Disclosed is EL phosphor powder which contains phosphor particles that comprise zinc sulfide as the matrix thereof and contain an activator and a co-activator, wherein at least 30% of the number of the phosphor particles contained in the EL phosphor powder are those having an aspect ratio of at least 3. The offset bender includes a base on which is mounted a fixed shoe support and a traveling shoe support. Namely, even when an external force is applied to the lead frame, movement of the lead frame main body section can be inhibited and a variation in the relative positions of the lead frame and the detection element can be prevented. The stream operator may compare one or more performance factors from the delay pattern to one or more optimal performance factors. To accomplish such dynamic reorganization, embodiments may maintain \u201cdirection\u201d bits for cache lines. The exposed portions of the pole tip layer are removed for forming a pole tip.