312results about How to "Reduce Radiation Damage" patented technology

A robot aided surgical system for the bone setting operation with the locking intramedullary nail is composed of multifunctional automatic operation bed, robot, bone setting regulator on said robot, bone fixing mechanism, high-accuracy full-automatic X-ray machine with C-shaped arm, navigation robot, robot controller, master hand control station, and slave hand control station.

This invention comprises photodiodes, optionally organized in the form of an array, including p+ deep diffused regions or p+ and n+ deep diffused regions. More specifically, the invention permits one to fabricate thin 4 inch and 6 inch wafer using the physical support provided by a n+ deep diffused layer and / or p+ deep diffused layer. Consequently, the present invention delivers high device performances, such as low crosstalk, low radiation damage, high speed, low leakage dark current, and high speed, using a thin active layer.

Scintillator compositions having a garnet crystal structure useful for the detection of high-energy radiation, such as X, beta, and gamma radiation, contain (1) at least one of terbium and lutetium; (2) at least one rare earth metal; and (3) at least one of Al, Ga, and In. Terbium or lutetium may be partially substituted with Y, La, Gd, and Yb. In particular, the scintillator composition contains both terbium and lutetium. The scintillators are characterized by high light output, reduced afterglow, short decay time, and high X-ray stopping power.

A spine image generating system based on an ultrasonic rubbing technology comprises a collecting unit and a processing unit. Ultrasonic rubbings are generated by the system based on ultrasonic imageswith two-dimensional spine surface structure characteristic outlines, and matched with a digital medical image outline, and thus a personalized spine surface topographic map which is consistent with an intraoperative position of a patient and updated in real time is obtained. A spine surgical navigation positioning system based on the spine image generating system comprises a navigation module andthe spine image generating system based on the ultrasonic rubbing technology. The spine surgical navigation positioning system can obtain the spine surface topographic map which is consistent with the intraoperative position of the patient and updated in real time, and can conduct real-time intraoperative navigation based on the spine surface topographic map. The spine image generating system based on the ultrasonic rubbing technology and the spine surgical navigation positioning system can greatly reduce the difficulty of a spinal operation, can achieve the operation auxiliary purposes of precise and nonradiative guided puncture, real-time navigation and being simple, convenient and reliable, and are particularly beneficial for application and popularization of a spinal minimally invasive surgery technology which is represented by a spine endoscopy to primary health care institutions.

A gutter protector for keeping debris and insects out of the interior of a gutter comprises a plurality of flexible elongated gutter protector members formed of a porous open-cell foam, the foam incorporating therein an anti-microbial agent and a UV inhibitor. The members are formed in sections of predetermined length that are shaped to fit in predetermined gutter shapes. Each member has a recessed portion in a lower side that is spaced away from the gutter. The recessed portion is substantially isolated from the exterior of the protector member so as to permit water to flow unobstructed through the gutter without admitting insects to the interior of the recessed portion. For a conventional gutter shape, the gutter protector desirably has a generally right triangular cross section with a flat top and a tapered edge that fits under a front lip of the gutter.

The invention belongs to the field of application of near-infrared laser, nuclear irradiation, electron and image rebuild in systematic biology and medicine. It is characterized in that high-specificity nuclear species and fluorescent probe are implanted in live animal to realize double mark of muscle deep layer or internal organ tumor cell. The emission signal of nuclear species is checked by sensitive electron-multiplier phototube in array copulation position of scintillation crystal; feeble fluorescent signal generated by visible light or infrared agitation is checked by high quantum yield CCD camera. The two checking systems are orthogonally arranged in the same surface, the live nuclear species and fluorescent signal can be checked simultaneously through rotary image cavity, and double module three dimensional tomography image of small animal can be rebuilt with software algorism. The invention is characterized by multi-image forming modules, abundant information and simple operation.

This invention discloses a computer assistant far end locking system of nail in marrow, including C-typed arm, positioning frame, computer and software of image controlling operation. The image collected by the X-ray imaging device on the C-type arm is transmitted by visual data line to the computer and calcualted and processed by the software of image controlling operation so as to determine the route of the operation, then the operation can be performed. The invention combines a plural subjects and technologies such as medicine, mechanics, computer visual sense and digital image process, etc, achieves the key technique of measurement of position of nail in marrow using single image and simplifies complicated operating process of fixing the nail in marrow in pure mechanical method.

Sample inspection apparatus, sample inspection method, and sample inspection system are offered which can give a stimulus to a sample held on a film when the sample is inspected by irradiating it with a primary beam (e.g., an electron beam or other charged-particle beam) via the film. The apparatus has the film, a vacuum chamber, primary beam irradiation column, signal detector, and a controller for controlling the operations of the beam irradiation column and signal detector. The sample is held on a first surface of the film opened to permit access to the film. The vacuum chamber reduces the pressure of the ambient in contact with a second surface of the film. The irradiation column irradiates the sample with the primary beam via the film from the second surface side. The detector detects a secondary signal produced from the sample in response to the irradiation.

This invention comprises photodiodes, optionally organized in the form of an array, including p+ deep diffused regions or p+ and n+ deep diffused regions. More specifically, the invention permits one to fabricate thin 4 inch and 6 inch wafer using the physical support provided by a n+ deep diffused layer and / or p+ deep diffused layer. Consequently, the present invention delivers high device performances, such as low crosstalk, low radiation damage, high speed, low leakage dark current, and high speed, using a thin active layer.

The invention relates to a non-equilibrium magnetron sputtering film depositing device of a cusped magnetic field for restricting ICP enhancing ionization which belongs to the plasm film depositing technique field. The device has characteristic that a main body of the device is a non-equilibrium magnetic control; ICP enhance ionization discharge is added between the non-equilibrium magnetic control sputter target for increasing ionization degree of the magnetic control sputter product; three rings annular permanent magnets are added under the non-equilibrium magnetic control sputter target and is closed with the non-equilibrium magnetic control sputter magnetic field for generating a close magnetic field distribution along a discharge chamber wall which can restrict discharge plasm efficiently, increase ionization degree of the magnetic control sputter product and improve uniformity of discharge plasm space distribution. The device has advantages that the device can prepare a film with high quality based on improving density and space distribution uniformity of the non-equilibrium magnetic control sputter discharge plasm.

The invention discloses a bend-insensitive radiation-resistant single-mode fiber and relates to the field of a single-mode fiber. The single-mode fiber comprises a core layer, an inner wrapping layer and an outer wrapping layer, which are arranged in sequence from the inside out. The core layer, the inner wrapping layer and the outer wrapping layer are made of quartz material. The inner wrapping layer comprises a first fluorine-doped inner wrapping layer and a second fluorine-doped inner wrapping layer arranged in sequence from the inside out. The core layer and the first fluorine-doped inner wrapping layer are germanium-undoped, and other metal impurities and phosphorus concentration are lower than 0.1 ppm; in mass percent, the doped fluorine content in the core layer is 0-0.45%, and chlorine content is 0.01%-0.10 %; fluorine content in the first fluorine-doped inner wrapping layer is 1.00%-1.55%; and the fluorine content in the second fluorine-doped inner wrapping layer is 3.03%-5.00%. Compared with an existing radiation-resistant single-mode fiber, additional loss of the single-mode fiber under a bending state is greatly reduced, and bending-resistant performance thereof is better, that is, the single-mode fiber is insensitive to bend; and meanwhile, the radiation-resistant capability of the single-mode fiber is better.

The invention provides a method for adjusting radiation. The method for adjusting radiation is applied to a mobile terminal, and the method comprises the following steps: making response to the occurrence of a radiation event, and determining a radio frequency transmitting antenna supported by the mobile terminal on a frequency band where the mobile terminal is working at present according to the radiation event; obtaining a preset power value corresponding to the radio frequency transmitting power of the determined antenna; and controlling the determined antenna to transmit power according to the obtained preset power value. The invention further provides an apparatus for adjusting radiation. Different antennas are controlled to transmit power at a power value not exceeding the maximum limited power value according to the radiation event of the mobile terminal, and the human body radiation SAR of the mobile terminal designed by multiple antennas is dynamically adjusted to reduce the human body radiation.

The invention discloses a CT machine. The CT machine comprises a CT rack and a vertical elevating mechanism, wherein the CT rack is installed on the vertical elevating mechanism in such a mode that a scanning plane of the CT rack is parallel to the ground or is approximately parallel to the ground, and the vertical elevating mechanism can drive the CT rack to perform vertical elevating motion. According to the CT machine, CT scanning of a patient can be performed when the patient is in a standing state, on one hand, no hospital bed is required and the radiation injury to the patient is reduced, and on the other hand, the CT scanning and imaging quality of sickness areas which have special requirements for imaging is guaranteed.

The invention provides a CT scan perfusion method and device. The method includes the following steps: after a prescribed time t1 has passed since injection of a contrast agent, carrying out a single-slice CT tracking scan of the contrast agent concentration in the artery with a first radiation dosage; during scan tracking, trigging a scan program when a trigger point is reached, and carrying out an arterial phase scan of a visceral organ at a time t2 with a second radiation dosage, which is larger than the first radiation dosage, so as to obtain an arterial phase CT value; obtaining a CT value increment according to the arterial phase CT value; setting a time density curve of the contrast agent in the artery as an arterial input function during the contrast agent scan tracking process, and obtaining the blood flow volume of the visceral organ according to the arterial input function and the CT value increment. The CT scan perfusion method avoids repeated scans of the visceral organ in the traditional method, so as to reduce radiation on a human body, achieve simpler and easier operations and accurate results, and lessen the discomfort of an examinee.

The invention discloses a novel driving lens. A purpose of alleviating the irritation of sunlight and ultraviolet rays at daytime and improving the light sensation and blocking the high light in the opposite direction at night and in the dim light environment can be achieved. By adopting the driving lens, on the premise of guaranteeing the resolution of a signal lamp, an effect for enhancing the dim light, inhibiting the high light, clarifying the sight and facilitating the brightness and comfort in the middle-near distance can be achieved; the control is carried out by virtue of wavelength transmittance in the manufacture process, so that the range of the visible light wavelength is narrowed relatively, and more clarity of an object contour can be realized to a certain extent; meanwhile, a plating film is specially designed in the manufacture process, the radiation harm of an electromagnetic device inside a car for eyes of people can be alleviated, and the direct harm of ultraviolet rays and blue light and the indirect harm of the ultraviolet rays and blue light on the eyes of people by virtue of secondary reflection of the skin and lens can be alleviated.

The invention provides a ball stopper applied to a high-temperature gas-cooled reactor. The ball stopper comprises a box body assembly, a power part, a magnetic transmission device, a rotor assembly and a shield, wherein the box body assembly comprises a box body with ball through holes and a rotor sink hole in the surface, as well as a ball inlet pipe and a ball outlet pipe which are connected with the box body; the ball through holes, the ball inlet pipe and the ball outlet pipe are coaxial and isometric and are perpendicular to the rotor sink hole; the rotor assembly comprises a bearing and a rotor; the rotor is supported in the rotor sink hole of the box body through the bearing and connected with an inner magnetic assembly of the magnetic transmission device; the rotor is provided with a rotor through hole; the diameter of the rotor through hole is the same as that of each of the ball through holes, the ball inlet pipe and the ball outlet pipe and is greater than that of a spherical element; the shield is connected with a bracket of the magnetic transmission device; the power part is arranged in the shield and connected with the bracket of the magnetic transmission device through a shaft coupler assembly. According to the ball stopper, the stopping and running functions can be performed on single column of spherical elements, and the operating reliability requirements of long-term intermittent running can be met.

The invention provides a high-gradient strong magnetic field horizontal composite magnetism-converging roller, which comprises a magnetic roller mandrel and a magnetic yoke drum on the magnetic roller mandrel, wherein the magnetic yoke drum is provided with primary dovetail grooves which are axially arranged in parallel and are used for fixing double dovetail shaped permanent magnetic strips; each double dovetail shaped permanent magnetic strip is formed by combining an upper dovetail shaped part and a lower dovetail shaped part; the lower dovetail shaped part is embedded in each primary dovetail groove; the upper dovetail shaped part extends out of each primary dovetail groove; a secondary dovetail groove is formed between adjacent upper dovetail shaped parts; a single dovetail shaped permanent magnetic strip is embedded in each secondary dovetail groove; magnetic poles of the single and double dovetail shaped permanent magnetic strips are positioned on two sides of dovetail shaped sections of the single and double dovetail shaped permanent magnetic strips; and the single dovetail permanent magnetic strip has the same magnetic polarity as adjacent double dovetail shaped permanent magnetic strips on both sides. The high-gradient strong magnetic field horizontal composite magnetism-converging roller can sufficiently play the effect of all magnetism peaks in a magnetic system combination, effectively improve ore dressing grade and yield, and has the advantages of simple structure, easy manufacture, safety and reliability and long service. The roller is applicable to a common magnetic extractor, and is particularly applicable to a magnetic extractor with a super-large diameter magnetism-collecting roller so as to multiply capability of ore dressing.

A thermion-photoelectric-thermoelectricity combined type isotope cell comprises a radioactive source and an energy transition structure; two ends of the energy transition structure are respectively assembled with a cell anode and a cell cathode; the energy transition structure comprises an emission pole plate, a filling medium and a transparent charge collection plate arranged in sequence from inside-out and compactly stacked; the emission pole plate is arranged on the radioactive source side surface; the energy transition structure also comprises a first transparent insulation substrate, a photoelectric assembly, a second transparent insulation substrate and a thermoelectricity assembly arranged in sequence from inside-out and compactly stacked, wherein the first transparent insulation substrate is arranged on the transparent charge collection plate side surface; two ends of the photoelectric assembly are provided with a first electricity output electrode; two ends of the thermoelectricity assembly are provided with a second electricity output electrode; the energy transition structure side surface and cell anode and cathode on two ends are wrapped by a buffer pad; an inner package and an outer package heat radiation layers are arranged on the outer surface of the buffer pad. The thermion-photoelectric-thermoelectricity combined type isotope cell is high in energy conversion efficiency, large in output power, strong in environment applicability, good in work stability, and long in service life.

The invention provides a device for monitoring the state of a mobile phone in real time, wherein the device comprises a displaying unit which is used to display information, an input unit which is used to input an operating instruction of a user and send to a processing unit, a storing unit which is used to store data document, and the processing unit which is used to process data and execute the operating instruction which is input by the user. The device is characterized in that the device also comprises at least a communicating unit, wherein the device is mutually communicated with the mobile phone through a communicating unit, and state information of the mobile phone can be displayed in real time through the displaying unit. A mobile phone user can conveniently accurately monitor the state of the mobile phone through the device, and further operate the mobile phone.

The invention is applicable to the technical field of security check and provides a terahertz imaging system and a terahertz security device. The terahertz imaging system comprises a terahertz radiation module, an optical chopper, an imaging objective lens, a light-sensitive surface, a terahertz detection module and a signal processing module; the optical chopper is used for modulating terahertz wave radiated by the terahertz radiation module into terahertz wave with default frequency and radiating the terahertz wave to a to-be-detected object in a covering manner; the imaging objective lens is used for focusing the terahertz wave carried with complex dielectric function information of the to-be-detected object on a focal plane of an image space; the minimal edge length of the light-sensitive surface is greater than or equal to the maximum edge length of an imaging region of the imaging objective lens, and the terahertz detection module is used for converting the terahertz wave carried with the complex dielectric function information into an analog current signal; the signal processing module is connected with the terahertz detection module. By the arrangement, nondestructive detection can be performed on human body or biological tissue, radiation injury can be reduced, complete detection data of the to-be-detected object can be acquired by one radiation, detection efficiency is improved, and high-risk items of metal, poison, explosive and the like can be effectively identified.

The present invention belongs to the technique category of the medical instrument, relates to a tectorial conformal radiate NiTi alloy vascular inner rack which is implanted to the blood vessel of the human body. To settle the problems of that the existing vascular inner rack can not restrain the growth of the tumour and the thrombus is easy to form, etc., the bracket used by the invention is self-expanding NiTi alloy vascular inner rack, a layer of polycarbonate type polyurethane membrane is covered at the inner wall, the antineoplastic medicine is spraying-coated to the inner surface of the membrane, and the active particles which are used for the inner radiating of the tumour are inserted at the outer bracket of the membrane according to the conformal property. The NiTi alloy vascular inner rack applied by the invention can effectively expand and support the blood vessel; the novel film forming material polycarbonate type polyurethane has an excellent bioavailability; the active particles for the conformal radiotheraphy outside the membrane are inserted to the bracket with a simple and convenient double-buckle mode, the growth surround the blood vessel area is effectively restrained and the radioactive side injury of the normal tissue is reduced. The invention has the advantages of easy making, low cost, strong innovation and wide market prospect.

Sample inspection apparatus, sample inspection method, and sample inspection system are offered which can give a stimulus to a sample held on a film when the sample is inspected by irradiating it with a primary beam (e.g., an electron beam or other charged-particle beam) via the film. The apparatus has the film, a vacuum chamber, primary beam irradiation column, signal detector, and a controller for controlling the operations of the beam irradiation column and signal detector. The sample is held on a first surface of the film opened to permit access to the film. The vacuum chamber reduces the pressure of the ambient in contact with a second surface of the film. The irradiation column irradiates the sample with the primary beam via the film from the second surface side. The detector detects a secondary signal produced from the sample in response to the irradiation.

The invention discloses a green preparation method of sea urchin shaped nanogold and application of the nanogold in tumor imaging and treatment. Chloroauric acid is mainly used as a gold source, a stabilizer, a reducing agent and a growth inhibitor are successively added, and the nanogold is prepared by adopting a one-step synthesis method. The method is simple, mild, green and friendly to the environment. The synthesized sea urchin shaped nanogold can serve as a contrast agent to be applied to multiple medical imaging modes such as opto-acoustic imaging (PA), positron emission computed tomography imaging (PET) and infrared thermal imaging (TI), patients can obtain multiple diagnostic effects only by needing to bear one contrast agent for dose, the dosage of contrast agent can be reduced, and the toxic and side effects are thus reduced. In addition, the material can achieve conversion of light and heat under near-infrared light irradiation of 808 nm, can absorb a large number of X rays, has higher light-heat conversion efficiency, and can be used for the preparation of a therapeutic agent for light and heat treatment (PTT), radiotherapy (RT), or combined therapy of PTT / RT of tumor cells.

The invention relates to a positioning device for distal locking of an intramedullary nail. The positioning device comprises a positioning mechanism and an adjusting mechanism, wherein the positioning mechanism comprises a first positioning ring and a second positioning ring which are arranged at intervals and are concentrically arranged; a guide needle penetrates through the first positioning ring and the second positioning ring in sequence and is positioned by the first positioning ring and the second positioning ring; the adjusting mechanism comprises a longitudinal rotation assembly used for rotating around a longitudinal axis so as to drive the positioning mechanism to rotate around the longitudinal axis, a transverse rotation assembly used for rotating around a transverse axis so as to drive the positioning mechanism to rotate around the transverse axis, a longitudinal translational component used for driving the positioning mechanism to move along the longitudinal direction and a transverse translational component used for driving the positioning mechanism to move along the transverse direction; the positioning mechanism is detachably or fixedly connected to at least one of the four components; an intersection of the longitudinal axis and the transverse axis is arranged on a connection line of a circle center of the first positioning ring and a circle center of the second positioning ring; an included angle is formed between the plane formed by the longitudinal direction and the transverse direction and the penetrating path of the guide needle. The positioning device is capable of assisting a doctor to quickly and accurately positioning far-end lock holes under the conditions without extra iatrogenic wounds and low radiation frequency.

The invention discloses a bone malformation correction or fracture reduction and fixation device and a method for processing the same. The bone malformation correction or fracture reduction and fixation device comprises external fixation brackets or one and more external fixation plates, wherein the external fixation brackets or the external fixation plates are used for fixing fixation needles inserted into the bone tissues; at least one end of each fixation needle is exposed outside the skin, and the exposed end of the fixation needle needs to be fixed; the external fixation brackets consist of a first fixation bracket and a second fixation bracket; the external fixation plates are used for fixing all the fixation needles inserted into the bone tissues needing to be fixed. The method for processing the bone malformation correction or fracture reduction and fixation device comprises the following steps of: (1) collecting the information of an image before reducing the bone; (2) reducing the bone virtually by using a computer; (3) designing the structure of the bone malformation correction or fracture reduction and fixation device; and (4) processing the bone malformation correction or fracture reduction and fixation device. The bone malformation correction or fracture reduction and fixation device provided by the invention has a function of automatically reducing the bone, is reasonable in structure, has a good bone fixing effect and can be used for effectively overcoming the defects of difficult bone malformation correction or fracture reduction, complex operation on malformed or fractured bone and excessive dependence on the clinical experience of a doctor of the existing bone malformation correction or fracture reduction and fixation mode.

The invention discloses rose flower tea capable of scenting a body, and relates to the technical field of food and beverage. Green tea is used as the main raw material, for eliminating free radicals of human body, delaying aging of cells, and enhancing the immunity of organisms; rose flower, jasmine flower, lemon grass and sweet osmanthus are used as the auxiliary materials for activating blood, beautifying skin, scenting body, nourishing face, clearing heat, detoxifying, clearing heat from throat, relieving damage to throat, and delaying aging; lavender is used as the accessory material for realizing favorable fragrance, soothing nerves and promoting sleepiness. The tea has the advantages that the tea is prepared by mixing the tea, the flowers and the grass, so the taste is unique, and the appearance of traditional green tea is maintained; the effective ingredients of the rose flower, the jasmine flower, the lemon grass, the sweet osmanthus and the lavender are quickly dissolved into the tea soup, so after the tea is drunk frequently, the human body can emit the slight fragrance, and the fragrance is natural, lasting and charming; the tea is a favorable beverage for men, women, the young and the old at all seasons.

Apparatus and methods for performing small angle X-ray scattering (SAXS) at low (cryogenic) temperatures for determining the structure of and changes in the structure of proteins, DNA, RNA, and other biological molecules and biomolecular assemblies and structures. A cryogenic, small angle X-ray scattering (SAXS) application sample holder, includes a sample cell including a base portion and at least two parallel walls disposed on the base, wherein the sample cell has a liquid volume capacity defined by the walls and the base portion of 0.001 to 10 microliters. A method for performing cryogenic SAXS on a sample includes the steps of providing a sample biomolecule solution containing an aqueous buffer, a biomolecule, and a cryoprotectant agent, wherein the cryoprotectant agent comprises up to 60% (w / w) of the biomolecule solution, and other known components as necessary to solubilize and stabilize the biomolecule, in a sample holder of claim 1 or 18, cryogenically cooling the sample solution in the sample holder at a rate equal to or greater than 100 K / sec without ice formation, and examining the cooled sample using small angle X-ray scattering by passing a beam of X-rays through the sample.