The new mild chromium (VI) oxidizing agent, quinoxalinium bromochromate (QxBC), was prepared and characterized. This new compound is effective in the oxidation of alcohols and in the bromination of aromatic compounds.  Keywords: Quinoxalinium Bromochromate, Oxidation, Alcohols, Bromination

Let A be a Banach algebra with a bounded approximate identity. Let  and be respectively, the topological centers of the algebras A** and (AA*)* with respect to the second Arens multiplication. In this paper, we show that is isometrically isomorphic…

In the field of mineral processing, it is important to determine the size of a particle. A method of defining an average diameter for a collection of particles is presented. The theoretical basis developed for the purpose is verified by…

In the present paper, we propose a modification for a certain family of summation integral type operators. We study direct results on the modified operators. It is also observed that our modified operators have better estimates over the original operators.Key…

The purpose of this study was to investigate the level of endogenous abscisic acid of wheat seeds germinated in the presence of 60, 90 and 120 ppm of mercury, cadmium and copper salt solutions for 16 hours in order to…

This investigation was conducted in July 2005 when dead fish were encountered in BalıklıgÖl. A parasitic copepod, Lamproglena pulchella Nordmann,1832 (Cyclopoida; Lernaeidae) in the gills of two cyprinid species was reported for the first time in BalıklıgÖl (Şanlıurfa). The Infestation…

It is well known that the computer in lighting technology is a vital component for lighting designers. Lighting computer programs are preferred in preparing architectural projects in lighting techniques, especially in lighting calculations. Lighting computer programs, which arise with the…

The fracturing of rocks in mines and quarries may be regarded as the first stage  of comminution. The use of commercially available expansive materials in the dimension stone quarries is on the increase due to their effectiveness in controlled fracturing.…

A semi-automatic algorithm for finite element analysis is presented to obtain the stress and strain distribution in shear wall-frame structures. In the study, a constant strain triangle with six degrees of freedom and mesh refinement - coarsening algorithms were used…

In this study, flow and friction characteristics in the rectangular-to-rectangular transition channels, which have cone angles of ф=40, 50, 60 were investigated experimentally. The ratio of the channel inlet cross-sectional area to that of exit is 1:2. The transition ducts…