Abstract: Embodiments of the present application provides a ray scanning apparatus, which includes: a conveying device for conveying an object under inspection to pass through a scanning region of the ray scanning apparatus; a ray source assembly including a plurality of ray source modules, each of the ray source modules including at least one ray source point emitting a ray beam; and a detector assembly for detecting rays transmitting through the object under inspection during scanning and including a plurality of detector sets.

Abstract: A negative electrode plate, an electrode assembly, a battery cell, a battery, and an electrical device are disclosed. The negative electrode plate includes: a negative current collector and a negative active material layer disposed on the negative current collector. A plurality of pore channels are disposed in the negative active material layer. The technical solution of this application reduces lithium plating on a surface of the negative electrode plate, and reduces the possibility of lithium dendrites growing and piercing the separator, thereby enhancing reliability of the battery.

Abstract: The disclosure provides a high-efficient swift stepless layering water intaking gate device, is including setting up the water intaking gate slot of the relative setting of the inlet port both sides on the dam body, its characterized in that: a plurality of sections of door leaves are arranged in the water taking gate groove from bottom to top; all the door leaves in the water intaking gate groove are divided into a group, and the adjacent door leaves are connected by adopting an internode connecting plate to form an integral water intaking gate; or all the gate leaves in the water intake gate groove are divided into a plurality of groups to form a plurality of sets of stop log type water intake gates, each set of stop log type water intake gate is provided with a plurality of sections of gate leaves.

Abstract: A ray scanning apparatus, including: a conveying device; a ray source assembly including a plurality of ray source modules arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area; and a detector assembly including a plurality of detector sets arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area, where the opening of the non-enclosed structure of the ray source assembly is opposite to the opening of the non-enclosed structure of the detector assembly, the plurality of detector sets are fixed in a same plane perpendicular to the conveying direction of the object under inspection, and the plurality of ray source modules of the ray source assembly are arranged in a plurality of different planes perpendicular to the conveying direction of the object under inspection.

Abstract: A method includes: obtaining a push content request from an object; determining a push content set according to the push content request; detecting historical behavior feature data of the object for a push content in response to a behavior feature of the object for the push content satisfying a preset negative behavior condition; performing content-based matching for the push content set based on the historical behavior feature data to obtain a target push content set of the object; performing content sorting of the push content set and performing content-based matching of the push content of the object to obtain a target push content set of the object; and determining a target push content of the object from the target push content set, and transmitting the target push content to the object.

Abstract: A neodymium-iron-boron magnet prepared by using waste sintered magnet and method for preparing neodymium-iron-boron magnet by using waste materials are provided. A blended alloy having a specific composition is used in the process of preparing a neodymium-iron-boron magnet from a waste sintered magnet.

Abstract: A methylation detection method and kit for genomic DNA or cell-free DNA molecules in a biological sample are provided. The method includes: obtaining a converted DNA molecule through a chemical and/or enzymatic reaction; performing a methylation-specific multiplex PCR, through multiple pairs of methylation-specific primers, on one or more methylated areas of one or more genes in the converted DNA molecule serving as a substrate, in order to obtain a PCR amplification product; and detecting the methylation levels of different fragments of the amplification product. The detection method can detect DNA methylation in multiple genes in multiple samples at the same time, requires only a small initial amount of DNA, is suitable for detecting methylated fragments having a small copy number, and has such advantages as high sensitivity, high specificity, high accuracy, a low detection limit, and low detection cost.

Abstract: Techniques related to viewport selection in immersive video contexts are discussed. Such techniques include generating multiple viewport predictions each for a future time interval and based on different prediction models, ranking the viewport predictions using error descriptors of the prediction models, selecting a viewport prediction for the future time intervals using the ranking, and correcting the selected viewport predictions using the error descriptors.

Abstract: The present invention provides a medium-carbon boron-containing steel. The chemical components of the medium-carbon boron-containing steel are as follows in mass percentage: 0.37-0.45% of C; 0.17-0.37% of Si; 0.60-0.90% of Mn; 0.020-0.060% of Al; 0.0008-0.0035% of B; 0.030-0.060% of Ti; P?0.025%; S?0.025%; Cr?0.25%; Ni?0.20%; Mo?0.10%; Cu?0.20%; and the remainder is Fe and inevitable impurities. The controlled rolling and controlled cooling method suitable for the on-line normalizing treatment of medium-carbon boron-containing steel sequentially comprises the following steps: heating, rough rolling, finishing rolling, cooling by passing through water, and cold bed slow cooling. The medium-carbon boron-containing steel can meet the requirements of having a hardness of 190-220 HBW, an actual grain size that is ?7 grade, and a banded structure that is ?2 grade.

Abstract: The present disclosure provides a cervical traction pillow includes a cervical traction pillow main body and a massage device. The cervical traction pillow main body is a flexible cervical traction pillow main body with a narrow upper part and a wide lower part, so as to form a neck brace traction portion at an upper end and a base at a lower end, a first back portion connected between the neck brace traction portion and the base, and two first side portions opposite and connected to the neck brace traction portion, the base, and the back portion. The neck brace traction portion and a bottom surface of the base are connected in an acute angle. The massage device is arranged on the cervical traction pillow main body.

Abstract: The application relates to the field of man-machine interaction in artificial intelligence and provides a multi-task processing method. The method includes the following operations: determining a first task based on request information entered by a user; obtaining key information corresponding to the first task and executing the first task, where the key information includes one or more slots and values of the one or more slots; storing task status information of the first task, where the task status information includes the key information; and predicting and initiating a second task based on the task status information of the first task. A man-machine interaction system may predict a next task based on the stored task status information, and actively initiate the predicted task. This improves intelligence and efficiency of multi-task processing by the man-machine interaction system.

Abstract: An SNP marker significantly related with yardlong bean anthocyanin content is provided in the present disclosure. The SNP marker significantly related with yardlong bean anthocyanin content is located at the position of 2,361,292 bp on chromosome 5 of yardlong bean genome v1.2, with a base A to G substitution, and the nucleotide sequence thereof is shown in SEQ ID NO. 1. KASP marker based on the SNP marker significantly related with the yardlong bean anthocyanin content and application thereof are also provided in the present disclosure. The KASP marker and the SNP marker significantly related with yardlong bean anthocyanin content are applied for molecular marker-assisted selection breeding of yardlong bean anthocyanin traits.

Abstract: The application relates to an anti-back-transfer intake structure of a rotating detonation combustion chamber including a Tesla valve communicating with the rotating detonation combustion chamber and arranged at an inlet of the rotating detonation combustion chamber. The Tesla valve includes a casing and a flow passage, the casing is coaxially connected with an outer wall of the rotating detonation combustion chamber, the flow passage is arranged in the casing, and the flow passage has an inlet end for introducing air, and an outlet end connected with an annular passage of the rotating detonation combustion chamber.

Abstract: A method for driving a pixel array, a device, and a display panel are provided. The data lines electrically connected to the sub-pixels are electrically connected with data signal terminals through switch modules, respectively. The switch modules receive selection control signals to switch connection states of the data lines with the data signal terminals. The method includes: applying gate signals to a gate line corresponding to the first row of sub-pixels and a gate line corresponding to the second row of sub-pixels, respectively; and during a period of applying the gate signals to the second row of sub-pixels to control the second row of sub-pixels, after a first duration length of the gate signals applied to the first row of sub-pixels being switched from the on-state to the off-state, a selection control signal corresponding to the second row of sub-pixels controlling the switch modules to switch the connection states.

Abstract: Example neural architecture search methods and image processing methods and apparatuses in the field of computer vision in the field of artificial intelligence are provided. The example neural architecture search method includes determining search space and a plurality of construction units, superimposing the plurality of construction units to obtain a search network, adjusting, in the search space, network architectures of the construction units in the search network, to obtain optimized construction units, and establishing a target neural network based on the optimized construction units. In each construction unit, some channels of an output feature map of each node are processed by using a to-be-selected operation to obtain a processed feature map, and the processed feature map and a remaining feature map are stitched and then input to a next node.

Abstract: A cleaning roller device is provided. The cleaning roller device comprises a transversely-arranged cleaning roller, a roller bearing device, and a roller driving device capable of driving the cleaning roller to rotate around the central axis of the cleaning roller on the roller bearing device, wherein a front-end central pipe and a rear-end central pipe are respectively arranged along the front-end central axis and the rear-end central axis of the cleaning roller and are respectively connected to rotary joints. The rotary joints are used for respectively connecting external pipelines communicated with a water source and a steam source; the front end of the cleaning roller is provided with a solid barrel fragment outlet and a barrel fragment outlet sealing cover, and the rear end of the cleaning roller is provided with a liquid outlet; a feed port is formed in the wall of the cleaning roller.

Abstract: A five-axis linkage synchronous tool path interpolation method and system, which utilizes the strict proportional coefficient relationship between points, control points and parameters on the first-order derivative curve of the spline curve, more accurate tool axis path curve interpolation points from the parameters of the tool tip path curve are calculated. There is no need to calculate the tool axis path curve interpolation points according to interval synchronization. It is not affected by the shape consistency of the tool tip path curve and the tool axis path curve.

Abstract: A multiplexing channel switch selection circuit includes: plural channel switch circuits coupled to plural corresponding input ends and plural channel switch circuits are commonly coupled to an output end. Each channel switch circuit comprises: a switch unit and a control circuit. The control circuit includes: an analog bootstrap circuit coupled between the shared source end and the shared gate end, wherein in a situation when the channel selection signal selects the each channel switch circuit, the analog bootstrap circuit supplies an conductive bias voltage across between the shared source end and the shared gate end, to turn ON the first switch and the second switch; and a feedback regulation circuit coupled to the analog bootstrap circuit, wherein the feedback regulation circuit feedback-regulates the shared gate voltage at a constant voltage level.

Abstract: A dual-loop LDO includes: an output power switch, an outer and inner loop circuit. An output end has a first pole, a control end has a second pole, whereas, an outer loop capacitor of an outer feedback circuit has a third pole. During a case when a load current switches its level, the inner loop circuit adaptively executes swift response, thus shortening a transient response time prior to a time point where output voltage reaches target voltage level. A third pole frequency of the third pole is lower than a first pole frequency of the first pole and a second pole frequency of the second pole to an extent where the dual-loop low dropout regulator approximates a stable state during a normal operation mode and a phase margin of the dual-loop LDO is greater than a preset angle and a bandwidth of the LDO is greater than a preset frequency.

Abstract: Provided are antigen-binding fragments thereof that bind to human CD137, multispecific antibodies that recognize CD137 as one antigen and at least one other antigen, a pharmaceutical composition comprising CD137 antibodies, and use of the antibody, multispecific antibody or the composition for treating a disease, such as cancer.