1188 results about "Radiation protection" patented technology

A radiation shield and an assembly and a reactor including the radiation shield are disclosed. The radiation shield can be used to control heat flux from a susceptor heater assembly and thereby enable better control of temperatures across a surface of a substrate placed on a surface of the susceptor heater assembly.

Compositions and processes for forming radiopaque polymeric articles are disclosed. In one embodiment, radiation inspection apparatuses and methods are then used to determine the presence and attributes of such radiopaque polymeric articles. A radiopaque polymeric article of the present invention can be created by mixing a radiopaque material, such as barium, bismuth, tungsten or their compounds, with a powdered polymer, pelletized polymer or liquid solution, emulsion or suspension of a polymer in solvent or water. In addition to creating radiation detectable objects, the radiopaque polymeric materials of the present invention can be used to create radiation protective articles, such as radiation protective garments and bomb containment vessels. Enhanced radiation protection can also be achieved through the use of nano-materials. The principals of the present invention can be used to provide protection against other types of hazards, including fire, chemical, biological and projectile hazards.

The invention relates to compound millimicron fibrous membrane material of cellulose and cellulose matrix which can perform the biological degradation and the biological absorption and a preparation method thereof and an industry and medical purpose, and belongs to the biological macro-molecule non woven fabric material field which can perform the biological degradation and the biological absorption. Electrostatic spinning equipment is used to obtain the fibrous membrane material which can perform the biological degradation and the biological absorption, the weight of the cellulose is taken as basic reference, the component of the material comprises cellulose more than 0 and less than or equal to 100 weight parts, other biomacromolecule more than and equal to 0 and less than 100 weight parts, 0 to 10 weight parts of curative drug or 0 to 50 weight parts of inorganic catalyzer and / or 0 to 50 weight parts of inorganic strengthening agent. The material of the invention has good biological compatibility, biological degradation property and degradation absorptivity, and can be used for haemostasia material, wound cladding material, organization engineering supporting rack material, the transportation and release of medicine, artificial skin and blood vessel, and postoperation anti blocking material, beauty material and catalyzer carrier, filtering membrane and radiation protection material and so on.

A system for providing radiation protection is provided that includes a garment that contours to an operator's body. The garment protects the operator from radiation. The garment is supported by a suspension component that reduces a portion of weight of the garment for the operator, the garment including a belt, which includes a release mechanism that offers an entry into the garment. In more specific embodiments, the release mechanism is a quick release that allows the operator to disengage from the garment using a single hand movement. The belt can include at least one flexible joint. The belt opens to allow the operator to enter the garment, and the operator, in entering and exiting the garment, is able to limit his contact to components on or near a front of the garment such that the operator can operate the release mechanism for the garment without losing sterility.

Articles, including fabrics and film layers, are disclosed which can protect against multiple hazards, including radiation, chemical, biological agents, metal projectiles and fire hazards. In some embodiments, the fabrics and films of the present invention are used to produce garments having protection against multiple hazards and superior heat dissipating properties. A radiation protective compound is preferably created by mixing a radiopaque material, such as barium, bismuth, tungsten or their compounds, with powdered polymer, pelletized polymer or a liquid solution, emulsion or suspension of a polymer in solvent or water. This radiation protective mixture can then be laminated or otherwise adhered to other types of protective films or fabric, such as the protective polymer films or fabrics used for chemical protective garments, biological protective garments, bullet proof vests or fire retardant garments. The principles of this invention can also be applied to a broad range of other articles including surgical hoods, hospital gowns, gloves, patient drapes, partitions, coverings, jumpsuits, ponchos, uniforms, fatigues, tents, probes, envelopes, pouches, wallpaper, liners, drywall, house sidings, house foundations, house roofings etc.

Method for preparing, packaging and handling an individual dose of a radiopharmaceutical compound, comprising the following steps: filling a cartridge (1) with said dose of radiopharmaceutical compound via a first end, the second end being closed by means of a component serving as a piston (3); closing said cartridge (1) at said first end by means of a closure device (2); placing said cartridge (1) in a radiation shielding device (10), comprising an inner part (4) and an outer part (5), said inner part serving as radiation shielding for an operator and said outer part serving as a transportation shielding container; closing said container by means of an appropriate shielding lid (6); transporting said container up to the place at which an injection of said radiopharmaceutical compound will take place; removing the shielding lid (6) of the container; fixing a plunger (7) to the cartridge piston (3); extracting the cartridge and the inner part (4) of the radiation shielding device (10) from the outer part (5) serving as a container, and placing injection means (30) on the cartridge end which has the setting closure device (2).

Medical devices, and in particular implantable medical devices, may be coated to minimize or substantially eliminate a biological organism's reaction to the introduction of the medical device to the organism. The medical devices may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. These therapeutic drugs, agents or compounds may also further reduce a biological organism's reaction to the introduction of the medical device to the organism. In addition, these therapeutic drugs, agents and/or compounds may be utilized to promote healing, including the formation of blood clots. Also, the devices may be modified to promote endothelialization. Other compounds may include those that prevent damage from ionizing radiation. Various materials and coating methodologies may be utilized to maintain the drugs, agents or compounds on the medical device until delivered and positioned. In addition, the devices utilized to deliver the implantable medical devices may be modified to reduce the potential for damaging the implantable medical device during deployment. Medical devices include stents, grafts, anastomotic devices, perivascular wraps, sutures and staples. In addition, various polymer combinations may be utilized to control the elution rates of the therapeutic drugs, agents and/or compounds from the implantable medical devices.

The invention discloses a method, a control device and a wireless terminal for reducing the radiation hazard of the wireless terminal, belonging to the field of wireless radiation protection, wherein the method for reducing the radiation hazard of the wireless terminal comprises the following steps: using the control device to detect whether an antenna of the wireless terminal is approached by an object or not; and using the control device to adjust the output power of a wireless terminal transmitter connected with the antenna to the output protection power and reduce the specific absorption rate value of the antenna to the set value if the antenna is detected to be approached by the object. The embodiment of the invention can reduce the radiation of the wireless terminal to a human body. The technical scheme is applicable to wireless communication terminals.

A radiation protection device attaches to the C-arm of a fluoroscope and shields and collimates the X-ray beam between the X-ray source and the patient and between the patient and the image intensifier. One embodiment has a radiation shield of X-ray opaque material that surrounds the C-arm of the fluoroscopy system, the X-ray source and the image intensifier. A padded slot fits around the patient's body. Another embodiment has conical or cylindrical radiation shields that extend between the X-ray source and the patient and between the patient and the image intensifier. The radiation shields have length adjustments and padded ends to fit the device to the patient. The radiation protection device may be motorized to advance and withdraw the radiation shields. A blanket-like radiation shield covers the patient in the area surrounding where the X-ray beam enters the body.

The invention discloses iron-based amorphous alloy powder capable of forming an amorphous alloy coating, and a method for preparing an amorphous coating. The amorphous alloy powder is taken as a raw material, and a complete amorphous coating is prepared by a cold spray method. The alloy powder mainly comprises Fe, Cr and Mo, can contain one or more of Ni, Co, Mn, Si, Re, Al, Cu, Nb, Zr, Ti, C, B and other elements, wherein Fe, Cr and Mo account for over 70 atomic percent of the alloy. The component has a wide supercooled liquid region and high amorphous forming capacity, amorphous powder can be obtained by an atomization powdering technology. In the process of preparing the amorphous alloy coating by the cold spray method, an inert gas such as nitrogen, helium and the like or a mixed gas of the nitrogen and helium is taken as a powder feeding gas and a powder accelerating gas, the temperature T of the inert gas is less than 700DEG C, and the powder feeding pressure P is 1-6MPa. The coating has a great application prospect in the fields such as wear resistance, corrosion resistance, radiation protection and the like.

A radiation protection system for protecting medical personnel from radiation being applied from a radiation source to a patient positioned on a table that includes a radiation-shielding wall including, upper shield suspended by a gas spring lift arm, the upper shield consisting of translucent radiation resistance window, with a left and right side of flexible radiation shielding material, that telescopes down on each side of the table to form a complete radiation barrier. The shield is positioned above the table. The shield also has a radiation-shielding flexible interface attached to the radiation shielding window that covers a portion of the patient.

An improved personal radiation protection system that substantially contours to an operator's body is suspended from a suspension means. The garment is operable to protect the operator from radiation. The suspension means is operable to provide constant force and allows the operator to move freely in the X, Y and Z planes simultaneously, such that the protective garment, face shield, illumination means or other attachments integrated the system are substantially weightless to the operator. A face shield and arm cover can also be incorporated with the system, such that the face shield and arm cover are substantially weightless to the operator. The suspension means may be mounted to the ceiling, a vertical wall, the floor, or on a mobile platform.

A cavity drill is provided, which is configured for use with a bone drill. The cavity drill includes a body. The bone drill has a first portion movably connected to a second portion. A third portion is movably connected to the second portion. The body is mounted with the third portion of the bone drill. A sheath extends from the third portion to a distal end. A curette is connected with the distal end of the bone drill. The curette is composed of retractable cutting tines/blades which are turned/powered by the bone drill motor. The curette tines can be used in a partially or fully deployed state and at low or high speed. The curette is designed to create cavities of varying size in a bone. The cavity drill and the bone drill may include a radiation protection guard and radiolucent portions. Methods of use are also provided.

Aiming at the problems existing in the present cooling and radiation protection technologies of electronic products, the invention provides an SMD (surface mounted device) with cooling and electromagnetic wave absorption functions, which is applied to electronic equipment. The SMD comprises a decoration layer, a cooling and electromagnetic wave absorption layer for cooling and electromagnetic wave absorption and a mounting layer, wherein the cooling and electromagnetic wave absorption layer is arranged between the decoration layer and the mounting layer. The SMD further comprises a protective stripping layer which is arranged below the mounting layer and used for protecting the adhesiveness of the mounting layer, and the stripping layer is taken off before the SMD is used, and then the SMD is mounted at a position needing cooling and electromagnetic wave absorption. Furthermore, the cooling and electromagnetic wave absorption layer is of a structure consisting of more than two layers, including a cooling layer and an electromagnetic wave absorption layer which are independent from each other; accordingly, the cooling and electromagnetic wave absorption layer can be a single-layer structure and is made of a material with cooling and cooling and electromagnetic wave absorption functions. The invention also provides the preparation and application methods of the SMD. The SMD with cooling and electromagnetic wave absorption functions is applied to a shell of electronic equipment, and the shell of the electronic equipment includes but is not limited to a mobile phone shell, a network card, a panel personal computer shell hot spot, a netbook shell hot spot, notebook computer shell hot spot, game equipment and other consumer mobile equipment can improve cooling effect, reduce temperature and weaken electromagnetic wave radiation.

A safe in-ear earphone for radiation protection, comprises earplug heads (1A, 1B), sound cavities (2A, 2B), acoustic wave transmission channels (3A, 3B), a main body (4), a conductor (8) and a plug (9), the channels (3A, 3B) are set between the sound cavities (2A, 2B) and loudspeakers (5A, 5B), the acoustic wave concentrated orifices (10A, 10B) are between the loudspeakers (5A, 5B) and the acoustic wave transmission channels (3A, 3B), assembly of the loudspeakers (5A, 5B), the acoustic wave concentrated orifices (10A, 10B) and the acoustic wave transmission channels (3A, 3B) are sealed to form a sealed small boxes (11A, 11B) in the main body (4). the shape of acoustic wave concentrated orifices (10A, 10B) is inversely conical. The acoustic wave is transmitted to the two acoustic wave channels (3A, 3B) via the acoustic wave concentrated orifices (10A, 10B) and then is provided to the ears plugged by two earplugs to listen. The safe in-ear earphone is used for high frequency magnetic field and intense radiation communication device such as mobile phone.

A multispectral thermal infrared camera system is disclosed. An uncooled thermal imaging camera is equipped with an axially tilted, cooled spectral filter. The axially tilted, cooled spectral filter deflects the radiation emitted by the uncooled camera away from being reflected back into the camera. The axially tilted, cooled spectral filter emits a lesser amount of thermal radiation towards the camera. And the axially tilted, cooled tilted filter is enclosed in a cold radiation shield to minimize the thermal emission that would be reflected by the filter towards the camera and to absorb the radiation deflected by the tilted filter. The axially tilted, cooled spectral filter passes only the desired portion of the thermal infrared radiation from the scene onto the uncooled camera.

A radiation shield includes a radio-opaque drape which has an open area extending completely through the drape to provide a viewing site. Radiation control structure in the form of a vent system is located in the open area. The vent system includes a plurality of radio-opaque slats extending at least partially across at least a portion of the open area. The slats preferably extend outwardly away from the surface of the drape to facilitate the capturing of scattered radiation.

The invention belongs to the technical field of building material and particularly relates to a heat insulating coating, which is composed of the following components: 220-250 parts of water by weight, 2 parts of cellulose by weight, 3.8-4.2 parts of dispersant by weight, 1.4-1.6 parts of SPA 202 antifoaming agent by weight, 1.4-1.6 parts of wetting agent by weight, 1.5 parts of multifunctional assistant by weight, 19-21 parts of propyleneglycol by weight, 180-220 parts of titanium pigment by weight, 75 parts of diatomite by weight, 50 parts of micro hollow glass bead by weight, 380-420 parts of elastic waterproof emulsion by weight, 2-2.5 parts of F111 antifoaming agent by weight, 2.5-3.5 parts of thickening agent by weight and 1.2-1.7 parts of anti-corrosion fungicide by weight. The invention has effects of warm-preserving, heat-insulating, radiation-protection, anti-stripping, waterproofing, fireproofing, anti-cracking, anti-freezing, brushing-resistance and dirt-resistance.

The invention belongs to the technical field of electromagnetic wave shielding materials, and relates to a preparation method for copper-clad electromagnetic wave shielding fabric. The method comprises the following steps of: carrying out hydroxylation, sulfhydrylation and then chemical copper plating on the surface of polyester fabric and obtaining the electromagnetic wave shielding fabric; after the prepared electromagnetic wave shielding fabric is washed by an ultrasonic washing machine, the weight of the fabric is not changed, which shows that the copper plated on the surface and the fabric have good adhesivity, namely the fabric has strong washability; the washed fabric is in the range of 0.01MHz to 18GHz; and the efficiency of the electromagnetic wave shielding is larger than 54dB, namely the rate of radiation protection of the electromagnetic wave is larger than 99.999 percent. The fabric can be widely used for electromagnetic wave radiation-proof clothes and electromagnetic wave shielding of special departments including aviation, aerospace, military industry and communication, etc.

A short use or disposable system and method for adaptive window-capable radiation protection provides a disposable outer covering for securing one or more flexible and overlappable radiation shield members relative to a user using a variety of features including pockets, pocket defining members, fitting aid members, and fixing and releasing points. Features allow conveniently securing multiple layers of reusable shields in disposable coverings and providing pre-selected and assembled shielding kits for specific uses. Variants provide adaptive shielding sheets that may be customized to a particular patient need or injury profile.

Systems and methods of the disclosure can implement intrusion radiation protection (IRP) to prevent malicious IP traffic in a secure network. The IRP system can receive an IP packet, determine that a protocol of the IP packet matches a predetermined policy of a plurality of predetermined policies, classify the IP packet based on the predetermined policy and a size of the IP packet, inspect a payload of the IP packet responsive to the classification to determine features of the IP packet, determine that one of the features of the IP packet is improper based on the classification, and flag the IP packet as suspect based on the determination. The IRP system can log and/or drop the flagged IP packet. The IRP system can additionally replace a payload of the IP packet with a second payload, and transmit the IP packet with the second payload to its destination.

The invention relates to X-ray apparatus test device and method for a truck tire. The device is provided with a measurement, centering and test transmission device with higher automation degree adoptsthe test method for horizontally placing a tire and can drive the tire to rotate at high speed on the premise of ensuring no local deformation. Before a test starts, the precise appearance dimensionmeasurement is carried out on all tested tires. The device mainly comprises a seal radiation protection detecting house, an X-ray detecting and driving device, a detector drive device, a centering androtating device, a rotating support device, a host internal transmission device and an appearance dimension measuring device, wherein the X-ray detecting and driving device positions an X-ray pipe atthe internal center of the tested tire, transmits an X ray and is arranged in the detecting house; the centering and rotating device, the rotating support device and the host internal transmission device are arranged in the detecting house; and the appearance dimension measuring device is connected to the inlet position of the detecting house. The tire is horizontally positioned at the center bythe centering and rotating device, thereby effectively improving the centering precision of the tire.

The invention relates to the technical field of preparation of nuclear radiation shielding materials, especially to a flexible shielding material which is used for shield radioactive parts of a nuclear power station. The shielding material is of a laminate structure and comprises a shielding function layer and protective layers arranged at two sides of the shielding function layer, wherein the shielding function layer is a compounded layer which utilizes irradiation-resistant rubber as a matrix material, absorption neutrons and gamma-ray metal powder are added in the matrix material, and the protective layers are rubber layers. The flexible shielding material is of a sandwich structure, can be applied on the occasion that a traditional radiation protection material cannot be used or is difficult to install, is convenient in on-site installation and later cleaning in a nuclear power station, does not suffer from creep deformation and flowing as a foreplate, can be repeatedly used for a long time and is environment-friendlier and more economic. Moreover, the invention also relates to a preparation method for the flexible shielding material.

A neutron absorbing material and its preparation method relate to a neutron absorbing material and its preparation method. The invention aims to solve the problem that existing spent fuel shielding materials cannot ensure neutron shielding property of a composite material, and plasticity of a composite material can be enhanced. The neutron absorbing material is prepared from, by volume, 10-20% of boron carbide, 1-2% of a neutron absorber and 78-89% of aluminium or aluminium alloy. The preparation method comprises the following steps: 1, weighing; 2, drying; 3, ball-milling and mixing; and 4, cold pressing for blank-making and hot pressed sintering. The neutron absorbing material prepared in the invention has high shielding property, has good plasticity, is easy for machine-shaping, can meet requirements of densification and long-term tendency for spent fuel storage, and is an ideal spent fuel storage grid material. The neutron absorbing material of the invention is used in the field of neutron radiation shielding in nuclear industry.

The invention relates to a decellularization cornea preparation method, which adopts steps of corneal epithelium layer removing, ultraviolet cross-linking, viral inactivation, decellularization treatment, gradient dehydration, radiation protection and sterilization. According to the present invention, the prepared decellularization cornea has characteristics of complete antigen removing, no excitation of host acquired immunity reaction, good biocompatibility, low damage on nature corneal stroma, maintaining of structure characteristics of the nature corneal, and maintaining of effective components of the nature corneal so as to provide physical and chemical properties similar to the nature corneal; and after the prepared decellularization cornea is transplanted, animal experiment results show that characteristics of transparent transplanted cornea, no scar formation, no melting generation and no neovascularization are provided, the transplanted cornea and the recipient bed are completely integrated after transplanting a month, the transplanted cornea is subjected to complete epithelization after three months, corneal stroma cells migrate toward the decellularization cornea graft so as to prove that the tissue just takes place slow reconstruction, and the transplanted cornea after 6 months does not show significant difference in histology and appearance detection compared with the nature cornea.

The invention discloses nickel-base amorphous alloy powder capable of obtaining an amorphous composite coating as well as a laser preparation method of the amorphous composite coating. The nickel-base amorphous alloy powder mainly consists of five elements, such as Fi, Fe, B, Si and Nb and has stronger amorphous forming ability; and meanwhile, the nickel-base amorphous alloy powder is prepared into a laser cladding coating on a low-carbon steel surface in a way of coaxially feeding powder, and then the amorphous composite coating is prepared through a high-speed laser re-melting way. The nickel-base amorphous composite coating provided by the invention is good in compactness, high in amorphous volume content and high in hardness number. The coating has good application foregrounds in the field of abrasion performance, corrosion resistance, radiation protection and the like.

The invention belongs to the radiation dose monitoring technology, and specifically relates to a monitoring method and device for measuring effective dose on real time. The method comprises the steps of manufacturing a simulated human organ or tissue model; performing monte carlo simulation calculation through a computer to obtain absorbing dose of a plurality of points in the organ or tissue model so as to obtain an average value; finding out the points in which the absorbing dose is the same as the calculated average value in the organ or tissue model; arranging a detector on the points corresponding to the organ or tissue model, wherein the measurement result represents the average absorbing dose DT, R of the organ or tissue; calculating the effective dose for a human body by the calculation formula of the effective dose E according to the weight factor wT of the organ or tissue and the selected value of the radiation weight factor wR. With the adoption of the method and the device, the effective dose for workers can be directly measured, and thus the radiation protection can be conveniently optimized.

The invention discloses a triaxial integrated optical fiber gyroscope inert measurement device based on optical source cold standby, and a compensation and installation method. The triaxial integrated optical fiber gyroscope inert measurement device comprises a body, two triaxial shared optical sources, an optical source driving and refrigerating circuit, three framework-free optical fiber loop meter heads, three optical fiber gyroscope signal processing and interference circuit digital boards, a system signal processing and interface circuit digital plate, a secondary power supply module, a frequency and voltage conversion simulation circuit, three electric connectors and a reference mirror. The three optical fiber loops share an optical source, and a standby cold optical source is provided, thus the reliability is high; the installation error correction method used by the invention can effectively reduce the triaxial cross coupling; the circuit boards are installed on a lateral cover and an upper cover for the convenience of radiation protection design; meanwhile, the favorable heat radiation is realized; framework-free optical fiber loops are used, the adaptability of a magnetic environment and a radiation environment is improved.

A radiation shield, which may attenuate nuclear radiation or ionizing particles, may include a non-toxic, radioactivity-attenuating material based on an element or an elemental species having an atomic number of 56 or more. Examples of such materials include barium sulfate and bismuth oxide. A radiation shield may include two or more different radioactivity-attenuating materials, which may attenuate different types of nuclear radiation or ionizing particles, or attenuate different energy ranges of nuclear radiation or ionizing particles. Different radioactivity-attenuating materials may be carried by different layers of the radiation shield. Radiation shields with at least partially superimposed layers are also disclosed. Adjacent layers of such a radiation shield may be able to move longitudinally relative to one another, or slide somewhat relative to each other. Any of these features may be incorporated into a blanket, a protective suit or other protective garment, tape or any other configuration of radiation shield. Pliable radiation shields that attenuate nuclear radiation or ionizing particles are also disclosed, as are methods for limiting exposure to nuclear radiation or ionizing particles.

The present invention relates to methods of stimulating stem cell proliferation and engraftment, and methods of preventing and/or treating disorders associated with radiation exposure, chemotherapy, exposed to chemical/biological warfare agents, and/or any other insults affecting rapidly proliferating tissues in a body, or one or more symptoms thereof. In particular, the present invention provides methods of stimulating stem cell proliferation and/or engraftment and methods of preventing and/or treating disorders associated with one or more insults affecting rapidly proliferating tissues in a body (e.g., radiation exposure, chemical and/or biological insults) or one or more symptoms thereof by administering to a subject a composition comprising a Fibroblast Growth Factor-20 (FGF-20) protein, or its fragments, derivatives, variants, homologs, analogs, or a combination thereof.