Abstract: The present invention is applicable to the technical field of material processing and provides an aluminum alloy and a preparation method thereof. The preparation method of the aluminum alloy includes: weighing raw material components according to a preset weight ratio; melting the weighed raw materials, sequentially performing refinement, standing, slag removal, degassing and filtering, and then performing horizontal casting to obtain an aluminum alloy ingot; homogenizing the ingot; heating the ingot to 440-500° C., and placing the ingot in an extruder with an extrusion ratio of 30-100 for extrusion treatment; annealing the extruded blank; heating the annealed blank to 440-480° C. for deformation treatment, and controlling the deformation amount in the thickness direction to be 12%-28%; carrying out solution treatment on the deformed blank; and subjecting the blank after the solution treatment to artificial aging treatment.

Abstract: A display screen and a terminal are provided. The display screen includes a substrate, a light-emitting layer, and a filter layer disposed in sequence. The filter layer includes a plurality of color filters with diffusion function. The display screen is provided with the color filters, so that light emitted by the light-emitting layer is diffused at various angles through diffusion particles in the color filters, thereby effectively increasing viewing angles of the display screen of the terminal.

Abstract: Embodiments described herein include systems and techniques for converting (i.e., transducing) a quantum-level (e.g., single photon) signal between the three wave forms (i.e., optical, acoustic, and microwave). A suspended crystalline structure is used at the nanometer scale to accomplish the desired behavior of the system as described in detail herein. Transducers that use a common acoustic intermediary transform optical signals to acoustic signals and vice versa as well as microwave signals to acoustic signals and vice versa. Other embodiments described herein include systems and techniques for storing a qubit in phonon memory having an extended coherence time. A suspended crystalline structure with specific geometric design is used at the nanometer scale to accomplish the desired behavior of the system.

Abstract: The present disclosure relates to systems and methods for generating a document based on a template document. The system may perform the methods to crawl across a multi-level tree along a path from a root to a plurality of leaf nodes. The multi-level tree may include a plurality of intermediate level nodes, wherein each of the plurality of intermediate level nodes may be associated with one or more sub-nodes at a next level. Each of the plurality of intermediate level nodes may include an intermediate subject of the intermediate level node, a semantically incomplete intermediate description related to the intermediate subject, and template data defining a position that the intermediate description may be in a corresponding template document.

Abstract: An accelerometer structure, a method for preparing the accelerometer structure and an acceleration measurement method are provided. The accelerometer structure includes a substrate having a groove structure, a test mass, a plurality of nano-tethers, and a nano-photonic-crystal measurement unit. The test mass, nano-tethers, and the nano-photonic-crystal measurement unit are suspended above the groove structure. A nano-photonic-crystal resonant cavity is formed in the nano-photonic-crystal measurement unit, and an acceleration of the test mass is characterized by a resonant frequency of the nano-photonic-crystal resonant cavity. The present disclosure provides a photoelasticity-based opto-micromechanical accelerometer structure, which uses a cavity resonance tension sensor in a nano-photonic-crystal cavity to measure a tension of the nano-photonic-crystal resonant cavity.

Abstract: Embodiments described herein include systems and techniques for converting (i.e., transducing) a quantum-level (e.g., single photon) signal between the three wave forms (i.e., optical, acoustic, and microwave). A suspended crystalline structure is used at the nanometer scale to accomplish the desired behavior of the system as described in detail herein. Transducers that use a common acoustic intermediary transform optical signals to acoustic signals and vice versa as well as microwave signals to acoustic signals and vice versa. Other embodiments described herein include systems and techniques for storing a qubit in phonon memory having an extended coherence time. A suspended crystalline structure with specific geometric design is used at the nanometer scale to accomplish the desired behavior of the system.

Abstract: A synchronization method and an electronic device are provided. The synchronization method includes receiving, in a case that a first electronic device is in communication connection with a second electronic device, a running interface of a first application sent by the second electronic device. The synchronization method further includes receiving, in a case that the first electronic device runs the first application, target application data of the first application sent by the second electronic device. The synchronization method also includes synchronizing the target application data to the first application run on the first electronic device.

Abstract: A low-dispersion single-mode optical fiber includes a core and a cladding covering the core. The core has a relative refractive index difference of 0.30-0.65% and a radius of 2.5-4.5 ?m. The cladding layer including first, second, third cladding layers and an outer cladding arranged sequentially from inside to outside. The first cladding layer covers the core, and has a relative refractive index difference of ?0.70% to ?0.30% and a radius of 4.5-7.5 ?m. The second cladding layer covers the first cladding layer, and has a relative refractive index difference of ?0.20% to 0.25% and a radius of 7.0-12.0 ?m. The third cladding layer covers the second cladding layer, and has a relative refractive index difference of ?0.60% to 0.00% and a radius of 10.0-20.0 ?m. The outer cladding covers the third cladding layer, and is a layer made of pure silicon dioxide glass.

Abstract: The present invention provides a method for preparing a micro-cavity array surface with an inclined smooth bottom surface based on an air molding method. The method includes: preparing a micro-cavity array surface; preparing an auxiliary microstructure polymer template, and performing plasma treatment on the auxiliary microstructure polymer template; uniformly spreading a layer of a liquid polymer film to be formed on the auxiliary microstructure polymer template subjected to the plasma treatment; placing a gap bead in an empty position on the micro-cavity array surface; placing the auxiliary microstructure polymer template spread with the liquid polymer film on the gap bead on the micro-cavity array surface, maintaining this state, and feeding the auxiliary microstructure polymer template into a vacuum drying oven; and heating and solidifying the liquid polymer film, and separating the micro-cavity array surface to obtain the micro-cavity array surface with the inclined smooth bottom surface.

Abstract: A method for extracting f wave from a single-lead electrocardiography signal is provided. The method includes: establishing a two-channel temporal convolutional neural network model, including two coding submodules, two mask estimation submodules, an information fusion module and two decoding submodules; constructing a training data set of ECG signals; training the two-channel temporal convolutional neural network model, and saving the trained model. The two-channel temporal convolution neural network encodes and decodes a QRST complex and the f wave respectively, and uses a mask of information fusion to estimate and construct regular items to restrict a distribution difference of QRST component coding features, so as to reduce the distortion of the QRST complex, select potential features of a QRST complex and f wave with high signal-to-noise ratio, and thus improve a detection accuracy of the f wave.

Abstract: Systems and methods are provided for generating training data from queries and user interactions associated with media collections related to the queries, and training a machine learning model using the generated training data to generate a trained machine learning model. The systems and methods further provide for receiving a prediction request comprising a query for relevant media collections, analyzing the query to determine query features, determining a plurality of media collections for the query, analyzing the plurality of media collections to determine media collection features for each media collection of the plurality of media collections, and generating, using the trained machine learning model, a semantic matching score for each media collection of the plurality of media collections based on matching the query features to the media collection features for each media collection of the plurality of media collections.

Abstract: A superconducting quantum processor unit for quantum computing is provided. The processor unit is formed from the union of a qubit chip and a wiring chip with superconducting bonding bumps and spacers. The bumps may be densely distributed around active elements between the two chips and effectively form a Faraday-Cage around the qubits, control signal waveguides etc. The qubit chip has strategically spaced qubits and an inductively coupled probe line and the wiring chip has a bus coupling resonator with a number of voltage nodes and anti-nodes, a resonator pump and at least one SQUID. Magnetic flux applied through the SQUIDs changes their impedances and modifies the microwave boundary conditions of the bus. This allows in-situ shifting of electric field distributions of the resonance modes of the bus along the length of the bus. This tunes the coupling rates of the bus to all qubits simultaneously.

Abstract: A cloud system of non-invasive measuring blood glucose is disclosed, and includes a non-invasive measuring blood glucose device, a mobile electronic device, and a cloud server for implementing a process of cloud measuring blood glucose. The non-invasive measuring blood glucose device is intended for a user to contact, and the mobile electronic device executing an application is in a non-contact manner connected to the non-invasive measuring blood glucose device. The cloud server is connected to the mobile electronic device. In particular, the non-invasive measuring blood glucose device generates a stimulating signal for the user to contact, and then induces a sensing signal respective of the stimulating signal, and the mobile electronic device receives and further transmits the sensing signal to the cloud server. The cloud server calculates and transmits blood glucose to the mobile electronic device for instantly displaying the blood glucose for the user.

Abstract: A method for extracting f wave from a single-lead electrocardiography signal is provided. The method includes: establishing a two-channel temporal convolutional neural network model, including two coding submodules, two mask estimation submodules, an information fusion module and two decoding submodules; constructing a training data set of ECG signals; training the two-channel temporal convolutional neural network model, and saving the trained model. The two-channel temporal convolution neural network encodes and decodes a QRST complex and the f wave respectively, and uses a mask of information fusion to estimate and construct regular items to restrict a distribution difference of QRST component coding features, so as to reduce the distortion of the QRST complex, select potential features of a QRST complex and f wave with high signal-to-noise ratio, and thus improve a detection accuracy of the f wave.

Abstract: A low-dispersion single-mode optical fiber includes a core and claddings covering the core. The core has a relative refractive index difference of 0.30-0.65% and a radius of 2.5-4.5 ?m. The claddings include first, second, third cladding layers and an outer cladding arranged sequentially from inside to outside. The first cladding layer covers the core, and has a relative refractive index difference of ?0.70% to ?0.30% and a radius of 4.5-7.5 ?m. The second cladding layer covers the first cladding layer, and has a relative refractive index difference of ?0.20% to ?0.25% and a radius of 7.0-12.0 ?m. The third cladding layer covers the second cladding layer, and has a relative refractive index difference of ?0.60% to 0.00% and a radius of 10.0-20.0 ?m. The outer cladding covers the third cladding layer, and is a layer made of pure silicon dioxide glass.

Abstract: In one embodiment a vaccine composition comprises two or three AChR subunit constructs and an adjuvant. In some embodiments the AChR subunit construct is an AChR ?1 subunit construct, an AChR ?1 subunit construct, an AChR ? subunit construct, an AChR ? subunit construct, or an AChR ? subunit construct. In another embodiment, the invention provides a method of treating myasthenia gravis in a patient in need thereof, comprising administering a vaccine composition comprising one or more acetylcholine receptor subunit constructs selected from the group consisting of AChR ?1 subunit, AChR ?1 subunit, AChR ? subunit, AChR ? subunit, AChR ? subunit, a fragment thereof, and a combination thereof, and an adjuvant.

Abstract: Provided are a method, an apparatus and a device for activating a vehicle. The method includes: acquiring at least one set of operations for a password input key of the vehicle; acquiring an activation password of the vehicle according to the at least one set of operations; and activating the vehicle according to the activation password; wherein the activation password includes at least one character, and each character of the at least one character is acquired according to the number of operations and/or an operation duration of each set of the at least one set of operations.

Abstract: The application relates to a preparation method of liquid bio-fermented feed, liquid bio-fermented feed and bio-fermented emulsion liquid feed, belonging to the technical field of feed preparation. The preparation method of the present application may overcome physiological problems of weaned piglets such as insufficient gastric acid secretion, low content and activity of digestive enzymes, incomplete development of immune system, disorder of intestinal microecosystem, and the like. The prepared bio-fermented liquid feed has good palatability and high nutrition, easy digestion, low acidity, and is a liquid feed similar to breast milk, which can both effectively alleviate the weaning stress syndrome of piglets, and effect a seamless transition from breast milk to conventional solid feed.

Abstract: A connector for electrically connecting to a conductor comprises a pair of conductive terminals, each including a U-shaped fixing portion and an elastic contact arm extending from the U-shaped fixing portion. The connector further includes a pair of pressing members, each having a U-shaped holding portion and an elastic support arm extending from the U-shaped holding portion. Each of the pressing members is fit within the U-shaped fixing portion of the respective conductive terminal by the U-shaped holding portion, and at least a portion of the elastic support arm is abutted against the elastic contact arm.