Rare-earth doped low phonon glasses are attractive media for unconverted, short wavelength fiber lasers. Fluorozirconate glass (ZBLAN) is one of the most popular representatives of this type of materials. Lasing in the visible part of spectrum has been reported in various upconversion pumped RE doped ZBLAN systems [1-2], but till now generation in the ultra-violet (UV) has only been observed in...

In this research paper a novel Ultra Violet Photo Catalyst Oxidation (UVPCO) sensor for air and surface sanitization using Common Source (CS) amplifier is presented. The ultra violet photo catalysis is the process in which the highly reactive radicals like H+, OH-and peroxides ions are produced from air in the presence of the ultra violet radiation and photo catalyst. In this process, the free ...

The distal photoreceptors in the tiered retina of Papilio exhibit different spectral sensitivities. There are at least two types of short-wavelength sensitive receptors: an ultraviolet receptor with a normal spectral shape and a violet receptor with a very narrow spectral bandwidth. Furthermore, a blue receptor, a double-peaked green receptor and a single-peaked green receptor exist. The violet...

The results of a study and application of leucocrystal violet for the determination of antimony in parts per million levels is described here. The proposed method is based on the reaction of antimony(III) with acidified potassium iodate to liberate iodine. The liberated iodine selectively oxidizes leucocrystal violet to crystal violet dye. The formed dye shows maximum absorbance at 590 nm. The ...

This study was designed to investigate the removal of reactive violet 48 from wastewater using Commercial activated carbon and Coir pith activated carbon. Its adsorption capacity has been tested for the decolourization of waste water containing reactive violet 48. The effect of system variables such as concentration, temperature, contact time and pH were studied. The adsorption data follow Lang...

The application of Leuco Crystal Violet (LCV) for the enhancement of footwear and fingerprint impression evidence was first utilized in the FBI Laboratory in late 1993, after learning from Mr. John F. Fischer (1) of the formulation of this reagent. Mr. Fischer subsequently made a presentation on this topic at the International Symposium on Footwear and Tire Tread Impression Evidence at the FBI ...

In this paper we describe a storage system called Violet that efficiently marries fine-grained host side data management with capacity optimized backend disk systems. Currently, for efficiency reasons, real-time analytics applications are forced to map their in-memory graph like data structures on to columnar databases or other intermediate disk friendly data structures when they are persisting...

ducing to the medical world the possibilities of treating successfully diseases of the integument by light. It very possibly had not occurred to him how great a field he was opening up when first he directed his attention to concentrating the radiant energy of the sun upon the skin for the purpose of destroying in situ the germs of disease; but undoubtedly he was the pioneer of all that is now ...

Effluent of various industries contain number of inhibitory substances which are continuously added in sea via river and results in water pollution. There is need to degrade the organic content to abate water pollution. In the present study, actinomycetes were isolated on glycerol aspargine agar from marine sample of Calangut beach, Goa. The isolates were tested for their potential to tolerate ...

At the present time there is no satisfactory procedure for estimating the degree of gram positivity although the need for a quantitative method is widely recognized. Recently Kennedy and Barbaro (1953) reported an accurate and reproducible method for determining quantitatively the adsorption of crytl violet by bacteria. In addition, the effect of the species and strain of the organism used, the...