Results 301 to 310 of about 254,930 (339)

ChemInform Abstract: Non‐Linear Liquid‐State NMR

ChemInform, 2014
AbstractReview: 199 refs.
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Long time tail effect in liquid state NMR spectroscopy

Chemical Physics Letters, 2003
Abstract Experimental evidence of long time tail effect in liquid state NMR spectroscopy has been observed, characterized and its potential applications proposed. It is found that the physical mechanism for the long time tail of the spin auto-correlation function in the liquid state is similar to, but not identical with, that in the solid state.
Shangwu Ding, Pin-Hsiu Liu, Yu-Wen Hong
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Ensemble Quantum Computing by Liquid-State NMR Spectroscopy

2001
Abstract : We propose to use NMR as a testbed to develop general methods for solving computational problems on EQC's, to study the fundamental physics and computer science of these machines, and to learn how to make optimal use of the trade-offs that their unique capabilities permit us to make.
David G. Cory, Timothy E. Havel
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High-field liquid state NMR hyperpolarization: a combined DNP/NMRD approach

Phys. Chem. Chem. Phys., 2014
Dynamic nuclear polarization and NMR relaxation dispersion measurements have been performed on liquid solutions of TEMPOL radicals in solvents with different viscosities at a high magnetic field of 9.2 T. The results indicate that fast dynamics significantly contribute to DNP enhancements at high fields.
Petr Neugebauer, Jan G. Krummenacker, Vasyl P. Denysenkov, Christina Helmling, LUCHINAT, CLAUDIO, PARIGI, GIACOMO, Thomas F. Prisner   +6 more
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Practical aspects of liquid‐state NMR with inductively coupled solenoid coils

Magnetic Resonance in Chemistry, 2010
AbstractSensitivity enhancement by the use of inductively coupled milli‐ and microcoils has been demonstrated in solid‐state as well as liquid‐state NMR. In this work, we discuss the practical aspects of using inductively coupled solenoid coils of different sizes in a liquid‐state NMR spectrometer. The sensitivity and resolution enhancements from these
Joel A, Tang, Alexej, Jerschow
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Structure of Thermally Modified Wood Studied by Liquid State NMR Measurements

Holzforschung, 2002
Summary Thermal modification is a technique to produce wood with increased dimensional stability and lower equilibrium moisture content. 2H NMR relaxation measurements and pulsed field gradient (PFG-NMR) methods are non-invasive spectroscopic techniques that can be used to measure the response of liquid confined in porous materials and ...
Hietala, Sami, Maunu, Sirkka Liisa, Sundholm, Franciska, Jämsä, Saila, Viitaniemi, Pertti   +5 more
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Non-Bloch decay of Rabi oscillations in liquid state NMR

EPL (Europhysics Letters), 2018
Rabi oscillations are known to exhibit non-Bloch behaviour in anisotropic media. In this letter, we report an experimental observation of non-Bloch decay of Rabi oscillations in isotropic liquid state NMR. To avoid the dephasing due to the radio-frequency inhomogeneities, we develop a modified version of the rotary echo protocol and use it to determine
Arnab Chakrabarti, Rangeet Bhattacharyya
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Dynamic Nuclear Polarization: Applications to Liquid-State NMR Spectroscopy

2009
Dynamic nuclear polarization (DNP) was first demonstrated in the early days of NMR spectroscopy. The technique involves the transfer of large spin polarization from unpaired electron spins to neighboring nuclei using microwave irradiation close to the electron Larmor frequency.
Adrian L. Davis, Iain J. Day
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NMR study of Sc1−xUxPd3 under non-fermi liquid state

Physica B: Condensed Matter, 2000
Abstract We have performed 45Sc NMR measurements on the Sc1−xUxPd3 system, which exhibits an unconventional Kondo effect with a non-Fermi liquid character at low temperatures for the samples with x⩽0.3. The relaxation rates, 1/T1, for the x=0.3 and 0.25 samples are strongly enhanced by magnetic fluctuations below 30 K in low magnetic field ...
K Ueda, T Kohara, D.A Gajewski, M.B Maple   +3 more
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Liquid state NMR studies of polymer dynamics and conformation

1993
Nuclear magnetic resonance experiments can reveal not only the chemical structures of polymers, together with their defects, but also a wealth of detail concerning their conformations and their motions. The local conformations combine to determine the bulk coiling properties of the polymer, such as the radius of gyration and hydrodynamic volume.
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