220 results about "Particle imaging" patented technology

The design of a compact, high-efficiency, high-flux capable compact-accelerator fusion neutron generator (FNG) is discussed. FNG's can be used in a variety of industrial analysis applications to replace the use of radioisotopes which pose higher risks to both the end user and national security. High efficiency, long lifetime, and high power-handling capability are achieved though innovative target materials and ion source technology. The device can be scaled up for neutron radiography applications, or down for borehole analysis or other compact applications. Advanced technologies such as custom neutron output energy spectrum, pulsing, and associated particle imaging can be incorporated.

The present disclosure relates to apparatus, systems, compositions, and methods for analyzing a sample containing particles. In some aspects the system comprises an analyzer which may be a visual analyzer. In one aspect, this disclosure relates to a particle imaging system comprising a flowcell through which a sample containing particles is caused to flow, and a high optical resolution imaging device which captures images for image analysis of samples. Other compositions, methods and features of this disclosure are disclosed herein.

Superparamagnetic nanoparticle-based analytical method comprising providing a sample having analytes in a sample matrix, providing a point of care chip having analytical regions, each of which is a stationary phase having at least one or more sections, labeling each of the analytes with a superparamagnetic nanoparticle and immobilizing the labeled analytes in the stationary phase, providing an analytical device having a means for exciting the superparamagnetic nanoparticles in vitro and a means for sensing, receiving, and transmitting response of the excited superparamagnetic nanoparticles, placing the chip in the analytical device and exciting the superparamagnetic nanoparticles in vitro, sensing, receiving, and transmitting the response of the superparamagnetic nanoparticles, and analyzing the response and determining characteristic of the analytes, wherein the response of the superparamagnetic nanoparticles comprises harmonics. The present invention also provides the hybrid point of care chip and analyzer to be used in the analytical method.

A particle analyzing apparatus, comprising: a flow cell which forms a specimen flow including particles; first and second light sources; an irradiation optical system which applies lights emitted from the first and second light sources so that the lights are applied to the specimen flow; a detector which detects forward scattered light, the forward scattered light being emitted from the first light and scattered by the particle in the specimen flow, and generates a signal according to the detected scattered light; a light blocking member disposed between the flow cell and the detector; a controller which obtains characteristic parameters of the particle based on the signal from the detector; and an imaging device which captures an image of the particle in the specimen flow using the light from the second light source is disclosed. Particle imaging method is also disclosed.

The present disclosure relates to apparatus, systems, compositions, and methods for analyzing a sample containing particles. A particle imaging system or analyzer can include a flowcell through which a urine sample containing particles is caused to flow, and a high optical resolution imaging device which captures images for image analysis. A contrast pattern for autofocusing is provided on the flowcell. The image processor assesses focus accuracy from pixel data contrast. A positioning motor moves the microscope and/or flowcell along the optical axis for autofocusing on the contrast pattern target. The processor then displaces microscope and flowcell by a known distance between the contrast pattern and the sample stream, thus focusing on the sample stream. Cell or particle images are collected from that position until autofocus is reinitiated, periodically, by input signal, or when detecting temperature changes or focus inaccuracy in the image data.

The invention relates to a three-dimensional single-well gas injection oil replacement simulation experiment device for a fracture-cavity reservoir. The experiment device comprises a gas injection system, a fracture-cavity simulation system and an image collecting and information processing system, wherein the fracture-cavity simulation system is communicated with the gas injection system, and the image collecting and information processing system is used for collecting, transmitting and processing image and data information of the fracture-cavity simulation system. The fracture-cavity simulation system comprises a plurality of karst cave models, a plurality of fracture models and a plurality of wellbore models, wherein the fracture models are used for allowing every two adjacent karst cave models to be connected in series; the wellbore models are communicated with the gas injection system, all the karst cave models and all the fracture models. The image collecting and information processing system comprises a plurality of particle imaging test modules and image collecting modules, wherein the particle imaging test modules are arranged in all the karst cave models respectively, and the image collecting modules are arranged on the periphery of the fracture-cavity simulation system. The experiment device can accurately and visually monitor the migration speed, pressure and time, in the gravitational differentiation process, of the three phases comprising oil, gas and water in karst caves, fractures and wellbores in real time, and therefore the experiment device can be widely used in research, development and production of oil and gas fields.

The invention provides a functional spraying and combustion visualization measuring constant volume bomb. The constant volume bomb includes a bomb body and 6 windows provided on the bomb body. The axes of all windows intersect at the center of the constant volume bomb so as to form a measurement region. The windows can be provided with adaptive covers having different functions. The constant volume bomb is designed to have multiple sealing, such that the constant volume bomb can withstand extreme pressure and temperature loads, and the large range of warm pressing can be adjusted. The constant volume bomb is designed to have adaptors which ensure the constant volume bomb can use various types of sensors. The bomb body is provided with a plurality of air inlet guide holes thereon, which can ensure stabilization of air inlet pressure and keep the measurement region unaffected, and also keep quartz windows from being polluted by oil mist and combustion products, thus achieving on-going measurement. According to the invention, the constant volume bomb can provide flexible light path arrangement for one or a group of multiple measurement technologies of shadow/schlieren, laser induced flourescense, particle imaging velocity measurement and spectrum temperature measurement, etc. The constant volume bomb has tight structure, can research spray atomization, evaporation, air blending, gas mixture distribution, combustion and process product characteristics, etc, has a wide range of measurement parameters, and has universality.

A particle imaging system and a method provided for analyzing particles in a fluid; the system comprising a means for capturing image data of the fluid within a sample cell, and a means for flow control, a valve and a pump, wherein the fluid within the sample cell is periodically stopped, or slowed down, for image capturing and moved rapidly between image capturing events. Advantageously, the present invention allows to increase exposure times, which is particularly significant for fluorescent imaging at low illumination levels.

The invention provides an evaluation device and a method for the complex flow regime and heat transfer effect of a swirling impinging jet. The top crossbeam part of an experiment table is provided with a three-degree-of-freedom mechanical arm. The upper middle part of the experiment table is provided with a gas collection chamber. The bottom of the gas collection chamber is connected with a stable straight pipe section via a flange to be provided with a swirling jet nozzle. The lower part of the swirling jet nozzle is provided with an insulation can. An air flow, provided by a gas source pump (or a blower fan), passes through a dust removal filter to flow into the steady-flow gas collection chamber, and then is sprayed out of the swirling jet nozzle after passing through the steady-flow straight pipe section so as to directly impinge a metal target surface heated at the lower part of the nozzle. Inside a test instrument, a three-dimensional particle imaging tachometer and a hot-wire anemometer are arranged to measure the complex flow state and the flow parameter thereof in a swirling impinging jet space. Meanwhile, a hot-fluid density instrument, a thermal infrared imager and a temperature sensor are arranged to test the impinging heat-transfer effect of the target surface. According to the technical scheme of the invention, the device is simple in structure. The device and the method provide a feasible experiment device and an evaluation method for the research on the impinging complex flow of a swirling jet and the heat-transfer characteristic rule.

The invention provides a thermo-acoustic process testing system and a thermo-acoustic process testing method. The testing system comprises an acoustic field modulation unit, a flow field measurement window, a temperature field measurement window, a micro-scale particle imaging speedometer, a thermal infrared imager and a time-space image mapping and superposing unit. The testing method comprises the following steps of: 1) generating temperature fields, and acoustic fields with stable frequencies, amplitudes and phase angles at the two ends of a thermo-acoustic core; 2) measuring flow field distribution in the thermo-acoustic core at a series of sampling time points tc; 3) measuring a temperature field distribution process along with time variation in the thermo-acoustic core; 4) equivalently converting the flow field distribution at each sample time point tc into the flow field distribution at a virtual sampling time point tc' in the same period T of an acoustic field according to a sampling time point serial number; and 5) acquiring the correspondence between the flow field distribution and the temperature field distribution along with time variation. By the system and the method, the temperature fields and the acoustic fields in the thermo-acoustic core can be synchronously measured, and a measurement result really reflects an actual thermo-acoustic process.

The invention discloses a fracture-cavity type oil and gas reservoir natural driving energy three-dimensional simulation experiment set. The experiment set is mainly composed of a cubic glass slot, and an oil and gas reservoir simulation unit, a water injection simulation unit, a gas injection simulation unit, an oil injection simulation unit, a data collecting simulation unit and an image collecting simulation unit which are respectively connected with the cubic glass slot. The oil and gas reservoir simulation unit comprises an oil and gas reservoir model and a shaft; the water injection simulation unit comprises a water tank, a water pump, a pressure bearing water tank, and a metal pipe; the gas injection simulation unit comprises an air compressor, a gas storage pot, an emptying valve, a draining filter and a cold dryer; the oil injection simulation unit comprises an oil tank, a pressure bearing oil tank, a metal pipe and an oil pump; the data collecting simulation unit comprises a flow meter and a pressure gage; a particle imaging testing system of the image collecting simulation unit is installed on a mobile slide rod at outside of the cubic glass slot. The fracture-cavity type oil and gas reservoir natural driving energy three-dimensional simulation experiment set is reasonable and visible in structural design, and can carry out the three-dimensional simulation experiment study of the oil and gas reservoir exploration under the function of complex natural energy.

The invention comprises an apparatus and method of use thereof for using a single patient position during, optionally simultaneous, X-ray imaging and positively charged particle imaging, where imaging a tumor of a patient using X-rays and positively charged particles comprises the steps of: (1) generating an X-ray image using the X-rays directed from an X-ray source, through the patient, and to an X-ray detector, (2) generating a positively charged particle image: (a) using the positively charged particles directed from an exit nozzle, through the patient, through the X-ray detector, and to a scintillator, the scintillator emitting photons when struck by the positively charged particles and (b) generating the positively charged particle image of the tumor using a photon detector configured to detect the emitted photons, where the X-ray detector maintains a position between said the nozzle and the scintillator during the step of generating a positively charged particle image.

The present invention relates to a system for realizing simultaneous measurement of a combustion temperature field and a velocity field, comprising a first CCD camera, a first light split wedge and alaser. A second CCD camera is disposed at bottom left of the first CCD camera and an imaging plate is mounted at the right side of the second CCD camera. A Longkey grating is disposed at the right side of the imaging plate and a first plane reflecting mirror is mounted at the right side of the Longkey grating. A second light split wedge is disposed below the first light split wedge and the first light split wedge is located below a second plane reflecting mirror. The laser is mounted at the right side of a synchronous controller and the synchronous controller is located below the second CCD camera. The system combines a particle image velocimetry (PIV) with a light deflection imaging principle for measuring a three-dimensional velocity field of a flow field using the PIV and measuring a three-dimensional temperature field of the flow field using the light deflection imaging principle. While the two are combined, the three-dimensional velocity field and temperature field of the combustion field are simultaneously obtained.

The invention provides a test device for the dynamic characteristics of a low-speed wind tunnel aerial refueling hose-taper sleeve. The device comprises a refueling pipe, a refueling taper sleeve, a refueling pipe supporting mechanism, a refueling pipe movement mechanism, a fuel receiver model, a fuel receiving taper pipe, two high-speed cameras and PIV (Particle Imaging Velocity) equipment, wherein the refueling pipe is installed on the refueling pipe supporting mechanism; the refueling pipe supporting mechanism is installed on the rotary table of the refueling pipe movement mechanism; refueling pipe movement equipment is controlled to move to drive the refueling taper sleeve to move; when the refueling taper sleeve is near the head of the fuel receiver model, the position of the refueling taper sleeve is regulated to enable the refueling taper sleeve to be connected with the oil receiving pipe; two high-speed cameras collect each piece of test data in a connection process; and the PIV equipment is started to collect bow wave effect data in the connection process of the refueling taper sleeve and the fuel receiving taper pipe. By use of the device, a refueling process can be moretruly simulated so as to be favorable for better researching the quality of the refueling taper sleeve and the length and the rigidity of the refueling pipe, and especially researching the influence effect of different connection speeds for the refueling process.

The invention discloses a 3D-3C particle image velocity measurement system and method based on an integrated imaging technology. The system includes a laser, a laser beam expansion and collimation system, a 3D flow field velocity measurement box, a camera array, a computer, a plane calibration board, and a precision electronic control translation table. The method includes the following steps: putting the plane calibration board in the 3D flow field velocity measurement box to calibrate the camera array; putting a tracer particle in the 3D flow field velocity measurement box, and using the camera array to image the tracer particle at different angles; re-projecting a camera image of the camera array on a known plane in a world coordinate system Z to produce a refocus image; getting a refocus image sequence by changing the Z value at equal intervals, discretizing the refocus image sequence, and saving the gray values to discrete grids; and extracting tracer particle points in different depth regions through a method based on gradient transform of a moving window, determining the positions of the tracer particle points, and reconstructing a tracer particle field. The system and the method have the advantages of high precision and high computation speed, and can be used to highly restore the details of a flow field.

The invention aims to provide a single-frame particle imaging tachymeter suitable for a high-speed flow field and a speed measurement method. The single-frame particle imaging tachymeter includes a laser, a high-speed CCD camera, a synchronous controller, a particle generator, a sheet light source system, a test window and an image acquisition and analysis system, the synchronous controller is connected with the laser and the high-speed CCD camera, a test flow field is inside the test window, pulse laser generated by the laser is irradiated on the test window through the sheet light source system, the particle generator is connected with the test window, the high-speed CCD camera faces the test window, and the image acquisition and analysis system is connected with the high-speed CCD camera. The single-frame particle imaging tachymeter suitable for the high-speed flow field can well solve the problem of influence on measurement brought by the fact that a synchronizer is difficult to accurately control a pulse interval of a laser and a photographing interval of a high-speed CCD camera when a traditional PIV speed measurement system is applied to a high-speed flow field, and avoids the problem that related particles are searched from two images to perform speed calculation.

The present invention relates to an apparatus (100) for determining at least one electromagnetic quantity characterizing an electromagnetic property of an object, in particular a human body, wherein said object contains magnetic particles. The apparatus (100) applying the known principle of Magnetic Particle Imaging (MPI) comprises selection means for generating a magnetic selection field (50) having the known field pattern showing a field free point (FFP), drive means for changing the position in space of the FFP by means of a magnetic drive field, receiving means for acquiring detection signals depending on the magnetization of the magnetic particles within a field of view (28) and a reconstruction unit (152) for reconstructing a particle distribution quantity depending on the detection signals. The apparatus (100) further comprises a control unit (150) for controlling the receiving means for acquiring a first set of detection signals corresponding to a first drive field frequency and a second set of detection signals corresponding to a second drive field frequency, with both drive field frequencies differing from each other. The control unit (15) further controls the reconstruction unit (152) for reconstructing a first particle distribution quantity depending on the first set of detection signals and a second particle distribution quantity depending on the second set of detection signals. The apparatus (100) further comprises a determination unit (160) for determining the electromagnetic quantity depending on the first and second particle distribution quantity. The present invention further relates to a corresponding method as well as to a computer program.

A system for diluting a sample fluid sufficiently to enable the capture images of particles contained in the sample fluid. The system includes a fluid dilution system and a particle imaging system. The fluid dilution system includes a mixing conduit for combining a diluent and the sample solution. The mixing conduit is coupled to a flow chamber associated with imaging capturing devices including a camera. When the sample fluid is too opaque or viscous to enable capture of particle images of sufficient clarity, the fluid dilution system is activated to introduce diluent into the mixing conduit in sufficient volume to dilute the sample fluid. The diluted sample fluid is passed through the flow chamber and particle images captured. Information regarding captured images may be stored, analyzed and transferred from a remote location.

The invention discloses a discriminating method which is used for particles in an interference particle imaging system sampling area and applied to an interference particle imaging system, and belongs to the technical field of optical measurement. The method comprises the steps that the size range phit_min-phit_max of an interference fringe pattern in a flaky laser beam illumination area is derived according to an interference fringe pattern size calculation formula; an interference particle imaging experiment system is built, an interference particle fringe image is collected at the position, g away from the focal length, of the system, the actual interference fringe pattern size phie is obtained by processing the image, whether the particles are in the sampling area or not is judged, if phit_min<phi e<phit_max, the particles are in the sampling area, and otherwise, the particles are not in the sampling area; multiple images are collected, whether all the particles are in the sampling area or not is judged, experimental results are recorded, and experimental data is counted; particle field information such as the particle number density is calculated according to the experimental results. For judging whether the particles are in the interference particle imaging system sampling area, the novel method is supplied, and a strong basis is supplied to measurement of the particle concentration and the particle number density.