33results about How to "Perfect theoretical basis" patented technology

The invention discloses a universal surface-enhanced Raman spectrum quantitative analysis method, comprising the following main contents of: 1) preparing an SERS (Surface Enhanced Raman Scattering) base with accurate quantitative function by marking the SERS base with proper amount of sulfhydryl compound; 2) performing SERS analysis detection on the to-be-measured substance by the quantitative SERS base, and building a novel SERS spectrum quantitative analysis model, namely a multiplier effect model; 3) using a special new SERS quantitative analysis strategy, namely, firstly estimating the multiplier effect of an SERS spectrum signal in a corrected sample, and eliminating the multiplier effect of the SERS spectrum signal in a to-be-measured sample through a 'dual-correction' strategy, thereby realizing accurate prediction on the concentration of the to-be-measured substance in the to-be-measured sample. The analysis method provided by the invention solves the problem of SERS spectrum accurate quantitative analysis of a complex chemical-biological system better.

The invention provides an accurate spectrum quantitative analysis method used for a complex heterogeneous mixture system. The method mainly comprises the steps of: 1) under certain spectrometer and experiment conditions, measuring the spectral data X of a calibration sample set; 2) calculating the light scattering multiplier effect vector p of the calibration sample set with the calibration sample set spectral data X and the concentration vector c of a corresponding target chemical component in a calibration sample; 3) establishing double calibration models: model I and model II among the calibration sample set spectral data X, multiplier effect vector p, and X as well as diag(c)p; 4) dividing a predicted value of the model II by a predicted value of the model I so as to obtain the concentration of the target component in the sample to be measured. The method of the invention realizes effective separation of a spectrum contribution caused by chemical component content change from a spectrum contribution caused by sample physical property change, and is an accurate spectrum quantitative analysis method used for a complex heterogeneous mixture system.

The invention provides a method for maintaining the predication capability of a spectrum correction model of a complex system under the conditions that an optical spectrum instrument or experiment conditions are changed. The method comprises the following steps of: 1) detecting the spectrum data of a plurality of standard samples; 2) predicting the concentration (or other chemical and physical properties) of an ingredient to be of detected of the standard sample from the spectrum data of the standard sample by using an original spectrum connection model, and predicating system offset; 3) building a prediction result correction model between the spectrum data of the standard sample and the system offset of the prediction result of the correction module; and 4) combining the prediction result correction model with the original correction model in use so as to solve the common problem that the accuracy of the prediction result varies with the optical spectrum instrument or the experiment conditions. The method is convenient to use and wide in application scope, realizes the sharing of the spectrum correction model among the instruments of the same kind and has validity for long-term use even if the experiment conditions are changed.

The invention provides a multi-channel conversion method based on spherical harmonic expansion. The multi-channel conversion method is mainly used for converting an L1-path multi-channel loudspeaker system into an L2-path multi-channel loudspeaker system. Based on the linear superposition theory of a sound field, spherical harmonics with corresponding orders are adopted according to different numbers of channels for calculating the sound field of the loudspeaker system which is not converted and the sound field of the loudspeaker system which is obtained after conversation, and gain coefficients of each loudspeaker of the loudspeaker system obtained after conversation are calculated under the situation that the spherical harmonic expansion sound field of the loudspeaker system which is not converted and the spherical harmonic expansion sound field of the loudspeaker system which is obtained after conversation are the same under the certain order. According to the multi-channel conversion method based on spherical harmonic expansion, the real-time algorithm complexity is low, the sound field of an original reproducing system in a listening area can be recovered on the system obtained after conversation, the method can be used for streamline compression and hybrid technology of a multi-channel three-dimensional audio system, effective compatibility of various loudspeaker reproduction systems can be achieved, and the transmission bandwidth is reduced.

The invention relates to a method for distance modulation of a three-dimensional audio system. The method comprises steps of simplifying M channels of multi-channel 3-dimentional audio signals to N channels of multi-channel 3-dimentional audio signals, calculating the distance between the virtual acoustic image and the listening point in a multi-channel system, calculating acoustic features at the center point position, which includes the sound pressure, the particle velocity and the binaural sound pressure which are received by the center point position, establishing an optimized-distance module, and distributing speaker signals to recovery distance perception again. Based on part of principle in the basic acoustics, the theoretical basis is perfect, the calculation cost is low, the original distance perception can be restored, and the method can be applied to various simple speaker systems.

The invention discloses a Raman spectrum accurate quantitative analysis method of a powder mixture, which includes the following main steps: 1 collecting Raman spectrum data Ica1 of k correction samples, 2 adopting a model to describe the Raman spectral intensity 1k (v) of the kth sample at the position of Raman displacement v and the relationship between mass percents wk and j of J chemical components in the sample, 3 utilizing Ica1 and the content vector wj of the target chemical components of a correction sample set to estimate the multiplier effect vector q of the correction sample set, 4 respectivley establishing a linear correction model between Ica1 and diag (wj) q and between Ica1 and q, and 5 accurately predicting the content of the to-be-detected component from Raman spectrum Itest of an unknown to-be-detected sample by utilizing the established double-correction model. The Raman spectrum accurate quantitative analysis method of the powder mixture resolves the common problem that degree of accuracy of quantitative analysis results of powder samples is poor by the adoption of the Raman spectrum technique and makes it possible to achieve accurate quantitative analysis for a powder mixture system by the adoption of the Raman spectrum technique.

The invention relates to detection reagents and detection methods for porcine reproductive and respiratory syndrome virus (PRRSV). On the one hand, the invention provides immunogenic fragments in coded non-structural protein 2 (Nsp2), and in particular, the immunogenic fragments provided in the invention exist in Nsp2 protein of wild type PRRSV instead of in Nsp2 protein of attenuation PRRSV; on the other hand, the invention also provides oligonucleotide primers, and in particular, a to-be-amplified area of the oligonucleotide primers provided in the invention includes at least a part of the coding sequence of Nsp2 protein and the part of the coding sequence exists in Nsp2 coding sequence of wild type PRRSV instead of in Nsp2 coding sequence of attenuation PRRSV. The invention further provides the methods of using relevant detection reagents in detection and a method of using the above-mentioned methods to distinguish pigs immunized by attenuation PRRSV from pigs infected by wild type PRRSV.

The invention provides a method for recovering gas content of shale. According to the method, the original gas content of the shale is recovered according to adsorption gas content and pore volume gas content, wherein on the theoretical bases of Polanyi adsorption potential, the London chromatic dispersion interaction potential energy theory and a gas state equation in combination of a core column methane isothermal adsorption curve, test data of gas components as well as porosity and water saturation of the shale, recovery of the adsorption gas content is acquired through adsorption gas content change of gas at the formation temperature and at the temperature of 95 DEG C in the analytical process and; recovery of the pore volume gas content is acquired by adopting test data of the porosity and the water saturation through the state equation. According to the method for recovering the gas content of the shale, the theoretical bases are further perfected, the original content of each gas component of the shale can be recovered, and mineability of a shale gas reservoir can be evaluated more accurately, more objectively and more comprehensively.

The invention relates to the technical field of power plant maintenance task scheduling, in particular to a hill wind power plant maintenance task intelligent scheduling method, which comprises the following steps of S1, collecting maintenance task information and states; S2, collecting task resource information; S3, sorting the execution priorities of the maintenance tasks, and sorting the execution priorities of the maintenance tasks according to comprehensive calculation of the emergency degree of the tasks, the importance degree of maintenance equipment and the latest maintenance completion time factor; S4, performing a maintenance task resource allocation scheme; and S5, processing the tasks according to the task execution sequence and the resource allocation scheme. According to thehill wind power plant task scheduling method based on various resource constraint conditions, priority maintenance and execution of important equipment and important maintenance plans of a wind powerplant can be ensured, and through distribution of various task resources, the utilization rate of maintenance resources can be increased, the maintenance period of the equipment can be shortened, andthe effective utilization rate of the equipment for wind power generation can be increased.

The invention provides a suspension type curtain pressure-bearing water foundation pit pump output determination method based on three-dimensional drawdown. Water level drawdown control value outsidea pit is firstly calculated, and the total water inflow control value is derived; after safe drawdown of the top of in-pit bearing water is determined, and the dewatering scheme is distributed, the foundation pit total water inflow mount and single well pump output of the dewatering scheme are determined through the safe drawdown control value of the in-pit bearing water, and then whether the foundation pit water inflow amount is in the control value or not can be further checked. According to the suspension type curtain pressure-bearing water foundation pit pump output determination method, based on the Darcy law and the flow equilibrium theorem, the three-dimensional seepage field formed by foundation pit dewatering below a suspension type water-stopping curtain and safe water level drawdown inside the pit and outside the pit are fully considered, the pump outputs of the foundation pit and a dewatering well under specific dewatering schemes can be precisely calculated, and it also can be guaranteed that the water level drawdown of the bearing water inside the pit and outside the pit according to the pump outputs are both in a safe control range. According to the constituted dewatering schemes based on the suspension type curtain pressure-bearing water foundation pit pump output determination method, the construction cost is lowered, and safety of dewatering construction is also ensured.

The invention discloses an urban medium-voltage distribution cable partial discharge signal denoising method. In order to suppress periodic narrowband interference, a K-means clustering algorithm is used to classify noisy partial discharge signal spectrums. In order to suppress white noise interference, an improved empirical Wavelet Transform (EWT) algorithm based on an Order Statistic Filter (OSF) is provided, and the method comprises the following steps: firstly, estimating an envelope line on a signal frequency spectrum by using the OSF, reasonably segmenting the signal frequency spectrum, then, carrying out adaptive decomposition on a signal by using the EWT, introducing a kurtosis criterion to select a useful modal component, and finally, carrying out adaptive decomposition on the signal by using the EWT. And finally, reconstructing a partial discharge signal through threshold denoising. In combination with the K-means clustering algorithm and the empirical wavelet transform, the method provided by the invention does not need to modify algorithm parameters, can perform adaptive denoising on white noise and periodic narrow-band interference at the same time, can effectively reserve signal details while having a high denoising signal-to-noise ratio, and is relatively high in algorithm efficiency.

The invention provides a self-adaptive new Chinese word recognition method and system. The method comprises the following steps: a text initialization step: carrying out the structural processing of an input text, and obtaining a wide character sequence which contains original Chinese characters and maintains the adjacent relation and interval relation of the Chinese characters in an original text; a non-accidental co-occurrence judgment step: using binomial distribution or Poisson distribution to approximately characterize probability distribution of front and back adjacent occurrence of a pair of Chinese characters, and determining all non-accidental co-occurrence adjacent Chinese character pairs in the text text text based on a given non-accidental co-occurrence significance level alphap; a statistical relevance judgment step: giving a relevance significance level alpha k, judging the relevance degree of adjacent Chinese characters in the text, and screening out Chinese character strings with internal strong relevance; and an existing word bank filtering step: based on an existing dictionary, screening out Chinese character strings which do not appear in the dictionary yet fromcharacter strings which meet non-accidental co-occurrence and are high in internal relevance.

The invention provides a multi-channel conversion method based on spherical harmonic expansion. The multi-channel conversion method is mainly used for converting an L1-path multi-channel loudspeaker system into an L2-path multi-channel loudspeaker system. Based on the linear superposition theory of a sound field, spherical harmonics with corresponding orders are adopted according to different numbers of channels for calculating the sound field of the loudspeaker system which is not converted and the sound field of the loudspeaker system which is obtained after conversation, and gain coefficients of each loudspeaker of the loudspeaker system obtained after conversation are calculated under the situation that the spherical harmonic expansion sound field of the loudspeaker system which is not converted and the spherical harmonic expansion sound field of the loudspeaker system which is obtained after conversation are the same under the certain order. According to the multi-channel conversion method based on spherical harmonic expansion, the real-time algorithm complexity is low, the sound field of an original reproducing system in a listening area can be recovered on the system obtained after conversation, the method can be used for streamline compression and hybrid technology of a multi-channel three-dimensional audio system, effective compatibility of various loudspeaker reproduction systems can be achieved, and the transmission bandwidth is reduced.

The invention provides an accurate spectrum quantitative analysis method used for a complex heterogeneous mixture system. The method mainly comprises the steps of: 1) under certain spectrometer and experiment conditions, measuring the spectral data X of a calibration sample set; 2) calculating the light scattering multiplier effect vector p of the calibration sample set with the calibration sample set spectral data X and the concentration vector c of a corresponding target chemical component in a calibration sample; 3) establishing double calibration models: model I and model II among the calibration sample set spectral data X, multiplier effect vector p, and X as well as diag(c)p; 4) dividing a predicted value of the model II by a predicted value of the model I so as to obtain the concentration of the target component in the sample to be measured. The method of the invention realizes effective separation of a spectrum contribution caused by chemical component content change from a spectrum contribution caused by sample physical property change, and is an accurate spectrum quantitative analysis method used for a complex heterogeneous mixture system.

The present invention provides a method for recovering the gas content of shale. The method restores the original gas content of mud shale through adsorption gas content and pore volume gas content, wherein the recovery of the adsorption gas content is based on Polanyi adsorption potential and London dispersion effect Potential energy theory and gas state equation are the theoretical basis, combined with the core column methane adsorption isotherm curve, gas component test data, shale porosity and water saturation, through the gas adsorption gas content between the formation temperature and 95 °C analysis process The change is obtained; the recovery of the pore volume and gas content is obtained through the state equation using the test data of porosity and water saturation. The theoretical basis of the gas content recovery method is more perfect, and it can restore the original content of each gas component in shale, which is conducive to more accurate, objective and comprehensive evaluation of the recoverability of shale gas reservoirs.

The invention discloses a steel coil production time optimization calculation method in a cold rolling process and application thereof, and belongs to the field of cold rolling strip steel. Aiming at the problem of low accuracy of production time of a steel coil on a production line in a strip steel cold rolling process in the prior art, the method comprises the following steps of 1, acquiring steel coil production action time information by an electrical primary system; 2, using a secondary process control system to calculate the time data collected in step 1 to obtain the production starting time and the production ending time of each sub-coil, and uploading calculation results to a tertiary manufacturing execution system through an interface in the form of data messages; 3, using the tertiary manufacturing execution system to summarize and arrange the received data, then collecting the data into production actual performance, and ensuring that workers look up production actual performance data through client software. The method can improve the accuracy of production time in a continuous annealing or continuous plating process, and is convenient for production process control and capacity release.

The invention provides a suspension type curtain pressure-bearing water foundation pit pump output determination method based on three-dimensional drawdown. Water level drawdown control value outsidea pit is firstly calculated, and the total water inflow control value is derived; after safe drawdown of the top of in-pit bearing water is determined, and the dewatering scheme is distributed, the foundation pit total water inflow mount and single well pump output of the dewatering scheme are determined through the safe drawdown control value of the in-pit bearing water, and then whether the foundation pit water inflow amount is in the control value or not can be further checked. According to the suspension type curtain pressure-bearing water foundation pit pump output determination method, based on the Darcy law and the flow equilibrium theorem, the three-dimensional seepage field formed by foundation pit dewatering below a suspension type water-stopping curtain and safe water level drawdown inside the pit and outside the pit are fully considered, the pump outputs of the foundation pit and a dewatering well under specific dewatering schemes can be precisely calculated, and it also can be guaranteed that the water level drawdown of the bearing water inside the pit and outside the pit according to the pump outputs are both in a safe control range. According to the constituted dewatering schemes based on the suspension type curtain pressure-bearing water foundation pit pump output determination method, the construction cost is lowered, and safety of dewatering construction is also ensured.

The invention discloses a time-varying distributed dynamic confluence calculation method, and belongs to the field of runoff forecasting. According to the method, the terrain index is introduced to describe the spatial non-uniform distribution of the watershed grid water storage capacity, the water storage capacity of each grid can be quantitatively represented, the runoff production calculation result is combined, the watershed full storage grid and the watershed full storage grid can be divided from the grid scale, and a higher-precision input field can be provided for grid flow velocity field calculation; according to the method, a confluence velocity calculation formula considering the time-varying rainfall intensity and the soil water content is provided, and the spatial distribution rule of the flow velocity field is described more accurately; according to the method, the dynamic confluence paths of the drainage basin under different full storage proportions are deduced based on the theoretical basis of runoff production of the full storage area and no full storage and runoff production, the theoretical basis of unit line deduction is perfected, the accuracy of distributed unit line confluence time calculation is improved, the problem that the flood peak of traditional distributed unit line forecasting is large is solved, and the method is suitable for popularization and application. And the flood prediction accuracy is improved.

The invention discloses a safety monitoring positioning and image returning system and method of cable tunnel repairing staff. The safety monitoring positioning and image returning system comprises an audio and video terminal, a safety monitoring terminal and a sound and light alarm device, wherein the audio and video terminal is used for acquiring voice and video information in a cable tunnel and transmitting the voice and video information into a comprehensive management platform through a tunnel communication module; the safety monitoring terminal is used for monitoring the biological information of the cable tunnel repairing staff and transmitting the monitored information to the comprehensive management platform through the tunnel communication module; the sound and light alarm device is connected with the safety monitoring terminal and is used for carrying out sound and light alarm when data monitored by the safety monitoring terminal does not meet pre-set conditions; a positioning label is used for positioning the cable tunnel repairing staff; and the positioning label is communicated with a positioning base station and is used for transmitting positioning information to a positioning management system of the comprehensive management platform. By adopting the safety monitoring positioning and image returning system and method, the data in a cable tunnel can be uploaded in real time and the staff can be accurately positioned, so that the safety of the staff and the accuracy of the data are ensured.

The invention provides a chiral drug mass spectrometry quantitative analysis method based on a chemical derivatization reaction and spectral deformation quantitative analysis theory, and the main process is as follows: 1) preparing a chiral acyl chloride probe capable of reacting with a chiral drug by an organic synthesis reaction; 2) using the chiral probe to react with the chiral drug to producea diastereomer complex product; 3) using mass spectrometry to determine the mass spectral data of each fragment ion of the diastereomer complex product; 4) using the spectral deformation quantitativeanalysis theory to extract quantitative information of a target components in the chiral drug from the mass spectral data of the diastereomer complex product. The chiral drug mass spectrometry quantitative analysis method is suitable for quantitative analysis of nitrogen, sulfur or phosphorus-containing chiral drugs without using a chromatography column, and provides a simple, low-cost, sensitiveand accurate chiral drug detection method in the medical field.

The invention discloses a Raman spectrum accurate quantitative analysis method of a powder mixture, which includes the following main steps: 1 collecting Raman spectrum data Ica1 of k correction samples, 2 adopting a model to describe the Raman spectral intensity 1k (v) of the kth sample at the position of Raman displacement v and the relationship between mass percents wk and j of J chemical components in the sample, 3 utilizing Ica1 and the content vector wj of the target chemical components of a correction sample set to estimate the multiplier effect vector q of the correction sample set, 4 respectivley establishing a linear correction model between Ica1 and diag (wj) q and between Ica1 and q, and 5 accurately predicting the content of the to-be-detected component from Raman spectrum Itest of an unknown to-be-detected sample by utilizing the established double-correction model. The Raman spectrum accurate quantitative analysis method of the powder mixture resolves the common problem that degree of accuracy of quantitative analysis results of powder samples is poor by the adoption of the Raman spectrum technique and makes it possible to achieve accurate quantitative analysis for a powder mixture system by the adoption of the Raman spectrum technique.

The invention discloses a universal surface-enhanced Raman spectrum quantitative analysis method, comprising the following main contents of: 1) preparing an SERS (Surface Enhanced Raman Scattering) base with accurate quantitative function by marking the SERS base with proper amount of sulfhydryl compound; 2) performing SERS analysis detection on the to-be-measured substance by the quantitative SERS base, and building a novel SERS spectrum quantitative analysis model, namely a multiplier effect model; 3) using a special new SERS quantitative analysis strategy, namely, firstly estimating the multiplier effect of an SERS spectrum signal in a corrected sample, and eliminating the multiplier effect of the SERS spectrum signal in a to-be-measured sample through a 'dual-correction' strategy, thereby realizing accurate prediction on the concentration of the to-be-measured substance in the to-be-measured sample. The analysis method provided by the invention solves the problem of SERS spectrum accurate quantitative analysis of a complex chemical-biological system better.

The invention relates to a method for distance modulation of a three-dimensional audio system. The method comprises steps of simplifying M channels of multi-channel 3-dimentional audio signals to N channels of multi-channel 3-dimentional audio signals, calculating the distance between the virtual acoustic image and the listening point in a multi-channel system, calculating acoustic features at the center point position, which includes the sound pressure, the particle velocity and the binaural sound pressure which are received by the center point position, establishing an optimized-distance module, and distributing speaker signals to recovery distance perception again. Based on part of principle in the basic acoustics, the theoretical basis is perfect, the calculation cost is low, the original distance perception can be restored, and the method can be applied to various simple speaker systems.

The invention discloses an exonuclease III aided target cycle amplification based unmarked DNA mass spectrum quantitative analysis method. According to the method, exonuclease III aided target cycle amplification strategy, mass spectrum and wave spectrum deformation quantitative theory model are combined together, so as to realize sensitive and accurate quantitative analysis of target DNA in a complicated biologicla sample. Meanwhile, the method overcomes disadvantages of existing methods for identifying single nucleotide polymorphism, and by utilizing the characteristic that mass spectrum hasa capacity of identifying different residual DNA segments, the strategy provided by the invention can clearly identify single nucleotide polymorphism.

The invention discloses a preparation system of a mine microorganism mineralized filling material. The preparation system comprises a manual liquid taking and injecting system, an eight-channel mineralized liquid pouring system and a material soaking and maintaining system, all the systems are placed in a fume cupboard; the manual liquid taking and injecting system is used for accurately and quickly measuring, taking and injecting liquid; the eight-channel mineralization liquid filling system is used for efficiently pumping mineralization liquid and bacterium liquid of multiple test pieces; the material soaking and maintaining system is used for further enhancing the strength of the mine microorganism mineralized filling material. According to the invention, a plurality of mineralized material test pieces can be efficiently prepared at the same time, the material strength is further enhanced, and the mine environment temperature is simulated to a great extent, so that a new process isprovided for the preparation of a novel filling material, and the method is better used for preparing a microbial mineralized filling material in a mine; the theoretical basis of the preparation method of the novel mine filling material is enriched.

A shale gas horizontal well osculating cutting fracturing perforation parameter optimization design method comprises the steps that firstly, a displacement discontinuity method is adopted to describe the relation between stress and crack width, fluid flow equations in a shaft and a crack are coupled, and meanwhile the influence of fracturing fluid filtration loss and hole friction resistance is considered; a complete fluid-solid coupling shale gas horizontal well close cutting fracturing multi-crack synchronous expansion model is established; secondly, a displacement discontinuity method and a finite volume method are adopted to discretize the multi-fracture expansion model, a Newton-Raphson iteration method is adopted to solve a global nonlinear coupling equation set, and a calculation program is compiled; and finally, calculating the uniform development degree index of each cluster of hydraulic fractures under different perforation parameter scheme conditions, and determining the optimal perforation parameter scheme by referring to the quantitative standard of the optimized perforation parameters. The defect that the application effect is unstable due to the fact that existing perforation parameter optimization design is only based on engineering experience and lacks theoretical basis is overcome, and a new method is provided for perforation parameter optimization design of close cutting fracturing of the shale gas horizontal well.

The invention relates to a monohydric phenol urine test kit capable of resisting the interference of urine components and its preparation method, operation method and application, belonging to the field of biomedical testing. The test kit of the present invention is composed of a main bottle (ampule bottle) reagent and an auxiliary bottle (plastic bottle) reagent, wherein: the main bottle reagent is made of mercury, concentrated nitric acid, copper sulfate and distilled water as raw materials, and the auxiliary bottle The reagent consists of sodium nitrite and distilled water. The kit of the invention is prepared from mercury, concentrated nitric acid, copper sulfate and sodium nitrite through chemical reaction and solution. The urine test kit of the present invention has the function of resisting the interference of clinical urine sample components such as urea and protein, has high stability, short color reaction time, and high color sensitivity, which increases the applicability of the urine test reagent to various clinical urine samples , improve the validity and objectivity of the urine test, and can avoid the missed detection of clinical positive samples due to the interference of urine components urea and protein.

This application relates to detection reagents and detection methods for porcine reproductive and respiratory viruses. In one aspect, the invention provides immunogenic fragments of encoded non-structural protein 2 (Nsp2). In particular, the immunogenic fragments provided herein are not present in the Nsp2 protein of attenuated PRRSV but are present in the Nsp2 protein of wild-type PRRSV. In another aspect, the invention also provides oligonucleotide primers. In particular, the region to be amplified by the oligonucleotide primers provided by the present application includes at least part of the coding sequence of the Nsp2 protein, which is not present in the Nsp2 coding sequence of attenuated PRRSV, but is present in the Nsp2 coding sequence of wild-type PRRSV. . This application also provides methods for detecting these related detection reagents, and methods for using these methods to distinguish attenuated PRRSV-immune pigs from wild-type PRRSV-infected pigs.

The invention provides a self-adaptive new word labeling method and system based on vocabulary text difficulty, and the method comprises the following steps: 1, carrying out the evaluation of the text vocabulary difficulty, and calculating the n-times alpha probability quantile of a vocabulary w in a text text containing N words; 2, performing word list comparison, determining out-of-outline vocabularies which are not in the word library Lex in the text text, sorting the vocabularies according to difficulty, and storing the sorted vocabularies; 3, labeling new words, calculating an accumulated vocabulary quantity based on a vocabulary text difficulty vocabulary list, and labeling the new words exceeding difficulty requirements; and 4, performing text difficulty evaluation, and giving text difficulty prompt information. According to the method, automatic labeling of the reading text new words can be automatically realized according to the learning stage of the learner, the specific word use condition of the text and the real level of the learner.