A device for purifying a fluid is disclosed. A hot water apparatus is provided with: a primary water circuit in which water heated by absorbing heat from a refrigerant at a heat exchanger circulates; a secondary water circuit connected to the primary water circuit via a heat exchanger, in which water circulates; and a tank connected to the secondary water circuit, in which the water circulating in the secondary water circuit is stored. Second stressed regions having a second type of stress underlie the source and drain regions, in which the second type of stress is an opposite one of the compressive type or tensile type stress of the first stressed region. The top portion and bottom portion may be operable to draw heat away from the network device and release the heat on a second side of the installation surface. The single amplifier sends the multi-nuclei excitation pulses to a RF coil for application to the examination region. The target path is identified from among the plural paths based on the timing information.