Results 1 to 10 of about 264,873 (185)

Hyphenation of 2D NMR With Hydrogenative PHIP. [PDF]

open access: yesMagn Reson Chem
ABSTRACTParahydrogen induced polarisation (PHIP) is often used to enhance the sensitivity of NMR, with the purpose of extending the applicability of the technique. Nuclear spin hyperpolarisation obtained via PHIP is generally localised on the protons derived from the addition of para‐enriched hydrogen to an unsaturated substrate.
Jimmink BO, Tessari M, Kentgens APM.
europepmc   +5 more sources

1H-NMR, 1H-NMR T2-edited, and 2D-NMR in bipolar disorder metabolic profiling [PDF]

open access: yesInternational Journal of Bipolar Disorders, 2017
Background The objective of this study was to identify molecular alterations in the human blood serum related to bipolar disorder, using nuclear magnetic resonance (NMR) spectroscopy and chemometrics.
Sumit Sethi   +15 more
doaj   +4 more sources

Two-dimensional NMR inversion based on fast norm smoothing method

open access: yesEnergy Geoscience, 2022
Two-dimensional (2D) nuclear magnetic resonance (NMR) inversion operates with massive echo train data and is an ill-posed problem. It is very important to select a suitable inversion method for the 2D NMR data processing. In this study, we propose a fast,
Youlong Zou   +5 more
doaj   +1 more source

Optimization and practical implementation of ultrafast 2D NMR experiments

open access: yesQuímica Nova, 2013
Ultrafast 2D NMR is a powerful methodology that allows recording of a 2D NMR spectrum in a fraction of second. However, due to the numerous non-conventional parameters involved in this methodology its implementation is no trivial task. Here, an optimized
Luiz H. K. Queiroz Júnior   +2 more
doaj   +3 more sources

Sensitivity Analysis of T2-T1 2D NMR Measurement Parameters in Shale Oil Reservoirs

open access: yesChinese Journal of Magnetic Resonance, 2023
In order to improve the reliability of two-dimensional nuclear magnetic resonance (2D NMR) measurement in shale oil reservoirs, the T2-T1 2D NMR response characteristics and influencing factors of shale oil reservoirs were analyzed in three scenarios ...
ZHANG Rong   +6 more
doaj   +1 more source

A High-precision Processing Method of Two-dimensional NMR Logging Data Based on Component Compensation

open access: yesChinese Journal of Magnetic Resonance, 2022
Two-dimensional nuclear magnetic resonance (NMR) technology can perform non-destructive, rapid and quantitative measurement and characterization of various hydrogen-containing fluids in the reservoir, but is limited by the acquisition methods and ...
Zhen-lin WANG   +6 more
doaj   +1 more source

NMR Data Analysis of Manidipine Hydrochloride

open access: yesChinese Journal of Magnetic Resonance, 2021
Manidipine hydrochloride is the third generation of new synthetic antihypertensive drugs. The structure of manidipine hydrochloride was confirmed with 1D and 2D nuclear magnetic resonance (NMR) techniques, such as 1H NMR, 13C NMR, DEPT-135, 1H-1H COSY ...
LI Yu-jiang   +6 more
doaj   +1 more source

Fast 2D NMR for Metabolomics

open access: yes, 2023
Metabolomics provides crucial information on the metabolism of living organisms, by detecting and quantifying metabolites in biofluids, biopsies or extracts. Metabolomics studies involve analysing large collections of very complex samples by NMR or mass spectrometry methods.
Praud, Clément   +4 more
openaire   +2 more sources

Fluid identification method based on 2D diffusion-relaxation nuclear magnetic resonance (NMR)

open access: yesPetroleum Exploration and Development, 2012
Based on current acquisition modes of MRIL-Prime NMR logging tool, 2D NMR signals could be obtained by the combination of logging data from different modes, then the fluid properties in complicated reservoirs could be distinguished by 2D diffusion ...
Falong HU   +5 more
doaj   +1 more source

A self optimizing synthetic organic reactor system using real-time in-line NMR spectroscopy [PDF]

open access: yes, 2015
A configurable platform for synthetic chemistry incorporating an in-line benchtop NMR that is capable of monitoring and controlling organic reactions in real-time is presented.
Cronin, Leroy   +3 more
core   +2 more sources

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