39results about How to "Improve radiation quality" patented technology

A radiation imaging apparatus, comprising a sensor array in which a plurality of sensors configured to output signals corresponding to irradiated radiation, a detection unit configured to detect radiation, a driving unit configured to drive the sensor array, so as to initialize the plurality of sensors for each row repeatedly at least until the detection unit detects irradiation of radiation and to read out signals from the plurality of sensors for each row sequentially, and a processing unit configured to process signals from the sensor array, so as to correct a signal from the sensor on a row, of the plurality of sensors, which has been initialized during the irradiation of radiation, based on a timing of the initialization.

A system, method and device for treating tumor cells utilizing a resorbable therapy seed made up of microspheres containing a beta- or alpha-particle-emitting radiation source and a resorbable polymer matrix. These seeds are implanted within the tumor and then rapidly dissolved so as to release the microspheres from the polymer matrix. These microspheres then spread within a preselected target area and provide radiation therapy in a predetermined amount and at a preselected rate according the specific needs and necessities of the users. The configuration of the microspheres, the types of radiation provided and the location and use of these microspheres provides desired localized treatment to target cells while preferentially avoiding or minimizing undesired damage to surrounding tissue. The present invention provides a method for making the seeds, as well as a method for utilizing the seeds as a part of the treatment method.

A disk braking device for a motorcycle ensures radiation quality of a disk plate and reduces friction member abrasion of a friction member. A plurality of through-holes are formed in the disk plate and a plurality of notches are formed at peripheral edges of the disk plate. The through-holes are arranged so that one of the through-holes or less is disposed on a radial line extending from the center of the disk plate.

A mobile terminal includes a terminal body, a metal case forming an appearance of the terminal body and including a side region and a second region integrally formed with the side region and supporting the inside of the terminal body, and a rear molding part formed in a region of the metal caser. The rear molding part includes a first molding region formed to have a closed loop shape along an inner surface of the side region and a second molding region extending from the first molding region and forming a receiving space for receiving at least one electronic component. The side region includes a plurality of opening holes, and the first molding region is formed to cover the plurality of opening holes.

The invention discloses a method for removing large-area thick clouds for optical remote sensing images through multi-temporal data. If large-area clouds exist in optical remote sensing images, and non-cloud data exist in other multi-temporal images in the areas, cloud area data can be repaired and reconstructed through complementary information of the data. The method comprises using all temporal non-cloud data for dictionary learning, taking relevance among images into account adaptively, learning an over-complete dictionary and optimal sparse representation coefficients of the images, and repairing and reconstructing the data in thick cloud areas. According to the method for removing large-area thick clouds, the different complementary information in multi-temporal image thick-cloud areas is used, relevance of the images serves as the weight, the image thick-cloud area data are filled by aid of a novel sparse representation theory, and accordingly, not only the high accuracy is obtained, but also the idea for removing large-area thick clouds is expanded, and an important practical significance is provided.

An embodiment of the present application provides an antenna assembly, an electronic device, and an antenna control method, wherein the antenna assembly includes a first antenna structure and a second antenna structure, wherein the first antenna structure and / or the second antenna structure are provided with a matching circuit, The matching circuit includes a variable capacitor; the capacitance value of the variable capacitor is switched according to the current working resonance frequency of the first antenna structure and / or the second antenna structure, so that the first antenna structure and the The resonant frequencies differ between the second antenna structures. In the embodiments of the present application, variable capacitors are used to adjust the resonant frequency of the antenna, so that the resonant frequencies of multiple antennas are different, thereby reducing interference between multiple antennas, and further improving radiation quality of the antennas.

An antenna structure, comprising a radiating part, a grounding part, a feed-in part, a metal frame and a first matching circuit, the metal frame has a first breakpoint, and the first breakpoint forms a first breakpoint on one side of the metal frame. a radiating section, the radiating section is connected to the feed-in section and the grounding section and arranged at intervals inside the metal frame, and is electrically connected to the first radiating section, and one end of the first matching circuit is electrically connected to The first radiating section is close to one end of the first breakpoint, the other end of the first matching circuit is electrically connected to the ground part and connected to the ground, and the feeding part feeds current to the radiating part, the Both ends of the first radiation section and the first matching circuit are used to excite radiation signals in the first frequency band. Also provided is a wireless communication device with the antenna structure.

The invention discloses a method for measuring relative radiance of large-scanning angle sliding spotlight SAR satellite systems. The method comprises the steps of: selecting a uniform scattering scene as an imaging area; carrying out imaging and range attenuation correction on echo data to obtain single-looking complex image data; getting rid of non-uniform scattering area in the image so as to eliminate adverse effect of subsequent relative radiance measurement; smoothing the image by utilizing a certain rectangular window so as to reduce the noise influence and obtain an amplitude image; averaging multiple images with same beam positions to further reduce the noise influence; determining an azimuth angle and a lower visual angle corresponding to each pixel of the smoothed amplitude image according to radar parameters such as an azimuth scanning range, a range beam width and the like of radar; and carrying out even-order tow-dimensional surface polynomial fitting on the smoothed amplitude image by taking the azimuth angle and the lower visual angle as variables, so as to obtain relative radiance of a system. By utilizing the method, high-precision measurement results for relativeradiance of large-scanning angle sliding spotlight SAR satellite systems can be effectively obtained, so that the method can be used for relative radiation correction of the systems so as to improvethe image quality.

A novel evanescent-wave quartz-enhanced optical microfiber photoacoustic gas sensor is provided for detecting trace amounts of gas. Both fiber-taper based evanescent field and photoacoustic spectroscopy can be used to exploit the merits of both technologies. The use of a fiber half-taper into the tuning fork and microresonator tubes can result in reduced system size, simplified optical alignment, and high sensitivity. The techniques described can be used in chemical, biological and environmental sensing applications.

A beam shaper according to an embodiment of the present invention for a light source arrangement for generating a radiation profile includes a multitude of adjacently arranged optical beam-shaping elements, each belonging to one type of a plurality of different types with different optical characteristics. When illuminated together, the beam-shaping elements effect the radiation profile of the beam shaper and each include an intensity-modulating element and a refractive element.