Enantiomeric separation
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Enantiomeric separation of a group of chiral dihydropyridines by electrokinetic chromatography
... the enantiomeric separation of some chi- ral ...the enantiomeric separation of five DHPs (amlodipine, nitredipine, nimodipine, isradipine, and nisoldipine) ...
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Enantiomeric separation of ornithine in complex mixtures of amino acids by EKC with off line derivatization with 6 aminoquinolyl N hydroxysuccinimidyl carbamate
... min) enantiomeric separation of Orn in complex mixtures of amino ...best enantiomeric separations were achieved with a dual CD system composed by 5% (m/v) HS-  -CD and 2% (m/v) acetylated- ␥ -CD in ...
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Enantiomeric separation of the chiral phenoxy acid herbicides by electrokinetic chromatography Application to the determination of analyte selector apparent binding constants for enantiomers
... technique, enantiomeric separation can be achieved relatively fast, with high resolution and using a small amount of sample and chiral selector, by means of electrokinetic chromatography ...
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Fast enantiomeric separation of basis drugs by electrokinetic chromatography Application to the quantitation of terbutaline in a pharmaceutical preparation
... the enantiomeric separation of the basic drugs studied in this work (epi- nephrine, terbutaline, clenbuterol, and ...maximum enantiomeric resolu- tion value depended on the basic druginvestigated, 30 ...
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Rapid enantiomeric separation of polychlorinated biphenyls by electrokinetic chromatography using mixtures of neutral and charged cyclodextrin derivatives
... MEKC [15,16], longer analysis times (between 15 and 25 min) were required in contrast to the result described in this work (analysis time less than 8 min) (see Fig. 1b). These chiral separations were also reported by GC ...
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Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis Application to the determination of malathion in water samples after preconcentration by off line solid phase extraction
... The separation of the enantiomers of a group of organophosphorus pesticides (OPs) has been investigated by electrokinetic chromatography (EKC) using different anionic cyclodextrins as chiral ...individual ...
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Effect of the combined use of gamma cyclodextrin and a chiral ionic liquid on the enantiomeric separation of homocysteine by capillary electrophoresis
... Effect of the combined use of γ-cyclodextrin and a chiral ionic liquid on the enantiomeric separation of homocysteine by capillary electrophoresis.. Article begins on next page.[r] ...
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Fast enantiomeric separation of uniconazole and diniconazole by electrokinetic chromatography using an anionic cyclodextrin: application to the determination of analyte selector apparent binding constants for enantiomers
... the enantiomeric resolution of fungicides was investigated by using different chiral selectors in the separation ...the separation buffer did not produce the enantioseparation of any of the ...
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Enantiomeric separation and determination of stereospecific drug release from marketed racemic omeprazole products by chiral HPLC
... From the S/R ratios of different racemic omeprazole marketed products it was concluded that at 5 and 10 min disso- lution time points there was a stereospecific drug release between the [r] ...
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EURISTIC INSTRUCTION FOR WAVE EQUATION PROBLEM-SOLVING USING VARIABLE SEPARATION METHOD
... In Math, a partial differential equation (sometimes abbreviated as PDE) is a relationship between a mathematical function of several independent variables x,y,z,t, and the partial derivatives of u with respect to these ...
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Variable Neighborhood Search for the Vertex Separation Problem
... vertex separation problem belongs to a family of optimization problems in which the objective is to nd the best separator of vertices or edges in a generic ...vertex separation problem on general ...
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Solution-phase racemization in the presence of an enantiopure solid phase.
... We report here solubility and enantiomeric excess meas- urements in two different systems that help to uncouple the solution chemical reaction from the physical processes of dissolution/[r] ...
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Hypericin Extraction Methods and Purification
... Different SPE sorbents such as CG-400, CG-50, Amber- lite XAD-7, activated carbon, and silica gel were tested for purification purposes. Among them, silica gel was shown the best band separation and purification ...
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Separation of Powers and Political Budget Cycles
... on separation of powers and budget institutions, recent empirical evidence has shown that many aspects of the political system (namely, electoral rules, forms of government, level of democracy, degree of electoral ...
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Multi channel speech separation in reverberant environments
... Speech separation in reverberant environments is not a easy task for many SSS ...speech separation solution that works properly in the presence of reverberation effects but using a simple microphone ...
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Novel thermally rearranged copolymers and apllication for gas separation membranes
... Achieving higher permeability in polymer membranes means to counterbalance with the decrease in permselectivity determined by the well-known permeability-selectivity trade-off relationship. Robeson suggested the plots of ...
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(06)Air-separation-into-oxygen-nitrogen-and-argon
... Argon is present in the amount of 0.93% by volume of air. This presence of argon makes it impossible to obtain pure oxygen and nitrogen streams from the air separation plants. Therefore, argon is drawn out of ...
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The stratigraphy separation diagram–an amazing tool for fault analysis
... The separation is produced only by perpendicular slip and any length of the trace slip has no effect on ...of separation depending on the observed direction, i.e. “vertical separation” measured in ...
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Regularity of solutions to a lubrication problem with discontinuous separation data
... We study the regularity of the solution to the Reynolds equation for incompressible and com- pressible fluids when the gap between the lubricated surfaces, "h(x,y)", presents a d[r] ...
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Maternal separation on the ethanol preferring adult rat liver structure
... The UChA strain rats (rats selected for low vol- untary 10% EtOH consumption with brother X sis- ter mating, Wistar) and UChB (rats selected for high voluntary 10% EtOH consumption with broth- er X sister mating, Wistar) ...
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