Abstract: An electrode assembly, a battery cell, a battery, and an electrical apparatus are disclosed. The electrode assembly includes a first electrode plate, the electrode plate includes a current collector and active material layers arranged on the current collector, the active material layer is provided with a plurality of material removal regions at intervals in an extension direction (L) of the first electrode plate, and the material removal region extends in a width direction (Y) of the first electrode plate; the active material layer is provided with a marking portion, a width of the marking portion in the extension direction (L) of the first electrode plate is greater than or equal to a width of the material removal region, and the marking portion spans across the material removal region.

Abstract: Provided is a circuit board structure including a substrate, a loop-wrapping ground layer, an insulating structure, a first build-up layer, a top wiring layer, a bottom wiring layer, a first conductive via, and a plurality of second conductive vias. The aforementioned structure defines a signal transmitting structure. An equivalent circuit of the signal transmitting structure at least includes a first equivalent circuit, a second equivalent circuit, a third equivalent circuit and a fourth equivalent circuit, which correspond to different uniform transmitting sections respectively. The first equivalent circuit, the second equivalent circuit, the third equivalent circuit and the fourth equivalent circuit are connected in series with each other according to an ABCD transmission matrix series connection principle.

Abstract: Some embodiments of this application provide an electrode assembly, a battery cell, a battery, and an electrical device. The electrode assembly includes at least one first electrode plate, where the first electrode plate is bent and includes: a current collector; and an active material layer, disposed on the current collector. The active material layer includes a material-removed region in at least a part of bends of the first electrode plate. The material-removed region extends along a width direction of the first electrode plate. A depth of the material-removed region does not exceed a thickness of the active material layer at which the material-removed region is located.

Abstract: Methods of making such compounds, powders, and cathode active materials are described. The powders are formed of particles with specific properties: a particle size distribution with a D50 ranging from 10 ?m to 20 ?m, a D10 less than 8 ?m, and a D99 of the particles ranges from 25 ?m to 35 ?m. The final compound is represented by the Formula Li?(Co1-x-y-zMnxMezAly)O?, wherein 0.95<?<1.05, x?1.00, 0<y?0.04, 0<z?0.050, and ??2.

Abstract: A system and method for monitoring and optimizing work assistant search engines implemented within secured enterprise computing systems include one or more processing devices to receive diagnostic data of a work assistant search engine from a secured enterprise computing system. The one or more processing devices may further determine, by analyzing the diagnostic data, a search quality metric value associated with the feature values and the scores. Responsive to determining that the search quality metric value differs from a target search quality metric value by a predetermined threshold value, the one or more processing devices may further determine an updated score model, and provide the updated score model to the secured enterprise computing system to update the work assistant search engine.

Abstract: A three-side conveyor equipment for silicon wafers is provided, including an insertion container. A bottom conveyor belt and two side conveyor belts are arranged in the insertion container, the two side conveyor belts are arranged opposite to each other above the bottom conveyor belt, the bottom conveyor belt is connected to the side conveyor belts through a transmission assembly, and a linear speed of the bottom conveyor belt is same as a linear speed of each of the side conveyor belts, and each of the side conveyor belts is arranged on a movable bracket that drives the side conveyor belt to clamp or loosen, and the insertion container is provided with two pushing assemblies that respectively push the two movable brackets to move. The two side conveyor belts can clamp or loosen the silicon wafers, and at the same time maintain a same linear speed as the bottom conveyor belt.

Abstract: A sweat extraction and monitoring system comprises a triboelectric nanogenerator (TENG) for inducing localized sweating for a human skin to generate sweat, iontophoresis electrodes electrically connected to the TENG and configured to be operably electrically contacting the human skin, at least one microfluidic channel for receiving the sweat, at least one biosensor for sensing the sweat received in the at least one microfluidic channel, and at least one sweat-activated battery configured to be actuatable by the sweat for powering the at least one biosensor.

Abstract: A roller conveying rack includes two carrier plates with rectangular shapes, wherein the carrier plates are arranged in parallel and aligned, legs are disposed on both sides of a bottom of each carrier plate in a longitudinal direction of the carrier plate, the legs on different carrier plates are connected by sleeve shafts broken in a middle portion, rolling sleeves broken in a middle portion are arranged between upper portions of the carrier plates in the longitudinal direction of the carrier plates, movable shafts are disposed at the broken middle portion of the sleeve shafts and connecting shafts are disposed at the broken middle portion of the rolling sleeves, insertion holes are provided on each sleeve shaft between the legs and threaded holes are provided on each movable shaft between the legs, and each insertion hole is connected to a corresponding threaded hole by a bolt.

Abstract: A display substrate, a manufacturing method therefor and a display device are provided. The display substrate includes pixel light emitting regions and pixel spacer regions between adjacent pixel light emitting regions; in a plane perpendicular to the display substrate, the display substrate includes a base substrate and a light emitting structure layer on the base substrate, the light emitting structure layer at least includes an anode, a pixel definition layer and at least one photo spacer, a pixel opening is provided in the pixel definition layer in each pixel light emitting region, the pixel opening exposes the anode, a spacer opening is provided in the pixel definition layer in the pixel spacer region, the photo spacer is provided in the spacer opening, and an orthographic projection of the photo spacer on the base substrate is within a range of an orthographic projection of the spacer opening on the base substrate.

Abstract: A display panel and a display device are provided. The display panel includes sub-pixels, data lines and gate lines. The sub-pixels include pixel circuits connected to the data lines and the gate lines. The display panel includes display subregions and selection signal line groups in one-to-one correspondence, each display subregion includes at least two sub-pixels, each selection signal line group includes selection signal lines, and the selection signal lines corresponding to different display subregions are insulated from each other; the pixel circuit includes a transistor in which an active semiconductor layer includes a first part and a second part, the first part overlaps with the gate line electrically connected with the transistor, and the second part overlaps with at least one selection signal line, and the gate line and the selection signal line are both configured to turn on the transistor upon being input with a turn-on voltage.

Abstract: The present disclosure provides a preparation method of a yak hide-derived oligopeptide ferrous chelate with a high antioxidant activity. The preparation method includes preparing a yak hide-derived oligomeric collagen peptide and subjecting the yak hide-derived oligomeric collagen peptide as a protein source to chelation with an iron source in water. A pretreated yak hide is subjected to enzymatic hydrolysis under a pH value of 7 at 50° C. for 4 h with an amount of an enzyme added at 2% to obtain a yak skin-derived collagen with a molecular weight of less than 2 kDa; the chelation is conducted in a peptide-to-iron mass ratio of 1:1 to 5:1 with a peptide concentration of 1% to 5% at 30° C. to 70° C. for 20 min to 60 min under a pH value of 3 to 8; and an iron chelating capacity is 42.72 mg/g under optimal preparation conditions.

Abstract: The present application discloses a lithium nickel manganate positive electrode material, a preparation method therefor and an application thereof. The lithium nickel manganate positive electrode material has a molecular formula of Li?Ni?Mn2-?M?O4-?/N, where 0.95???1.1, 0.4???0.6, 0.0005???0.02, 0???0.2, M is a single-crystal dispersing element, and M is at least one of V, Nb, Ta, Mo or W; N represents a coating layer, and the coating layer includes a P compound and/or an Al compound, and a coating amount of N is 500-10000 ppm. By means of adding a small amount of a single-crystal dispersing element (V, Nb, Ta, Mo or W), a high-voltage nickel manganese material having good dispersity of single crystals is prepared. By means of uniformly coating the P compound and/or the Al compound to the lithium nickel manganate positive electrode material, the direct contact between the positive electrode material and an electrolyte, is avoided.

Abstract: An impact tool includes a motor including or connected to a drive shaft for outputting power and is rotatable about a first axis, an impact assembly including a main shaft and a spring sleeved on the main shaft, a transmission assembly for transmitting the power output by the drive shaft to the main shaft, a main shaft bearing for supporting the main shaft, and a second bearing for supporting the drive shaft. The projections of the second bearing, the main shaft bearing and the spring on a reference plane perpendicular to the up and down direction have an overlapping region.

Abstract: A lighting device includes a base, a panel assembly, and a power supply assembly. The panel assembly is at least partially connected to the base and includes a luminous body. The power supply assembly is connected to the lighting device. The panel assembly includes a main panel and a plurality of auxiliary panels. The main panel is fixedly connected to the base, a first auxiliary panel among the plurality of auxiliary panels is rotatably connected to the main panel, and a second auxiliary panel among the plurality of auxiliary panels is rotatably connected to the first auxiliary panel.

Abstract: A display panel includes a substrate, and a plurality of first pixel circuits, a plurality of first light-emitting devices and a plurality of first light-shielding portions that are located in a functional device setting region. The plurality of first light-emitting devices are disposed on a side of the plurality of first pixel circuits away from the substrate. A first light-emitting device includes a first electrode electrically connected to a first pixel circuit. The plurality of first light-shielding portions are arranged at intervals on a side of the plurality of first light-emitting devices away from the substrate. Each first light-shielding portion is provided with a first opening therein, and each first opening corresponds to a single first light-emitting device. An orthographic projection of a first portion of the first pixel circuit on the substrate is located within an orthographic projection of a first light-shielding portion on the substrate.

Abstract: An antenna includes a cross-polarized feed signal network configured to convert first and second RF input feed signals to first and second pairs of cross-polarized feed signals at respective first and second pairs of feed signal output ports. A patch radiating element is provided, which is electrically coupled to the first and second feed signal output ports. The patch radiating element includes an electrically conductive forward-facing surface thereon, which is segmented into four quadrants by four generally L-shaped slots within the electrically conductive forward-facing surface. These four generally L-shaped slots are positioned back-to-back relative each other so that a cross-shaped portion of the electrically conductive forward-facing surface extends between the four generally L-shaped slots and radially outward towards four respective points on a perimeter of the patch radiating element.

Abstract: The present disclosure provides an intelligent monitoring system and method for wire net wafering. The system includes a monitoring unit, equipped with a monitor for capturing position data of cutting wires in a wire net; and a control unit, provided with a controller for receiving the data captured by the monitor, processing the data and notifying a wafering machine based on results of the processing to perform optimization and adjustment. This can solve the technical problem of being unable to monitor the status of a wire net in real time during a wafering process in the existing arts, automatically monitor the status of curvature of the wire net, judge whether the status of the wire net is abnormal, and effectively notify the wafering machine in time, if a problem is encountered, to perform parameter adjustment or transfer to manual intervention.

Abstract: A monitoring mechanism at least includes a monitoring unit, the monitoring unit is disposed in a slicing chamber and is configured to continuously monitor a state of a wire mesh and have no contact with the wire mesh. The monitoring mechanism of the present disclosure can continuously monitor the state of the wire mesh in the slicing chamber, especially accurately and timely track and monitor in a location of wire mesh nonstop in a non-contact way in a darkroom with serious vapor and a lot of silicon mud during slicing, which provides a solid foundation for precise determination of an abnormal wire mesh. The entire structure occupies a small space in the limited slicing chamber, and the structure is simple and safe such that data of the state of the wire mesh can be obtained timely accurately to prevent a risk of missing or wrong determination.

Abstract: A wire net monitoring device includes at least one monitor configured to monitor at least one wire net. A signal route of the at least one monitor is configured to monitor the at least one wire net near a side of a workpiece along a rotation direction of the at least one wire net, and the signal route of the at least one monitor crosses a contact surface between the at least one wire net and the workpiece.

Abstract: A material frame unlocking device may include a material frame and an insert slot, a clamping mechanism for clamping a silicon wafer is arranged on the material frame, and an unlocking mechanism for fitting the clamping mechanism is arranged on the insert slot. The clamping mechanism includes two clamping rods capable of opening and closing movements, an end of each of the two clamping rods is provided with a connecting rod, a middle portion of the connecting rod is provided with a hinge point, and an elastic assembly is arranged at one end of the connecting rod away from respective clamping rod, when the elastic assembly is controlled by the unlocking mechanism, the connecting rod rotates around the hinge point, and the two clamping rods are opened to separate the two clamping rods from each other.