We report on the long term monitoring of X-ray dips from the ultracompact low-mass X-ray binary (LMXB) XB 1916-053. Roughly one-month interval observations were carried out with the Rossi X-ray Timing Explorer (RXTE) during 1996, during which the source varied between dim, hard states and more luminous, soft states. The dip spectra and dip lightcurves were compared against both the broadband lu...

This chapter presents the study and evaluation of luminescent down shifting (LDS) layers doped with organic dyes their compatibility different types solar cells. In this study, commercial in Lumogen-F series (BASF) Violet 570, Orange 240, Red 300, Yellow 083, 170 were considered for analysis. It was found that while fulfil important characteristics materials LDS such as high photoluminescent qu...

This paper employs the solution-doping technique for fabrication of polymer optical fibers (POFs) doped with two perylene derivatives, Lumogen Yellow 083 and Red 305, in different combinations. With is very easy to control amount dopant penetration into core non-doped uncladded fibers, allowing active POFs a novel ring-doped structure. In addition manufacturing these have also been optically ch...