Abstract: A droplet delivery device includes a droplets outlet coupled to a one-piece and removable container assembly, wherein the container assembly includes a mesh and a membrane, and wherein the mesh includes a plurality of openings formed through the mesh's thickness, a reservoir in fluid communication with the container assembly and configured to supply a volume of fluid, and a vibrating member coupled to a power source and positioned to cooperate with the membrane and mesh to generate an ejected stream of droplets through the mesh.

Abstract: Disclosed are a method, an apparatus, a device, and a medium for image recognition via wireless federated learning. The method for image recognition via wireless federated learning includes: obtaining an image to be recognized and an initial image recognition model; adjusting parameters for the initial image recognition model via a preset accelerated mobile federated learning algorithm according to a target momentum factor to obtain a target image recognition model; and recognizing the image to be recognized through the target image recognition model to obtain text information corresponding to the image to be recognized.

Abstract: Provided are a recombinant expression vector for whooping cough antigens, an engineered bacterium and use thereof. The recombinant expression vector for whooping cough antigens comprises a protein expression cassette for pertactin, a gene for resistance screening, and an upstream recombinant nucleic acid fragment and a downstream recombinant nucleic acid fragment of filamentous haemagglutinin gene, wherein the protein expression cassette for pertactin is located between the upstream recombinant nucleic acid fragment and the downstream recombinant nucleic acid fragment of the filamentous haemagglutinin gene, and the upstream recombinant nucleic acid fragment and the downstream recombinant nucleic acid fragment of the filamentous haemagglutinin gene can undergo homologous recombination with the upstream and downstream of the filamentous haemagglutinin gene, respectively.

Abstract: A battery protection bottom plate, a composite protection structure for a battery pack, and a vehicle. The battery protection bottom plate comprises an upper fiber reinforced resin layer, a metal plate, a fiber reinforced resin frame, and a lower fiber reinforced resin layer; the metal plate and the fiber reinforced resin frame are located between the upper fiber reinforced resin layer and the lower fiber reinforced resin layer; the metal plate is located inside the fiber reinforced resin frame; the top surface of the fiber reinforced resin frame is integrally connected to the upper fiber reinforced resin layer; the bottom surface of the fiber reinforced resin frame is integrally connected to the lower fiber reinforced resin layer.

Abstract: The present provides a visual positioning method and system based on a Gaussian process and a storage medium. The method includes: collecting image of surrounding environment and moving trajectory points while traveling (S100); extracting global features and semantic features from images (S200); processing the extracted global features and semantic features and the moving trajectory points according to a preset processing rule to obtain a Gaussian process observation model (S300); and reconstructing a Bayes filtering framework according to the Gaussian process observation model, endowing a current trajectory with an initial position point, and generating a next position point of the current trajectory, the next position point being used for providing a positioning guidance for navigation (S400). An association between a current state and a historical state can be established, so that the accuracy of a predicted next position point is improved, and accurate navigation can be provided for a robot motion.

Abstract: An edge beam for a battery tray, a battery tray, a battery pack, and a vehicle are provided. The edge beam includes an edge beam body. The edge beam body defines a cavity. The edge beam body has a partition portion. The partition portion is located in the cavity. The partition portion is connected between a top wall and a bottom wall of the cavity to partition the cavity into multiple sub-cavities. The multiple sub-cavities are arranged in sequence in a width direction of the edge beam. In a direction from an upper end to a lower end of the edge beam, the partition portion inclines away from the placement groove.

Abstract: A battery tray, a battery pack, and a vehicle are provided. The battery tray includes a tray bottom plate and a frame. The tray bottom plate includes a bottom plate body. The bottom plate body defines a placing slot configured to place a battery core. A bottom wall of the placing slot is provided with a pressed area configured to support the battery core. The bottom plate body is mounted at the frame. The frame has a support portion. The support portion is configured to support the bottom plate body. An orthographic projection of the support portion and an orthographic projection of the pressed area overlap in a height direction of the battery tray.

Abstract: Embodiments of the present disclosure provide a bottom tray plate for a battery, a battery tray, a battery pack, and a vehicle. The bottom tray plate includes a main body portion and a turnup portion. The main body portion includes a bottom wall and a side wall. The side wall is arranged around the bottom wall. The side wall and the bottom wall jointly define an accommodation cavity. The accommodation cavity is configured to accommodate a battery. A thickness of the bottom wall is t1, and 1 mm?t1?3 mm. The turnup portion is arranged at an edge of the side wall and arranged around the side wall. A thickness of the turnup portion is t2, and t2>t1.

Abstract: The present disclosure discloses a battery pack and a vehicle. The battery pack includes: a battery core; a tray bottom plate, where the tray bottom plate has a pressed area, and the pressed area has an electrode core pressing area; and a side beam, having a side beam body with a supporting portion. In a first direction of the side beam, an orthographic projection of the supporting portion and an orthographic projection of the electrode core pressing area have an overlapping area. In a second direction of the side beam, the orthographic projection of the supporting portion and the orthographic projection of the electrode core pressing area have an overlapping length of M1, and M1 meets the relation formula: 9 mm?M1.

Abstract: A battery tray assembly includes a tray and an electrically conductive member disposed in the tray. The tray includes a mounting space configured to accommodate a battery assembly, and is electrically isolated from the battery assembly. At least a portion of the electrically conductive member is located in the mounting space. One end of the electrically conductive member is connected to a potential point. When no electrically conductive medium is disposed in the mounting space, the electrically conductive member is configured to provide a first potential signal between the battery assembly and the potential point. When the electrically conductive medium is disposed in the mounting space, the electrically conductive member connects the battery assembly to the potential point through the electrically conductive medium, to provide a second potential signal between the battery assembly and the potential point.

Abstract: A side beam for a battery tray is provided. The battery tray has an accommodating groove for accommodating a battery core. The side beam includes a first body and a second body. The first body includes a main portion and a supporting portion, and the supporting portion is connected to the main portion and is configured to support the battery core. The second body is fixed to the first body. The second body and the first body are separated workpieces. At least a part of the second body is located on a side of the supporting portion away from the accommodating groove.

Abstract: The present disclosure discloses an edge beam for a battery tray, a battery tray, a battery pack and a vehicle. The edge beam includes: an edge beam body. The edge beam body defines a cavity, and the edge beam body has a partition portion. The partition portion is located in the cavity, and the partition portion is connected between a top wall and a bottom wall of the cavity to divide the cavity into a first sub-cavity and a second sub-cavity. The first sub-cavity and the second sub-cavity are arranged in a first direction of the edge beam in sequence. The first sub-cavity has a cross-sectional area of S1, the second sub-cavity has a cross-sectional area of S2, and S1 and S2 meet the relation formula: 0.8<S1/S2<1.

Abstract: A droplet delivery device includes a housing with a mouthpiece port or outlet from a nasal device for releasing fluid droplets, a fluid reservoir, and an ejector bracket having a membrane positioned between a mesh with a plurality of openings and a vibrating member that is coupled to an electronic transducer, such as an ultrasonic transducer. The transducer vibrates the vibrating member which causes the membrane to push fluid supplied by the reservoir through the mesh to generate droplets in an ejected stream released through the outlet.

Abstract: Provided is a GII.4 norovirus virus-like particle or active fragment thereof, and use thereof, the virus-like particle comprising or being composed of an amino acid sequence shown as SEQ ID NO: 4. Further, provided is a composition or a kit comprising the GII.4 norovirus virus-like particle, and use thereof. The objective of covering multiple genotypes is achieved by using a single antigen of the invention, the process difficulty of the preparation for a pharmaceutical composition or a vaccine can be reduced, and the production cost is decreased. Also, provided is a norovirus immune composition or a kit comprising GII.2, GII.4, GII.6, and GII.17 norovirus virus-like particles or active fragments thereof, and use thereof.

Abstract: A droplet delivery device includes an ejector plate having an overall area that includes an outer area that is solid without holes and inner, active area with holes.

Abstract: A droplet delivery device includes a housing with a mouthpiece port or outlet from a nasal device for releasing fluid droplets, a fluid reservoir, and an ejector bracket having a membrane positioned between a mesh with a plurality of openings and a vibrating member that is coupled to an electronic transducer, such as an ultrasonic transducer. The transducer vibrates the vibrating member which causes the membrane to push fluid supplied by the reservoir through the mesh to generate droplets in an ejected stream released through the outlet.

Abstract: A pharmaceutical composition comprising: i) a herpes gE protein, an active fragment of the protein, a variant of the protein, or a mixture of at least two of them; ii) an immunostimulatory composition comprising a saponin and a CpG oligodeoxynucleotide, or consisting of an adjuvant comprising a saponin and a CpG oligodeoxynucleotide. Use of the pharmaceutical composition in the preparation of a medicament for preventing and/or treating a varicella-zoster virus infection and/or a varicella-zoster virus mediated disease. The pharmaceutical composition achieves an unexpected technical effect and can mediate a stronger immune response.

Abstract: The present invention belongs to the field of biopharmaceutics and in particular relates to a pharmaceutical composition. The pharmaceutical composition comprises a hepatitis B surface antigen, a hepatitis B core antigen, and an immunostimulatory composition, wherein the immunostimulatory composition comprises a saponin and a CpG oligodeoxynucleotide, or consists of an adjuvant comprising a saponin and a CpG oligodeoxynucleotide.

Abstract: Provided is an immunostimulatory composition, comprising a saponin and a CpG oligodeoxynucleotide, or consisting of an adjuvant comprising a saponin and a CpG oligodeoxynucleotide, wherein the sequence of the CpG oligodeoxynucleotide has two or more copies of 5?-TTCGTT-3? motif or 5?-TCGTCGTCG-3? motif. Also provided is use of the immunostimulatory composition in the preparation of a medication for treating diseases.