the in-orbit frequency avoidance reinforcement design meets the requirement or not.

The application discloses a pumped storage full-power frequency converter power unit variable frequency control method and device, N power units are cascaded at an AC end to form a test valve, and M power units are cascaded at the AC end to form a test valve; the method is used for controlling the test valve to output several AC frequency target values, and the method comprises the following steps: pre-charging DC capacitors in the test valve and the test valve to target values; determining corresponding output current / power target values according to the AC frequency target values to be output; controlling the turn-on and turn-off time of the turn-off semiconductor of each power unit in the test valve and the test valve, so that the actual output current / power of the test valve is the output current / power target value, and the actual output frequency of the test valve is the AC frequency target value. The application can simulate the continuous speed regulation operation condition of the pumped storage full-power frequency converter power unit on the pumped storage unit.

This invention discloses a method for determining the upper limit of water saturation in tight gas reservoirs using two-phase permeability analysis, comprising: 1. Selecting several rock samples for gas-water two-phase permeability analysis, and establishing a gas-water phase permeability curve based on the relative permeability of the water phase, the relative permeability of the gas phase, and the water saturation value of each rock sample; 2. Based on the gas-water phase permeability curve, first reading the water saturation value of each rock sample when the relative permeability of the water phase is a set value A, then reading the relative permeability of the gas phase corresponding to the same water saturation value of each rock sample, and determining the upper limit of water saturation for each rock sample accordingly; 3. Calculating the average value of the upper limit of water saturation for each rock sample, and the obtained average value is the upper limit of water saturation for the tight gas reservoir. This invention can accurately determine the upper limit of water saturation in tight gas reservoirs using relatively simple means, simplifying the determination process and improving accuracy compared to existing technologies, providing an accurate basis for the rational exploitation of tight gas reservoirs.

This invention discloses the application of a reagent that inhibits ADNP gene expression or ADNP protein activity in the preparation of drugs for treating renal fibrosis, belonging to the field of biomedical technology. The application of the reagent that inhibits ADNP gene expression or ADNP protein activity in the preparation of drugs for treating renal fibrosis. This invention effectively knocks down or knocks out the ADNP gene in renal tubular epithelial cells, objectively investigates the effects of ADNP deficiency on a series of phenotypes in HK-2 cells, and confirms that ADNP can inhibit EMT and renal fibrosis in HK-2 cells. Drugs that target and knock down or knock out the ADNP gene in human kidneys can be developed to delay the progression of renal fibrosis.

The invention discloses a force-heat coupling verification test method suitable for a thruster support, and the method comprises the steps: determining test piece parameters according to a product design state and a verification purpose; determining test loads including a force load and a temperature load according to force and thermal simulation results and a test purpose; designing a test fixing clamp; determining a loading mode and a control mode of the force load and the temperature load according to the test load; a thruster support is fixed on a test fixing clamp, and according to a loading mode and a control mode of a load, a force-heat coupling loading method is adopted to carry out force-heat coupling verification. The method has the advantages of flexible application of coupling and decoupling working conditions, simple operation, wide application range, accurate and reliable result and the like.

The present application relates to the technical field of welding, in particular to a cobalt-based filler metal, a preparation method and application thereof, the chemical composition of the cobalt-based filler metal comprises Co: 50-70%, Cr: 5-15%, Ni: 6-15%, W: 3-4%, and Zr: 10-30% by mass percentage; the preparation steps comprise weighing the corresponding metal elements according to the above chemical composition, inductive smelting at a temperature of 1500-1600 DEG C, and powdering. The cobalt-based filler metal or the cobalt-based filler metal prepared by the above preparation method has excellent fluidity and wettability and low brittle phase formation tendency, has extremely strong versatility, and the use of the filler metal can obtain uniform welds and perfect filling, the high-temperature performance can meet the use requirements of active parts, and can be applied to repairing surface damage of cobalt-based material workpieces.

The present application relates to a kind of 37Mn5 small round billet low crack low segregation continuous casting method, and the chemical composition of round billet includes by weight percentage:C:0.35%~0.39%, Si:0.22%~0.32%, Mn:1.35%~1.55%, P≤0.016%, S≤0.008%, Al:0.010%~0.030%, N≤55ppm;Crystallizer copper pipe upper outer wall is equipped with heat insulation plating, from the upper mouth to the lower mouth direction of crystallizer copper pipe, the taper of crystallizer copper pipe decreases from no heat insulation plating place;The solidification of the casting blank in crystallizer is carried out three-stage soft cooling after two cooling zone;It can solve the problem such as subcutaneous crack, center segregation, center loose, developed columnar crystal of φ180mm diameter 37Mn5 small round billet without light press-down equipment, so that round billet surface does not need large area to be directly entered subsequent rolling process after grinding, to realize stable production, improve yield.

This invention relates to the field of drug detection technology, specifically to a method for detecting nitrogen oxide impurities in vonoprazan fumarate tablets and its application. The invention employs liquid chromatography-mass spectrometry (LC-MS) to detect the nitrogen oxide impurities in the sample. The detection method provided by this invention can achieve qualitative and quantitative analysis of nitrogen oxide impurities in vonoprazan fumarate tablets, and has advantages such as high impurity separation, good specificity, high precision, good repeatability, and high sensitivity. The method is accurate and reliable and can be widely applied to the quality testing of vonoprazan fumarate tablets.

The application discloses a quality detection method of Yinxie No.1 oral granules, and relates to the field of traditional Chinese medicine analysis. The method adopts a thin layer chromatography method to identify Sophora flavescens, Glycyrrhiza uralensis, Arctium lappa and Saposhnikovia divaricata, and simultaneously adopts a high performance liquid chromatography method to detect the content of paeoniflorin, so that the quality of the Yinxie No.1 oral granules is comprehensively evaluated and controlled, a comprehensive and reliable basis is provided for the authenticity identification and internal quality detection of the granules, and the stability of product quality and the safety and effectiveness of clinical medication are ensured.

The invention discloses a thin-layer chromatographic analysis method for detecting radiochemical purity of a gallium chloride [68Ga] solution, and belongs to the field of chemical analysis. According to the method, iTLC-SG thin-layer chromatographic paper is used as a stationary phase, sodium acetate solution-methanol is used as a mobile phase, the radiochemical purity of a gallium chloride [68Ga] solution, a system adaptive solution and a gallium chloride [68Ga] and system adaptive solution is detected by thin-layer chromatography, and the influence of different mobile phases on detection results is investigated. According to the method provided by the invention, the radioactive chemical purity of the gallium chloride [68Ga] solution can be accurately and quickly detected by optimizing the conditions of the stationary phase and the mobile phase, the gallium chloride [68Ga] solution can present symmetrical and sharp chromatographic peaks, the accuracy and reliability of the detection result are ensured, the whole analysis process only needs several minutes from sample application to scanning completion, and the detection result is accurate and reliable. And the high requirement of the transient half-life period of the gallium-68 nuclide on the analysis speed is met.

The invention belongs to the technical field of traditional Chinese medicine analysis, and particularly relates to a construction method and application of a specific chromatogram of an achyranthes aspera throat-clearing mixture. According to the invention, the spanning from single index control to overall quality evaluation is realized; the specific characteristic spectrum method for the achyranthes aspera throat-clearing mixture is established for the first time, and the limitation that only the content of a single component is measured in the prior art is broken through. By simultaneously monitoring the five key characteristic peaks of chlorogenic acid, caffeic acid, bergenin, geniposide and catechin and the consistency of the overall spectrum of the five key characteristic peaks, the basic material feeding condition and the matching stability of the monarch, minister, assistant and guide medicines in the preparation can be comprehensively reflected, so that the overall quality and the uniformity of the curative effect of the product are more scientifically guaranteed.

The application discloses a kind of solid hydrogen storage materials and preparation method thereof.The material is dense solid composite, by hydrogen production agent, non-noble metal boride catalyst and composite lithium cobalt oxide carrier is formed by pressure molding, and water can be supplied hydrogen.Hydrogen production agent is based on sodium borohydride or potassium borohydride;The carrier is modified composite lithium cobalt oxide, and has carrier and catalytic function.This application eliminates liquid solvent and porous support structure, builds synergistic catalytic system, to improve mass and volume hydrogen storage density, and ensure stable hydrogen production rate.Preparation method only involves solid phase mechanical mixing and pressing molding, and process is simple, suitable for large-scale production.The material has the characteristics of portable, safe, and can be used as an ideal hydrogen source, applied to hydrogen fuel cell and other fields.

This invention discloses a vegetable orderly harvesting and packing device and method, and a harvester, including a pulling device, a cutting device, and an orderly conveying device. It also includes a vegetable guide device for containing and rotating the vegetables, a collection frame for collecting the vegetables, and a control device. The control device is connected to the pulling device, the cutting device, the orderly conveying device, and the vegetable guide device. The vegetable guide device is located at the discharge port of the orderly conveying device. The vegetables are vertically conveyed into the vegetable guide device, and under the rotation of the vegetable guide device, the vegetables detach from the vegetable guide device and are horizontally and orderly laid into the collection frame layer by layer. This orderly vegetable harvesting and packing device has the advantage of enabling the orderly packing of densely planted leafy vegetables.

This application provides an electrochemical sensor for detecting luteolin, comprising a working electrode and a sensing material modified on the working electrode; the sensing material is a Co-N / C nanomaterial. The Co-N / C nanomaterial prepared in this application possesses a unique structure and excellent electrocatalytic activity, which can significantly enhance the electrochemical response signal to luteolin, thereby achieving highly sensitive detection of luteolin. Simultaneously, this sensor exhibits good selectivity, effectively avoiding interference from other coexisting substances in the sample.

This invention relates to a positioning fixture for a combustion chamber vortex generator and its usage method. It addresses the problem of low inspection efficiency for existing vortex generator parts. The technical solution of this invention includes a fixture base, with a positioning platform and a positioning ring integrally formed at the center of the fixture base. The upper surface of the positioning ring has a downward-facing annular clearance groove. Bolt positioning holes three are provided at the center of the fixture base, positioning platform, and positioning ring. The part is placed on the positioning ring and pressed tightly by a central pressure plate, pressure plate one, and pressure plate two. The positioning ring and the part have similar structures. Triangular measuring groove one and triangular measuring groove two are provided on the positioning platform. After the vortex generator is machined, this invention allows direct measurement of the distance between the machined surface of the part and the standard measuring surface on a machining center, thereby determining whether the dimensions of the machined surface meet the tolerance requirements. This shortens the preparation and inspection time for coordinate measuring machine (CMM) inspection after part disassembly, effectively improving the inspection efficiency of the part.

This invention relates to the field of tobacco processing technology and discloses a method for the targeted generation of solanone in tobacco leaves. The method includes the following steps: First, soaking the tobacco leaves in an SDS solution with a mass percentage concentration of 0.05-1% to disrupt the surface structure of the leaves and promote the entry of the bacterial strain into the leaf tissue; second, soaking the tobacco leaves in a solution of *Sphingomyelinatoria* (accession number CCTCC AB 2014121), utilizing the biocatalytic action of this specific strain to efficiently and specifically convert cephalotrimethylenediol in the tobacco leaves into the target aroma component, solanone; finally, subjecting the treated tobacco leaves to heat treatment at 90-110°C for 20-45 minutes to terminate the reaction, stabilize the product, and fix the solanone conversion rate. This invention achieves targeted and efficient enrichment of solanone through a specific process, significantly improving the aroma quality of tobacco leaves. The method is stable and reliable and has significant application value.

The invention discloses an under-sampling method based on energy diffusion and potential distribution, and belongs to the technical field of data processing, and the method comprises the steps: constructing a sphere neighborhood for each sample in an input unbalanced data set, calculating the potential of each sample based on the sphere neighborhood of each sample, and carrying out the bilateral filtering processing, and obtaining a denoised data set; calculating the potential of the residual majority class samples in the majority class sample set in the denoised data set, iteratively deleting the redundant majority class sample with the highest potential value until the majority class sample data and the minority class sample number are balanced, and outputting a balanced data set; according to the undersampling method based on energy diffusion and potential distribution, the performance of the classifier is remarkably improved, and meanwhile original data distribution is kept to the maximum extent.

The present application relates to the preparation method and application of the complex of the engineered bacteria loaded with the functionalized melanin nanosystem, which can effectively solve the problems of activating the STING pathway, reversing T cell exhaustion, improving the effect of tumor immunotherapy and ensuring the effect of cancer treatment drugs, and the melanin is prepared into melanin nanoparticles, and the carboxylated melanin nanoparticles are formed through the thiomalic acid reaction, the polypeptide chain and 2-cyano-6-amino-benzothiazole are modified at the carboxyl terminal of the melanin nanoparticles through the amidation reaction, the metal ions are complexed on the surface of the functionalized melanin nanoparticles through the metal complexation, and finally the functionalized melanin nanosystem is adhered to the surface of the engineered escherichia coli through the adhesion, so as to obtain the complex of the engineered bacteria loaded with the functionalized melanin nanosystem; the present application is convenient to operate, the method is stable and reliable, has good biocompatibility and long retention time, can play the multiple effects of targeting tumor, activating the cGAS-STING pathway, blocking the PD-1 / PD-L1 axis and reversing T cell exhaustion.