Three antituberculosis medications are investigated in this work consist of rifampicin, isoniazid and pyrazinamide. The ultra violet (UV) spectra of these compounds are overlapped, thus use of suitable chemometric methods are helpful for simultaneous spectrophotometric determination of them. A generalized version of net analyte signal standard addition method (GNASSAM) was used for determinatio...

A partial least squares (PLS) calibration model was developed for the simultaneous spectrophotometricdetermination of Pb (ΙΙ), Cu (ΙΙ) and Ni (ΙΙ) using xylenol orange as a chromogenic reagent. The parameterscontrolling behavior of the system were investigated and optimum conditions were selected. The calibrationgraphs were linear in the ranges of 0.0–9.091, 0.0–2.719 and 0.0–2.381 ppm for lead...

In this paper, bid determination problems are studied. In particular, the central problems of allocation, acquisition, completion, and arbitrage are defined. The main theoretical result states that bid determination in double-sided auctions—i.e., completion—where goods can be sold as well as bought, is polynomial-time reducible to bid determination in single-sided auctions—i.e., acquisition. Su...

At an external pH of 7.40, pH DMO was 7.17 while pH nicotine was 6.69-a pH difference of 0.48 pH units (P <0.001). In either respiratory or metabolic alkalosis both DMO and pH nicotine rose so that differences between them remained essentially constant. Metabolic acidosis induced a decrease in both values though they fell more slowly than did extracellular pH. In contradistinction, in respirato...

An enzymatic method has been developed to simultaneously determine glucose, maltose and sucrose in tubers The principle of the method is based on an enzymatic cleavage of these disaccharides and specific measurement the resulting glucose using an enzymatic procedure described by Holm (3). The study comprises two parts; the first one includes modifications of the pretreatment method to minimize ...

Multi-robot task allocation is an important problem for heterogeneous mobile robots. Simultaneous allocations with which multiple tasks are being allocated concurrently tend to lead to more efficient allocations than online or single task allocations. However, the simultaneous allocation also increases the complexity in the winner determination process, especially when robots are required to co...

Diphenylcarbazone has been used for the simultaneous and individual determination of zinc(II) and cadmium(II) at trace levels. The carbazone complexes of zinc(II) and cadmium(II) at pH 7–10 are pink in color, and are soluble in TX-100 micellar media. Under optimum conditions, calibration graphs for individual and simultaneous determination by first, second, third and fourth derivative spectroph...

The metal ions constituents in plants reliable for determination of their medicinal, nutritional and toxicity properties. A novel, simple and accurate spectrophotometric method was developed for the simultaneous determination of Ag+, Cu2+ and Ni2+ ions in different medicinal plants without prior separation steps. This method was based on the different kinetic characteristics between the reactio...