Abstract: An array substrate, a display panel, and a display device are provided. The array substrate includes a base; a buffer layer and a thin film transistor. The buffer layer is provided on the base and includes a first buffer layer and a second buffer layer. The first buffer layer is disposed between the second buffer layer and the base. A refractive index of the first buffer layer is greater than a refractive index of the base and a refractive index of the second buffer layer. A ratio of the refractive index of the first buffer layer to the refractive index of the base is less than or equal to 1.25. The thin film transistor is provided on a side of the buffer layer away from the base.

Abstract: An electric press with disc stacking, includes two sets of all-electric presses, a blank disc transporting and stacking all-in-one machine, and a control box. The blank disc transporting and stacking all-in-one machine includes a blank disc feeding mechanism, a cassette conveying mechanism, a product transporting and flipping mechanism, a product disc stacking mechanism, and a pallet feeding mechanism. During operation, the blank disc feeding mechanism feeds blank disc to a blank disc receiving station; the cassette conveying mechanism conveys the blank discs to a product loading station and install products in the blank discs; pallets are transported to the product disc stacking mechanism; the cassette conveying mechanism conveys the pallets with products loaded to a disc stacking station for a disc stacking operation, and after the disc stacking, conveys the products into the pallets for palletization.

Abstract: A stacking and palletizing device includes a cassette conveying mechanism, a product transporting and flipping mechanism, a product disc stacking mechanism, and a pallet feeding mechanism. The cassette conveying mechanism is provided thereon with an blank disc receiving station, a product loading station and a product disc stacking station; the product loading station is correspondingly provided with a cassette positioning mechanism; a cassette lifting and partitioning mechanism is disposed below the product disc stacking station; the product disc stacking mechanism includes a screw rod lifting mechanism, which is provided thereon with a palletizing and conveying mechanism; and a gantry truss transplanting mechanism is correspondingly disposed above the screw rod lifting mechanism.

Abstract: A semiconductor device, a display panel, and a chip are provided in embodiments of the present application. The semiconductor device of the embodiments of the present application stacks a first conductor portion, a channel portion, and a second conductor portion to form a vertical active structure layer to realize a narrow channel. A growth direction of crystal grains arranged in the channel potion is consistent with a moving direction of carriers to provide a single crystal-like channel.

Abstract: Provided is a three-phase system V2O3/VN/Mo2C nanoelectrode material, and a preparation method and application thereof. The nanoelectrode material comprises V2O3 particles, VN particles, and Mo2C particles. The V2O3 particles, VN particles, and Mo2C particles are interlaced in lattice stripes and are uniformly distributed. The mass ratio of the V2O3, VN and Mo2C is (1 to 4):(10 to 40):(4 to 16). The above-mentioned three kinds of nanoparticles are intertwined to form more incoherent interface area. The increase in the area of the incoherent interface area will cause more defects, so that more active sites are provided, and the hydrogen production performance is improved.

Abstract: A method for controlling carbide network in a bearing steel wire rod by controlling cooling and rolling, comprises the following steps: rapidly rolling a bar to a wire rod and spinning it into a loose coil, controlling the rolling temperature at 780° C.-880° C.; and the spinning temperature at 750° C.-850° C.; carrying out on-line controlling cooling of continuous loose coils using EDC water bath austempering cooling process, controlling the cooling rate at 2.0° C./s-10° C./s, and controlling the final cooling temperature within 620-630° C.; after EDC water bath austempering cooling, using slow cooling under a cover, and the temperature is controlled to be 400° C.-500° C. when being removed out of the cover; after slow cooling, collecting coils, and cooling in air to the room temperature.

Abstract: The present invention provides a radar target detection method based on estimation before detection (EBD), which comprises: obtaining pre-detect targets (PDTs) based on conventional pulse-Doppler processing and pre-detection; estimating ranges and speeds of PDTs, i.e., performing parameter EBD; establishing a dimension-reduction observation model of a received signal based on PDTs and parameter thereof; reconstructing a target vector in the dimension-reduction observation model based on a sparse recovery algorithm; and designing a generalized likelihood ratio detector based on the reconstruction result for target detection. The method of the present invention can significantly reduce the radar signal processing loss, and the target detector used in the method has the constant false alarm rate (CFAR) property, so that the weak target detection performance can be greatly improved.

Abstract: Systems and methods are disclosed that include an operation chamber, a plasma generator having at least one plasma head disposed within the operation chamber and in proximity to a profile formed by cutting a piece of tubing, and a mechanical motion module. The plasma generator generates a plasma treatment and applies the plasma treatment via the at least one plasma head to the profile to activate material on an end surface of the profile, within a lumen of the profile, or a combination thereof. Once the material of the profile is activated by the plasma treatment, the mechanical motion module manipulates the profile to close the lumen of the profile to aseptically seal the profile.

Abstract: An integrated plugging and perforating operation system is provided, including an operation truck, a wellhead equipment pry, and a centralized control room. A mechanical mechanism and a power mechanism are arranged on a chassis of the operation truck. The mechanical mechanism includes a turntable assembly, where a telescopic arm assembly is installed on the turntable assembly, a mechanical arm assembly for logging operation is installed at an operating end of the telescopic arm assembly, and a logging winch assembly and a follow-up winch assembly are arranged at a counterweight end of the telescopic arm assembly to form a counter weight of the telescopic arm assembly. The power mechanism is configured for providing power output to the mechanical mechanism.

Abstract: A wellhead automatic positioning method and a system of a plugging and perforating operation machine are provided. The method includes: determining a wellhead position, and acquiring standard positioning parameters of a boom according to the wellhead position and a tool string length, where the positioning parameters include a standard extension length L of the boom, a standard lifting length J, and an included angle ? between a projection of the boom and a wellhead; acquiring actual positioning parameters of the boom, where the actual positioning parameters include an actual length L? of the boom, an actual lifting length J?, and an initial angle ?? between the projection of the boom and the wellhead; and according to the standard positioning parameters and the actual positioning parameters of the boom, making the boom to extend and retract, lift and lower, and rotate to complete automatic positioning of the wellhead.

Abstract: The present disclosure provides a display panel. The display panel comprises a base and a pixel driving circuit layer. The pixel driving circuit layer comprises a plurality of pixel driving circuits; the pixel driving circuit layer comprises a first semiconductor layer, a first insulating layer, and a second semiconductor layer stacked on the base. Wherein, the pixel driving circuit layer comprises first grooves located between the pixel driving circuits and opened in the first insulating layer, and a first organic spacer layer disposed in the first grooves.

Abstract: The present disclosure provides a semiconductor device and a method of manufacturing a semiconductor device. The semiconductor device includes: a substrate; an insulating layer provided with a plurality of trenches extending in a first direction; a first electrode layer and a second electrode layer, where a spacing region is provided between the first electrode layer and the second electrode layer; a semiconductor layer covering bottom portions and sidewalls of all channel trenches, where the channel trenches are at least a part of trench bodies of the trenches located in the spacing region; a gate dielectric layer covering a surface of the semiconductor layer in the channel trenches on a side away from the bottom portions and the sidewalls of the channel trenches; a gate layer, where at least a part of the channel trenches are fully filled with the gate layer.

Abstract: The present disclosure relates to a powered screwdriver. The powered screwdriver includes a housing, a motor housed in the housing and a tool holder driven by the motor. The tool holder selectively holds both a screwdriver bit and a hex key. The hex key includes a bend such that legs of the hex key are transverse to one another.

Abstract: The present disclosure relates to a desalination system of photovoltaic direct-driven membrane capacitive deionization. The system includes a photovoltaic direct-driven group and a municipal power grid-connected group. The photovoltaic direct-driven group includes a photovoltaic power collection unit, a power storage unit, a direct-driven power monitoring unit, a voltage adjustment unit, and a membrane capacitive deionization water purification unit. The municipal power grid-connected group includes a grid-connected control unit, a grid busbar unit, and an intelligent detection unit.

Abstract: This disclosure provides a query task execution method, apparatus, computer device, storage medium. The method includes: receiving a query task for a target data table; determining at least one candidate degree of parallelism for executing the query task based on a first number of child tables obtained by pre-partitioning the target data table; selecting a target degree of parallelism within a preset range of degrees of parallelism from the at least one candidate degree of parallelism; and determining required computing units according to the target degree of parallelism, and evenly allocating the child tables to the computing units which concurrently execute the query task based on the allocated child tables.

Abstract: A hydraulic engineered cementitious composite (ECC) material and an application thereof are provided. The ECC material includes 25-34 wt % of cement, 23-30 wt % of fly ash, 15-20 wt % of silica fume, 26-32 wt % a fine aggregate, 1.25-1.7% of a composite fiber mesh, 0.1-0.24 wt % of a water reducer, and 0.03-0.07 wt % of a thickener. The composite fiber mesh is prepared by dipping a composite fiber in a water-borne epoxy resin with a curing agent, performing uniform mixing, taking out and spreading the composite fiber, and then cutting or crushing the composite fiber into a small piece of mesh structure; and the composite fiber includes a PVA fiber and a carbon fiber, or a PVA fiber and a basalt fiber, at a weight ratio of (0.3-0.6):1.

Abstract: An apparatus and method for detecting certain materials on a surface using the fluorescence principle. The invention is suitable for materials that emit fluorescence when excited by high energy (short wavelength) visible light or ultraviolet light. The apparatus irradiates a surface to be monitored with excitation light. The light that returns from the surface is analyzed. Fluorescence in the returned light signals the presence of the material to be detected. The invention uses light-emitting diodes, lasers, or other light sources to generate the excitation light, light-sensing integrated circuits or imaging sensors for measuring the fluorescence signals from materials on the monitored surface, light sensors for evaluating the excitation light, and operates with on and off cycles of the excitation light to obtain the signal.

Abstract: Disclosed are an information processing method and apparatus, a cloud terminal device, a cloud server, and a storage medium. The information processing method is applied to an information processing apparatus and includes: receiving first cloud desktop information sent by a cloud terminal device, wherein the first cloud desktop information is one of remaining pieces of cloud desktop information to be processed after the cloud terminal device selects second cloud desktop information from a plurality of pieces of cloud desktop information to be processed, and the plurality of pieces of cloud desktop information to be processed are sent by a cloud server to the cloud terminal device according to an information acquisition request sent by the cloud terminal device; performing signal form conversion on the first cloud desktop information to obtain first display information; and performing display processing on the first display information.

Abstract: A portable vacuum sealer, including a main body and a base; the main body includes a housing with an internal chamber, a vacuum pump provided in the internal chamber, and an airbag inserted into a bottom of the housing; a suction nozzle is provided on the airbag, and the vacuum pump is connected to the suction nozzle through a suction tube; the base is provided below the main body and detachably connected to the airbag by an engaging structure, in which the airbag shrinks to drive the base to move toward a bottom of the housing by the engaging structure when the vacuum pump is activated. Adopting the portable vacuum sealer, the airbag shrinks upwards to drive the base simultaneously to move upwards to abut the bottom of the main body when the vacuum pump is activated, which frees the consumer's hands, thereby significantly improving the packaging efficiency.