98 results about "Spot analysis" patented technology

A method is provided for comparing multiple samples of cell extract containing a plurality of components. The method comprises the steps of preparing at least two samples of cell extract from at least two groups of cells and of exposing each of said sample of said cell extract to a different one of a set of matched markers, e.g. luminescent markers, to bind the marker to the cell extract to label the cell extract, each marker within said set of markers being capable of binding to the cell extract and can be individually detected from all other markers within said set. The samples are then mixed to form a mixture and said mixture is electrophoresed to separate the components within the cell extract. At least two electronic images of the electrophoresed mixture are obtained (I) by detection of the individual markers, each image being represented by detection of a marker different from the others. One resultant electronic image (Ires) of the obtained at least two electronic images is created (II) and analyzed in order to identify spot analysis areas (III). The identified spot analysis areas are applied on the respective at least two electronic images for evaluating said areas in order to detect spots representing components of said cell extracts (IV).

Monitoring of a wellbore which penetrates a reservoir is carried out by providing tracer material at one or more subterranean locations within or proximate the wellbore, so that tracer may enter the flow and be present in flow from the wellbore; repeatedly taking samples from the flow from the wellbore, and analyzing the samples for the presence of tracer, in the vicinity of the wellsite. Taking samples from the flow will generally be done at the surface and may be done by automatic equipment controlled by a programmed computer. The computer may be programmed to take action, such as operating a valve within the well, in response to detection of tracer. Sampling repeatedly and analyzing on site can provide information in something close to real time and thus integrates the use of tracers into an overall process of monitoring and control.

The present invention relates to a lab-on-a-chip version of biosensor for an on-the-spot analysis whose analytical performances were remarkably improved, by incorporating commercial membranes, traditionally used for rapid diagnostics, into microfluidic channels engraved on the surface of a plastic chip, as follows: 1) reduction of sample size; 2) realization of variable functions for total analysis; and 3) transfer of medium by capillary action without the assistance of an external force.

A portable system and method for measuring the concentration of multiple chemical or biological substances where an onsite analysis of such substances is needed. The new and original handheld sensor system uses a disposable optical test element and a spectroscopic detector that measures the test element response to specific analytes through a change in light absorbance, luminescence, and other forms of light-based response. In this way, reflection light intensities indicative of the test element response can be used to measure the concentration of the target analytes. The sensor system is also capable of being interfaced to an information processing unit or computer so that analytical data can be manipulated or stored electronically.

A portable system and method for measuring the concentration of multiple chemical or biological substances where an onsite analysis of such substances is needed. The new and original handheld sensor system uses a disposable optical test element and a spectroscopic detector that measures the test element response to specific analytes through a change in light absorbance, luminescence, and other forms of light-based response. In this way, reflection light intensities indicative of the test element response can be used to measure the concentration of the target analytes. The sensor system is also capable of being interfaced to an information processing unit or computer so that analytical data can be manipulated or stored electronically.

The invention provides an olfactory analog instrument and an on-site analysis method for the odor grade of a specific substance. The invention has the following characteristics: 1, a gas sensor array constant temperature operation room, a computer and an autoinjection system are integrated in a test box; 2, utilization of a sample bottle with a volume of 250 ml and 25 ml of a to-be-tested sample enables a gas-liquid ratio to be 9: 1; 3, parallel resistance wires respectively wind in a semi-circle manner to generate 45-W power, so the sample and headspace volatilized gas are heated to a temperature of 80 DEG C in only 8 min and maintained at the temperature for 30 min; 4, 25 ml of an aqueous ethanol solution with a concentration of 100 ppm is used to generate standard reference gas in the sample bottle with a volume of 250 ml, and correction on gas sensors are carried out based on the generated standard reference gas; 5, headspace sampling flow is 500 ml / min, sampling time is 30 s, and gas sensor response signals undergo lowpass filtering and dimensionality reduction pretreatment; and 6, a database is established, and the olfactory analog instrument carries out on-site detection and grade prediction and identification on the odor of specific substances consisting of an adhesive, petroleum wax, leather, glycerin and edible vegetable oil.

The invention discloses a device and a method for rapidly detecting surviving unicellular organisms in ship ballast water. The device comprises a PDMS micro-fluidic chip and glass substrate G, wherein the PDMS micro-fluidic chip comprises a liquid storage hole A, a liquid storage hole B, a liquid storage hole C, a liquid storage hole D, a liquid storage hole E, a main channel, a first focusing channel, a second focusing channel, a detection channel, a first sorting channel and a second sorting channel, wherein the liquid storage hole A, the liquid storage hole B, the liquid storage hole C, the liquid storage hole D and the liquid storage hole E are inserted into a platinum electrode. The device has the beneficial effects that (1) full-automatic detection, sorting, counting and size determination of the surviving unicellular organisms in the ship ballast water are realized on the micro-fluidic chip, and the device is small in size and is portably and rapidly used for on-site analysis; and (2) a differential micro-fluidic chip and a signal differential amplification mechanism are adopted, and the signal to noise ratio of a detection signal can be improved, so that the detection precision is improved.

The present invention provides an apparatus and method for continuously monitoring the integrity of a pressurized well bore fluid sample collected downhole in an earth boring or well bore. The CDR continuous by measures the temperature and pressure for the down hole sample. Near infrared, mid infrared and visible light analysis is also performed on the small amount of sample to provide an on site analysis of sample properties and contamination level. The onsite analysis comprises determination of gas oil ratio, API gravity and various other parameters which can be estimated by a trained neural network or chemometric equation a flexural mechanical resonator is also provided to measure fluid density and viscosity from which additional parameters can be estimated by a trained neural network or chemometric equation. The sample tank is overpressured or supercharged to obviate adverse pressure drop or other effects of diverting a small sample to the CDR.

The invention relates to a thermal desorption sampling device used for surface airflow purging which is characterized by comprising a fixed control device (1) used for controlling whether a sample attachment sheet is clamped tightly, a surface airflow purging device (2) and a clipping seam which is formed between the fixed control device (1) and the surface airflow purging device (2) and is used for inserting a sample channel (3) of the sample attachment sheet; the fixed control device (1) and the surface airflow purging device (2) are connected with each other fixedly or movably; the sampling device provided by the invention can meet the sampling requirement of solid and liquid samples, can realize automatic operation, complete the steps of heating, sampling and analysis needed by the sampling in short time and meet the need that an ion mobility spectrometer carries out fast and on-spot analysis detection; the device provided by the invention has fastness, effectiveness, reasonable structure and wide application, and can provide gas samples for various gas analyzers.

Systems and methods for automatically generating an aim point correction for sniper operations. The present invention reduces spotter / sniper workload and improves trace spotting analysis. An example system includes a scope, a video capture component, an output device, and a processor in signal communication with the video capture component and the output device. The video capture component captures video of a bullet from when the bullet left a weapon to at least when the bullet crossed a previously determined target range. The processor determines from the captured video where the bullet was located relative to an intended target when the bullet was at the target range, generates a new aim point if the bullet was determined to have missed an intended hit point, and outputs the generated new aim point to the output device.

The invention provides a cardiac mapping signal analyzing and processing device and method, in particular to a device and method for analyzing the rhythm state of cardiac mapping signals. The device of the invention comprises a mapping electrode, a multistage amplifier, a data acquisition card, an acquisition module, a signal analyzing and processing unit and an output device. The method of the invention is based on the autocorrelation function and is characterized in that the time interval between the maximum peak and the second submaximum peak in the autocorrelation function sequence is used to estimate the main rhythm activation time interval of the signal, and the amplitude value of the submaximum peak is used as an index for measuring the regularity of the signal. The method of the invention can be used for the site analysis of the electrical activity of the heart in animal experiments and can also be used to assist the clinical diagnosis. As the system adopts the integrated acquisition and analysis structure and the method of the device is simple and effective, the device is characterized by wide application range and high real-time.

A system and method instantly on-site analyze seismic acceleration signals measured from a primary wave of an earthquake and at a detecting site. The system includes an embedded computing host and a signal preprocessing module. Hardware preprocessing is executed on the seismic acceleration signals; and whether the earthquake is a seismic event is able to be determined according to a seism determining logic. Seismic acceleration signals are converted into ground velocities and ground displacements to obtain a peak ground displacement. A seismic fracture time parameter is calculated through the ground velocities and ground displacements and then a seismic magnitude of the earthquake is obtained. According to the peak ground displacement and the seismic magnitude, an epicentral distance is further calculated. Then a peak ground acceleration of the earthquake's shear wave at the detection site is able to be obtained through the seismic magnitude and the epicentral distance.

A breakaway RFID tag is configured such that it comprises part of a Printed Circuit Board Assembly (PCB). Thus, the breakaway RFID tag can be used to track the PCB as it migrates through a manufacturing process. In one embodiment, the RFID tag can be assembled first and then used to track the PCB as it is populated with components and installed into larger assemblies and ultimately into the end device. Once the PCB is installed into a larger assembly or the end device, the breakaway RFID tag is configured such that it can be broken off and attached to the outside of the larger assembly or end device. In this manner, the RFID tag can be used to continue tracking the PCB all the way through the end of the manufacturing process. Accordingly, tracking information can be more efficiently correlated and used to improve inventory tracking, failure trend spotting analysis, and to improve service by providing information that can quickly identify potential problems in a failed field unit.

The invention belongs to the technical field of the detection of vanadium iron, and particularly relates to a method for analyzing vanadium iron ingredients by a melt smelting sampling-X-ray fluorescence spectrum process. The method comprises the following steps of: (1) in a low-content calibration standard sample, mixing a vanadiumiron guide sample and pure iron powder, smelting under vacuum, casting for forming, measuring by using an X-ray fluorescence spectrograph, measuring the strength of a high-content calibration standard sample on the X-ray fluorescence spectrograph, crushing, analyzing a constant value by a wet process, and establishing a standard curve for each calibration standard sample, wherein the high-content calibration standard sample is a vanadium iron sample with different ingredient content gradients; and (2) taking a vanadium iron melt in a smelting electric furnace, casting to form blocks, polishing, measuring by using the X-ray fluorescence spectrograph, and calculating the content of each element in vanadium iron according to the standard curve drawn in the step (1). By the method, analytical information can be fed back within 10 minutes, so the method has the characteristics of high speed, high efficiency, low cost, safety and environment friendliness, and is suitable for quick and on-spot analysis of a ferroalloy smelting furnace.

The present invention provides an apparatus and method for continuously monitoring the integrity of a pressurized well bore fluid sample collected downhole in an earth boring or well bore. The CDR continuous by measures the temperature and pressure for the down hole sample. Near infrared, mid infrared and visible light analysis is also performed on the small amount of sample to provide an on site analysis of sample properties and contamination level. The onsite analysis comprises determination of gas oil ratio, API gravity and various other parameters which can be estimated by a trained neural network or chemometric equation a flexural mechanical resonator is also provided to measure fluid density and viscosity from which additional parameters can be estimated by a trained neural network or chemometric equation. The sample tank is overpressured or supercharged to obviate adverse pressure drop or other effects of diverting a small sample to the CDR.

The invention belongs to the technical field of visual detection and relates to a circular ring side wall defect visual detection system. A first photographing device and a first strip-shaped light source are arranged above a side portion of a workpiece; an included angle between the light-emitting surface of the first strip-shaped light source and a horizontal plane ranges from 45 degrees to 70 degrees; a contour matching algorithm is executed on the basis of a collected workpiece image so as to perform recognition to obtain a workpiece contour image; a spot analysis algorithm is utilized toperform operation recognition on the workpiece contour image so as to obtain the area numerical value of an abnormal region; and a condition judgment algorithm is utilized to judge the area numericalvalue of the abnormal region, and a judgment result is outputted. According to the circular ring side wall defect visual detection system of the invention, the relevant parameters of the hardware facility and an ingenious arrangement effect are combined; arrangement parameters such as the inclination angle and height of the first strip-shaped light source, and the inclination angle and the heightof a first prime lens which are accumulated for many years are adopted; the optimized spot analysis algorithm is used in combination; and therefore, high-quality image acquisition is effectively achieved, and a high-accuracy defect recognition effect is guaranteed.

The invention discloses a laser-induced breakdown spectrograph for rapid analysis of metallurgical components and an analysis method therefor, and belongs to the technical field of metallurgical component analysis. The laser-induced breakdown spectrograph comprises a nanosecond laser, a multi-path photo-electric direct-reading spectrometer, a synchronous control device, a component analysis computer, a reflector, a focusing lens, a sample chamber, a sample container, an argon supply system, a collection lens and an optical fiber. The nanosecond laser and the component analysis computer are connected by a cable. The component analysis computer and the multi-path photo-electric direct-reading spectrometer are connected by a cable. The multi-path photo-electric direct-reading spectrometer and the synchronous control device are connected by a cable. The synchronous control device and the component analysis computer are connected by a cable. The analysis method comprises establishment of all non-matrix element working curves and measurement of all non-matrix element content values of unknown samples. The laser-induced breakdown spectrograph and the analysis method have the advantage that in detection analysis, accurate detection results can be obtained in 1 minute without pretreatment on a sample and the precision satisfies on-site analysis requirements.

The invention discloses a method for detecting the content of benzoyl peroxide in flour. The method comprises the following steps of adding an organic solvent into flour, fully stirring, carrying out immersion to obtain benzoyl peroxide extract, carrying out centrifugation of the benzoyl peroxide extract to obtain supernatant liquid, putting the supernatant liquid into a colorimetric pipe, addinga potassium iodide solution into the colorimetric pipe, adjusting a pH value of the mixed solution in the colorimetric pipe to a pH value of 2 by strong acid, placing the colorimetric pipe in the shadow until a reaction is balanced; adding a starch indicator into the colorimetric pipe, adding water into the colorimetric pipe for dilution of the mixed solution in the colorimetric pipe, and comparing a color of the diluted solution in the colorimetric pipe with colors of a standard colourimetric card to determine the content of benzoyl peroxide. The method is easy for operation, does not need ahigh-priced apparatus, reduces a detection cost and detection time, has low requirements for detection persons and a detection environment, can realize on-site detection, and is suitable for on-site analysis and large-area screening work.

A universal portable detector for an electrochemical biosensor takes a microcontroller integrating functions of digital-to-analog conversion and analog-to-digital conversion together as a core, wherein, a peripheral circuit comprises a power management module, a constant potential module, an E<2>PROM memory, a clock manager, a temperature sensor, a buzzer, a keypad input module and an LCD module;and the universal portable detector can be matched with the common varied electrochemical biosensors with a three-electrode system or a two-electrode system, particularly a chip of the small-sized orminiature electrochemical biosensor to realize chronoamperometry, chronocoulometry and multiple voltammetry detection functions, and meanwhile the detector can perform temperature correction on a detection result. The universal portable detector takes high integration level, low power consumption and practicability as a design principle; the detector has small volume and convenient power supply with a battery, thus having portability; and the detector is applicable to on-spot analysis in the fields such as medical detection, food security, environmental protection and the like, thus meeting the requirement for fast detection.

The invention provides a small two-stage vacuum rectangular ion trap mass spectrometer and a detection method thereof. The mass spectrometer comprises two stages of vacuum cavities. The first-stage vacuum cavity is internally provided with an atmospheric pressure interface sampling cone, a quadrupole rod and an ion gate electrode which form a quadrupole ion trap. The second-stage vacuum cavity is internally provided with a rectangular ion trap, an ion detector and a capillary tube. An ion optical element is arranged between the two stages of vacuum cavities. The detection method includes the steps that the quadrupole ion trap in the first-stage cavity is controlled to be in an ion trap storage mode and an ion trap synchronous analysis mode so that sensitivity of mass spectra can be improved, the quantitation limit is reduced, analysis flux is increased, influences of the space charge effect are reduced, and the resolution is increased. The quadrupole rod does not need high resolution and is low in processing precision requirement. Besides, the rectangular trap is easy to process and assemble, so that miniaturization is facilitated. Meanwhile, the detection method can guarantee good analysis performance and has wide application prospects in the field of on-site analysis and detection.

The present invention relates to a system of analysis, which can be used in a mobile laboratory in a drilling site situation or in a similar situation, suitable for measuring (preferably in relation to at least two partially gaseous species, which derive preferably from a mixture extracted from a drilling mud, for example, methane, ethane, propane and / or any other heavier hydrocarbons) the quantities of the different isotopes of at least a same chemical element (preferably the quantities of 13C, carbon isotope with 6 protons and 7 neutrons, and of 12C, carbon isotope with 6 protons and 6 neutrons, respectively) by means of a laser isotopes analyser regulated for a single, at least partially gaseous species which contains said chemical element.

The invention relates to a gas chromatography-surface acoustic wave rapid analysis and determination method for aldehyde and ketone materials, which utilizes gas chromatography and a surface acoustic wave sensor to rapidly analyze the concentration of the aldehyde and ketone materials and belongs to an instrument analysis method. The rapid analysis and determination method of the invention comprises the following steps: sampling the aldehyde and ketone materials in air; preprocessing samples, i.e. enabling the samples to be reacted with 2, 4-dinitrophenylhydrazine to prepare phenylhydrazone corresponding to the aldehyde and ketone materials; and adopting the gas chromatography and surface acoustic wave rapid analysis instrument to analyze the samples. The method of the invention has the advantages of short analysis time, analysis solution on the surface acoustic wave sensor of the volatile aldehyde and ketone materials, great analysis sensitivity enhancement, convenient operation and site analysis realization.

A lab-on-chip-based system is described for the direct and multiple sampling, control of the volume, fluid filtration, biochemical reactions, sample transfer, and dried spot generation on the conventional and commercial cards for dried fluid spot. Within an all-in-one integrated holder, the invention allows the complete process required to ensure a quantitative analysis of blood, plasma or any other fluids, modification and enrichment of molecule subsets, and formation of a dried fluid spot on the specific spot location of a passive cellulose, non-cellulose, absorbent, or non-absorbent membrane material sampling.

A method is provided for comparing multiple samples of cell extract containing a plurality of components. The method comprises the steps of preparing at least two samples of cell extract from at least two groups of cells and of exposing each of said sample of said cell extract to a different one of a set of matched markers, e.g. luminescent markers, to bind the marker to the cell extract to label the cell extract, each marker within said set of markers being capable of binding to the cell extract and can be individually detected from all other markers within said set. The samples are then mixed to form a mixture and said mixture is electrophoresed to separate the components within the cell extract. At least two electronic images of the electrophoresed mixture are obtained (I) by detection of the individual markers, each image being represented by detection of a marker different from the others. One resultant electronic image (Ires) of the obtained at least two electronic images is created (II) and analyzed in order to identify spot analysis areas (III). The identified spot analysis areas are applied on the respective at least two electronic images for evaluating said areas in order to detect spots representing components of said cell extracts (IV).

The invention discloses a simple and low-cost silver ion visual quantitative detection method. The method adopts an organic solvent which can be mutually soluble with water and has density more than 1g / mL at the temperature of 25 DEG C for dissolving 3,3',5'5'-tetramethyl benzidine (TMB). When aqueous solution containing silver ions is dropwise added into TMB solution, Ag<+> quickly oxidizes TMB to generate blue quinoid benzidine. As the adopted organic solvent can be taken as a bicolour layering intelligent regulator, a unique bicolour mixed solution which is blue at the upper layer and colourless at the lower layer is obtained finally; meanwhile, the length of the blue solution is positively correlated with concentration of Ag<+>, so that quantitative detection on Ag<+> at micromole level can be realized by visualizing and observing with naked eyes and measuring the length of the blue solution. According to the method disclosed by the invention, a Ag<+> detection process is extremely simple, an operator not trained professionally can carry out an experiment, more importantly, a quantitative signal can be read without using instrument or equipment, and on-site analysis and real-time detection on a sample can be realized while analysis cost is greatly reduced.

The invention discloses a method for measuring lignin of a reconstituted tobacco by a paper-making process by virtue of a near infrared reflectance spectroscopy technique. The method comprises the following steps: (1) collecting and preparing a representative sample; (2) collecting an original spectrum; (3) selecting a correcting sample set and a verifying sample set; (4) measuring a reference value of the sample; (5) carrying out pretreatment on spectrum; (6) establishing a PLC model; (7) verifying the model; and (8) measuring the lignin. The method disclosed by the invention is simple, feasible and fast. By adopting a near infrared spectrum nondestructive detection technology, not only can the analytical efficiency be enhanced and the cost be lowered, but also the method has obvious practicality for accurately measuring the lignin of the reconstituted tobacco, improving the detection efficiency and objectively reflecting the product quality. The method disclosed by the invention has the advantages of high detection speed, no pollution, greenness and environmental protection, high accuracy, good repeatability and the like, and is suitable for on-site analysis and fast detection of the lignin as well as online monitoring of fluctuation of product quality.

The invention discloses a method for measuring hot water solvends of a reconstituted tobacco by a paper-making process by virtue of a near infrared reflectance spectroscopy technique. The method comprises the following steps: (1) collecting and preparing a representative sample; (2) collecting an original spectrum; (3) selecting a correcting sample set and a verifying sample set; (4) measuring a reference value of the sample; (5) carrying out pretreatment on spectrum; (6) establishing a PLC model; (7) verifying the model; and (8) measuring the hot water solvends. The method disclosed by the invention is simple, feasible and fast. By adopting a near infrared spectrum nondestructive detection technology, not only can the analytical efficiency be enhanced and the cost be lowered, but also the method has obvious practicality for accurately measuring the hot water solvends of the reconstituted tobacco, improving the detection efficiency and objectively reflecting the product quality. The method disclosed by the invention has the advantages of high detection speed, no pollution, greenness and environmental protection, high accuracy, good repeatability and the like, and is suitable for on-site analysis and fast detection of the hot water solvends as well as online monitoring of fluctuation of product quality.

The invention discloses a method adopting the indirect weight to quickly measure the methane content in marsh gas. The methane gas in the marsh gas is injected into a methane collecting bottle filled with work liquid; the work liquid of the same volume is discharged into a receiving bottle from the methane collecting bottle; then the weight of the work liquid in the receiving bottle is measured so as to get the content of the methane in the marsh gas. The invention also discloses a methane quick analyzing instrument formed as follows: an outlet valve of a ZS-2 type marsh-gas content analyzing instrument is connected through a rubber tube with a methane collecting bottle; two apertures are arranged on the bottle cap of the methane collecting bottle for respectively arranging an intake tube and a discharging tube which is connected with a burette through a rubber tube; and the receiving bottle is arranged under the burette and a balance is arranged under the receiving bottle. The instrument is provided with a small volume; the measurement speed is high; the analysis cost is low; and the method is suitable for the site analysis.

The invention discloses a method using an X fluorescent spectrometry method to fast measure cadmium elements in soil. The method includes the steps of firstly, taking a certain amount of soil powder; secondly, loading the soil powder into the sample cup, and using a manual tablet press to compact the soil powder to form a to-be-measured sample; thirdly, placing the to-be-measured sample into a sample testing box, wherein the sampling testing box comprises a shell, a sample table and a hand-held machine, the upper end of the shell is provided with a hole, an elastic piece is mounted in the hole, the sample table is mounted at the bottom end in the shell, the front end of the hand-held machine is provided with N grooves, and the hand-held machine is connected with the sample testing box through the coordination of the grooves and the elastic piece; fourthly, using the X fluorescent spectrometry method to measure the X fluorescence intensity of the to-be-measured sample; fifthly, calculating the cadmium element content in the soil on the basis of the X fluorescence intensity of the to-be-measured sample. The method has the advantages that the portable X fluorescent spectrometry method is used to directly perform quantitative analysis on the cadmium elements, measuring accuracy can reach above 96%, and the method is simple to operate, free of pollution, free of consumables, small in size, portable and convenient in field work and on-site analysis.

A wet type sample gas analyzing system applicable to monitoring of combustion conditions of coal-fired kilns comprises a sampling probe, a sample preprocessing cabinet, an analyzing cabinet and the like. A jet pump for gas pumping, a gas-water separator, a dehumidifier, a filter, a buffer tank and a water drainage tank are mounted in the sample preprocessing cabinet, a secondary filter, an electronic cooler, a secondary buffer tank, a sample gas switching valve, a standard gas cylinder, a paper filter, a flow meter and a gas analyzer are mounted in the analyzing cabinet, and the sample preprocessing cabinet and the analyzing cabinet are mounted in a field analysis meter cabin. The system is capable of effectively removing dust in the sample gas with clean water and continuously acquiring waste gas samples, analysis result curves are continuous without breakpoint. Umbrella-shaped dust removal water mist sprayed by the probe can completely wash sample gas entering the system to remove various harmful and corrosive substances irrelevant to component analysis of O2, NO and CO in waste gas generated by fuel coal, and the wet type sample gas analyzing system used with the field analysis meter cabin is convenient to use, long in service life, simple in structure, low in maintenance and low in cost.