369 results about "Quantitative determination" patented technology

The invention belongs to the field of asphalt mixture performance analysis, and particularly discloses a fatigue performance analysis method for an asphalt mixture of an asphalt pavement, which comprises the following steps of: synchronously acquiring a dynamic strain field and a temperature field in a material by fusing an embedded sensor in a paving and rolling construction process; a temperature-strain coupled fatigue damage evolution model is combined to construct an on-line fatigue performance analysis system oriented to the whole construction process, so that a complex heat-force coupling environment and a non-uniform compaction process in actual paving operation are effectively restored; scale effect deviation and boundary condition distortion caused by difference between laboratory test piece preparation and on-site working conditions are remarkably reduced, and meanwhile, in the online detection process of the fatigue performance of the asphalt mixture, instant quantitative judgment of the performance state of the pavement structure is realized by positioning a damage remarkable overrun area; and the in-situ monitoring capability on the initial fatigue damage is fully reflected, so that the abnormal strain accumulation process before microcrack initiation can be captured.

The invention relates to the technical field of production safety and intelligent monitoring, in particular to a cosmetic production line safety monitoring method and system based on data analysis, and the method comprises the steps: obtaining real-time operation parameters through a multi-source data collection module, and generating a production environment dynamic mapping graph; extracting a fluctuation trend and abnormal distribution characteristics, and generating a region data adjustment instruction set; adjusting a signal acquisition strategy, and constructing a regional signal alignment state table; identifying the signal intensity variation, and forming a regional signal adjustment mark graph; and finally outputting a monitoring area state evaluation value list. According to the method, the signal fluctuation expression precision and the dynamic regulation and control capability can be remarkably improved, the adaptability and the response sensitivity of safety monitoring in a complex production environment are enhanced, and high-precision local compensation and equipment state quantitative judgment are realized.

The invention belongs to the technical field of geophysical exploration, and particularly relates to a method and a system for quantitatively measuring intrinsic parameters of bedrock fractures based on all-angle domain amplitude and phase joint inversion. The method comprises the following steps: acquiring geological radar reflection data of a target fracture at a plurality of incident angles; synchronously extracting data sequences of amplitude change along with angles and phase change along with angles; establishing a fracture reflection theoretical model; constructing a target function jointly constrained by the amplitude residual and the phase residual; and adopting a global optimization algorithm to minimize the target function, and synchronously inverting to obtain the fracture opening, the filler dielectric constant and the occurrence parameter. According to the invention, through the combined constraint of the amplitude and the phase, the inversion multiplicity is effectively inhibited; accurate system effect correction is adopted, so that the reliability of large-angle data is ensured; according to the method, multi-parameter synchronous inversion without prior hypothesis is realized, the inversion precision is small in relative error, the method is obviously superior to a traditional method, and the method has important engineering application value.

The invention relates to a microfluidic reactor for electrocatalytic determination of chemical oxygen demand, and belongs to the field of environmental monitoring. In the reactor, to-be-detected samples are injected from a sample inlet positioned at the front end of a liquid inlet and flow into the reactor formed by stacking three layers of components from the liquid inlet below along with electrolyte, and the to-be-detected samples positioned at different horizontal heights turn along with liquid flow and finally reach the surface of a planar anode at the bottom under the action of a pinch plate distributed with a micro cone group; and the water flows upwards through a hole in one end of the top side of the buckle plate, passes through the auxiliary electrode with the hole and finally flows out of the electrolytic tank through a water outlet in the top. Organic matters in the to-be-detected sample are subjected to electrochemical oxidation reaction under the action of the catalyst on the surface of the planar anode at the bottom of the reactor, and a generated electric signal is used for quantitatively determining the chemical oxygen demand of the to-be-detected water sample. In the invention, the pinch plate distributed with the micro cone group can strengthen organic matters to break through stable horizontal laminar mass transfer, so that the organic matters in the sample to be detected fully reach the surface of the plane anode to generate electrochemical oxidation reaction, thereby improving electric signals and lower limit of detection. According to the characteristics, a more stable and accurate electric signal can be obtained when the reactor is used for measuring the chemical oxygen demand, and the linear range of the measurement is widened, so that the efficient and accurate measurement of the chemical oxygen demand in a sample to be measured is realized.

The invention relates to the technical field of giant salamander by-product quality evaluation, and discloses a giant salamander by-product source functional factor quality evaluation system and method, and the method comprises the steps: obtaining a giant salamander by-product sample, carrying out the pretreatment, and extracting a functional factor to obtain a to-be-detected sample; identifying and quantitatively determining specific markers based on biochemical analysis and molecular detection means to generate a marker data set; inputting the marker data into a multi-modal feature fusion module, extracting activity and stability features, and performing time sequence dynamic modeling; activity and stability independent evaluation branches are set, and corresponding score values are generated; dividing functional domains according to functional factor categories, constructing an evaluation curve based on historical data, substituting a target sample into each functional domain and an adjacent functional domain to generate functional domain evaluation results, and performing weighted fusion; and finally, carrying out weighted integration on the activity score, the stability score and the comprehensive evaluation value, and determining a final quality evaluation result.

The invention provides a celluloid nitrocotton stability quantitative determination method based on conductivity analysis, and the method comprises the following steps: determining the conductivity of standard nitrogen oxide gas dissolved in an aqueous solution by adopting a conductivity meter through a standard gas simulation mode according to the criterion of Beckmann-Lockg method 2mL / g; taking the numerical value as a stability index critical value of the celluloid nitrocotton; the method comprises the following steps: absorbing nitrocotton with the same mass by using ultrapure water, heating at 132 DEG C for 2 hours, releasing nitrogen oxide gas, recording the change value of the conductivity in the solution along with time in real time by using an oxidation stability tester, obtaining the change value of the conductivity after 2 hours, and determining the content of nitrogen oxide according to the comparison between the conductivity value and a critical value. And judging whether the stability of the celluloid nitrocotton sample is qualified or not. The method provided by the invention can solve the technical problem that accurate quantitative judgment is difficult to realize due to large sample quantity, high safety risk, tedious operation process and large color change error of test paper observed by human eyes in the traditional method.

The invention provides a pepsinogen II determination kit and a quantitative determination method, the kit comprises a reagent R1 and a reagent R2, the reagent R1 comprises a luminous donor molecule labeled pepsinogen II first antibody and a reaction buffer solution; and the R2 reagent comprises a light-emitting receptor molecule labeled pepsinogen II second antibody and a reaction buffer solution. A double-antibody sandwich structure marked by a luminescent donor and a luminescent receptor respectively is adopted, binding and luminescence can be completed in a liquid phase, solid phase coating and subsequent multi-step washing are not needed, real homogeneous detection and one-step incubation are achieved, the operation process is simplified, the detection time is shortened, and a full-automatic platform is adapted; and an improved buffer system can inhibit non-specific adsorption and reduce heterotropism interference such as RF / HAMA, so that the detection accuracy and repeatability are improved.

The invention relates to the technical field of metal spectrum analysis, in particular to a method for determining the element content of a metal sample by using a direct-reading spectrometer. The method comprises the following steps: acquiring a spectrogram of a to-be-analyzed metal sample; further carrying out iterative decomposition on each spectrum peak to obtain a decomposition peak; further inputting the spectrogram and all decomposition peaks of the spectrogram into a spectrum recognition model obtained through self-organizing mapping network training, and recognizing corresponding element categories; and finally, substituting the spectral intensity of each decomposition peak into a pre-established quantitative correction curve of the corresponding element, and calculating to obtain the content of each element in the metal sample without depending on a priori standard spectrogram or a preset overlapping peak number, so that accurate element quantitative determination under a complex overlapping spectrum peak is realized, and the determination precision and adaptability are improved.

The invention is suitable for the application field of electrolyte acidity determination, and provides a method for determining the acidity of an all-vanadium electrolyte based on a complexing mass difference method, and the method comprises the following steps: taking the all-vanadium electrolyte, and diluting the all-vanadium electrolyte into a pretreated all-vanadium electrolyte with the concentration of 0.05-0.1 mol / L; adding 1.5-2mL of a complexing masking reagent with the molar concentration of 1.5-2mol / L, weighing, and recording as M1; stirring and titrating, weighing and recording as M2; a quantitative determination method of mass difference is used for calculation, and the formula is {(M2-M1)-0.05} / A * C. In conclusion, a mass difference quantitative determination method is adopted, the vanadium complexing masking reagent is added, the adding amount and the pH value of the vanadium complexing masking reagent are controlled, a stable complex is formed through the complexing masking reagent, vanadium ions and impurity ions, the oxidation-reduction reaction and the precipitation reaction of the complex and sodium hydroxide are inhibited, and the accuracy of the acidity value of the all-vanadium electrolyte is improved.

The invention belongs to the field of mechanical property testing of metal materials, and relates to a method and a system for detecting tensile strain mark limit, the system applies tensile load to a metal plate sample through a test module, an illumination projection module projects a structured light pattern to the surface of the sample, and an image acquisition module continuously acquires surface images of the sample; and the data processing module is used for carrying out wrapped phase calculation, differential phase calculation, distortion parameter extraction and tensile strain mark initiation judgment on the image sequence, so that accurate positioning at the moment of tensile strain mark initiation and objective and quantitative measurement of the critical strain limit are realized. The method can effectively improve the detection sensitivity and accuracy of the material surface instability characteristics, realizes high-precision judgment at the moment of tensile strain mark initiation, and provides a reliable basis for material performance evaluation and quality control.

The invention relates to the technical field of biological detection signal analysis, and discloses a method for rapidly detecting the content of active collagen. The method comprises the following steps: collecting an original optical response signal of a reaction between a to-be-detected solution and a specific reagent, and constructing a time-space continuous primary reaction track through multi-level slicing and cross-domain splicing of a time domain, a frequency domain and a time-frequency domain; a signal mode set related to activity is separated through convolution kernel group depth scanning. A graph association network between signal modes is constructed based on the set, and a steady-state feature graph representing reaction kinetics is generated through iterative calculation. The feature map is mapped to a virtual reaction space defined by standard data, and quantitative judgment is achieved by calculating the distance between a projection vector and a preset concentration anchor point. According to the method, the sensitivity and the anti-interference performance of detection are enhanced through deep analysis reaction dynamic signals and correlation network modeling.

The invention belongs to the technical field of exploration and development of fault block oil and gas reservoirs, and particularly relates to a seismic prediction method and system for igneous rock intrusive fault zone sealing performance, and the method comprises the steps: determining the seismic attribute and seismic frequency attribute of a highlight body of a target interval according to petroleum seismic exploration data; determining magma invasion characteristic parameters according to the seismic attribute and the seismic frequency attribute of the highlight body, and determining fracture characteristic parameters of the fracture zone according to an eigenvalue characteristic algorithm operation result in the third-generation coherent attribute of the seismic data; determining an internal structure index of the intrusive fault zone according to the magma invasion characteristic parameters and the fracture characteristic parameters of the fault zone; and comparing the internal structure index of the intrusive fault zone with a closed lower limit threshold of the internal structure index of the known oil reservoir fault zone, and predicting the fault zone closure and the closure capability thereof according to a comparison result, thereby realizing quantitative determination of the oil and gas migration and dredging capability of the fault with magma invasion in the clastic rock stratum.

The invention discloses a multi-source operation exception association analysis and grading disposal method and system. The method comprises the steps of telemetry data collection and caching, non-blocking sending and self-adaptive readaptation, sliding time window and matrix construction, exception association clustering and comprehensive scoring, exception type judgment and grading alarm and self-healing disposal. The method comprises the following steps: continuously sensing a program execution state and an abnormal behavior, realizing data peak clipping storage by local cache, introducing a self-adaptive backoff retry mechanism, decentralizing transmission of abnormal data on the premise of not blocking a main service, and identifying and distinguishing anomalies in combination with abnormal propagation characteristics and an influence coupling relationship. And after quantitative judgment, automatically outputting a matched grading treatment strategy and an operation recovery measure. The closed-loop operation treatment mechanism of coverage sensing, transmission, aggregation, judgment and disposal constructed by the invention can realize rapid sensing, accurate attribution and adaptive response of the abnormity in a complex industrial load environment, and the stability and reliability of the operation of an industrial system are remarkably improved.

The invention relates to the technical field of optical equipment, in particular to a three-dimensional confocal X-ray emission-fluorescence bimodal spectrometer and a use method. X-ray tube focus point source excitation and three-dimensional confocal light path design are adopted to generate a bimodal signal source, and X-ray emission and X-ray fluorescence bimodal signals of chemical elements in a sample are respectively collected and obtained through a position sensitive detector and an energy sensitive detector through a confocal bent crystal focusing light splitting system and a fluorescence light path; confocal scanning of a three-dimensional space in a sample is completed through a sample loading and position self-control system, and the absolute content of a chemical element in a specific form is calculated through a signal linkage analysis module. The spectrometer can realize synchronous quantitative determination and analysis of forms and contents of chemical elements, solves the problems that XRF and XES can only be operated step by step, form proportion and total data cannot be associated in real time, and an XES spectrogram has spectrum peak overlapping interference and the like, and has one-dimensional point determination, two-dimensional surface scanning and three-dimensional body analysis capabilities.

The present invention discloses a method for quantitative determination of trace harmful elements in various flotation products of rare polymetallic ores, which includes three parts: sample processing, preparation of complex matrix standard solution and sample testing. Each flotation product is digested with analytically pure concentrated nitric acid; the main mineral species of each product are determined by XRD, and the high-purity standard substances of each main associated mineral are digested with analytically pure concentrated nitric acid, and the content of harmful elements to be monitored is determined by ICP-MS after appropriate dilution; each standard substance digestion solution is diluted to a major element concentration of 1000μg / mL, and used to dilute the harmful element standard stock solution to obtain standard solutions with different concentration gradients; then the process blank and digestion sample are tested using an inductively coupled plasma mass spectrometer using a combination of internal standard method and matrix matching to obtain the content of trace harmful elements to be measured. It effectively overcomes the mass spectrometry and non-mass spectrometry interference problems faced by complex matrix sample testing, is suitable for the analysis and testing of trace element content in complex samples, and has a simple method and is easy to operate.

The invention belongs to the technical field of medicine detection, and particularly relates to a method for determining the content of impurities in OAB-14 by using high performance liquid chromatography. The method comprises the following steps: preparing a test sample labeling solution, a test sample solution and a contrast solution of OAB-14, respectively injecting the test sample labeling solution, the blank solution, the contrast solution and the test sample solution into a liquid chromatograph, recording chromatograms, and calculating according to a main component self-contrast method to obtain the content of impurities in the test sample solution; wherein the impurities are one or more of an impurity A, an impurity B, an impurity C, an impurity D, an impurity E or an impurity F. According to the method, the impurities in the OAB-14 can be qualitatively and quantitatively measured at the same time, the stability and the reproducibility are good, the separation degree between a main peak and each impurity peak is good, the precision is high, and an analysis means is provided for quality control of the OAB-14.

The invention relates to the technical field of traditional Chinese medicinal material identification, in particular to a method for determining the year of pericarpium citri reticulatae based on radioactive carbon and application thereof. The invention provides a method for determining the year of dried orange peel based on radioactive carbon, which comprises the following steps: calcining dried orange peel cellulose under a certain vacuum degree, and collecting CO2 generated in the calcining process; the method comprises the following steps: reacting CO2 with a reducing agent in the presence of a catalyst to obtain graphite; detecting the content of 14C / 12C in the graphite to obtain the 14C-F value of the pericarpium citri reticulatae; fitting the relationship between the 14C-F value of the pericarpium citri reticulatae of the known year and the year to obtain a theoretical curve of the 14C-F value of the pericarpium citri reticulatae and the year; and substituting the 14C-F value of the pericarpium citri reticulatae of the unknown year into the theoretical curve of the 14C-F value of the pericarpium citri reticulatae and the year to obtain the year of the pericarpium citri reticulatae of the unknown year. The method can realize the quantitative determination of the year of the dried orange peel, and is not interfered by manual work.

The present application relates to the technical field of cell function detection, and particularly relates to a method for evaluating cell function of HL-60 in monocyte activation test. The method comprises the following steps: (1) preparing HL-60 cell suspension; (2) stimulating with pyrogen; (3) quantifying total protein; (4) detecting by Western blotting; and (5) evaluating cell function. The method is based on Western blotting technology, and combines statistical analysis to realize objective and quantitative determination of the core functional index of the ability of synthesizing IL-6 protein under pyrogen stimulation, can accurately identify cells with pyrogen response function defects, provides clear experimental reference for selection of HL-60 cell generations, can pre-screen qualified cells, reduces pyrogen detection deviation caused by unqualified cell function and improper generations from the source, and effectively improves the reliability and repeatability of pyrogen detection results.

This invention discloses a method and system for data fusion of multi-platform commercial outlets based on multi-source heterogeneous data. It relates to the field of data processing technology. The method involves acquiring commercial outlet data from multiple platforms and performing validity verification to generate an initial data foundation for each platform; extracting outlet coordinate information and performing a unified format conversion to obtain a coordinate-standardized commercial outlet dataset; constructing a multi-industry knowledge graph and an industry-wide common affix library; using algorithms to remove common name affixes and retain core feature identifiers to generate a feature-identified dataset; constructing a similarity algorithm to extract multiple features of outlets, calculate their similarity separately, and fuse them to obtain an overall similarity, generating a similarity matching result set; and identifying and removing duplicate data from multiple platforms based on the matching results to generate a full dataset of multi-source fused commercial outlets. Compared to traditional fusion methods, this method achieves accurate feature identification and quantitative determination of duplicate data, improving the completeness and accuracy of the fused data and making more efficient use of computing power.

The application discloses a kind of coal rock nonlinear fracture propagation length quantitative determination method based on multiple parameters, comprising: preparation of coal rock sample containing notch;Spray black and white speckle on the surface of sample, install acoustic emission sensor, clip type extensometer and displacement sensor;Carry out three-point bending peak after cycle loading and unloading fracture experiment, record load, crack opening, force point displacement, acoustic emission waveform and DIC image;Through COD-P and LPD-P curve calculation mechanics flexibility, back calculation to solve stress constraint crack length;From acoustic emission positioning, obtain the spatial distribution histogram of breakage dissipation energy, combined with DIC horizontal displacement gradient threshold cloud picture, determine equivalent crack tip and length;Further calculate coal rock fracture process zone length, and intuitively show nonlinear fracture propagation path.The application provides a kind of crack dynamic change quantitative determination method based on mechanics flexibility-displacement gradient-energy dissipation distribution multiple physical parameters, reduce the influence of human subjective consciousness, and the measurement result is accurate and reliable.

The application discloses a method for determining 15 new psychoactive substances in saliva by solid phase supported liquid-liquid extraction (SLE) combined with ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS / MS), which specifically uses a mixed solution of methyl tert-butyl ether and n-hexane as an elution solvent, adopts solid phase supported liquid-liquid extraction to pretreat saliva samples, and then adopts UPLC-MS / MS to detect the collected eluent, so as to realize qualitative and quantitative determination of the new psychoactive substances in saliva. The method has the advantages of rapidness, accuracy, high sensitivity and simple operation, the detection limit of the method is 0.2-0.5 ng / mL, can meet the domestic and foreign limit requirements, and provides technical support for monitoring and investigation of the new psychoactive substances in saliva.

The present application provides a kind of shale oil saturation quantitative determination method and system, quantitative determination method includes: preparation shale plug sample;The shale plug sample is washed oil, dried, vacuum pressurized saturated deionized water, carries out one-dimensional nuclear magnetic resonance test, obtains shale plug sample pore volume;Step 3: the shale plug sample is dried again, and the dynamic change characteristics of the one-dimensional and two-dimensional nuclear magnetic resonance test results of the shale plug sample are obtained, and the oil output at the end of the displacement device is measured by measuring cylinder;According to the shale plug sample, the oil and water distribution area is determined, and the limit value of the two is divided;The oil saturation of different displacement stages of the displacement oil and the displacement non-oil shale plug sample is calculated respectively;According to the characteristic parameters of shale plug sample, an oil saturation calculation model is established based on least square method, and a chart is constructed.A shale oil saturation interpretation chart based on different displacement stages of nuclear magnetic characteristics is provided.

The present invention provides a quantitative measurement method using competitive immunochromatography, which has not been previously reported. The quantitative measurement method comprises: (1) creating a calibration curve based on the signal intensity of a test line according to the concentration of a standard material by using multiple strips, and calculating the concentration of a target analyte by using the calibration curve; (2) when the concentration of the target analyte increases to a significant level on the calibration curve of the standard material, a labeled signal of a detection ligand on a control line remains unchanged in a case where a detection ligand of a target analyte-detection ligand conjugate binds to and saturates a capture ligand on the control line, making it impossible to estimate the concentration beyond that level; however, by designing a binding site for the capture ligand on the control line to be the target analyte of the target analyte-detection ligand conjugate, a high concentration of the target analyte breaks down the triple conjugate of detection ligand-target analyte-capture ligand, leading to dissociation of the labeled detection ligand and thereby weakening the signal (hook effect); and (3) comparing the signal intensity patterns of the test line and the control line according to the calibration curve of the standard material with the signal intensity pattern of a sample target analyte, and determining how far the target analyte is from the saturation point of the detection ligand. This method is characterized in that, in cases where the target analyte is present in an excessively large amount and exceeds the maximum value of a measurement range (dynamic range) of the calibration curve, the calibration curve using multiple strips and the configurations (test line and control line) of an immunochromatographic device are designed differently to distinguish such cases.

A quantitative detection method of thallium content in converter graphite ball, steps include: 1) the pretreatment of converter graphite ball; 2) the preparation of standard solution series; 3) the detection of thallium content in converter graphite ball.The application finds that the suitable pretreatment method of converter graphite ball is carbon removal by burning, and then high-chloric acid and dilute nitric acid are used to dissolve salt, by which the converter graphite ball can be completely dissolved, thereby the stability of quantitative determination of thallium content in converter graphite ball is improved, the pretreatment method is simple, fast and operable; the method is suitable for the quantitative detection of thallium content in converter graphite ball with thallium content not less than 0.0062 μg / L, the recovery rate of thallium is as high as 99.1%, the analysis accuracy is high, the detection lower limit is as low as ppb level, the sensitivity is high, and the method has the advantages of simple operation, simple analysis condition and low labor intensity.Therefore, the application has significant economic benefits and the advantages of simplicity and economy.

The invention discloses an in-vivo ferrofluid drug transport performance testing device and a testing method. The device comprises a mounting table, a ferrofluid loading device and a ferrofluid loading device, the test board is mounted on the mounting table, a test substrate is arranged on the test board, the test substrate is used for placing ferrofluid droplets, and the ferrofluid droplets are wrapped with fluorescent particles; the moving module is mounted on the mounting table, the moving module is provided with a supporting column capable of moving front and back, the supporting column is provided with a movable table capable of moving up and down, and a magnetic block is arranged on the movable table and located below the test table; a shooting area of the camera faces the test substrate; and a light-emitting area of the excitation light source faces the test substrate. Compared with the prior art, the technology has the advantages that quantitative determination of the Roussonii instability critical magnetic field is realized, a reliable basis is provided for optimizing magnetic field parameters, and the leakage rate of the nano-drug in the targeted transportation process is accurately quantified by shooting and analyzing the residual path of the fluorescent particles during targeted transportation of the ferrofluid droplets; the method has the advantages of high repeatability, reliable detection and the like.

The invention discloses a quantitative detection method for a mixture of bis (2-hydroxyethyl) disulfide and mercaptoethanol, and relates to the field of analysis and detection. The testing method comprises the following steps: respectively preparing a bis (2-ethoxyl) disulfide standard solution and a mercaptoethanol standard solution with different concentrations; and quantitatively measuring the standard solution and the detection sample through gas chromatography equipment, optimizing chromatographic conditions, drawing a standard curve according to the detection result of the standard solution, and quantitatively analyzing the detection sample by combining the standard curve and the spectrum of the standard solution. According to the present invention, the gas chromatography conditions are optimized, the phenyl functional group-containing polysiloxane is selected as the filler of the chromatographic column, and the detection temperature and the temperature rising program are controlled so as to ensure the separation and the detector sensitivity, and the split ratio is controlled to avoid the non-linear response and the peak overlapping; the detection accuracy of the bi-component bis (2-ethoxyl) disulfide and mercaptoethanol is high, the chromatographic peak separation degree is good, and the product quality detection requirement can be met.

The invention discloses a deep surrounding rock anchor rod spacing quantitative determination method based on fracture toughness parameters. The method comprises the following steps: obtaining the fracture toughness and uniaxial compressive strength of rock through an indoor test; determining a uniaxial compression parameter and an elastic modulus of the rock mass by combining a geological strength index GSI, a damage factor D and a Hoek-Brown criterion; calculating a brittleness index B4 by using the fracture toughness of the surrounding rock, the uniaxial compressive parameter of the rock mass and the elastic modulus; and based on the brittleness index B4, the rock mass elasticity modulus, the engineering burial depth and the rock mass volume weight, a quantitative calculation formula of the anchor rod spacing is established, an empirical coefficient is solved in combination with the spacing range of the corresponding surrounding rock grade in the specification, and finally quantitative determination of the anchor rod spacing is achieved. The method overcomes the defect that quantitative basis is lacked in spacing adjustment in existing specifications, and is particularly suitable for anchor rod support design for controlling brittle failure of surrounding rocks under the deep high-stress condition.

The invention discloses a child endocrine hormone quantitative determination device, and belongs to the technical field of medical instruments, the child endocrine hormone quantitative determination device comprises a preprocessor, the inner side of the preprocessor is connected with a clamping assembly in a clamping manner, the inner side of the clamping assembly is connected with a plurality of blood sample test tubes in a clamping manner, and the inner part of the preprocessor is connected with the same shaking assembly corresponding to the bottom ends of the plurality of blood sample test tubes. A first hydraulic cylinder is controlled to stretch out and draw back in a reciprocating mode, the telescopic end of the first hydraulic cylinder pushes a shaking-up plate through a link plate and a sliding block, the bottom end of a blood sample test tube is made to incline, a butt joint changes the direction through a steering spring, a clamping pad rotates, a switching spring is twisted, and it is guaranteed that the blood sample test tube can rotate automatically when inclining and keeps stable under the action of the clamping pad; the shaking-up plate drives the roller to slide on the inclined plane of the wedge-shaped plate, the height is increased along with the increase of the inclination angle, the shaking-up plate slides and pulls the supporting spring in the process, the bottom end of the blood sample test tube is reversely inclined and keeps autorotation during retraction, and the blood sample can be efficiently shaken up through combination of autorotation and swinging.

The present application relates to the technical field of environmental monitoring and pollution tracing, and discloses a basin-scale perfluorinated compound tracing method and system based on artificial intelligence, which integrates multi-source data in a basin to construct a unified spatial and temporal granularity basin multi-source data cube, identifies perfluorinated compound structures through a virtual spectrum diagram enhanced deep learning model, simulates pollutant spatial and temporal concentration distribution by combining a graph neural network of a physical mechanism, and then inversely propagates and matches source characteristic fingerprints to invert potential emission source contribution, outputs a pollution source contribution heat map and a priority control enterprise list, solves the core problems of difficulty in joint analysis of multi-source data, difficulty in identification of unknown compounds and difficulty in quantitative determination of multi-source superposition contribution in basin-scale perfluorinated compound tracing, and provides support for precise pollution control.

The invention provides a method for quantitatively detecting arsenic element in ciliate desert-grass leaves, which comprises the following steps: preparing a sample tablet of the ciliate desert-grass leaves, collecting LIBS spectral data of the sample tablet, obtaining the true value of the arsenic element content of the sample tablet, and constructing an original spectral view angle, a first derivative view angle and a second derivative view angle of the LIBS spectral data. The method comprises the following steps: preliminarily establishing a ciliate desert-grass leaf arsenic element quantitative model by adopting a table priori data fitting network model, introducing spectral physical priori constraint for an original prediction result of the table priori data fitting network model at each view angle, establishing a multi-view prediction result fusion model, and generating a final arsenic element concentration prediction result. According to the method, the respective advantages of the three perspectives can be combined, the sensitivity and stability of arsenic content detection are remarkably improved, the method can be applied to rapid detection of arsenic elements in the leaves of the ciliate desert-grass, and an efficient and reliable technical means is provided for ciliate desert-grass arsenic element absorption mechanism research, pollution remediation efficiency evaluation and treatment strategy optimization.