Abstract: A magnetic resonance imaging method and system are provided. The method includes obtaining first image data using a first scan sequence, filtering the first image data to generate second image data, and estimating a radio-frequency field map based on the first and second image data. Scanned image data is then acquired using a second scan sequence and corrected using the estimated radio-frequency field map to obtain the corrected image data.

Abstract: The present disclosure relates to the technical field of batteries, and in particular relates to a negative electrode plate and a battery. The negative electrode plate comprises a negative electrode current collector and a negative electrode active coating layer on a surface of at least one side of the negative electrode current collector, wherein the negative electrode active coating layer comprises silicon-based particles; the number of the silicon-based particles in a region of 100 ?m×100 ?m of the surface of the negative electrode active coating layer is a, 1?a?50; the average sphericity of the silicon-based particles is b, 0.66?b?1; and a and b satisfy: 1?a/b?67, thereby the degree of self-discharge of the battery can be reduced and the high-temperature storage performance of the battery can be improved.

Abstract: This application provides an electronic device, a charging method, and a charging system for charging two batteries connected in series. The charging integrated circuit controls, based on a target voltage corresponding to each preset period, a charging mode for charging the two batteries. As a charging process is prolonged, the voltages of the two batteries gradually increase, and the target voltage obtained varies with each period. A turning point of switching from constant current charging to constant voltage charging is determined based on the target voltage, and the target voltage is related to the minimum voltage value of the two batteries in each preset period. The charging mode is adjusted based on the target voltage corresponding to each preset period instead of a fixed target voltage. This reduces a probability of battery overcharging and improves battery charging reliability.

Abstract: Disclosed in the present disclosure is a bidirectional freewheeling circuit for a direct current motor. Two unidirectional freewheeling circuits are connected in parallel between a power supply and the direct current motor, the two unidirectional freewheeling circuits are a unidirectional freewheeling circuit I and a unidirectional freewheeling circuit II in sequence, and the unidirectional freewheeling circuit includes a diode and an equivalent switch connected in series to the diode. Conduction directions of the diodes in the two the unidirectional freewheeling circuits are opposite, when a voltage applied to both ends of the motor satisfies Ua>Ub, the equivalent switch I is turned on, the equivalent switch II is turned off, and when the voltage applied to both ends of the direct current motor satisfies Ua<Ub, the equivalent switch II is turned on, and the equivalent switch I is turned off.

Abstract: Disclosed is a node address configuration method for a multi-node system. The multi-node system includes an address controller connected to one or more nodes. The address controller sends an address configuration command packet to the nodes connected to it, and the address configuration command packet includes a target node address and a target node configuration address. A node parses the address configuration command packet: if the target node address in the address configuration command packet is equal to the address identifier of the node, the node configures its address identifier as the target node configuration address; if the target node address is not equal to the address identifier of the node and the node includes a forwarding table, the node queries the forwarding table using the target node address and sends the address configuration command packet to the connected node through the transmission channel indicated by the forwarding table.

Abstract: Provided in the present application are a method and apparatus for determining the capacity of an energy storage apparatus for a new energy support machine, and a new energy support machine. The method includes: determining the duration of a rotor of a doubly-fed induction generator participating in adjustment; determining a slip ratio of the rotor of the doubly-fed induction generator when same participates in the adjustment; and determining the capacity of an energy storage apparatus according to an active power of a stator of the doubly-fed induction generator participating in the adjustment, the slip ratio of the rotor when same participates in the adjustment, and the duration of the rotor participating in the adjustment. The method is intuitive and has a small calculation amount, and a determined capacity value is larger and more reliable, such that the engineering practicability is higher.

Abstract: The present invention discloses a drying apparatus and method for drying a substrate using supercritical fluid. The drying apparatus comprises an upper chamber, a lower chamber, a substrate tray, a lifting mechanism, a connecting assembly and a locking mechanism. The lower chamber is disposed below the upper chamber. The substrate tray is disposed on the lower chamber and is used for carrying the substrate. The lifting mechanism is disposed below the lower chamber and is used for driving the lower chamber to move in the vertical direction, so that the lower chamber is completely contacted with the upper chamber. The connecting assembly is connected to the upper chamber and the lower chamber. The locking mechanism is used to lock or loosen the connecting assembly when the lower chamber is in full contact with the upper chamber.

Abstract: A windshield for a vehicle and a method for manufacturing the windshield are provided in the disclosure. The windshield includes an outer glass panel, an inner glass panel, and an intermediate adhesive layer. An opaque masking layer is disposed on at least one surface of the windshield. The opaque masking layer includes a dark ceramic-ink layer and an ultraviolet-drying ink layer. The dark ceramic-ink layer has a first no-ink region, the ultraviolet-drying ink layer is located in the first no-ink region, the ultraviolet-drying ink layer has a light transmitting region. According to the disclosure, an optical quality of the light transmitting region can be ensured, a diopter of the light transmitting region is less than or equal to 200 mdpt.

Abstract: Examples of vehicle starting methods, power supplies, and vehicles are described. One example method includes obtaining a voltage of a first battery of a vehicle by an external power supply. When the voltage of the first battery is lower than a first voltage threshold, a second battery of the external power supply is controlled to supply power to the vehicle, to start the vehicle. In this way, whether the first battery has an insufficient voltage may be determined by obtaining the voltage of the first battery of the vehicle, and after it is determined that the first battery has the insufficient voltage, electrical energy for starting the vehicle is provided by the second battery of the external power supply, to start the vehicle.

Abstract: A substrate processing apparatus comprises a processing chamber and a gas supply portion configured in an upper portion of the processing chamber, for supplying the processing gas into the processing chamber. A plurality of substrate holding portions are configured in the processing chamber and located below the gas supply portion, for holding substrates. An exhaust portion is configured in a lower portion of the processing chamber, for exhausting gas from the processing chamber. The exhaust portion comprises a plurality of exhaust grooves, a plurality of exhaust flow channels and a shared main exhaust port. Each exhaust groove is configured with a substrate holding portion and two exhaust flow channels, to connect the exhaust groove to the main exhaust port. Wherein, the main exhaust port is located at a geometric center of a plurality of substrate holding portions, and the plurality of exhaust flow channels have the same exhaust volume.

Abstract: Provided are an identifier assignment method and apparatus for a personal IoT network, and a network side device. The method includes: assigning, by a first network element, a PIN identifier to a target personal IoT network PIN, where the PIN identifier is unique in the first network element; and sending or configuring, by the first network element, the PIN identifier of the target PIN to a second network element.

Abstract: The present disclosure provides an interface system, comprising a master controller, an interface module, a functional module, and a remote I2C slave device; the master controller is connected to the interface module; the interface module is connected to the functional module, and the functional module is connected to the remote I2C slave device. The present disclosure is applicable for long-distance data transmission, with a high data transfer speed.

Abstract: The present disclosure provides an SPI interface system, comprising an SPI interface module and at least one functional module; the SPI interface module is connected to an SPI master controller via an SPI_CK signal line, an SPI_MOSI signal line, and an SPI_MISO signal line; the functional module is connected to the SPI interface module. The present disclosure is suitable for application scenarios with long transmission links and is also compatible with local applications with short transmission links, providing an ideal solution for SPI transmission.

Abstract: The invention relates to an equipment for semiconductor production, in particular to a heat treatment apparatus. The apparatus comprises a cooling unit (200), a heating unit (300) and a transmission unit (400). The cooling unit (200) comprises a cooling plate (210) for cooling a substrate (w), and the heating unit (300) comprises a heating plate (310) for heating the substrate (w). The transmission unit (400) comprises a transmission arm (410), a lifting module and a linear module. The transmission arm (410) supports the substrate (w) and transmits the substrate (w) between the cooling unit (200) and the heating unit (300). The transmission arm (410) is disposed on the lifting module, and the lifting module drives the transmission arm (410) to ascend and descend. The linear module drives the transmission arm (410) to transmit the substrate (w) between the cooling plate (210) and the heating plate (310). The internal space of the apparatus is optimized.

Abstract: The disclosure provides a method and apparatus for relocating a target object, a storage medium, and an electronic apparatus. The method includes: acquiring a first camera pose matrix and a first image during relocating of the target object in a virtual space; calculating a second camera pose matrix according to the first camera pose matrix and the first image; determining a first target pose matrix according to the second camera pose matrix; and updating second pose information of the target object in the virtual space according to the first target pose matrix, where the second pose information is pose information, acquired during last locating, of the target object in the virtual space.

Abstract: A negative electrode active material comprises silicon-carbon composite particles. The silicon-carbon composite particles have a particle size Dn10 of 1 ?m-8 ?m. The silicon-carbon composite particles have an average sphericity of 0.6-1. The silicon-carbon composite particles have closed pores and open pores, with the volume V1 of the closed pores and the volume V2 of the open pores satisfying 0.2?V1/V2?2,000. The negative electrode active material of the present disclosure has good ionic conductivity and electronic conductivity and good structural stability while ensuring a high capacity per gram. The battery comprising the negative electrode active material of the present disclosure can have good initial Coulombic efficiency, rate performance, low-temperature performance and cycling stability at the same time.

Abstract: A negative electrode active material comprises silicon-carbon composite particles. The silicon-carbon composite particles have closed pores, and the volume fraction of the closed pores is 4%-50%. The silicon-carbon composite particles have a core-shell structure with a shell thickness of t, where 0<t?10 nm. The silicon-carbon composite particles have a first region and a second region on a cross section. The content of silicon element in the first region is c1, the content of silicon element in the second region is c2, and 0.15?c2/c1?1.4; where the dimension of the perpendicular line to the tangent line at any point on the edge of the cross section is L on the cross section, and on the perpendicular line, a region 0.001 L-0.1 L away from the edge constitutes the first region, and a region 0.1 L-0.5 L away from the edge constitutes the second region.

Abstract: A video generation method and apparatus, a readable medium, an electronic device and a program product. The method includes: displaying a video editing interface, where a target text is displayed in the video editing interface; displaying a storyboard list based on the target text in response to a storyboard generation operation on the video editing interface, where the storyboard list includes a plurality of storyboard cards, a storyboard picture and a storyboard subtitle obtained by splitting the target text are displayed in each of the storyboard cards; and generating a video based on the storyboard list in response to a video generation operation on the video editing interface.

Abstract: A method for creating a male sterile and maintainer dual-purpose line by knocking out a BnOPR3 gene in Brassica napus, belongs to the technical field of plant genetic engineering. Use of two Brassica napus homologous genes of the BnOPR3 gene in controlling male reproductive development of Brassica napus is provided, where a BnOPR3.A3 gene has a nucleotide sequence set forth in SEQ ID NO: 1, and a protein encoded by same has a sequence set forth in SEQ ID NO: 2; and a BnOPR3.C3 gene has a nucleotide sequence set forth in SEQ ID NO: 3, and a protein encoded by same has a sequence set forth in SEQ ID NO: 4. A method for creating a male sterile and a maintainer dual-purpose line using a BnOPR3 gene in Brassica napus is further provided.