Abstract: The present disclosure provides an acoustic matching material applied to a matching layer of an ultrasonic probe. The acoustic matching material is prepared by adding additive into a matrix to form a mixture and curing the mixture. The matrix includes vinyl ester resin and a curing agent. The additive includes at least one of a thixotropic agent, a thickener, or a modified filler.

Abstract: An electric propulsion system includes a first stator segment including first teeth and first coils wound around the first teeth and a second stator segment including second teeth and second coils wound around the second teeth. A gap exists in an azimuthal direction between the first stator segment and the second stator segment. The electric propulsion system also includes a rotor frame and rotor magnets. The rotor magnets are attached to the rotor frame and configured to rotate the rotor frame in the azimuthal direction in response to the first coils or the second coils being provided current. The electric propulsion system also includes a propeller including a first blade attached to the rotor frame at a first distal end of the first blade and a second blade attached to the rotor frame at a second distal end of the second blade.

Abstract: Disclosed is a method for stripping a gallium nitride substrate, including: a gallium nitride substrate with a gallium nitride epitaxial structure directly grown on an upper surface thereof is acquired; an interior of the gallium nitride substrate is scanned and irradiated via the epitaxial structure by a laser beam, so as to generate a decomposition layer in the gallium nitride substrate, the laser beam being a laser having a pulse width on the order of less than 10?15 s, and a distance between the decomposition layer and the upper surface of the gallium nitride substrate being less than a thickness of the gallium nitride substrate; and the gallium nitride substrate is separated at the decomposition layer, so as to obtain a stripped gallium nitride substrate and a semiconductor device.

Abstract: The present disclosure provides a method and a system for quickly determining transient stability of a half-wavelength transmission system. The method includes: obtaining power and a power angle of a feeding-end generator of a half-wavelength transmission system; and determining transient power angle stability and a power angle instability mode of the half-wavelength transmission system by using a constructed index system, where two power angle instability modes, that is, an instability mode 1 and an instability mode 2, are specifically constructed for the half-wavelength transmission system based on an equal area method. Based on the equal area method, the present disclosure constructs two instability modes specific to the half-wavelength transmission system, so as to accurately describe transient power angle characteristics of the half-wavelength transmission system under a severe fault, and characteristics of the two instability modes are significantly different from those of an AC transmission mode.

Abstract: The present disclosure provides antibodies and antigen-binding fragments thereof that bind to human OX40 (ACT35, CD134, or TNFRSF4), a pharmaceutical composition comprising said antibody, and use of the antibody or the composition for treating a disease, such as cancer. In particular, the anti-OX40 antibody of the present invention does not interfere with the binding of OX40-ligand to its receptor.

Abstract: Methods, systems, and devices for wireless communication are described. In some systems, a user equipment (UE) may transmit, to a network entity, a first signal including a request to update a resolution of a phase shifting operation associated with beam-based communications. The UE may receive, from the network entity, a second signal approving the request. The UE may communicate using a beam according to an updated resolution of the phase shifting operation based on the second signal approving the request. Additionally, or alternatively, the UE may transmit a first signal including a request to suspend a beam refinement process based on the resolution of the phase shifting operation. The UE may receive a second signal approving the request to suspend the beam refinement process. The UE may communicate with the network entity using a beam based on suspending further beam refinement in response to the second signal.

Abstract: A gas absorption box includes a box body, at least one gas absorption member and an outer housing assembly, the box body has an accommodating cavity; the gas absorption member is elastic and is provided with a first inner cavity, and the first inner cavity is in communication with the outside of the box body; and the outer housing assembly is arranged in the accommodating cavity and is elastically connected to the box body, and the outer housing assembly has a second inner cavity for accommodating a gas absorbent, the second inner cavity being in communication with the first inner cavity, and the gas absorption member being capable of absorbing gas for the second inner cavity. When battery powder or some positive-electrode materials for batteries are transported, hydrogen generated by the battery powder or some positive-electrode materials for batteries gathers towards the upper portion of a ton bag.

Abstract: A method for generating an image of an object with a magnetic resonance imaging (MM) system is presented. The method includes first performing a calibration scan of the object. The calibration scan is performed with a zero echo time (ZTE) radial sampling scheme to obtain calibration k-spaces for surface coil elements and a body coil of the MRI system. The calibration scan is performed in such a manner that the endpoints of calibration k-space lines in each calibration k-space follow a spiral path. A plurality of calibration parameters are then obtained from the plurality of calibration k-spaces. A second scan of the object is then performed to acquire the MR image data. The image of the object is then generated based on the plurality of calibration parameters and the MR image data.

Abstract: Techniques pertaining to trigger-based (TB) implicit feedback for implicit beamforming in wireless communications are described. An apparatus (e.g., an access point (AP)) triggers each of one or more stations (STAs) to transmit a respective feedback. The apparatus estimates a respective steering matrix with respect to each of the one or more STAs based on the respective feedback. The apparatus then transmits a respective steered data to each of the one or more STAs based on the respective steering matrix.

Abstract: An embedded refrigerator which includes a cabinet, a door and a hinge assembly, the hinge assembly includes a first hinge part, a second hinge part and a switching assembly; when the door is in an opening process, the first hinge part moves relative to the switching assembly, and then, the second hinge part moves relative to the switching assembly; the hinge assembly drives the door to rotate in situ relative to the cabinet, then drives the door to move from the pivoting side towards the accommodating chamber, drives the door to move from the accommodating chamber towards the pivoting side, and then drives the door to continuously rotate in situ relative to the cabinet. The refrigerator can increase an opening-closing freedom degree of the door.

Abstract: An electronic device and a memristor-based logic gate circuit thereof. In the present application, a control end of a controllable switch is connected to a negative end of an output memristor in a MAGIC-based AND logic gate, and whether a second memristor is powered on is controlled by the controllable switch. Thus, when resistance value states of two input memristors in the AND logic gate are different, the controllable switch will conduct and power on the second memristor, and the second memristor will present a low-resistance state at this time. When the resistance value states of the two input memristors are the same, the controllable switch will not conduct and the second memristor will then remain the state unchanged, i.e., presents a high-resistance state. An exclusive OR logic gate is formed by combining the two input memristors and the second memristor.

Abstract: This disclosure relates to a display panel, including a display panel main body and a light modulation structure on a light-emitting side of the display panel main body, where the display panel main body includes pixels; the light modulation structure includes a substrate, a first medium, a second medium, and a cover layer; the first medium includes a metasurface structure including multiple metasurface structural units arranged on a surface of the substrate close to the cover layer, the metasurface structural units are in one-to-one correspondence with the pixels and each include multiple nano-pillars; the second medium includes a gas layer filling between the substrate and the cover layer, which are spaced from each other by support pillars, and a height of the support pillars is greater than that of the nano-pillars in a direction perpendicular to the substrate. This disclosure also relates to a method for manufacturing a display panel.

Abstract: An embedded refrigerator which includes a cabinet, a door, and a hinge assembly, the hinge assembly includes a first hinge part, a second hinge part and a switching assembly; when the door is in an opening process, the first hinge part moves relative to the switching assembly, and then, the second hinge part moves relative to the switching assembly; the hinge assembly drives the door to rotate in situ relative to the cabinet, and then drives the door to continuously rotate in situ relative to the cabinet. The refrigerator can increase an opening-closing freedom degree of the door, and various motion tracks may be generated to adapt to various application scenarios.

Abstract: A door-opening-assisted embedded refrigerator which includes a cabinet, a door and a hinge assembly, the cabinet includes a rear wall and an opening, and a direction from the rear wall towards the opening serves as a first direction; the hinge assembly includes a first hinge part, a second hinge part and a switching assembly; when the door is in an opening process, the first hinge part moves relative to the switching assembly, and then, the second hinge part moves relative to the switching assembly; the hinge assembly drives the door to rotate in situ relative to the cabinet, then drives the door to move away from the cabinet in the first direction, and then drives the door to continuously rotate in situ. The refrigerator can increase an opening-closing freedom degree of the door, and can adapt to different application scenarios.

Abstract: A refrigerator with a switchable hinge assembly which includes a cabinet (10), a door (20) and the hinge assembly (30) for connecting the cabinet (10) and the door (20), wherein the hinge assembly (30) includes a plurality of hinge parts (31,32), and a switching assembly (40); when the door (20) is in an opening process, the switching assembly (40) controls the plurality of hinge parts (31,32) to successively operate in a first sequence, and when the door (20) is in a closing process, the switching assembly (40) controls the plurality of hinge parts (31,32) to successively operate in a second sequence, and the first sequence is opposite to the second sequence. An opening-closing freedom degree of the door (20) may be increased by the refrigerator with the switchable hinge assembly, and various motion tracks may be generated to adapt to different application scenarios.

Abstract: The present invention provides a self-rotating asphalt emulsification mixing production apparatus, which relates to a technical field of construction engineering. It includes a rotatable inner tank, arranged in an outer tank, wherein the inner tank is provided with a blending shaft; a second blending blade, distributed on an outer wall of the inner tank; the emulsification tank is provided with a partition plate, an overfeed hole is provided at a center of the partition plate; a rotary shaft is provided at a center of the emulsification tank, and the rotary shaft is connected with the blending shaft through the overfeed hole; a first disk and a second disk are provided on the rotary shaft. The present invention can carry out more efficient mixing of the asphalt, better heating uniformity, and at the same time realize a integrated processing of the mixing and emulsification of asphalt and soap.

Abstract: Waveguides comprising materials with refractive index greater than or equal to 1.8 and methods of patterning waveguides are disclosed. Patterned waveguides comprising materials with refractive index greater than or equal to 1.8 can be incorporated in display devices, such as, for example wearable display devices to project virtual images to a viewer. A waveguide may be transparent and may comprise a substrate comprising a first material having a first refractive index greater than about 2.0. Diffractive features may be formed, on the substrate, of a second material having a second refractive index that is lower than the first refractive index. A third material may be disposed over the diffractive features and may have a third refractive index that is higher than the second refractive index.

Abstract: A coupler buffer device mounting structure for small-fastening-torque pushing under a compact space includes a double-headed stud passing through an installation fabrication hole of a vehicle body structure; a nut screwed on a first end of the double-headed stud; a push nut screwed on a second end of the double-headed stud and provided with a plurality of axial screw holes in a circumferential direction; and a plurality of push screws screwed into the circumferentially provided axial screw holes of the push nut, where the coupler buffer device is clamped and fixed to the vehicle body structure by heads abutting against the coupler buffer device via a hard washer. The coupler buffer device mounting structure achieves the passing of the double-headed stud from a coupler side to a vehicle body side by using the double-headed stud, the nut, the push nut and the plurality of push screws in combination.

Abstract: This application provides a display method and an electronic device. In the method, in a state switching process of a foldable display screen of the electronic device, the electronic device may display a target interface whose size changes on the foldable display screen. According to the application, smooth transition of interface switching in the state switching process of the foldable display screen can be achieved, so that a visual effect in which a size change of the target interface coincides an actual state switching process of the foldable display screen is implemented, thereby improving visual experience of a user.