نتایج جستجو برای: vis spectrometry
تعداد نتایج: 119813 فیلتر نتایج به سال:
The Macedonian election rules, i.e. the setting of electoral system, produce a double effect, an effect on voter, and party system. Therefore, each change in regulations would not only alter voters’ comportment but also impact political parties. Considering these effects, paper aimed to compare attitudes citizens parties regarding legislature (both for parliamentary local elections); adequate s...
This study is an assessment to understand the current nature of Indian Federalism. The country has various forms government and works in their respective fields powers. article explores concept meaning federalism. Further, it also expresses policies related federalism followed by respected governments within purview India. considers governments, governing powers, overall implementation Central ...
Abstract The structurally related cobalt β‐diketonate complexes Co(acac) 2 , ⋅ TMEDA, Co(tfac) and Co(hfac) TMEDA (acac=2,4‐pentanedionate, tfac=1,1,1‐trifluoro‐2,4‐pentane‐dionate, hfac=1,1,1,5,5,5‐hexafluoro‐2,4‐pentane‐dionate, TMEDA= N ′, ′‐tetramethylethylenediamine) were thermochemically (thermogravimetric analysis, differential scanning calorimetry) spectroscopically (infrared, UV‐VIS el...
Despite the importance of tryptophan (Trp) radicals in biology, very few radicals have been trapped and characterized in a physiologically meaningful context. Here we demonstrate that the diheme enzyme MauG uses Trp radical chemistry to catalyze formation of a Trp-derived tryptophan tryptophylquinone cofactor on its substrate protein, premethylamine dehydrogenase. The unusual six-electron oxida...
2,4,6-Trinitrotoluene (TNT) transformation by the yeast strain Yarrowia lipolytica AN-L15 was shown to occur via two different pathways. Direct aromatic ring reduction was the predominant mechanism of TNT transformation, while nitro group reduction was observed to be a minor pathway. Although growth of Y. lipolytica AN-L15 was inhibited initially in the presence of TNT, TNT transformation was o...
Syntheses of new glycosylated neutral and cationic porphyrin dimers linked at the meso-position via a flexible hydrocarbon chain are described. A detailed 1H and 13C NMR study allows their complete structural elucidation. The UV-visible, fluorescence and MALDI mass spectra are also presented. Photocytotoxicities of these compounds against K562 leukaemia cell line are compared to those of Photof...
This thesis considers issues related to the multivariate analysis and calibration of chemical data collected in a vector format (one–way data). The work is designed to facilitate the task of the analytical chemist, focusing on methods of maximizing the amount of information that can be obtained by multivariate modeling from full sets of data generated by instruments or experiments. It is shown ...
Nitroalkane oxidase from Fusarium oxysporum catalyzes the oxidation of nitroalkanes to aldehydes with production of nitrite and hydrogen peroxide. The UV-visible absorbance spectrum of the purified enzyme shows a single absorption peak at 336 nm with an extinction coefficient of 7.4 mM-1 cm-1. Upon denaturation of the enzyme at pH 7.0, a stoichiometric amount of FAD is released. The spectral pr...
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