An electromagnetic wave shielding layer can be provided on the backside of a semiconductor element that is flip-chip connected to an adherend, and a semiconductor device having the electromagnetic wave shielding layer can be manufactured without deteriorating productivity. In the kimchi refrigerator, an air separation panel is mounted to a lower surface of the door which together with a depression under the door’s lower surface defines an air storage chamber. Information associated with received signals, such as an indication of their signal strength, can be relayed to a central location for assessing whether the mobile unit should be assigned to another base station, and implement reassignment of one or more mobile units based on such assessment. Some embodiments allow diversion of fluids out of a tree to a subsea processing apparatus followed by the return of at least some of these fluids to the tree for recovery. The fluid-permeable material can allow fluid to communicate between the patient’s tooth and the vicinity of the outer surface.