Abstract: Provided is a host factor specific for hepatitis B virus (HBV) infection. The specific host factor CREBH can remarkably enhance HBV infection. The specific host factor can, on the one hand, enhance entry of HBV, and on the other hand, enhance transcription of HBV to some extent. In the CREBH regulatory pathway there is a specific host factor SCARF2. During HBV infection, an N-terminus EGF-like domain of SCARF2 plays a crucial role in the infection and entry of HBV. The two correlated specific host factors provide a new target for inhibiting HBV infection.

Abstract: A battery and an electrical apparatus are provided. The battery includes a battery group having a first battery row and a second battery row arranged along a first direction. Each battery row includes a plurality of battery cells arranged sequentially along a second direction intersecting the first direction. The battery further includes a busbar assembly having a first busbar connected to the battery cells of the first battery row and a second busbar connected to the battery cells of the second battery row. An isolation member is disposed such that, along the first direction, at least a portion of the isolation member is positioned between the first busbar and the second busbar. The isolation member reduces electrical interference between the busbars, thereby improving battery reliability and reducing short-circuit risk.

Abstract: The present disclosure relates to an electrode sheet and a preparation method of the electrode sheet. The electrode sheet comprises a current collector, a transition layer, and an active material layer. The transition layer is connected to the current collector, wherein a side of the transition layer facing away from the current collector is provided with a first groove. The active material layer is connected to the current collector, wherein the active material layer covers the transition layer, at least a portion of the active material layer is located in the first groove; and the active material layer is provided with a removal region, the removal region corresponds to the transition layer.

Abstract: A common-mode voltage cancellation (CMVC) circuit and method of forming is disclosed. The CMVC circuit includes a set of input lines configured to receive a respective input phase voltage, each respective input phase voltage including a common-mode voltage component, and a set of output lines configured to provide a respective output phase voltage. The CMVC circuit also includes a set of first capacitors electrically coupled between a respective input line and a node, and a coupled inductor, having a primary winding and at least one secondary winding, the at least one secondary winding electrically coupled in series between a respective input line and a respective output line. A first resistor and the primary winding are electrically coupled in series between the node and an electrical ground.

Abstract: A vehicle lamp illumination module and a vehicle lamp are provided. The vehicle lamp illumination module includes a circuit board, a light source arranged on the circuit board, and a reflective mirror and an optical lens arranged in sequence in the direction of light path transmission, light emitted from the light source is reflected by the reflective mirror and is then projected through the optical lens to form an illumination light pattern; the light source includes a first light source and a second light source which have the same light emission direction; the reflective mirror includes a first reflecting surface corresponding to the first light source and a second reflecting surface corresponding to the second light source; the optical lens includes a first optical lens corresponding to the first reflecting surface and a second optical lens corresponding to the second reflecting surface.

Abstract: The present invention relates to an in-situ micro-nano impact indentation testing instrument, falling within the technical field of material micromechanical testing. The instrument comprises a nitrogen generation module, an environmental chamber, a high/low temperature loading module, an optical-infrared in-situ monitoring module, an electromagnetic-piezoelectric coupling impact module, etc. After the nitrogen is introduced into the environmental chamber and the test area is determined by microscopic imaging, the electromagnetic-piezoelectric coupling impact module can drive an indenter to indent a specimen. An acoustic emission sensor embedded in the high/low temperature loading module can monitor the surface crack propagation of the specimen. The optical-infrared in-situ monitoring module can perform real-time high-speed optical imaging and infrared imaging on the impact indentation process. The present invention can perform micro-nano impact indentation testing on the material at high or low temperatures.

Abstract: Disclosed is a method for manufacturing a wound battery cell including the following steps covering and welding two metal sheets respectively onto the two conductive layers of a same composite current collector; after covering and welding the two metal sheets respectively onto the two conductive layers, cutting the two metal sheets respectively to form a plurality of metal sub-sheets, and then winding the metal sheets and the composite current collector together, such that each of the metal sub-sheets includes a stacking portion and a protruding portion, the stacking portion is configured to cover the conductive layer, and the protruding portion protrudes out of an edge of the tab portion; and welding the metal strip tab and all the protruding portions of the same composite current collector.

Abstract: Provided are a characteristic signal injection method and device suitable for active detection-based protection, which are applied to a distributed power supply. The distributed power supply is connected to a power distribution grid system.

Abstract: Sprinkler systems and irrigation methods are provided. A sprinkler system for irrigating zones with different spray patterns includes a sprinkler head releasably connectable to a first controller and a second controller. The sprinkler head includes an interface for receiving: a first input causing the sprinkler head to irrigate with a first spray pattern; and a second input causing the sprinkler head to irrigate with a second spray pattern different from the first spray pattern. The first controller stores the first input provides the first input to the sprinkler head to cause the sprinkler head to irrigate with the first spray pattern during irrigation of a first zone. The second controller stores the second input and provides the second input to the sprinkler head to cause the sprinkler head to irrigate with the second spray pattern during irrigation of a second zone.

Abstract: A winding mechanism and a winding device. The winding mechanism includes at least two sets of unwinding mechanisms and a first clamping assembly. The unwinding mechanism is configured to unwind and convey an electrode sheet and is capable of independently conveying the electrode sheet, and the unwinding mechanism includes an electrode sheet starting end and an electrode sheet free end. The first clamping assembly is configured to enable the electrode sheet free end of any of the unwinding mechanisms to be conveyed to a next process. Each set of unwinding mechanism of the winding mechanism is capable of operating independently, and the electrode sheet free end of each unwinding mechanism is conveyed to a next process through the first clamping assembly.

Abstract: A core-shell gradient ternary precursor and a preparation method and application thereof. The preparation method includes (1) mixing a terephthalic acid solution with alkaline liquor to obtain a terephthalic acid salt solution, adding a nickel source solution for a reaction to obtain a Ni-MOF solution, mixing the Ni-MOF solution with ammonia water, and adjusting a pH value to obtain a base solution; and (2) adding a nickel-cobalt-manganese ternary mixed salt solution, a liquid alkali solution, and an ammonia-water solution simultaneously to the base solution obtained in step (1) for a co-precipitation reaction, and obtaining the core-shell gradient ternary precursor after aging treatment. The Ni-MOF is pre-prepared and used as a core for the co-precipitation reaction, to obtain the core-shell like precursor with a gradient. Carbon in the core of the core-shell gradient ternary precursor reacts with oxygen, thereby reducing a nickel oxidation state on particle surfaces and reducing crack generation.

Abstract: A battery cell, comprising: a current collector assembly comprising a main body and current collector tabs, wherein the main body is provided with a connecting end surface, each current collector tab comprises a first portion and a second portion which are connected to each other, the first portion is connected to the connecting end surface, the second portion protrudes from the first portion in the thickness direction of the main body, and the first portion, the second portion and the main body together define a groove; and metal strip tabs each comprising a protruding portion, a connecting portion and a body portion, wherein the connecting portion is connected to the body portion and protrudes from the body portion in the thickness direction of the main body, and the protruding portion is connected to the connecting portion and protrudes from the connecting portion in the width direction of the main body.

Abstract: A composite treatment process includes steps: conveying the waste plastic bottles and adjusting the same to be upright, stretching, feeding, slitting, screening waste materials and plastic strips, cleaning the plastic strips, preliminarily removing water from the plastic strips, and dewatering and drying the plastic strips. According to the present invention, slit products of bottle caps and bottle collars are separated by the physical properties of the slit products of the bottle caps, the bottle collars and bottle bodies to obtain bottle body plastic strips, so that a step of removing label stickiness by heating and boiling and a step of removing cap impurities by floating and filtering are omitted, thereby reducing energy consumption and wastewater.

Abstract: An assembly for measuring impedance of a battery includes a first current loop including a first capacitor and a second capacitor in series with the first capacitor, a second current loop in parallel with the first current loop, the second current loop including a third capacitor, an impedance sensor in electrical communication with the first and second current loops, and a controller module configured to determine an impedance of the battery based on data from the impedance sensor indicating a first current frequency from the first current loop and a second current frequency from the second current loop.

Abstract: A meta-learning-based adaptive motion control method and apparatus for an underactuated ship are disclosed. The method includes steps of acquiring ship trajectory data including a set of ship status and control inputs under different environmental conditions and trajectory tracking tasks, constructing a ship trajectory model set according to the ship trajectory data, determining an adaptive control law according to a target state vector, a state vector of a controlled system and a state vector of a reference model, calculating a meta-parameter by meta-learning according to the ship trajectory model set and the adaptive law, and performing adaptive motion control of the underactuated ship according to the meta-parameter.

Abstract: An electrical component and shield assembly can include a set of conductors, with the shield assembly having a body at least partially encircling the set of conductors. The shield assembly can include a first shield layer radially spaced from a second shield layer. The first shield layer can include a magnetic material. The second shield layer can an electrically-conductive material.

Abstract: A selenium-containing hyperbranched polymer (HBP), and a preparation method and application thereof are provided, belonging to the technical field of intelligent biomimetic materials preparation. The preparation method includes the following steps: preparing a compound M1; preparing an HBP; dissolving the compound M1 in anhydrous dichloromethane (DCM), adding anhydrous N,N-dimethylformamide (DMF) and oxalyl chloride, stirring an obtained mixture, and removing the anhydrous DCM and excess oxalyl chloride under reduced pressure to obtain a reactant A; under nitrogen protection, suspending the HBP and triethylamine (TEA) in anhydrous tetrahydrofuran (THF), and stirring to obtain a reactant B; and dissolving the reactant A in anhydrous THF, dropwise adding an obtained solution to the reactant B, heating an obtained mixture to room temperature, stirring, removing the anhydrous THF, redissolving an obtained product in anhydrous THF, and conducting dialysis to obtain the selenium-containing HBP.

Abstract: A power converter is provided. In one aspect, the power converter has a first inverter and a second inverter electrically coupled with one another and with a power bus. First switches of the first inverter are arranged symmetrically with second switches of the second inverter so that, when switched in a pulse width modulated switching scheme, the first switches generate a first common mode signal and the second switches generate a second common mode signal that is one hundred eighty degrees out of phase with the first common mode signal. In another aspect, the power converter includes a buck stage having one or more pairs of symmetrically arranged buck switches that can be controlled to reduce or eliminate common mode electromagnetic interference in the buck stage. The power converter can also include one or more pairs of symmetrically arranged inductors.

Abstract: Provided are high and low beam integrated lighting apparatus and vehicle lamp. Apparatus includes two light-emitting modules arranged in vertical direction. Each light-emitting module includes multiple light sources and optical units arranged in transverse direction. Each optical unit includes reflection part and lens unit located on light-emitting side of reflection part. Light sources are arranged corresponding to reflection parts. Each reflection part is provided with reflection face. Focuses of lens units are provided on reflection faces or near reflection faces. Light rays emitted by light sources are reflected by reflection faces and then are emitted by lens units to form light form units. Multiple light form units are combined to form light-emitting light forms of light-emitting modules. Two light-emitting modules are respectively low-beam module and high-beam module. Light-emitting faces of two light-emitting modules are connected to form smooth curved face.

Abstract: A test system to conduct a sequence of electrical tests of an electrical cable is disclosed. The system includes a testing unit, a set of sensors, and two circuits. The two circuits are switchably coupled to a common voltage source and selectively electrically coupleable to the electric cable to enable the testing unit to conduct a respective test of the electrical cable.