181 |
The separation technique for nonlinear partial differential equations : General results and its connection with other methodsMalloki, I. A. January 1987 (has links)
No description available.
|
182 |
Charakterizace nových chirálních separačních systémů pro použití v HPLC / Characterization of new chiral separation systems for HPLCVozka, Jiří January 2014 (has links)
The dissertation thesis is focused on the physico-chemical characterization of interaction mechanisms of chiral stationary phases based on derivatized cyclofructans. Correct interpretation of retention and enantiodiscrimination processes substantially facilitates the development and optimization of new enantioselective methods using cyclofructan-based chiral stationary phases. At first, the interaction mechanisms of three commercially available cyclofructan-based stationary phases were studied in normal-phase mode of liquid chromatography. Namely, systems using chiral stationary phases based on dimethylphenyl carbamate cyclofructan 7, R-naphtylethyl carbamate cyclofructan 6 and isopropyl carbamate cyclofructan 6 were studied. Linear free energy relationship model was used as a basic tool for characterization of interactions on the stationary phases. The mentioned model revealed that the main interactions contributing to retention in cyclofructan-based systems are hydrogen bond acidity and dipolarity/polarizibility, while dispersion interactions cause decrease of retention. The impact of oligosaccharide skeleton of the cyclofructan selector on the enantioselectivity was elucidated by the comparison with seemingly analogous cyclodextrin-based chiral stationary phases. Cyclofructan-based chiral...
|
183 |
Synthesis and Characterization of Calixsalen Macrocycles and Calixsalen Metal Complexes and their Potential ApplicationsAltamimy, Monerah 06 1900 (has links)
Calixsalens, which are vase-like structures with a salen unit at each of their triangular vertices, have unique properties that make them potential candidates for separation. However, the use of calixsalens for separation had not previously been studied. In this work, we synthesized two calixsalen derivatives using the concept of dynamic covalent bond formation (imine).1H NMR, 13C NMR, mass spectrometry and Single Crystal X-ray Diffraction (SCXRD) confirmed the successful formation of [3+3] macrocycles. We investigated the selective adsorption of hexane isomers by the calixsalens. 1H NMR and gas chromatography analyses showed that calixsalen is more selective towards branched hexane isomers (3-methylpenaten, 2-methylpentane, 2,2-dimethylbutane, and 2,3-diethylbutane) compared to n-hexane. Treatment of these macrocycles with different types of metal ions transformed their conformations from [3+3] to [2+2] macrocyclic metal complexes, which was confirmed by SCXRD. The calixsalen metal complexes were preliminary tested for Styrene/Ethylbenzene separation.
|
184 |
Extraction, partial purification and characterization of transglutaminase from the liver of bluefish (Pomatomus saltatrix)Subramanian, Vidya. January 2008 (has links)
No description available.
|
185 |
Separation and coalescence phenomena in three phase systemsSmith, Peter Graham. January 1984 (has links)
No description available.
|
186 |
Biocatalysis of immobilized lipoxygenase in organic solvent mediaDioum, Ndeye. January 2000 (has links)
No description available.
|
187 |
Isolation and characterization of proteins from defatted flaxseed mealEl-Ramahi, Razan S. January 2003 (has links)
No description available.
|
188 |
Electrofiltration of hydrophobic colloids in fluidized bed bipolar electrodesSeoud, Hicham F. January 1980 (has links)
No description available.
|
189 |
An immunochemical analysis of goldfish brain proteins using antisera raised against memberane fractions /Manseau, Maryse January 1989 (has links)
No description available.
|
190 |
Chemical separation in electrostatic precipitatorsSalcedo, R.L.R. (Romualdo L.R.) January 1981 (has links)
No description available.
|
Page generated in 0.124 seconds