scholarly journals In Situ Structural Characterization of a Recombinant Protein in Native Escherichia coli Membranes with Solid-State Magic-Angle-Spinning NMR

2011 ◽  
Vol 133 (32) ◽  
pp. 12370-12373 ◽  
Author(s):  
Riqiang Fu ◽  
Xingsheng Wang ◽  
Conggang Li ◽  
Adriana N. Santiago-Miranda ◽  
Gary J. Pielak ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Solid State ◽  
Recombinant Protein ◽  
Structural Characterization ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Angle Spinning

Characterization of metallurgical-grade aluminas and their precursors by 27Al NMR and XRD

2007 ◽  
Vol 85 (10) ◽  
pp. 889-897 ◽  
Author(s):  
Linus M Perander ◽  
Zoran D Zujovic ◽  
Tania Groutso ◽  
Margaret M Hyland ◽  
Mark E Smith ◽  
...  
Keyword(s):  
Solid State ◽  
High Field ◽  
Structural Complexity ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Nmr Studies ◽  
Transition Alumina ◽  
Angle Spinning ◽  
Alpha Alumina

The structure of metallurgical- or smelter-grade aluminas (MGAs) is complex and poorly understood. Ultra-high-field solid-state 27Al NMR results on industrial as well as on laboratory-prepared aluminas are discussed in relation to XRD results. It is demonstrated that high-field NMR can effectively be used to quantify the proportion of the thermodynamically stable alpha-alumina phase in these materials. The results demonstrate that 27Al NMR is a vital adjunct to XRD methods to quantify the transition alumina phases that invariably dominate the MGAs. The nature of the disorder in these materials, determined by 27Al NMR, is also compared with literature data, such as XANES and EXAFS studies, on typical laboratory-prepared materials. The utility of 27Al NMR studies to provide new insight into the structural complexity of metallurgical aluminas is shown.Key words: solid-state magic-angle-spinning NMR, metallurgical-grade alumina, transition alumina, gamma-alumina, coordination number.

Characterization of Polymer Compatibility by1H Dipolar Filter Solid-State NMR under Fast Magic Angle Spinning

2007 ◽  
Vol 40 (25) ◽  
pp. 9018-9025 ◽  
Author(s):  
Xiaoliang Wang ◽  
Qiang Gu ◽  
Qing Sun ◽  
Dongshan Zhou ◽  
Pingchuan Sun ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Polymer Compatibility ◽  
Angle Spinning ◽  
Fast Magic Angle Spinning
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