The present invention pertains to a strand carrier for braiding apparatus providing with a strand supplier on a main board which comprises a strand bobbin with strand threaded thereon and a braid controlling mechanism for driving a rotation of the bobbin. An output signal produced in response to the detecting of the radiation exposure can be provided, and the detection of and output of a signal in response to the radiation exposure is entirely automatic and independent of any manual processing of the radiation exposure recording device. By virtue of these characteristics, these compounds are remarkably useful in clinical medicine as highly safe preventive andor therapeutic agents for inflammatory respiratory tract diseases which can be administered for a long period of time. The opening portion is provided in the another disk cartridge main body and the opening portion is closed by a shutter arranged at the another disk cartridge main body such that the disk-shaped recording medium is shielded from outside by the shutter when the disk cartridge is outside of the recording andor reproducing device. The forcing member urges the engagement lug of the lock arm body to engage the engagement lug with the ink cartridge attached to the holder. In one embodiment, a data repository abstraction layer provides a logical view of an underlying data repository that is independent of the particular manner of data representation.