Applications of capillary electrophoresis in the analysis of natural products

... effective components in natural products Hence, the major aim of this thesis is to expand the analytical applicability of CE in the analysis of natural products The range of natural products is quite ... The migration of cations results in the migration of whole buffer solution through the capillary; this migration is the EOF Since the drivin...

Ngày tải lên: 11/09/2015, 14:27

... Introduction……………………………………… …… 1~ 57 1. 1 Basic Theory of Capillary Electrophoresis ……………………….… 1~ 6 1. 2 Electroosmotic Flow (EOF)…………………………………………… 6 ~13 1. 3 Different Modes of CE…………………………………………….…… 13 ~20 1. 3 .1 Capillary ... Optimization………………………… …… .11 4 ~11 5 4.4.4 Linearity, Repeatability and Limits of Detection………… … 11 5 ~11 9 4.4.5 Application…………………………………………...

Ngày tải lên: 14/09/2015, 10:36

... just ranges from to 20 nl To increase the sensitivity, two approaches, either to increase the amount of analyte added to the capillary or to improve the sensitivity of the detector, may be applied ... though they migrate opposite to the direction of the EOF, are also transported to the detector (on the cathode side) Since their migration velocitie...

Ngày tải lên: 14/09/2015, 10:37

... CAPILLARY AND MICROCHIP ELECTROPHORESIS FOR THE ANALYSIS OF SMALL BIOMOLECULES ELAINE TAY TENG TENG (B.Sc (Hons), NUS) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF SCIENCE DEPARTMENT OF ... changes in the level of these small biomolecules However, these small biomolecules are present in small amount in the human body such that their analyses are...

Ngày tải lên: 02/10/2015, 12:56

Ngày tải lên: 17/02/2014, 20:20

... most of the duplicate relational triples Finding relational triples by text processing As the performance statistics above show, parsing is painfully slow For the simple business of finding and ... passives inverted, inflected forms analyzed, and other modifications of the kind often brought under the rubric of "transformations." The LSP can this sort of thing very w...

Ngày tải lên: 08/03/2014, 18:20

... be taken to minimize the effect of these factors In our analysis we excluded ancient DNA misincorporations, which usually lead to transitions, by simply calculating only the number of transversions ... which these alignments are found increases (Figure 1b) However, this seemingly paradoxical result can be explained in the following way The chance of finding a seed-match...

Ngày tải lên: 09/08/2014, 20:22

... groups for conjugation) were principal contributors for the QD-biomolecule electrophoretic behavior Various methods for bioconjugation (selective and non -selective) were performed based on the nature ... many proteins This ultimately Another drawback for the use of EDCHCl/sulfo-NHS for the formation of stable bioconjugates is the lack of specificity on the pr...

Ngày tải lên: 11/08/2014, 00:22

... difficulties in defining software requirements and business process modeling DEMO can help capture the business processes of the organization while RAD technique links these business processes to the software ... steps of the related transactions Capturing the business processes of the organization, it can be used as the starting point to design the supporting...

Ngày tải lên: 02/08/2015, 13:22

... focused on the analysis of DNA fragments; and the second part (chapter and chapter 5) focused on the analysis of organic pollutants Several novel capillary electrophoresis (CE) techniques had ... various applications, the CE applications in DNA analysis and monitoring of pollutants are of significant importance 1.3.1 CE Application in DNA Analysis...

Ngày tải lên: 14/09/2015, 11:40

... study the degradation behavior in ultrapure water, drinking water, rain water, river water and seawater under various pH and irradiation sources (sunlight, darkness, indoor incandescent lighting and ... propham (66 %), which probably underwent thermal degradation under the extraction conditions The results indicate that although carbamates tested in this study are thermally...

Ngày tải lên: 16/09/2015, 17:13

... freedom for the assignment of the variables under consideration The assignment of the main variables (A, B, C and D), two-variable interaction, and the level setting values of the main variables ... optimization of the MAE conditions To apply these techniques in practical applications, in this chapter I 138 demonstrated the application of these techniques...

Ngày tải lên: 16/09/2015, 17:13

... 88 An interesting result observed from Fig 4- 6 is that in the same solvent, the recovery increases in going from PAHs to PCBs, and then to triazines (i.e, increasing polarity of analyte) The recovery ... 88.1±3.7 89.8±3.2 91 .4 3.0 93.5 4. 5 41 .0±3.8 18 .4 4. 0 10 80.0±3.6 84. 2 4. 5 89.2±5.0 90.2 4. 0 93.2±2.9 94. 6±3.7 36.8±2.8 15.2±2 .4 15 79 .4 5.0 84. 6±3.6 86.6±3.6 87...

Ngày tải lên: 16/09/2015, 17:13

... 160.9 31 8.2 250.6 53. 3 3. 07 2.1 1. 43 60 52 45 * at pH 10.5, units of k and t1/2 are s-1 and s, respectively a incandescent lighting 64 3. 3 .3 Degradation of Propoxur in Natural Water In order to provide ... light intensity affects the K and t½ in each natural water sample K increases and t½ decreases accordingly when the light intensity increases in the ord...

Ngày tải lên: 16/09/2015, 17:13

... levels of the target analysts in soil samples before spiking 2. 3 .2. 2 Freshly spiked soils Freshly spiked soil samples were prepared by adding an appropriate volume of spiking solutions into the ... possible traces of PAHs, PCBs, triazines, carbamates and other organic contaminants, 100 g of each of the soil sample was immersed in 20 0 ml 46 each of methanol,...

Ngày tải lên: 16/09/2015, 17:13