48results about How to "Reduce radiation levels" patented technology

Signal repeater system of the general type that facilitates using various standards and various modulation types to improve properties with various infrastructure, in particular power grid systems.

A slot-line planar antenna has a substrate, an outer conductor disposed on one principal surface of the substrate and having an opening defined therein, an inner conductor disposed on the one principal surface of the substrate and positioned within the opening, the outer conductor and the inner conductor jointly defining a looped aperture line therebetween, and an electronic device electrically interconnecting the outer conductor and the inner conductor for controlling an electromagnetic wave field of a slot line provided by the aperture line.

A method is provided for removing radioactive internals structural members in the core of a reactor pressure vessel in a containment vessel. The method includes placing a first cask in a first internals assembly, detaching radioactive first internals structural members from second internals structural members in the first internals assembly, placing the detached first internals structural members in the first cask, placing the first internals assembly in a second cask, and removing the second cask containing the first internals assembly and containing the casked detached radioactive first internals members from the containment vessel. The first internal members may be radioactive baffle plates, and the second internals members may be former plates bolted to the radioactive baffle plates. Novel tooling, framework and fixtures facilitate disassembling, moving and storing the radioactive baffle plates.

A size and / or shape specific 3D-beam modulation filter and a size and / or shape specific immobilizer are provided for cone-beam breast computed tomography (bCT). The immobilizer places the breast on an optimal position in the field of view of the scanner system and the 3D-beam modulation filter modulates the incident x-ray beam in the cone-angle (i.e. z-axis of the detector panel) and fan angle (i.e. x-axis of the detector panel) directions in order to improve equalization of the photon fluence incident upon the detector panel and reduce unnecessary radiation dose that the breast receives. Both the immobilizer and the 3D-beam modulation filter are selected among a plurality of alternatives based on the specific shape, size and / or shape or size of the person's breast.

A method of manufacturing a radiological image detection apparatus having: a scintillator that emits fluorescence upon exposure to radiation; and a photodetecting unit disposed on a radiation entrance side of the scintillator, the method includes: a photodetecting unit production process for layering on a substrate a protective member that exhibits low radiation absorbency than that exhibited by the substrate and forming a thin film portion that detects the fluorescence as an electric signal on the protective member, thereby producing the photodetecting unit; a substrate peel-removal process for peeling and eliminating the substrate from the protective member; and an integration process for integrating the previously-produced scintillator and the photodetecting unit before or after the substrate peel-removal process.

The invention discloses a flexible shielding method for highly radioactive foundation pits, comprising the steps of: step 1) making and processing a matching shielding layer according to the size of the foundation pit on site; step 2) placing radioactive objects in the foundation pit to be shielded Place the shielding layer above; step 3) then fill the shielding material to form an overall shielding layer; shield the radioactive objects in the foundation pit. It successfully solves the problems of high exposure dose, long time consumption, and high material cost in the construction of temporary shields in high-radioactive places. The method of the present invention is feasible, reliable in process, safe and efficient, simple in operation, cost-saving, and reduces the amount of secondary waste generated. It ensures that the radioactive radiation level in the operating area of ​​the staff reaches an acceptable value, so that the construction work in this area can be successfully completed.

The invention relates to a hollow T-shaped power supply rail applicable for wireless power supply to an electromobile and a rail device containing the power supply rail, belonging to the technical field of wireless power transmission and aiming at achieving the purpose of improving system performance during wireless power supply to the electromobile. In the hollow T-shaped power supply rail applicable for wireless power supply to the electromobile, magnetic poles are hollow blocks with rectangular cross sections, and the two ends of the top side of the rectangle simultaneously extend outwards; the bottoms of all magnetic poles are fixed on a magnetic core, all magnetic poles are sequentially arranged along the length direction of the magnetic core, and the distance between adjacent two magnetic poles is equal; the bottom width of the magnetic pole is equal to the width of the magnetic core; a power supply cable is divided into a left-side cable and a right-side cable; the left-side cable is wound around all magnetic poles in a sine wave manner; the right-side cable and the left-side cable are wound around all magnetic poles in a mirror symmetric manner; and the left-side cable and the right-side cable are connected at one end of the rail. The hollow T-shaped power supply rail is applicable for the field of wireless power supply to the electromobile.

The invention discloses an irradiation experimental device for a pulse reactor. A radial duct is formed in the pulse reactor. The radial duct comprises a duct outlet. A neutron trap is arranged inside the radial duct; a shielding body is arranged outside the radial duct; and a passing hole is formed in the shielding body. The irradiation experimental device comprises a movable shielding cover, a shielding storage rack, a double-screw synchronous drive mechanism and an elevator, wherein the shielding storage rack is arranged at a position, which avoids an area of the passing hole, above the shielding body; the shielding storage rack is used for placing shielding irradiation cavities of different specifications; the elevator comprises an elevator car; and when the elevator car is located in the bottom-most layer, an opening of the elevator car is opposite to the duct outlet. According to the irradiation experimental device disclosed by the invention, the double-screw synchronous drive mechanism is used to drive the elevator car to move, so that automatic transfer and storage can be achieved in the shielding storage rack and the duct outlet, thereby achieving replacement and storage of a plurality of sets of experimental devices in a small experimental space, and also ensuring the radiation protection safety of laboratory personnel.