Abstract: A footwear for exercise providing a superior portability to that of a sports shoe and providing a comparative comfort of exercise with that of a sports shoe is provided. The footwear 1L includes a covering member 10L and an insole member 11L. On an outer surface of the covering member 10L, a rubber member 15L to cover an entire bottom side portion of the covering member 10L where the insole member 11L is placed, a rubber member 16L to extend from a front end of the covering member 10L to a nearby portion of a step-in opening 13L of the covering member 10L, and a rubber member 17L to extend from a rear end of the covering member 10L to a nearby portion of a step-in opening 13L of the covering member 10L, are provided.

Abstract: A quartz crystal oscillator in which phase noise is reduced includes: a resonance circuit having a quartz crystal unit and a split capacitor connected to the crystal unit; a transistor for oscillation having its base connected to the node of the crystal unit and the split capacitor; an output line for connecting the mutual node of the split capacitor to the emitter of the transistor; a quartz crystal resonator that is inserted in the output line; and a temperature compensation mechanism for compensating the frequency-temperature characteristics of both the crystal unit and the crystal resonator.

Abstract: A quartz crystal oscillator in which phase noise is reduced includes: a resonance circuit having a quartz crystal unit and a split capacitor connected to the crystal unit; a transistor for oscillation having its base connected to the node of the crystal unit and the split capacitor; an output line for connecting the mutual node of the split capacitor to the emitter of the transistor; a quartz crystal resonator that is inserted in the output line; and a temperature compensation mechanism for compensating the frequency-temperature characteristics of both the crystal unit and the crystal resonator.

Abstract: A biaxial oriented polyester film which is obtained by using as a main raw material a mixture comprising a thermoplastic polyester resin (i) wherein an acid component is mainly composed of a terephthalic or naphthalenedicarboxylic acid component and a thermoplastic polyester resin (ii) having substantially a phase-separated form to the resin (i), and orienting an unoriented sheet of the mixture wherein an illuminance anisotropic ratio (IAR) of transmitted scattering light satisfies the following condition of 0.1.ltoreq.IAR.ltoreq.1.0.

Abstract: A biaxially oriented polyamide film which has not only excellent bending pinhole resistance and excellent dimensional stability but also excellent tear linearity in the longitudinal direction of the film. More specifically, the invention provides a biaxially oriented polyamide film having a tear linearity in the longitudinal direction of the film, which includes as a main material nylon 6 and an aliphatic polyamide resin mixed in a weight ratio of from 75:25 to 99:1, wherein the difference in surface tension (dyne/cm) between the nylon 6 and the polyamide other than nylon 6 satisfies the following relationship (1)3.0.ltoreq..gamma..sub.A -.gamma..sub.B .ltoreq.15.0 (1)wherein .gamma..sub.A is a surface tension of N6 and .gamma..sub.B is a surface tension of PA.