Polypropylene–clay nanocomposite structure probed by H NMR relaxometry
نویسندگان
چکیده
منابع مشابه
Field-cycling NMR relaxometry with spatial selection.
Fast field-cycling MRI offers access to sources of endogenous information not available from conventional fixed-field imagers. One example is the T(1) dispersion curve: a plot of T(1) versus field strength. We present a pulse sequence that combines saturation-recovery/inversion-recovery T(1) determination with field cycling and point-resolved spectroscopy localization, enabling the measurement ...
متن کاملMembrane protein topology probed by (1)H spin diffusion from lipids using solid-state NMR spectroscopy.
We describe a two-dimensional solid-state NMR technique to investigate membrane protein topology under magic-angle spinning conditions. The experiment detects the rate of (1)H spin diffusion from the mobile lipids to the rigid protein. While spin diffusion within the rigid protein is fast, magnetization transfer in the mobile lipids is an inefficient and slow process. Qualitative analysis of (1...
متن کاملStructure of Rare-Earth Aluminosilicate Glasses Probed by Solid-State NMR Spectroscopy and Quantum Chemical Calculations
Results presented in this thesis are based on the following publications, which are referred to by the corresponding roman numbers I-IV: Reprints were made with the permission from the publishers.
متن کاملLocal and global structure of the monomeric subunit of the potassium channel KcsA probed by NMR.
KcsA is a homotetrameric 68-kDa membrane-associated potassium channel which selectively gates the flux of potassium ions across the membrane. The channel is known to undergo a pH-dependent open-to-closed transition. Here we describe an NMR study of the monomeric subunit of the channel (KcsAM), solubilized in SDS micelles. Chemical shift, solvent exchange, backbone 15N relaxation and residual di...
متن کامل3D structure of amyloid protofilaments of beta2-microglobulin fragment probed by solid-state NMR.
Understanding the structure and formation of amyloid fibrils, the filamentous aggregates of proteins and peptides, is crucial in preventing diseases caused by their deposition and, moreover, for obtaining further insight into the mechanism of protein folding and misfolding. We have combined solid-state NMR, x-ray fiber diffraction, and atomic force microscopy to reveal the 3D structure of amylo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Polymer Testing
سال: 2007
ISSN: 0142-9418
DOI: 10.1016/j.polymertesting.2007.07.012