Linked Life Data

11910105

Source:http://linkedlifedata.com/resource/pubmed/id/11910105

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5563
pubmed:dateCreated
2002-3-22
pubmed:abstractText
We obtained nuclear magnetic resonance (NMR) spectra of liquids in fields of a few microtesla, using prepolarization in fields of a few millitesla and detection with a dc superconducting quantum interference device (SQUID). Because the sensitivity of the SQUID is frequency independent, we enhanced both signal-to-noise ratio and spectral resolution by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. In the absence of chemical shifts, proton-phosphorous scalar (J) couplings have been detected, indicating the presence of specific covalent bonds. This observation opens the possibility for "pure J spectroscopy" as a diagnostic tool for the detection of molecules in low magnetic fields.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1095-9203
pubmed:author
pubmed:issnType
Electronic
pubmed:day
22
pubmed:volume
295
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2247-9
pubmed:dateRevised
2007-3-19
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Liquid-state NMR and scalar couplings in microtesla magnetic fields.
pubmed:affiliation
Department of Physics, University of California, Berkeley, CA 94720, USA. rmcderm@socrates.berkeley.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't