scholarly journals Chemical shift and magnetic susceptibility contributions to the separation of intracellular and supernatant resonances in variable angle spinning NMR spectra of erythrocyte suspensions

2004 ◽  
Vol 51 (3) ◽  
pp. 441-444 ◽  
Author(s):  
David J. Philp ◽  
William A. Bubb ◽  
Philip W. Kuchel
Keyword(s):  
Magnetic Susceptibility ◽  
Chemical Shift ◽  
Nmr Spectra ◽  
Variable Angle ◽  
Angle Spinning ◽  
Variable Angle Spinning

Correlation of Isotropic and Anisotropic Chemical Shifts in Solids by Two-Dimensional Variable-Angle-Spinning NMR

1992 ◽  
Vol 32 (2-3) ◽  
pp. 161-164 ◽  
Author(s):  
Lucio Frydman ◽  
Gerard C. Chingas ◽  
Young K. Lee ◽  
Philip J. Grandinetti ◽  
Margaret A. Eastman ◽  
...  
Keyword(s):  
Chemical Shifts ◽  
Two Dimensional ◽  
Variable Angle ◽  
Angle Spinning ◽  
Dimensional Variable ◽  
Variable Angle Spinning

11 B NMR spectra and structure of boric oxide and alkali borate glasses

1990 ◽  
Vol 429 (1876) ◽  
pp. 1-15 ◽  
Keyword(s):  
Chemical Shift ◽  
Nmr Spectra ◽  
Structural Model ◽  
Magic Angle Spinning ◽  
Boric Oxide ◽  
Magic Angle ◽  
Borate Glasses ◽  
Alkali Oxide ◽  
Alkali Borate Glasses ◽  
Angle Spinning

High-resolution 11 B magic-angle-spinning (MAS) NMR investigations of boric oxide and alkali borate glasses have been carried out. The chemical shift of the trigonal boron shows anomalous behaviour around 10 mol. % alkali oxide. In an attempt to explain this unusual feature, we have carefully examined the structural model for B 2 O 3 glass. The study suggests that around 66% of the boron atoms is likely to be present in the boroxol units, the rest being present in loose BO 3/2 units. This model is not only consistent with the earlier literature but also shows that stringent topochemical factors are involved in the formation of the tetraborate and the diborate units in alkali borate glasses. It seems plausible that the remarkable tendency of B 2 O 3 to vitrify may itself have a structural origin.

scholarly journals Modulation of cross polarization in motionally averaged solids by variable angle spinning NMR

2011 ◽  
Vol 508 (4-6) ◽  
pp. 314-319 ◽  
Author(s):  
Catalina A. Espinosa ◽  
Pierre Thureau ◽  
Rebecca A. Shapiro ◽  
Ilya M. Litvak ◽  
Rachel W. Martin
Keyword(s):  
Cross Polarization ◽  
Variable Angle ◽  
Angle Spinning ◽  
Variable Angle Spinning
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