Abstract: Provided is a gene for efficiently expressing hyaluronic acid hydrolase. A nucleotide sequence of the gene is represented by SEQ ID NO: 4. By truncating a segment of a signal peptide sequence at the N-terminus of a full-length hyaluronic acid hydrolase gene, the Pichia pastoris engineering strain of high level expression genetic engineering hyaluronic acid hydrolase is constructed. The enzyme activity of the hyaluronic acid hydrolase in a fermentation broth obtained by high-density fermentation using the constructed Pichia pastoris engineering strain is up to 4.7×105 U/mL.

Abstract: A new ring coupling structure for a linear accelerator includes an acceleration cavity, a coupling cavity, and a beam hole. The acceleration cavity and the coupling cavity are alternately assembled together. The beam hole penetrates through the acceleration cavity and the coupling cavity. The acceleration cavity adopts a bowl-shaped structure, a convex cone structure with a mesoporous is disposed on an inner wall of the acceleration cavity along the beam hole. Coupling holes between the acceleration cavity and the coupling cavity are designed as at least two waist-shaped holes uniformly distributed around the beam hole. The coupling cavity adopts a disc-shaped cavity structure with a thickened edge, and a nose cone is disposed in the coupling cavity and welded with cavity walls at both ends of a coupler. The left and right waveguide plates of the coupling cavity are welded together by using the nose cone.

Abstract: A black-box fuzzing testing method includes: generating a plurality of testcases; executing a target program based on each of the generated testcases to obtain a plurality of execution results; determining a plurality of execution paths of the target program using the execution results; and determining a code coverage of the target program from the execution paths.

Abstract: A method and a system for controlling battery swapping of a vehicle and a vehicle are provided. The method includes: receiving, by a vehicle control unit (VCU), a battery swapping instruction, and transmitting the battery swapping instruction to a battery manager when the vehicle is in a high-voltage power-on state; transmitting, by the battery manager, an enable instruction to a direct current (DC) charger assembly in response to the received battery swapping instruction; and performing, by the DC charger assembly, a starting operation in response to the enable instruction, so as to provide a power supply voltage to a vehicle load after an electrical connection between a power battery pack and a high-voltage circuit of the vehicle is cut off during battery swapping of the vehicle.

Abstract: A user equipment (UE) may attempt to access an edge data network. The UE generates a first credential based on a second credential that was generated for a procedure between the UE and a network. The UE then generates an identifier corresponding to the first credential and generates a message authentication code based on the first credential and a count, wherein the count is associated with an identifier of an edge network client running on the UE. The UE then transmits an application registration request, message to a server associated with an edge data network, the application registration request message including the count, the message authentication code, the identifier corresponding to the first credential, and a public land mobile network identifier (PLMN ID) of the network. The UE then receives an authentication accept message or an authentication reject message from the server associated with the edge data network.

Abstract: The present application relates to the technical field of computers, and discloses a method and apparatus for generating a music file, and an electronic device and a storage medium. The method for generating a music file comprises: obtaining a first image; performing feature extraction on the first image to obtain a salient feature of the first image; mapping the salient feature to a musical instrument digital interface (MIDI) information coordinate system on the basis of the position of the salient feature in the first image, so as to determine MIDI information corresponding to the salient feature, the MIDI information coordinate system being used for indicating a correspondence between MIDI information and time; and generating a music file on the basis of the correspondence between the MIDI information and the time.

Abstract: Provided are methods for modulating a SRC-1 condensate to regulate transcription of one or more genes, methods of treating diseases and conditions using SRC-1 inhibitors, and methods for screening of agents that modulate SRC-1 condensate.

Abstract: Provided are a GLP-1 receptor agonist compound and a composition and use thereof. The compound can be used for treating or preventing GLP-1 receptor-mediated diseases or disorders and related diseases or disorders.

Abstract: Provided are a continuous post-treatment method and device for a penem compound. The method includes the following steps: S1, performing continuous extraction on a reaction crude product of a penem compound, to obtain an extraction heavy phase and an extraction light phase; S2, performing continuous solid-liquid separation on the extraction heavy phase, to obtain a liquid phase separation product; S3, performing continuous pH adjustment on the liquid phase separation product until a pH value thereof is 6.1-6.3, to obtain pH-adjusted solution; and S4, performing continuous crystallization treatment on the pH-adjusted solution by a first crystallization solvent, to obtain a penem compound product. The use of the method for the post-treatment of the reaction crude product of the penem compound has the advantages of high treatment speed and high efficiency, and stable material properties and a low deterioration rate during the treatment, and has better control over the yield and purity of a target product.

Abstract: A gas extraction device for metal mineral inclusions and a gas extraction method therefor are provided, the device includes a base plate, an annular carrier, sealing covers, a grinding assembly, a vacuum assembly, a gas-gathering assembly and a mass spectrometer. The annular carrier is disposed on the base plate, multiple grinding chambers are defined and evenly distributed in a circular shape on the annular carrier, the sealing covers are disposed at openings of the grinding chambers, the grinding assembly includes grinding hammers, and the grinding hammers penetrate through the sealing covers and extend into the grinding chambers. Side walls of each grinding chamber defines a first through hole and a second through hole. The vacuum assembly is communicated with the grinding chambers through the first through holes. The gas-gathering assembly is communicated with the grinding chambers through the second through holes. The mass spectrometer is communicated with the gas-gathering assembly.

Abstract: The present disclosure provides a video processing method, including: determining, according to a consulting message, a target short video corresponding to the consulting message; and pushing the target short video to a terminal sending the consulting message. The present disclosure further provides a live streaming processing method, an electronic apparatus, a live streaming system, a terminal, and a computer-readable storage medium. The video processing method can improve the user experience during a live streaming process.

Abstract: A method for controlling battery swapping of a vehicle is provided. The vehicle induces a vehicle control unit (VCU), a bidirectional DC-DC converter assembly, a vehicle load, a battery controller, a power battery pack, and a storage battery. The method includes: receiving, by the VCU, a battery swapping instruction when the vehicle is in the high-voltage power-on state; transmitting, by the VCU, a switching instruction to the bidirectional DC-DC converter assembly in response to the battery swapping instruction; and disabling, by the bidirectional DC-DC converter assembly, the buck mode in response to the switching instruction to cut off electrical connection between the power battery pack and a high-voltage circuit of the vehicle by a battery controller, and enabling the boost mode in response to the switching instruction to supply power to the vehicle load by the storage battery through the bidirectional DC-DC converter assembly.

Abstract: A SiC ohmic contact preparation method is provided and includes: selecting a SiC substrate; preparing a graphene/SiC structure by forming a graphene on a Si-face of the SiC substrate; depositing an Au film on the graphene of the graphene/SiC structure; forming a first transfer electrode pattern on the Au film by a first photolithography; etching the Au film uncovered by the first transfer electrode pattern through a wet etching; etching the graphene uncovered by the Au film through a plasma etching after the wet etching; forming a second transfer electrode pattern on the SiC substrate by a second photolithography; depositing an Au material on the Au film exposed by the second transfer electrode pattern and forming an Au electrode and then annealing. The graphene reduces potential barrier associated with the SiC interface, specific contact resistance of ohmic contact reaches the order of 10?7˜10?8 ?·cm2, and the method has high repeatability.

Abstract: Techniques are described to enable a user equipment (UE) to save power consumption and/or can enable the UE to acquire the channel state in time without reducing the UE's data transmission efficiency. An example technique includes determining, by the communication device, an operating mode based on a first signaling, and operating the communication device in the operating mode, where the operating mode includes any one of a normal mode, a first power saving mode, a second power saving mode, a third power saving mode, or a fourth power saving mode.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may communicate with multiple transmit receive points (TRPs) in a frame based equipment mode. A wireless node (e.g., the UE and/or one or more of the multiple TRPs) may determine, among the UE and the multiple TRPs, an initiating node that acquired a current channel occupancy time. The wireless node may determine a transmission pattern that includes one or more idle periods based at least in part on a fixed frame period structure associated with the initiating node that acquired the current channel occupancy time. The wireless node may refrain from transmitting during the one or more idle periods, wherein the one or more idle periods include at least an idle period associated with the wireless node. Numerous other aspects are described.

Abstract: A method for controlling automatic battery swapping of a rail vehicle, includes: receiving vehicle information sent by the rail vehicle; determining whether the rail vehicle has a battery swapping need based on the vehicle information of the rail vehicle; in response to determining that the rail vehicle has the battery swapping need, determining a target battery swapping station according to the battery swapping need; and sending a battery swapping notification signal and a vehicle control signal to the rail vehicle, and sending a battery swapping request signal to the target battery swapping station, where the battery swapping notification signal includes position information of the target battery swapping station, the vehicle control signal controls the rail vehicle to travel to the target battery swapping station, and the battery swapping request signal includes identification information of the rail vehicle and requests the target battery swapping station to swap a battery pack for the rail vehicle.

Abstract: A portable lighting device includes a housing, a light source supported by the housing, and an alkaline battery positioned within the housing and coupled to the light source. The alkaline battery is configured to provide a drive current to the light source, and an intensity of the light source is dependent on the drive current. The portable lighting device also includes an electronic processor positioned within the housing and coupled to the light source and the alkaline battery. The electronic processor is configured to monitor a voltage of the alkaline battery, and execute a ramp-up algorithm to control the drive current based on the voltage of the alkaline battery.

Abstract: A splicing adhesive film, a manufacturing method thereof, and a photovoltaic module are provided. The splicing adhesive film includes a first portion and a plurality of second portions. The first portion includes a first material, and each second portion includes a second material. The first portion is located in the central region, and the plurality of second portions each are at least partially located in the edge region. The first portion and each second portion are at least partially overlapped in the first direction. The maximum thickness of each second portion located in the edge region is P, and the maximum thickness of the first portion located in the central region is Q, P>Q.

Abstract: The present disclosure discloses a thermal plasma treatment method for sulfur hexafluoride (SF6) degradation. In the thermal plasma treatment method for SF6 degradation, Ar is input into a thermal plasma generator as a carrier gas; annular electrodes are electrically connected to a direct current power supply to generate an arc plasma region in the presence of the carrier gas Ar; to-be-reacted SF6 and to-be-reacted H2 in a predetermined ratio are input into the arc plasma region to generate hydrogen radicals as well as fluorine radicals, and the hydrogen radicals and the fluorine radicals are bonded with each other to generate HF to inhibit the self-recovery reaction of SF6; and final products include HF and elemental S.

Abstract: A computer-implemented method of automated design for a vibration-based energy harvesting system for a host structure includes receiving acceleration signals obtained from one or more accelerometers attached to the host structure, determining dominating acceleration frequencies of the host structure from the received acceleration signals, determining a degree-of-freedom number of a cantilever beam based on the number of dominating acceleration frequencies of the host structure, simulating vibration of the cantilever beam across a plurality of parameters, determining values of the plurality of parameters that result in a match between resonant frequencies of the cantilever beam and the dominating acceleration frequencies of the host structure, and outputting a proposed design of the cantilever beam including the values of the plurality of parameters.