PubMed Health⌕ Search

Biomedical subjects

GA Morris

Publications and source records attributed to GA Morris.

3 recordsLinked to original sources
PubMed1998

A three-dimensional DOSY-HMQC experiment for the high-resolution analysis of complex mixtures

A three-dimensional experiment is described in which NMR signals are separated according to their proton chemical shift, 13C chemical shift, and diffusion coefficient. The sequence is built up from a stimulated echo sequence with bipolar field gradient pulses and a conventional decoupled HMQC sequence. Results are presented for a model mixture of quinine, camphene, and geraniol in deuteriomethanol. Copyright 1998 Academic Press.

Journal Article↗
PubMed1998

Automated shimming with normal spectrometer hardware: 3D profile edge shimming

A novel method is proposed for automated magnetic field homogeneity adjustment in high-resolution NMR. The method uses measurements of the edge frequencies of slice profiles recorded under static gradients to obtain three-dimensional magnetic field maps and does not require significant extra spectrometer hardware. Results are presented for the "cold" shimming of 5- and 10-mm-diameter probes in a 400-MHz narrow bore magnet. Copyright 1998 Academic Press.

Journal Article↗