204results about How to "Easy for quantitative analysis" patented technology

A system and method for browsing, retrieving, and recommending information from a collection uses multi-modal features of the documents in the collection, as well as an analysis of users' prior browsing and retrieval behavior. The system and method are premised on various disclosed methods for quantitatively representing documents in a document collection as vectors in multi-dimensional vector spaces, quantitatively determining similarity between documents, and clustering documents according to those similarities. The system and method also rely on methods for quantitatively representing users in a user population, quantitatively determining similarity between users, clustering users according to those similarities, and visually representing clusters of users by analogy to clusters of documents.

A system and method for browsing, retrieving, and recommending information from a collection uses multi-modal features of the documents in the collection, as well as an analysis of users' prior browsing and retrieval behavior. The system and method are premised on various disclosed methods for quantitatively representing documents in a document collection as vectors in multi-dimensional vector spaces, quantitatively determining similarity between documents, and clustering documents according to those similarities. The system and method also rely on methods for quantitatively representing users in a user population, quantitatively determining similarity between users, clustering users according to those similarities, and visually representing clusters of users by analogy to clusters of documents.

A method of and apparatus for improving the resolution of compounds eluted from a separation device are disclosed, particularly suited for use in the fields of gas or liquid chromatography. Embodiments of the invention provide that spectroscopic data are measured from an effluent eluted from a chromatography device as a function of elution time; peaks in intensity are identified to form a first set of identified peaks; peaks not due to an eluting compound are discarded from the first set of identified peaks thereby forming a second set of identified peaks from those retained; each peak in the second set of peaks is transformed into a first model peak centered on the elution time of each peak in the second set of peaks; some or all the model peaks created are added together to create a new chromatogram; and all identified peaks in intensity in the second set of peaks having elution times within a given time period of identified peaks in intensity in the new chromatogram are grouped together and assigned to a single eluted compound thereby forming a processed data set.

The invention discloses an optical detection device for corona discharge. An atmospheric ultraviolet window band imaging detection optical path thereof comprises a stray light shield, an atmospheric ultraviolet window band ultraviolet lens, an atmospheric ultraviolet window band band-pass ultraviolet filter, an ultraviolet image intensifier, a light cone, a CCD or CMOS area array image sensor, an image processing circuit and a first liquid crystal display which are arranged in sequence. A solar blind ultraviolet band non-imaging detection optical path thereof comprises a total emission mirror, a spectroscope, a solar blind ultraviolet band-pass filter, a solar blind ultraviolet lens, a multiplier phototube, a signal processing circuit module and a second liquid crystal display. The device has the main advantages that the corona detection data is more complete and reliable, and the failure level of corona discharge and discharge degree are convenient to be analyzed.

Disclosed is an imaging system and method for the non-pure positron emission tomography (NPET). The NPET comprises a PET subsystem to detect the annihilated photons, and a SPECT subsystem to detect the associated gamma. These two subsystems are connected by a triple coincidence circuit. The source position can be determined through detection of the three photons using the triple coincidence circuit. As long as these three photons are simultaneously detected and their energies are right, the source position is directly calculated and located on the intersection of an associated line and an annihilated line. The present invention provides good temporal resolution and quantitative analysis. It immunes to scatter and random events and achieves a high signal-to-noise ratio. Real imaging is also possible in the NPET system.

The invention discloses a method for observing obstruction of microbial groundwater seepage and blockage as well as a device thereof. The method comprises the followings steps: (1) adding a porous medium to an experiment box; (2) regulating water level of an upstream control water tank to stabilize the water flow, constantly illuminating with a light source, and recording light rays from the box; (3) recording the water level and nutritive substances of the control water tank by a digital camera and storing the images; (4) quantitatively analyzing microbial aggregation density and porous medium density, obtaining a sample containing microbe aqueous solution and the porous medium from a sampling valve of the experiment box; and (5) killing microbes by the ultraviolet ray; wherein, the experiment box is equipped with a valve, a filter screen and a water storage tank which is connected with a water pump, the water pump is connected with the control water tank, and a water inlet tube is connected with the experiment box. The method helps directly observe and record the propagation and migration of the microbes in the porous medium, the blockage manner and change of a water flow passage, obtains the observation data, facilitates the control of the microbial activity and sampling analysis, and is applicable to simulation research of the microbial seepage and obstruction problem in a groundwater source heat pump system.

The invention provides a surface enhanced Raman scattering (SERS) substrate and a preparation method thereof. The SERS substrate comprises a silicon substrate and a chemical modification layer arranged on the silicon substrate. The chemical modification layer includes a hydrophilic silane compound layer with area smaller than 7.5 square millimeter; a hydrophobic silane compound layer surrounding the hydrophilic silane compound layer; and a mono-layer metal nanoparticle layer arranged on the hydrophilic silane compound layer. Under action of the hydrophilic silane compound layer and the hydrophobic silane compound layer, aqueous solution of to-be-detected substance is concentrated on the middle small-area hydrophilic silane compound layer, to improve concentration degree of aqueous solution of the to-be-detected substance. The metal nanoparticle layer realizes more uniform distribution of aqueous solution of the to-be-detected substance. Therefore, the SERS substrate can improve signal intensity and detection sensitivity.

The invention discloses an interference-removing dry chemical quantitative test strip. The strip comprises a bottom liner, wherein the bottom liner is provided with a sample addition region and also a starting region; the sample addition region is fixed with interference-removing reagents and signal providing reagents; the starting region is fixed with test reaction starting reagents; and the sample addition region and the starting region are arranged on the test strip in a mode of maintaining a non-contact under a normal state and mutually contacting under a test state. The test method comprises the following steps of: adding a sample solution to be tested into the sample addition region, re-dissolving materials fixed on the sample addition region into the sample solution to be tested, and starting to perform a signal reaction to obtain a background signal value; and then enabling the starting region to contact with the sample addition region, re-dissolving materials fixed on the starting region, starting a test reaction, performing a second-time signal reaction on a product again, and estimating out a content of a biological enzyme to be tested according to a tested second-time characteristic value and the background signal value. The test method provided by the invention has the advantages of convenience for operation, low test cost, accurate test result and high test precision and can specifically be used in the alanine and aspartate aminotransferase quantitative test.

The method includes following steps: a) the testing front stage uses preset reference sound file to generate sound data; the sound data is sent to mobile terminal, and is fed back to the testing front stage from mobile terminal via loop back; b) the testing front stage makes separation and extraction for the received feedback sound data to form degrading sound data file; c) with the reference sound file and the degrading sound file, estimation and calculation is made for the sound quality to acquire the quality of sound loaded by tested system. The invention also discloses a device for testing sound quality consists of operating unit, front and back stage communication unit, data generating unit, sendreceive control unit, reception extracting unit, and estimation and calculation unit.

The invention relates to a transmission capacity and wind and fire bundling transmission optimization method, and in particular relates to the transmission capacity and wind and fire bundling transmission optimization method. The invention firstly establishes an index system considering receiving end power grid electricity power demand, static security index, transient stability index, economic index and power transmission electrovalence. The indexes are quantized for establishing mathematical model of multi-objective functions and the multi-objective optimization algorithm is adopted for computing. During the solving process, multi-objective functions are solved simultaneously and computed for obtaining alternative solution meeting constraint condition, and the entropy function method is adopted for confirming the optimal compromise solution. The index system considering receiving end power grid electricity power demand, static security index, transient stability index, economic index and power transmission electrovalence is adopted, the evaluation index is convenient to compute and analyze in a quantitative manner, the transmission capacity of the electric transmission line and the influence to the receiving end power grid from sending end wind and fire bundling ratio can be reflected synthetically.

A phase current estimation apparatus for a motor capable of suitably improving estimation accuracy of phase currents is provided. The phase current estimation apparatus 10 of the motor includes a control unit 24 that decomposes a command voltage vector Vdq into two vector components V′dq in the case where a magnitude of the command voltage vector Vdq is less than a predetermined lower limit voltage Vlow, so that the command voltage vector Vdq is allowed to have the magnitude equal to or more than the predetermined lower limit voltage Vlow for every two adjacent periods in units of a period of a carrier signal and to have the phase outside a predetermined phase range including phases of reference voltage vectors. Accordingly, the control unit 24 can quantitatively analyze harmonic components, which are generated by decomposing the command voltage vector Vdq into the two vector components V′dq, by using mathematical equations.

The invention relates to a laser desorption ionization mass spectra, in particular to application of diamond-like carbon film used as matrix in the laser desorption ionization mass spectra; the surface of the diamond-like carbon film is used as an assisting matrix of laser desorption ionization flying time mass spectra, the diamond-like carbon film has high desorption ionization efficiency to compounds with low molecular weight and can not generate background interference of matrix molecules, so as to realize high-efficiency and rapid detection to the compounds with low molecular weight; the laser desorption ionization flying time mass spectra which adopts the diamond-like carbon film as the assisting matrix is a new desorption ionization method without adding any organic matrix, so as toprovide a general, high-efficiency and rapid detection method for the compounds with low molecular weight such as natural products and ecological metabolites, promote the development of analysis of compounds with low molecular weight by the laser desorption ionization flying time mass spectra technology and find new field for the application of the diamond-like carbon film material.

The invention discloses a method for evaluating fatigue performances of viscoelastic components as rubber, plastic, and the like, which comprises testing energy lost changing rate in a given testing period, or testing the number of test periods when given energy lost changing quantity is reached, thereby bench fatigue testing service life of different products can be evaluated. Value of the energy lost changing rate has strong association with fatigue degrees of the products and is convenient for quantitative analysis and comparisons, the fatigue degrees of products inner structures can be reflected directly and actually, and damping buffering performances of the products can be defined accurately, which are used as measurement indexes for product quality control. The testing method is simple and has high accuracy, thereby testing time of fatigue service life tests can be shortened, testing cost can be saved, and the damping buffering performances of the products can be reflected thoroughly. The testing method is applicable to damping performance tests and evaluations of various viscoelastic products, and convenient to assess crosswise anti-fatigue performances between various products.

The invention discloses a method for preparing granulate and sheetlike fluorescence labeling microplastics. The method comprises the steps that plastics are mixed with dye; and after fluorescence labeling, tabletting, pulverization and dispersion are conducted on the plastics through an enclosed mixing process, filter sieving is conducted, so that the granulate and sheetlike fluorescence labeling microplastics within different granule size ranges are obtained. By means of the method, the fluorescent microplastics which exist in the environment generally and are in different shapes can be obtained conveniently and quickly; the distribution and enrichment rules of the microplastics in different shapes in environmental media and organism bodies can be analyzed in a qualitative and quantitative manner conveniently; and the method can be widely applied to ecological environment risk research of various microplastics.

The invention relates to a carbon emission monitoring management system and method. The system comprises an information management module which is used for the information communication and carbon emission data display among a plurality of users; The monitoring plan module which is used for issuing carbon emission plan data and receiving summarized data of the carbon emission monitoring information submitted by the enterprise; The login module which is used for receiving a login application of a user of each enterprise and entering an account system corresponding to the login application, wherein the carbon emission plan data and the summarized data of the carbon emission monitoring information are uploaded and downloaded through the account system; The data processing module which is usedfor generating carbon emission or carbon emission reduction behavior information according to the carbon emission plan data and the summary data of the carbon emission monitoring information to obtain corresponding carbon emission or carbon emission reduction data; And the data storage module which is used for storing the carbon emission or carbon emission reduction data into a corresponding account system so as to indicate an enterprise to carry out carbon emission monitoring management. The carbon emission monitoring function is expanded, and the carbon emission is effectively and quantitatively analyzed.

Provided herein are methods and devices to enrich trace quantities of impurities in gaseous mixtures, such as hydrogen fuel. The methods and devices rely on concentration of impurities so as to allow the detection of the impurities using commonly-available detection methods.

The invention discloses a thiosemicarbazone 7-umbelliferone-8-aldehyde probe reagent which is prepared by enabling 7-hydroxyl-8-aldehyde coumarin and thiosemicarbazone to react. By adopting a probe disclosed by the invention, selective recognition of metal ions and anion can be achieved simultaneously, specific ions can be rapidly detected through visual colorimetric, the probe can be also applied to specific ion imaging detection in living cells, has double-mode detection with fluorescence enhancement and proportioning absorption, is relatively excellent in detection sensitivity and accuracy, has the advantages of high sensitivity, high selectivity, high yield and the like, and moreover is beneficial to quantitative and qualitative analysis on complex micro systems.

The invention discloses an analysis method for combining chemical derivation with matrix auxiliary laser desorption ionization-time of flight mass-spectrometric technique (MALDI-TOF-MS). According to the method provided by the invention, polypeptide is adopted for deriving aldehyde and sulfydryl micromolecule metabolites, and after the to-be-detected micromolecule matter is derived, the MALDI-TOF-MS detection analysis is performed. After the micromolecule matter is subjected to polypeptide treatment, the simple single quasi-molecular ion peak [M+H]+ is acquired, so that the distinguishing degree of the micromolecule matter in a mass spectrum graph can be obviously improved and the detection sensitivity of the micromolecule matter in the mass spectrum is greatly increased. The method has the advantages of high sensitivity, strong universality, simple and convenient operation, no matrix interference and less sample loss; the sulfhydryl compound in ultralow content in a body fluid can be quantitatively detected, without preparation for a complex matrix and a deriving reagent; and the method has a huge application prospect in search on metabonomics.

The invention provides a preparation method of powder type graphene oxide. The preparation method includes the specific steps that graphite powder and sodium nitrate are added to concentrated sulfuric acid for low-temperature oxidation, potassium permanganate is added for further oxidation and intercalation under the intermediate temperature condition, finally the mixture reacts at high temperature, centrifugal washing is conducted, and the mixture is ground into the powder type graphene oxide after freeze drying. The prepared graphene oxide has the advantages that operation is easy, and a product is easy to weigh and convenient to store.

The invention belongs to the testing technological field and discloses a bearing dynamic friction torque tester. The bearing dynamic friction torque tester comprises a host, a controller, and a display; and the bearing dynamic friction torque tester is a bearing detection device. The bearing dynamic friction torque tester is driven by a precision spindle at a rate of 1r / min (or 0.5r / min or 10r / min) to drive a bearing under test to rotate at a low speed; under an actual preload condition, the dynamic torque of the bearing is detected by a dynamometer, and a test curve is displayed in real time;bearing quality information such as bearing tracks, steel ball surface smoothness, groove surface smoothness, cleanliness, lubrication states and friction torque mean values can be judged by means ofcontinuous torque curve analysis; and therefore, with the bearing dynamic friction torque tester adopted, the quality control of the bearing can be carried out, the improvement of the accuracy of a product and the prolonging of the service life of the product can be benefitted. The bearing dynamic friction torque tester can be a device used by a bearing user to carry out bearing screening and bearing quality inspection.

The invention relates to a complex task planning method and system, and relates to the field of task planning. The method comprises the following steps of: respectively establishing an intelligent agent model and a discrete event model of a complex task; obtaining demand data and resource constraint data of the complex task, and expressing the demand data and the resource constraint data through the intelligent agent model and the discrete event model; generating a task sequence according to the intelligent agent model and the discrete event model, wherein the task sequence comprises at leastone to-be-planned task; carrying out inverse simulative calculation according to the task sequence so as to obtain a feasible scheme and an assessed value thereof; and carrying out iterative optimal calculation according to the assessed value of the complex task. The complex task planning method and system provided by the invention are capable of realizing rapid planning of complex tasks, rapidlycalculating feasible solutions satisfying resource constraint conditions, and rapidly and flexibly changing the resource constraint conditions, and have the advantages of being strong in practicability.

The invention discloses a dry chemical quantitative test strip with interference removal, comprising a substrate, a sampling region which is provided with a fixed interference removing reagent and arranged on the substrate, and a promoter region which is provided with a fixed test reaction promoter and a fixed signal supplying reagent and is arranged on the substrate, wherein, the sampling region and the promoter region are distributed on the test strip under the conditions that: the sampling region keeps non-contact with the promoter region in normal state, and the sampling region contacts with the promoter region in test state. The test method comprises the following steps: adding a sample liquid to the tested in the sampling region, redissolving the substance fixed on the sampling region in the sample liquid to the tested, carrying out reaction for removing interference; then contacting the promoter region with the sampling region, redissolving the substance fixed on the promoter region, and carrying out reaction for test; carrying out signal reaction on the reaction product, and according to the tested signal value, calculating the content of biological enzyme to be tested. The test method has the advantages of simple operation, low test cost, accurate test result, and high test precision, and can be concretely applied for the quantitative test of alanine transaminase or aspartate transaminase.

The invention discloses a method for separating and purifying astaxanthin from antarctic krill shells. The method comprises the following steps of carrying out enzymolysis treatment on antarctic krill shells serving as raw materials through alcalase so as to obtain enzyme-hydrolyzed protein liquid, krill shell residues and pigment precipitates, extracting pigments from the krill shell residues and the pigment precipitates by respectively using acetone and ethanol, combining extracts, saponifying the combined extracts by using NaOH-ethanol so as to obtain saponified liquid, adsorbing free astaxanthin in the saponified liquid by using AB-8 macroporous resin, carrying out further separation and purification on the adsorbed free astaxanthin through a silica gel column, and carrying out freeze-drying so as to obtain high-purity astaxanthin powder. According to the method, the krill shells are processed by using the alcalase, so that the release of the astaxanthin is facilitated, and meanwhile, the protein is protected; and a method that macroporous adsorption resin and silica gel column chromatography are combined is adopted, so that the realization of large-batch production is facilitated.

The invention provides a node similarity-based Internet of Vehicles community discovery method. The method comprises the steps that a community model in a VANET scene is studied, and a node similarity-based VANET community discovery method is provided; and according to the connectivity between RSU nodes and VANET communities, RSU node community attachments are reasonably partitioned, and then thenode similarity-based RSU infrastructure-loaded Internet of Vehicles community discovery method is provided. The method can help to better qualitatively and quantitatively analyzing the network structure, the change law and the traffic distribution of the community and has the important significance for constructing a VANET data forwarding route strategy and an accessibility scheme.

The invention discloses a chromatographic overlapping peak decomposition method based on dual-tree complex wavelet transform; dual-tree complex wavelet transform is mainly adopted for decomposing chromatographic signals, and chromatographic overlapping peaks are separated by means of amplifying detail coefficients to reconstruct the signals. The method includes the steps of acquisition and preprocessing of the chromatographic signals, dual-tree complex wavelet decomposition and extraction of the detail coefficients, amplification of the detail coefficients, dual-tree complex wavelet reconstruction, and sidelobe suppression and reduction of spectra. Results show that the dual-tree complex wavelet transform effectively overcomes the disadvantages of poor aliasing resistance and translation sensitivity of traditional discrete wavelet transform, the effect of decomposition of the overlapping signals is better than that of a general real wavelet, and the accuracy of original spectrum peak characteristics and quantitative and qualitative analysis is ensured.

The invention discloses a micro-fluidic continuous sampling method and device for unicellular quantitative analysis. According to the method and the device, a micro-fluidic chip of which cross channels are added with auxiliary focusing channels is used as an operation platform and static pressure provided by samples or electrophoretic buffer solutions in a certain volume ratio in five wide liquid storage tanks at the tail ends of the chip channels and electric power provided by four program controlled direct current voltages are taken as fluid operation control means, thereby realizing parallel treatment of samples and regents in a plurality of microchannels in the micro-fluidic chip, Picoliter-scale injection volume control and continuous injection operation; particularly, the disclosed method and device can be used for realizing three operation steps in one unicellular sample injection to the micro-fluidic chip, wherein the three operation steps include cell sample loading, unicellular loading / capturing and unicellular membrane dissolving and electrophoretic separation; after one unicellular sample injection operation is finished, the three operation steps are repeated automatically and thus the continuous unicellular sample inject is realized.

The invention provides a system modeling method based on model system engineering and a hyper-network theory. The method comprises the following steps: step A, analyzing a modeling object; step b, establishing a system model group based on MBSE; and step C, converting the system model into a super-network model. According to the invention, the advantages of the MBSE and the multi-layer super network are combined so that a system model group is established in a standardized and complete manner by using MBSE, and a super-network model is formed on the basis, so that quantitative evaluation, statistical analysis, prediction reasoning and dynamic management of a system can be conveniently implemented by system architecture design and optimization personnel, and a good support is provided for improvement of system capability.

The invention provides a method for detecting volatile components in Artemisia argyl oil, and application thereof, and relates to the technical field of volatile component detection. The detection method is used for detecting the the volatile components in the Artemisia argyl oil through a gas chromatography-mass spectrometry detection technology. A spectrum library retrieval technology is used for carrying out retrieval qualitation on a chromatographic mass spectrogram in a full-scanning Scan mode to obtain qualitative data of all volatile components; and meanwhile, the peak area of the chromatographic mass spectrogram of the main volatile substances is analyzed in the SIM mode by using a segmented scanning technology, and the content of each main volatile substance is further calculatedby using an external standard method. The method has the characteristics of simplicity, accuracy, specificity and high practicability.