A technique enabling to improve element isolation characteristic of a semiconductor device is provided. The furnace insulation is characterized in that the inner part of the cylinder includes one or more radially extending or generally radially extending openings. The nMOS-configured power source circuit includes a current generating nMOSFET, and generates a first current having temperature characteristics of an output current dependent on an electron mobility. The controller also determines a relative roll angle from the roll rate signal and the lateral acceleration signal. The zirconia sol has a transmittance more than 70% when the amount of the zirconia crystals in the zirconia sol is about 20 wt %. The elongate hinge reinforcement member is retained within a jamb longitudinal channel formed by the elongate frame jamb.