Stejskal

V. Kubelka, P. Kozak, and M. Stejskal, VSCHT, Prague, Czechoslovakia. 

The distributions are very narrow. This is in accordance with similar theoretical results by Stejskal and Kratochvil (3. ... 

J. E. Stejskal, J. E. Tanner 1965, (Spin echoes in the presence of a time-de-pendent field gradient),/. Chem. Phys. 42, 1. 

It has been known for 40 years, since the initial PGSE experiment of Stejskal and Tanner [20], that NMR is an excellent tool for measuring the statistical displacements of molecules with time, usually called diffusion. The exponential attenuation a of the PGSE signal as a function of time between the PGSE pulses is given by [21]... 

Modem NMR diffusion measurements are all based on the Stejskal-Tanner (S-T) pulsed field gradient spin-echo experiment [174] in which a gradient pulse is... 

Pulsed field gradient NMR (PFG-NMR) spectroscopy has been successfully used for probing interactions in several research fields.44-53 The method was developed by Stejskal and Tanner more than 40 years ago54 and allows the measurement of self-diffusion coefficient, D, which is defined as the diffusion coefficient in absence of chemical potential gradient. 

Several NMR pulse sequences have been developed for measuring the diffusion coefficient. The most successful and currently used experiment is the modified spin-echo experiment (PGSE) proposed by Stejskal in 1967.62 As the echo signal is due to the transversal components of magnetic moments, the echo attenuation normalized for the attenuation due to relaxation can be written as63 ... 

E. O. Stejskal and J. D. Memory, High Resolution NMR in the Solid State. Oxford University Press, New York, 1994. 

The combined CP/MAS experiment was first applied by Schaefer and Stejskal (11, 12) and has since found wide application in a number of areas. Figure 3 shows the effect of spinning and the kind of resolution which may be obtained from very crystalline materials (13). Spectra with this degree of resolution obviously contain substantial chemical information. 

Schaefer J, Stejskal EO, Garbow J, McKay DB (1984) J Magn Reson 59 150... 

Primates offer all of the possible dosing routes available in humans, but body size often limits dosing volumes. If volumes for subcutaneous or intramuscular injections exceed those suggested above, enzyme elevations [particularly alanine aminotransferase (ALT) and aspartate aminotransferase (AST)] are frequently observed (unpublished results). Continuous infusion techniques in alert animals are available in some laboratories either through use of programmable backpack pumps or jacket-and-tether systems (Perkin and Stejskal, 1994). 

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