The 11th magnitude star LS IV−083 has been classified previously as an OB star in the Luminous Stars survey, or alternatively as a hot subdwarf. It is actually a binary star. We present spectroscopy, spectroscopic orbital elements, and time series photometry, from observations made at the Kitt Peak National Observatory 2.1m, Steward Observatory 2.3m, MDMObservatory 1.3m and 2.4m, Hobby-Eberly 9...

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...

Background: Proliferating trichilemmal tumors are slow-growing lobulated masses most commonly found on the scalp of elderly women. Due to the locally invasive nature of the lesion, the treatment is complete excision of the tumor with tumor-free margins. Methods: We present two cases of trichilemmal tumors that exhibited aggressive local invasion across tissue planes. The first case had dural in...

Prompt photon production has been known to be a sensitive probe to the gluon luminosity inside a hadron because it is mainly produced by quark-gluon scattering. For the same reason prompt photon production should also be sensitive to the anomalous couplings of gluons to quarks. We will examine the effects of two specific anomalous couplings – chromoelectric and chromomagnetic dipole moments of ...