synthesis and subsequent reactions of sulfonic acid esters of cellulose

... Influence of diabetes and hyperglycaemia on infectious disease hospitalisation and outcome Diabetologia 2007, 50:549-554 Christiansen C, Toft P, Jorgensen HS, Andersen SK, Tonnesen E: Hyperglycaemia and ... root of hospital acquired hyperglycaemia and in the long term lead to development of diabetes Although the incidence of hospital acquired hyperglycaemia differed between the three subgroups of ... the cut-off value in the Recommendations of the American Heart Association [35] and the trigger for initiation of insulin treatment for ICU patients recommended by the American College of Endocrinology...

Ngày tải lên: 25/10/2012, 10:02

... using the purified recombinant protein, the conversion of reagents and products of the exopeptidasecatalyzed hydrolysis of Met1 and cyclization of Gln1 to pyroglutamyl were monitored at different ... first h of the reaction Guanidinium chloride concentration pH 6.2 7.2 8.0 Fig Comparison of the hydrolysis reaction as a function of denaturing agent and pH (A), (B) and (C): (d), (s) and (.) ... to 2.5, 8.0 and 11.5 and the samples were incubated at 37 °C, 50 °C and 70 °C Aliquots were taken at different time-points from each sample and analyzed by MALDI-TOF MS The addition of the protease...

Ngày tải lên: 19/02/2014, 12:20

... phosphoric acid and chromic acid at 60 1C for 12 h During the second step, the samples rinsed in distilled water and oxalic acid were anodized again in 0.3 M oxalic acid (40 V, 16 1C, 10 h and Al ... distilled water and immersed in 5% phosphoric acid for about 30 at room temperature to adjust the pore diameter and remove the barrier layer at the bottom of nanoholes 2.2 Synthesis of SiC nanowires ... reveals that large quantities of randomly distributed wire-like products have been obtained The nanowires are of uniform diameter of about 50 nm and lengths up to tens of micrometers In addition,...

Ngày tải lên: 16/03/2014, 15:21

... extraction of DNA Extracted DNA was analysed by PAGE and ethidium bromide staining Preparation and use of antibodies A cDNA sequence encoding a 30-kDa-fragment (aminoacid residues 278–561) of hCdc6p ... end of mitosis and during the early G1 phase (12–14 h) of the next cycle (Fig 2A) Cytoplasmic and chromatin extracts were immunoprecipitated with specific antibodies and transferred to nitrocellulose ... the phosphorylated form of hCdc6p However, more importantly in the present context, we note that the synthesis of hCdc6p continues through most of the cell cycle Synthesis of hCdc6p during G1 phase...

Ngày tải lên: 17/03/2014, 23:20

... 2q cations occupy interstrand regions 4y of the W6 O 20 chains and exhibit strong hydrogen bond network to terminal and bridging oxo groups of the anionic 4y chains of W6 O 20 X Crystal data ... indicating the release of en molecules Ž calc, 8.0% The infrared spectra of present the following information: strong absorption bands at 935 and 975 cmy1 are ascribed to Õ ŽW s O., and the features ... associated with Õ ŽO–W–O modes In addition, absorption bands at 1480 and 1624 cmy1 , and a broad band centred at 3400 cmy1 suggest the presence of en species By replacing en with other organodiamines...

Ngày tải lên: 19/03/2014, 16:48

... evidence of the solubility limits of Sn4þ in the hematite structure and of Fe3þ in SnO2 are discussed the compositional uniformity The determined average values of x; for the analyzed series of mixed ... 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, ... shape and the disappearance of magnetic hyperfine structure as tin content in the samples M Sorescu et al / Journal of Physics and Chemistry of Solids 65 (2004) 1021–1029 Fig TEM image (a) and the...

Ngày tải lên: 19/03/2014, 16:48

... ratio) The straight and parallel stripes (referred to Figs 4b and 4c) on the surface of the rods and hollow tubes may result from the aggregates of the smaller and finer nanorods of ∼10 nm in diameter ... rods and hollow tubes, consisting of aggregates of nanorods of ∼10 nm in diameter The nanocrystalline TiO2 thus prepared appears to have an engraved surface morphology and consists mainly of the ... Journal of Colloid and Interface Science 316 (2007) 160–167 anatase to rutile and of brookite to rutile not take place reversibly [24] It is generally claimed that the sol–gel synthesis of ceramic...

Ngày tải lên: 20/03/2014, 13:07

... and the intensity of this peak increases relative to that of UV emission as the length of nanorods increases A similar PL pattern with two emission maxima, yet at much lower energies of 2.8 and ... band gap due to impurities.22b In light of these assignments, we suggest that the UV emission of nanorod samples in this work might correspond to the band-toband transition The blue emission of ... COMMUNICATIONS Comparing the intensities of the (010) and (014) peaks of the sample with those of the bulk W18O49, it was found that the relative intensity of (010) has been dramatically increased...

Ngày tải lên: 20/03/2014, 13:08

... 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 ... 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 FEBS ... modes of the backbone carbonyl bonds in the protein The positions of absorbance bands are dependent on secondary structure and therefore can be used to measure the amount of different types of secondary...

Ngày tải lên: 23/03/2014, 10:21

... This synthesis in and of itself is a significant achievement in lieu of the complexity and number of post-translationally modified amino acids included However, our synthetic efforts and subsequent ... between GNH3 of GalNAc and GH1 of Gal, which is labeled in bold The amino acids Gly6, Thr10 and Pro13 are represented by 6G, 10T and 13P Ó FEBS 2004 Glycopeptide tx5a synthesis and NMR analysis ... excess of amino acid derivatives were used in the coupling reactions with the exception of per- Scheme Sequence of addition of amino acid derivatives during the solid-phase glycopeptide synthesis...

Ngày tải lên: 23/03/2014, 13:20

... and 18% for x = 0.12 and 0.14, respectively Finally, the thermal conductivity (κ) of La(Fe1-xSix)13 (x = 0.12, 0.14 and 0.15) compounds is shown in Fig For general, the thermal conductivity of ... diffraction patterns of La(Fe1-xSix)13 compounds Fig shows the XRD patterns of the La(Fe1-xSix)13 (x = 0.12, 0.14 and 0.15) compounds X-ray diffraction confirms that the solid solution of La(Fe1-xSix)13 ... Temperature dependence of the thermopower of La(Fe1-xSix)13 compounds Fig shows the temperature dependence of the thermopower (α) in the La(Fe1-xSix)13 (x = 0.12, 0.14 and 0.15) compounds All...

Ngày tải lên: 28/03/2014, 13:20

... Thus the control of structural type and composition of bimetallic nanoparticles comprised of Ag and Au have been a subject of considerable interest; and the developed of simple and versatile methods ... the scattering coefficients an and bn, and are function of particle radius, and light wavelength λ (in terms of the Ricatti-Bessel functions) As the absorption band of noble metal nanoparticles ... frequency and intensity of SPR band depend on the size, shape, structure and composition [39,40,45] of the metal nanoparticles While the techniques like TEM, HREM reveal the exact size and shape of...

Ngày tải lên: 04/06/2014, 15:20

... measurements and data analysis, and drafted the manuscript DG and DX made the conception and design of the manuscript ZZ2 carried out the XPS measurements and data analysis JLZ and ZZ1 participated ... http://www.nanoscalereslett.com/content/6/1/587 Page of Figure TEM and HRTEM images of Zn0.995Zr0.005O Nps (a) The representative TEM image of Zn0.995Zr0.005O and the inset is the SAED pattern (b) The HRTEM image of Zn0.995Zr0.005O ... peaks of Zr4+ ions [27] The result of Zn 2p core-level XPS spectrum for ZnO (Figure 3(b)) shows that the doublet spectral lines of Zn 2p are observed at the binding energy of 1022 eV (Zn 2p3/2) and...

Ngày tải lên: 20/06/2014, 22:20

... (Hc) of 355.8 and 93.6 Oe, respectively, for NCs and PSC, saturation magnetizations (Ms) of 125.7 and 162.5 emu/g, respectively, for NCs and PSC, and remnant magnetization (M r ) up to 46.6, and ... http://www.nanoscalereslett.com/content/6/1/285 Page of published SY and YQ: partly carried out the TEM and HRTEM experiments, as well as drafted the manuscript XL, LS, and HL: conceived of the study, and participated in its design and coordination ... out the experimental and numerical calculations, as well as drafted the manuscript VSM and PPMS: performed an analysis and interpretation of results, and gave final approval of the version to be...

Ngày tải lên: 21/06/2014, 04:20

... 120, and 180 min, respectively Fig a The decomposition of the PL spectrum of the SiNWs treated with HF and the PL intensity varieties of the elementary bands with b H2O2 concentrations and c ... electrons from Si nearby and are deoxidized into Ag again The Si atoms around are oxidized and dissolved, leading to the etching of the silicon surface and the formation of the vertical SiNW arrays ... tips of the SiNWs and the smaller AgNPs appear These newly formed AgNPs open 123 new etching pathways on the SiNWs and facilitate the formation of the nanopores Furthermore, the nucleation of the...

Ngày tải lên: 21/06/2014, 08:20

Ngày tải lên: 21/06/2014, 08:20

... character with lattice spacing of 0.252 nm and 0.295 nm, which can be indexed to the (311) and (220) planes of cubic c-Fe2O3 And the HRTEM image take from the tube wall of the selected area marked ... (ATR-FTIR) spectra of starting materials and c-Fe2O3 SNTs are shown in Fig 2b The adsorption bands at ca 560 cm-1 related to the lattice vibrations of the FeO6 octahedral [22] The broad bands of as-prepared ... scale bar is 10 nm) images of as-prepared c-Fe2O3 SNTs incorporated sulfate ions in the preparing process, corresponding to the one band of the v1 mode and two bands of the v3 mode (C3v symmetry),...

Ngày tải lên: 21/06/2014, 17:20

... typical synthesis, 1.6 g (6 mmol) of FeCl3Á6H2O and 0.7 g of (3 mmol) CoCl2Á6H2O were dissolved in the solvent composed of 80 ml of water and 40 ml of ethanol After that, 7.3 g (24 mmol) of sodium ... temperature range of 10–330 K with an applied field of 100 Oe Experimental Results and Discussion Synthesis of CoFe2O4 Spherical Nanoparticles The process for synthesizing nearly monodisperse CoFe2O4 with ... between -NH2 and -OH on the surface of CoFe2O4 The peak at 3,007 cm-1 is assigned to the Fig TEM image of the as-synthesized CoFe2O4 nanoparticles 1041 Fig FTIR spectra of the as-synthesized CoFe2O4...

Ngày tải lên: 21/06/2014, 18:20

... method of functionalizing QDs is simple and can avoid complicated synthesis and characterization of the intermediate products of QDs, when reactions are performed on the QD surfaces A number of reports ... microlitres (10–50 lL) of these solutions were added to the different sets of mL solution of CdTe QDs In a typical synthesis of CdTe–Dendrimer conjugate, mL aqueous solution of CdTe NPs (5 10-6 ... nm) determined from the correlation of particle size and optical band gap Further, average size and size distribution of CdTe QDs obtained from UV spectra and TEM image were also supported by...

Ngày tải lên: 21/06/2014, 20:20

... (a), (c) and (e) are top views of samples 1, and respectively; (b), (d) and (f) are side views of the samples 1, and respectively are much more than those in Fig 3a A certain amount of Ni nanoparticles ... formation of nanotubes and nanowires Figure illustrates schematic diagrams of the electrodeposition process for Ni nanotubes and nanowires Figure 4a provides a clear understanding of the growth ... of Ni nanowires and nanotubes for samples under different conditions: (a) sample 1, (b) sample and (c) sample Fig a Schematic diagram of the growth process of nanotubes; b Schematic diagram of...

Ngày tải lên: 21/06/2014, 20:20