Results 11 to 20 of about 267,493 (300)

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

1D “Spikelet” Projections from Heteronuclear 2D NMR Data—Permitting 1D Chemometrics While Preserving 2D Dispersion

open access: yesMetabolites, 2019
Nuclear magnetic resonance (NMR) spectroscopy is a powerful tool for the non-targeted metabolomics of intact biofluids and even living organisms. However, spectral overlap can limit the information that can be obtained from 1D 1H NMR.
Maryam Tabatabaei Anaraki   +6 more
doaj   +1 more source

A Two-Dimensional NMR Logging Method for Gas-Water Identification in Dolomite Reservoir of the Western Sichuan Gas Field

open access: yesChinese Journal of Magnetic Resonance, 2020
The dolomite reservoirs in the fourth member of Leikoupo formation of the western Sichuan gas field have good prospects for natural gas exploration and development. However, the conventional and one-dimensional nuclear magnetic resonance (1D NMR) logging
ZHANG Shi-mao   +3 more
doaj   +1 more source

Ruthenium Olefin Metathesis Catalysts Bearing Carbohydrate-Based N-Heterocyclic Carbenes [PDF]

open access: yes, 2010
Ru-based olefin metathesis catalysts containing carbohydrate-derived NHCs from glucose and galactose were synthesized and characterized by NMR spectroscopy. 2D-NMR spectroscopy revealed the presence of Ru−C (benzylidene) rotamers at room temperature, and
Grubbs, Robert H., Keitz, Benjamin K.
core   +2 more sources

Stereoisomerism in pentaerythritol-bridged cyclotriphosphazene tri-spiranes: spiro and ansa 1,3-propanediyldioxy disubstituted derivatives [PDF]

open access: yes, 2005
Four isomeric products were isolated and purified from the reaction of 1,3-propanediol with the tetra-spirane cyclophosphazene-organophosphate compound (1): viz. the di-monospiro (2a), di-monoansa (2b) and two monospiro-monoansa derivatives (2c) and (2d).
Aylin, U.   +6 more
core   +1 more source

NMR linewidth and Skyrmion localization in quantum Hall ferromagnets [PDF]

open access: yes, 2004
The non-monotonic behavior of the NMR signal linewidth in the 2D quantum Hall system is explained in terms of the interplay between skyrmions localization, due to the influence of disorder, and the non-trivial temperature dependent skyrmion dynamics ...
A. A. Belavin   +7 more
core   +2 more sources

1D AND 2D NMR STUDIES OF 2–(2–(BENZYLOXY)–3–METHOXYPHENYL)–1H–BENZIMIDAZOLE

open access: yesIndonesian Journal of Chemistry, 2010
The reaction of Benzyl o-vanillin 1 and o-phenylene diamine 2 in dichloromethane produced new benzimidazole, 3. The complete assignments of 3 were made using 1D and 2D NMR including COSY, HMQC and HMBC NMR in CDCl3 and acetone-d6.
Mohammed Hadi Al–Douh   +2 more
doaj   +1 more source

Vortex Structures in Model p-Wave Superconducting Sr2RuO4 -- Single 2-Dimensional Band v.s. Quasi-1-Dimensional Band [PDF]

open access: yes, 2013
There have been an interesting debate on the primary source of chiral p-wave superconductivity in Sr2RuO4. We present a comparative study on the vortex structure between a single 2-dimensional (2D) band and quasi-1D band model by using Bogoliubov-de ...
Huo, J., Zhang, Fu-Chun
core   +2 more sources

A C# Language-Based Software for Designing Two-Dimensional NMR Logging Activation Sets

open access: yesChinese Journal of Magnetic Resonance, 2019
Two-dimensional (2D) NMR logging activation sets are acquisition means aiming at obtaining specific formation information, affecting the adaptability of NMR instruments to different types of reservoirs and the reliability of the original data.
CUI Shuai-shuai   +5 more
doaj   +1 more source

Resistively-Detected NMR in a Two-Dimensional Electron System near $\nu = 1$: Clues to the Origin of the Dispersive Lineshape [PDF]

open access: yes, 2006
Resistively-detected NMR measurements on 2D electron systems near the $\nu = 1$ quantum Hall state are reported. In contrast to recent results of Gervais \emph{et al.} [Phys. Rev. Lett.
Eisenstein, J. P.   +3 more
core   +3 more sources

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