Novel processes for preparing optically active cyclopentanones 1which are useful for the preparation of benzindene Prostaglandins and novel cyclopentanones are provided. A wiring layer having a first and second metal layer is formed on a substrate including a display region and a pad region. The present invention also relates to functional sweetener compositions and methods that can improve the tastes of non-caloric or low-caloric high-potency sweeteners by imparting a more sugar-like taste or characteristic. The carbon nanotube structure has two joined portions, one portion is a triangle shaped carbon nanotube film, which is an electron emitting portion, the other portion is a carbon nanotube wire, which is a support portion. Secondly, the phosphor powder is prepared for emitting a phosphor light mixed with the blue light to produce the white light. The pseudo random beam hopping sequence provides a gain due to interference diversity in addition to the antenna array gain.