Separation and determination of the physico chemical

Separation and determination of the physico chemical

... yield of 92% pure curcumin was obtained with no BDMC detected. Further puriﬁcation of the crystals was possible by CC. 3.2.2. CC separation of pigments from the mother liquor The compo sition of the ... in the R f values indicated in Table 1. All of the spots showed ﬂuores- cence under UV light. Some of the developing solvents employed did not promote separation...

Ngày tải lên : 01/07/2014, 13:23

6
598
0

analysis and determination of the stress intensity factor of load-carrying cruciform fillet welded joints

... joint and grows to its final length under the applied load. Figure (3) shows the results of mesh sizes density. It was noticed that there are no effects on the stability of results and the very ... under the applied load. Figure (4) shows the results of a crack increment step (Δa). It was noticed that there are no effects on the stability of results and the v...

Ngày tải lên : 24/05/2014, 20:40

7
412
0

Tài liệu TREES OF THE NORTHERN UNITED STATES THEIR STUDY, DESCRIPTION AND DETERMINATION FOR THE USE OF SCHOOLS AND PRIVATE STUDENTS doc

... consists of three parts: the blade, the thin expanded portion; the petiole, the leafstalk; and the stipules, a pair of small blades at the base of the petiole. The petiole is often very short and ... ground at the base of the tree; move the arm and pencil upward till the thumb is in line with the paper, and note where the end of the pencil com...

Ngày tải lên : 13/02/2014, 12:20

295
569
0

Tài liệu Báo cáo Y học: NMR-based determination of the binding epitope and conformational analysis of MUC-1 glycopeptides and peptides bound to the breast cancer-selective monoclonal antibody SM3 pptx

... RPAP. The size o f the interaction surface between the peptide and the non binding bottom of the Fab is 173 A ˚ 2 which c orresponds to about 36% of the interaction of the full peptide with the ... MUC-1; binding epitope. The extracellular part of the epithelial glycoprotein MUC-1 consists of tandem repeats of 20 amino acids (PDTRPAPGSTAPPAHGVTSA, where the...

Ngày tải lên : 21/02/2014, 15:20

12
717
0

Báo cáo khoa học: Separation and characterization of caveolae subclasses in the plasma membrane of primary adipocytes; segregation of speciﬁc proteins and functions docx

... of cholesterol in them. In Table 1 we have summarized the composition of the three subclasses of caveolae. The three classes of caveolae were isolated from puriﬁed plasma membranes. None of the ... presence of additional specialized sub- groups or classes of caveolin-containing membranes in the plasma membrane. We now report the separation and biochemical char- a...

Ngày tải lên : 16/03/2014, 13:20

12
460
0

Báo cáo khoa học: Determination of the redox potentials and electron transfer properties of the FAD- and FMN-binding domains of the human oxidoreductase NR1 doc

... spectroelectrochemical titrations of the isolated FAD/NADPH and FMN domains of NR1 enabled the determination of the midpoint reduction potentials for the oxidized/semiquinone (E 1 ) and semiquinone/hydroquinone (E 2 ) ... stabilization of the FMN semiquinone, consistent with (a) a need to transfer electrons from the FAD/NADPH domain to the FMN domain, and (b)...

Ngày tải lên : 23/03/2014, 21:20

12
439
0

Báo cáo khoa học: Determination of the metal ion dependence and substrate speciﬁcity of a hydratase involved in the degradation pathway of biphenyl/chlorobiphenyl pot

... Possible roles of the cation include the activation of water for the hydration reaction and ⁄ or the stabilization of the anion transition state. In the latter case, if the substrate coordination to the ... the mechanism, the substrate binding site and the role of the metal cofactor in the enzyme. Results Cloning, expression and puriﬁcation of BphH...

Ngày tải lên : 30/03/2014, 15:20

9
461
0

Báo cáo Y học: Chemical structure and immunoreactivity of the lipopolysaccharide of the deep rough mutant I-69 Rd–/b+ of Haemophilus inﬂuenzae docx

... a ntibodies; and (d) the understanding of the biosynthesis of LPS may allow the distinct blockage of e ssential steps as a new strategy for the development of antibiotics [2,3]. The smallest ... whereby the Kdo is phosphorylated either at position 4 or 5. There was some uncertainty in the beginning whether the Kdo-5P was the result of phosphate migration [4], how...

Ngày tải lên : 31/03/2014, 21:21

6
372
0

METHODS FOR DETERMINATION AND APPROXIMATION OF THE DOMAIN OF ATTRACTION IN THE CASE OF AUTONOMOUS pdf

... (1.5) The Lyapunov function V can be found theoretically using relation (1.5). In the fol- lowings, we will shortly present the procedure of determination and approximation of the domain of attraction ... Grigis, and St. Balint, An extension of the characterization of the domain of attraction of an asymptotically stable ﬁxed point in the case of a nonlinear...

Ngày tải lên : 23/06/2014, 00:20

15
289
0

Báo cáo hóa học: " Algorithms for Blind Components Separation and Extraction from the Time-Frequency Distribution of Their Mixture" docx

... peaks of the TFD slice T(t 0 , f ). By searching and counting the peaks of each TFD slice, we end up w ith a set of numbers. The number corre- sponding to the maximum of the histogram of these ... a slice of the TFD T(t, f ). (2) Search and count the number of peaks in each slice. (3) Evaluate the histogram of the obtained set of peaks numbers. (4) Esti...

Ngày tải lên : 23/06/2014, 01:20

9
182
0