Internuclear Distances from 1H T1 Relaxation Measurements in Solution

2005 ◽  
pp. 97-121
Keyword(s):  
T1 Relaxation ◽  
Relaxation Measurements ◽  
Internuclear Distances

scholarly journals 23Na NMR T1 relaxation measurements as a probe for diffusion and dynamics of sodium ions in salt–glycerol mixtures

2021 ◽  
Vol 154 (22) ◽  
pp. 224501
Author(s):  
Carmine D’Agostino ◽  
Stefan J. Davis ◽  
Andrew P. Abbott
Keyword(s):  
Sodium Ions ◽  
T1 Relaxation ◽  
Relaxation Measurements ◽  
23Na Nmr

Investigation of the internal rotation of methyl groups by T1 relaxation measurements

1978 ◽  
Vol 31 (1) ◽  
pp. 33-40 ◽  
Author(s):  
E Haslinger ◽  
R.M Lynden-Bell
Keyword(s):  
Internal Rotation ◽  
Methyl Groups ◽  
T1 Relaxation ◽  
Relaxation Measurements

scholarly journals Multiblock Analysis Applied to TD-NMR of Butters and Related Products

2020 ◽  
Vol 10 (15) ◽  
pp. 5317
Author(s):  
Jean-Michel Roger ◽  
Silvia Mas Garcia ◽  
Mireille Cambert ◽  
Corinne Rondeau-Mouro
Keyword(s):  
Solid Phase ◽  
Fat Content ◽  
Prediction Errors ◽  
Chemometric Methods ◽  
Covariance Selection ◽  
T1 Relaxation ◽  
Repeatability Error ◽  
Measurement Protocol ◽  
Relaxation Measurements ◽  
Better Than

This work presents a novel and rapid approach to predict fat content in butter products based on nuclear magnetic resonance longitudinal (T1) relaxation measurements and multi-block chemometric methods. The potential of using simultaneously liquid (T1L) and solid phase (T1S) signals of fifty samples of margarine, butter and concentrated fat by Sequential and Orthogonalized Partial Least Squares (SO-PLS) and Sequential and Orthogonalized Selective Covariance Selection (SO-CovSel) methods was investigated. The two signals (T1L and T1S) were also used separately with PLS and CovSel regressions. The models were compared in term of prediction errors (RMSEP) and repeatability error (σrep). The results obtained from liquid phase (RMSEP ≈ 1.33% and σrep≈ 0.73%) are better than those obtained with solid phase (RMSEP ≈ 5.27% and σrep≈ 0.69%). Multiblock methodologies present better performance (RMSEP ≈ 1.00% and σrep≈ 0.47%) and illustrate their power in the quantitative analysis of butter products. Moreover, SO-Covsel results allow for proposing a measurement protocol based on a limited number of NMR acquisitions, which opens a new way to quantify fat content in butter products with reduced analysis times.

Spatially resolved T1 relaxation measurements in reservoir cores

1991 ◽  
Vol 9 (5) ◽  
pp. 815-819 ◽  
Author(s):  
J.J. Attard ◽  
T.A. Carpenter ◽  
L.D. Hall ◽  
S. Davies ◽  
M.J. Taylor ◽  
...  
Keyword(s):  
Spatially Resolved ◽  
T1 Relaxation ◽  
Relaxation Measurements

scholarly journals 441 EFFECT OF B0 MAGNETIC FIELD CHANGES ON QUANTITATIVE T1 RELAXATION MEASUREMENTS

2010 ◽  
Vol 18 ◽  
pp. S198
Author(s):  
D.R. Pedersen ◽  
D.R. Thedens ◽  
N.F. Klocke ◽  
T.E. Baer ◽  
J.A. Martin
Keyword(s):  
Magnetic Field ◽  
T1 Relaxation ◽  
Relaxation Measurements

MÖSSBAUER RELAXATION MEASUREMENTS ON Yb IN LaBel3 : INFLUENCE OF KONDO EFFECT AND SUPERCONDUCTIVITY

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-729-C8-730 ◽  
Author(s):  
P. Bonville ◽  
P. Imbert ◽  
G. Jéhanno ◽  
F. Gonzalez-Jimenez
Keyword(s):  
Kondo Effect ◽  
Relaxation Measurements
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