Abstract: This application provides a dispersant composite, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. In particular, this application provides a dispersant composite including a dispersant and a wetting agent. The dispersant composite of this application can alleviate the problems of poor dispersion of positive electrode active material powder and high slurry viscosity during preparation of a positive electrode slurry, and further, can improve flexibility of the positive electrode plate.

Abstract: An antibody against a novel coronavirus, and a reagent and a kit for detecting the novel coronavirus, which relate to the technical field of antibodies. The antibody against the novel coronavirus includes a heavy chain complementarity determinant region and a light chain complementarity determinant region. The antibody has good affinity for N protein of the novel coronavirus, and has good sensitivity and specificity for detecting the novel coronavirus. Antibody options are provided for detection of the novel coronavirus.

Abstract: The present invention provides an isolated binding protein comprising a cTnI antigen binding domain. The antigen binding domain comprises at least one complementarity determining region selected from amino acid sequences defined herein, or has sequence identity of at least 80% to the complementarity determining region of said amino acid sequence and an affinity of KD?1.41×10?9 mol/L to cTnI. The binding protein can be used for detection of cTnI protein.

Abstract: A mechanical-hydraulic integrated releasing device includes an upper joint, a lower joint and a pawl. The upper joint and the lower joint are respectively connected to two ends of the pawl. An outer side of the pawl is sleeved with a releasing sleeve capable of moving in an axial direction of the pawl. A step is arranged on an outer wall of a ratchet of the pawl. A groove matching the step is arranged on an inner wall of the releasing sleeve, and the step and the groove cooperate to limit the pawl. A releasing sleeve upper portion is arranged between the releasing sleeve and the upper joint, one end of the releasing sleeve upper portion is inserted into the releasing sleeve, and the other end is sleeved on an outer portion of the upper joint and connected to the upper joint via a start pin.

Abstract: A mechanical-hydraulic integrated releasing device includes an upper joint, a lower joint and a pawl. The upper joint and the lower joint are respectively connected to two ends of the pawl. An outer side of the pawl is sleeved with a releasing sleeve capable of moving in an axial direction of the pawl. A step is arranged on an outer wall of a ratchet of the pawl. A groove matching the step is arranged on an inner wall of the releasing sleeve, and the step and the groove cooperate to limit the pawl. A releasing sleeve upper portion is arranged between the releasing sleeve and the upper joint, one end of the releasing sleeve upper portion is inserted into the releasing sleeve, and the other end is sleeved on an outer portion of the upper joint and connected to the upper joint via a start pin.