95 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 (I_res) 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.

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 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.

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.

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 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.

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 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.

The invention discloses a method for measuring cellulose of a reconstituted tobacco 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 cellulose. 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 the method also has obvious practicality for accurately measuring the cellulose 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 cellulose of a reconstituted tobacco product as well as online monitoring of fluctuation of product quality.