404results about How to "Analytical results are reliable" patented technology

The invention discloses a device and a method for detecting attention focusing degree based on the analysis of heart rate variability, mainly solving the problems of large interference and inconvenient testing of reference signals for attention judgment in the prior art. The method comprises the following testing steps: acquiring original electrocardiographic digital signals according to a MV5 lead mode; filtering the interference in the original electrocardiographic digital signals, extracting the position of a R wave and calculating heart rate variability signals; integrating and segmentingthe heart rate variability signals; performing empirical mode decomposition on each segment of the heart rate variability signals; calculating the approximate entropy of the heart rate variability signals and intrinsic mode function component signals; training a neutral network by using the calculated approximate entropy as an input vector of a reverse transmit neural network algorithm, and determining the parameters of codes of a neutral network; and detecting the attention focusing degree of a subject by utilizing the trained neutral network and outputting the test result. The invention hasthe advantages of large reference signal strength, convenient test and high accuracy, and is used for testing the attention focusing degree of a human body.

The invention discloses a lung cancer somatic mutation detection and analysis method based on a high-throughput sequencing technique. The method comprises the steps of (1) controlling quality; (2) comparing sequences; (3) detecting mutations; (4) annotating the mutations; (5) reporting the results. Compared with the prior art, the method of the invention has the advantages that the detection results are reliable; the detection content is diversified; the detection method is flexible; the data results are visualized.

The invention relates to a surrounding rock stress distribution determining method in the tunnel surrounding rock stability analysis and evaluation field. The method comprises the following steps that (1) a mechanical model is built: the surrounding rock volume weight is set as gamma, the side pressure coefficient is set as lambda, the tunnel buried depth is set as H, the excavation span is set as D, and when the tunnel buried depth H and the excavation span D meet the condition that H is greater than or equal to 10D, the original ground stress field of the tunnel is simplified into the vertical stress, the horizontal stress and the shearing force uniformly distributed at infinity; (2) a mapping function of the arbitrarily excavated cross section and the variable zeta is built; (3) zeta and omega are adopted for showing analytic function psi(z); (4) the excavated surrounding rock stress of the tunnel is obtained through calculation according to the following complex variable functions; and (5) the calculated surrounding rock stress is analyzed. The method fills the underground tunnel surrounding rock stress analysis and analysis blank, and higher precision and higher engineering reliability are realized.

The invention discloses an X-ray fluorescence spectroscopy analysis fusion sample preparation method of an aluminum, manganese, calcium and iron alloy, which comprises the steps of: firstly, coating a uniform protection wall layer in a platinum crucible by using lithium tetraborate, then placing an aluminum, manganese, calcium and iron sample, an oxidizing agent, a lithium borate solvent and a releasing agent into the platinum crucible in which the protection wall is coated, uniformly mixing, and then pre-oxidizing the aluminum, manganese, calcium and iron sample; and finally, melting the pre-oxidized aluminum, manganese, calcium and iron sample, and cooling to obtain an aluminum, manganese, calcium and iron sample glass fuse piece, wherein the aluminum, manganese, calcium and iron sample is a detection sample or calibration sample of the aluminum, manganese, calcium and iron alloy, and the sample glass fuse piece is a detection sample glass fuse piece or calibration sample glass fuse piece of the aluminum, manganese, calcium and iron alloy. On the premise of no corrosion to the valuable platinum crucible, the glass fuse piece can be prepared, and the prepared sample is excellent and uniform, thus the mineral effect and the grain size effect are completely eliminated.

The invention relates to a method for quickly determining gold, palladium, platinum, rhodium, iridium, silver, nickel, copper and iron in a rare and precious metal system. According to the detection principle of an inductively-coupled plasma-atomic emission spectrometry, the method comprises experimental conditions, sample treatment, working curve plotting, interference and elimination, detectionlimits and accuracy, wherein the experimental conditions comprise instrument selection, selection of analytical spectral lines, and determination of acidity of a system to be measured; the sample treatment comprises treatment and measurement of a test sample; the working curve plotting comprises preparation of a series of standard solutions, working curve plotting and calculation of analytical results; whether a spectral line of a coexistence element exists adjacent to the analytical spectral line of an element to be tested or not through the investigation and analysis of coexistence elementinterference is performed; determination is continuously performed for 11 times by using a blank solution excluding the element to be tested to obtain the detection limits and lower determination limits of the method; a precision experiment is conducted by repeatedly determining a sample for 11 times, and a standard recovery experiment of the sample is performed; and finally, compared with results obtained through the original determination method, the reliability of determined results of the method provided by the invention is further confirmed.

The invention discloses an underground cavity analysis method considering nonlinear softening and dilation characteristics of surrounding rock. According to the method, a hyperbolic softening model based on the characteristics of the Hoek-Brown criterion is established according to the characteristic that the strength parameter of the surrounding rock of a tunnel is weakened with the increasing of the strain of a plastic zone, the model is based on the characteristics of a resultant stress-strain curve of the surrounding rock, and reflects the nonlinear characteristics of the surrounding rock through example verification, the model is applied to analysis for the surrounding rock subjected to strain softening in underground construction, and a new method for an underground cavity analysis is established by considering the nonlinear softening and non-associated flow characteristics as well as a nonlinear failure criterion of a rock mass; the solutions of the stress of the underground cavity, the deformation of the cavity and the radius of the plastic zone are obtained; according to the method disclosed by the invention, the dilation characteristics of the surrounding rock are considered according to a non-associated flow criterion, and with regard to the deformations of the surrounding rock under different plastic models, application example results indicate that the strain dilation of a rock-soil material with dilation and strain softening is considered to be safe.

The invention discloses an air-ground integrated plant automatic detection system and method. The system comprises a front end collecting module, an unmanned aerial vehicle collecting module, a polarorbiting satellite remote sensing module and a rear end processing module; the front end collecting module is used for collecting meteorological factors, environmental factors and Chinese herb images;the unmanned aerial vehicle collecting module is used for collecting visible light images and multispectral remote sensing images; the polar orbiting satellite remote sensing module is used for collecting the regional image information and hyperspectral plant remote sensing images; and the rear end processing module is used for evaluating whether the current environment adapts to growing and developing of Chinese herbs or not by conducting historic storage, command control and real-time displaying and comprehensive analysis of the meteorological factors, the environmental factors and the images of the front end collecting module, conducting alarming on the corresponding situations, and predicting the yield. The method is simple and convenient to operate, and the data is accurate.

The invention discloses a test method and a test platform for performance of a wind-photovoltaic-hydrogen comprehensive energy power generating system. The method comprises the following steps: establishing mathematic models of three parts, namely a windmill generator, a photovoltaic cell and a hydrogen cell; making the mathematic models into software modules and presetting the software modules and attribute parameters together into an industrial computer to design controllable simulation natural environment and test and calculate to obtain a performance theory curve of various parts of the power generating system; making a performance actual curve of the various parts through actual performance of the various parts; and comparing the curves to judge whether the performance of the comprehensive energy power generating system meets the requirement. The test method and the test platform can provide convenience for technicians to detect, analyze and study the working condition of the wind-photovoltaic-hydrogen comprehensive energy power generating system so as to perform optimization design on the wind-photovoltaic-hydrogen comprehensive energy power generating system, wherein the adopted novel mathematic model of the windmill generator can make analysis results more accurate and reliable.

The present invention discloses a method for estimating a fracturing reformation volume of a shale gas horizontal well. The method comprises the following steps: performing, by a production gas well, a shut-in pressure recovery test; performing deconvolution processing on a pressure-yield material; transforming a deconvolution result into a pressure response by means of an integral; drawing a pressure difference curve and a pressure derivative curve on a double logarithmic plot; and performing conventional test well interpretation on a curve graph, to estimate a fracturing reformation volume of an artificial fractured gas reservoir. According to the estimation method, a technical problem of after-pressure evaluation of a shale gas horizontal well is resolved from a dynamic perspective. The method is a complementary technical means to fracturing reformation effect evaluation, and has characteristics of being rigorous in method, simple in application, and accurate and reliable in analysis result.

The invention discloses an automatic method for analyzing constitution and diversity of a bacterial community of a 16SrRNA gene. The automatic method comprises the following steps: in 16SrRNA sequencing data analysis process, by taking original sequencing sequence data as input, calling a standard analysis tool (such as Mothur and QIIME) of the industry, and performing visualization on data finally, thereby obtaining analysis results which are easy to analyze. The automatic method includes popular main analysis items at present, meanwhile analysis contents can be modularized, relatively rich and deep data mining analysis methods can be available, different analysis module contents can be combined according to different demands, and process procedures can be relatively reasonably arranged; and in addition, analysis errors caused by different sequencing depths can be eliminated, and the analysis results can be relatively comprehensive, accurate and reliable.

The invention relates to a connection analyzing method of a relay protection circuit in a power system. The method comprises the following steps: (3) judging whether the connection is correct or not according to the measuring value of each winding differentially protected by a converted main transformer or the measuring value of each circuit differentially protected by a bus; (4) performing first modification and judgment, and judging whether the connection way is correct or not after the first modification is finished; (5) performing second modification and judgment; (6) generating modified current effective value and storing the modified value satisfying the correct condition; and (7) outputting an analyzing result. The connection analyzing method of the relay protection circuit in the power system has high judgment and analysis reliability, simple use and convenient operation.

The invention discloses a power distribution network reconstruction multi-objective optimization method containing section switch configuration. The method comprises the following steps: constructing a global optimal multi-objective power distribution network reconstruction model for system reliability, electric energy loss as well as section switch installation and operating cost; using an ant colony algorithm to solve the reconstruction model; obtaining an optimal solution of the multi-objective power distribution network reconstruction model; and optimizing the quantity and positions of power distribution network switches according to the optimal solution so as to realize the global optimal multi-objective power distribution network reconstruction. The method has the beneficial effects that the system reliability can be greatly improved through optimal configuration of section switches according to the method provided by the invention, and the overall system cost can be greatly reduced.

The invention discloses a method for determining content of lanthanum, cerium, praseodymium, neodymium and samarium in iron-containing dust sludge. The method comprises the following steps: preparing a standard solution containing lanthanum, cerium, praseodymium, neodymium and samarium, preparing a rhodium internal standard solution, preparing a blank test sample with dissolved high-purity iron sample, and preparing a to-be-detected test sample with dissolved iron-containing dust sludge sample; introducing the standard solution into an inductance coupling plasma mass spectrometry to be measured to obtain a concentration calibration curve, then testing the blank test sample solution and the to-be-detected test sample solution in the inductance coupling plasma mass spectrometry, determining the concentration of the lanthanum, cerium, praseodymium, neodymium and samarium in the blank test sample and the to-be-detected test ample as CiO and Ci according to the concentration calibration curve, and then calculating the content of each element in the iron-containing dust sludge to-be-detected test sample according to the concentration difference value (Ci-CiO). The method has the characteristics of high sensitivity, high determination speed, simplicity in operation and small interference.

The invention discloses a concrete beam damage monitoring system and a monitoring method. The method comprises the following steps: presetting a set of two intelligent aggregates into a to-be-detectedconcrete beam; respectively using the two intelligent aggregates as a piezoelectric ceramic driver and a piezoelectric ceramic sensor; exciting the piezoelectric ceramic driver through a high pressure amplifier by utilizing a signal generated by a signal function generator; analyzing the collected signal by a signal processing module connected with the piezoelectric ceramic sensor, thereby acquiring a peak signal; comparing the peak signal with an initial value of the signal emitted by the signal function generator, thereby acquiring the interior condition of the to-be-detected concrete beam.The monitoring system has the advantages of sensitive sensing, safety, reliability and wide measuring scope. The monitoring system has a simple structure and high power, is suitable for monitoring various slant cracks and crossing cracks generated in the concrete beams at different shear span ratios and is capable of realizing the functions of horizonal and vertical bidirectional motivation and signal collection.

The invention relates to an analytic technique of seismic data quality. The invention has the following steps: firstly, selecting control point common shot gathers data, determining the maximum analytical frequency, selecting and analyzing frequency band according to the range of the effective reflected signal frequency in a target block, carrying out frequency wave filtering to each seismic channel of the data each cannon to obtain the frequency demultiplication result of each channel; adopting a formula (1) to make time domain median filter to all seismic channels of each frequency band in each cannon to obtain the statistical energy curve results of each frequency band, drawing the statistical energy curve results of each frequency band in the same cannon on an identical chart to obtain a time-frequency analysis chart. The invention can quantitatively reflect the data quality of data control point rapidly and correctly, avoid errors in human analysis and obtain reliable results.

The invention discloses a clenbuterol hydrochloride assay kit and its preparation method and use method. The clenbuterol hydrochloride assay kit comprises a kit body, a clenbuterol hydrochloride enzyme label plate, a clenbuterol hydrochloride standard solution, a clenbuterol hydrochloride enzyme conjugate, a diluent, a concentrated washing liquid, a first substrate and a second substrate. The preparation method provided by the invention comprises preparing the clenbuterol hydrochloride enzyme label plate, the clenbuterol hydrochloride standard solution, the clenbuterol hydrochloride enzyme conjugate, the diluent, the concentrated washing liquid, the first substrate and the second substrate. The use method provided by the invention comprises sample preparation, sample addition and detection, and detection result analysis. The clenbuterol hydrochloride assay kit has the advantages that sensitive, stable and reliable result analysis is realized; operation steps are less; sample pre-treatment is simple; adopted equipment can be popularized easily; and the clenbuterol hydrochloride assay kit can be utilized for determination of residual clenbuterol hydrochloride of pork, has sensitivity of 0.03 micrograms per kilogram, needs detection time shorter than detection time of an ELISA method by 30 minutes and satisfies requirements of rapid detection of clenbuterol hydrochloride residues.

{0><}0{>The invention relates to a method for measuring contents of gold and silver in a gold mud sample by virtue of fire assay and belongs to a method for measuring a gold mud material by virtue of a fire assay method. <0}{0><}0{>The method comprises the following steps of: burdening and fusing a test sample so as to obtain a proper amount of lead buttons and fragile molten slag; recycling residual gold and silver in the molten slag; separating gold and silver from the lead buttons through cupelling, thereby obtaining gold and silver combination particles; processing and weighing the particles; grinding the gold and silver combination particles into slices; separating gold by use of nitric acid; and weighing, and calculating contents of gold and silver. <0}{0><}0{>The method is capable of improving the experiment accuracy and simplifying experimental procedures, is convenient to operate, and is capable of realizing batch operation for samples and effectively improving the working efficiency.

The invention belongs to the technical field of the on-line detection and analysis of electric power system low-frequency oscillation. The invention provides a method for quantitatively evaluating the contribution degree of an electric generating set associated with a node participating in the oscillation of certain mode to the oscillation power of the mode in a power system, only based on the information of Wide Area Measurement System. In the method, a concept of node contribution factor is first proposed based on injection active oscillatory power, and then according to the amplitude of injection active oscillatory power and the relative phase position among active oscillatory power curves under certain frequency mode, an analysis and calculation method is provided corresponding to the node contribution factor of the frequency mode, and the homology and grouping of the node are realized at the same time. The method is applicable to a system without an electromagnetic ring net and consideration for losses and can also be used for an actual electric power system which has the above characteristics through simplification.

A method for predicting attributes of webpage crowd includes steps of (1) obtaining basic attribute information of users according to registration information of the user or user IDs (identifications), and preprocessing the basic attribute information to remove unreasonable attribute information of the user; (2) tracking webpage accessed by the user by the aid of loaded Cookie when the users access webpage, and collecting the accessed webpage; (3) computing influence of the word-pair webpage on tendency of the attributes of the users; (3.1) selecting text vector feature words according to differential gain DG of the attributes of the crowd and information gain; (3.2) computing influences of the words on the tendency of the attributes of the webpage crowd; (4) computing the tendency of the attributes of the crowd of a webpage theme; and (5) predicting the tendency of the attributes of the webpage crowd from the respects of the theme and the words respectively and then obtaining integral tendency of the attributes of the webpage crowd. The method is a reliable method for effectively determining the attributes of the webpage crowd in a targeted delivery manner.