structural characterization of nano and mesoporous materials by molecular simulations

... Surface modes and closed forms of light scattering by electrically small coated nanostructures (coated nanocylinders and nanospheres) are given and found to be very applicable and they match ... a nanocylinder in the nano shielding system with r = and a = 17.5 nm 102 4.18 Magnetic and electric field distributions of a nanocylinder in the nano shielding system with r = and ... Magnetic and electric field distributions of a nanocylinder in the shielding nanosystem with 5.1 r = and a = 35 nm 104 The real and imaginary parts of A0 The three curves stand for...

Ngày tải lên: 12/09/2015, 09:55

... structure of GeMn nanodots grown by molecular beam epitaxy [MBE] We observed a structural change from being disordered GeMn nanodots to ordered nanodots and then to ordered nanocolumns by varying the ... of substrate, Mn concentration, and growth temperature on the behavior of the GeMn nanodots are not yet explored although it is critical to fundamentally understand the structural evolution of ... Wang*1,3, Kang L Wang4, John Drennan5, and Jin Zou*1,5 Division of Materials, The University of Queensland, Brisbane, QLD 4072, Australia Department of Electrical and Computer Engineering, Iowa State...

Ngày tải lên: 18/06/2014, 22:20

... 49 3.2.2 Effect of PVAc on the adsorption and thickness of MIPs………….53 3.2.3 Sorption characterization of SMZ-sensor………………………… 57 3.2.4 Characterization of polymer films with AFM and SEM………… 58 ... adsorption by the formation of a more porous and open structure of the polymer All of the results show that good reproducibility, sensitivity and selectivity can be achieved And the thickness of the ... advantage of the latest advances in electronic engineering, and by a column and control units of logical and compact design Start-up, shutdown, observation and photography can all be performed by simple,...

Ngày tải lên: 26/09/2015, 10:05

... utilization of fly ash and with understanding of potential environmental and health impacts associated with its disposal by land filling In this paper an attempt has been made to modify the fly ash by transforming ... magnification, (C and D) SEM of ball milled fly ash for 20 h at 1,000 and 3,000 times magnification, (E and F) SEM of ball milled fly ash for 40 h at 1,000 and 3,000 times magnification, (G and H) SEM of ball ... shows the SEM images of nanostructured fly ash after different times of ball milling Figure (C and D) corresponds to the photomicrographs of nano- structured fly ash after 20 h of ball milling The...

Ngày tải lên: 22/06/2014, 18:20

... understanding of its functional aspects [7] However, structural characterization of oligosaccharides in glycoproteins is one of the most difficult challenges and often requires the application of multiple ... MALDI-TOF MS ⁄ MS analysis for structural elucidation as detailed in the Materials and Methods MALDI-TOF spectra of peak (0.2 M-eluted) from the SFC group (A) and its respective MALDI-TOF MS ⁄ ... presence of protease inhibitors for further studies SDS/PAGE of laminin The purity of laminin was ascertained by 3.5% SDS ⁄ PAGE and visualized by silver staining for bands corresponding to 400 and...

Ngày tải lên: 22/03/2014, 17:20

... of Glu, glycosylation of Ser or Thr, bromination of Trp, sulfation of Tyr, cyclization of N-terminal Gln, and epimerization of several different residues It is quite rare for such a variety of ... supported by Oi-HNi + hydrogen bonds for Asn11(CO)–Trp14(HN) and Ser12(CO)– Thr15(HN), and confirmed by the slow solvent exchange kinetics of the amide protons of Trp14 and Thr15 The observation of two ... better Ramachandran plots were chosen to represent the three-dimensional solution structure of conomarphin, and the mean structure was generated by molmol Structural characterization and comparison...

Ngày tải lên: 18/02/2014, 17:20

... p.[L48S]+[Q301P] genotype and a clinical diagnosis of HPA II The BH4 loading test showed BH4 responsiveness with a decline of plasma Phe by more than 30% at T32 and by 77.1% at T48, as predicted by the allelic ... activity of the p.Q301P variant, we analyzed the putative alterations produced by mutation in the 3D structure of the ternary complex as constituted by the PAH enzyme, the BH4 cofactor and thienylalanine, ... varies in distinct populations and geographic areas [79] and a number of them have been analyzed and characterized in vitro [10,11] Identication of the mutations and subsequent in vitro expression...

Ngày tải lên: 16/03/2014, 01:20

... was shown by 1D and 2D NMR analysis, MS, and chemical methods that the O-PS of the LPS produced by F columnare ATCC 43622 is a linear unbranched polymer of trisaccharide units composed of D-GlcNAcA, ... at 15.8 and 11.9 p.p.m characteristic – 175.4 of methyl shifts of 6-deoxyhexose residues, signals at 167.0 p.p.m (C¼N) and 19.8 p.p.m (CH3-C¼N) characteristic of acetamidino groups, and ring ... 52.8 and 51.1 p.p.m indicative of C-N-linked substituents, together with a total of four signals subsequently assigned to methyl groups of two N-acetyl substituents (22.8 and 23.0 p.p.m.), and...

Ngày tải lên: 17/03/2014, 10:20

... prepared by thermal decomposition at 873 K, in the presence of a few percent of (SO4)22 Figs 11 and 12 show the particle morphology and stoichiometry determined by SEM and EDX examinations of the ... with coordinates of ð0; 0; zÞ occupy 2/3 of the octahedral holes in successive oxygen layers, and 1/3 of the octahedral holes with coordinates of ð0; 0; 0Þ are empty In the case of our samples, ... –xSnO2 nanoparticles Major ¨ changes in Mossbauer line shape and the disappearance of magnetic hyperfine structure as tin content in the samples M Sorescu et al / Journal of Physics and Chemistry of...

Ngày tải lên: 19/03/2014, 16:48

... characterized by a strict substrate specificity towards inosine and guanosine This paper describes the cloning, recombinant expression and structural and functional characterization of purine nucleoside ... The results of substrate specificity studies are supported by the analysis of the sequence alignment of PfPNP, PfMTAP, hMTAP and hPNP reported in Fig The amino acid residues of PfPNP and Fig Multiple ... responsible for the different substrate specificity of hPNP and hMTAP (Glu201, Asn243 and Val245 of hPNP instead of Ser178, Asp220 and Asp222 of hMTAP, respectively) The last important substitution...

Ngày tải lên: 23/03/2014, 09:21

... composed of  35% a helix and a small amount of b sheet, whereas PrPSc appears to have elevated levels of b sheet [7,8] Higher resolution studies of the structure of PrPC have made use of NMR and ... both an electrostatic and a hydrophobic component The composition of the membranes and conformation of PrP affect the strength of the binding and the propensity for aggregation of the protein It ... reaction followed by dialysis and subsequent removal of precipitated protein was typically 80% of the reduced protein obtained This gave an overall yield of PrP-React of 12–20 mg per litre of culture...

Ngày tải lên: 23/03/2014, 10:21

... detection of the Ndh complex with a molecular mass between 800 and 1000 kDa [8,9] By using BN ⁄ PAGE and Tricine ⁄ PAGE or CN ⁄ PAGE, BN ⁄ PAGE and Tricine ⁄ PAGE, we found that the molecular mass of ... minimum of 14 subunits (with a molecular mass between 10 and 70 kDa) Some of them were detected by Ndh antibodies and some by mass spectrometry Similarly, using CN ⁄ PAGE, BN ⁄ PAGE, and Tricine ... types of plastids The Ndh complex associates in homodimers and dissociates in membrane and soluble subcomplexes; isolation of the Ndh complex by BN / PAGE and Tricine / PAGE Intact MS and BS...

Ngày tải lên: 23/03/2014, 13:20

... glycoforms, suggesting the presence of alternate sialylated structures In this study we describe the identification and structural analysis of a Sial-lNnT unit in H influenzae LPS MATERIALS AND ... acquired with a NOE mixing time of 800 ms, spin lock time of 80 ms, and 20480 transients for a duration of 21 h Electrophoretic analysis of LPS LPS was prepared and analysed by tricine-SDS/PAGE as described ... excitation of H-1 H-resonance of the GlcNAc residue in the TOCSY step and of H-3/H-4 1H-resonance of the GlcNAc residue in the NOESY step (A) The assignments of the 1H-resonances of the Gal II...

Ngày tải lên: 23/03/2014, 21:21

... 30 s, and 68 °C for min, yielding a single band of predicted size The DNA band was digested with NdeI and XhoI, and cloned into the NdeI and XhoI sites of pET22b The H151A mutant protein of SMC ... template, 15 pmol of the primers (VS and MA, MS and VA), mM MgSO4 and 0.2 mM dNTP mixture in a 50-lL solution at 94 °C for followed by 30 cycles of 94 °C for 15 s, 50 °C for 30 s, and 68 °C for The ... Millipore), and the internal amino-acid sequence was determined by sequencing the N-terminal part of a peptide fragment obtained by tryptic digestion of the protein Cloning and sequencing of the insecticidal...

Ngày tải lên: 30/03/2014, 13:20

... occurrence of mitochondrial swelling, a marker of permeability transition The duration of D and R phases was 1.05 and 0.77 s, respectively The rate of fluorescence changes in D and R phases was 15 and ... changes and NAD(P)H oxidation (A) NAD(P)H and TMRM images captured at the start and end of the illumination period Bar is 10 lm (B) NAD(P)H and TMRM fluorescence of 15 mitochondrial regions of the ... focus drift of mitochondria through the stack of images However, owing to the relatively short duration of sessions and linear extension of mitochondrial filaments, the number of cases of exclusion...

Ngày tải lên: 30/03/2014, 16:20

... particle sizes of cap and stipe of 54.77 lm and 40.90 lm, respectively Shear pulverized powders were then ground and sheared by the strong force between the lapping wheel and rail of a YSC-701 ... calculated as the ratio of mass of the powder and the volume occupied in the cylinder (Bai and Li, 2006) 2.4 Determination of the angles of repose and slide The angle of repose (h) was defined ... of cap and stipe powders, especially the contents of protein and SDF 3.6 Protein and polysaccharide solubility The solubility of protein and polysaccharide of the powders as a function of soaking...

Ngày tải lên: 28/06/2014, 11:20

... Synthesis and Characterization of BiTaO4 Log frequency (Hz) Figure 8: Imaginary part of impedance as a function of frequency for BiTaO4 at various temperatures Figure shows the plots of real part of ... conduction of 1.0408 eV over the temperature range of 550oC to 850oC The BiTaO4 exhibited high εr, low tan δ and near zero TCC with value of 47–48, 0.0122 and 0.00022, respectively Synthesis and Characterization ... plots of BiTaO4 at temperature range of 550oC to 850oC Synthesis and Characterization of BiTaO4 58 The electric modulus is proportional to C–1, C being the capacitance The peak heights of the...

Ngày tải lên: 07/08/2014, 14:20

... mechanism of conversion of aldehydes to carboxylic acid by ALDH3A1 in the presence of NAD(P)+ and water Important aldehyde dehydrogenase family members Structural, kinetic and knockout studies of several ... because of you To my dear uncle and my aunt Khem Kandel and Laxmi Kandel: your support and friendship has been such a help during this time Lastly, to my sweetheart Kriti Acharya, your love and support ... Figure Catalysis of benzaldehyde and para–nitrophenylacetate by ALDH3A1 Figure showing the reaction mechanisms of dehydrogenase and esterase assay catalyzed by ALDH3A1 The standard condition...

Ngày tải lên: 24/08/2014, 09:51

... encouragements and understanding during past years VI Summary This thesis research dealt with the synthesis and characterization of cobalt ferrite (CoFe2O4) powdered materials, and studied the influences of ... formation of carbon nanostructures, Solid State Phenomena, 111 (2006) 183 X List of Tables Table 1.1 Crystal types of ferrites Table 1.2 Ion distribution and net moment per molecule of CoFe2O4 and ... loops of CoFe2O4 powders prepared by co-precipitation at 100oC with the feeding rate of 9.38x10-5 mol/min and [Me]/[OH]=0.045 before and after size selection 61 Figure 3.19 TEM images of CoFe2O4...

Ngày tải lên: 11/09/2015, 09:10