79 results about "Ionizing radiation" patented technology

Systems and methods for guiding radiation therapy including providing particle radiation to a region of interest of a subject and receiving volumetric ionizing radiation acoustic imaging (iRAI) data and ultrasound imaging data from the region of in response the particle radiation. Further, from the iRAI data and the ultrasound imaging, a position of the particle radiation in the region of interest is determined, that position being a treatment position of the particle radiation. Further, the systems and methods determine one or more parameters of the particle radiation for adjusting in response to the determination of the position.

The invention discloses a rapid large-scale calculation simulation method and system for gamma radiation dose in a dynamic environment and a storage medium, and belongs to the technical field of ionizing radiation protection. The method comprises the following steps: firstly, constructing a triangular mesh scene model containing a radioactive source and a shielding body, and discretizing the radioactive source into a local point kernel; global coordinates of the point kernel and the vertex of the triangle are calculated in parallel by using a GPU, and a maximum parallelization hierarchical surrounding structure MPBVH of the scene is constructed; ray tracing is executed in parallel on the GPU, and all intersection points of MPBVH calculation rays and the shielding body are traversed to determine the thickness and the material of each shielding layer; and finally, dose values of all counting grids are calculated in parallel by adopting a point kernel method. When a radioactive source or a shielding body in a scene is subjected to dynamic changes such as movement and rotation, geometric data can be quickly updated, and calculation can be executed again. According to the method, the speed of large-scale point kernel calculation is increased, the influence of the environmental complexity on large-scale calculation time consumption is small, and the method can be suitable for rapid large-scale calculation and dynamic updating of the radiation field in the complex dynamic environment.

Disclosed herein are methods and apparatus for acquiring positron emission (or PET) data in the presence of ionizing radiation causing PET detector afterglow. In one variation, the method includes adjusting a coincidence trigger threshold of a PET detector during a treatment session. In one variation, the method includes adjusting a gain factor used in positron emission data acquisition (e.g., a gain factor used to multiply and / or shift an output(s) of a PET detector(s)) during a treatment session. In some variations, a method for acquiring positron emission data during a radiation treatment session includes suspending communication between a PET detector and a signal processor of a controller for a predetermined period of time after a radiation pulse is emitted by a linear accelerator.

A device for concentrating ionizing radiation fluence is disclosed having a coupling structure linking the external radiotherapy device with linear accelerator to an external structure, whose central axis is hollow with an input window through which electrons enter attaching to the rotation device; a rotation system linking the coupling structure with a coupling flange rotating an inner structure; a deflection system in the inner structure, wherein the deflection system has first and second magnetic deflection devices; a system for controlling the focal point, which is in the electron deflection system, having an electronic control system controlling a set of motors that produce coordinated movements of the second magnetic deflection device, a correction element and a collimator, which change the position of the focal point; and at least two laser diodes on the edge of the collimator pointing towards the focal point determining the position of the electron beam generated.

A solid-state device having a substrate that receives an ionizing radiation, logic circuits, integrity circuits, and a collection circuit. The logic circuits are operational to perform logic functions. The logic circuits are located in an area on the substrate, and are individually susceptible to a possible corruption by the ionizing radiation. Each integrity cell is initialized to a predetermined state. The integrity cells are located in the area on the substrate, arranged in a pattern neighboring the logic circuits, and individually susceptible to disrupting the predetermined state in response to the ionizing radiation. The collection circuit is located on the substrate. The collection circuit is operational to read the plurality of integrity cells, and assert a report signal that identifies the possible corruption in a subset of the logic circuits due to the ionizing radiation in response to reading an incorrect state in a neighboring one of the integrity cells.

The present invention provides: a technique which enables design with a high degree of freedom in touch or appearance of a decorative sheet; and a decorative sheet which has excellent scratch resistance. Disclosed is a decorative sheet 1 which comprises a master layer 2, a primer layer 4, and a surface protection layer 6, and has a plurality of air bubbles 5 between the surface of the surface protection layer 6 and the master layer 2. The surface protection layer 6 comprises a first gloss adjustment layer 61 that is provided on the primer layer 4 and contains a cured product of a first ionizing radiation curable resin, and a second gloss adjustment layer 62 that partially covers the upper surface of the first gloss adjustment layer 61 and contains a cured product of a second ionizing radiation curable resin. The upper surface of the first gloss adjustment layer 61 includes a plurality of protrusions each having a ridge shape, and the ratio B / A of the height B of the upper surface of the first gloss adjustment layer 61 based on the lower surface of the primer layer 4 at the positions of the plurality of air bubbles 5 to the height A of the upper surface of the first gloss adjustment layer 61 based on the lower surface of the primer layer 4 at a position separated from the plurality of air bubbles 5 is greater than 1.

Provided is a decorative sheet having excellent scratch resistance and excellent adhesion between gloss adjustment layers. A decorative sheet (1) is provided with a raw material layer (2) and a surface protection layer, and the surface protection layer comprises: a first gloss adjustment layer (5) which is provided on the raw material layer (2) and contains, as a resin cured product, a cured product of a first ionizing radiation-curable resin that is a first mixture of an acrylic acid ester and a methacrylic acid ester, and a second gloss adjustment layer (6) which is provided on the first gloss adjustment layer (5) and contains, as the resin cured product, a cured product of a second ionizing radiation-curable resin that is a second mixture of an acrylic acid ester and a methacrylic acid ester; and a second gloss adjustment layer (6) which partially covers the upper surface of the first gloss adjustment layer (5), contains a cured product of a second ionizing radiation-curable resin as a resin cured product, and has a higher specular gloss GS (60 DEG) than the first gloss adjustment layer (5).

The application discloses an ionizing radiation field simulation calibration system based on artificial intelligence and particularly relates to the field of simulation calibration, comprising a multi-source radiation data acquisition module, a data preprocessing module, an AI simulation calculation module, a real-time radiation field calibration execution module, and a multi-dimensional calibration result AI verification module; the application generates a standardized data set by collecting original radiation field data and performing outlier rejection, normalization and enhancement processing; a radiation field dynamic simulation model is constructed based on a deep learning model, and a three-dimensional space dose distribution simulation result is output in real time; a calibration parameter optimization model is constructed based on reinforcement learning, a calibration instruction is generated, and an execution mechanism is driven to perform real-time calibration; a multi-dimensional verification index system is constructed, a deep learning classification model based on an attention mechanism is used to intelligently verify the calibration result, and the calibration result is divided into three grades, namely, qualified, to-be-optimized and unqualified; for the result that does not pass the verification, an error traceability algorithm is started, and a correction suggestion is generated.

The application belongs to the cross field of radiation safety monitoring and Internet of Things technology, and particularly relates to a low-power consumption Mesh distributed radiation intelligent monitoring system based on a double GM tube adaptive fusion algorithm. In order to solve the defects of the wireless radiation monitoring system, such as limited communication distance, limited node quantity, poor network reliability and the like, the application adopts a low-power consumption Bluetooth Mesh network (BLE Mesh) architecture, integrates a double-channel Geiger-Muller (GM) tube radiation detector, a sliding window CPM algorithm, an adaptive range selection and weighted fusion algorithm, an intelligent multi-level alarm mechanism and a remote dynamic configuration function, and realizes large-range, multi-node, self-organizing network, low-power consumption distributed ionizing radiation real-time monitoring and intelligent early warning.

The application discloses a novel single-event-hardened flip-flop circuit, which comprises a master-stage latch and a slave-stage latch connected in parallel between a first transmission channel and a second transmission channel, wherein the first input and output ends of the master-stage latch and the slave-stage latch are connected with the first transmission channel, and the second input and output ends of the master-stage latch and the slave-stage latch are connected with the second transmission channel; a delay element is arranged in the feedback loop of the master-stage latch and / or the slave-stage latch; the delay element is used for keeping the level of the second node of the feedback loop unchanged when the first node of the feedback loop is affected by single particle incidence during the data holding stage of the latch in which the delay element is arranged, and the level of the first node is recovered after the ionizing radiation is finished. The master-stage latch and the slave-stage latch are connected in parallel, and the delay element is arranged in the latch, so that the flip-flop circuit with the advantages of low production cost, small occupied area, high data transmission speed and good single-event-upset resistance is obtained.

A decorative sheet includes a primary film layer and a surface protection layer, the surface protection layer has a gloss level of 15 or less, the surface protection layer includes on a surface thereof a ridged portion protruding in a ridged pattern and thus has an irregular shape formed on the surface, the surface protection layer contains an ionizing radiation-curable resin as a main material, the ionizing radiation-curable resin contains as a main component a trifunctional acrylic resin having a repeating structure, the repeating structure is any of an ethylene oxide, propylene oxide, or &ε-caprolactone structure, the number of repetitions of the repeating structure is 3 or more, and vinyl groups contained in the ionizing radiation-curable resin is 20% or less relative to carbonyl groups contained in the ionizing radiation-curable resin.

A method for identifying a moving radiation source by a radiation portal monitoring system is described. The radiation portal monitoring system includes a radiation portal monitor with a plurality of radiation detectors configured to detect ionizing radiation of the radiation source and to generate a detection signal responsive to detection of the ionizing radiation, and at least one processor executing the steps of providing an identification machine learning model; receiving labelled static identification training data generated by radiation detection of a plurality of known static radiation sources; introducing to the static identification training data modifications representing detection signal alterations caused by radiation source movement through the radiation portal monitor to obtain pseudo-dynamic identification training data; training the identification machine learning model using the pseudo-dynamic identification training data; and identifying the moving radiation source from the detection signal using the trained identification machine learning model.

A completely de-energizable defibrillator is provided, allowing the electrical components of the defibrillator to be electrically unbiased while the defibrillator is not in use. The energizing of the defibrillator can be controlled through a power switch interfaced to a relay, with the microcontroller of the AED being able to de-energize the circuitry in case of unintended activation. Additionally, the microcontroller unit of the AED includes features to prevent computational errors due to external influences, electromagnetic interference, radio frequency interference, ionizing radiation, high energy particles, cosmic radiation, and / or solar radiation, or a combination thereof, including one or more pairs of lockstep processors, error detection code, and features that prevent tampering with the microcontroller.

The application provides a semiconductor machine working signal collection method and a semiconductor machine. The semiconductor machine comprises a vacuum reaction cavity used for plasma etching of a wafer. The method comprises: sleeving an electromagnetic shielding ring on a cable of a signal collection module outside the reaction cavity, the cable being used for transmitting working signals of the reaction cavity collected by the signal collection module; generating plasma in the reaction cavity by a source radio frequency power supply; and collecting working signals of the reaction cavity by the signal collection module during a process. The application has the advantage that ionizing radiation of the source radio frequency power supply can be effectively prevented from interfering with the signal collection module, and the accuracy and stability of signal collection are greatly improved.

The application discloses a single-particle reinforced flip-flop circuit, relates to the technical field of circuits, and can solve the problem that in the case that ionizing radiation energy is relatively strong or the size of a flip-flop device is relatively small, the node level subjected to ionizing radiation cannot be recovered by using an existing circuit structure, and thus the flip-flop is subjected to single-particle flipping. The single-particle reinforced flip-flop circuit comprises two latch units which are connected in series, and at least one of the latch units is provided with a delay unit.

Device (1) for detecting ionising radiation comprising: a first set (10) with a plurality of primary floating gate sensors (100) with a cumulative response proportional to a received ionising radiation; a second set (20) with a plurality of secondary floating gate sensors (200) with a cumulative response proportional to the received ionising radiation. The primary sensors (100) have a sensitivity to ionising radiation above a first threshold. The secondary sensors (100) have a sensitivity to ionising radiation above a second threshold lower than the first threshold, whereby the first set (10) is configured to detect ionising radiation in a first range and the second set (20) is configured to detect ionising radiation in a second range, and the first range is lower than the second range.

The object of the present invention is to provide a flooring material that is excellent in stain resistance and stain removal, as well as excellent in slip resistance. [Solution] A flooring material comprising a flooring material body including a resin layer and a surface protective layer on the flooring material body, wherein the surface protective layer includes a cured product of an ionizing radiation-curable resin composition, and the ionizing radiation-curable resin composition includes at least one selected from ionizing radiation-curable silicone-modified urethane (meth)acrylate resin and ionizing radiation-curable fluorine-modified urethane (meth)acrylate resin, and anti-slip particles.

The present invention provides: a decorative sheet having excellent scratch resistance; and a technology that makes it possible to design a decorative sheet with a high degree of flexibility in texture and external appearance. A decorative sheet 1 is provided with a raw fabric layer 2, a primer layer 4, and a surface protective layer 6 in this order, and has a plurality of air bubbles 5 between a surface of the surface protective layer 6 and the raw fabric layer 2. The surface protective layer 6 includes: a first gloss adjustment layer 61 that is provided on the primer layer 4 and that contains a cured product of a first ionizing radiation curable resin; and a second gloss adjustment layer 62 that partially coats the upper surface of the first gloss adjustment layer 61 and that contains a cured product of a second ionizing radiation curable resin. The surface of the second gloss adjustment layer 62 includes a plurality of protrusions, each of which has a ridge shape. A ratio B / A is greater than 1, where B represents the height of the upper surface of the first gloss adjustment layer 61 relative to the lower surface of the primer layer 4 at a position of the plurality of bubbles 5, and A represents the height of the upper surface of the first gloss adjustment layer 61 relative to the lower surface of the primer layer 4 at a position away from the plurality of bubbles 5.

The utility model belongs to the technical field of ionizing radiation detection, and particularly relates to a halide scintillation crystal detector for petroleum logging. The device comprises a shell and a reaction layer, the shell is a sealed shell, a scintillation crystal is packaged in the shell, and a light transmission device is coupled to a light emitting surface, corresponding to the scintillation crystal, of the shell; and the reaction layer is filled between the shell and the scintillation crystal and is used for absorbing water and oxygen. The utility model is used for solving the problem that the scintillation crystal is easy to deliquesce at high temperature. By filling the reaction layer in the shell for sealing and packaging the scintillation crystal, trace water and oxygen in a sealing system are removed by utilizing the reaction between the reaction layer and water and oxygen in the shell, so that the problem of deliquescence of the scintillation crystal caused by reaction between water and oxygen and the scintillation crystal is avoided.

The utility model discloses a support for ionizing radiation detection equipment, which relates to the technical field of auxiliary supports of detection equipment and comprises a stand column, a limiting sleeve is slidably sleeved outside the lower end of the stand column, stabilizing mechanisms are symmetrically arranged on the outer side of the lower end of the stand column, and an adjusting mechanism is arranged at the upper end of the stand column. A fixing table is arranged at the top end of the adjusting mechanism, and a mounting table is arranged on one side of the fixing table. The rotating lead screw drives the lifting rod in threaded connection to move up and down, so that the lifting rod drives the fixed table to move synchronously, and the use height of the support can be adjusted; meanwhile, the detection equipment is conveniently clamped on the mounting table through two groups of clamping plates which are gradually close to each other, so that the detection equipment is not easy to slip off during use, and a swing arm of the detection equipment swings by utilizing damping rotating shafts mounted in the fixed table and the mounting table, so that the detection angle of the detection equipment can be adjusted by utilizing the swing arm, and the detection result is more accurate.

Provided is a decorative sheet having excellent scratch resistance and excellent adhesion between gloss adjustment layers. A decorative sheet (1) is provided with a raw material layer (2) and a surface protection layer, and the surface protection layer includes: a first gloss adjustment layer (5) that is provided on the raw material layer (2) and that contains, as a cured resin product, only a cured product of a first ionizing radiation-curable resin that is a first mixture of an acrylic acid ester and a methacrylic acid ester, and a second gloss adjustment layer (6) that is provided on the first gloss adjustment layer (5) and that contains, as a cured resin product, a cured product of a second ionizing radiation-curable resin that is a second mixture of an acrylic acid ester and a methacrylic acid ester; and a second gloss adjustment layer (6) that partially covers the upper surface of the first gloss adjustment layer (5), contains only a cured product of a second ionizing radiation-curable resin as a resin cured product, and has a specular gloss GS (60 DEG) lower than that of the first gloss adjustment layer (5).

The invention relates to a radiological device comprising an ionizing radiation generator (12) and a detector (14) configured to detect the radiation emitted by the generator (12), the generator (12) and the detector (14) being opposite with respect to each other, the device (10) delimiting a useful volume (60) crossed by the ionizing radiation coming from the generator (12) and received by the detector (14), the generator (12) comprising a plurality of sources (16) distributed along a direction (18) and each emitting an ionizing radiation beam (20) substantially flat and shaped like a fan tail, the sources (16) being arranged to radiate all the useful volume (60) without translation. Another subject of the invention is a method of implementing the device (10) according to the invention, the method comprising the successive ordering of the emission of a plurality of the sources (16).

This relates to a robotic arm combined with a positioning tool that repeatedly and reproducibly positions the body relative to an ionizing radiation therapy beam during treatment. [Solution] A radiotherapy treatment system is provided to assist in the treatment of a subject in an extracorporeal radiotherapy program comprising one or more extracorporeal radiotherapy treatment sessions, the system comprising a robotic arm 400 having a proximal end and an effector end, and a steering guide 300 having a proximal end and a distal end, the distal end having a rigid effector shaft configured to be inserted into a tube of the subject or to be attached to an inserter configured to be inserted into a tube of the subject, and a placement tool 200 configured to move and / or fix the tube for an extracorporeal radiotherapy treatment session in response to the movement of the robotic arm 400.

The application provides application of a small molecule compound YZL-51N in preparation of a SIRT7 selective inhibitor. The application finds that the small molecule compound YZL-51N can be used as a specific small molecule inhibitor of SIRT7. The application verifies that the compound YZL-51N can effectively inhibit SIRT7 deacetylase activity by using polypeptide deacetylation. The application also proves that YZL-51N has stronger interaction affinity with SIRT7 compared with other sirtuins family members by a BLI experiment method. The application verifies that the small molecule compound inserts into a pocket and interacts with hot spot amino acids by a molecular docking experiment. In a cell model, YZL-51N can also specifically inhibit SIRT7 and replenish the substrate. Under ionizing radiation stimulation, the compound can effectively inhibit a SIRT7-ATM cell signal pathway.

Provided is a decorative sheet having low gloss, i.e., excellent design properties, and having high durability, particularly, scratch resistance and stain resistance, and processability. The decorative sheet (1) according to the present embodiment includes a base material layer (2), and a surface protective layer (5) provided on one surface of the base material layer (2), the surface protective layer (5) having a ridge portion provided in a ridge shape on a surface thereof, and having a concave-convex shape, the concave-convex shape of the surface protective layer (5) having an RSm / Ra in a range of 10 or more and 300 or less, and a main material of the surface protective layer (5) being an ionizing radiation-curable resin, a main component of the ionizing radiation-curable resin being a 4-functional acrylic resin including a repeating structure, the repeating structure being any one of an oxirane structure, an oxetane structure, and an ε-caprolactone structure, and a repeating number of the repeating structure being 12 or more.

This invention discloses the application of citrus flavonoids (NOB) or SR1078 in the preparation of drugs to improve salivary gland function, particularly in improving the circadian rhythm of salivary glands damaged by ionizing radiation. Oral administration of a specific dose of NOB or SR1078 can significantly promote salivary gland function. Furthermore, it does not interact with other drugs with anti-inflammatory or regenerative functions. It can be administered as a single dose or multiple times consecutively; it can be administered after injury, and this flexible administration method does not affect the tumor radiotherapy process.

Embodiments of the present invention provide a computer-implemented method of determining a presence of a β-emitting radionuclide in a migratory environment, the method comprising determining (210) an indication of energy distribution of ionizing radiation incident upon a scintillation detector proximal to the migratory environment, determining (220) a ratio of a proportion of the energy distribution of ionizing radiation in a first energy range to a proportion of the energy distribution at a predetermined energy, and determining (230) the presence of the β-emitting radionuclide in the migratory environment in dependence on the ratio.

The invention relates to the technical field of emotion regulation, in particular to a method and system for regulating emotion and social behaviors based on terahertz radiation. According to the technical scheme, the method comprises the following steps: directionally irradiating a head target region of a mammal object with terahertz waves; according to the method, by establishing the clear corresponding relation between the specific terahertz frequency and the emotional behavior regulation effect, the long-standing core problems of parameter chaos and unpredictable effect in the field are solved; based on the characteristics of non-ionizing radiation, a safe novel intervention way capable of avoiding side effects of drugs is provided, and the effectiveness and biological safety of operation are ensured through a safety parameter window verified by experiments; the method provided by the invention can generate a stable and repeatable behavior regulation effect.

For example, a radiation detector may include a bonded die including a plurality of active pixel sensors configured to sense ionizing radiation. For example, the bonded die may include a detection die including a plurality of detection diodes. For example, an active pixel sensor of the plurality of active pixel sensors may include a detection diode of the plurality of detection diodes to generate an electric detection signal based on detected ionized radiation detected by the detection diode. For example, the bonded die may include an electronic-circuitry die bonded to the detection die. For example, a thickness of the electronic-circuitry die may be less than 4 percent of a thickness of the detection die. For example, the electronic-circuitry die may include a plurality of transistors. For example, the active pixel sensor may include one or more transistors of the plurality of transistors to amplify the electronic detection signal.

The present application relates to a kind of safety interlocking methods, specifically, a kind of safety interlocking methods of pulse power device, solve the technical problem that existing safety interlocking system cannot meet single operation pulse power device laboratory strong electromagnetic interference / ionizing radiation, wide range multi-point deployment requirement.The safety interlocking methods of pulse power device, comprising the following steps:1】The equipment in safety interlocking system is classified as high sensitive equipment and low sensitive equipment;The area in safety interlocking system is divided into low interference area and high interference area;2】to low sensitive device in low interference area of safety interlocking system, low sensitive device in high interference area, high sensitive equipment of low interference area, using conventional protection means;To high sensitive equipment in high interference area of safety interlocking system, build reinforced interlocking system;N is greater than or equal to 1 integer;3】operation, to realize the reliable safety interlocking of pulse power device.