An integrated circuit device comprising a memory cell including a punch-through mode transistor, wherein the transistor includes a source region, a drain region, a gate, a gate insulator, and a body region having a storage node which is located, at least in part, immediately beneath the gate insulator. In one embodiment, a tissue ablation apparatus includes a flexible elongate body having proximal and distal ends. In the method, at first, a plurality of training data are provided, wherein the training data includes a plurality of history sound feature values of the motor and history torque values or history rotation values corresponding thereto. is formed into a bend mother pipe, which is then heated to 900-1100\xb0 C. The cross sectional flow area of the first adsorption chamber may be smaller than the cross sectional flow area of the second adsorption chamber.