scholarly journals A General Model to Calculate the Spin–Lattice Relaxation Rate ( R1 ) of Blood, Accounting for Hematocrit, Oxygen Saturation, Oxygen Partial Pressure, and Magnetic Field Strength Under Hyperoxic Conditions

2021 ◽  
Author(s):  
Emma Bluemke ◽  
Eleanor Stride ◽  
Daniel P. Bulte
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Oxygen Partial Pressure ◽  
Oxygen Saturation ◽  
Partial Pressure ◽  
Relaxation Rate ◽  
General Model ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Spin Lattice

scholarly journals Effect of magnetic field strength on the linewidth and spin-lattice relaxation time of the thiocyanate carbon of cyanylated β-lactoglobulin B: optimization of the experimental parameters for observing thiocyanate carbons in proteins

1995 ◽  
Vol 306 (2) ◽  
pp. 531-535
Author(s):  
J P G Malthouse ◽  
P Phelan
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Chemical Shift Anisotropy ◽  
Relaxation Times ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Spin Lattice Relaxation Time ◽  
Spin Lattice ◽  
Field Strengths

The linewidths and spin-lattice relaxation times of the 13C-n.m.r. signal at 109.7 p.p.m. due to the thiocyanate carbon of intact [cyanato-13C]cyanylated-beta-lactoglobulin-B have been determined at magnetic field strengths of 1.88, 6.34 and 11.74 T as well as the spin-lattice relaxation times of its backbone alpha-carbon atoms. The linewidths were directly proportional to the square of the magnetic field strength and we conclude that, at magnetic field strengths of 6.34 T or above, more than 70% of the linewidth will be determined by chemical-shift anisotropy. We estimate that the spin-lattice relaxation time resulting from the chemical-shift anisotropy of the thiocyanate carbon is 1.52 +/- 0.1 s and we conclude that for magnetic field strengths of 6.34 T and above the observed spin-lattice relaxation time of the thiocyanate carbon will be essentially independent of magnetic field strength. Using the rigid-rotor model we obtain estimates of the rotational correlation time of [cyanato-13C]cyanylated-beta-lactoglobulin-B and of the chemical-shift anisotropy shielding tensor of its thiocyanate carbon. We have calculated the linewidths and spin-lattice relaxation times of thiocyanate carbons at magnetic field strengths of 1.88-14.1 T in proteins with M(r) values in the range 10,000-400,000. The effects of magnetic field strength on the resolution and signal-to-noise ratios of the signals due to thiocyanate carbons attached to proteins of M(r) greater than 10,000 are discussed.

scholarly journals 19F spin–lattice relaxation of perfluoropolyethers: Dependence on temperature and magnetic field strength (7.0–14.1T)

2014 ◽  
Vol 242 ◽  
pp. 18-22 ◽  
Author(s):  
Deepak K. Kadayakkara ◽  
Krishnan Damodaran ◽  
T. Kevin Hitchens ◽  
Jeff W.M. Bulte ◽  
Eric T. Ahrens
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Spin Lattice

31P Spin-Lattice Relaxation Times and Resonance Linewidths of Rat Tissuein Vivo: Dependence upon the Static Magnetic Field Strength

1985 ◽  
Vol 2 (4) ◽  
pp. 410-417 ◽  
Author(s):  
Jeffrey L. Evelhoch ◽  
Coleen S. Ewy ◽  
Barry A. Siegfried ◽  
Joseph J. H. Ackerman ◽  
David W. Rice ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Static Magnetic Field ◽  
Relaxation Times ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Spin Lattice

The NMR Spin Lattice Relaxation Rate of Hydrated Sands as a Function of Magnetic Field

2008 ◽  
Author(s):  
Joseph P. Hornak ◽  
Christina L. Bray ◽  
Marcus J. Cox ◽  
Robert G. Bryant ◽  
Yana Goddard ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Relaxation Rate ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Spin Lattice Relaxation Rate ◽  
Spin Lattice ◽  
Lattice Relaxation Rate
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