Abstract: Provided is a compound showing excellent Antifungal activity against Trichophyton fungus, which is a major causative microorganism of superficial mycosis, and high effectiveness on diseases caused by Trichophyton fungi. A biaryl derivative represented by the formula (I) or a salt thereof: wherein ring A is an optionally substituted phenyl, or an optionally substituted 5- or 6-membered ring heteroaryl (ring A may be further condensed to form an optionally substituted fused ring); Q is CH2, C?O, NH, O, S or the like; X1, X2 and X3 are CR1 or N; Y is CH or N; Z is CR2b or N; R2a and R2b are each a hydrogen atom, a halogen atom, an optionally substituted C1-C6 alkyl group, a C1-C6 haloalkyl group or the like; R2a and R2b may form, together with carbon atoms bonded thereto, an optionally substituted carbocycle, or an optionally substituted heterocycle.

Abstract: Provided is a compound showing excellent Antifungal activity against Trichophyton fungus, which is a major causative microorganism of superficial mycosis, and high effectiveness on diseases caused by Trichophyton fungi. A biaryl derivative represented by the formula (I) or a salt thereof: wherein ring A is an optionally substituted phenyl, or an optionally substituted 5- or 6-membered ring heteroaryl (ring A may be further condensed to form an optionally substituted fused ring); Q is CH2, C?O, NH, O, S or the like; X1, X2 and X3 are CR1 or N; Y is CH or N; Z is CR2b or N; R2a and R2b are each a hydrogen atom, a halogen atom, an optionally substituted C1-C6 alkyl group, a C1-C6 haloalkyl group or the like; R2a and R2b may form, together with carbon atoms bonded thereto, an optionally substituted carbocycle, or an optionally substituted heterocycle.

Abstract: An unbalance disc detection apparatus with a photodetector for receiving at its photo reception region reflection light from a disc on which a laser light is irradiated, and a push-pull signal calculation section for obtaining a change of a light quantity detected by the photo reception region as a push-pull signal, whereby an unbalance disc discriminating section discriminates whether or not a level of the push-pull signal exceeds a threshold value set in correspondence to a predetermined measurement rotation speed.

Abstract: An apparatus for controlling a stepping motor used for moving a carriage having a pickup from a first position to a second position, the apparatus having: a calculating device for calculating a moving distance between the first position and the second position; a setting device for setting an acceleration area to accelerate the stepping motor and a deceleration area to decelerate the stepping motor, on the basis of the moving distance; and a driving device for driving the stepping motor by a one-two-phase excitation method until rotation velocity of the stepping motor increases to a predetermined velocity in the acceleration area, driving the stepping motor by a two-phase excitation method after rotation velocity of the stepping motor increases to the predetermined velocity in the acceleration area, driving the stepping motor by the two-phase excitation method until rotation velocity of the stepping motor decreases to the predetermined velocity in the deceleration area, and driving the stepping motor by the o