Abstract: A catalyst composition for hydrogenating 4,4?-methylenedianiline derivatives is provided. The catalyst composition includes a carrier including aluminum oxide and magnesium oxide, a rhodium-ruthenium active layer loaded on the surface of the carrier, and a solvent including an organic amine. The weight percentage of magnesium oxide in the carrier is between 12% and 30%. A method for preparing 4,4?-methylene bis(cyclohexylamine) derivatives using the catalyst composition is also provided.

Abstract: A display substrate and a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate, including a pixel array region and a peripheral region; and a first scan driving circuit, a plurality of power lines, a first signal line group, and a second signal line group, which are in the peripheral region and located on a first side of the base substrate. The first scan driving circuit includes a plurality of cascaded first shift registers; the plurality of power lines are configured to provide a plurality of power voltages to the plurality of cascaded first shift registers in the first scan driving circuit; the first signal line group includes at least one timing signal line; and the second signal line group is on a side of the plurality of power lines and the first signal line group away from the pixel array region.

Abstract: A display panel includes an active area and a peripheral area surrounding the active area, and the display panel further includes: a substrate and a plurality of light emitting devices arranged on the substrate in array, wherein the plurality of light emitting devices are located at least in the active area; a conducting layer comprising a cathode ring and cathodes of the plurality of light emitting devices, wherein the cathode ring is located in the peripheral area, and the cathode ring surrounds the active area; and a lens layer located at a side of the light emitting devices away from the substrate, wherein the lens layer extends from the active area to the peripheral area; wherein an orthographic projection of the lens layer on the substrate is located within an area delineated by an outer contour of an orthographic projection of the cathode ring on the substrate.

Abstract: A display panel, a method for manufacturing the same and a display device are provided. In a second pixel region of the display panel, there is a first gap between first and second electrical connection elements in a first electrical connection layer, there is a second gap between third and fourth electrical connection elements in a second electrical connection layer, a third electrical connection layer is coupled to a fifth signal line pattern. The fifth signal line pattern is used to transmit a fifth signal with a fixed electrical potential, and an orthographic projection of the third electrical connection layer onto a substrate of the display panel covers at least part of an orthographic projection of the first gap onto the substrate and at least part of an orthographic projection of the second gap onto the substrate.

Abstract: A low-carbon and low alloy hot-work die steel with a high toughness at low temperatures and a high strength at high temperatures and a high hardenability, comprises the following components: C: 0.15-0.35%, Si: 0.40-0.90%, Mn: ?0.80%, Cr: 1.50-2.40%, Ni: 2.50-4.50%, Mo: 1.00-1.60%, V: 0.10-0.40%, W: 0.20-0.90%, P: ?0.02%, S?0.02%, and a balance of Fe matrix and other inevitable impurities. The above percentages are mass percentages. The material of the present invention can have a V notch impact energy of 30 J or more than 30 J at ?40° C., a high temperature strength of 380 MPa or more at 700° C., and a hardenability of 200 mm or more to ensure the consistency of internal and external microstructures. The materials of the present invention can be applied to hot-work molds used in special working conditions that require high toughness at low temperatures, high strength at high temperatures and high hardenability.

Abstract: The present disclosure provides an array substrate and a display device. The array substrate includes: a sub-pixel, in a display region and including a light-emitting element, the light-emitting element including a first electrode, a light-emitting layer and a second electrode; a positive power line, connected to the first electrode; a positive power bus, connected to the positive power line; three positive power access ends, at a side of the positive power bus away from a display region, and respectively connected to the positive power bus; a negative power line; an auxiliary electrode, respectively connected to the negative power line and the second electrode; three negative power access ends, at the side of the positive power bus away from the display region, and respectively connected to the negative power line; and a negative power auxiliary line, respectively connected to the negative power access end and the auxiliary electrode.

Abstract: A display substrate and a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate, a gate driving circuit, power lines, a first signal line group, and a second signal line group. The gate driving circuit includes cascaded shift register units; the power lines are configured to provide power signals to the shift register units; the first signal line group includes at least one clock signal line, and the clock signal line is configured to provide a clock signal to the shift register units; the second signal line group includes a trigger signal line, and the trigger signal line is configured to provide a trigger signal to a first-stage shift register unit; and the gate driving circuit includes at least one transistor, and an extending direction of a channel of the transistor is parallel to an extending direction of the clock signal line.

Abstract: Provided are a video preloading method and apparatus, a device, and a medium. The method includes: in response to determining that a length of a buffered video reaches a first numerical value, creating and executing a preloading task, where the buffered video is a current video that is buffered and is to be played, and the preloading task is used for preloading a subsequent video; and in an execution process of the preloading task, in response to determining that the length of the buffered video is less than or equal to a second numerical value, cancelling the preloading task, where the second numerical value is less than the first numerical value.

Abstract: Provided is a display substrate including a base substrate, a plurality of pixel units, at least one first power line, a barrier structure, an adapting structure, a cathode layer and a first organic pattern. By covering at least part of the second side face of the adapting structure with the first organic pattern, the risk of the second side face of the adapting structure being eroded by moisture or oxygen due to the etching defects can be reduced.

Abstract: A display device, an electronic apparatus and a method for manufacturing the display device are disclosed. The display device includes an array substrate and a first thin film encapsulation layer disposed on the array substrate. The array substrate is a silicon based organic light-emitting diode array substrate, and the array substrate includes a silicon substrate and a light-emitting device disposed on the silicon substrate; a second thin film encapsulation layer disposed between the light-emitting device and the first thin film encapsulation layer; and a color filter layer disposed between the first thin film encapsulation layer and the second thin film encapsulation layer, at each edge of the first thin film encapsulation layer, an orthographic projection of the array substrate on a plane parallel to the array substrate extends beyond an orthographic projection of the first thin film encapsulation layer on the plane.

Abstract: Block data load with transpose techniques are described. In one example, an input is received, at a control unit, specifying an instruction to load a block of data to at least one memory module using a transpose operation. Responsive to the receiving the input by the control unit, the block of data is caused to be loaded to the at least one memory module by transposing the block of data to form a transposed block of data and storing the transposed block of data in the at least one memory.

Abstract: A distributor includes: an outer housing; a direct current charging interface, an electronic control terminal interface, and a battery terminal interface disposed in the outer housing. A first contactor and a second contactor are connected between the electronic control terminal interface and the battery terminal interface. A third contactor and a pre-charge resistor form a pre-charge branch. A fourth contactor is connected between the direct current charging interface and the battery terminal interface; a fifth contactor is connected between a negative terminal of the direct current charging interface and a negative terminal of the battery terminal interface; and the five contactors and a pre-charge resistor are disposed in the outer housing.

Abstract: In some examples, a device can include an antenna to emit waves in a radiation pattern having a first beamwidth, a directional radiation control device located in a path of the waves, where the directional radiation control device is to receive the waves from the antenna and is shaped to cause the waves to be directed in a different radiation pattern having a second beamwidth that is larger than the first beamwidth.

Abstract: In a method, a base mesh is generated from a down-sampled input mesh in a current frame, where the base mesh includes a plurality of vertices. A prediction mode to be applied to the base mesh is determined. The prediction mode is an inter prediction mode or an intra prediction mode. Based on the prediction mode being determined as the intra prediction mode, duplicate vertices among the plurality of vertices in the base mesh are merged to generate a subset of the plurality of vertices. At least the subset of the plurality of vertices is encoded based on the determined intra prediction mode to generate prediction information of at least the subset of the plurality of vertices.

Abstract: The embodiments of the disclosure are applicable to the technical field of blockchain and provide a consensus trusted cluster changing method, a computer device and a computer-readable storage medium. The method is applicable to a blockchain and includes: determining a current epoch of a newly added validator node of the consensus trusted cluster in the blockchain and a target epoch of the consensus trusted cluster; requesting target status information and proof of target cluster change from a target validator node in the target epoch; verifying the target status information according to the proof of target cluster change; and updating, in case where the target status information has been verified, status information of the newly added validator node according to the target status information to complete change of the consensus trusted cluster. Through the above method, a trusted synchronization target status may be determined.

Abstract: This application relates to the artificial intelligence (AI) field, and specifically, to a voice quality enhancement method and a related device. The method includes: after a PNR mode is enabled, obtaining a noisy voice signal and target voice-related data, where the noisy-carrying voice signal includes a voice signal of a target user and an interfering noise signal, and the target voice-related data indicates a voice feature of the target user; and performing noise reduction on the noisy voice signal based on the target voice-related data by using a trained voice noise reduction model to obtain a noise-reduced voice signal of the target user, where the voice noise reduction model is implemented based on a neural network. In embodiments of this application, voice of a target person can be enhanced, and interference can be suppressed.

Abstract: A method for detecting abnormal direct current voltage measurement in a modular multilevel converter high voltage direct current transmission system is provided. In the method, a valve group voltage at a detection pole is obtained, voltages at voltage measurement points at the detection pole are collected, and comparison and determination are performed based on the actual arrangement of the voltage measurement points, and then whether an abnormal measurement occurs at each of the voltage measurement points is determined.

Abstract: The present invention relates to a method for removing protein corona on the surface of nanometer particle. Specifically, the invention provides a method for removing protein corona of protein corona modified nanometer particle, the method comprises the following steps: subjecting the protein corona modified nanometer particle to ultrasound stimulation to remove the protein corona of the protein corona modified nanometer particle; the nanometer particle comprises perfluoropentane. Ultrasound stimulation can remove protein corona on the surface of nanometer particle, overcome the masking effect of the protein corona on the ligand modified on the surface of nanometer particle, and prevent the protein corona from blocking the binding of the ligand modified on the surface of nanometer particle to cell receptor.

Abstract: A pixel circuit and a driving method thereof, and a display device are provided. The pixel circuit includes a driving sub-circuit, a data writing sub-circuit, a first light-emitting control sub-circuit, a second light-emitting control sub-circuit, a compensation sub-circuit, and a first reset sub-circuit, and is configured to generate a driving current to control a light-emitting element to emit light, the first reset sub-circuit comprises a first transistor, the compensation sub-circuit comprises a second transistor, the first transistor and the second transistor are both polysilicon oxide thin film transistors, and an active layer type of the first transistor and an active layer type of the second transistor are different from an active layer type of a transistor comprised in at least one selected from a group consisting of the driving sub-circuit, the data writing sub-circuit, the first light-emitting control sub-circuit, and the second light-emitting control sub-circuit.

Abstract: A data processing method includes: generating a service serial number for a target service according to a preset naming rule; obtaining service data of the target service; obtaining a target data table from a plurality of pre-configured data tables, according to the service serial number; and storing the service data to the target data table.