Abstract: A long-span corridor comprising two sets of floor cantilevered inclined trusses combined with suspension cable bearing is provided, including floor cantilevered inclined trusses, floor double-arch trusses, radial circumferential connecting structures, V-shaped support structures, corridor truss structures and suspension cable bearing structures; two trapezoidal tapering planar inclined trusses of each set of floor cantilevered inclined trusses are connected to each other through a combination of the floor double-arch trusses and through the radial circumferential connecting structures to form a single-set system; and the corridor truss structures are arranged between the two single-set systems.

Abstract: The embodiments of the present disclosure provide a display apparatus and a signal transmission method for the display apparatus. The display apparatus can use a voice assistant application to send received user voice to a voice assistant server, so that the voice assistant server can parse the user voice to obtain a channel switch instruction. In response to the channel switch instruction sent from the voice assistant server, the display apparatus receives an audio and video signal transmitted by a channel corresponding to the channel switch instruction, and plays the audio and video signal.

Abstract: Provided is an organic electroluminescent device and use thereof. The organic electroluminescent device comprises a first emissive layer, the first emissive layer comprises a first compound and a first metal complex having a ligand L a having a specific structure. The maximum capacitance of the organic electroluminescent device is at least 0.35 nF lower than the maximum capacitance of an organic electroluminescent device whose first emissive layer comprises the first metal complex and GH0. The organic electroluminescent device has lower maximum capacitance, thereby improving the response time and the refresh frequency of an OLED display device at low grayscales. Further provided is a display assembly comprising the organic electroluminescent device.

Abstract: A camera decoration part, fabrication method, and electronic device. The camera decoration part includes a first plate and a second plate; a first surface of the first plate has a decoration rendering; a second through-hole corresponding to a first through-hole is disposed on the second plate; a first surface of the second plate includes a connection area and an avoidance area, where the avoidance area is formed by recessing the first surface of the second plate to a second surface of the second plate by a first depth, a thickness of the second plate is greater than or equal to a height of a protrusion on a housing of the electronic device, the first depth is greater than or equal to the height of the protrusion, and a projection of the protrusion is in a projection area of the avoidance area.

Abstract: An integrated optimal designing and manufacturing method involving structure layout, geometry and 3D printing is provided, the method includes: building a minimum connection base structure, establishing a layout optimization model after screening out components that violate an overhang angle constraint, adding all components to the layout optimization model in batches; considering a manufacturing constraint about an overhang angle of each component, merging the components and fusing nodes in a layout by iterative optimization, and processing crossed components; extracting structure information, building a 3D solid model, and then slicing the solid model and generating a printing path for 3D printing. Considering the overhang angle constraint of the components in the printing manufacturing, the self-supporting structure is generated optimally, and no additional support is needed in the printing process; the structure is normalized by multiple iterations of component fusion and node movement processing.

Abstract: A method for optimizing design and manufacture of a self-supporting structure based on multi-axis 3D printing are provided, which comprises the following steps: using a structural topology optimization method based on an SIMP model to achieve the optimal configuration design of a complex structure, converting an image into a binary image, and post-processing the result of topology optimization; determining an overhanging angle of a structure boundary, and determining the printing direction of different printing partitions according to the classification; performing integrated optimization of angle constraints; extracting structural information, establishing a 3D solid model, and then partitioning and slicing the model, and generating a printing path for self-supporting multi-axis 3D printing manufacturing. The present disclosure has the beneficial effects that the self-supporting structure is generated in the optimization process, no additional support is needed in the printing process.

Abstract: Disclosed are a pregabalin artificial hapten, artificial antigen and preparation method therefor and application thereof. The structure of the pregabalin artificial hapten is shown as formula (I) and structure of the pregabalin artificial antigen is shown as formula (II). The application is in the preparation for anti-pregabalin antibodies with the pregabalin artificial antigen. The pregabalin artificial hapten retains the characteristic structure of pregabalin to the greatest extent, and has an active group that can be coupled with a carrier protein, and can be used as an antigenic determinant; the pregabalin artificial antigen obtained by further preparation can immune to obtain anti-pregabalin antibodies with high affinity, high sensitivity and strong specificity. The titer of the immune serum obtained by immunizing New Zealand white rabbits is as high as 1:90000, which can be used for rapid and accurate immunoassay of pregabalin.

Abstract: A riding lawn mower includes: a seat; a frame; a mowing element; a deck surrounding and forming a mowing space for accommodating at least part of the mowing element; and a first motor for driving the mowing element to rotate. The first motor includes a rotor assembly including a rotor shaft enabled to rotate about a rotation axis and a stator assembly, a motor housing surrounding and forming an accommodation cavity for accommodating at least part of the stator assembly. The rotor shaft passes through the motor housing in a direction of the rotation axis and is at least partially located outside the motor housing; the deck is provided with a first through hole for the first motor to pass through so that the motor housing is at least partially located in the mowing space. The first motor of the riding lawn mower has a good cooling effect.

Abstract: A matching design method of static stiffness for a combined box body structure of a large reducer is provided, including the following steps, building a transmission system model and an initial structure model and obtaining load data; performing a statics analysis; obtaining primary design variables and design responses; constructing design variables; constructing a static stiffness matching target of a combined box body; constructing an objective function; setting constraint conditions; constructing a response surface proxy model; constructing a static stiffness matching optimization model of combined box body; obtaining optimal design variables and obtaining an optimal structure model of the box body; performing the statics analysis on the optimal structure model of the box body, and performing a contrastive analysis with statics analysis results of the corrected box body two-dimensional unit finite element model to confirm optimization effects.

Abstract: There is provided a moving robot including a first light source module and a second light source module respectively project a first light section and a second light section, which are vertical light sections, in front of a moving direction, wherein the first light section and the second light section cross with each other at a predetermined distance in front of the moving robot so as to eliminate a detection dead zone between the first light source module and the second light source module in front of the moving robot to avoid collision with an object during operation.

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: A vehicle control method and an apparatus using the vehicle control method are provided. The control method includes: obtaining sight information of a driver, where the sight information includes a focus sector of the driver, and the focus sector includes at least one of a plurality of field of view sectors of a vehicle; and obtaining a control policy of the vehicle based on at least the sight information. In this control method, the focus sector represents a field of view range of the driver, and stability of a detection result of the field of view range is improved, so that accuracy of vehicle control is improved.

Abstract: A package structure is disclosed. The package structure includes a first substrate, a second substrate, a gap, and a directing structure. The second substrate is disposed under the first substrate. The gap is between the first substrate and the second substrate. The gap includes a first region and a second region. The first region is configured to accommodate a filling material. The directing structure is disposed in a flow path of the filling material and configured to reduce a migration of the filling material from the first region to the second region.

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: A liquid providing system of detecting a target container includes a main body, a holder, an optical sensor and an operational processor. The main body has a supporting platform. The holder is disposed on the supporting platform, and the holder is made by low reflectivity material and adapted to hold the target container. The optical sensor is disposed above the supporting platform and adapted to output a detection image containing the target container and the holder. The operational processor is electrically connected to the optical sensor, and adapted to analyze the detection image and then acquire an effective feature inside the detection image for distinguishing the target container from the holder.

Abstract: There is provided an image processing device including a light sensor and a processor. The light sensor is used to detect light and output an image frame. The processor identifies intensity of ambient light according to an image parameter associated with the image frame. When the ambient light is identified to be strong enough, the processor performs an object identification directly using the image frame. When the ambient light is identified to be not enough, the processor firstly converts the image frame to a converted image using a machine learning model, and then performs the object identification using the converted image.

Abstract: There is provided a fire alarm device including multiple light sources, a light sensor, a first processor and a second processor. In a standby mode, the first processor identifies whether to wake up the second processor according to a detection result of the light sensor obtained by detecting emission light of one of the multiple light sources. The second processor identifies whether to generate an alarm according to a detection result of the light sensor obtained by detecting emission light of the multiple light sources. The fire alarm device further includes a thermal sensor for providing detected temperature values to the first processor and/or the second processor to perform the identifying procedure.

Abstract: A display substrate, a manufacturing method therefor, and a display device are provided. The display substrate includes a base substrate, sub-pixels and an isolation portion, and each sub-pixel includes a light-emitting function layer. The isolation portion includes a first sub-isolation portion and a second sub-isolation portion. The first sub-isolation portion is between the second sub-isolation portion and the base substrate. The second sub-isolation portion includes a protrusion protruding relative to an edge of the first sub-isolation portion, the second sub-isolation portion facing one of adjacent sub-pixels is different in shape from the second sub-isolation portion facing the other one; or, a slope angle between a side surface of the first sub-isolation portion or the second sub-isolation portion facing one sub-pixel and a plane parallel to the base substrate is 60° to 120°. At least one film of the light-emitting function layer is disconnected at the isolation portion.

Abstract: An application of insulin-like growth factor-binding protein 2 (IGFBP2) in the preparation of drugs for resisting mental disorders caused by early-life stress. IGFBP2 puberty intervention and adult intervention can significantly improve anxiety and depression behaviors caused by early life stress.