Abstract: The present invention aims to provide a scintillator which has a short fluorescence decay time, whose fluorescence intensity after a period of time following radiation irradiation is low, and which shows largely improved light-transmittance. A scintillator represented by the following General Formula (1), the scintillator including Zr, having a Zr content of not less than 1500 ppm by mass therein, and being a block of a sintered body. QxMyO3z:A . . . (1) (wherein in General Formula (1), Q includes at least one or more kinds of divalent metallic elements; M includes at least Hf; and x, y, and z independently satisfy 0.5?x?1.5, 0.5?y?1.5, and 0.7?z?1.5, respectively).

Abstract: A optical submarine cable system having an optical cable comprised of a main optical fiber pair and a sub optical fiber pair; a branching joint box for separating the sub optical fiber pair into a first branching optical fiber pair and a second branching optical fiber pair; a redundant optical cable comprised of extended first and second branching optical fiber pairs; and an end box mounted at the end of the redundant optical cable, so that an expansion of the system and a maintenance and operation of the system are achieved by way of the end box.

Abstract: A facsimile apparatus selectively connecting an office line together with an external telephone set having a ring tone generator and is constituted by an internal telephone set and a facsimile main body, includes an extension channel, an office line channel, a call key, a call signal generator, first to third switches, and a controller. The extension channel connects the external and internal telephone sets to each other. The office line channel connects the external and internal telephone sets to the office line. The call key is used to call the external telephone set. The call signal generator outputs a call signal to the ring tone generator. The first switch switches the office line to one of the facsimile main body and the office line channel. The second switch normally connects the internal telephone set to the office line channel.