121results about How to "Easy to analyze results" patented technology

An apparatus and method analyzes a metabolic profile in a biological sample. The apparatus includes an input unit for inputting the drugs and/or metabolites to be screened; a controlling unit for determining a parameter set for metabolites preparation and for mass spectrometry analysis depending on the input of the kind of metabolites to be screened; a treatment unit for preparing the metabolites to be screened depending on the determined parameter set; a mass spectrometer for performing mass spectrometry analysis on prepared metabolites depending on the parameter set; a database for storing results of analyzing and parameter sets for metabolite preparation and for mass spectrometry analyses; and an evaluation unit for evaluating the results of mass spectrometry by use of reference results stored in the database to output an analysis of the metabolites profile.

The invention relates to a text classification method of a Chinese web page based on steam clustering, belonging to the technical field of internetwork data mining. The text classification method comprises the following steps of: acquiring a web page in real time; removing unprocessed labels in the format of the web page, and analyzing the characteristic information of texts of the web page; segmenting the content of the texts, using as ngram participles, and forming a plurality of word strings; computing the weight value of each word string; extracting the word string with a high weight value, and using the word string with the high weight value and the corresponding weight value thereof as characteristic vectors; computing the similarity of the characteristic vectors and characteristic information and a known class; computing obtained total similarity, and classifying the texts to the know class or establishing a new class; judging whether the know class is divided into two subclasses or not according to the number of characteristic items of the known class; and storing processed text records and the information of the known class. The text classification method sufficiently excavates the effective information of web page texts aiming at the characteristics of the web page texts and is incremental, fast, effective and more practical.

The invention provides a resonant type Fabry-Perot optical fiber sensor which comprises a sensor body and a through hole penetrating through the sensor body. One end of the through hole is provided with a graphene thin film for sensing the to-be-detected air pressure in an attached mode, and the other end of the through hole is provided with transmission optical fibers which penetrate through the through hole and are matched with the through hole. According to the resonant type Fabry-Perot optical fiber sensor, the air pressure of gas is calculated in the mode that graphene thin film resonant frequency changes are caused by damp of the gas to the graphene thin film, so that a closed Fabry-Perot cavity is not needed, and the manufacturing difficulty is reduced; the the original measurement thin film deformation quantity is replaced by resonance to further conduct air pressure measurement, and thin film material creeping caused by repeated film deformation is effectively reduced; digital frequency signals after probe laser detection are output after the sensor conducts detection, and result analysis can be conveniently carried out compared with light wave signals of an interferometric sensor. Stimulation and detection are carried out through the single transmission optical fibers, and long-distance air pressure measurement can be achieved, and the applicability of the sensor is greatly improved.

An ophthalmic analysis apparatus is the ophthalmic analysis apparatus for obtaining analysis results of tomography images of a subject eye acquired at different dates by ophthalmic optical coherence tomography and outputting statistical information formed based on time-series data of the analysis results, and includes instruction receiving means for receiving selection instructions to select an analytical region on a subject eye from an examiner, and control means for respectively acquiring analysis results in the analytical region selected by the instruction receiving means with respect to tomography images acquired at the different dates and outputting the statistical information.

A failure-effect validation system includes an effects modeler configured to develop a cumulative effects model for failure modes of the complex system, and by which a model of the complex system is extendible to form an extended complex-system model. The effects modeler is also configured to develop search targets each of which includes logical expressions of notable hazards and other factors that contribute to the cumulative effects, such as crew workload, safety margin and/or physiological effects. A model analysis system is configured to perform an automated analysis using the extended complex-system model and search targets, and in which the automated analysis includes a graph search of possible states of the extended complex-system model to locate search targets. And the effects assessment system is configured to selectively generate a layout of failure analysis data including at least a portion of the extended complex-system model and results of the automated analysis.

The invention relates to the field of molecular biology and provides Oligo dT primer, wherein Oligo dT primer is a single-stranded DNA molecule containing continuous dT sequences and recognition sites for cutting. The invention further provides a method for constructing a cDNA library on the basis of the Oligo dT primer. The Oligo dT primer is excellent in applicability, can be applied to various different library schemes, and can further accurately locate the initiation site of mRNA molecule in poly A tail. The method for constructing the cDNA library can ensure that all mRNA molecules in a sample can show specificity in the constructed cDNA library.

The invention relates to the technical field of indoor model test and particularly relates to an indoor test model for the frost heaving force of tunnels in cold regions and a testing method thereof. The indoor test model comprises a model box, a cold bath system and a data acquisition system used for acquiring monitoring data, wherein the model box is internally filled with a simulation surrounding rock which is internally provided with a simulation secondary lining; the cold bath system is arranged in the secondary lining; the data acquisition system comprises a plurality of sensors and a data acquisition box connected with the sensors; the model box comprises a framework structure and toughened glass arranged on a framework; in the simulation space of the framework structure, the simulation surrounding rock and the simulation secondary lining can be used for repeatedly testing for simulating different work conditions; due to the arrangement of the cold bath system, the environment temperatures of different actual work conditions can be simulated, and the data acquisition system is used for acquiring monitoring data, thus facilitating the analysis in later stage. According to the invention, the structure is accurate, the construction is convenient, and the distribution rules of the frost heaving forces in the tunnels in the cold regions under different work conditions can be measured, thus providing basis for the design of the tunnels in the cold regions.

Specialized telecom network users who burden the network, such as high-volume users of Internet services, are identified by analysis of network traffic data to identify addresses (e.g. telephone numbers) for callers to destinations associated with the particular call-in service. Destination telephone numbers may be identified from a list of known service providers or from a network traffic study, which identifies destination numbers receiving unique patterns of incoming traffic. Analysis of the records of calls to the destination numbers then identifies numbers for callers who made more than some minimum number of calls during the study or who accumulate more than some threshold amount of total connect time on such calls. The preferred embodiments utilize automated systems to compile and analyze call records from standard messages of a telephone network, such as interoffice signaling messages or automated accounting messages. Data from the records can be translated to identify the calling subscribers, e.g. by name and address or by point of connection to the network.

The invention relates to a nested quantitative PCR detection method for virus covalently closed circular DNA (ccc DNA) of hepatitis b virus. The particular detection steps are: 1) extraction DNA of hepatitis b virus; 2) design and synthesis primers and probe: design an internal and an external primer at conservative region of both sides of negative chain gap of HVB DNA, with Taqman fluorescence probe arranged at the lower part of the negative chain gap; 3) Plasmid-SafeTM ATP-Dependent DNase restriction enzyme purification; 4) nested real time quantitative PCR amplification, comprising: common PCR-template with external primer amplification purification and real time quantitative PCR-fluorescence quantitative amplification to common PCR production with internal primer and fluorescence probe. The invention can improve the specificity and sensitivity of detection reactive to make the operation process and result analysis much more accurate, simple and time saving.

The invention provides a solder paste printing performance influence factor analysis method based on SMT big data, and solves the problems of incomplete analysis and low precision in solder paste printing performance influence factor analysis. The method comprises the following implementation steps: collecting solder paste printing parameters and performance indexes to construct a solder paste printing data set; Processing the data by using a Mahalanobis distance and a null value; Calculating correlation coefficients among the features, and filtering redundant features; Dividing training and testing sample sets; Randomly extracting a part of features and constructing a random forest model; Setting a model termination condition; Estimating a characteristic importance degree score accordingto the model mean square error increment, and performing sorting; and determining a subset of key impact factors. According to the method, the key influence factors of the SMT solder paste printing performance are mined through random forest feature selection in combination with the big data processing technology, the correlation between the performance indexes and the printing parameters is determined, the solder paste printing performance is optimized, and the circuit board printing quality is improved. The method is used for process optimization and solder paste printing performance improvement in the surface mounting technology solder paste printing process.

The invention provides a tree CDN-P2P fusion network framework based on a grid structure and a method thereof, and belongs to the field of content delivery networks and the field of P2P (Peer to Peer) networks. The tree CDN-P2P fusion network framework based on the grid structure comprises a CDN server and Peer nodes on each layer, wherein the grid structure is formed between the Peer nodes on the upper layer and the Peer nodes on the lower layer under the precondition that a tree network topology is integrally maintained; the CDN server can provide the service capability of Nc, namely the concurrent connections of Nc strips; each Peer node needs k connections for service, and the k connections are respectively connected to k different Peer nodes to form the grid structure.

A diagnostic method and predictor of prognosis from various therapeutic treatments is provided using discriminant analysis statistics. In one form, a patient is identified as having a disease using discriminant analysis when one or more values of a physiological parameter of the patient is closer to that of a previously characterized group of individuals having a disease and the patient is diagnosed as not having the disease, or healthy, if the value of a patient's parameter is closer to that of individuals previously characterized as healthy, or not having the disease. For example, the parameters can be based on the autonomic and/or enteric nervous system. Advantageously, the present method can be readily adapted using conventional linear discriminant analysis statistics to factor more than one parameter between a patient and one or more previously classified groups, to thereby enhance predictability and reliability of the present method. Further, in another form, linear discriminant analysis is used to predict outcomes of various therapeutic treatments of a disease to which a patient is afflicted by comparing the value or values of one or more patient parameter with respective ones in previously characterized individuals having the same affliction which have been treated either successfully or unsuccessfully.

An analysis method for chemical and/or biological samples, particularly chemical and/or biological samples comprising cells, includes the following steps:

• taking a sample image (46), said sample image (46) comprising a plurality of pixels,
• generating analysis data per pixel,
• determining pixels of interest for the analysis, and
• evaluating the generated analysis data per pixel of interest, preferably by a fluctuation analysis procedure,

and is characterized in that said analysis data are generated during said taking of the sample image and comprise pixel information resolved into time series, said pixel information being used for evaluation preferably on the basis of a fluctuation analysis procedure.

In this invention, a current-source sine wave voltage driving circuit via voltage-clamping and soft-switching techniques, also known as an inverter, is applied mainly to the fuel cell, solar energy, battery and un-interruptible power systems for inverting DC voltage into utility AC voltage. A controllable current source having high frequency switching capability is used for supplying output capacitors and loads with an output sine wave voltage. The current source uses the voltage-clamping technique and quasi-resonant property to control the inductance current in discontinuous conduction mode so that all loads have soft-switching characteristics and more-than-95% maximum conversion efficiency. Meanwhile, the voltage-clamping technique can reduce voltage specification requirement to be sustained by the switch devices. The value and volume of inductors in the current source are smaller than those in a conventional current-source mechanism, so it can adjust the inductive current promptly to satisfy the requirement of the loads.

The invention relates to a method for extracting bearing fault feature frequency based on singular value decomposition and optimized frequency band entropy and the application thereof, and belongs tothe field of mechanical fault diagnosis and signal processing. The concept of the singularity kurtosis value relative change rate is provided based on kurtosis indexes, and the SVD reconstruction order is determined by adopting a singular kurtosis value relative change rate. The method is simple in principle and takes kurtosis value as a theoretical basis and has a solid theoretical basis when compared with other methods. The denoising effect can be better than that of other methods. After the SVD reconstruction order is determined, a reconstructed signal is obtained, and an optimized band-pass filter is designed by utilizing the optimized frequency band entropy, further noise reduction processing is carried out on the reconstructed signals, and an analysis result is good in effect. According to the method, the bearing fault feature frequency can be effectively extracted. The method is applied to bearing simulation signals and actual bearing signal analysis, and has wide practicability.

The invention provides a lane keeping assistant system security analysis method based on system theory hazard analysis, and belongs to the field of unmanned technique security engineering. The lane keeping assistant system security analysis method comprises the steps of (1) establishing a layering control structure of a lane keeping assistant system, and (2) based on the layering control structure, recognizing insecure control behaviors, and obtaining final security constraints that SC1, if a correct steering indicator is started, that is to say, the deviation direction is the same as the direction of the steering indicator, the lane keeping assistant system is not allowed to take a correction measure; SC2, if lane switching for a vehicle is conducted on the condition that the steering indicator is not correctly utilized, the lane keeping assistant system needs to give a warning to a driver and provide the correction measure; SC3, if the driver does not respond to a warning sign and continues to drive the vehicle out of a lane, the lane keeping assistant system needs to provide the correction measure. Compared with an existing security analysis method, the fault coverage area is wider, analysis is more comprehensive, and a better analysis effect is achieved with regard to modern complicated security demanding systems.

The invention relates to a buffer system for polyacrylamide precast gel for electrophoresis, and belongs to the technical field of gel electrophoresis. The buffer system comprises anode electrophoresis tank buffer solution, cathode electrophoresis tank buffer solution, separating gel and concentrated gel and is characterized in that: the concentrated gel and the separating gel comprises 100 to 300mmol/L of trihydroxymethyl aminomethane and 1 to 4g/L of lauryl sodium sulfate and is titrated by using nitric acid to adjust the pH value to be between 6.5 and 6.9; and the anode electrophoresis tank buffer solution and the cathode electrophoresis tank buffer solution comprise 80 to 120mmol/L of trihydroxymethyl aminomethane-N-(2-hydroxyethyl) piperazine-N'-2-ethane sulfonic acid and 1 to 4g/L of lauryl sodium sulfate and the pH value is adjusted to be between 7.5 and 8. The system has the advantages of enhancing the stability of a gel matrix and the buffer solution, not reducing the performance of the gel matrix and the buffer solution when the gel matrix and the buffer solution are stored in a refrigerator for more than one year and improving the analysis result of Western blot.

The invention belongs to an alloy macro element analysis technology, and relates to an analysis method for measuring a gallium element in zinc oxide powder. According to the analysis method disclosed by the invention, the zinc oxide powder is dissolved by diluted hydrochloric acid, and the hydrochloric acid-insoluble part of a test sample is completely dissolved by nitric acid. By carrying out an interference experiment, an optimal analysis spectral line is determined, and the accuracy of measurement is improved; the method is wide in measurement range; by synchronously treating the test sample and preparing a high-standard solution and a low-standard solution for measuring the gallium element, the analysis error is the minimum and the method is good in repeatability; low-content gallium element analysis can obtain a good analysis result by direct measurement; by an internal-standard element measurement method, high-content element analysis can be carried out well, the relative standard deviation is low, and the recovery rate and accuracy are high; standard sample analysis, method re-inspection and comparison of the result with analysis results of other units indicate that the formulated analysis method is good in accuracy, stable, and capable of completely meeting the requirements of trace and macro analysis.

The invention provides a high-performance three-dimensional sound field calculation system and method. The high-performance three-dimensional sound field calculation system is designed and developed in the form of service and components, wherein the function of each part is relatively independent, so as to form a structure for loose coupling. The high-performance three-dimensional sound field calculation system is characterized in that the high-performance three-dimensional sound field calculation system comprises two main work services and three auxiliary modules, wherein the two main work services are an operation monitoring and communication scheduling service and a three-dimensional sound field model data preprocessing and parallel computing service, and the three auxiliary modules area mapping type file data high-speed analysis module, a computing model state monitoring and control module and a global marine environment database interaction module.

The invention relates to a method for performing parent ion scanning analysis by utilizing time multi-stage mass spectrometry. The method comprises the following steps: (1) feeding samples by employing a syringe or a peristaltic pump, so that tested samples continuously enter a mass spectrum ion source; (2) selecting a daughter ion and a proper cracking energy; (3) setting an initial mass number, a final mass number and a stepping distance of parent ions in time multi-stage mass spectrometry; starting from the initial mass number, taking a certain mass number stepped each time as the stepping distance and stopping till the final number, continuously and selectively cracking parent ions entering a mass spectrometer, and recording information of the parent ions which can generate the daughter ion in the step (2); and (4) verifying the parent ions obtained in the step (3) by employing liquid chromatography tandem mass spectrometry. According to the method, parent ion scanning is realized in the time multi-stage mass spectrometry, so that the problem that the parent ion scanning is difficultly realized because only a detector exists in the time multi-stage mass spectrometry in the prior art is solved, and a false positive result is effectively eliminated.

The invention relates to a stable type ocean bionic robot detection device which comprises two groups of detectors, wherein the detectors are designed side by side; the detectors comprise main bodies; lifting airbags are arranged on front and rear sides below the main bodies; gliding wines are arranged on two sides of the main bodies; connecting bases are arranged at the upper parts of the main bodies; the connecting bases on the two main bodies are connected through a connecting rod; water quality detectors and sampling devices are arranged below the main bodies; storage batteries, controllers and air pressures systems which are connected with one another are arranged inside the main bodies; the water quality detectors, the sampling devices and the lifting airbags are connected with the controllers. The invention aims to provide the stable type ocean bionic robot detection device, two detectors are connected into one detection device through the connecting rod; furthermore, the stability can be improved, and lateral turnover can be prevented; moreover, if a detection component on one detector has faults, detection can be implemented through a same component of the other detector, so that the continuous detection property can be improved, and furthermore as a sample of a same area can be taken twice, the detection accuracy can be improved.

An automatic cleaning assembly for an analytical furnace is detachable from the filter chamber above the combustion tube. The cleaning assembly includes a rotating brush which is lowered through the filter chamber and into the combustion tube while a vacuum is drawn through the lower seal of the combustion tube. This results in a higher vacuum pressure differential and improved flow rate for removing dust from the filter of the furnace and the combustion tube.