The thermodynamics and kinetics of the diethylbenzene-benzene transalkylation have been studied in liquid phase over faujasite Y in a batch reactor. The reactions were conducted at several temperatures between 423 and 513 K. The main product of the reaction was ethylbenzene. When the molar ratio of
A study of a Cα, β-didehydroalanine homo-oligopeptide series in the solid-state by 13C cross-polarization magic angle spinning NMR
✍ Scribed by Katherine A. Henzler Wildman; Ayyalusamy Ramamoorthy; Tateaki Wakamiya; Taichi Yoshikawa; Marco Crisma; Claudio Toniolo; Fernando Formaggio
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 97 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1075-2617
- DOI
- 10.1002/psc.551
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✦ Synopsis
Abstract
The fully extended peptide conformation (2.0~5~‐helix) has been investigated for the first time in the solid‐state by ^13^C cross‐polarization magic angle spinning NMR. The compounds examined are members of a terminally protected, homo‐oligopeptide series (from monomer through hexamer) based on C^α, β^‐didehydroalanine. Copyright © 2004 European Peptide Society and John Wiley & Sons, Ltd.
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We have recorded high-resolution l3C-nmr spectra of collagen fibrils in the solid state by the cross-polarization-magic-angle-spinning (CP-MAS) method and analyzed the spectra with reference to those of collagenlike polypetides. We used two kinds of model polypeptides to obtain reference 13C chemica