Abstract: Provided are a crystal form and salt of a phenothiazine compound, a preparation method therefor and a use thereof. A hydrochloride of the phenothiazine compound and a crystal thereof can be used as ferroptosis inhibitors, and the hydrochloride and the crystal thereof have relatively good solubility, stability, oral absorption bioavailability, and druggability.

Abstract: The embodiments of the disclosure provide a thin film transistor device and a manufacturing method thereof, a composite etching solution, and an array substrate, the method includes: forming an active structure material layer including an active material layer and an ohmic contact material layer, and a source/drain material layer on a base substrate; performing a wet etching process on the source/drain material layer and the active structure material layer using a composite etching solution including a first etching solution and a second etching solution, so as to form a source/drain electrode layer and an active structure including an active layer and an ohmic contact layer, wherein the wet etching process includes: etching the source/drain material layer and oxidizing a portion of the active structure material layer, and etching an oxidized portion of the active structure material layer.

Abstract: An airflow device includes a grip for a user to hold; a pipe assembly for the air to pass through; fan blades rotatable about a fan axis; a motor for driving the fan assembly to rotate; and guide vanes for directing the airflow. The inner diameter of the pipe assembly is greater than or equal to 90 mm. The flow rate of the airflow device is greater than or equal to 1000 CFM. The maximum rotational speed of the motor is less than 35000 rpm.

Abstract: The invention discloses an AlCrVTiSiON nano-gradient coating with surface pre-oxidation and a preparation method thereof, belonging to the technical field of coatings. The AlCrVTiSiON nano gradient coating is prepared by arc ion plating technology, wherein the target materials are selected from metal Cr target, V target, AlCrSi target and AlTiSi target. In order to further improve the heat resistance of the coating and increase the cutting amount during service, the AlCrVTiSiON nano-gradient coating with O element content increasing from inside to outside was formed. The prepared coating has good heat resistance, which is suitable for high-speed cutting and improves processing efficiency.

Abstract: The invention discloses a benzimidazole or azabenzimidazole compound, a preparation method therefor and use thereof. The benzimidazole or azabenzimidazole compound has a structure shown in formula (I). Use of the compound and a pharmaceutically acceptable salt, a stereoisomer, a solvate or a hydrate thereof in preparing a GLP-1 receptor agonist and use thereof in preparation of a medicament for treating and/or preventing metabolic diseases.

Abstract: The present application provides a main catalyst for preparing poly(4-methyl-1-pentene) and a use of the main catalyst. The main catalyst for preparing poly(4-methyl-1-pentene) of the present application has a structure represented by Formula I, in which R1 is selected from hydrogen or phenyl, and when R1 is selected from phenyl, R1 is fused with a naphthalene ring in the Formula I to form an anthracene ring; and R2 is selected from methyl or isopropyl. When the main catalyst of the present application is used in a catalytic system to catalyze homopolymerization of 4-methyl-1-pentene, the catalyst exhibits high catalytic activity, and the prepared poly(4-methyl-1-pentene) has high molecular weight, narrow molecular weight distribution and high isotacticity, and thus has broad market application prospects.

Abstract: The present invention relates to a wound covering with prominent biocompatible and accelerated wound-healing and its preparation method thereof. The wound covering comprises a film prepared from collagen and Dopa-containing protein—mussel adhesive protein, which is immobilized on collagen by chemical cross-linking, thus enhances the stability of protein structure and maintains the activity of collagen and mussel adhesive protein. The wound covering has excellent mechanical strength and can be trimmed into any shape; it accelerates tissue epithelisation and promotes wound healing with good biocompatibility, non-adhesive to the wound and no further wound damages.

Abstract: A display substrate is provided, including: a base substrate; a plurality of sub-pixels arranged on the base substrate in an array in a row direction and a column direction; a plurality of post spacers arranged at intervals on the base substrate, wherein the plurality of post spacers include at least one main post spacer and a plurality of sub post spacers, and each main post spacer has a height greater than that of each sub post spacer. Each sub-pixel has at most one post spacer provided therein, the plurality of sub-pixels include a main sub-pixel provided with the main post spacer and a sub sub-pixel provided with the sub post spacer, and the plurality of sub-pixels further include at least one mark sub-pixel adjacent to the main sub-pixel in the row direction or the column direction, the at least one mark sub-pixel is provided with no post spacer.

Abstract: Solder materials and microelectronic devices and systems deploying the solder materials are discussed. The solder material includes a bulk material of tin and bismuth and particles interspersed in the tin and bismuth bulk material. The particles are a metal other than tin and bismuth, and an intermetallic compound is formed around the particles. The intermetallic compound includes the metal of the particles and tin or bismuth. The solder materials are deployed as interconnect structures to interconnect components, such as electrically coupling an integrated circuit package to a motherboard.

Abstract: The present disclosure discloses a MEMS microphone, including: a substrate including a back cavity; a capacitive system arranged on the substrate, the capacitive system including a back plate and a diaphragm opposite to the back plate; wherein the diaphragm includes a vibration portion and a fixing portion surrounding the vibration portion and fixed to the substrate, the vibration portion and the fixing portion are spaced apart from each other by a slit, the fixing portion includes a plurality of releasing portions, and the releasing portions pass through the fixing portion. Compared with the related art, MEMS microphone disclosed by the present disclosure has a high reliability of the back plate.

Abstract: The present invention provides a MEMS microphone including a substrate with a back cavity and a capacitive system disposed on the substrate. The capacitive system includes a back plate and a vibration diaphragm arranged opposite to the back plate. The back plate includes a middle part and a fixed part surrounding the middle part and fixed to the substrate. The fixed part is arranged with a thickness greater than that of the middle part, and the fixed part includes a first surface away from the substrate and a second surface opposite to the first surface. The first surface includes a first arc connected to the middle part, and the first arc protrudes away from the substrate. Compared with related technologies, the MEMS microphone provided by the present invention can improve the reliability of the back plate.

Abstract: The present disclosure discloses a MEMS microphone, including: a substrate including a back cavity; a capacitive system arranged on the substrate, the capacitive system including a back plate and a diaphragm opposite to the back plate; wherein the diaphragm includes a vibration portion and a fixing portion surrounding the vibration portion and fixed to the substrate, the vibration portion and the fixing portion are spaced apart from each other by a slit, the fixing portion includes a plurality of releasing portions, and the releasing portions pass through the fixing portion. Compared with the related art, MEMS microphone disclosed by the present disclosure has a high reliability of the back plate.

Abstract: The disclosed technology involves autonomously identifying goals and sub-goals from a user utterance and generating responses to the user based on the goals and sub-goals.

Abstract: A reflection rate correction Time of Flight (ToF) ranging method including: obtaining statistical results of photon flight time of a light pulse reflected by a target object; where the statistical results include detection times of photons and photon quantities corresponding to the detection times; determining a start time of detecting the light pulse based on the statistical results; determining a distance to the target object based on the start time of detecting the light pulse and a start time of emitting the light pulse.

Abstract: A snow thrower includes: a snow collection device including a snow collection element for collecting snow and a first electric motor configured to drive the snow collection element to rotate; a snow throwing device including a snow throwing element for throwing out the snow collected by the snow collection device, a discharge chute guiding a snow throwing direction, and a second electric motor driving the snow throwing element to rotate; a main housing for supporting the snow collection device and the snow throwing device; a walking assembly including walking wheels driving the snow thrower to walk on the ground; and a power supply device configured to power the first electric motor and the second electric motor. A working current of the first electric motor is less than or equal to 40 A when the snow collection element works with no load. The snow thrower has relatively high work efficiency.

Abstract: Embodiments discussed herein refer to LiDAR systems to focus on one or more regions of interests within a field of view.

Abstract: The present disclosure describes a system and method for coaxial LiDAR scanning. The system includes a first light source configured to provide first light pulses. The system also includes one or more beam steering apparatuses optically coupled to the first light source. Each beam steering apparatus comprises a rotatable concave reflector and a light beam steering device disposed at least partially within the rotatable concave reflector. The combination of the light beam steering device and the rotatable concave reflector, when moving with respect to each other, steers the one or more first light pulses both vertically and horizontally to illuminate an object within a field-of-view; obtain one or more first returning light pulses, the one or more first returning light pulses being generated based on the steered first light pulses illuminating an object within the field-of-view, and redirects the one or more first returning light pulses.

Abstract: A device comprises a substrate comprising a plurality of build-up layers and a cavity. A bridge die is located within the cavity and a plurality of cavity side bumps are on one side of the bridge die. A plurality of interconnect pads with variable heights are on one of the build-up layers of the substrate coupled to the plurality of the cavity side bumps to bond the bridge die to the substrate.

Abstract: A system and method for offloading autonomous driving tasks is disclosed. The system includes a plurality of computing nodes comprising one or a plurality of computing nodes located on a vehicle, one or a plurality of computing nodes located on edge devices, and one or a plurality of computing nodes located on cloud devices. The system further includes a modeling module configured to create a system model that comprises a communication latency between each pair of computing nodes among the plurality of computing nodes. The system also includes an allocation module configured to allocate a plurality of autonomous driving tasks of an autonomous driving service based on the system model in order to offload each autonomous driving task to one of the plurality of computing nodes, wherein the allocation is performed such that the end-to-end latency of the autonomous driving service is minimized.

Abstract: The present invention provides a MEMS microphone, including a housing body with a containment space, a sound hole penetrating the housing body, a MEMS microphone chip, an ASIC chip and a subtractor accommodated in the containment space. The MEMS microphone chip includes at least a first MEMS microphone chip and a second MEMS microphone chip. the first MEMS microphone chip is different from the frequency response droop characteristic of the second MEMS microphone chip. the first MEMS microphone chip and the output signal of the second MEMS microphone chip are output to the subtractor, and are output to the ASIC chip after the subtractor performs subtraction processing. Compared with the related art, the MEMS microphone of the present invention has good anti-interference performance and good sensitivity.