45results about "Material analysis using wave/particle radiation" patented technology

Disclosed are methods for reconstructing a three-dimensional image of an object's volume of interest using computed tomography that employs conical-beam, intensity-modulated projections of this object. In one embodiment, a plurality of collimating devices serves to modulate the aperture of the radiation source thereby acting to modulate the intensity of the source upon the object. Also provided are image processing devices, examination apparatus, as well as a computer-readable medium and a program element adapted and configured to perform aspects of the methods disclosed herein.

A method and apparatus for terminal sterilization. The method orients a wall of a container in relation to at least one flashlamp, where the wall has an inner surface and an outer surface. The method creates a vortex in a fluid held by the container. The method generates from each flashlamp at least one pulse of high-intensity light in a broad spectrum and exposes the container to each pulse of high-intensity light.

A hazardous materials sensing robot includes a robot platform and a universal mounting tray on the robot platform for removably mounting thereon a plurality of sensors each having an output. An electronic interface unit is configured to receive the outputs of the sensors. An operator control unit remotely operates the robot platform. There is a communication link between the robot platform and the operator control unit for transmitting the sensor outputs to the operator control unit.

The present invention, called Color Spectral Imaging (CSI), generally pertains to a method of displaying colorized two-dimensional medical images of human anatomy. Specifically, the present invention pertains to a method of assigning predetermined range of colors to computed tomography images for enhanced visualization.

The present invention discloses a multi-channel aerosol scattering absorption measuring instrument, comprising a light path device, a detection device and a gas path device. The light path device supplies three different wavelengths of laser entering the detection device in sequence; the detection device is provided with photoelectric detectors at multiple angles for measurement, so as to reduce the measurement error of aerosol scattering coefficient; the gas path device comprises a sample loading unit, a calibration unit and a sample discharging unit; and a light source from the light path device and a gas flow from the gas path device enter the photoacoustic cavity of the detection device respectively and are detected by a control unit. The aerosol scattering absorption measuring instrument of the present invention is characterized by multi-channel, multi-angular, full-scale and direct measurement of scattering phase function and absorption coefficient of aerosol particles, combines the function of synchronously acquiring the optical parameters of an aerosol (such as scattering coefficient, extinction coefficient, visibility, transmittance, single scattering albedo, etc.), and achieves the integrated on-line detection of different optical parameters of an aerosol with high automation degree and good stability.

A method includes performing a three dimensional volume scan of a region of interest located in a portion of an object or subject in an examination region, including dynamically collimating a radiation beam used to perform the scan so that a geometry and/or location of the radiation beam tracks, during the scan, to a geometry and/or location of the region of interest, wherein the region of interest is a sub-region of the portion of the object or subject in the examination region.

A system and method to improve the quality of noisy computer tomography (CT) images that have been generated by a CT scanner running on low-power. The image noise is reduced by restoring crucial quantitative image information. The system does not fail when applied to sparsely-sampled and/or low-resolution projection data and is clinically viable in that it is a method that can be embodied in a practical, real-world system that can be used routinely in remote sites with limited access to electric power, and relies only on data that are available from standard medical CT scanners.

In a scanning electron microscope having the function of observing an attentional object on a specimen, an error in an in-focus position can be corrected at high speeds. When moving the field of view to an object to be observed on a specimen on which an electron beam is scanned, an error between an in-focus position indicated by a mechanism for measuring a height of surface of the specimen and an actual in-focus position is corrected on the basis of information concerning points which are among a plurality of measured points and are adjacent to the target observing point.

In an X-ray CT apparatus, an X-ray source and an X-ray detector mounted in a guide arm are freely movable in such a direction as to approach to and separate from a sample. With respect to this movement, the center of gravity of the whole containing respective constituent elements mounted in the guide arm is kept on the rotational axis by a weight balance adjusting mechanism. The weight balance adjusting mechanism contains a movable weight which is freely movable to the guide arm. The movement of the movable weight is controlled so that a difference between the rotational moment around the rotational axis is offset and substantially equal to zero. The moving passage of the movable weight is set on a straight line which is parallel to the moving direction of the X-ray source and the X-ray detector and does not pass through the rotational axis.

Projection TOF mass spectrum distribution information is acquired by irradiating a first ionizing beam onto a surface of a specimen to acquire first mass spectrum distribution information on secondary ions generated from the specimen, irradiating a second ionizing beam onto the same surface to acquire second mass spectrum distribution information on secondary ions generated from the specimen, and correcting the second mass spectrum distribution information on the basis of the first mass spectrum distribution information.

The present invention provides a three-dimensional calibrating measurement device for neutron diffraction stress analysis. The three-dimensional calibrating measurement device can move with multi-degree of freedom by utilizing a three-dimensional scanner matched with a sample table firstly; scanning images of samples on the sample table are collected into a computer for building a three-dimensional model of each sample; sub-net treatment is performed on each three-dimensional model, and each net grid is allocated with a unique identification; any target net grid is selected from the three-dimensional model in a manual or automatic mode, the movement of the sample table is controlled by a movement control program set in the computer, so as to enable an entrance slit to be aligned to the corresponding target net grid, at the same time, each diffraction slit, a corresponding collimator and a corresponding neutron detector move to corresponding positions, a neutron source emits a neutron beam, and neutron diffraction stress measurement is started. The three-dimensional calibrating measurement device can be used for achieving precise three-dimensional calibrating on the samples, is low in space requirement, and free of additional installation of datum mark light sources, avoids introduction of additional errors, and can reach the position accuracy up to 100 mu m for detected samples.

This invention relates to a medical X-ray device arrangement for producing three-dimensional information of an object in a medical X-ray imaging, the medical X-ray device arrangement comprising an X-ray source for X-radiating the object from at least two different directions and a detector for detecting the X-radiation to form projection data of the object. The medical X-ray device (5) arrangement comprises means (15) for utilizing said projection data in a regularized reconstruction method based on solving the non-linear evolution equation

∂_tφ(x, t)=−h(x, t)A*(A(f(φ(x, t)))−m)+αPφ(x, t)

to produce three-dimensional information of the object, x representing the coordinates inside the object under imaging, t representing time, φ representing a level set function indicating the boundary of the object, h representing a positive-valued function, m representing projection data, the operator A representing the X-radiation attenuation model, A* representing the backprojection operator of A, α representing a positive number, P representing high pass filtering, and f representing a cut-off function returning zero for non-positive arguments and positive values for positive arguments.

An x-ray optical filter includes at least one x-ray optical mirror configured to receive a plurality of x-rays having a first x-ray spectrum with a first intensity as a function of energy in a predetermined solid angle range and to separate at least some of the received x-rays by multilayer reflection or total external reflection into reflected x-rays and non-reflected x-rays and to form an x-ray beam including at least some of the reflected x-rays and/or at least some of the non-reflected x-rays. The x-ray beam has a second x-ray spectrum with a second intensity as a function of energy in the solid angle range, the second intensity greater than or equal to 50% of the first intensity across a first continuous energy range at least 3 keV wide, the second intensity less than or equal to 10% of the first intensity across a second continuous energy range at least 100 eV wide.

The invention relates to a tyre movement mechanism in X-ray tyre testing equipment. The invention belongs to the field of industrial nondestructive testing. The tyre movement mechanism comprises a tyre bracing execution mechanism, a tyre expending mechanism and a tyre rotating mechanism. The main body of the tyre bracing execution mechanism comprises two sets of gears arranged symmetrically, wherein the two sets of gears operate independently relative to each other. Each set of gears comprises a driving gear, a first driven gear, and a second driven gear. The first driven gears and the second driven gears operate under the driving of the driving gears. Tyre bracing tumblers are fixed on the first driven gears and the second driven gears. Cantilever supporting assemblies are arranged on the tyre bracing tumblers. Transmission sleeves are fixed on end faces of rotation sleeves. Tangential circle profile connection transmission is carried out between tyre bracing shafts and the transmission sleeves. With the mechanism provided by the invention, the smooth and stable operation of the tyre bracing tumblers is ensured, the testing precision is high, the processing cost is low, and the installation and adjustment are simple. The mechanism is suitable to be used for testing tyres with different sizes.

The invention discloses a dual spectrum technology based leaf and stalk separating and cutting quality detection device and detection method. The detection device comprises a spreading device (1), a paving machine (2) arranged under the spreading device (1), an X ray detector (3) arranged under the paving machine (2), a visible light detector (4) arranged under the outlet of the X ray detector (3), a receiving device (6), a frame (5), and a control cabinet (7). The receiving device (6), the frame (5), and the control cabinet (7) are arranged under the outlet of the visible light detector (4).By adopting a visible light and X ray imaging technology and corresponding image algorithm, the tobacco leaf area, tobacco stalk area, and tobacco stalk length can be obtained; the leaves and stalks in a same image do not need to be separated, and the identification accuracy of image detection is improved. The leaf structure and long stalk rate can be detected, the stalk containing rate of leavesand leaf containing rate of stalks can be detected, the stalk density and leaf density are not needed during the index calculation process, and the leaf cutting quality indexes can be automatically calculated out.

The invention relates to a molecular-level-based rock micro-structure and property research method which comprises the following steps of: obtaining main mineral components of rock through an X-ray diffraction test so as to obtain a crystal structure of the main mineral components of the rock; then calculating chemical bond parameters of the main mineral crystals, analyzing and verifying a calculation result, calculating elastic parameters of the mineral crystals, and analyzing and verifying the calculation result; and carrying out correlation analysis according to chemical bonds and elastic parameters of the mineral crystals. According to the research method provided by the invention, the microscopic characteristics of the rock are researched from the molecular level, and a theoretical basis is provided for revealing the microscopic essential mechanism of the macroscopic physical and mechanical properties of the rock. Research results not only provide theoretical support for rock engineering and slope reinforcement engineering, but also have important significance for stone cultural relic protection.

The invention discloses a method for preparing speckles, a material with speckles, and a test method of the material. The method for preparing the speckles disclosed by the invention comprises the following steps: attaching a silver film as a speckle precursor on a specified surface of a target speckle carrier; immersing the carrier with the silver film in an electrolyte solution containing chloride ions to transform the silver film into silver nano-speckle particles dispersed on the specified surface; and constituting target speckles by the silver nano-speckle particles dispersed on the specified surface. The method for preparing the speckles is simple and convenient to operate, and has a low cost; the effect of the prepared speckles on the specified surface of the carrier is controllable, which easily meets the requirements of an EBSD test; and the particle sizes of the nano-speckle particles meet the requirements of high-resolution DIC, the particle sizes of the nano-speckle particles are uniform, and the distribution uniformity is easy to control.

A method for producing a capsule for protein crystallization is provided. The method comprises adding a solution containing a protein and a gelling agent to an ionic cross-linking solution to form an ionically cross-linked gel capsule that encapsulates a solution of the protein.

The invention relates to a characterization method for the strengthening phase of a ferromagnetic alloy block and/or film. An optimum scheme includes: separating a strengthening phase of nano to micron size in a ferromagnetic alloy from an alloy matrix to obtain an electrolyte solution containing the strengthening phase; then conducting dilution by anhydrous ethanol and ultrasonic dispersion, thendripping the obtained solution to an ultra-thin carbon support film, and performing drying to obtain an electron microscope sample; and then using an electron microscope for structural observation and characterization. The method provided by the invention can characterize the morphology and structure of the strengthening phase less than 0.5micron in the ferromagnetic alloy, especially the strengthening phase less than 50nm in size. The strengthening phase separated by the method provided by the invention retains the original structure of the strengthening phase, and the method has the advantages of simplicity and high efficiency, easily available electrolytic conditions, simple operation and strong repeatability, and can be used for analysis and characterization of strengthening phases invarious ferromagnetic materials. The method provided by the invention effectively avoids the adverse effects of ferromagnetic alloy matrixes on electron microscope equipment and the detection process, and realizes the TEM/HRTEM structural characterization of the ferromagnetic alloy strengthening phase.

A detector module for a radiation detector is disclosed. In at least one embodiment, the detector module includes a converter layer with contacts, arranged distributed over an area on the rear side, for transmitting electrical signals, wherein the contacts are routed, by way of rewiring, to target contacts on a target region that is smaller than this area. This provides the conditions for simple and secure signal routing between the contacts on the converter layer and readout electronics. In particular, this is successful if a substrate layer used for stabilization purposes has a cutout for the target region, through which cutout the target contacts are directly connected to the signal-routing lines of readout electronics.

A chopper wheel assembly includes a collimator configured to narrow an x-ray beam, a chopper wheel has a planar surface configured to face in a direction of the collimator and a housing configured to receive the chopper wheel. The chopper wheel includes a central axis, a plurality of slits in the planar surface, a first projection extending from the planar surface in a direction of the collimator and a second projection extending from the planar surface in the direction of the collimator. The slits extend in radially-outward direction relative to the central axis. The first projection is located radially outward of the plurality of slits and the second projection is located radially inward of the plurality of slits. Each projection is provided for 360 degrees about the central axis. The housing includes an interior wall including a first groove configured to receive the first projection and a second groove configured to receive the second projection with the chopper wheel received within the housing.

The invention is a kind of neutron phase contrast chromatographic imaging equipment, including rotational platform, sparkling body, aluminium mirror, CCD camera, comuputer and camera bellows, the sparkling body, aluminium mirror and CCD camera placed in the camera bellows, and the neutron beam reaches the sample placed on the platform, the produced diffractive neutron makes vertical incidence andis received by the sparkling body and converted into the visible light with the sample information, which then is reflected onto the CCD camera by the aluminium mirror and after digital conversion inputted into the computer.

The invention belongs to the technical field of scanning electron microscopes, particularly relates to a cryoelectron microscope sample transfer system and method and electronic equipment, and aims to solve the problem that a cryoelectron microscope sample changes in the transfer process. The system comprises a master control center, a transfer table base, a transfer device, a transmission rod, a moving device, a rotating device and a vacuum docking mechanism. The moving device comprises a first power device, a first transmission assembly, a transmission lead screw, a transfer rod sliding rail, a moving sliding block and a limiting sliding block. The rotating device comprises a second power device and a second transmission assembly; a moving assembly composed of a moving sliding block, a limiting sliding block and a transmission rod moves to the transmission rod to be in butt joint with the transfer device, and the limiting sliding block and a second transmission assembly are locked; a rotating assembly composed of a transmission rod, a limiting sliding block and a second transmission assembly rotates to the transmission rod and is locked with the transfer device; the transfer device and the moving assembly move to the vacuum docking mechanism; the structure and the property of the sample are effectively prevented from being changed in the transfer process.

The invention discloses a preparation method for solar blind type deep ultraviolet plasma resonance nanoparticles. A laser liquid phase ablation device is adopted. A laser liquid phase ablation methodis used for preparing metal nanoparticles with a local area surface plasma resonance effect; the preparation method is simple; and a reaction product is pure, so that impurities are not easily introduced. Ascorbic acid is introduced as a carbon source, so that the metal nanoparticles can be wrapped with a carbon layer with a certain thickness, and the stability and oxidation resistance of the product can be effectively improved. The experimental controllability is high. By adjusting laser energy and ablation time, the particle size and the oxidation degree of the metal nanoparticles can be regulated and controlled. The prepared metal nanoparticles can be used for enhancing the light absorption of light (240-260nm) in the extremely deep ultraviolet waveband.

The invention relates to the technical field of scanning cameras, and particularly relates to a scanning camera gear shifting device and a scanning camera. The scanning camera gear shifting device comprises a base, a driving piece, a gear shifting mechanism and a connecting piece for connecting the driving piece and the gear shifting mechanism, wherein the driving piece and the gear shifting mechanism are installed on the base; the driving piece can drive the gear shifting mechanism to move and shift gears in the first direction through the connecting piece; the gear shifting mechanism is provided with a first circuit board, the first circuit board is provided with multiple sets of contacts arranged in the first direction, each set of contacts comprises a positive electrode contact and a negative electrode contact, and when the gear shifting mechanism moves to a gear point, at least one set of positive electrode contact and negative electrode contact can be connected with the second circuit board. According to the invention, the risk of oscillation echo of pulse signals in the second circuit board can be reduced, and the quality of the output pulse signals is improved.

The invention discloses a method for monitoring and treating chlorine in a cement clinker production system for co-treating waste incineration fly ash and the cement clinker production system, and belongs to the technical field of environmental protection. The chlorine monitoring and disposal method is based on a cement clinker production system, and comprises the following steps: respectively detecting the chlorine ion content of hot raw materials and the chlorine ion content of cement clinker in a cement kiln system; by adjusting and controlling the technological parameters of the cement kiln system and/or the air discharge amount of the bypass air discharge device, the chloride ion circulation ratio in the cement kiln system is accurately controlled to be maintained within the range of 50-500, it can be guaranteed that the operation state of the cement kiln system is good and stable, and the influence of chlorine elements on the yield and quality of cement clinker is avoided; and a potassium chloride product with high economic value can be obtained.

The invention relates to the technical field of robots, in particular to a path planning method, system and equipment for planning a surgical path and a medium. The method comprises the following steps: according to a three-dimensional model of an object tissue of an object to be treated, determining a plurality of initial planning paths from a starting point of the three-dimensional model to a region to be operated, wherein the region to be operated is determined based on to-be-operated tissues in corresponding object tissues in the three-dimensional model; and selecting a target planning path from the multiple initial planning paths, wherein the selected target planning path comprises at least one preset spatial feature. By adopting the method, the accuracy of path planning can be improved.

The invention provides a high-power millimeter wave output window testing and aging device, which comprises a high-power millimeter wave source, an absorption load, a reflection grating, a dielectric window sheet, a reflector M1 and a reflector M2; the metal reflection grating is used for performing beam splitting on high-power electromagnetic waves propagating in a quasi-Gaussian mode, and a part of wave beams are extracted to form a traveling wave resonant ring; the traveling wave resonant ring is adjusted to work in a resonant state, so that the dielectric constant of the dielectric window sheet is calculated; meanwhile, the dielectric window sheet is screened and aged under the condition that the equivalent power is higher than that of a microwave source by utilizing the gain effect of the traveling wave resonant ring. Parameter measurement can be directly carried out on a dielectric window sheet or a dielectric window assembly which is actually used under a high-power condition, and a measurement result better accords with an actual condition; screening of qualified window sheets can be achieved, and window sheets which have defects and cannot be improved are removed; the window can be aged under the condition that the equivalent power is higher than the output power of a microwave source, and the power capacity of the window is improved.