Results 251 to 260 of about 340,629 (297)

Low field 11B nmr in YRh4B4

Physica B+C, 1981
Abstract An adiabatic field cycling technique is used to study the 11 B nmr in the anomalous ternary superconductor YRh 4 B 4 at fields below H c1 .
F.Y. Fradin, P.K. Tse, J.W. Downey
openaire   +1 more source

Low Field NMR Water Cut Metering

Canadian International Petroleum Conference, 2002
Abstract We have developed a new on line water cut meter using low field Nuclear Magnetic Resonance (NMR) technology. This instrument is designed for use on heavy oil systems where conventional instruments experience difficulties.
Ian Wright, Lastockin David, Allsopp Kevin, Evers-Dakers Maureen, Kantzas Apostolos   +4 more
openaire   +1 more source

Low field NMR measurements in3He-A

Physica B: Condensed Matter, 1994
Abstract We are making simultaneous measurements of the longitudinal and transverse resonances in fields of the order of 30 gauss in a parallel plate geometry, defined by mylar films 100 μm apart, so that l is well oriented perpendicular to the static magnetic field.
T.R. Mullins, V.V. Dmitriev, A.J. Armstrong, J.R. Hook, H.E. Hall   +4 more
openaire   +1 more source

Low-field and benchtop NMR

Journal of Magnetic Resonance, 2019
NMR started at low field. Important discoveries like the first observation of NMR in condensed matter, the spin echo, NMR for chemical analysis, Fourier NMR spectroscopy, 2D NMR spectroscopy and magnetic resonance imaging happened at field strengths considered low today.
openaire   +2 more sources

Perfusion Measurement with Low Field NMR

2023
<p>Blood perfusion is a fundamental parameter of tissue health and function. Measurements of blood perfusion are clinically used to assess the severity of strokes, tumors and other diseases. Nuclear Magnetic Resonance (NMR) is a common modality for these measurements, due to its flexibility, sensitivity and lack of ionising radiation.</p> ...
openaire   +1 more source

Low field NMR investigations of methyl tunnelling

Physica B: Condensed Matter, 1994
Abstract Low-field dipole-dipole-driven NMR has been used to measure the ground state methyl tunnelling frequencies in dimethylmalonic acid ( ν t = 337 ± 3 kHz), 3-hexanone ( ν t = 210 ± 10 kHz) and 4-heptanone ( ν t = 495 ± 3 kHz).
P.M. Debenham, A.J. Horsewill, I.B.I. Tomsah, S. Clough   +3 more
openaire   +1 more source

Proton Low‐Field NMR Measurements on Crackers

Journal of Food Science, 1994
ABSTRACT We have shown that the signal obtained for crackers (3.5% water content) by low resolution NMR method using the CPMG sequence, described the relaxation of the protons of fat. For water content up to 7.1% the water signal is not seen by a CPMG sequence, the water has therefore a very short spin‐spin relaxation time (T2 < 0 ...
PASCAL DESBOIS, DENIS LE BOTLAN
openaire   +1 more source

Monitoring Starch Saccharification Using Low Field NMR

2005 Tampa, FL July 17-20, 2005, 2005
The present study is an attempt to develop a low field NMR based technique for fast analysis of enzymatic saccharification of corn starch. Experiments were first conducted on model samples containing pure starch and glucose to prove the hypothesis.
null Fu, null R., null Qi, null J., null Ruan, null R. and Chen, null Xiangyang Lin, null Xiaofei Ye, null Chris Doona and Tom Yang   +8 more
openaire   +1 more source

ChemInform Abstract: NMR at Low Magnetic Fields

ChemInform, 2009
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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.
Bernhard Bluemich, Federico Casanova, Stephan Appelt   +2 more
openaire   +1 more source

Porosity Distributions in Carbonate Reservoirs Using Low-Field NMR

Journal of Canadian Petroleum Technology, 2002
Abstract Alberta contains significant deposits of oil and gas in carbonate formations. Carbonates tend to have fairly tight matrix structures, resulting in low primary porosity and permeability. Laboratory characterization of carbonate properties is a slow and tedious process, however, core data is often collected ...
A. Mai, A. Kantzas
openaire   +1 more source