Abstract: A liquid crystal composition containing a benzochromene compound and the use thereof in a liquid crystal display element or liquid crystal display. The liquid crystal composition comprises one or more compounds represented by Formula I and one or more compounds represented by Formula II. The liquid crystal composition has the characteristics of a small rotational viscosity, a large elastic constant, a high transmittance, a fast response speed, a strong resistance to ultraviolet light irradiation, and a high long-time light stability, and is particularly suitable for the field of TV display.

Abstract: A thin film transistor; includes a substrate; and a semiconductor layer provided on the substrate. The semiconductor layer includes a first surface proximate to the substrate and a second surface away from the substrate, and the semiconductor layer is made of a metal oxide semiconductor material. The semiconductor layer has a channel region; and crystals of metal oxide semiconductor are formed at least in the channel region of the semiconductor layer and proximate to the first surface or the second surface.

Abstract: A radio frequency front-end module, a manufacturing method thereof and a communication device are provided. The radio frequency front-end module includes a first base substrate and a metal bonding structure; a second functional substrate, including a second base substrate, a groove in the second base substrate, and a bonding metal layer; and a first radio frequency front-end component, at least partially located in the groove, the first base substrate and the second base substrate are oppositely arranged, and a surface of the second base substrate close to the first base substrate includes a groove surface inside the groove and a substrate surface outside the groove, and the bonding metal layer includes a first metal portion located on the groove surface and a second metal portion located on the substrate surface, the first radio frequency front-end component is at least partially surrounded by the first metal portion.

Abstract: The present disclosure discloses a PE-STOP gene editing system and gene knockout method and application. The gene editing system includes a prime editor protein, a pegRNA targeting a target site, and a matching nicking sgRNA for cleaving. The prime editor protein is selected from a PEmax protein, and an amino acid sequence of the PEmax is shown in SEQ ID NO. 1. The PE-STOP gene editing system can perform base replacement of a target gene sequence and introduce a termination codon in advance, thereby efficiently achieving the knockout of the target gene. The gene knockout method provided by the present disclosure has higher genotypic purity of the editing product and lower off-target activity, as well as higher genome coverage depth, therefore it has broad application prospects.

Abstract: The present invention relates to the technical field of automobile maintenance and device calibration, and discloses a device for calibrating a vehicle mounted night-vision video recording apparatus, the device for calibrating the vehicle-mounted night-vision video recording apparatus including a holder assembly and a calibration member. The calibration member is mounted on the holder assembly, the calibration member may move relative to the holder assembly to adjust a height of the calibration member, and the calibration member includes a calibration rod, the calibration rod being disposed horizontally for calibrating the vehicle-mounted night-vision video recording apparatus. In the device for calibrating the vehicle-mounted night-vision video recording apparatus of the present invention, the height of the calibration member is adjustable, and the calibration member includes the horizontally disposed calibration rod.

Abstract: The present disclosure discloses a data processing method, apparatus, device, and computer-readable storage medium, wherein the method is performed by a transmitting terminal, and the method includes: in response to a type of a data packet to enter a transmission queue of the transmitting terminal being a preset type, determining a timing when the data packet is expected to enter the transmission queue of the transmitting terminal as an expected transmitting timing; and in response to a duration from current timing to the expected transmitting timing being within a preset range, initiating a channel contention operation related to transmitting the data packet, wherein the channel contention operation related to transmitting the data packet includes carrier sensing, waiting for a distributed inter-frame spacing DIFS, and waiting for a back-off window.

Abstract: Provided herein is a potassium-binding polymer prepared by polymerization reaction of a monomer and a crosslinking agent, wherein the monomer is the compound of formula (V), the crosslinking agent is the compound of formula (VI), and/or the compound of formula (VII), wherein the variables are as defined in the specification; to the use thereof for treating or preventing hyperkalemia.

Abstract: A video playing method and apparatus are described that implement an adaptively varied playing speed, and meet a playing setting of a user, thereby improving viewing experience of the user in a video played at an adaptively varied speed. The method includes obtaining a first playing speed and obtaining first information. The first information includes image information of a video and/or voice information of the video. The method further includes playing the video at a second playing speed that is obtained based on the first playing speed and the first information.

Abstract: This application discloses an application switching method. In the method, an electronic device may separately display interfaces of corresponding applications by using a plurality of floating windows. When a quantity of floating windows is greater than a preset quantity, and the electronic device detects that a new floating window is opened, the electronic device may switch the first displayed floating window to a form of a floating ball, and add a new floating window. In addition, the electronic device may switch the one or more floating windows to one or more corresponding floating balls for display. When detecting a sliding operation input by the user, the electronic device may switch a current floating window to a corresponding floating window on which the minimization operation is first or last performed. In this way, the electronic device can simultaneously display a plurality of applications, and quickly switch any one of the applications.

Abstract: This application discloses a display adjustment method and apparatus. One example method includes: A display adjustment apparatus may obtain sensing information, where the sensing information is used to determine a facial area of a target user. The display adjustment apparatus may further adjust, based on a position of the facial area, a position of a display corresponding to the target user, so that an adjusted position of the display is suitable for the user to view.

Abstract: A scene reproduction test method, apparatus, device and program product of an autonomous driving system are provided by the present application. The method includes: obtaining problematic scene data generated during a test on an autonomous driving vehicle equipped with a first autonomous driving system, and determining key obstacle information and non-key obstacle information according to the problematic scene data; generating, according to the non-key obstacle information, a virtual obstacle model, and determining, according to the key obstacle information, a real device used to simulate a key obstacle; where the real device is a device that actually exists in a test environment; performing, by utilizing the virtual obstacle model and the real device, a reproduction test on an autonomous driving vehicle equipped with a second autonomous driving system. In the solution, the test object is a real autonomous driving vehicle, and the key obstacle is a real device.

Abstract: The present invention relates to the field of device calibration technologies and discloses a sliding apparatus and an automobile calibration device. The sliding apparatus includes: a guide rail, which includes a first surface and a second surface that are perpendicular to each other, where the first surface is provided with a first sliding groove and the second surface is provided with a second sliding groove, the first sliding groove and the second sliding groove being disposed in parallel; and a plate body, a first sliding member and a second sliding member, where the first sliding member and the second sliding member are installed on the plate body. The first sliding member is movably installed in the first sliding groove and the second sliding member is movably installed in the second sliding groove, so that the plate body is slidable along the guide rail.

Abstract: The present invention relates to the field of automobile maintenance and device calibration technologies, and discloses a clamping apparatus and an automobile calibration device. The clamping apparatus includes a fixing plate, a fixing block and a tension knob. The fixing block includes a fixing block body and a locking spring piece. The fixing block body is installed on the fixing plate. A receiving cavity is enclosed by the fixing block body and the fixing plate. The locking spring piece is located in the receiving cavity. The tension knob is installed on the fixing block body. The tension knob is capable of rotating relative to the fixing block body, to extend inside the receiving cavity and to abut against the locking spring piece. When a to-be clamped and calibrated apparatus is inserted in the receiving cavity, the tension knob may push the locking spring piece to abut against the to-be clamped and calibrated apparatus.

Abstract: The present invention relates to the field of vehicle correction, and provides a calibration system and a calibration bracket thereof. The calibration bracket includes: a base, a stand assembly and a beam assembly. The stand assembly is fixedly connected to the base. The beam assembly includes a first beam portion, a second beam portion and a connecting portion, the connecting portion being mounted to the stand assembly, one end of the connecting portion being hinged to the first beam portion, and the other end of the connecting portion being hinged to the second beam portion. The first beam portion and the second beam portion can respectively rotate toward each other relative to the connecting portion, so that the beam assembly can be folded. The first beam portion and the second beam portion can also respectively rotate away from each other relative to the connecting portion, so that the beam assembly can be unfolded.

Abstract: A radio frequency front-end module, a manufacturing method thereof and a communication device are provided. The radio frequency front-end module includes a first base substrate and a metal bonding structure; a second functional substrate, including a second base substrate, a groove in the second base substrate, and a bonding metal layer; and a first radio frequency front-end component, at least partially located in the groove, the first base substrate and the second base substrate are oppositely arranged, and a surface of the second base substrate close to the first base substrate includes a groove surface inside the groove and a substrate surface outside the groove, and the bonding metal layer includes a first metal portion located on the groove surface and a second metal portion located on the substrate surface, the first radio frequency front-end component is at least partially surrounded by the first metal portion.

Abstract: The present invention relates to the technical field of vehicle maintenance and device calibration, and discloses a vehicle-mounted radar calibration device and method. The vehicle-mounted radar calibration device includes a bracket apparatus and a radar calibration component. The radar calibration component is configured to be installed on the bracket apparatus and includes a base board. After calibration on the vertical plane of the base board is completed, the radar calibration component is configured to reflect a radar wave, emitted by a vehicle-mounted radar of a to-be-calibrated vehicle, to the vehicle-mounted radar, to calibrate the vehicle-mounted radar. In the present invention, after the vertical plane of the base board is calibrated, the radar calibration component is used to reflect the radar wave emitted by the vehicle-mounted radar to the vehicle-mounted radar.

Abstract: A detection system and method for rotor dynamic turn-to-turn short circuit fault of synchronous generator are disclosed. The system includes a motor, a synchronous generator, a current transformer, an acquisition card, an infrared temperature sensor, a temperature acquisition instrument and a control terminal. The rotor winding dynamic turn-to-turn short circuit fault of synchronous generator is detected and located by measuring the double judgment standards of the temperature signal of rotor winding and the three-phase current signal of stator winding. The method is easy to operate and has high sensitivity. The detection and location process of the fault is efficient and reliable. The dynamic turn-to-turn short circuit fault can be detected in the early stage of the formation of rotor static turn-to-turn short circuit, so as to reduce the loss of power plant fault shutdown and better meet the needs of practical application.

Abstract: The disclosure provides a method for preparing a structured hydrogel and a method for preparing a hydrogel heart valve. In the disclosure, the method includes: providing a photocurable hydrogel ink; establishing a three-dimensional digital model, and conducting photocuring 3D printing on the photocurable hydrogel ink to obtain a printed hydrogel; and immersing the printed hydrogel in water to obtain the structured functional hydrogel, wherein the photocurable hydrogel ink comprises: a high-density hydrogen-bonded unsaturated monomer, a photoinitiator, a dye, and a solvent; and the solvent comprises water and dimethyl sulfoxide.

Abstract: The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The liquid crystal composition of the present invention is characterized in that the liquid crystal composition comprises more than or equal to 30% of a compound represented by Formula I, and also comprises one or more compounds represented by Formula II and one or more compounds represented by Formula III. The liquid crystal composition of the present invention has a high refractive index, a high clearing point and also a low rotational viscosity, and is mainly used for the display of a projector with a relatively high working temperature and a low cell thickness.

Abstract: This specification relates to the fields of automobile maintenance and device calibration technologies and discloses a position adjustment apparatus and an automobile calibration device. The position adjustment apparatus includes a slide member, a supporting member and an adjustment member. The supporting member is movably mounted at the slide member. One of the slide member and the supporting member includes a rack. The adjustment member includes a gear. The gear is meshed with the rack. When rotating, the gear can drive the rack to move in a preset direction, to enable the supporting member to move in the preset direction with respect to the slide member. By means of the gear engagement between the gear and the rack, the supporting member can move stably and precisely in the preset direction with respect to the slide member, so that the automobile calibration device and an automobile to be calibrated can be aligned conveniently and precisely.