Results 21 to 30 of about 1,356,161 (305)

Molecular Dynamics and Chain Length of Edible Oil Using Low-Field Nuclear Magnetic Resonance

open access: yesMolecules, 2022
Nuclear magnetic resonance (NMR) techniques are widely used to identify pure substances and probe protein dynamics. Edible oil is a complex mixture composed of hydrocarbons, which have a wide range of molecular size distribution.
Zijian Jia, Can Liang
doaj   +1 more source

Digitally Based Precision Time-Domain Spectrometer for NMR Relaxation and NMR Cryoporometry

open access: yesMicro, 2023
NMR Relaxation (NMRR) is an extremely useful quantitative technique for material science, particularly for studying polymers and porous materials. NMR Cryoporometry (NMRC) is a powerful technique for the measurement of pore-size distributions and total ...
John Beausire Wyatt Webber, Pavel Demin
doaj   +1 more source

NMR relaxation and self-diffusion in aqueous micellar gels of pluronic F-127

open access: yes, 2020
We studied the transverse NMR relaxation of protons of different chemical groups and diffusion of molecules in an aqueous pluronic F-127 system. The system was studied at concentrations of 15, 21 and 28 wt% and in the temperature range of 293–333 K.
M. Shaikhullina   +5 more
semanticscholar   +1 more source

Fast-field-cycling ultralow-field nuclear magnetic relaxation dispersion

open access: yesNature Communications, 2021
Nuclear spin polarization and relaxation can be studied using nuclear magnetic resonance (NMR). Here the authors demonstrate a combination of fast-field cycling and optical magnetometry techniques, to realize a NMR sensor that operates in the region of ...
Sven Bodenstedt   +2 more
doaj   +1 more source

125Te spin-lattice relaxation in a candidate to Weyl semimetals WTe2

open access: yesResults in Physics, 2021
The tungsten ditelluride WTe2 was suggested to belong to the Weyl semimetal family. We studied 125Te spin-lattice relaxation and NMR spectra in a WTe2 single crystal within a large range from 28 K up to room temperature.
A.O. Antonenko   +9 more
doaj   +1 more source

Numerical study of NMR relaxation responses in synthetic clayey sandstone by dual-scale modeling [PDF]

open access: yesE3S Web of Conferences, 2023
Nuclear Magnetic Resonance (NMR) relaxometry is a common technique for petrophysical characterization of sedimentary rocks. The standard interpretation of NMR relaxation response assumes that the fast diffusion limit is valid for the whole pore space ...
Cui Yingzhi   +2 more
doaj   +1 more source

Molecular dynamics simulations of NMR relaxation and diffusion of bulk hydrocarbons and water. [PDF]

open access: yesJournal of magnetic resonance (San Diego, Calif. 1997 : Print), 2016
Molecular dynamics (MD) simulations are used to investigate 1H nuclear magnetic resonance (NMR) relaxation and diffusion of bulk n-C5H12 to n-C17H36 hydrocarbons and bulk water.
P. Singer   +3 more
semanticscholar   +1 more source

Understanding NMR relaxometry of partially water-saturated rocks [PDF]

open access: yesHydrology and Earth System Sciences, 2015
Nuclear magnetic resonance (NMR) relaxometry measurements are commonly used to characterize the storage and transport properties of water-saturated rocks. Estimations of these properties are based on the direct link of the initial NMR signal amplitude to
O. Mohnke   +3 more
doaj   +1 more source

Uniform Penalty inversion of two-dimensional NMR relaxation data [PDF]

open access: yesarXiv.org, 2016
The inversion of two-dimensional NMR data is an ill-posed problem related to the numerical computation of the inverse Laplace transform. The Uniform Penalty (UPEN) algorithm (Borgia et al 1998 J. Magn. Reson.
V. Bortolotti   +4 more
semanticscholar   +1 more source

Ultrafast transverse relaxation exchange NMR spectroscopy

open access: yesPhysical Chemistry Chemical Physics, 2022
An ultrafast two-dimensional NMR method allows quantification of molecular exchange rates efficiently based onT2relaxation contrast.
Md Sharif Ullah   +3 more
openaire   +3 more sources

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