Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 3 of 3 for “"RF inhomogeneity"”.
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Inherent insensitivity to RF inhomogeneity in FLASH imaging
… the past three decades. In MRI, radiofrequency (RF) field inhomogeneity is an unavoidable problem in practice and becomes severe at high magnetic fields due to the dependence of B1 on the sample. It leads to nonuniformities in image intensity and contrast, causing difficulties in quantitative …
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Methodology and applications of high resolution solid-state NMR to structure determination of proteins
… and selectively "C and '5N labeled samples is performed at magnetic fields from 11.7 to 21.1 T and spinning frequencies from 9 to 65 kHz.Dynamic Nuclear Polarization on nanocrystals of amyloidogenic peptide GNNQQNY is presented demonstrating that 'H-'H spin diffusion can efficiently transfer the …
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Sensitivity and resolution in 19F and 15N solid-state NMR: applications to pharmaceutical systems
… systems. The work highlights how for CP performed at fast MAS, there is a much greater sensitivity to the RF inhomogeneity of the probe, and how this be reduced by using ramped CP. The results showed that for routine detection of 15N it is advised to detect via routine CP, due to the more …