Circulation of blood in an ischemic region can be improved or promoted, and furthermore ischemic disease in a living organism can be prevented, improved or cured through either direct contact of, or contact through clothing of carbon dioxide gas with the skin or mucous membrane of the living organism. The resulting composite has continuous ligaments of metal throughout a continuous region of superconducting ceramic oxide. Upon reception of a control command from a remote control, the window associated with the remote control is selected, and the control command is applied to the selected window. A seal ring is located between the horizontal flange of the second race and the support ring.