189 results about "Ionized radiation" patented technology

In the case of forming a fine resist pattern, it is desired to further reduce the roughness of the resist pattern.SOLUTION: A substrate processing apparatus comprising: a heat treatment unit configured to bake a resist film; an exposure unit configured to irradiate the resist film having a portion irradiated with a first radioactive ray with a second radioactive ray; a development unit configured to form a resist pattern by development for removing a part of the resist film; and a control unit configured to control the exposure unit such that the second radioactive ray is collectively irradiated to an entire region of the resist film including the portion irradiated with the first radioactive ray and a portion other than the portion irradiated with the first radioactive ray. The first radiation is ionizing radiation or non-ionizing radiation, and the second radiation is non-ionizing radiation. When the first radiation is non-ionizing radiation, the second radiation is non-ionizing radiation having a wavelength longer than the wavelength of the first radiation. The resist film includes a metal oxide photoresist material.SELECTED DRAWING: Figure 1

The invention relates to the technical field of ionization radiation detection, in particular to an ionization chamber detection device, a measurement system and a use method. An ionization chamber detection device comprises: a housing having an accommodation space in which a mixed reaction gas is accommodated; the at least one separating polar plate is arranged in the accommodating space, and the separating polar plate is used for separating the accommodating space into at least two sections of detection cavities; the at least two signal collecting polar plates are respectively arranged in different detection chambers; and the at least two signal transmission lines are respectively connected with different signal collecting polar plates, one end of each signal transmission line is connected with the signal collecting polar plate, and the other end of each signal transmission line extends out of the shell and is suitable for being connected with a data collecting and processing unit. The invention provides an ionization chamber detection device, a measurement system and a use method, and aims to solve the problem that a conventional ionization chamber is generally used for intensity and dose measurement of regional radiation and is not suitable for position sensitive detection of a space smaller than the sensitive volume of the ionization chamber.

The invention discloses an application of a pyrrosia lingua aqueous extract in preparation of a medicine for preventing and treating radioactive intestinal injury. Radioactive intestinal injury is a common complication of ionizing radiation, and has main pathological characteristics of intestinal mucosal barrier destruction, excessive release of inflammatory factors, increase of oxidative stress level and hematopoiesis and immune function inhibition. At present, no effective and safe prevention and treatment medicine is available. It is found for the first time that the pyrrosia lingua aqueous extract can inhibit expression (IL-6, TNF-alpha and IL-1beta) of inflammatory factors of radiation-induced MODE-K cells and relieve the oxidative stress level (malondialdehyde (MDA) is reduced, and the content of superoxide dismutase (SOD) and glutathione (GSH) is increased). In animal experiments, the pyrrosia lingua aqueous extract can reduce the levels of TNF-alpha and IL-1beta inflammatory factors in serum of irradiated mice and improve oxidative stress disorders such as MDA increase, SOD and GSH decrease and the like; the reduction of leukocytes and lymphocytes is relieved; the length of intestinal villus is promoted and recovered; the proportion of Ki67 positive cells in a crypt region is increased, so that the regeneration capacity of intestinal epithelial cells is enhanced. The pyrrosia lingua aqueous extract disclosed by the invention provides an experimental basis and an application prospect for developing a novel medicine for preventing and treating the radioactive intestinal injury.

This application proposes methods for synthesizing aromatic compounds using ionizing radiation based on N₂O, and methods for synthesizing aromatic compounds using industrial waste gas. The method includes: placing benzene and a combined gas containing N₂O in a sealed container, and adjusting the volume of the combined gas to bring the benzene in the sealed container to its saturated vapor pressure; irradiating the sealed container with radiation to cause the benzene to react and yield the aromatic compounds, wherein the radiation includes X-rays, gamma rays, or electron beams, the energy range of which is 0.0110 MeV, and the absorbed dose rate is 0.1 Gy / min to 1000 kGy / min. This method can synthesize aromatic compounds such as phenol in one step using ionizing radiation based on N₂O without the use of a catalyst, achieving precise and high-value utilization of N₂O.

Provided are methods and compositions for enhancing radiotherapy in various cancers by administering dopamine receptor (DRD2)‐binding phenylpiperazine derivatives such as brexpiprazole, cariprazine, pipamperone, and perospirone. In vitro studies show that combining these agents with ionizing radiation (e.g., 5 Gy) significantly reduces cancer cell survival, suppresses metastatic and stemness markers (e.g., CD44, MMP‑2, Snail, Nanog), and promotes apoptosis. Fractionated or single‐fraction radiation regimens can be paired with DRD2 antagonists to lower treatment‐resistant phenotypes, decrease the likelihood of recurrence, and potentially reduce necessary radiation dosages. The approach applies to breast, prostate, lung, pancreatic, and brain cancers, among others. Depending on tumor characteristics, additional chemotherapeutic or immunotherapeutic agents may further improve outcomes.

The present disclosure relates to physically crosslinked closed cell continuous multilayer foam structures comprising at least one foamed polypropylene / polyethylene layer having a TPU overlay. A multilayer structure comprising at least one layer of a foam composition and at least one layer of a cover composition may be co-extruded, the co-extruded structure is irradiated with ionizing radiation, and the irradiated structure is continuously foamed.

The invention relates to the technical field of radiation protection, in particular to personal protection equipment for radiation detection, which comprises a helmet body, a support ring, connecting cloth and a protection component, and the protection component comprises an assembly groove, two standby grooves, a filter element, a magnetic annular unit, a lifting pushing unit and a transverse pushing mechanism. The lifting pushing unit drives the filter element needing to be replaced to move downwards, the filter element is pushed into the magnetic attraction annular unit through the transverse pushing mechanism and driven to the outside of the assembling groove through the magnetic attraction annular unit to be cleaned, and meanwhile the unused filter element is pushed out of the standby groove to be used in a linkage mode. After the external filter element is cleaned, the filter element is put into the assembly groove again for use; therefore, the working efficiency of ionizing radiation monitoring is remarkably improved, meanwhile, radioactive cross contamination of working places or workers caused by the fact that the workers need to enter and exit a high-activity area, a low-activity area, a clean area and other related areas of a non-sealed radioactive substance working place when the filter element is replaced is avoided, and therefore the physical health and life safety of the radiation workers are ensured.

The application discloses application of a cerium monatomic functional material in preparation of a tumor radiotherapy sensitizer. SA In the material, cerium is dispersed on a nitrogen-doped carbon carrier in a monatomic form and forms a stable coordination structure with N / O. The application determines the structure-activity relationship of the unique physical and chemical structure and multiple enzyme activities, verifies the radiotherapy sensitization effect and biological safety in and out of the body. The material has multiple enzyme activities such as simulating peroxidase and glutathione oxidase, can efficiently catalyze ROS and consume GSH, and enhances DNA damage and apoptosis induced by ionizing radiation. In vitro clone formation experiments show that the radiotherapy sensitization ratio reaches 1.38, which is better than that of CeO2 nano clusters (1.17). In vivo experiments on tumor-bearing mice prove that the material combined with radiotherapy can significantly inhibit tumor growth, prolong survival time, and has good biocompatibility. The application provides a new strategy of high efficiency and low toxicity for tumor radiotherapy sensitization, and has a good clinical application prospect.

To provide a decorative sheet having sufficient flaw resistance and hard to generate a crack at the time of bending.SOLUTION: The decorative sheet 1 includes a thermoplastic resin base material sheet 11, a picture pattern layer 12 formed on the thermoplastic resin base material sheet, a transparent thermoplastic resin layer 13 formed on the picture pattern layer, and a surface protective part 20 formed on the transparent thermoplastic resin layer. The surface protective part contains a base resin and a low gloss agent, and has a first protective layer 21 formed on the transparent thermoplastic resin layer and a second protective layer 22 formed on the first protective layer. The base resin of the second protective layer includes a curable resin containing at least one of a thermosetting resin and an ionizing radiation curable resin, and a mixed curing agent obtained by mixing a curing agent in which hexamethylene diisocyanate nurate type and xylylene diisocyanate are mixed and a curing agent having a longer side chain attached to a six-membered ring than the hexamethylene diisocyanate nurate type at a mass ratio of 1:1.SELECTED DRAWING: Figure 1

The present invention relates to nanoparticles of a metal chosen from among platinum, bismuth or a mixture thereof, which are functionalised at their surface by functionalised polyethylene glycol, comprising in particular at least one OH, COOH, NH2 or SH functional group, and to their method of preparation, which comprises of the following steps:a) Mixing a precursor of nanoparticles with a functionalised polyethylene glycol, in particular comprising at least one OH, COOH, NH2 or SH functional group, in water;b) Exposing the mixture to ionising radiation.

The utility model discloses an ionizing radiation monitor with a protective structure, and relates to the technical field of monitors. The monitoring instrument comprises a monitoring instrument body; the number of the protection shells is two, the two protection shells are symmetrically distributed and arranged on the two sides of the monitor body in a sleeving mode, and a fixing assembly is installed between the two protection shells and used for fixing the two protection shells to the monitor body; the number of the damping assemblies is multiple. Through the synergistic effect of the protection shell, the fixing assembly, the damping assembly and the rubber pad, all-around protection of the monitor body is achieved, the protection shell provides external hard protection, the damping assembly and the rubber pad provide buffering and damping, the safety and stability of the monitor when the monitor falls off accidentally or is impacted are ensured, and the monitor is safe and reliable. Therefore, the service life of the monitor is prolonged, and the reliability and practicability of the monitor in a severe environment are improved.

The present invention relates to a radiation shield (1) for protecting an operator from ionizing radiation, the shield (1) comprising a front wall structure (2) made of one or more radiation-resistant materials and a side wall structure (3) made of one or more radiation-resistant materials, which are connected to each other at a vertical or substantially vertical corner edge (4), the shield (1) comprising a base (5) equipped with wheels (6) resting on the ground. Furthermore, according to the invention, the shield (1) is characterized in that the front wall structure (2) comprises a lower portion (21) and an upper portion (22) movable relative to each other, the upper portion (22) of the front wall structure (2) being mounted to pivot about a vertical or substantially vertical pivot (7) in the region of the corner edge (4).

The utility model discloses an anti-radiation lead sliding door which comprises a concrete wall body arranged at the top of a concrete ground, a hanging bar is fixedly installed at the top of the concrete wall body, a keel is installed at the bottom of the hanging bar, and the bottom of the keel is fixedly connected with a double-layer paper surface gypsum board through screws. A white antibacterial inorganic coating is laid at the bottom of the double-layer gypsum plaster board, a flame-retardant board base layer is installed on the right side of the concrete wall body, and a grain ice fire board is laid on the surface of the flame-retardant board base layer. The double-layer paper surface gypsum board, the white antibacterial inorganic coating, the first black wiredrawing stainless steel, the barium sulfate coating layer and the second black wiredrawing stainless steel are used in cooperation, the overall attractiveness of the ionizing radiation lead sliding door after installation can be improved, the whole installation is easy, construction of workers is facilitated, and through the arrangement of the sliding door limiter, the service life of the ionizing radiation lead sliding door is prolonged. Sliding of the ionizing radiation lead sliding door can be limited, so that the ionizing radiation lead sliding door slides according to a limited track.

The invention relates to a preparation process of near-infrared fluorescent powder, in particular to nickel-containing near-infrared fluorescent powder and a preparation method thereof, a certain amount of barium carbonate, gallium oxide, nickel oxide and isopropanol are taken to be prepared into turbid liquid, and the nickel-containing barium gallate-based near-infrared fluorescent powder is prepared through the steps of grinding, drying, grinding, pressing, heat treatment, cooling, grinding and the like. Under the excitation of 635 nm light, the fluorescent powder presents ultra-wide band near-infrared luminescence composed of 1050-1400 nm light emission derived from matrix defects and 1300-1800 nm light emission of Ni < 2 + > ions; the light-emitting diode light source is more suitable for compact special near-infrared fluorescent powder conversion light-emitting diode light source design for high-resolution deep biological tissue imaging diagnosis equipment. Similarly, due to no ionizing radiation ultra-wide band NIR-II region emission, the system can be used in various biological tissue situations such as fat, muscle, endothelium and the like, and then development of multipurpose imaging diagnostic analysis technologies and equipment which are suitable for family daily medical treatment and are friendly and safe to special groups such as children, pregnant women, old people and the like can be promoted.

The present application relates to the technical field of medicine, and discloses application of gastrodin in preparation of medicine for preventing and treating radioactive liver injury, wherein the radioactive liver injury is liver injury caused by ionizing radiation exposure. It is found that the gastrodin can effectively intervene in specific mechanism of the radioactive liver injury, significantly reduce the mortality of the radioactive liver injury mice, reverse the hepatic veno-occlusive disease and the core pathological features of liver fibrosis of the radioactive liver injury, and more specifically treat the radioactive liver injury. On the other hand, the gastrodin can be used before radiation exposure to prevent serious radioactive liver injury after radiation exposure.

This invention relates to the field of shielding materials, and more particularly to a natural rubber-based ionizing radiation shielding material and its preparation method. The material comprises the following components: natural rubber: 60-80 parts; nano-boron carbide: 5-15 parts; nano-high-density metal powder: 15-23 parts; modified gadolinium oxide: 3-10 parts; plasticizer: 3-8 parts; vulcanizing agent: 1-3 parts; accelerator: 0.5-2 parts; antioxidant: 1-2 parts. This invention can effectively shield ionizing radiation while retaining the high elasticity and flexibility of natural rubber, and possesses good processing performance and low cost, thus meeting the diverse needs of different fields for ionizing radiation shielding materials.

The invention belongs to the technical field of radioactivity detection, and particularly relates to a capacitive MEMS miniature high-dose radiation detection device and method and application, the device comprises a sensitive structure layer, a bonding layer and a bottom plate layer, the bonding layer is located between the sensitive structure layer and the bottom plate layer, and the sensitive structure layer, the bonding layer and the bottom plate layer define a closed vacuum cavity (5); a polymer material (9) is arranged in the vacuum cavity (5), and the amount of gas released by the polymer material (9) is in direct proportion to the received ionizing radiation dose. The sensitive layer elastic thin film is thin, deformation generated by pressure change of the vacuum cavity mainly occurs at the sensitive layer elastic thin film, the deformation quantity of the sensitive layer capacitance polar plate is small, and the linearity between the capacitance value variable quantity and the ionization radiation dose variable quantity is effectively improved.

The invention belongs to the field of ionizing radiation and electromagnetic radiation, and particularly relates to a system electromagnetic pulse effect test method and system and a storage medium. The invention provides a system electromagnetic pulse effect signal test method. The method does not need to measure the electromagnetic pulse effect of the system in an electromagnetic shielding structure. Through filtering, separation, spectrum decomposition and clustering and signal reconstruction of signals, extraction of the electromagnetic pulse effect of the system is realized, and complexity of measurement of the electromagnetic pulse effect of the system is effectively reduced. The electromagnetic pulse effect of the system can be measured in a non-electromagnetic shielding environment, and the complexity of the test system is effectively reduced. And the accuracy of the electromagnetic pulse effect test of the system is improved. And meanwhile, the actual situation that the signals are distributed differently in different time periods is considered, and the influence of large time domain signal change on the signal extraction accuracy can be effectively solved. According to the method, different frequency components are clustered, the signal spectrum is constructed, and the accuracy of electromagnetic pulse extraction of the system is ensured.

Methods of treating or preventing an injury or related disease caused by ionizing irradiation exposure, including by photon, particle beam radiation, or both, in a subject in need thereof, the methods comprising administering to the subject a therapeutically effective amount of a surfactant, preferably an amphiphilic block copolymer or one or more of amphiphilic block copolymer polypeptide composites.

The invention discloses a material-level forward radiation-proof reinforced gallium oxide MOSFET and a preparation method thereof. The preparation method comprises the following steps: growing a gallium oxide buffer layer and a channel layer on an iron-doped gallium oxide semi-insulating substrate layer; performing ionizing radiation regulation and control on the beta-Ga2O3 epitaxial material to generate an optimized beta-Ga2O3 epitaxial material; preparing a source electrode and a drain electrode at two ends of the gallium oxide channel layer; a plurality of uniformly distributed [102] crystal orientation trapezoidal grooves are etched in the oblique fin gate region along the gate width direction; preparing passivation layers on the inner walls, close to the drain electrode and the source electrode, of the gallium oxide channel layer and the trapezoidal groove; preparing a first dielectric layer on the gallium oxide channel layer; preparing a second dielectric layer on the first dielectric layer; and preparing a gate electrode on the second dielectric layer of the inclined fin gate region and the part of the channel outside the inclined fin gate. According to the invention, the side wall depth of the oblique fin gate three-dimensional structure is increased, and the probability of material degradation caused by particle incidence into the MOS sensitive region is reduced; and [102] crystal orientation trapezoidal oblique fin gate design reduces the working temperature and peak electric field of the device, and alleviates the influence of radiation on the degradation of the device.

This invention discloses an ionizing radiation protective adhesive and its preparation method. The ionizing radiation protective adhesive comprises the following components by mass percentage: 0.5%~1.5% guar gum powder, 0.25%~1% borax, 5%~10% humectant, 0.1%~0.5% preservative, 1%~20% bismuth oxide, 1%~20% lanthanum oxide, 0%~0.1% fragrance, and the balance being deionized water. This invention's ionizing radiation protective adhesive achieves seamless skin coverage, can be shaped arbitrarily, and greatly increases comfort. It is highly suitable for radiation shielding of local organs or tissues during radiological diagnosis and treatment, especially for local shielding in X-ray diagnosis of infants and young children, demonstrating strong practicality.

The utility model discloses a kind of ionizing radiation detector with protective structure, comprising: main unit, including shock attenuation box, shock attenuation box is provided with protective box, first cover is provided on protective box, second cover is provided on protective box;Working unit, including the shock attenuation component of being set on shock attenuation box, shock attenuation box is fixed with damper, lifting groove is opened in protective box, detector is provided on protective box, first cover is provided with buckle component, the utility model is realized effective damping effect by equipment through shock attenuation box and shock attenuation component, sliding block moves in sliding slot, and by pad and damper absorption and mitigation from external vibration, ensure the stable operation of equipment, prolong service life, when encountering external collision, sliding block moves through sliding slot, in combination with the damping effect of damper, impact can be effectively reduced, ensure that equipment is not affected.

The invention relates to the technical field of wastewater treatment, in particular to a composite wastewater treatment device based on ionizing radiation, which comprises an ionizing radiation module and an energy recovery module. And the ionization irradiation module is used for performing irradiation treatment on the flowing water body. The flowing water body is waste water flowing downwards along the inner wall of the reactor from the high position in a water film mode. The energy recovery module is arranged at the bottom of the flowing water falling area and used for converting kinetic energy generated by falling of the flowing water into electric energy and conducting energy storage or real-time power supply. The ionizing radiation water treatment and the water potential energy power generation technology are integrated, so that the problems of high energy consumption, complex system, low resource recovery rate and the like generally existing in the existing high-salt organic wastewater treatment technology are solved.

The invention belongs to the field of blood glucose detection, and relates to a high-sensitivity blood glucose noninvasive detection method and system based on polarized terahertz photoacoustic, which combines the advantages of terahertz wave band detection and photoacoustic detection, fully utilizes the chiral characteristics of glucose molecules, and adopts polarized terahertz photoacoustic to detect the blood glucose concentration. Polarization optical rotation change information is extracted through the time domain photoacoustic signal; by selecting the characteristic absorption wave band of glucose and utilizing the difference between glucose and other blood components in chiral characteristics, the influence of water and other high-concentration ions on terahertz signals is remarkably reduced, so that the selectivity and the anti-interference capability of blood glucose detection are effectively improved; terahertz non-ionizing radiation is adopted as an excitation source, no ionizing injury risk is caused to a human body, and the device is suitable for long-term repeated detection and is expected to be popularized and applied in wearable or bedside monitoring equipment.

The current invention relates to a combination therapy comprising administering the antimitotic agent ABT-751 to a subject and delivering ionizing radiation to the same subject for the treatment of a brain tumor. Provided is for ABT-751 and ionizing radiation for use in such treatments.

The application provides a planetary exploration strong radiation environment progressive ionizing radiation shielding protection method, which comprises the following steps: according to a planetary exploration task, carrying out space radiation environment analysis, forming an ionizing total dose depth curve table, and formulating a space environment protection design requirement; collating total single machine anti-total dose capacity indexes, and forming a single machine anti-ionizing radiation capacity statistics table; confirming a protection level of matching of each single machine and the space environment protection design requirement; forming a strong radiation environment progressive shielding protection single machine list; evaluating an effect of the progressive ionizing radiation shielding protection strategy; formulating a progressive ionizing radiation shielding protection implementation scheme, and clearly defining single machine protection levels, shielding protection strategies, platform layouts and guarantee conditions, and forming an engineering implementation scheme. The application provides a strong radiation environment protection method for the ionizing radiation protection requirement of the planetary exploration task, and can be applied to engineering and implementation.

A method of detecting alpha particles may include providing a layer of a scintillating slurry comprising a granular scintillating material in water onto a measurement surface of a sample; positioning the sample having the scintillating slurry within a detection chamber of detection apparatus; detecting photons produced by the granular scintillating material in the scintillating slurry when the granular scintillating material is excited by ionizing alpha radiation emitted by alpha particles within the sample using a photon detector and generating a corresponding output signal; and removing the sample and the scintillating slurry from the detection chamber.

The invention provides an astaxanthin composite emulsion for resisting ionizing radiation intestinal injury and a preparation method thereof.The preparation method comprises the steps that firstly, sea cucumber peptide and fucoidin are mixed and stirred in water, the obtained mixture is placed in a water bath kettle to react, dialysis and freeze drying are conducted after the reaction is finished, and a Maillard reaction compound is obtained; the preparation method comprises the following steps: mixing astaxanthin and DHA algal oil, stirring in a dark place overnight, centrifuging to remove insoluble substances, and collecting supernate to obtain an astaxanthin DHA algal oil solution; and redissolving the obtained Maillard reaction compound, mixing the redissolved Maillard reaction compound with an astaxanthin DHA algae oil solution, carrying out full vortex treatment, and then carrying out high-speed homogenization treatment to obtain the astaxanthin composite emulsion. According to the method, an astaxanthin-loaded Pickering emulsion delivery system is prepared by utilizing the interfacial activity of a Maillard reaction product of sea cucumber peptide and fucoidin, the system realizes covalent binding of the sea cucumber peptide and the fucoidin, the water solubility and the stability of the astaxanthin are improved, and meanwhile, the astaxanthin-loaded Pickering emulsion is prepared. The application of astaxanthin in health food and synthetic drugs for preventing ionizing radiation damage is widened.

A device for detecting ionizing radiation, the device including a main body provided with an internal cavity having axial symmetry around a central axis; a plurality of detection elements being structured to be placed at a respective electrical voltage difference with respect to the main body to generate a respective charge signal representative of an amount of electrical charge collected by the detection element, wherein the detection elements are arranged inside the internal cavity spatially separated from each other and in spatial sequence along the central axis, and wherein each detection element has axial symmetry around the central axis.

The present disclosure provides a protective film which comprises a resin base material and a surface protective layer that is disposed on one surface of the resin base material. The surface protective layer contains a cured product of at least one of an ionizing radiation-curable resin and a thermosetting resin, has a thickness of 3.0-15 μm inclusive, and has a nanoindentation hardness of 100-350 MPa inclusive.