Abstract: Provided are a material presentation method an electronic device and a storage medium. The material presentation method includes steps described below. A data update request is received from a client. In response to the data update request carrying a splash presentation identifier of a splash presentation material, a news feed presentation material corresponding to the splash presentation identifier is acquired. The news feed presentation material is inserted into a preset presentation position of a news feed list page.

Abstract: A method of forming an array substrate, the array substrate and a display device are provided. The method of forming the array substrate includes: in a case that a display unit is formed on one of two opposite surfaces of a base substrate and a driving circuit is formed on the other of the two opposite surfaces of the base substrate, performing a roughening treatment on edge regions of the two opposite surfaces of the base substrate and a side surface of the base substrate connecting the edge regions of the two opposite surfaces, to form a roughened region; and forming, at the roughened region, a metal wiring connecting a signal input terminal of the display unit and a signal output terminal of the driving circuit.

Abstract: Provided are a material presentation method and apparatus, a terminal and a storage medium. The material presentation method includes steps described below. A to-be-presented splash presentation material is received. A splash presentation image of the to-be-presented splash presentation material is magnified, and the magnified splash presentation image is presented. In response to the presented magnified splash presentation image satisfying a minifying condition, the presented magnified splash presentation image is minified.

Abstract: The present disclosure provides a data processing method. The method includes the steps of constructing a keyword library of an obtained comment corpus associated with a target object, the keyword library comprising a plurality of keywords; extracting a plurality of partial comment corpora from the comment corpus, each partial comment corpus of the plurality of partial comment corpora comprising a plurality of comment words including at least one of the plurality of keywords in the keyword library; combining the plurality of partial comment corpora to produce a candidate corpus; and performing a topic clustering process on the candidate corpus of each keyword to obtain a subject term for the target object.

Abstract: The present invention belongs to the bioengineering field, and relates to a method for fermentation production of L-theanine by using an Escherichia coli genetically engineered bacterium. The engineered bacterium is obtained by serving a strain as an original strain, wherein the strain is obtained after performing a single copy of T7RNAP, a dual copy of gmas, xylR knockout, and sucCD knockout on an Escherichia coli W3110 genome, and by integrating genes xfp, pta, acs, gltA, and ppc, and knocking out ackA on the genome. The present invention has a high yield, and stable production performance; after 20-25 h, L-theanine has a titer of 75-80 g/L, and the yield is up to 52-55%. The fermentation broth is purified by membrane separation in combination with a cation-anion resin series technique. Moreover, the one-step crystallization yield is 72.3% and the L-theanine final product has a purity of 99%.

Abstract: A method for cryopreserving cells, a cell cryopreservation solution and a composition are provided. The method includes: providing a suspension for the cells to be cryopreserved in a cell cryopreservation solution; and cryopreserving the suspension. The cell cryopreservation solution includes dimethyl sulfoxide, plasma, citric acid, sodium citrate, potassium dihydrogen phosphate or sodium dihydrogen phosphate, glucose and adenine.

Abstract: Provided are an electronic device for a network control terminal and a network node, and a method for the electronic device. The electronic device for a network control terminal comprises processing circuitry configured to set a first condition concerning a beam-forming capacity of a network node for determining the network node capable of serving as a relay node, and to generate control signaling of indication information comprising the first condition for indicating the network node served by the network control terminal.

Abstract: A robot (100) working area map construction method and apparatus, a robot (100), and a medium, wherein the robot (100) working area map construction method comprises scanning in real time an obstacle in a driving path and recording position parameters of the obstacle (S102); obtaining in real time image information of the obstacle in the driving path (S104); according to the position parameters and the image information, determining working area—based reference information of the obstacle (S106); and dividing the working area into a plurality of sub-areas on the basis of the reference information (S108). By means of radar scanning and image capture by a camera for double insurance, the robot (100) working area map construction method significantly improves recognition accuracy for room doors and avoids room division confusion caused by the incorrect recognition of doors.

Abstract: A gimbal control method, a gimbal and a computer-readable storage medium including the gimbal control method are provided. The gimbal control method may include determining a target attitude angle of a gimbal, determining an attitude deviation value of the gimbal based on the target attitude angle and a current attitude angle of a clamping portion of the gimbal, generating a corresponding centering control instruction based upon the attitude deviation value, and executing the centering control instruction to control the gimbal to return to a center position.

Abstract: A gimbal control method, a gimbal, and a computer-readable storage medium are provided. The method includes: determining a target motor to be rotated and a target joint angle; generating a corresponding rotation control instruction based on a deviation between a current joint angle of the target motor and the target joint angle; and controlling the target motor to rotate based on the rotation control instruction. This disclosure improves convenience of switching between a horizontal shooting mode and a vertical shooting mode.

Abstract: The present disclosure provides a handheld gimbal that includes a handle part, a first bracket, a second bracket, a third bracket, a first motor, a second motor, and a third motor. The handheld gimbal includes a plurality of use modes corresponding to a plurality of attitudes of the first bracket. When the handle part is substantially in a vertical state, the handle part is tilted counterclockwise or clockwise to rotate the handle part around a roll axis, and the first motor follows the handle part to rotate to drive the first bracket to rotate around the roll axis. When the handle part is substantially in a horizontal state, the handle part is tilted counterclockwise or clockwise to rotate the handle part around a yaw axis, and the first motor follows the handle part to rotate to drive the first bracket to rotate around the yaw axis.

Abstract: A light guide plate, a backlight module and a display device are provided. A plurality of blind holes is arranged at a surface of the light guide plate; the blind hole is filled with a light-converting unit; the light-converting unit includes an accommodating cavity made of a light-transmitting material, and a light-converting material located in the accommodating cavity; and a gap is between an outer wall of the accommodating cavity and an inner wall of the blind hole.

Abstract: The present disclosure discloses a method for synthesizing a diaza-bridged compound and a diaza-bridged compound, belonging to the field of organic synthesis. The present disclosure includes the following reaction: in the formula, R is aryl, substituted aryl, alkyl or haloalkyl, Ra is any one of H, 2-nitrobenzenesulfonyl, 4-nitrobenzenesulfonyl or 2,4-dinitrobenzenesulfonyl, n=1 or 2. Since compound 2 and NH3 are used as raw materials, the present disclosure can not only effectively shorten the process flow and save process costs, but also improve the reaction yield to a certain extent. The present disclosure also provides a diaza-bridged compound, where the structural formula thereof is in the formula, Ra is any one of 2-nitrobenzenesulfonyl, 4-nitrobenzenesulfonyl or 2,4-dinitrobenzenesulfonyl.

Abstract: A voltage regulation system, a driving circuit, a display device and a voltage regulation method are disclosed. The voltage regulation system, applicable to an electronic device, including a power supply circuit, a determination circuit and a regulation circuit. The power supply circuit is connected with the regulation circuit, and the power supply circuit is configured to provide a reference voltage and provide a first voltage inputted into the electronic device; the determination circuit is connected with the power supply circuit, and the determination circuit is configured to, according to the reference voltage and the first voltage, output a compensation voltage; and the regulation circuit is connected with the determination circuit so as to receive the compensation voltage, and the regulation circuit is configured to output a third voltage, according to the compensation voltage and a second voltage, in a case where the compensation voltage is not within a preset range.

Abstract: A transfer device includes a transfer device body, the transfer device body includes a carrying plate and a picking-up plate. The picking-up plate is configured to drive the carrying plate to move, and a first end of the picking-up plate is fixedly connected to a first edge portion of the carrying plate. The carrying plate is configured to pick up and carry an object to be transplanted.

Abstract: The present disclosure provides a gimbal control method, a device, a gimbal, a system, and a storage medium. The gimbal includes at least one axis of rotation. The method includes: determining a current first working mode of the gimbal; and if the gimbal satisfies a preset mode switching condition, controlling the gimbal to switch from the first working mode to a second working mode, and enabling the gimbal to maintain smooth and stable operation during the switching process, where in the first working mode, the axis of rotation is configured to enable the gimbal to face a first direction, and in the second working mode, the axis of rotation is configured to enable the gimbal to face a second direction. In this way, smooth transition of the gimbal can be maintained during mode switching, so that stability of image shooting during mode switching of the gimbal is improved.

Abstract: The present application provides an optical modulating device having a light transmissive region and a light blocking region. The optical modulating device includes a base substrate; a plurality of protrusions on the base substrate in the light transmissive region and configured to allow light emitting out of a side of the optical modulating device; and a reflective layer on the base substrate in the light blocking region and configured to block light from emitting out of the side of the optical modulating device.

Abstract: A method of controlling a gimbal mounted at an unmanned aerial vehicle (UAV) includes: obtaining a current attitude of the UAV and a current attitude of the gimbal at a current moment; predicting a flight speed of the UAV; and controlling the gimbal to rotate to maintain an angle of the gimbal relative to the UAV within a particular angle range according to the current attitude of the UAV, the current attitude of the gimbal, and the predicted flight speed of the UAV, such that a ratio of a propeller assembly of the UAV appearing in an image photographed by a capturing device mounted at the gimbal is lower than a pre-configured ratio threshold.

Abstract: The present application discloses an array substrate, a display apparatus and a method of fabricating an array substrate. The array substrate has a plurality of first bottom-gate type thin film transistors each of which including a metal oxide active layer and a plurality of second bottom-gate type thin film transistors each of which including a silicon active layer.