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991.
Thomas Osborne Lafayette Mendel und Isaak Harris 《Fresenius' Journal of Analytical Chemistry》1907,46(4):213-222
Ohne ZusammenfassungNach dem American Journal of Physiology Vol. XIV, No. III bearbeitet und übersetzt von Dr. Griessmayer. 相似文献
992.
993.
J R Allen C R Harris S J Danishefsky 《Journal of the American Chemical Society》2001,123(9):1890-1897
A novel preparation of nonnatural glycoamino acids starting from n-pentenyl glycosides is described. The approach involves a Horner-Emmons olefination with a suitably protected glycine-derived phosphonate, followed by catalytic asymmetric hydrogenation, which proceeds with excellent diastereomeric selectivity. The synthetic methodology was useful for the preparation of glycoamino acids containing the Tn antigen, the MBr1 antigen (Globo-H), the Le(y) antigen, and lactose. These glycoamino acids can also serve as units for peptide synthesis. The synthesis of polyvalent glycopeptides containing three different antitumor antigens is described (28 and 29), and these have been prepared for conjugation to carrier protein in order to access the immunogenicity for tumor immunotherapy applications. 相似文献
994.
Giang Huong Nguyen Thomas S. Dexheimer Andrew S. Rosenthal Wai Kit Chu Dharmendra Kumar Singh Georgina Mosedale Csanád Z. Bachrati Lena Schultz Masaaki Sakurai Pavel Savitsky Mika Abu Peter J. McHugh Vilhelm A. Bohr Curtis C. Harris Ajit Jadhav Opher Gileadi David J. Maloney Anton Simeonov Ian D. Hickson 《Chemistry & biology》2013,20(1):55-62
995.
Hugh D. Burrows Carlos F. G. C. Geraldes Teresa J. T. Pinheiro Robin K. Harris Angelika Sebald 《Liquid crystals》2013,40(6-7):853-860
Abstract 207Pb N.M.R. data are reported for a number of even chain length lead(II) carboxylates (soaps) at various temperatures. At room temperature, the solid lead(II) decanoate and tetradecanoate show similar spectra, with a single metal ion site, and modest shielding anisotropy. As the temperature is increased, the soaps (hexanoate to octadecanoate) all form a highly ordered smectic phase, which gives a very broad 207Pb signal of linewidth comparable to that of the solid phase. At higher temperatures, the hexanoate to dodecanoate soaps form a lamellar L α (smectic A) phase, whilst the longer chain length carboxylates melt directly to the liquid phase. Both the lamellar L α and liquid phase give fairly sharp, isotropic signals, whose chemical shifts and linewidths are strongly temperature dependent. Possible explanations for this effect include paramagnetic contributions to the shielding tensor from low-lying electronic states of Pb(II), and contributions to the observed signal from different coordination species produced in the lead(II) carboxylate system. Although there are discrete changes in chemical shift at the phase transition, the magnitudes observed in all the phases are similar, suggesting that there are no dramatic changes in the metal coordination environment. 相似文献
996.
Thomas B. Osborne und Isaak Harris 《Fresenius' Journal of Analytical Chemistry》1910,49(3-4):142-146
Ohne ZusammenfassungNach dem Journal of Biological Chemistry Vol. III, Juli 1907, bearbeitet und übersetzt von Dr. V. Griessmayer. 相似文献
997.
A. J. Hall K. Schwertassek G. Garkuscha K. M. Markuse A. W. Ssurowaja A. P. Sakonschtschikow D. I. Galperin D. I. Tumarkin J. Barritt H. H. Bowen F. L. Goodall A. Whitehead H. R. Hirst A. T. King M. Harris A. L. Smith T. A. Schmelewa und R. Hart 《Fresenius' Journal of Analytical Chemistry》1940,120(5-6):216-220
Ohne Zusammenfassung 相似文献
998.
In this paper we introduce the crossed product construction for a discrete group action on an operator system. In analogy to the work of E. Katsoulis and C. Ramsey, we describe three canonical crossed products arising from such a dynamical system. We describe how these crossed product constructions behave under G-equivariant maps, tensor products, and the canonical -covers. We show that hyperrigidity is preserved under two of the three crossed products. Finally, using A. Kavruk's notion of an operator system that detects -nuclearity, we give a negative answer to a question on operator algebra crossed products posed by Katsoulis and Ramsey. 相似文献
999.
Abdolraouf Samadi-Maybodi Robin K. Harris S. Naser Azizi Alan M. Kenwright 《Magnetic resonance in chemistry : MRC》2001,39(8):443-446
Silicon-29 NMR spectra were obtained for more than 20 aqueous alkaline silicate solutions containing methanol. A signal assigned to CH3OSi(OH)3 or one of its deprotonated congeners was studied in detail for the first time for the solution conditions involved. Its appearance was monitored as a function of the solution compositions. The pseudo-equilibrium constant for its formation is of the order of 0.65. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
1000.