Abstract: The present application provides a positive electrode and a lithium-ion battery. The positive electrode comprises a current collector; a first active material layer comprising a first active material; and a second active material layer; wherein the first active material layer is arranged between the current collector and the second active material layer, the first active material layer comprises a first active material, and the first active material is at least one selected from a group consisting of a modified lithium transition metal oxide positive electrode material and a modified lithium iron phosphate. The positive electrode of the present application helps to improve the thermal stability of the lithium-ion battery, and the improvement of the thermal stability may reduce the proportion of the thermal runaway when the lithium-ion battery is internally short-circuited so that the safety performance of the lithium-ion battery is improved.

Abstract: A movable medical device is provided. The movable medical device may include a medical cabin configured to accommodate medical resources for providing multiple types of medical services and a movable platform configured to move the medical cabin to a desired location. The medical cabin may include a radiation room configured to accommodate a radiation device for providing a medical imaging service; a sample processing room configured to accommodate medical resources for providing at least one of a sampling service or a sample detection service; and a control room configured to accommodate a control platform used to control the radiation device for providing the medical imaging service.

Abstract: A cell culture dish, comprising a dish bottom, as well as an inner side wall and an outer side wall integrated with the dish bottom, wherein the inner part enclosed by the inner side wall forms a culture area, and a water tank is formed between the inner side wall and the outer side wall, and the water tank is located on the periphery of the culture area; at least one convex ring is provided on the surface of the dish bottom in the culture area, and the inner part enclosed by the convex ring forms a culture tank, wherein a number of culture microwells are provided at the bottom of at least one culture tank.

Abstract: Provided is a microfluidic chip for physicochemically treating a single cell whose diameter is 50-400 micrometers.

Abstract: The invention discloses a vitrification freezing treatment device for cells. The vitrification freezing treatment device for cells includes a straw device, a pre-freezing device, a freezing unit, a driving device, a control unit and a carrying table used for carrying cell carriers, wherein the straw device is connected with the driving device in a driven mode, the driving device is in signal connection with the control unit, the straw device comprises straws used for obtaining cells in the cell carriers, the control unit is used for controlling the driving device to drive the straw device to obtain cells and to transfer the cells to the freezing unit, and the pre-freezing device is used for pre-freezing the straws when the straw device transfers the obtained cells to the freezing unit.

Abstract: The invention discloses a vitrification freezing treatment device for cells. The vitrification freezing treatment device for cells includes a straw device, a pre-freezing device, a freezing unit, a driving device, a control unit and a carrying table used for carrying cell carriers, wherein the straw device is connected with the driving device in a driven mode, the driving device is in signal connection with the control unit, the straw device comprises straws used for obtaining cells in the cell carriers, the control unit is used for controlling the driving device to drive the straw device to obtain cells and to transfer the cells to the freezing unit, and the pre-freezing device is used for pre-freezing the straws when the straw device transfers the obtained cells to the freezing unit.