690 results about "High-performance liquid chromatography" patented technology

The invention provides an HPLC (High Performance Liquid Chromatography) dual-mode communication stability method, medium and system, and belongs to the technical field of dual-channel multiplexing communication, and the method comprises the following steps: firstly, collecting HPLC low-frequency / high-frequency carrier signals, working voltage / current, temperature and electromagnetic interference data in real time; stable, variable and noise components of a carrier signal are respectively obtained through empirical mode decomposition, and a correlation coefficient matrix of the variable components and interference factors is established by using multiple linear regression and singular value decomposition. And calculating a signal intensity, a signal-to-noise ratio and an error rate evaluation matrix based on the stability coefficient matrix, and constructing an abnormal feature matrix in combination with a communication protocol specification. And finally, inputting the features into a five-layer full-connection neural network, outputting fault type probability distribution through a softmax function, and taking the type corresponding to the maximum probability value as a diagnosis result. According to the invention, the technical problem of rapid and accurate diagnosis of HPLC communication stability in a complex and changeable low-voltage distribution network environment is solved.

The invention discloses a method for improving transformer area crosstalk of HPLC (High Performance Liquid Chromatography) and micropower wireless dual-mode communication, which comprises the following steps of: S1, electrifying an acquisition terminal equipment node, and aligning signal acquisition time windows of two communication modes; s2, combining the obtained dual-mode signal parameters with a preset transformer area topology database to generate feature vectors of multi-dimensional features; s3, training to generate a random forest model, inputting feature vectors of multi-dimensional features, dynamically calculating the affiliation weight value of the transformer area, and carrying out nonlinear weighted calculation on the feature vectors; and S4, on the basis of weight comparison and transformer area boundary node processing, correcting measurement errors by combining the transformer area attribution weight value with a preset impedance shielding compensation algorithm, generating a unique transformer area identifier, locking a networking relationship, and executing transformer area attribution judgment. According to the method, the wide coverage advantage of HPLC is reserved, meanwhile, the space attenuation characteristic of wireless communication is used for achieving accurate recognition of the transformer area boundary, and the installation and acquisition stability of the use and acquisition terminal equipment can be improved.

The invention discloses a network communication dynamic optimization method based on multi-module collaboration, and relates to the technical field of network communication, a dual-mode communication module is deployed at each network node, and the network communication dynamic optimization method comprises the following steps: each network node broadcasts own existence information and power line channel characteristics through an HPLC (High Performance Liquid Chromatography) channel of the dual-mode communication module; each network node scans surrounding wireless networks through an HRF channel of the dual-mode communication module and reports own wireless channel quality information to the gateway; the global state sensing module collects all information and constructs a global network view containing physical topology and a channel quality map. A dual-mode cooperation mechanism, a machine learning prediction model and a dynamic decision strategy can adapt to complex dynamic environments such as power line noise fluctuation and wireless interference change, and communication parameters can be autonomously optimized without manual intervention; and meanwhile, the modular design is convenient to expand to a multi-mode communication scene, and has a wide application prospect.

The invention relates to the technical field of intelligent power grid communication, and discloses an HPLC communication-oriented power topology adaptive reconstruction and energy consumption optimization control method, which comprises the following steps of: acquiring HPLC communication characteristic data of power network nodes in real time; constructing a dynamic spatio-temporal topological graph based on the communication feature data and predicting a future topological state; generating a communication power distribution and routing path joint optimization strategy by using a multi-target reinforcement learning algorithm in combination with the predicted future topology state and the real-time energy consumption parameter; verifying the electromagnetic compatibility and protocol compliance of the optimization strategy through a digital twin model, and generating a control instruction which can be executed by equipment; and the transmitting power and the communication route of the HPLC node are dynamically adjusted through the control instruction. According to the method, the communication quality stability and the energy efficiency level are improved, topology dynamic perception, multi-target collaborative optimization and strategy security verification are realized, and efficient and reliable operation of HPLC communication in a complex power grid environment is guaranteed.

The invention discloses a method for detecting the residual quantity of dextran sulfate sodium in an antibody. Specifically, the invention provides a method for detecting the residual quantity of dextran sulfate sodium in an antibody, which comprises the following steps: removing protein in the antibody, and reacting with a 2-aminopyridine solution; a high performance liquid chromatography method is adopted to detect a test sample and sodium dextran sulfate standard substances with different concentrations. The detection method disclosed by the invention is low in detection limit, high in accuracy and suitable for analyzing the residual quantity of dextran sulfate in the antibody.

The invention relates to the technical field of ecological system service function evaluation. The invention relates to a frequency offset correction algorithm in HPLC (High Performance Liquid Chromatography) + HRF (High Radio Frequency) dual-mode communication. The method comprises the following steps: S1, collecting phase sequence data from an HPLC communication link, collecting frequency offset estimation data and corresponding confidence data from an HRF communication link, and adaptively adjusting a preset detection threshold value of the phase sequence data according to the confidence data; s2, performing pulse abnormal sample point detection and elimination on the phase sequence data according to the adjusted preset detection threshold value; according to the method, the detection threshold is dynamically adjusted through the confidence data, so that the anomaly detection process can be matched with the current interference environment in real time, the integrity of the phase sequence data is maintained, and the problem of insufficient adaptability of a fixed detection threshold in an electromagnetic interference dynamic change scene is solved; and a more reliable phase data basis is provided for subsequent interpolation compensation and frequency offset estimation, so that the frequency offset correction precision of the dual-mode communication system is improved.

The invention relates to the technical field of data communication, and discloses an HPLC-HRF (High Performance Liquid Chromatography-High Radio Frequency) collaborative dual-mode data communication optimization method, which comprises the steps of data acquisition, data preprocessing, data transmission, central data processing and the like. According to the HPLC-HRF collaborative dual-mode data communication optimization method, data transmission is carried out by using an HPLC network and an HRF network in parallel, the bandwidths and the coverage ranges of the two networks are fully utilized, the overall efficiency of data transmission is improved, the data volume required by transmission is further reduced through the application of a data compression technology, the data transmission speed is increased, and the data transmission efficiency is improved. Redundant backup of data is ensured through a multi-path transmission strategy, even if one transmission path breaks down, the data can still safely arrive at a destination through other paths, temporary storage and recovery functions of the data in the transmission process are provided through a data caching and recovery mechanism, the risk of data loss is reduced, and the data transmission efficiency is improved. Through a network fault automatic switching mechanism, the standby network can be rapidly switched when the network fault is detected, and the continuity of data transmission is ensured.

The invention relates to the technical field of electric power communication, in particular to a dual-mode communication network identity authentication method based on HPLC (High Performance Liquid Chromatography) and HRF (High Performance Radio Frequency), which comprises the following steps: S1, a reading controller establishes initial connection with a CCO through an HPLC communication channel; s2, sending an identity authentication request to the CCO through the reading controller; s3, after the CCO receives the authentication request, performing dual identity authentication; s4, verifying the verification information, and if the verification is passed, returning authentication result confirmation information to the CCO; if the verification is not passed, a re-authentication request is initiated; s5, establishing data transmission connection with the HRF dual-mode communication channel through the HPLC; and S6, if the HPLC communication channel is abnormal, the reading controller is automatically switched to the HRF communication channel. According to the identity authentication method based on HPLC and HRF dual-mode communication, the communication stability is guaranteed, the safety of identity authentication and the continuity of data transmission are improved, and the problems of reliability and safety caused by a single communication channel in the prior art are effectively solved.

The invention discloses a rhizoma menispermi medicinal material and formula granule UPLC (Ultra Performance Liquid Chromatography) identification method, which is characterized in that specified values of relative retention time of the rhizoma menispermi medicinal material and formula granule are determined through a high performance liquid chromatography, and the relative retention time of a corresponding test solution is respectively within + / -10% of the corresponding specified values of the rhizoma menispermi medicinal material and formula granule. The method can effectively identify the rhizoma menispermi medicinal material and the formula granules, can be used for identifying rhizoma menispermi and counterfeit berba aristolochiae mollissimae and subprostrate sophora medicinal materials and formula granules, and can also be used for identifying rhizoma coptidis, cortex phellodendri, caulis sinomenii and other medicinal materials containing alkaloid components and formula granules. The method overcomes the defects of the existing method, and has the characteristics of simplicity in operation, good stability, rich chromatographic peak information amount, good repeatability and high stability.

The invention provides a data acquisition method, system and device based on HPLC and HRF dual-mode communication and a medium, and relates to the technical field of data acquisition. The data acquisition method based on HPLC and HRF dual-mode communication comprises the following steps: acquiring a pre-constructed data acquisition network topology, a networking state of the data acquisition network topology and an initial routing table; determining a target data transmission path according to the networking state, the data acquisition network topology and a preset shortest path calculation mode; generating a target routing table according to the target data transmission path and the initial routing table; and acquiring key load data according to the target routing table, allocating weights to the plurality of ammeters, determining a data acquisition sequence according to the key load data, the weights and a preset sorting mode, and acquiring power utilization data of the plurality of ammeters according to the data acquisition sequence. According to the method, the shortest path is calculated and the acquisition sequence is set, so that the accuracy and integrity of the data are ensured, and the precision of the acquired power consumption data is improved.

The invention relates to the technical field of power line carrier communication control, in particular to a communication control method based on a power line carrier dual-mode communication module, which comprises the following steps of: S1, constructing a channel quality dynamic scoring model and outputting a channel quality score by collecting data packets of HPLC (High Performance Liquid Chromatography) and HRF (High Frequency Radio Frequency) carrier channels in real time; s2, establishing a dual-mode communication time period dynamic decision algorithm, setting a dynamic threshold value at the same time, and automatically triggering a dual-mode communication time period forward mechanism according to the channel quality score; when the method is used, the dual-mode verification strategy is intelligently adjusted according to the real-time communication state, the verification frequency and duration can be conveniently improved in the serious interference time period, the overall communication reliability and the data accuracy can be improved, the adoption of the dual-mode verification strategy in the fixed time period is avoided, and meanwhile, the verification efficiency is improved. When the channel quality is good, the communication burden is reduced, the communication efficiency is improved, and the purpose of considering both stability and high efficiency is achieved.

The invention provides an electric power internet of things minute-level data acquisition method based on hierarchical time synchronization, which comprises the following steps of: 1, dividing an HPLC (High Performance Liquid Chromatography) channel into a time synchronization time slot and a data uploading time slot, and dynamically adjusting the bandwidth proportion of the time synchronization time slot and the data uploading time slot; 2, clock skew compensation is completed through bidirectional message interaction of the master node and the slave node, and a uniform minute-level time framework of the whole network is established; step 3, based on the local clock calibrated by the terminal equipment, calculating an accurate acquisition triggering moment by combining the distributed offset parameters, and when a preset time slot is reached, automatically executing instantaneous sampling of data; and 4, constructing a priority evaluation model based on the voltage abrupt change rate and the emergency level, calculating data acquisition priorities in real time, and executing corresponding operations according to different priorities. According to the method, active preemptive transmission of fault feature data in a single acquisition period is realized through a dynamic priority model in which the voltage break rate is linked with the event level.

The invention relates to the technical field of power grid communication, and discloses an HPLC (High Performance Liquid Chromatography) and HRF (High Radio Frequency) dual-mode communication hybrid data transmission control method, which comprises the following steps of: 1, initializing hardware parameters of an HPLC module and an HRF module, and configuring a frequency band range of a power line coupler and a radio frequency front end; step 2, dynamically calibrating fractional order model parameters of the dual-mode channel based on frequency band ranges of the HPLC module and the HRF module; and step 3, analyzing the service type of the data packet by using the fractional order model parameters, and calculating the four-dimensional QoS demand weight. According to the technical scheme, the technical scheme of four-dimensional QoS dynamic weight distribution and fractional order HJB equation optimization is adopted, and the technical effect of cooperative control and dynamic optimization of multi-dimensional service quality is achieved. The method solves the problems that a traditional method cannot meet the requirements of real-time performance, reliability, energy efficiency and safety at the same time in a time-varying channel environment, and resource allocation is rigid due to fixed weight.

The invention discloses a transformer area HPLC data cleaning method and system based on a complex environment, and the method comprises the steps: collecting electrical data of a transformer area high-speed power line carrier HPLC to form a data set, and carrying out the preprocessing and dividing of the data set, and obtaining a training data set; an Informer model is improved based on a self-attention mechanism, and the improved Informer model is trained in combination with the training data set; and inputting the real electrical data adopted in the sliding window into the trained and improved Informer model to predict the electrical data, and judging whether the real electrical data is abnormal or not according to whether the real electrical data value conforms to the distribution of the predicted value in the sliding window or not. According to the method, the Informer model is improved, the time complexity and the memory utilization rate are reduced through a sparse self-attention mechanism, attention is highlighted through self-attention distillation operation, propagation of accumulative errors is avoided, abnormity judgment is carried out on transformer area data in a complex environment through the improved Informer model, and the recognition accuracy of abnormal data can be improved.

The invention discloses an oligopeptide from undaria pinnatifida and application thereof. The amino acid sequence of the oligopeptide is YRKD, and the molecular weight is 580.63 g / mol. The polypeptide is identified from undaria pinnatifida through a high performance liquid chromatography technology for the first time, and an unreported oligopeptide capable of inhibiting tyrosinase and cooperating with vitamin C to synergistically inhibit tyrosinase is screened out. The oligopeptide derived from undaria pinnatifida is synthesized by a solid phase method, has the characteristics of safety, no toxicity, good water solubility and good stability, and is combined with vitamin C to generate a synergistic effect and synergistically increase the inhibition effect on tyrosinase, so that the oligopeptide can achieve a better tyrosinase inhibition effect at a lower and more stable concentration; the use concentration of the oligopeptide can be greatly reduced, the stability is enhanced, and the oligopeptide can be widely applied to preparation of cosmetics, medicines, health-care products or food additives, and has important economic value and social significance.

The invention relates to an anti-hair loss and hair growth peptide with alternately arranged D / L amino acids as well as a preparation method and application of the anti-hair loss and hair growth peptide, and belongs to the technical field of biological medicines. The amino acid sequence of the polypeptide is shown as SEQ ID NO: 1, D-type and L-type amino acids are alternately arranged and designed, the protease degradation resistance is remarkably enhanced, the in-vitro half-life period is larger than or equal to 48 hours, and beta-catenin protein expression in hair follicle stem cells is activated. The preparation method comprises the following steps: taking Rink Amide resin as a carrier, sequentially coupling D / L type amino acid by adopting an Fmoc solid-phase synthesis method, cracking the resin by trifluoroacetic acid, and purifying by high performance liquid chromatography, so that the yield is more than or equal to 80%, the purity is more than or equal to 96%, and the molecular weight is confirmed to be 956.12 Da by mass spectrometry. The polypeptide can be applied to preparation of anti-hair loss and hair growth cosmetics, medicines and medical instruments, and effectively solves the problems of low stability and insufficient targeting of the polypeptide in the prior art. # imgabs0 #

The invention relates to a preparation method of high-purity o-phenylphenoxyethanol. The preparation method comprises the following steps: S1, reacting o-phenylphenol with ethylene carbonate in the presence of a catalyst to obtain an o-phenylphenoxyethanol crude product; s2, dissolving the o-phenyl phenoxyethanol crude product in an organic solvent; and S3, adding an anti-solvent, cooling and crystallizing to obtain the o-phenylphenoxyethanol. The o-phenylphenoxyethanol obtained by the method is high in purity, namely the HPLC (high performance liquid chromatography) purity is more than or equal to 99.5%, the single impurity is less than or equal to 0.1%, the o-phenylphenoxyethanol can be produced by conventional equipment, the process operation is simple, the production cost is low, an ethylene oxide method can be replaced, and the industrial production is easy.

The invention provides a SmbHLH130 gene and an application of the SmbHLH130 gene in increasing the content of tanshinone and salvianolic acid in salvia miltiorrhiza. According to the invention, a transcription factor SmbHLH130 is obtained through multi-omics data analysis in the early stage. A CRISPR-Cas9 (clustered regularly interspaced short palindromic repeats-associated 9) technology is utilized, a SmbHLH130 gene editing carrier is constructed, mutant hairy roots of gene knockout SmbHLH130 are obtained through agrobacterium tumefaciens transformation mediated by agrobacterium rhizogenes ATCC15834, and whether knockout of the mutant hairy roots is successful or not is identified through sequencing. And determining the content of tanshinone and salvianolic acid in the hairy roots of the transgenic salvia miltiorrhiza by using a high performance liquid chromatography (HPLC). The tanshinone content and the salvianolic acid content of the obtained gene knockout hairy roots are remarkably improved. Real-time fluorescent quantitative PCR (RT-qPCR) analysis shows that the expression quantity of a key enzyme gene participating in the biosynthesis of the active component of the salvia miltiorrhiza is also remarkably increased. The invention provides a method for increasing tanshinone and salvianolic acid contents of hairy roots of salvia miltiorrhiza, which can provide a new thought and target gene for production of active components of salvia miltiorrhiza and molecular design and breeding of salvia miltiorrhiza, and has higher application value and research value.

The present application provides a method for preparing a liquid composition containing Compound I, which comprises a step of purifying a crude product containing Compound I by high performance liquid chromatography, and its use in myocardial perfusion PET imaging, wherein the mobile phase used in the purification step by high performance liquid chromatography contains ethanol and water. By optimizing the process parameters and process flow, it can be applied to large-scale batch activity production and meet the needs of automation. The resulting myocardial perfusion PET contrast agent has high radiochemical purity, high activity concentration, good product stability, and high and stable yield or output.

The invention relates to a method for detecting the encapsulation efficiency of an injection of a cytomegalovirus inhibitor. Comprising the following steps: mixing an injection of the cytomegalovirus inhibitor with diethyl ether according to a certain volume ratio, carrying out extraction separation, and carrying out quantitative analysis by using high performance liquid chromatography after separation. The detection method is simple and rapid, and can ensure the accuracy of the detection result of the encapsulation efficiency without using a complex instrument and almost without damaging the structure of the inclusion compound. Meanwhile, the method meets the requirements of accuracy and repeatability.

The invention belongs to the technical field of pharmaceutical analysis. The invention provides a quality detection method of infantile pharyngeal flat granules, which comprises the following steps: sequentially extracting and filtering an infantile pharyngeal flat granule sample and an organic solvent, evaporating the filtrate to dryness, dissolving residues by using the organic solvent, and filtering to obtain an infantile pharyngeal flat granule sample solution to be detected; and measuring by adopting a high performance liquid chromatography, and calculating according to a standard curve model to obtain the contents of the nine active components in a sample solution of the child pharyngeal flat granules to be measured. According to the quality detection method of the infantile pharyngeal flat granules, the overall quality of the infantile pharyngeal flat granules can be more comprehensively evaluated and controlled, and the curative effect of the product is ensured; the content of nine active ingredients in the infantile pharyngeal flat granules can be rapidly determined, and the durability is good. Moreover, methodology verifies that the detection method is strong in specificity, has good precision, repeatability, stability, linear relation and accuracy, is simple and convenient to operate, and saves cost.

The invention belongs to the technical field of quality control of traditional Chinese medicines, and particularly relates to a method for establishing a fingerprint spectrum of kidney-tonifying and anti-aging tablets. The establishment method of the fingerprint spectrum of the kidney-tonifying anti-aging tablet comprises the following steps: mixing the kidney-tonifying anti-aging tablet and a methanol aqueous solution, and carrying out ultrasonic treatment to obtain a test solution; reference substances in the mixed reference substance solution comprise ferulic acid, hyperoside, quercitrin, hesperidin, rosmarinic acid and salvianolic acid B; and respectively carrying out UHPLC detection on the test solution and the mixed reference substance solution, and introducing obtained chromatograms into fingerprint spectrum software for processing to obtain the fingerprint spectrum of the kidney-tonifying and anti-aging tablets. The pretreatment method is simple, and the characteristic components of the kidney-tonifying and anti-aging tablet are completely reserved; the ultra-high performance liquid chromatography is adopted, so that the precision is high, the reproducibility is good, and the stability is good; according to the fingerprint spectrum obtained by the invention, 15 common peaks are determined, so that the overall characteristics of the kidney-tonifying and anti-aging tablet can be reflected, and the quality of the kidney-tonifying and anti-aging tablet can be effectively monitored.

The invention provides a chicken deterioration marker screening and AICAR prediction method and system based on multi-task learning and transfer learning. The method comprises the following steps: selecting chicken samples with different storage conditions and shelf lives, collecting metabolite data of multiple batches, and carrying out quantitative analysis on the metabolite by utilizing high performance liquid chromatography (HPLC), gas chromatography-mass spectrometry (GC-MS), liquid chromatography-mass spectrometry (LC-MS) and other technologies. Through the multi-task learning model, multiple differential metabolites are deeply mined, and the prediction precision and the calculation efficiency are improved. And providing chicken storage period optimization suggestions according to the AICAR predicted value. The innovative method and system can significantly improve scientificity and accuracy of chicken quality evaluation, have wide application prospects, and are especially suitable for the fields of food quality monitoring, supply chain management and intelligent storage and transportation.

The invention discloses an industrial lighting method based on an HPLC broadband power line carrier, and the method comprises the following steps: S1, obtaining all scene information of a factory production line, the scene information comprising lighting demands corresponding to different processes and different time periods of the production line; s2, formulating an illumination strategy according to a corresponding illumination demand, and storing the illumination strategy in the control platform; s3, acquiring data information in the scene through an acquisition module, transmitting the data information to a control platform through an HPLC (High Performance Liquid Chromatography) broadband power line carrier communication module, analyzing the data information through the control platform, calling a proper lighting strategy, sending a corresponding instruction through the PLC broadband power line carrier communication module, and lighting the current scene; in conclusion, the defects in the prior art are overcome, remote control, debugging and maintenance of the lighting equipment can be achieved through the HPLC broadband power line carrier technology, the flexibility and response speed of the lighting system are greatly improved, and the high social use value and application prospects are achieved.

The invention belongs to the technical field of tea leaf component detection methods, and particularly relates to a method for simultaneously detecting 4 alkaloids and 10 catechin components in tea leaves, which utilizes high performance liquid chromatography to simultaneously detect 4 alkaloids and 10 catechin components in tea leaf samples. And obtaining the contents of the 14 characteristic components in the tea sample according to the respective standard curves of the four alkaloids and the 10 catechin components. According to the detection method provided by the invention, 14 compounds in the tea leaves can be simultaneously detected and separated, and the problem that the separation effect is poor when multiple compounds in the tea leaves are simultaneously analyzed in the prior art is solved, so that the high-standard requirement of tea leaf component analysis is met; a more efficient, accurate and reliable analysis tool is provided for tea manufacturers, detection mechanisms and scientific researchers, and powerful support is provided for the fields of tea quality control, scientific research, deep processing and the like.

The invention provides a quality control method for synthesizing 3 '-sialic acid lactose by an enzymatic process, which comprises the following steps: A) dissolving and extracting a test sample by using a solvent to obtain a to-be-detected solution; the test sample is a reaction solution or a finished product of 3 '-sialic acid lactose synthesized by enzyme catalysis; b) determining the liquid to be detected by adopting a high performance liquid chromatography to obtain an HPLC (High Performance Liquid Chromatography) spectrum of the 3 '-sialic acid lactose; according to the method, an HPLC-UV-RI combined detection method is adopted, the specificity is high, the sensitivity is high, the linear correlation is good, and the pretreatment process of the sample is simple and rapid; according to the method, the content of 3 '-lactulose sialylate, 6'-lactose sialylate sodium salt, D-lactose, CMP, CMP-SA and SA in the 3 '-SL process development process can be accurately detected, control over the conversion rate and impurities in the process is facilitated, effective detection of a product 3'-SL related substance-isomer can be achieved, and control over the product quality is facilitated.

The invention relates to a method for detecting light liquid paraffin residue in a soft capsule dosage form, which adopts high performance liquid chromatography based on an evaporative light-scattering detector for detection, and comprises the following steps: (1) setting conditions of the high performance liquid chromatography; (2) dissolving an n-octadecane reference substance in dichloromethane to prepare n-octadecane reference substance linear solutions with different gradient concentrations between 28g / mL and 210g / mL, drawing detection results of the high performance liquid chromatography into a standard curve, and fitting to obtain the standard curve; (3) taking the solution in a plurality of soft capsules, putting the solution in a measuring flask, adding dichloromethane for dissolving, and filtering with a 0.22 m filter membrane for later use; and (4) sampling the test solution, then sampling the n-octadecane reference substance solution, comparing the logarithm values of the chromatogram peak areas of the test solution and the reference substance solution, and calculating the concentration of n-octadecane in the sample by an external standard method, thereby obtaining the residual concentration of light liquid paraffin.

The invention discloses establishment and application of a white kidney bean HPLC (High Performance Liquid Chromatography) fingerprint spectrum. The HPLC fingerprint spectrum of 114 batches of white kidney bean methanol extracts from different geographical sources is established, 9 common peaks are identified, and the spectrum-effect relationship between the 9 characteristic peaks of the HPLC fingerprint spectrum and the alpha-amylase inhibition rate is established through grey correlation analysis and partial least squares regression analysis. The invention finds that the myricetin component is highly correlated with the activity index of the alpha-amylase inhibitor and is possibly a key component of the hypoglycemic activity of the white kidney beans, and provides methodological reference for evaluating the hypoglycemic activity and quality control of the white kidney beans and also provides reference for development and utilization of the white kidney beans.

The invention discloses a method for extracting ecdysterone from cyanotis arachnoidea by using a deep-eutectic solvent, and belongs to the technical field of ecdysterone extraction. The method comprises the following steps: mixing a deep-eutectic solvent which takes choline chloride and a hydrogen bond donor material as raw materials with water, extracting ecdysterone in roots and stems of Cyanotis arachnoidea to obtain an ecdysterone crude extract, precipitating the ecdysterone crude extract by adding water, filtering, and adsorbing ecdysterone by using macroporous resin. Adding water for elution to obtain a deep-eutectic solvent-water mixed solution, and recovering under reduced pressure to obtain an extraction solvent for cyclic utilization; and eluting by using alcohol with different concentrations to obtain an ecdysterone crude extract, and purifying the crude extract to obtain high-purity ecdysterone. Compared with a conventional extraction method, the process method adopted by the invention has the advantages that the process is simple, efficient, green and environment-friendly, the used eutectic solvent can be recycled, the loss caused by heating volatilization in the extraction process is avoided, the ecdysterone extracted by the method is pure white, the content of ecdysterone can reach 90% or above after simple purification, and the method is suitable for industrial production. After re-purification, the purity of ecdysterone detected by high performance liquid chromatography is up to 98% or above.

The invention discloses an efficient HPLC dual-mode communication method and system, and relates to the technical field of communication analysis, and the method comprises the steps: obtaining service request data and channel state data in a dual-mode network; performing service priority classification based on the service request data so as to obtain service priority data, and performing channel quality evaluation based on the channel state data so as to obtain channel quality data; performing service and channel dynamic matching analysis according to the service priority data and the channel quality data to obtain dynamic matching strategy data, and performing scheduling queue optimization based on the dynamic matching strategy data to obtain optimized scheduling queue data; and performing a dual-mode channel switching decision according to the optimized scheduling queue data, generating channel switching decision data, performing service data transmission control through the channel switching decision data, obtaining service data transmission control data, and further realizing dual-mode communication according to the service data transmission control data. The dual-mode communication method has the effect of improving the dual-mode communication efficiency.