65 results about "Internal radiation" patented technology

A method for determining a scatter correction for an x-ray radiation signal recorded by an x-ray detector (2) of an imaging modality based on x-ray radiation, the method comprising the following method steps: (a) receiving inside radiation data and outside scattered radiation data, wherein the inside radiation data is data obtained from a directly illuminated partial area (21) of the x-ray detector (2) with a primary x-ray beam (11) directed at an object within an examination area (3), wherein the outside scattered radiation data is data obtained by detecting scattered radiation (12) outside of the directly illuminated partial area (21); (b) based on the outside scattered radiation data, determining a scatter correction, in particular by estimating a part of the inside radiation data that is due to the scattered radiation (12).

The present invention provides a low electromagnetic interference target chamber for laser plasma and its system, comprising: an outer vacuum target chamber, an inner metal target chamber and a radiation shielding channel; the inner metal target chamber is fixed inside the outer vacuum target chamber through an insulating support block, and the inner metal target chamber is at zero potential; the outer vacuum target chamber comprises: a first vacuum pipe arranged in the side wall, isolating the cable of the inner metal target chamber from the outer vacuum target chamber; the radiation shielding channel is arranged inside the inner metal target chamber, one end of the radiation shielding channel is sealed and connected to the inner metal target chamber; the other end extends toward the target material direction and communicates with the inner metal target chamber; the radiation shielding channel is a metal tubular structure with a cutoff frequency. The present invention sets an inner metal target chamber so that the electromagnetic interference generated by the laser plasma is blocked by the metal inner shielding layer, which greatly reduces the electromagnetic interference to the outer vacuum target chamber.

An energy storage system converts variable renewable electricity (VRE) to continuous heat. 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. Low temperature waste heat from energy production can be recovered and used to improve overall system efficiency.

The invention relates to the technical field of infrared measurement, in particular to an intelligent calibration method and system for temperature measurement of an infrared sensor, and the method comprises the steps: enabling an infrared camera to align with a blackbody radiation source to form a calibration scene, collecting the output of a plurality of groups of pixels under different radiation temperatures and different internal part temperature states, fitting a temperature signal response model containing an exponential term and a bias term according to least square to obtain amplitude, exponential, temperature offset and output bias parameters; during measurement, a thermal image containing a target object and two reference blackbody sources is obtained, and parameters such as emissivity, environment equivalent radiation temperature, transmission medium and optical transmission, camera temperature and the like are synchronously obtained; performing non-uniformity and offset correction and abnormal pixel replacement on the thermal image; the initial temperature is inverted based on radiation transfer decomposition and compensation of internal radiation of the camera; and carrying out statistical averaging on the temperatures of the two blackbody reference regions to obtain a double-point correction coefficient, and outputting correction temperature or temperature distribution. According to the method, the problems that temperature inversion model parameters are difficult to adaptively update along with working conditions and on-site temperature measurement errors are difficult to effectively suppress when an existing infrared sensor array is in a long-distance non-contact temperature measurement scene can be solved.

A large-scale internal partition wall radiation internal circulation convective heat transfer square box electric heating furnace sequentially comprises a square box furnace steel structure, a square box furnace wall plate and a heat insulation lining from outside to inside. The whole shell is supported by the square box furnace steel structure, the square box furnace steel structure is connected with the square box furnace wall plate in a welded mode, and the heat insulation lining is arranged on the inner side of the wall plate and plays a role in heat insulation. The furnace tubes are horizontally arranged in an inner cavity of the square box furnace, a medium flows from top to bottom along each row of furnace tubes, certain spaces are reserved for the furnace tubes from top to bottom every three rows to insert the electric heating tubes, and the electric heating tubes and the furnace tubes are arranged at 90 degrees. The furnace tubes are arranged in multiple rows in the horizontal direction, and the distance between every two rows is 1.5 times or multiple times of the tube center distance. The square box type structure is adopted, the furnace tubes and the electric heating tubes are distributed in the square box type structure in a transversely and vertically staggered mode, and the space in the square box type furnace is utilized to the maximum extent. Gas in the furnace body cyclically and regularly flows between the two cavities, the airflow movement speed can be controlled by controlling the rotating speed of the frequency conversion fan, and the heat intensity of the surface of the furnace tube is greatly improved.

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.

The invention relates to a method for intelligently detecting the service life of a furnace lining in a non-ferrous metal smelting process based on multi-modal deep learning, and the method comprises the steps: collecting multi-modal data during the operation of a non-ferrous metal smelting furnace, and carrying out the preprocessing of the multi-modal data; fusing the preprocessed data, and performing depth feature extraction and anomaly detection on the fused data; based on the extracted depth features and the anomaly detection result, multi-physics field inversion and temperature distribution reconstruction are carried out, and internal radiation heat exchange temperature and furnace lining inner wall temperature distribution are obtained; and according to the internal radiation heat exchange temperature and the temperature distribution of the inner wall of the furnace lining, furnace lining remaining service life prediction and health state evaluation are carried out. The invention aims to realize high-precision detection and life prediction of the furnace lining state by fusing various sensor data and an advanced deep learning algorithm, so that the production efficiency is improved, the maintenance cost is reduced, and the safety of the production process is enhanced.

The application provides GPC1 in preventing and / or treating 131 The application of inhaled internal radiation in causing thyroid cancer belongs to the technical field of biological medicine. The application takes GPC1 as 131 A treatment target of inhaled internal radiation in causing thyroid cancer, and finds that high expression of GPC1 can promote the proliferation, migration and invasion of thyroid cancer cells, and low GPC1 inhibits the occurrence and development of thyroid cancer. Therefore, the application provides application of a reagent for inhibiting, knocking down or knocking out GPC1 in preparation of a drug for preventing and / or treating thyroid cancer. The application also provides that deletion of GPC1 can effectively alleviate 131 The phenotypes of thyroid cancer caused by inhaled internal radiation, and GPC1 is an effective target for preventing and treating 131 Thyroid cancer caused by inhaled internal radiation.

The present invention discloses a real-time estimation method for personnel radiation dose based on monitoring of I-131 and Co-60 concentrations in the air. The method estimates the internal radiation dose of personnel based on real-time measured data of I-131 and Co-60 activity concentrations. Furthermore, the method converts and accumulates the external radiation dose monitoring results to estimate the total radiation dose of personnel in real time. This method not only meets the real-time requirements but also enables instant correction based on the measured data, thereby improving the prediction accuracy. Therefore, the radiation dose received by personnel can be minimized, the probability of random effects can be reduced, and deterministic effects can be prevented.

The invention discloses a red light internal radiation rhinitis auxiliary phototherapy device, and relates to the technical field of rhinitis phototherapy, the device comprises a driving source and phototherapy emitters, the driving source is provided with two groups of single tube structures so as to be respectively guided into two nostrils of a patient, each group of single tube structure is internally provided with the phototherapy emitter, and each single tube structure comprises an emitter shell, a light source, a light source and a light source, an inner sleeve is arranged in the emitter shell, the phototherapy emitter can be installed in the inner sleeve, transverse partition plates are arranged on the two sides of the inner sleeve, and the interior of the emitter shell is divided into an air outlet bin and an air inlet bin which are distributed up and down through the transverse partition plates; the rubber expansion layer is fixedly mounted on the outer layer of the emitter shell; the phototherapy emitter is protected through the emitter shell, the phototherapy emitter is prevented from directly making contact with the nasal cavity of a patient, the rubber expansion layer contracts to assist the patient in breathing, an air inlet channel and an air outlet channel of the patient are distinguished, and the possibility that the phototherapy emitter is blocked by the nasal cavity mucus is reduced.

The invention discloses a preparation method of yttrium-90 (90Y)-loaded magnesium lithium silicate and a hydrogel radiotherapy embolism agent, relates to the technical field of medical materials, and comprises the preparation method of yttrium-90-loaded magnesium lithium silicate and the hydrogel radiotherapy embolism agent. Lithium magnesium silicate is modified and treated by phosphate, and citric acid is complexed with < 90 > Y < 3 + >, so that interlayer cations of the lithium magnesium silicate are replaced, and < 90 > Y < 3 + > is stably loaded on the lithium magnesium silicate to prepare the < 90 > Y-lithium magnesium silicate compound. Yttrium-90 is a therapeutic nuclide, and a 90Y-magnesium lithium silicate loaded compound can be added into an embolism agent as a thixotropic agent to prepare a hydrogel radiotherapy embolism agent, so that dual effects of internal radiation and vascular embolism are realized.

The invention discloses an alpine region sewage treatment mechanical stirring strengthening device which comprises a base, a stirring assembly and a heating assembly, the top of the base is connected with a stirring bin through supporting legs, the stirring assembly is arranged in the stirring bin, and the stirring assembly comprises a hollow stirring shaft and a gearbox. The two sets of hollow stirring shafts are rotationally connected into the stirring bin through bearing seats, the heating assembly comprises an electric heating plate and an electric heating rod, and efficient transfer and uniform diffusion of heat are achieved through the dual effects of bottom conduction and internal radiation of the stirring bin; an electric heating plate at the bottom of the stirring bin is matched with a high-thermal-conductivity pad to form a global basic heating layer, so that sewage at the bottom area of the stirring bin cannot be frozen due to low temperature; the internal electrical bars rotate along with the stirring shaft to form a dynamic heating field, and the temperature of sewage in the bin is uniformly distributed by combining the convection effect of reverse stirring, so that the temperature of the sewage is effectively maintained in the optimal activity interval of functional microorganisms such as nitrifying bacteria.

The intelligent waste radiation protection container for the nuclear medicine department comprises a lead barrel, first L-shaped fixing pieces are fixed to the outer walls of the two sides of the lead barrel respectively, and electric push rods are fixed to the outer walls of the tops of the first L-shaped fixing pieces. The radiation dosage in the lead barrel is monitored in real time through the NaI (T1) scintillator detector and the GM counting tube, and meanwhile, the real-time radiation dosage is displayed on the outer wall of the control panel, so that medical staff can know the real-time radiation dosage in the lead barrel without opening the lead barrel, meanwhile, a thick and heavy lead cover does not need to be lifted by themselves, and the working efficiency is improved. Garbage in the lead barrel can be conveniently taken out by a user, the labor intensity of medical staff is relieved, meanwhile, the weight and the volume, monitored by the distance measuring sensor and the weighing sensor, of the waste in the lead barrel can be transmitted to the control panel in real time, the control panel can display the volume and the weight data of the waste in the lead barrel on the screen, and therefore the waste can be conveniently taken out. And medical staff can clearly see the current waste storage amount in the lead barrel.

The application discloses a kind of symmetric split ring slot and L-shaped coupling branch combined hexagonal multi-frequency microstrip antenna, which can be applied to 5G mobile communication system;The antenna is composed of dielectric substrate, radiation patch and ground plate;Two split ring slot structures symmetric about the central axis of the patch are introduced in the upper half of the radiation patch, and two L-shaped coupling branches are added about the central axis of the feed line;The antenna uses embedded feed-in form, and the feed-in is inserted into the internal radiation patch;The antenna has simple structure, easy to process, resonant frequency is convenient to adjust, and has good passband matching characteristics;The application is designed to work in 28GHz, 37.5GHz, 44.5GHz and 50.5GHz frequency bands, and is suitable for 5G millimeter wave communication.

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.

The invention relates to the technical field of control cabinet systems, in particular to a control cabinet operation state intelligent monitoring and early warning system based on multi-source sensing. The data acquisition terminal is arranged in the control cabinet, the data acquisition terminal comprises a temperature sensor group, a vibration sensor and a smoke sensor, the temperature sensor group comprises a contact type sensor and a non-contact type sensor, the contact type sensor is attached to the inner surface of the control cabinet, and the non-contact type sensor is attached to the inner surface of the control cabinet. The non-contact sensor is arranged in the control cabinet to measure the radiation temperature in the control cabinet; the local processing unit is arranged outside the control cabinet, the local processing unit comprises an integrated panel, a microprocessor, a memory and a wired communication module, and the microprocessor, the memory and the wired communication module are all arranged in the integrated panel; the early warning unit is arranged at the upper end of the control cabinet, the early warning unit comprises an audible and visual alarm and a protective relay, and the audible and visual alarm and the protective relay are in signal connection with the microprocessor.

The invention relates to the technical field of electromagnetic energy enhancement and electromagnetic power synthesis, and the existing method is extremely sensitive to the position of a radiation point source in a material and the change of the sectional area of the material, and has high dependence on the numerical value of the relative dielectric constant E or the relative permeability mu of the material. The invention provides an electromagnetic energy enhancement structure based on a dielectric constant near-zero metamaterial, and the structure is characterized in that electromagnetic energy supply structures are located at the periphery of an electromagnetic energy collection region, and the electromagnetic energy collection region and all the electromagnetic energy supply structures are disposed in a metal boundary; energy radiated by the electromagnetic energy supply structures is transmitted to the electromagnetic energy collection area through the filling area to be received, linear superposition of electromagnetic energy in the electromagnetic energy collection area is achieved, the intensity of the output electromagnetic energy is regulated and controlled by adjusting the number of the electromagnetic energy supply structures, and nearly 100% energy transmission efficiency can be achieved.

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.

The invention relates to coil-type photochemical reactors having an internal source of radiation and is intended for use in the field of processing optically dense fluids. The present coil-type photochemical reactor consists of a housing having an inlet opening and an outlet opening and containing a coiled tube and a source of radiation which is disposed inside the cavity formed by the turns of the coiled tube. The housing consists of two flanges with a casing disposed therebetween. Mounted inside the casing, along the surface thereof, are stud bolts, the ends of which are fastened in the flanges. The stud bolts are surrounded by seals. The coiled tube is disposed between the stud bolts. The inlet opening is situated in one of the flanges, and the outlet opening is situated in the other flange. The ends of the coiled tube pass through the openings. The source of radiation is fastened on the outside of the flanges by caps and by seals disposed in bushings. The technical result consists in increasing the efficiency of a coil-type photochemical reactor.

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.

The utility model provides an antenna and a portable electronic device, the antenna comprises a radiator, the radiator is provided with a plurality of radiation support arms, and the radiator is also provided with a signal feed point, a first grounding point and a second grounding point, and the first grounding point and the second grounding point are respectively located at different positions; the first grounding point is located in one radiation support arm; the second grounding point is located outside the radiator and is electrically connected with the edges of the at least two radiation support arms. According to the antenna based on the above structure, through the first grounding point, the interference of a metal shell for installing the antenna on an internal radiation field is reduced, and the radiation efficiency of the antenna in a near-field area is ensured; through the second grounding point, the coupling effect of the antenna on the external metal shell can be enhanced, and the signal receiving and transmitting capability of the antenna in a far-field area can be improved; therefore, the antenna with the structure can effectively improve the signal penetration capability of the antenna under the metalized shell, and the appearance of the metalized shell is prevented from being damaged due to the requirement of an antenna signal.

An air treatment unit (1) produced in the form of a cartridge (2) is provided, which is configured to be positioned on at least part of the air circulation path in ventilation equipment. This treatment unit (1) has an interior volume (21) which is associated with at least one input orifice (3) and at least one output orifice (4) positioned at the ends of an air circulation path. At least part of the interior surface of the volume (21) is equipped with at least one light-emission source (5) with a wavelength of between 100 nm and 400 nm, designed to radiate towards the interior of the volume of the unit (1) at one section at least of the air circulation path in the interior of the volume of the unit (1).

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.

To provide a heating cooker having shielding performance and transmission performance.SOLUTION: A heating cooker comprises: a heating chamber; an infrared heater that emits infrared radiation directed inward from the outside of the heating chamber; a microwave generation part that emits a microwave directed inward from the outside of the heating chamber; a first plate-like member with a plurality of through-holes, which is positioned between the infrared heater and the heating chamber; and a second plate-like member with a plurality of through-holes, which is positioned away from the first plate-like member between the first plate-like member and the infrared heater.SELECTED DRAWING: Figure 10

The present application relates to the technical field of in vivo radiation dose rate determination, and specifically to a method, system, and storage medium for determining in vivo radiation dose rate during nuclide therapy. The method comprises: measuring an energy spectrum of radiation emitted from a body during nuclide therapy for a preset duration; collecting ambient temperature and humidity at each moment within the preset duration; analyzing deviations of ambient temperature at all moments from a preset standard temperature range, and ambient humidity at all moments from a preset standard humidity range, and correcting the radiation energy spectrum data; determining the characteristic complexity of the corrected radiation energy spectrum; obtaining an optimized path width of the radiation energy spectrum; and using the optimized path width to obtain an optimized radiation energy spectrum and obtain the in vivo radiation dose rate during nuclide therapy. This improves the accuracy of determining the in vivo radiation dose rate during nuclide therapy.

The utility model provides a capacitive pressure sensor which mainly comprises a shell and a detection electrode arranged in the shell, the detection electrode divides the shell into a reference cavity and a detection cavity, a fixed electrode and a fixed pole plate are arranged in the reference cavity, the fixed electrode is arranged on the first side of the fixed pole plate, and the fixed pole plate is arranged on the second side of the fixed pole plate. The fixed electrode and the detection electrode are oppositely and parallelly arranged, the detection electrode deforms when the air pressure in the detection cavity changes, the heating plate is arranged on the first side of the fixed electrode and surrounds the fixed electrode, the inner side of the heating plate is matched with the outer side of the fixed electrode, and the outer side of the heating plate is matched with the outer side of the fixed electrode. And the outer side of the heating plate is matched with the shell. According to the capacitive pressure sensor, the interior of the capacitive pressure sensor can be subjected to radiation heating through the heating plate, so that the electrothermal conversion efficiency is higher, the heating uniformity of the detection electrode can be improved, and the measurement precision of the capacitive pressure sensor is further improved.

To provide a sound driver with a UV-LED, and an earphone.SOLUTION: A sound driver 1 with a UV-LED, includes: a housing 11 having a suction port 112 sucking external air into the inner part; a sound driver unit having a vibration board 121 that is provided into a housing, and vibrates on the basis of a sound electric signal to be input; a ventilation part 113 that is provided into the housing, and can ventilate the internal part of the housing with an external auditory canal in a state where the earphone is mounted to an ear; an exhaust part 114 that is provided to the housing, and communicates the internal part and the external part of the external auditory canal in the state where the earphone is mounted to the ear; and a UV-LED module 13 that is provided to the housing, and radiates to air in the housing.EFFECT: Air can be ventilated to the external auditory canal, growth of fungi and eumycetes is prevented, an ear disease such as an otitis externa or the like can be prevented.SELECTED DRAWING: Figure 1

Disclosed is a radiation shield, for providing radiation protection of an operator against ionizing radiation. This radiation protection screen is equipped with: —a first dosimetric measuring unit, for measuring an external radiation dose received on the side of the external face, —a second dosimetric measuring unit, for measuring an internal radiation dose received on the side of the internal face, —an electronic display, for displaying information intended for the operator; and —a controller, coupled with the dosimetric measuring unit and with the electronic display, for displaying, on the electronic display, information relating at least to the measured internal / external radiation doses.

The utility model relates to the technical field of atomization equipment, and provides a heating assembly and atomization equipment. The heating assembly comprises a heating pipe, the heating pipe is of a light-transmitting structure, and an insertion opening is formed in one end, in the first direction, of a containing cavity in the heating pipe; a plurality of supporting layers are arranged on the outer side wall of the heating pipe at intervals in the first direction, and each supporting layer comprises a plurality of supporting structures arranged at intervals in the circumferential direction; and the heating piece is wound on the circumferential outer side of the heating pipe, is borne on the supporting structures of the multiple supporting layers and is used for heating the aerosol generating rod in the containing cavity. According to the technical scheme, the heating piece can radiate infrared rays to the interior of the heating tube, so that the aerosol generating rod contained in the heating tube is heated more uniformly, the local over-baking phenomenon can be prevented, the structure is simple, a thick-film resistor does not need to be printed, the phenomena of deformation, collapse, displacement and the like caused when the heating piece is installed in the vacuum cavity can be avoided, and the service life of the aerosol generating rod is prolonged. And the processing and manufacturing difficulty can be effectively reduced, and the manufacturing cost can be reduced.