203results 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.

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 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.

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.

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 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 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 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 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 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.