Abstract: A chassis device, a movable platform, a shock absorber, and a material storage and retrieval device are provided. The chassis device includes a frame, a link mechanism, and a first auxiliary wheel assembly. The link mechanism includes a first link and a second link. The first link is hinged to the frame and hinged to the first auxiliary wheel assembly. The second link is hinged to the frame and hinged to the first auxiliary wheel assembly. A connecting line between the first hinge point and the second hinge point is parallel to a connecting line between the third hinge point and the fourth hinge point, and a connecting line between the first hinge point and the third hinge point is parallel to a connecting line between the second hinge point and the fourth hinge point.

Abstract: The present invention provides a PIKfyve protein degradation agent and use thereof. Specifically, the present invention provides a compound having a structure represented by formula (I), or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof, or a prodrug molecule thereof. The compound can target and degrade PIKfyve proteins through a ubiquitin-proteasome pathway, and therefore can be used for treating indications mediated by aberrant expression of the PIKfyve proteins.

Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a compound having a structure of Formula 1. In particular, Formula 1 comprises a particular substituent. These new compounds can be used as light-emitting materials in organic electroluminescent devices, achieve the desired green or yellow light emission and have excellent performance, thus possessing potential application prospects to become excellent light-emitting materials. Further provided are an organic electroluminescent device comprising the compound and a composition comprising the compound.

Abstract: A multicolor electrochromic structure comprises a working electrode, an electrolyte and an auxiliary electrode. The electrolyte is distributed between the working electrode and the auxiliary electrode. The working electrode comprises an electrochromic layer which comprises a first reflective surface and a second reflective surface arranged face to face in parallel. A dielectric layer is arranged between the first and the second reflective surface. The first and the second reflective surfaces and the dielectric layer form an optical cavity. The dielectric layer is fabricated by an electrochromic material. The multicolor electrochromic structure can combine a structural color with electrochromism to display various color changes; it features a simple structure, low costs and a wide application prospect, and it is easy to be fabricated.

Abstract: Provided are an organic electroluminescent material, a device thereof, and a display device. The organic electroluminescent material is a compound having a structure represented by Formula 1. An organic electroluminescent device using the compound as a fluorescent material can achieve particular green light emission and has a relatively narrow full width at half maximum (FWHM), a relatively low driving voltage, and relatively high device efficiency (CE, PE, and EQE), thus exhibiting excellent overall performance. Further provided are an organic electroluminescent device comprising the organic electroluminescent material, a display device thereof, and a compound composition comprising the organic electroluminescent material.

Abstract: The present disclosure relates to an organic electronic device, for example, an organic light-emitting device. More particularly, the present disclosure relates to a light-emitting device comprising a phosphorescence sensitizer and a fluorescent material. The phosphorescence sensitizer is a metal complex, and the metal is Ir. The phosphorescence sensitizer comprises a structure represented by a fragment of Formula 1. The fluorescent material comprises at least one B atom. The organic electroluminescent device disclosed in the present disclosure has better device performance. In particular, the organic electroluminescent device has apparent effects and advantages in terms of CE and EQE and has a relatively low voltage, thereby better improving the overall performance of the electroluminescent device. Further provided are a material combination comprising the phosphorescence sensitizer and the fluorescent material and a display assembly.

Abstract: The present disclosure relates to an area adjustment method and apparatus, a camera and a storage medium. The method includes: in response to detecting that a camera rotates, obtaining a rotation angle variation of the camera; according to the rotation angle variation, obtaining a transformation relationship between a world coordinate system and a pixel coordinate system corresponding to the camera; according to world coordinate data of a preset area and the transformation relationship, determining pixel coordinate data of the preset area in a current image; where the preset area indicates an area preset in a preview image before the camera rotates. In the embodiment, the preset area in the preview image does not change along with the rotation of the camera. Thus, no false identifications and false alarms will be generated during a process of identifying an object in the preset area subsequently, helping improve the identification efficiency and the use experiences.

Abstract: Provided in the present disclosure are a diphenoxylate artificial hapten, a diphenoxylate artificial antigen, preparation methods therefor, and use thereof, relating to the technical field of immunological testing. The hapten has a structure represented by formula I. The present disclosure further provides the preparation method for the hapten, the artificial antigen formed by covalent conjugation of the artificial hapten with a carrier protein, and an antibody obtained by immunization with the artificial antigen; and develops a diphenoxylate detection device, such as a test strip and a test card.

Abstract: A terminal rotating device comprises a rotating disc and a driving shaft connected to the rotating disc for driving the rotating disc to rotate around its central axis. The rotating disc includes four evenly spaced engagement slots distributed in its circumferential direction. The engagement slots of the rotating disk are each adapted to engage with a carrier strip part on a terminal. The rotating disk is adapted to rotate the terminal engaged with it from a first posture to a second posture perpendicular to the first posture, so as to rotate a plug pin of the terminal from a horizontal orientation to a vertical orientation.

Abstract: The embodiments of the present disclosure provide an acoustic output device including a sound emitting part. The sound emitting part may include at least one acoustic driver, and a first chamber, and a second chamber acoustically coupled to the at least one acoustic driver. The first chamber may have at least one first sound outlet, and the second chamber has at least one second sound outlet. The at least one acoustic driver may radiate sounds to an external environment through the at least one first sound outlet and the at least one second sound outlet. In at least a portion of a low-frequency range, the sounds emitted by the sound emitting part towards a far field may exhibit directivity.

Abstract: The disclosure relates to the technical field of optical fibers, and particularly relates to an optical fiber detection method, a reconfigurable optical add-drop multiplexer (ROADM) system, a server, and a storage medium. The optical fiber detection method is applied to a network management server of the ROADM system.

Abstract: The present disclosure provides an acoustic output device including an acoustic driver, and a first cavity and a second cavity acoustically coupled to the acoustic driver. The first cavity and the second cavity are provided with a first acoustic hole and a second acoustic hole, respectively, from which the acoustic driver radiate sounds with a phase difference to an outside environment. Within a target frequency band, a near-field sound radiated from the first acoustic hole and a near-field sound radiated from the second acoustic hole may have a near-field sound pressure level difference of less than 6 dB, and the sound radiated by the acoustic output device to a far-field has directivity, which is manifested in that the sounds radiated from the two acoustic holes have a far-field sound pressure level difference of not less than 3 dB in at least one pair of opposite directions.

Abstract: An electric riding lawn mower includes a seat for a user to ride, a main frame to support the seat, a power output assembly including a mowing element to output power to realize mowing function and a first motor to drive the mowing element, a walking assembly to at least drive the electric riding lawn mower to travel in the direction of a first straight line on the ground and a second motor to drive the walking assembly, and a power supply device to power the electric riding lawn mower with a first battery pack, which includes a first battery pack housing and a plurality of battery cells disposed therein. The power supply device is mounted to the main frame. At least one of the first battery packs of the power supply device forms a pluggable connection with the main frame. The battery cells are lithium batteries.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a first organic layer, the first organic layer comprises a first compound and a second compound, the first compound has specific HOMO and/or LUMO energy levels and a structure represented by Formula 1-1, and the second compound has a specific LUMO energy level and a structure represented by Formula 2-1. Compared with the related art, the combination of the first compound and the second compound can significantly improve the performance of the organic electroluminescent device, such as the efficiency of the device. Further provided is an electronic device comprising the organic electroluminescent device.

Abstract: One or more embodiments of the present disclosure provide an acoustic output device, comprising a housing; a first loudspeaker disposed in the housing, the first loudspeaker being acoustically coupled with a first hole portion and a second hole portion disposed on the housing, respectively, and the first loudspeaker being driven by a first electrical signal to output a first sound wave and a second sound wave having a phase difference through the first hole portion and the second hole portion, respectively; and a second loudspeaker disposed in the housing, the second loudspeaker being driven by a second electrical signal to output a third sound wave. In a target frequency range, the superposition of the first sound wave, the second sound wave, and the third sound wave generates a directional far-field radiation from the acoustic output device.

Abstract: A display substrate and a display apparatus are provided. The display substrate includes a base substrate; sub-pixels arranged in an array and on the base substrate; data line groups on the base substrate; each data line group includes data lines, each of which is connected to one column of sub-pixels; data selectors on the base substrate and connected to the data line groups in a one-to-one correspondence; data lines in a same data line group are connected to a same data selector; and data selection signal lines, wherein different data selection signal lines output different data selection signals; and different data lines connected to a same data selector correspond to different data selection signal lines, respectively. The display panel provided may effectively reduce the resistance on the data selection signal lines, thereby reducing the delay of the data selection signals and further improving the charging uniformity of sub-pixels.

Abstract: The present disclosure provides an acoustic output device comprising a bone conduction acoustic assembly used to generate a bone conduction acoustic wave; an air conduction acoustic assembly used to generate an air conduction acoustic wave; and a housing used to accommodate at least a portion of elements of the bone conduction acoustic assembly and the air conduction acoustic assembly. The housing includes a first chamber used to accommodate at least a portion of the bone conduction acoustic assembly; and a second chamber. The housing is provided with a sound outlet communicated with the second chamber. The air conduction acoustic wave is transmitted to an outside of the acoustic output device via the sound outlet. A frequency response curve of the air conduction acoustic wave has at least one resonance peak. A peak resonance frequency of the at least one resonance peak is greater than or equal to 1 kHz.

Abstract: The present disclosure provides an acoustic output device comprising a bone conduction acoustic assembly used to generate a bone conduction acoustic wave; an air conduction acoustic assembly used to generate an air conduction acoustic wave; and a housing used to accommodate at least a portion of elements of the bone conduction acoustic assembly and the air conduction acoustic assembly. The housing includes a first chamber used to accommodate at least a portion of the bone conduction acoustic assembly; and a second chamber. The housing is provided with a sound outlet communicated with the second chamber. The air conduction acoustic wave is transmitted to an outside of the acoustic output device via the sound outlet. A frequency response curve of the air conduction acoustic wave has at least one resonance peak. A peak resonance frequency of the at least one resonance peak is greater than or equal to 1 kHz.

Abstract: Disclosed herein is a process for making a compound of formula (2) by (hetero)aromatic C—H hydroxylation of a compound of formula (1): catalyzed by palladium(II) and a bidentate ligand in the presence of O2. The process is useful for instance, in the late-stage modification of medicinally important heterocycles.

Abstract: The present disclosure discloses a robot system and method for monitoring farmland nitrogen leaching. The robot system includes a cloud platform, a monitoring robot, and a leachate collection module. The cloud platform is configured to send information about a to-be-measured site and a to-be-measured depth to the monitoring robot and receive measurement information of the monitoring robot; and the monitoring robot is configured to move to the to-be-measured site to be connected to the leachate collection module at the to-be-measured depth of the to-be-measured site, extract a leachate of the leachate collection module, perform leachate nitrogen detection on the leachate, and send a leachate nitrogen detection result to the cloud platform.