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Приказ резултата 1-10 од 1328
Spectroscopic and quantum chemical investigations of substituent effects on the azo-hydrazone tautomerism and acid-base properties of arylazo pyridone dyes
(Oxford : Pergamon-Elsevier Science Ltd, 2014)
A series of 5-(4-substituted arylazo)-6-hydroxy-4-methyl-3-cyano-2-pyridone dyes was synthesized and the structure of the dyes was confirmed by UV-Vis, FT-IR, H-1 NMR and C-13 NMR spectroscopic techniques. The azo-hydrazone ...
CO2 Conversion Enhancement in a Periodically Operated Sabatier Reactor: Nonlinear Frequency Response Analysis and Simulation-based Study
(Wiley, 2018)
Conversion of CO2 into synthetic CH4 via thermocatalytic hydrogenation (the Sabatier reaction), has recently gained increasing interest as a possible route for CO2 utilization and energy storage pathway. Herein, we analyze ...
Periodic Operation with Modulation of Inlet Concentration and Flow Rate Part II: Adiabatic Continuous Stirred-Tank Reactor
(Wiley-V C H Verlag Gmbh, Weinheim, 2016)
The nonlinear frequency response (NFR) method, which is an analytical, fast, and easy method for evaluating the performance of forced periodically operated chemical reactors, was used to investigate possible improvements ...
The Effect of Humic Acids on Zymogenous Microbial Consortia Growth
(Wiley-Blackwell, Hoboken, 2014)
This paper describes experiments with standard humic acids (HA-S) and humic acids (HA) isolated from soil that was contaminated with mazut and treated with a consortium of microorganisms for the process of bioremediation ...
Gold(III) complexes with esters of cyclohexyl-functionalized ethylenediamine-N,N '-diacetate
(Elsevier Science Inc, New York, 2013)
Six novel gold(III) complexes containing O,O'-dialkyl-(S,S)-ethylenediamine-N,N'-di-2-(3-cyclohexyl)propanoate ([AuCl2{(S,S)-R(2)eddch}]PF6, R = Me, Et, n-Pr, n-Bu, i-Bu, i-Am; 1-6, respectively) were synthesized and ...
Chromatographic methods in determination of the soil-water partition coefficient
(Taylor & Francis Inc, Philadelphia, 2016)
The soil-water partition coefficient normalized to the soil organic carbon content (K-OC) is one of essential properties governing the fate of organic chemicals in the soil-water compartment. It is a parameter of utmost ...
Evaluation of Performance of Periodically Operated Reactors for Single Input Modulations of General Waveforms
(Wiley-V C H Verlag Gmbh, Weinheim, 2016)
The nonlinear frequency response (NFR) method is used for evaluating the time-average performance of a chemical reactor subjected to single input modulations of general waveforms, by using Fourier series for representing ...
Cyclohexane oxidation and cyclohexyl hydroperoxide decomposition by poly(4-vinylpyridine-co-divinylbenzene) supported cobalt and chromium complexes
(Elsevier Science Sa, Lausanne, 2010)
Polymer supported catalysts with Co(II) and Cr(VI) ions were prepared and characterized by means of FTIR, diffuse reflectance UV-vis, nitrogen physisorption, mercury porosimetry and SEM-EDX measurements. The catalytic ...
Synthesis and biological activity of derivatives of the marine quinone avarone
(Elsevier France-Editions Scientifiques Medicales Elsevier, Paris, 2010)
Nine alkyl(aryl)thio derivatives of the marine sesquiterpene quinone avarone were synthesized by nucleophilic addition of thiols or thiophenol to avarone. In most cases only one regioisomer was obtained. Their cytotoxic ...
Electrochemical monitoring of the breast milk quality
(Elsevier, 2018)
The electrochemical techniques were used to determine the total antioxidant capacity of breast milks and the results were compared with a commonly used spectrophotometric (2,2-diphenyl-1-picrylhydrazyl, DPPH) method. Breast ...