Abstract: A flue gas mixing apparatus includes gas mixers, wherein the gas mixers have a gas flow channel, one of parallel two faces of a cuboid space being set as a gas flow-in face, the other thereof being set as a gas flow-out face, and in the gas flow channel, each of the gas flow-in face and the gas flow-out face is segmented into at least four regions which have same symmetric areas by straight lines passing through a center of each face, and a gas flow channel partition plate which introduces the combustion flue gas caused to flow in each of the regions of the gas flow-in face into each of the regions of the gas flow-out face at positions at which the regions are shifted one-by-one around a line segment connecting the centers of the gas flow-in face and the gas flow-out face is included.

Abstract: A flue gas mixing apparatus includes gas mixers, wherein the gas mixers have a gas flow channel, one of parallel two faces of a cuboid space being set as a gas flow-in face, the other thereof being set as a gas flow-out face, and in the gas flow channel, each of the gas flow-in face and the gas flow-out face is segmented into at least four regions which have same symmetric areas by straight lines passing through a center of each face, and a gas flow channel partition plate which introduces the combustion flue gas caused to flow in each of the regions of the gas flow-in face into each of the regions of the gas flow-out face at positions at which the regions are shifted one-by-one around a line segment connecting the centers of the gas flow-in face and the gas flow-out face is included.

Abstract: A semiconductor output circuit, an external output signal generation method and a semiconductor device that suppress variation in an external output signal caused by a decrease in power supply voltage. An output section changes electric potential of an external output signal EB according to a change in electric potential of an internal input signal A from ground to VDD or from VDD to the ground. A differential section outputs an output signal corresponding to the external output signal EB and a predetermined reference signal VREF. The differential section functions as a voltage follower so that the electric potential of the external output signal EB will correspond to the predetermined reference signal VREF. As a result, variation in output voltage VOL at a low voltage side of the external output signal EB is suppressed.

Abstract: A differential output circuit comprising: a first power supply line; a constant current source that includes a current input terminal coupled to the first power supply line; an output common mode voltage setting unit that includes a variable resistor element, one end of the variable resistor element being coupled to a current output terminal of the constant current source; and a signal transmission unit that includes a first power supply terminal and a second power supply terminal, the first power supply terminal being coupled to the other end of the variable resistor element, and the second power supply terminal being coupled to a second power supply line which supplies a voltage lower than a voltage of the first power supply line.

Abstract: A semiconductor output circuit, an external output signal generation method and a semiconductor device that suppress variation in an external output signal caused by a decrease in power supply voltage. An output section changes electric potential of an external output signal EB according to a change in electric potential of an internal input signal A from ground to VDD or from VDD to the ground. A differential section outputs an output signal corresponding to the external output signal EB and a predetermined reference signal VREF. The differential section functions as a voltage follower so that the electric potential of the external output signal EB will correspond to the predetermined reference signal VREF. As a result, variation in output voltage VOL at a low voltage side of the external output signal EB is suppressed.

Abstract: A catalyst unit is constructed by alternately stacking rectangular catalyst elements (1) formed by cutting catalyst support plates coated with a catalytic material and having ribs (2) inclined at 45.degree. to one specified side edge (1a) of each thereof, and those turned upside down in a case, and the catalyst unit is disposed in a gas passage with the ribs (2) of the catalyst elements (1) inclined at an angle greater than 0.degree. and smaller than 90.degree. to the direction of the gas flow (6). When the catalyst unit comprising the catalyst elements (1) coated with a denitrating catalyst is placed in the gas passage, the ribs (2) of the catalyst elements (1) blocks the gas flow (6) and generate turbulent currents on the downstream side thereof to promote the contact of ammonia and NOx contained in the exhaust gas with the catalyst.

Abstract: A catalyst unit is constructed by alternately stacking rectangular catalyst elements (1) formed by cutting catalyst support plates coated with a catalytic material and having ribs (2) inclined at 45.degree. to one specified side edge (1a) of each thereof, and those turned upside down in a case, and the catalyst unit is disposed in a gas passage with the ribs (2) of the catalyst elements (1) inclined at an angle greater than 0.degree. and smaller than 90.degree. to the direction of the gas flow (6). When the catalyst unit comprising the catalyst elements (1) coated with a denitrating catalyst is placed in the gas passage, the ribs (2) of the catalyst elements (1) blocks the gas flow (6) and generate turbulent currents on the downstream side thereof to promote the contact of ammonia and NOx contained in the exhaust gas with the catalyst.