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2008 results about "Standard samples" patented technology

Device for testing durability of water pressure resistant grouted rock

The invention discloses a device for testing the durability of a water pressure resistant grouted rock, which comprises a pressure chamber, a control cabinet, heating equipment, pressurizing equipment, measuring equipment and accessory equipment, wherein the heating equipment can supply a stable heat source for the pressure chamber; the pressurizing equipment can provide confining pressure and osmotic pressure for the pressure chamber; the pressure chamber can apply an axial pressure by means of a universal test, is corrosion resistant and can realize annular and vertical penetration tests of three kinds of standard samples of different dimensions at different temperatures and pressures; the measuring equipment can realize accurate measurement of temperature, pressure and flow rate; and the control cabinet can realize the accurate control of pressure and temperature. The device can be used for indoor researches on the durability of tunnel water pressure resistant grouted rock or dam impervious curtain in an environment of high-water-pressure and corrosive environment, and at the same time, realizes the researches on the change rule of the permeability of a rock sample under the coupled actions of a temperature field, a seepage field, a stress field and a chemical field.
Owner:TONGJI UNIV

Magnetic microparticle chemiluminescence enzyme immune analytic reagent kit for detecting saccharide antigen and its use method

InactiveCN101324579AQuantitative detection of carbohydrate antigen contentLow pre-processing requirementsMaterial analysisCarbohydrate antigenMicroparticle
The invention relates to a magnetic corpuscule chemiluminescent enzyme immunoassay kit for detecting carbohydrate antigen and the application method thereof. The kit comprises FITC antibody-coated magnetic corpuscules; a marker solution prepared by mixing the FITC-marked carbohydrate antigen monoclonal antibody and the enzyme-marked carbohydrate antigen monoclonal antibody; a carbohydrate antigen standard sample solution; a concentrated washing solution; and a luminescent substrate solution, wherein carbohydrate antigen optionally adopts one of CA72-4, CA50, CA19-9, CA242, CA15-3, CA27-29 and CA125. The enzyme-marked antibody and the FITC-marked antibody are the monoclonal antibodies corresponding to the antigens. The FITC antibody coating the magnetic corpuscules adopts a polyclonal antibody or a monoclonal antibody. The marker solution is prepared by mixing an FITC-marked capture antibody working solution and an enzyme-marked antibody pair working solution by the volume ratio of 1:(1-3). Compared with the known kit for mensurating the carbohydrate antigen, the kit has the advantages of high flux, high sensitivity, wide linear range, rapidness, etc., and has a wide application prospect for the clinical inspection, etc.
Owner:TSINGHUA UNIV

Audio mixing method and equipment thereof

ActiveCN102226944AMixing processing implementationImprove voice qualitySpeech analysisVocal tractSpeech sound
The invention discloses an audio mixing method and equipment thereof, so that a defect of a present server can be overcome, wherein the defect is that there is limitation of many conditions during audio mixing processing. The disclosed audio mixing method comprises the following steps that: a server receives and decodes voice coded data in the best fit sampling rate, channel amount and coding mode sent by at least two source clients, wherein formats of the decoded data are unified as a PCM format; the server determines whether the sampling rates and sound channels of the voice coded data transmitted by all source clients are in accord with standards; if not, the voice data of the source clients are sampled again according to a standard sample rate, wherein the sample rates of the voice data are different from the standard sample rate; and meanwhile, the voice data of the source clients are expanded or merged according to a standard sound channel, wherein the sound channels of the voice data are different from the standard sound channel; the voice data, which have a unified sample rate and a unified sound channel, are aligned according to a time stamp; and audio mixing processing is carried out on the aligned voice data, and then the processed voice data are sent to a lodge client. The disclosed method provide in the invention can be applied widely to a VOIP multi-people meeting.
Owner:GUIYANG LONGMASTER INFORMATION & TECHNOLOGY CO LTD

Nondestructive testing analytical method for kerogen based on terahertz time-domain spectroscopy

The invention relates to a nondestructive testing analytical method for kerogen based on terahertz time-domain spectroscopy. The method comprises the following steps of: firstly, selecting a sample cell; secondly, preparing a kerogen standard sample and accommodating the kerogen standard sample in the sample cell; thirdly, detecting the kerogen standard sample and the empty sample cell by using the terahertz time-domain spectroscopy to obtain a terahertz pulse time-domain waveform of the kerogen standard sample and a terahertz pulse time-domain waveform of the empty sample cell; fourthly, carrying out data processing on the terahertz pulse time-domain waveform of the kerogen standard sample and the terahertz pulse time-domain waveform of the empty sample cell to construct a standard fingerprint spectrum library; and fifthly, analyzing the thermal evolution and hydrocarbon generating capabilities of the kerogen standard sample according to optical parameters of the standard fingerprint spectrum library. The nondestructive testing analytical method for the kerogen based on the terahertz time-domain spectroscopy which is disclosed by the invention has the advantages of quick and nondestructive detection for the kerogen, easiness in operation, simpleness in data processing, favorable repeatability and relatively accurate measuring result.
Owner:CHINA UNIV OF PETROLEUM (BEIJING) +1

Method for comprehensively evaluating electric energy quality based on grey theory

The invention provides a method for comprehensively evaluating electric energy quality based on a grey theory. The method comprises the following steps that the weight of an electric energy quality evaluation index is calculated through an objective weighting entropy evaluation method; the weight of the electric energy quality evaluation index is calculated through a subjective weighting AHP method; the weight vector of the electric energy quality evaluation index is determined; the electric energy quality is comprehensively evaluated based on grey correlation analysis in the grey theory. Through the adopted combination weighting method, the defects of the single weighting method that the subjectivity of people is relied on too much in a subjective weighting method and expert opinions cannot be reflected in an objective weighting method are overcome, the expert opinions can be reflected, the actual condition of the electric energy quality can be reflected, and all subitem index weight coefficients of the scientific electric energy quality are obtained. The grey correlation analysis method is adopted on this basis, a sample to be evaluated is compared with standard samples of all electric energy quality level grades, and the comprehensive evaluation result of the electric energy quality can be objective and simple.
Owner:STATE GRID CORP OF CHINA +2

Method for detecting volatile organic compound in cigarette filter

The invention provides a method for detecting volatile organic compound in a cigarette filter, which comprises the following steps: a) preparing a sample; b) preparing a matrix correcting agent; c) preparing an interior label solution; d) preparing a standard sample; e) preparing a standard working solution; f) performing detection by using headspace-gas chromatography/ mass-spectrography; and g) calculating a detection result of the volatile organic compound in the sample. The invention establishes the method for detecting the volatile organic compound residue in the cigarette filter for the first time. By using the saturation sodium chloride aqueous solution as the matrix correcting agent and the fluorobenzene as the interior label, the matrix effect of a solid absorption matrix (namely the cigarette filter) is efficiently reduced and the error caused by the poor repeatability of the pre-treatment and the low precision of instrument is reduced. In the whole process, no organic solvent is used. The method has the advantages of environmental friendliness, energy-saving and low consumption. The detecting method has few interference factors and good repeatability, is accurate in measuring result, is simple to operate, and can be used for obviously increasing the sensitivity of headspace analysis.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC

Method for simultaneously measuring multiple residues of organic chloride and pyrethroid pesticides

The invention discloses a method for simultaneously measuring multiple residues of organic chloride and pyrethroid pesticides. The method comprises the following working procedures: crushing a tobacco sample until grain diameters are less than 450 mu m; adding 10 to 20ml of extracting solution and internal standard solution into every program of tobacco sample; extracting the mixed solution by using ultrasonic wave; filtering the mixed solution by using a funnel filled with anhydrous sodium sulfate to obtain the extracting solution; adding the extracting solution into a Florisil solid extraction column for extracting and eluting; collecting an eluent; analyzing the eluent by using a gas chromatograph, wherein the analysis comprises the following conditions: adopting an Elite 5MS capillary column, high-purity N2 as a carrier gas, a constant flow mode in which the flow rate is 0.5 to 1.5 ml/min, a sample inlet temperature of between 280 and 320 DEG C, a detector temperature of between 330 and 370 DEG C, splitless sampling in which the sampling volume is between 1 and 2 mu L, and an initial temperature of 100 DEG C which rises from 100 to 180 DEG C at a speed of 8 DEG C/min, is kept for 4 minutes, rises from 180 to 270 DEG C at the speed of 5 DEG C/min and is kept for 15 minutes until all sample flows out completely; and determining the nature of the sample by using the retaining time of a standard sample and quantifying by using an internal standard method. In the method, ultrasonic wave is adopted for extracting and a solid extraction column is adopted for purifying, so that the method has the advantages of operating step simplification, high work efficiency, good purification effect, capability of simultaneously measuring multiple residues of 25 kinds of pesticides including 17 organic chloride pesticides of hexachlorocyclohexane, DDT and the like, seven pyrethroid pesticides such as fenpropathrin and the like, and one plant growth regulator.
Owner:YUNNAN ACAD OF TOBACCO AGRI SCI

An oil reservoir inter-well connectivity determination method based on data driving

The invention discloses an oil reservoir inter-well connectivity determination method based on data driving, and the method comprises the steps of firstly collecting related parameters of an oil fieldblock, obtaining a filtering coefficient of each injection signal, carrying out the preprocessing of injection and production data, and correcting the time lag and attenuation of the injection and production data; performing normalization processing on the injection-production data to form a standard sample set of neural network learning and training; building a neural network, using a conjugategradient algorithm as a learning algorithm, and achieving the rapid optimization solution of neural network model parameters; and performing parameter sensitivity analysis based on the trained neuralnetwork model to obtain a connection coefficient for representing the inter-well connectivity of the oil reservoir. The method is simple and convenient, is high in calculation efficiency, is used forevaluating the dynamic connectivity between oil reservoir wells, has a better yield prediction effect while having the same inter-well connectivity coefficient calculation precision of a traditional inter-well connectivity judgment method, and can further guide formulation of optimization measures such as profile control and water plugging and intelligent oil field layered injection and productionhistory fitting and production optimization.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Preparation method of freeze-dried powder standard sample of animal-sourced substrate drug and metabolite residue thereof

The invention provides a preparation method of a freeze-dried powder standard sample of an animal-sourced substrate drug and a metabolite residue thereof. The method includes following steps: feeding experimental animals with drugs, wherein a drug feeding method is feeding, injecting or medicated bath with one or more drugs; controlling a feeding time; obtain a sample material containing raw drugs and/or metabolites through metabolism in animal bodies; adding a vitamin C solution; performing a mashing and homogenizing process to obtain meat paste; performing a vacuum freeze-drying process, a crushing and sieving process and a nitrogen-filling package process and a vacuum packaging process. In addition, a degreasing, repeated homogenizing and sieving process is included or not included according to fat content in an animal substrate. The standard sample can be transported at normal temperature and is long in preserving time. A situation of combination of a target object and the substrate is coincided with that of an actual detection sample. The standard sample can be used of quality controlling of relative detection and analysis, is homogeneous and stable, is convenient to transport, is reliable in use and has significant economic value and market competitiveness.
Owner:威海出入境检验检疫局检验检疫技术中心 +1
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