Abstract: The present application provides a sodium-ion battery, a battery module, a battery pack, and an electrical device. The sodium-ion battery includes a positive electrode plate, a negative electrode plate, and a separator; the positive electrode plate includes a positive electrode current collector and a positive electrode active material layer arranged on at least one surface of the positive electrode current collector, the negative electrode plate includes a negative electrode current collector and a negative electrode active material layer arranged on at least one surface of the negative electrode current collector, and the separator is arranged between the positive electrode plate and the negative electrode plate; the positive electrode active material layer has a porosity denoted as ?, the negative electrode active material layer has a porosity denoted as ?, and the separator has a porosity denoted as ?, which satisfy 0?(???)/??1.5, and ???.

Abstract: A secondary battery comprises a positive electrode plate and a negative electrode plate. The positive electrode plate comprises a positive electrode current collector and a positive electrode active layer loaded on the surface of the positive electrode current collector, and the negative electrode plate comprises a negative electrode current collector and a negative electrode active layer loaded on the surface of the negative electrode current collector. The positive electrode active layer has a compacted density of A1 g/cm3 and a porosity of B1, and 1.8?A1/B1?12. The negative electrode active layer has a compacted density of A2 g/cm3 and a porosity of B2, and 1?A2/B2?8.

Abstract: A method and an apparatus for detecting key points of a human body, and a storage medium are provided. The method includes: extracting, in response to detecting that an image comprises a body, two-dimensional (2D) coordinate data for identifying body keypoint positions in the image to obtain 2D pose data; and performing body keypoint feature fusion on the 2D pose data and depth data corresponding to the body keypoint positions to obtain three-dimensional (3D) pose data for identifying the body keypoint positions.

Abstract: A method and an apparatus for detecting key points of a human body, and a storage medium are provided. The method includes: extracting, in response to detecting that an image comprises a body, two-dimensional (2D) coordinate data for identifying body keypoint positions in the image to obtain 2D pose data; and performing body keypoint feature fusion on the 2D pose data and depth data corresponding to the body keypoint positions to obtain three-dimensional (3D) pose data for identifying the body keypoint positions.

Abstract: The present invention provides a pharmaceutical composition comprising a CD40 antibody or an antigen-binding fragment thereof and an acetic acid-sodium acetate buffer solution, and a use thereof. The pharmaceutical composition may further contain sugar, a non-ionic surfactant, and other excipients. The pharmaceutical composition of the present invention shows good antibody stability.

Abstract: A method and an apparatus for detecting key points of a human body, and a storage medium are provided. The method includes: extracting, in response to detecting that an image comprises a body, two-dimensional (2D) coordinate data for identifying body keypoint positions in the image to obtain 2D pose data; and performing body keypoint feature fusion on the 2D pose data and depth data corresponding to the body keypoint positions to obtain three-dimensional (3D) pose data for identifying the body keypoint positions.