102results about How to "Short analysis time" patented technology

An image processing apparatus includes a face detector detecting face images from still-image frames successively extracted from a moving-image stream in accordance with image information items regarding the still-image frames, a face-feature-value calculation unit calculating face feature values of the face images in accordance with image information items regarding the face images, an identity determination unit determining whether a first face image in a current frame and a second face image in a previous frame represent an identical person in accordance with at least face feature values of the first and second face images, and a merging processor which stores one of the first and second face images when the first face image and the second face image represent an identical person, and which stores the first and second face images when the first face image and the second face image do not represent an identical person.

The invention provides a method for identifying viral files, which comprises: firstly, establishing a virtual system, operating a suspicious file in the virtual system, recording behavior information of the suspicious file, judging whether the suspicious file is the viral file or not according to the behavior information and a virus behavior feature library, marking the suspicious file to be the viral file if the suspicious file is the viral file, and otherwise marking the suspicious file to be a safe file. The invention also provides a device for identifying the viral files, which comprises a virtual system module which is used to establish the virtual system, to orient behaviors of the suspicious file to the virtual system, and to operate the suspicious file, a behavior information collecting module which is used to record the behavior information of the suspicious file, and a behavior characteristic analyzing module which is used to mark the suspicious file to be virus when the suspicious file is judged to be the virus according to the behavior information and the virus behavior feature library and is used to mark the suspicious file to be the safe file when the suspicious file is judged to be the safe file.

The invention relates to a method for separating an anthocyanins monomer from lycium ruthenicum fruits. The method comprises the following steps: (1) pretreating raw materials: removing impurities from lycium ruthenicum fruits, washing the lycium ruthenicum fruits with water to obtain the treated lycium ruthenicum fruits; (2) preparing a formic acid-methanol solution at a volume concentration of 2%; (3) adding the formic acid-methanol solution into the lycium ruthenicum fruits for extraction at room temperature to obtain an extract; (4) filtering, and concentrating the extract by evaporating to obtain an lycium ruthenicum anthocyanins extract; (5) treating macroporous adsorption resin; (6) redissolving the lycium ruthenicum anthocyanins extract, applying the redissolved lycium ruthenicum anthocyanins extract to the treated macroporous adsorption resin, and collecting effluent; (7) concentrating the effluent under reduced pressure to obtain crude anthocyanins; (8) injecting the crude anthocyanins into a high-performance semipreparative chromatographic column, and separating to obtain the anthocyanins monomer with the purity of higher than or equal to 90%; concentrating the anthocyanins monomer under reduced pressure, and performing freeze drying in vacuum to constant weight to obtain finished anthocyanins monomer. The method is good in separating effect, short in time consumption and low in cost.

The invention provides a rapid detecting method for furfural compounds in dairy products. The method includes the following steps that (1) an oxalic acid solution is added into a dairy product samplesolution, water-bath heating is carried out, and then cooling is conducted to reach room temperature; (2) afterwards, a trichloroacetic acid solution A is added, after vibrating mixing, centrifugationis conducted, supernate is taken, filter residues are added into a trichloroacetic acid solution B, after vibrating mixing, centrifugation is conducted, and supernate is combined and then added intothe trichloroacetic acid solution B to volume; and (3) a high performance liquid chromatograph is used for sample-injection analysis, and a reversed phase chromatographic column C18 with the filler particle diameter being 2.7-3.5 [mu]m is selected. The furfural compounds in dairy products are detected by selecting the reversed phase chromatographic column C18 with the filler particle diameter being 2.7-3.5 [mu]m, analysis duration is only 12 min, limit of quantitation is 0.01 [mu]g/mL, the linear range is 0.01-50 [mu]g/mL, the analysis time is greatly shortened, detecting sensitivity is improved, and the method has the advantages of rapidness, high efficiency and solvent saving.

The invention belongs to the technical field of agriculture, and discloses a method for quantifying crop growth potential phenotypic parameters and analyzing yield correlation based on vision, which provides more ideas for agricultural analysis through continuous breakthroughs in image processing, wireless sensors, artificial intelligence and other technologies, and makes traditional manual agriculture and mechanized agriculture develop towards modern intelligence and refinement agriculture. As one of that important analytical subject in the agricultural field, the intelligent and refined agriculture has important significance in the field of plant virtual, yield prediction, garden design and the like. It is of great significance to analyze the characterization parameters and morphologicalcharacteristics in the process of crop growth. On the one hand, the method can predict the relevant parameters of crops, which can guide the allocation of breeding environment; virtual plant growth technology can simulate the plant growth state at any time, so as to reduce the analysis time and reduce the analysis cost.

This invention provides a visualization biological chip device which at least comprises the following: a light source to send out light beam; a calibration lens to let the light source send out parallel light of large area which goes through the biological chip and makes the fluorescence material on the biological chip send out fluorescence; a focus lens to focus fluorescence; a filter sheet to filter the interference light wave; a CCD cameral to select the fluorescence signals into images which is translated into data through a image-digit translation device to judge and read the fluorescence light intensity. The visualization biological chip in this invention can make the sample simultaneously accept the high efficiency laser source and uses CCD cameral select the fluorescence image of the biological chip rapidly with large area for further analysis.

The invention relates to a method for rapidly separating and determining water-soluble B-vitamins in infant food and dairy products. The method comprises the following steps: preparing a standard working solvent: weighing an appropriate amount of vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6, vitamin B9 and vitamin B12 standard substances, placing into a brown volumetric flask, reaching a constant volume of 100mL by virtue of ultra-pure water, and freezing storing; preparing a sample working solvent: weighing 3 to 8 g of samples, adding 50 to 70 mL of 0.1mol/L hydrochloric acid, uniformly mixing, sealing, placing into a high-pressure sterilizing pot, keeping for 25 to 35 min at 120 to 125 DEG C, dissolving, and performing pretreatment for the sample by adopting an enzymolysis method; and analyzing by adopting a liquid-phase chromatograph-mass spectrometry. The method can analyze and detect seven water-soluble B-vitamins, ensure the recovery rate of each component and save the detection time and cost.

The invention provides a state labeling method for estimating the reliability of a distribution network. By the method, the switch-on state of an outage switch and the switch-on state of a normally-open switch in the distribution network can be labeled. Compared with the prior art, the invention has the advantages that: fault analysis time of the distribution network which is operated in real time can be shortened; and the outage duration time of each element and each load after faults can be accurately and quickly determined, so that reliability indexes of the distribution network can be accumulated.

The invention discloses an LC-MS/MS analysis method for detecting morphinane alkaloid in whole blood and urine. The conditions of LC-MS and MS are separately as follows: 1) LC-MS chromatographic conditions: the mobile phase is composed of A and B, wherein A is an aqueous solution containing 2mmol/L of ammonium formate and 0.05% (v/v) of formic acid, B is acetonitrile containing 2mmol/L of ammonium formate and 0.05% (v/v) of formic acid, the volume ratio of A to B is 90:10; the column temperature is 45 DEG C; the flow rate is 0.2mL/min; the sampling volume is 10mu L; and 2) MS conditions: the detection mode adopts multiple reaction monitoring (MRM); the scanning mode adopts positive ion scanning; the electrospray voltage is 3200V; the atomization air flow rate is N2 600L/hr; the cone gas glow is N2 50L/hr; the ion source temperature is 105 DEG C; the collision gas is argon; and the internal standard adopts morphine-d3. The morphinane alkaloid contains morphine-3-beta-D-glucuronide, morphine, O6-monoacetylmorphine and codeine. The analysis method of the invention adopts solid phase extraction to purify the sample, thus the qualitative and quantitative measurements become more accurate; by adopting different elution and elution conditions, the obtained rate of recovery can be the optimal; and after the sample is added, methanol is used for further elution, thus simplifying the experimental procedures and reducing the analysis time.

The invention relates to a method for separating and preparing anthocyanin monomer from Nitraria tangutorum Bobr, which comprises the following steps: (1) raw material pretreatment: roguing dry Tangut Nitraria tangutorum Bobr, and washing with water to obtain the treated Nitraria tangutorum Bobr; (2) preparing a formic acid methanol solution of which the volume concentration is 2%; (3) adding the formic acid methanol solution into the Nitraria tangutorum Bobr, and carrying out normal temperature leaching to obtain an extract; (4) filtering the extract, and concentrating by evaporation to obtain a Nitraria tangutorum Bobr anthocyanin extractum; (5) treating with a macroporous adsorbent resin; (6) redissolving the Nitraria tangutorum Bobr anthocyanin extractum, passing through the treated macroporous adsorbent resin, and collecting the effluent liquid; (7) concentrating the effluent liquid under reduced pressure to obtain an anthocyanin crude product; (8) injecting the anthocyanin crude product into a high-performance semipreparative chromatographic column to perform separation, thereby obtaining the anthocyanin monomer with the purity of at least 90%; and finally, concentrating the anthocyanin monomer reduced pressure, and drying to constant weight, thereby obtaining the anthocyanin monomer finished product. The method has the advantages of favorable separating effect, short time consumption and low cost.

When a liquid mixture of two samples such as biological samples labeled with stable isotopes is subjected to a relative quantitative analysis using a liquid chromatography-tandem mass spectrometry system, various constituents are simultaneously ionized. Accordingly, sufficient time required for second mass spectrometry is not ensured, whereby some ions remain unanalyzed after measurement. To address this problem, after second mass spectrometry, amino acid sequencing is performed using the analysis data of the second mass spectrometry, which enables determination on the presence/absence of a specific amino acid labeled with a stable isotope. When the specific amino acid is present, the m/z value of an isotopically-labeled-paired ion in an MS spectrum is calculated, and non-target information for use in second mass spectrometry is created using the calculated m/z information. This avoids redundant second mass spectrometry on sample components derived from the same peptide while allowing second mass spectrometry to be efficiently performed.

The invention discloses an Android application maliciousness detection method based on application behaviors. Aiming at the characteristics of an Android system, factors in the aspects of a componentlife cycle, an asynchronous call function, a call relation between components and the like in Android are considered, and corresponding processing is carried out on the factors, so that the integrityof analysis is ensured, and therefore, a complete control flow graph and a complete function call graph of the Android application can be obtained. And then by defining a safety sensitive function andcombining a reverse analysis technology and a program slice analysis technology, reliable safety sensitive behavior path information is obtained. And finally, by using the convolutional neural network of one of the deep learning models, the extracted behavior paths are trained and classified, and the trained model can carry out maliciousness detection on an unknown Android application. Accordingto the invention, all behavior paths which may be related to malicious behaviors in the Android application can be effectively extracted; and the key information in the behavior path is stored for subsequent analysis, and the behavior path can accurately describe the specific behavior of the application, so that the analysis model based on the behavior path has better detection precision.

The present invention belongs to the technical field of pentachlorophenol detection, and particularly relates to a pentachlorophenol detection method, which comprises: S1, solid phase micro extraction wire preparation: (1) silver wire washing, (2) electrochemical roughening of the silver wire, and (3) silver wire modification; and S2, pentachlorophenol detection: (1) extraction, and (2) surface enhanced Raman detection. According to the present invention, the SPME-SERS combined technology is used, such that the complex sample pre-treatment process can be reduced or even be eliminated, and the analysis time can be shortened; and the detection sensitivity is high, the detection limit is 6.4*10<-8>M, and the method is the online detection method.

The invention relates to a method for determining the residual quantity of 15 kinds of triazole type pesticides in fruit. The method comprises the following steps of (1) sample pretreatment: homogenated fruit samples are subjected to vibration shaking and high-speed centrifugation by using an acetonitrile solution, NaCl and anhydrous MgSO4 to obtain an extracting solution; then, PSA, C18 and anhydrous magnesium sulfate are selected as adsorbents to perform dispersive solid-phase extraction on the extracting solution; still standing, microporous filtering membrane passing and nitrogen gas drying through blowing are performed; next, redissolving is performed by an acetone and cyclohexane mixed solvent; uniform mixing and determination preparation are performed; (2) substrate standard solution preparation; (3) on-line gel color spectrum series gas chromatography-mass spectrum determination. The method has the characteristics of low background interference, high enrichment efficiency, high sensitivity, simplicity, convenience, high speed and accuracy, and can meet the residue monitoring requirements of the triazole type pesticides in the fruit.

The invention relates to a method for determining the content of elemental mercury in metavanadate and a preparation method for a sample solution, belonging to the technical field of element detection. To overcome a technical problem, the invention provides the preparation method for the sample solution used for determination of the content of elemental mercury in metavanadate. The preparation method comprises the following successive steps: dissolving a metavanadate sample with water; adding nitric acid and hydrogen peroxide and carrying out heating to 60 to 65 DEG C for digestion; and after completion of digestion, carrying out cooling to room temperature and then carrying out diluting with water until a volume is fixed so as to obtain a sample detection solution. According to the invention, an ICP-MS determination method is established for determination of the trace impurity element mercury with a content in a range of 0.0001 to 0.1000% in metavanadate, and performance indexes of the method are that quantitative determination lower limit is 0.0001%, the degree of precision is less than 10% and a recovery rate is 80 to 120%. The determination method has the characteristics of easy and fast operation, short analysis time, small usage amount of reagents, low blank, few influence factors, low detection lower limit, high precision, high accuracy, etc.

The invention discloses a method for detecting moisture content in aquatic products by using a low-field nuclear magnetic resonance technology. According to the method, the low-field nuclear magneticresonance technology is combined with a drying weight loss method to determine the moisture content, and a prediction model of the moisture content of a sample is constructed based on nuclear magneticrelaxation data and the moisture content, so that the moisture content of an aquatic product with unknown moisture content is predicted; the moisture content in the sample can be rapidly and precisely measured without being influenced by substances on the surface of the sample, and the problems of poor effect, long consumed time and the like of a traditional aquatic product moisture content measuring method are effectively solved; an important technical support is provided for raw material quality control and aquatic product research of aquatic product processing enterprises; and the application range of the low-field nuclear magnetic resonance technology in aquatic product detection and research is expanded, and the development prospect of the low-field nuclear magnetic resonance technology is promoted. The method can achieve the purpose of quickness and no damage, and realizes quick detection of the water content of the aquatic products.

The invention discloses a method for extracting a common traditional Chinese medicine from traditional Chinese medicinal materials and authenticating the common traditional Chinese medicine through MALDI-TOF-MS, and belongs to the technical field of biology. According to the method, the traditional Chinese medicinal materials are smashed at high speed, total protein and polypeptide are extracted from the traditional Chinese medicinal materials, dialysis desalination is conducted, then the MALDI-TOF-MS is adopted for detection, and a traditional Chinese medicinal material protein map is obtained. The simple protein extracting technology and Malditof are combined for authenticating the protein maps of the common traditional Chinese medicinal materials such as astragalus membranaceus, ginseng and liquorice. The method has the advantages of being easy and reliable to implement, and provides selections and references for authenticating the common traditional Chinese medicinal materials.

Provided is a method for diagnosing cancer through a difference with a control group in view of the ratio of a deglycosylated peptide fragment and a non-glycosylated peptide fragment in a protein including an N-linked glycosylation motif. Further provided is a method for diagnosing cancer through the detection of the glycosylation ratio in the protein according to the subject matter enables the diagnosis of cancer with high specificity and sensitivity using at least one existing marker, and can be useful in discovering new markers for diagnosing cancer.

The invention relates to an electron pressure controller, which comprises a control comparison circuit, a signal processing circuit, a digital to analog conversion control module and a proportional electromagnetic valve, wherein the signal processing circuit and the digital to analog conversion control module are connected with the input end of the control comparison circuit respectively; and the proportional electromagnetic valve is connected with the output end of the control comparison circuit. Electron control is adopted, so that control accuracy and correctness are improved, and the analysis time is shortened; the proportional electromagnetic valve is adopted, so that internal closed loop control and an external pressure sensor are provided, and accuracy and resolution are enhanced; and the digital to analog conversion control module is provided, so that an analog quantity and a digital quantity can be controlled, and the application range of an instrument is expanded.

The invention discloses an analytical method for measuring content of soluble lead in domestic ceramic. The analytical method comprises the following steps: cleaning a domestic ceramic sample to be measured, naturally airing, dipping a cotton swab in a special kit into a cleaning agent to scrub the surface of the domestic ceramic sample back and forth for 30 s, putting the cotton swab onto a color test paper board, dripping a drop of a color developing agent onto the color test paper board, standing for 2 min, contrasting the color test paper board and a standard operation color level contrast card under the condition of bright light, and determining result range of soluble lead content in the sample by a visual colorimetric method. In comparison with the prior art, the invention has the following advantages: detection limit of lead is 20 ng; the whole analytical testing process lasts for 5-10 min; analytical time is greatly shortened; and work efficiency is raised. Fitting curve regression coefficient of lead dissolving-out amount-scrubbing amount is greater than 0.99, which shows that it is feasible to speculate dissolving-out amount by measuring the scrubbing amount. The method of the invention is simple, fast and easy to operate, and can meet requirements of fast analysis of soluble lead content of domestic ceramic.

The invention is applicable to the technical field of big data application, and provides an electricity stealing behavior judgment method and a terminal device. The method comprises the steps of determining the theoretical electricity consumption and the actual electricity consumption of a user according to the data, collected by an electricity consumption information collection system one day before the electricity stealing behavior judgment, of the target user at a preset collection point; according to the theoretical electricity consumption and the actual electricity consumption, judging whether the user has a first-level electricity stealing risk or not; if yes, judging whether the user has a voltage and current abnormal event or not on the current day through the electricity stealingbehavior; if yes, judging that the user has a second-level electricity stealing risk. According to the present invention, the related personnel can position the electricity stealing behavior of the user according to the judgment result, the monitoring blind area of an acquisition system is greatly reduced, the economic loss of a power supply company is reduced, and the electricity stealing risk classification is helpful for the working personnel to preferentially arrange analysis and troubleshooting work according to the event level, and is suitable for practical application.

The invention provides a rapid detection method for alkannin. The method comprises the steps of 1, sample preparation, 2, PY-GC/MS detection and 3, data analysis and qualitative and quantitative analysis. The PY-GC/MS technology is selected for detecting the content of alkannin in lithospermum, the rapid and microcrystalline detection method for alkannin is provided for solving the problems that qualities of the alkannin in actual production and living are different due to different producing areas, seasons and processing methods, and then the alkannin or the quality of the alkannin compound preparation is preliminarily judged. The rapid detection method has the advantages of being easy to implement, low in detection limit, good in experiment reproducibility and visual and reliable in experimental data, is particularly applicable to micro-sample detection, and can be used for preliminary comparison of quality differences of alkannin or alkannin compound preparation samples of different producing areas, varieties, batches and manufacturers, the application range is wide, and the preliminary judgment basis is provided for quality standard and modernization application of alkannin or alkannin compound preparations.

The invention relates to a separation and measurement method of besifloxacin hydrochloride and an isomer of besifloxacin hydrochloride. The method is characterized by adopting a chiral chromatographic column which takes cyclodextrin as a filler and adopting a mobile phase system formed by a buffer salt solution and an organic solvent. After the method is adopted, the besifloxacin and the enantiomer of the besifloxacin are effectively separated from each other, and the separation degree of the besifloxacin and the enantiomer of the besifloxacin reaches up to more than 3.5, so that the quality of besifloxacin hydrochloride can be accurately and effectively controlled. Compared with the existing patents and literatures, the method does not need a complicated derivative process and an expensive derivatization reagent on the whole, and is simple in sample pretreatment process, short in analysis time and high in operability. After the method is used, the besifloxacin and the optical isomer of the besifloxacin are simply, rapidly and accurately separated and detected.

The invention relates to the technical field of medicine detection, and particularly discloses a construction method of a flavonoid fingerprint spectrum in a ginkgo leaf extract or a preparation of the ginkgo leaf extract. The construction method comprises the following steps: constructing a fingerprint spectrum by adopting a high performance liquid chromatography, wherein the chromatographic conditions of the high performance liquid chromatography are as follows: a stationary phase is a chromatographic column taking phenylsilane bonded silica gel as a filler, a mobile phase A is a formic acidaqueous solution with the volume concentration of 0.05-0.2%, a mobile phase B is acetonitrile, a detector is an ultraviolet detector, the detection wavelength is 265 nm, and the column temperature is25-40 DEG C; enabling the flow rate as 0.2-0.45 mL/min, and performing gradient elution. The fingerprint spectrum provided by the invention provides a scientific basis for comprehensively establishing the quality control standard of the ginkgo leaf extract or the preparation of the ginkgo leaf extract.

An on-line detector capable of continuous sample injection is designed in the invention. According to the detector, an ion-mobility spectrometry technique as a base detection technique is adopted and sample thermal desorption analysis and headspace sample feeding techniques are combined. A sample with a complex matrix does not need pretreatment and is collected to the surface of a sampling sheet, the sampling sheet allows volatile components of the sample to be gasified in a thermal desorption analysis sample injector through a belt type conveying manner, and then the sample vapor is carried by a carrier gas to enter the detector and subjected to on-line detection and analysis. The detector achieves on-line continuous detection of propofol in human blood during operations and is used for directing clinical administration by doctors.

An aluminium silicide oxide carrier for product analysis is prepared from Al2O3 and Si contained raw material through proportionally mixing at high temp. Its advantages are strong adsorption and desorption power, low cost and high analysis speed.

The invention relates to a method for determining content of a chemical composition of a lignocellulose plant by adopting a thermogravimetric analysis meter. The method comprises the following steps: performing programmed temperature rise treatment on a corrected sample set by adopting the thermogravimetric analysis meter, thereby acquiring a thermogravimetric curve of the corrected sample set; determining a target index content of the corrected sample set according to a standard method and taking the target index content as a reference value; combining the thermogravimetric curve of the corrected sample set with the reference value by adopting a partial least squares method to establish a correcting model; substituting the thermogravimetric curve of a to-be-determined sample into the correcting model and calculating, thereby acquiring the target index content of the to-be-determined sample. Compared with the conventional wet chemical analysis, the method provided by the invention has the characteristics of short time, high speed, accurate analysis result, less quantity demand of the sample, and the like. According to the method provided by the invention, the problems of complex steps, long time, high cost and low efficiency of the traditional analysis method can be effectively solved, and the microanalysis and batch-analysis can be performed.

The invention provides a method for quantitatively analyzing the total amount of 2-ethylanthraquinone, tetralin-2 ethylanthraquinone and degradation substances in a hydrogen peroxide working solution produced by anthraquinone process by using normal-phase efficient liquid adsorption chromatography. Compared with the conventional reverse-phase efficient liquid distribution chromatography analysis method, the method has the advantages that separation degree of different types of substances including a heavy aromatics series, anthraquinone and degradation substance series and trioctyl phosphate is high, analysis time is short, and the sensitivity of a degradation substance peak is high. Besides, the problem that a heavy aromatics C10 component and a 2-ethylanthraquinone and degradation substance peak are overlapped in reverse-phase liquid distribution chromatography analysis is solved, and an analysis result is accurate.

The invention discloses an analysis method of cyclic adenosine monophosphate in red jujubes. The method comprises the following steps: step 1, establishment of a quantitative working curve; step 2, establishment of chromatographic conditions; and step 3, establishment of mass spectrometry conditions. According to Tthe invention, establishes a high performance liquid chromatography-tandem mass spectrometry method is established for measuring cyclic adenosine monophosphate, and the method has the characteristics of short analysis time, good separation degree, high sensitivity, strong anti-matrixinterference capability and simple and convenient operation. In addition, the high performance liquid chromatography-tandem mass spectrometry method can provide accurate molecular weight informationof compound parent ions and daughter ions, can conclude a molecular formula, is very suitable for structural analysis and discrimination of compounds, and provides a scientific research and analysis method for researching the content of cyclic adenosine monophosphate in vivo at the later period.

The invention relates to a method for measuring the content of heavy metal in soil by a hand-held X-ray fluorescence spectrometer. The method comprises the following steps: 1) take an appropriate quantity of a soil standard sample and a to-be-tested soil sample, then drying the soil standard sample and to-be-tested soil sample, and pressing the dry soil standard sample and to-be-tested soil sample under 32-35 t for 32-35 s to obtain the soil standard sample and the to-be-tested soil sample; 2) drawing a calibration curve according to the linear relationship between strength and content; 3) opening the hand-held X-ray fluorescence spectrometer, preheating the hand-held X-ray fluorescence spectrometer for 20-25 min, then testing the soil standard sample and the to-be-tested soil sample, and comparing a result with the calibration curve to obtain the content of the heavy metal in the to-be-tested soil sample. The method has the advantages that the method is simple, operation is easy, analysis time is greatly shortened, the measurement result is accurate, and precision is high.