Results 41 to 50 of about 339,034 (125)
Beilstein Journal of Organic Chemistry, 2023 Previously we reported on the bromination of endo-7-bromonorbornene at different temperatures yielding mixtures of addition products. The structural elucidations of the formed compounds were achieved by NMR spectroscopy. Particularly, the γ-gauche effect
Demet Demirci Gültekin +5 more
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Effects of n-3 fatty acids on the NMR profile of plasma lipoproteins.
Journal of Lipid Research, 1996 The effects of fish oil supplementation (14.5 g n-3 fatty acids/day) on plasma lipoprotein particles in healthy volunteers were assessed by high resolution 13C and 1H nuclear magnetic resonance (NMR) spectroscopy.
J D Bell +6 more
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High-pressure NMR spectroscopy in studies of the conformational composition of small molecules of ibuprofen in supercritical carbon dioxide [PDF]
, 2020 An experimental approach in conducting NMR measurements at supercritical parameters of state is discussed. A novel design of the high-pressure NMR cell was developed which allowed eliminating the field inhomogeneity and, thus, increasing the sensitivity of the experiment at the supercritical state.
arxiv +1 more source
Molecules, 2019 The translational molecular dynamics in porous materials are affected by the presence of the porous structure that presents an obstacle for diffusing molecules in longer time scales, but not as much in shorter time scales.
Igor Serša
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Lattice simulation method to model diffusion and NMR spectra in porous materials [PDF]
, 2014 A coarse-grained simulation method to predict NMR spectra of ions diffusing in porous carbons is proposed. The coarse-grained model uses input from molecular dynamics simulations such as the free-energy profile for ionic adsorption, and density-functional theory calculations are used to predict the NMR chemical shift of the diffusing ions. The approach
arxiv +1 more source
Table-top NMR system for high-pressure studies with in-situ laser heating [PDF]
, 2019 High pressure Nuclear Magnetic Resonance (NMR) is known to uncover behavior of matter at extreme conditions. However, significant maintenance demands, space requirements and high costs of superconducting magnets render its application unfeasible for regular modern high pressure laboratories.
arxiv +1 more source
Prog. NMR Spectrosc. 38, 325-360 (2001), 2000 In this article I will describe how NMR techniques may be used to build simple quantum information processing devices, such as small quantum computers, and show how these techniques are related to more conventional NMR experiments.
arxiv
Geosciences, 2019 Carbonate reservoirs form important exploration targets for the oil and gas industry in many parts of the world. This study aims to differentiate and quantify pore types and their relation to petrophysical properties in the Permo-Triassic Khuff Formation,
Jörg Smodej +6 more
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Proton magnetic resonance studies of the aggregation of taurine-conjugated bile salts.
Journal of Lipid Research, 1992 The concentration dependence of the 500 MHz 1H-NMR spectra of taurocholate, taurochenodeoxycholate, taurodeoxycholate, and the monosulfate esters of taurochenodeoxycholate has been examined at 0.154 M NaCl in D2O.
RD Stevens +3 more
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Multiple Quantum NMR Dynamics in Pseudopure States [PDF]
, 2008 We investigate numerically the Multiple Quantum (MQ) NMR dynamics in systems of nuclear spins 1/2 coupled by the dipole-dipole interactions in the case of the pseudopure initial state. Simulations of the MQ NMR with the real molecular structures such as six dipolar-coupled proton spins of a benzene, hydroxyl proton chains in calcium hydroxyapatite and ...
arxiv +1 more source