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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5142
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pubmed:dateCreated |
1994-1-21
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pubmed:abstractText |
Intermolecular multiple-quantum coherences between bulk water and a glycoprotein fragment at modest concentration (20 mM) have been experimentally produced and detected, although such coherences are inconceivable in the normal theoretical framework of nuclear magnetic resonance. A density matrix treatment explains these results by including the long-range dipolar interaction between spins and by discarding the high-temperature approximation. These results imply that peak intensities (critical for structural determinations) can be distorted in many gradient experiments, and show that magic-angle gradients provide substantial improvements with reduced gradient strengths. They also suggest methods for contrast enhancement in magnetic resonance imaging.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0036-8075
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
24
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pubmed:volume |
262
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2005-9
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading | |
pubmed:year |
1993
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pubmed:articleTitle |
Generation of impossible cross-peaks between bulk water and biomolecules in solution NMR.
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pubmed:affiliation |
Department of Chemistry, Princeton University, NJ 08544-1009.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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