91 results about "Internal radiation" patented technology

Various embodiments of the present invention provide methods and systems for deterministic calculation of radiation doses, delivered to specified volumes within human tissues and organs, and specified areas within other organisms, by external and internal radiation sources. Embodiments of the present invention provide for creating and optimizing computational mesh structures for deterministic radiation transport methods. In general these approaches seek to both improve solution accuracy and computational efficiency. Embodiments of the present invention provide methods for planning radiation treatments using deterministic methods. The methods of the present invention may also be applied for dose calculations, dose verification, and dose reconstruction for many different forms of radiotherapy treatments, including: conventional beam therapies, intensity modulated radiation therapy (“IMRT”), proton, electron and other charged particle beam therapies, targeted radionuclide therapies, brachytherapy, stereotactic radiosurgery (“SRS”), Tomotherapy®; and other radiotherapy delivery modes. The methods may also be applied to radiation-dose calculations based on radiation sources that include linear accelerators, various delivery devices, field shaping components, such as jaws, blocks, flattening filters, and multi-leaf collimators, and to many other radiation-related problems, including radiation shielding, detector design and characterization; thermal or infrared radiation, optical tomography, photon migration, and other problems.

Methods and computer readable media are disclosed for ultimately developing a dosimetry plan for a treatment volume irradiated during radiation therapy with a radiation source concentrated internally within a patient or incident from an external beam. The dosimetry plan is available in near"real-time" because of the novel geometric model construction of the treatment volume which in turn allows for rapid calculations to be performed for simulated movements of particles along particle tracks therethrough. The particles are exemplary representations of alpha, beta or gamma emissions emanating from an internal radiation source during various radiotherapies, such as brachytherapy or targeted radionuclide therapy, or they are exemplary representations of high-energy photons, electrons, protons or other ionizing particles incident on the treatment volume from an external source. In a preferred embodiment, a medical image of a treatment volume irradiated during radiotherapy having a plurality of pixels of information is obtained.

The invention provides a method for comprehensive evaluation of uranium mining and milling atmospheric radiation environment. The method comprises the following steps: pretreating atmosphere; pretreating terrain; calculating atmospheric diffusion; determining breathed internal radiation dose; determining eaten internal radiation dose; determining dose of external radiation deposited on earth surface; determining dose of external radiation immersed in smoke plume; determining public individual dose; determining public group dose and the like. The method disclosed by the invention has the functional characteristics of being scientific, accurate, rapid and comprehensive, and is suitable for prediction and evaluation on influences of the national uranium mining and milling atmospheric radiation environment; by using the method, the calculation results can preferably satisfy the actual relocation diffusion rules of atmospheric pollutants, and the environmental influences and public dose calculation are more scientific and reasonable.

The invention discloses a vacuum brazing tool for a water-cooling plate. The vacuum brazing tool comprises a movable trolley, wherein a clamping device is arranged on the movable trolley and comprises a bottom board, a cover plate and at least one group of clamping device, wherein the bottom board and the cover plate are vertically superposed; and the vacuum brazing tool is characterized by further comprising a C-shaped main frame, wherein a suspension beam is arranged on the upper part of the C-shaped main frame, a vertical moving device which can move along the direction of the suspension beam is arranged on the lower side of the suspension beam, a pressing block is arranged on the bottom end of the vertical moving device, and at least one load sensor is arranged on the bottom of the pressing block. According to the tool, total press fitting force on the water-cooling plate can be accurately controlled, the press fitting force on each part of the water-cooling plate is basically consistent, and thus, the deformation of each clamp is slight and consistent, the service life of each clamp is prolonged, round hole structures of parts such as the bottom board and a pressing board are beneficial to the internal radiation heat adsorption and heat dissipation of a product in a vacuum brazing furnace, so that the brazing efficiency is improved, after the tool is adopted to weld the water-cooling plate, the once finished product rate can reach above 90%, and the tool can be widely applied to the assembling of the water-cooling plate before the vacuum brazing.

Variations in critical dimensions of circuit features of sophisticated semiconductor devices may be reduced by efficiently extracting mask and / or imaging tool specific non-uniformities with high spatial resolution by using measured intensity values and simulated intensity values. For example, a tool internal radiation sensor may be used for measuring the intensity of an image of a lithography mask, while a simulated intensity enables eliminating the mask pattern specific intensity contributions. In this manner, high spatial resolution of the corresponding correction map may be obtained without undue effort in terms of man power and measurement tool resources.

The invention relates to a special air conditioner for a base station with a separate type radiation plate evaporator, which comprises a machine room, an outdoor unit and the radiation plate evaporator, wherein the radiation plate evaporator comprises refrigerant pipes, a radiation plate, an internal radiation finned plate and a thermal insulation material, the refrigerant pipes are connected with the internal radiation finned plate and arranged between the radiation plate and the thermal insulation material, and the refrigerant pipes of the evaporator are mutually communicated through connecting pipes; and the radiation plate evaporator forms the closed-loop connection with a compressor, a condenser and an expansion valve through the connecting pipes, and electric control valves are respectively arranged at an air inlet and an air outlet of the machine room. The special air conditioner for the base station with the separate type radiation plate evaporator can carry out direct radiation heat exchange on a heat source, quickly and effectively reduce the temperature and lead components to work at lower temperature; as the surface temperature of the component is reduced, the working efficiency is improved, the effective output power is increased, and the actual calorific value is reduced, thereby gradually reducing the power consumption of the air conditioner, forming the virtuous circle, further effectively reducing the power consumption of the air conditioner and saving electric energy and electricity fee.

The present invention provides a microwave radiating device which treats a radiated material by microwave irradiation; and further provides a method of producing a sugar ingredient from a plant material.The microwave radiating device of the present invention is equipped with an irradiating means which has a microwave radiating source, and containers which accept radiated material inside. Further, the container of the device has supply means which provides radiated material to the container, and discharge means which discharges radiated material from the container, and a microwave receiving section which makes microwaves that irradiate from radiating means, penetrate into the container through the medium of dielectric material. Further, there is provided at least one layer that is composed of non-dielectric material, between the atmosphere of the inner side and the outer side of the container. Yet, irradiating means and the above container are connected in a removable mode.

The invention belongs to the technical field of nuclear power plant design, and particularly relates to a core damage assessment method for a nuclear power plant. The method includes the step of conducting core damage assessment through the parameters such as the core outlet thermocouple temperature (CET), the containment internal radiation level (CRM), the primary circuit heat pipe section temperature (RTD), the pressure vessel water level (RVL) and the source range detector reading (SRM), and further includes the step of conducting core damage assessment through containment internal hydrogen concentration (CH) and primary circuit coolant sampling concentration (SAM). According to the core damage assessment method for the nuclear power plant, the design characteristic of the latest nuclear power plant is fully considered, various monitoring parameters capable of reflecting the core state are adopted, hence, the core damage state and the degree are assessed through diversified means, and quick and visual support is provided for emergency aid decision making of the nuclear power plant.

The invention relates to an energy-saving concrete maintenance method by temperature-controlled automatic water supply and hot water circulation, which comprises the following steps: adopting a combined maintenance method of internal radiation and external storage, namely, arranging a circulated cooling water pipe in a bearing platform, and cooling circulated flowing water during concrete construction and maintenance to accelerate radiation of heat inside the large-sized concrete of the bearing platform; after the concrete is poured and then initially set, covering a layer of film and two layers of gunny bags to carry out heat and moisture preservation and maintenance; during the heat and moisture preservation and the maintenance of the bearing platform, according to the temperature of a site environment, monitoring temperature and temperature difference of inlet water and outlet water of the cooling water pipe by an automatic temperature measuring control system, automatically reclaiming hot water in the cooling water pipe, recharging a water pool by part of the hot water for cyclic utilization, and controlling the difference value of the inlet water temperature of the cooling water pipe and the highest temperature of the concrete to be lower than 25 DEG C; and recharging the surface of the bearing platform by the other part of the hot water for heat preservation and maintenance. The method adopts the combined maintenance method of the internal radiation and the external storage, fully meets civilized construction requirements of environmental protection, energy conservation, and circulation, and can ensure the maintenance quality of the bearing platform of the large-sized concrete.

An ultraviolet pasteurizer capable of being used selectively according to whether a person is present or absent in a room to be pasteurized, characterized by comprising an ultraviolet lamp, an openable shielding door blocking off or unblocking off the ultraviolet ray radiated from the ultraviolet lamp to the outside, an internal radiation chamber formed on the inner side of the shielding door in the state where the shielding door is closed, an inlet and an outlet allowing the internal radiation chamber to communicate with the outside, and an air blow fan sucking fresh air from the inlet to the internal radiation chamber, allowing the air to pass near the ultraviolet lamp, and blowing out the air from the outlet.

The invention discloses a computer device, which comprises a main board, a plurality of adapter cards, a substrate management controller and a plurality of fans. The main board has a plurality of slots. The adapter cards are arranged on the slots respectively and each adapter card is configured with a sensor. The substrate management controller is coupled with the main board through a system management bus and receives the sensing data of the sensors. All fans are coupled with the substrate management controller, so that the rotating speeds of the fans can be adjusted according to the sensing data received by the substrate management controller. Thus, internal radiation control of the computer can be performed accurately, and unnecessary energy consumption is avoided.

The invention discloses a novel oily sludge treatment method and system. Treatment of oily sludge is divided into three thermal cracking stages, and one specific problem of the oily sludge is solved in each stage, so that the oily sludge can be treated more effectively, and the oily sludge become harmless. Another key point is the structural design of a matched thermal cracking machine, and a conventional external heating mode is changed into an internal radiation heating mode, so that the coking problem of the oily sludge on the inner walls of equipment is effectively inhibited, and the equipment can operate normally. Meanwhile, two purposes of water removal and oil removal are achieved, so that normal operation of the treatment equipment is ensured while the oily sludge is treated to bequalified. The whole process is modularly designed, the system is easy to for assembly, maintenance and upgrading improvement, and the system also has the advantages of low maintenance cost and high automation degree.

The invention relates to a method for carrying out a spatial displacement damage effect evaluation test through high energy protons. The method includes the following steps that firstly, internal radiation environment of a spacecraft is calculated, space environment effect calculation software is used, track parameter values of the earth track spacecraft, a space radiation environment model, the shielding thickness of the spacecraft are input, and the internal proton differential energy spectrum of the spacecraft is calculated; secondly, the protons are selected, the worked-out internal proton differential energy spectrum of the spacecraft in the track has a proton fluence peak value as the protons are not evenly distributed along with energy, and the energy proton corresponding to the fluence peak value is selected as the proton for the evaluation test; thirdly, the proton fluence phi(EI) for the test is calculated; fourthly, the radiation test is carried out, and the energy protons determined through calculation are used for radiating an element to the specified fluence. After radiation, the electricity test is carried out according to product standards and requirements.

The invention provides a gas scintillation proportional counter, consisting of a gas container and a photomultiplier tube, wherein the gas container is filled with working gas; an entrance window and an exit window are respectively arranged above and under the gas container which is internally provided with an electric field; Gamma ray or X ray enters the gas container after penetrating the entrance window, and has a photoelectric effect with the working gas in the gas container so as to generate photoelectrons; under the action of the electric field, the electrons are accelerated by the electric field, then excite gas atoms to emit vacuum ultraviolet photons which are emitted from the exit window and detected by the photomultiplier tube, and the upper part of the exit window is a wavelength conversion structure. The gas scintillation proportional counter can meet the need of measurement of internal radiation living bodies after the body intakes low-energy nuclide, and can detect the returned laser of the working gas by only needing to use the common photomultiplier tube, thus greatly reducing the cost of the gas scintillation proportional counter.

Provided is an internal radiation ring type static speed-adjusting permanent magnetic coupling. The internal radiation ring type static speed-adjusting permanent magnetic coupling is composed of a conductor outer rotor I, a permanent magnetic inner rotor II and a gearing face adjusting mechanism III, wherein the conductor outer rotor I is connected with a motor shaft (17) and a motor shaft key strip (18) through a motor shaft expansion sleeve to lead in motor power, the permanent magnetic inner rotor II is connected with a bearing shaft (19) and a bearing shaft key strip (20) through a bearing shaft expansion sleeve to output torque, and the gearing face adjusting mechanism III is adjusted in a manual mode to change the gearing area between the conductor outer rotor I and the permanent magnetic inner rotor II in a stationary state. The internal radiation ring type static speed-adjusting permanent magnetic coupling is characterized in that the conductor outer rotor I carries out high-speed rotation on an outer copper ring in a single circular ring inductor of the conductor outer rotor I so as to carry out radial fixation and air gap cutting on a magnetic force line of an internal radiation type integral magnetic ring of the permanent magnetic inner rotor II to produce eddy current on the outer copper ring, meanwhile, the eddy current produces an induced magnetic field, and the induced magnetic field and a permanent magnetic field are in interaction to achieve power connectionless transmission. Meanwhile, a high-efficiency heat dissipation device is used for reducing the temperature of the outer copper ring and the temperature of the internal radiation type integral magnetic ring, and stable operation of system magnetic force is ensured.

The present invention relates to a computational system and method to analyze a radiation field in a light water nuclear reactor. The system and method include a radiation transport module for performing a neutron and gamma transport calculation of a reactor geometry model of the light water nuclear reactor for at least one fuel cycle; a material analysis module for analyzing flux data calculated by the radiation transport module for materials and / or components within the light water nuclear reactor; and a mobile component tracking module for calculating radiation exposure for components within the light water nuclear reactor which have more than one different location during or between the at least one fuel cycle.

The invention relates to the technical field of medical apparatuses, in particular to a method for designing a pipe support capable of bearing miniature radioactive particle sources, wherein the pipe support is mainly used for internal radiation treatment of intermediate and late pancreatic cancer and malignant bile duct stenosis. The method can optimally design a concrete structure of the pipe support capable of bearing the miniature radioactive particle sources by utilizing natural cavities (including a common bile duct, a main pancreatic duct, an accessory pancreatic duct and so on) on the circumference of the pancreatic head of a human body. The method comprises: S1, designing the outside diameter of the support, the inside diameter of drainage cavities, the length of the support and so on; S2, selecting different support materials according to a clinic radiation planning, and selecting whether to apply materials with different shielding materials to seal a radiation window; and S3, designing the inside diameter of a particle channel, the dimension of the radiation window and interval arrangement. The method realizes the aims of precise positioning, precise planning and precise treatment, and achieves optimum internal radiation treatment effect.

A radiation measuring system includes a whole-body counter having upper and lower radiation detectors that are located in front of a measurement space, which has an inlet passage and is located in a housing, and that detects respective internal radiations of a measurement target and first and second internal radiations of a body region corresponding to one of a thyroid gland, a lung, a whole body, or a hypogastrium, and a processor controlling determination of an internal radioactive contamination location of the measurement target, based on a ratio of the first and second internal radiations, applying the optimal measurement geometry corresponding to the ratio of the first and second internal radiations, and detecting the first and second internal radiations of a body region corresponding to the internal radioactive contamination location.

A method and system for providing improved timing calibration information for use with apparatuses performing Time of Flight Positron Emission Tomography scans. Relative timing offset, including timing walk, within a set of processing units in the scanner are obtained and corrected using a stationary limited extent positron-emitting source, and timing offset between the set of processing units is calibrated using an internal radiation source, for performing calibration.

The invention discloses a system and method for cracking oily sludge; dry and wet oily sludge generated by a gas field and an oil field is used for producing light oil, cement building material raw materials, high-grade highway subgrade materials and oil area highway subgrade materials through a thermal cracking process, and harmless treatment is carried out, so that a new way is opened up for reasonable utilization of the oily sludge; the invention provides a whole set of complete oily sludge treatment steps and matched equipment aiming at oily sludge characteristic design. Equipment used in the method is improved in a targeted manner, and a mode of three-stage internal radiation heating of an oil sludge updating surface is adopted, so that the coking problem is effectively solved, and safe and normal operation of the equipment in the process is guaranteed; the invention provides a reliable process composition, so that normal operation of treatment equipment is ensured while the oily sludge is treated to be qualified. The whole set of process adopts modular design, is easy to assemble, overhaul, upgrade and reform, and also has the characteristics of low maintenance cost and high automation degree.

The invention discloses an inversion method of a three-dimensional radiation field dose. The inversion method comprises the following steps: S1, carrying out spatial gridding; S2, measuring and calculating a grid node radiation dose value; S3, carrying out interpolation processing on a radiation dose value on a grid line in a horizontal plane; S4, carrying out interpolation processing on an internal radiation dose value of the grid line in the horizontal plane; and S5, carrying out interpolation processing on a radiation dose value in a vertical direction. Under the circumstance that the radiation source is unknown, a few of data in the radiation field are measured; and on the basis of the interpolation algorithm and theory, the radiation dose of the whole radiation field is obtained by inversion, so that a practical problem of inversion of the radiation field is solved. According to the invention, lots of distribution measurement in a spatial region is avoided; inversion of a radiation field is realized based on sparse data; and the work load is low, the measurement is carried out quickly, and the method is simple and is easy to implement.

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system.

An internal radiation ring static speed regulation protection type permanent magnet coupler is composed of a conductor outer rotor I, a permanent magnet inner rotor II, a meshing face adjustment mechanism III and an intelligent protection system IV. The conductor outer rotor I is connected with a motor shaft through a motor shaft expansion sleeve, and motor power is led by a motor shaft chain. The permanent magnet inner rotor II is connected with a load shaft through a load shaft expansion sleeve, and torque is output through a load shaft chain. Under a static state, the meshing face adjustment mechanism III is adjusted manually, and therefore the size of meshing area of the conductor outer rotor I and the permanent magnet inner rotor II can be changed. A signal coded disc is arranged on a signal detection shaft on a load side and used for detecting load rotation speed change in real time. The internal radiation ring static speed regulation protection type permanent magnet coupler is characterized in that when the conductor outer rotor I rotates at a high speed, an outer copper ring in a single ring induction body cuts a magnetic force line of an internal radiation type integrated magnetic ring in the permanent magnet inner rotor II through radial fixed air gaps so that vortex can be generated on the outer copper ring, and meanwhile, the vortex generates an induced magnetic field to be in interaction with a permanent magnetic field to achieve power connectionless transmission.

The invention belongs to the field of radiation dosage monitoring, and in particular relates to a portable measurement system for measuring an internal radiation living body. The portable measurement system comprises a detector part, a multi-signal mixer, a plurality of analyzers and a computer data management system, wherein the detector part consists of a probe, pre-amplifiers and linear amplifiers; the measurement system adopts a plurality of compound semiconductor detector arrays; each detector is independently provided with each pre-amplifier and each linear amplifier; a plurality of linearly output signals are introduced into the multi-signal mixer; the signals are encoded by the multi-signal mixer and are transmitted to the analyzers; and acquired data are subjected to data processing of the computer data management system, so that a nuclide energy spectrum diagram can be displayed. By the portable measurement system, low-energy x and gamma rays of the internal radiation living body can be measured; and the detection efficiency and the sensitivity are high.

The invention provides a magnet arrangement in an NMR apparatus comprising a superconducting magnetic coil system (C) for producing a homogeneous one with a He container (H1) having liquid helium and a He inner tube (H), the magnetic coil system being mechanically rigidly connected to the He container , Wherein a radiation shield with a radiation shield inner tube (S) surrounds the He container at a distance for reducing the evaporation rate of the liquid helium, and wherein a field shaping device (P) made of magnetic material for shimming the homogeneous magnetic field is arranged in the space between the he inner tube and the radiation shield inner tube , Is characterized in that the field-shaping device is fixed in the space between the he inner tube and the radiation shield inner tube in such a way that it is in a rigid mechanical contact with the He container without touching the radiation shield inner tube.The field shaping device can be installed in the cryostats so that it does not move relative to the superconducting coils. The He container does not have to be opened for work on the field-shaping device and a decomposition of the cryostat is avoided.

The invention relates to a beam-defining clipper. The beam-defining clipper comprises a box body, a filtering assembly, an adjusting assembly and a transmission rope, wherein the box body comprises amain body and a basal plate; the main body is provided with an accommodating cavity and an opening which communicates with the accommodating cavity; the basal plate is connected to the opening of themain body; the filtering assembly is in pivot rotating connection to one side facing the accommodating cavity, of the basal plate around a first axis; the adjusting assembly is in pivot rotating connection to the basal plate around a second axis, wherein an angle is formed between the second axis and the first axis; one end of the adjusting assembly extends out of the main body; and the transmission rope is arranged between the filtering assembly and a part located in the accommodating cavity, of the adjusting assembly in a winding manner, so that the rotating of the adjusting assembly and therotating of the filtering assembly are mutually linked. According to the beam-defining clipper disclosed by the invention, only one hole allowing one end of the adjusting assembly to extend is needed, so that the size of the formed hole is effectively reduced, internal radiation leakage is effectively reduced, and the health of an operator is guaranteed. The invention also relates to an X-ray machine.

The invention relates to a heat radiator, in particular to a high-power-box-type diesel engine heat radiator for a power station. The diesel engine heat radiator and a power station unit (16) are arranged in the same box body and are separated through a clapboard (15), so that respective independent sealed cabins are formed; two air inlets of the diesel engine heat radiator are respectively arranged on two adjacent wall faces of a heat radiating cabin; an air outlet is arranged on a top face of the heat radiating cabin; a high-temperature heat radiator (1) and a low-temperature heat radiator (2) respectively correspond to the two air inlets of the diesel engine heat radiator; and an air intake shutter I (6) and an air intake shutter II (7) are respectively arranged on two adjacent wall faces used as the air inlets of the heat radiating cabin. According to the heat radiator, the heat radiating cabin and the power station unit cabin are separated, so that the pollution of sand dust and oil gas to the heat radiator is effectively avoided; the influence of outside wind direction variation on the heat radiating effect is small; the heat radiator cannot be influenced by internal radiation heat of the unit cabin; and the daily clean, overhaul and maintenance are convenient.

A ultraviolet radiation sensor system with sterilizer consists of sensor and sterilizer. Sensor is used to test radiation degree of radiation field and response to radiation, the device consists of a window to radiation field, which moves from internal radiation field to external radiation field, when window moves to external radiation field and is connected to sterilizer, and sterilizer starts and removes scale from window. It can be a chemical sterilizer, a mechanical sterilizer or mixed sterilizer.

The invention discloses an adsorption array and a cryogenic pump with the adsorption array. The adsorption array comprises a heat transfer plate and a connecting plate, wherein a plurality of cryogenic plates are arranged on the heat transfer plate, the outer contours of the cryogenic plates are in a circular arc shape, and the outer contours of all the cryogenic plates are located on the same virtual spherical surface; and an adsorption material is arranged on each cryogenic plate. The cryogenic pump comprises the adsorption array, a refrigerating machine and a shell, wherein a radiation shield is arranged in the shell; the adsorption array is installed at the end part of a second-stage cooling stage through the connecting plate; the connecting plate is perpendicular to the axis of the second-stage cooling stage; the second-stage cooling stage and the adsorption array are both located in the radiation shield; a baffle is arranged at an opening of the radiation shield; a pump opening flange is arranged at the opening of the shell; and the opening direction of the radiation shield is the same as that of the shell, the axis of the radiation shield coincides with the axis of the shell, and the axes of a first-stage cooling stage and the second-stage cooling stage are perpendicular to the axis of the radiation shield. The cryogenic pump has the advantages that H2 can directly and quickly reach the adsorption material and is captured, and the pumping speed of the cryogenic pump on the H2 is increased.