Abstract: A bioculture meat device includes a culture medium conditioning tank (1), a cell proliferation tank (2), a muscle separating tank (3), a compression forming device (4), and a control system. The control system is divided into a culture medium regulation and control system (51) for controlling the culture medium conditioning tank (1), a cell proliferation control system (52) for controlling the cell proliferation tank (2), and a muscle collecting and shaping control system (53) for controlling the muscle separating tank (3) and the compression forming device (4). Different from traditional manual production, the device controls a culture environment through automatic equipment, realizes automatic integration from culturing to processing a finished product, improves the production capacity, and reduces the cost.

Abstract: The present disclosure provides a special culture apparatus for a 3D biological tissue, and a method for preparing block-shaped cultured meat. The special culture apparatus for a 3D biological tissue includes: a 3D biological tissue culture tank for accommodating a 3D biological tissue, and a liquid storage tank for containing a culture medium; the 3D biological tissue culture tank is connected to the liquid storage tank by means of a pipeline to form a circuit for the culture medium to circularly flow; and an opening of the 3D biological tissue culture tank is provided with a sealing plug, an inner side of the sealing plug is provided with a plurality of culture medium infusion needles that penetrate the 3D biological tissue when in use.

Abstract: The present disclosure provides a method and device for switching an NFC card. The method can include determining a non-smart NFC card from a card set that includes smart NFC cards that are activated by default. The method can further include performing an activation operation on the non-smart NFC card, and calling the non-smart NFC card on which the activation operation has been completed to perform near-field communication interaction with a card reading device in a case of receiving response information of activation success, where the response information of activation success indicates that the non-smart NFC card and the smart NFC cards do not conflict. Through the technical solution of the present disclosure, the near-field communication interaction efficiency based on the NFC card can be improved.

Abstract: The present disclosure provides a method and device for switching an NFC card. The method can include determining a non-smart NFC card from a card set that includes smart NFC cards that are activated by default. The method can further include performing an activation operation on the non-smart NFC card, and calling the non-smart NFC card on which the activation operation has been completed to perform near-field communication interaction with a card reading device in a case of receiving response information of activation success, where the response information of activation success indicates that the non-smart NFC card and the smart NFC cards do not conflict. Through the technical solution of the present disclosure, the near-field communication interaction efficiency based on the NFC card can be improved.

Abstract: A predictive dead time generating circuit includes a dead time detecting module configured to detect a dead time between the switching off of the upper power transistor and the switching on of the lower power transistor, and a dead time between the switching off of the lower power transistor and the switching on of the upper power transistor, and to generate a first detecting signal and a second detecting signal according to the condition of whether the detected dead time reaches an optimal value. The logic control module changes the output of the delay module according to the judgment result of the dead time detecting module, so as to change the dead time between the driving signal of the upper power transistor and the driving signal of the lower power transistor.

Abstract: A nuclear core component hold-down assembly includes a hollow spring guide in which an instrumentation insertion channel is formed; a base plate which has a center hole formed through a center thereof, and several water flow holes formed around the center hole; a lower end of the spring guide connecting and mating with an upper end of the base plate, the instrumentation insertion channel communicating with the center hole, and the base plate locating above the adapter plate and pressing against it directly; a hold-down bar slidably mounted on an upper end of the spring guide and locating above the base plate; and a spring element configured between the hold-down bar and the base plate, by which the hold-down bar pushes the base plate to cause the base plate to press against the adapter plate. The structure is stable and reliable.