Results 281 to 290 of about 265,344 (330)

Optical Pumping in Solid State Nuclear Magnetic Resonance

The Journal of Physical Chemistry, 1996
An important current trend in solid state nuclear magnetic resonance (NMR) is the growing exploitation of optical pumping of nuclear spin polarizations as a means of enhancing and localizing NMR signals. Recent work has been concentrated in two areas, namely optically pumped NMR in semiconductors and optical pumping of noble gases.
Robert Tycko, Jeffrey A. Reimer
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ChemInform Abstract: Solid‐State Nuclear Magnetic Resonance

ChemInform, 1998
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Nuclear Magnetic Resonance in Solid‐State Chemistry

Angewandte Chemie International Edition in English, 1972
AbstractVarious problems of solid‐state chemistry can be solved by spectroscopic investigation of the nuclear magnetic resonance (NMR and NQR methods). This progress report presents a survey of the nature of the interactions in the crystal that underlie such measurements, of the observations in the spectrum, and of the information obtainable from it ...
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Nuclear magnetic resonance imaging in the solid state

Progress in Nuclear Magnetic Resonance Spectroscopy, 1991
During the last two decades much research effort has been invested in the development of techniques for nuclear magnetic resonance (NMR) imaging. Because of the difficulties associated with imaging of solids, the majority of the research carried out to date has been directed towards the liquid state, and applications have been principally directed to ...
P. Jezzard, J.J. Attard, T.A. Carpenter, L.D. Hall   +3 more
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Solid-state tungsten-183 nuclear magnetic resonance spectroscopy

Journal of the American Chemical Society, 1986
The authors report first direct observation of the /sup 183/W NMR signals of a variety of tungsten-containing solids, using a relatively high magnetic field (8.45 T) together with the technique of magnic angle sampling spinning (MASS).
C. T. G. Knight, G. L. Turner, R. J. Kirkpatrick, Eric. Oldfield   +3 more
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Solid state 31P nuclear magnetic resonance of tricyanophosphine

Polyhedron, 1991
Abstract The high resolution 31P NMR spectrum of solid tricyanophosphine is reported. The use of magic angle sample spinning gives the chemical shift much more accurately than the earlier wideline measurement, and spinning sideband analysis gives an improved estimate of the 31P chemical shift anisotropy: −96±5 ppm.
M.A.H.A. Al-Juboori, A. Finch, P.J. Gardner, C.J. Groombridge   +3 more
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Solid state 13C nuclear magnetic resonance for polyguanidines

Polymer, 2000
Abstract The structure and variations in dynamic motions of three polyguanidines possessing different side chains were studied by 13 C CP/MAS NMR. From these results, the structures of the polyguanidines were confirmed, and the 13 C spin–lattice relaxation times in the rotating frame were measured.
A.R Lim, J.H Kim, B.M Novak
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Quadrupole Effects in Solid-State Nuclear Magnetic Resonance

1993
The applicability of nuclear magnetic resonance (NMR) spectroscopy continues to expand in physics, chemistry, material science, geology, biology, and medicine. An increasing range of NMR techniques is employed for either spectroscopic studies or imaging purposes, most becoming possible because of the high magnetic fields of superconducting magnets ...
D. Freude, J. Haase
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Solid-state nuclear magnetic resonance microscopy demonstrating human dental anatomy

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 2002
Magnetic resonance imaging has become a common diagnostic tool in medical practice. It is a common view that solid-state material lacking a sufficient amount of unpaired nuclear spins, in particular proton spins, is impossible to depict with clinically used magnetic resonance devices.
Thorsten R, Appel, Michael A, Baumann
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Solid-state nuclear magnetic resonance in the rotating tilted frame

The Journal of Chemical Physics, 2008
Recent methodological advances have made it possible to measure fine structure on the order of a few hertz in the nuclear magnetic resonance (NMR) spectra of quadrupolar nuclei in polycrystalline samples. Since quadrupolar couplings are often a significant fraction of the Zeeman coupling, a complete analysis of such experimental spectra requires a ...
Nicole M, Trease, Philip J, Grandinetti
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