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1301results about How to "Expand the scope of use" patented technology

Multi-photon laser microscopy

A laser scanning microscope produces molecular excitation in a target material by simultaneous absorption of three or more photons to thereby provide intrinsic three-dimensional resolution. Fluorophores having single photon absorption in the short (ultraviolet or visible) wavelength range are excited by a beam of strongly focused subpicosecond pulses of laser light of relatively long (red or infrared) wavelength range. The fluorophores absorb at about one third, one fourth or even smaller fraction of the laser wavelength to produce fluorescent images of living cells and other microscopic objects. The fluorescent emission from the fluorophores increases cubicly, quarticly or even higher power law with the excitation intensity so that by focusing the laser light, fluorescence as well as photobleaching are confined to the vicinity of the focal plane. This feature provides depth of field resolution comparable to that produced by confocal laser scanning microscopes, and in addition reduces photobleaching and phototoxicity. Scanning of the laser beam by a laser scanning microscope, allows construction of images by collecting multi-photon excited fluorescence from each point in the scanned object while still satisfying the requirement for very high excitation intensity obtained by focusing the laser beam and by pulse time compressing the beam. The focused pulses also provide three-dimensional spatially resolved photochemistry which is particularly useful in photolytic release of caged effector molecules, marking a recording medium or in laser ablation or microsurgery. This invention refers explicitly to extensions of two-photon excitation where more than two photons are absorbed per excitation in this nonlinear microscopy.
Owner:WEBB WATT W +1

Positioning and locating device for radiotherapy and positioning method of dynamic target region

The invention discloses a positioning and locating device for radiotherapy and a positioning method of a dynamic target region. A therapy robot has an operating arm, wherein a compact linear electronic accelerator is arranged at one end of an operating arm of the therapy robot, and a secondary collimator is installed at one end of the compact linear electronic accelerator; a robot treatment table is arranged on a corresponding position of a double-image C-arm system, an C-arm sliding rail laser locator is arranged inside the double-image C-arm system, and a left side locator for an C-arm installation space is arranged on a corresponding position at the outer part of the double-image C-arm system. The positioning and locating device provided by the invention is provided with two groups of X-ray image systems, so as to realize binocular imaging; when the C-arm sliding rail rotates and a group of X-ray image systems is started, and CBCT (Cone Beam Computed Tomography) imaging can be realized; according to the positioning method, different imaging ways are adopted for a static target region and a dynamic target region, the rapidity and timeliness of the binocular imaging, the high quality, high definition and image registration of the CBCT imaging can be fully exerted.
Owner:RADIATION THERAPY MEDICAL SCI & TECH CO LTD

Method for directional cross-border detection and mixing line detection in video

The invention discloses a method for directional cross-border detection and mixing line detection in a video. The method includes the following steps of S1, inputting a monitoring video, S2, initializing the video, wherein the mixing line and an interesting region are set in the video, and the minimum filtering movement target area is selected according to the resolution ratio of the input video to be detected, S3, detecting the foreground, wherein movement targets are detected and tracked, and the movement target needing to be detected is filtered out, S4, carrying out mixing line detection or cross-border detection, wherein the cross-border detection comprises the two phenomena of intrusion detection and fleeing detection, S5, carrying out the S3 and the S4 repeatedly for every later new movement target. By means of the method for directional cross-border detection and mixing line detection in the video, the movement targets are filtered, targets which do not need to be detected such as birds and small animals are excluded, detection accuracy is improved, detections of leaving and the movement direction of the movement target can be achieved on the basis of mixing line detection and intrusion detection, detection is fully functional, and the method better meets actual application requirements.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Safe operation method for offline payment of electronic money

The present invention discloses a safe operation method for the offline payment of electronic money and belongs to the technical field of network security. According to the method, system parameters are initialized by a bank server, and a client interacts with the bank server to create an account. After that, the client verifies the identity thereof based on the zero-knowledge proof protocol to withdraw money. During the transaction process, the payment process between a gathering client and a paying client is realized in the privacy protection manner based on the zero-knowledge proof protocol again. When the gathering client receives an evidence of the electronic money, the gathering client interacts with the bank server in an anonymous manner based on the randomized protocol to change the electronic money or store the money in the bank. The safe operation method is applicable to mobile e-commerce environments with weak network signals, and protects the both-side privacies of both paying users and gathering users. The free domination of electronic money by gathering users is enabled, and the realistic money is perfectly simulated. Meanwhile, the functions of privacy, balance and incapable escape of crimes are realized. Therefore, the security of the e-commerce payment is ensured.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA

Substance content detection method, system and device based oncolordata analysis

The invention belongs to the field of content detection of color-changed substances, and specifically relates to a substance content detection method, system and devicebased on color data analysis. According to the technical scheme, the method mainly comprises the following steps: S1, creating a standard sample color database; S2, selecting color data corresponding to a certain amount of standard samples according to a detection result accuracy demand, and printing a plurality of color blocks; S3, shooting and frame the to-be-detected samples and the plurality of color blocks in onesame horizontal plane; S4, recognizing the color blocks inthe color the most close to the color data of the to-be-detected samples; and S5, finding out the substance content corresponding to the color blocks from the standard sample color database, and then defining to be the substance content in theto-be-detected sample. With the adoption of the method, the problems that a colourimetric card is used for visually comparing the color in case of little color difference, subjective factors highly influence the result, and the visual color difference comparing capability is limited, can be solved; the detection process is objective; the detecting accuracy is high; the field detection is convenient; the detection cost is low; and the result is accurate and clear.
Owner:UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD

Underwater stand pipe vortex induced vibration inhibiter adopting rotatable cowling

The invention discloses an underwater stand pipe vortex induced vibration inhibiter adopting a rotatable cowling, belonging to the technical field of ocean stand pipe facility laying. In the invention, the rotatable cowling capable of changing own direction along with the current flow direction is installed on an underwater stand pipe and comprises a pair of rotating modules, a cowling fixing pad and a cowling. The inhibiter is characterized in that the front part of the cowling is round, the rear part of the cowling is pointed, the surface of the cowling is smooth, and the shape of the cowling is similar to a water drop. The circular arc part of the cowling is coaxial to the stand pipe and is connected with a main pipe by the rotating module which is convenient to install and disassemble to cause the circular arc part to freely rotate around the stand pipe. A small-density buoyant material is added in the hollow part of the cowling, and the structural deformation and pivoting friction resistance brought by the asymmetric gravity of the cowling can be eliminated. Because of effectively inhibiting vortex induced vibration, the underwater stand pipe vortex induced vibration inhibiter can improve the fatigue resistance of the underwater stand pipe, thus greatly lowering the engineering cost. Meanwhile, the inhibiter overcomes limitation on incoming flow directions by various vortex induced vibration inhibiters, and has high application value in the environments with frequently changed flow directions of oceans, rivers and the like.
Owner:SHANGHAI JIAO TONG UNIV

System and method for flight control of automatic putting of unmanned aerial vehicle for mobile platform

The present invention provides a system and a method for flight control of automatic putting of an unmanned aerial vehicle for a mobile platform. The control system comprises an unmanned aerial vehicle and a mobile platform. The unmanned aerial vehicle is provided with an unmanned aerial vehicle airborne module and an airborne communication module, the unmanned aerial vehicle airborne module comprises an airborne location module, a flight control module, an embedded main control module, an image collection module, an image processing module, a distance measurement module and a putting module.The mobile platform is provided with a mobile platform vehicle module, a vehicle communication module, a vehicle location module and a location mark, and the location mark is arranged at the upper portion of the mobile platform. The present invention further discloses corresponding enforcement method. On the basis of fixed point targets based on image processing being subjected to the secondary location technology in the prior art, the system and the method add a collaborative module and a collaborative algorithm matchingly used with the collaborative module to push the automatic fixed point putting of the unmanned aerial vehicle to the put of the mobile platform of the unmanned aerial vehicle so as to enlarge the automatically controlled actual usage value of the unmanned aerial vehicle.
Owner:HENAN UNIVERSITY +1

Method for performing seismograph control and data transmission by using short message and short message control and transmission type cableless seismograph

The invention relates to a method for performing seismograph control and data transmission by using a short message and a short message control and transmission type cableless seismograph. Aiming at solving the problem of no real-time quality control to the prior cableless seismograph, the method for seismograph control and data transmission introduces a mobile phone unit into an acquisition station for the prior cableless seismograph, and utilizes the short message to conduct state control and data transmission to the acquisition station for the cable-less seismograph. The acquisition stationfor the cableless seismograph comprises a main control unit, an acquisition unit, a storage unit, a GPS unit, a power management control unit and a mobile phone unit. The invention has the advantagesthat the work load of measurement can be reduced, the laying of the acquisition equipment is more flexible, simpler and more convenient, the synchronous collection mode for blasting at the fixed timeis convenient, the construction efficiency is favorable for improving, the data recovery is flexible, an SPS file can be automatically generated, the coordinate with cm-level accuracy can be automatically calculated, the difficult problem of no real-time quality control to the cableless seismograph is solved in a simple and inexpensive way, and the application range and the construction efficiency of the cableless seismograph are greatly improved.
Owner:INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI

Automatic cleaning device for evaporating pot heat exchange tube

The invention discloses an automatic cleaning device for an evaporating pot heat exchange tube. The automatic cleaning device comprises a center column, a sliding fame driving mechanism, a machine frame portion, a machine frame wheel portion, a machine frame driving portion, a water pipe clamping wheel mechanism and a water pipe conveying mechanism; one end of the machine frame portion is hinged to the center column, the other end of the machine frame portion is connected with the machine frame wheel portion in a positioned mode, and the length of the machine frame portion can be changed by adding a connection machine frame portion; the machine frame driving mechanism is arranged a front machine frame of the machine frame portion and drives the machine frame portion to rotate around the center column, the sliding frame driving mechanism drives the water pipe clamping mechanism to slide on the side face of the machine frame portion, and the heat exchange tube is positioned in a polar coordinate mode; the water pipe conveying mechanism and the water pipe clamping mechanism are combined to achieving conveying and retracting of a water pipe. The automatic cleaning device for the evaporating pot heat exchange tube can achieve automatic cleaning, the length of the machine frame portion can be enlarged according to the size of an evaporating pot, no cleaning dead space exist in a cleaning range, and the phenomenon that machine frame wheels are blocked because of walking on the surface of an irregular evaporating pot can be avoided.
Owner:GUANGXI UNIV

Detection method for identifying material static mechanical property parameters in different areas of solder joints

A detection method for identifying material static mechanical property parameters in different areas of solder joints comprises the following steps of: (1) preparing a solder joint sample used for a hardness test; (2) selecting a plurality of points in the whole solder joint area along the direction of the solder joint diameter to carry out the hardness test, and regionalizing according to hardness number; (3) carrying out an indentation test in the regionalized areas to obtain a load-depth curve of different test points; (4) establishing a finite element model of the indentation test and verifying; (5) forming optimization mathematical models in different areas of the solder joints according to a simulation result of the finite element method numerical model in the indentation test and acorresponding experimental result; (6) calculating the static mechanical property parameters in different areas of the solder joints by the combination of genetic algorithm. The detection method provided by the invention has a simple principle, is convenient to operate, and can be used to determine local mechanical property parameters of a material with millimeter even micrometer dimensions and expand the application range of the indentation test.
Owner:HUNAN UNIV

Ultraviolet light/sunlight cured fluorine-free antifouling coating and preparation method thereof

The invention discloses an ultraviolet light/sunlight cured fluorine-free antifouling coating and a preparation method thereof. The preparation method is characterized in that firstly, the synthesis of a low surface energy prepolymer is performed; an isocyanate type compound and hydroxyl containing polysiloxane are uniformly mixed and are heated to 50 to 90 DEG C; a catalyst is added for reaction;a solvent and/or a reactive diluent are/is added; then, a hydroxyl containing acrylate monomer and a polymerization inhibitor are added; the temperature is maintained to be 50 to 90 DEG C; the reaction is performed for 0.5 to 4h; the low surface energy prepolymer is prepared; then, the reactive diluent or a photosensitive group containing urethane acrylate affixture is added into the low surfaceenergy prepolymer; a photoinitiator is added; through ultraviolet light curing or sunlight curing, the fluorine-free antifouling coating is obtained. The use of expensive fluorine-containing compoundsand fluorine-containing solvents is avoided; the coating can be cured under the room temperature condition; the ultraviolet light curing time is short; the production cost is effectively reduced; thecoating has excellent antifouling performance and is applicable to various substrates.
Owner:SOUTH CHINA UNIV OF TECH

Staggered spoke type stretchable tool for friction stir welding and adjusting method of tool

The invention discloses a staggered spoke type stretchable tool for friction stir welding. The staggered spoke type stretchable tool comprises a bearing, a bearing sleeve, a first supporting ring, a second supporting ring, a third supporting ring and a plurality of supporting plates, the bearing is used for connecting the spoke type tool with a cross-shaped operation machine type dislodgement machine, the bearing sleeve is rotationally arranged on the bearing in a sleeving manner, the first supporting ring is annular, an inner ring fixing sleeve is arranged on the bearing sleeve and can rotatealong with the bearing sleeve, the multiple first air cylinder assemblies are arranged on the outer ring of the first supporting ring and distributed on the outer side of the first supporting ring ina circumferential array equal-interval manner, the second supporting ring is annular, is concentric with the first supporting ring and is arranged on the outer side of the first supporting ring, a plurality of round holes are formed in the second supporting ring, air cylinders can penetrate the round holes, the supporting plates are arc-shaped plates, and the first air cylinder assemblies can bedetached to be far away from one end of the third supporting ring. The invention further discloses an adjusting method of the staggered spoke type stretchable tool for friction stir welding.
Owner:LIAONING UNIVERSITY OF TECHNOLOGY
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