[PDF] Top 20 14N magic angle spinning overtone NMR spectra
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14N magic angle spinning overtone NMR spectra
... the overtone powder patterns across ranges of several tens of kHz or ...by overtone magnetization, combined with the dependence of the nutation frequency on the magnitude and orientation of the quadrupolar ... Voir le document complet
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59Co second-order quadrupolar effects in the 13C cross-polarization magic angle spinning NMR spectra of the cobaltocenium salts [Co2*Co]+[PF6]- and [Cp*CpCo]+[PF6]-
... 1/2) often show characteristic splitting patterns. 1 The reason is that dipolar interactions between the S and the I nuclei are not completely averaged out by magic angle spinning when the ... Voir le document complet
7
14N overtone NMR spectra under magic angle spinning : experiments and numerically exact simulations
... / La version de cette publication peut être l’une des suivantes : la version prépublication de l’auteur, la version acceptée du manuscrit ou la version de l’éditeur. For the publisher’[r] ... Voir le document complet
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Evaluation de deux nouveaux outils pour l'étude d'échantillons biologiques par spectroscopie de Résonance Magnétique Nucléaire: -La RMN HR-MAS (High-Resolution Magic Angle Spinning): une technique d'analyse d'échantillons bruts ; -La Métabonomique: une méthode d'analyse statistique des spectres pour la recherche de signatures métaboliques
... larva spectra comes mainly from phospholipids and other water soluble compounds ...P NMR analysis on hemolymph and fat body (Thompson et ...P NMR spectra obtained in vivo from the larvae or ... Voir le document complet
183
Aromatic spectral editing techniques for magic-angle-spinning solid-state NMR spectroscopy of uniformly 13C-labeled proteins
... solid-state NMR MAS spectra remains a challenge in structure determination of proteins and other biological ...the NMR spectra and thus increase the reliability of the assignment, but they ... Voir le document complet
19
Spatially-resolved metabolic profiling of living Drosophila in neurodegenerative conditions using 1H magic angle spinning NMR
... Data processing. The 2D Chemical Shift Imaging (CSI) spectral maps were integrated over the three segments of the Drosophila body to obtain three localized 1D spectra corresponding to the head, thorax, and ... Voir le document complet
13
Spatially-resolved metabolic profiling of living Drosophila in neurodegenerative conditions using 1H magic angle spinning NMR
... Distinction between control and diseased fly head 1D spectra using a multivariate test. Focusing on the head region, we showed that univariate analysis on the main peaks enabled to identify metabolites that varied ... Voir le document complet
10
Dynamic Nuclear Polarization Efficiency Increased by Very Fast Magic Angle Spinning
... ABSTRACT: Dynamic nuclear polarization (DNP) has recently emerged as a tool to enhance the sensitivity of solid-state NMR experiments. However, so far high enhancements (>100) are limited to relatively low ... Voir le document complet
5
Double cross polarization for the indirect detection of nitrogen-14 nuclei in magic angle spinning NMR spectroscopy
... nitrogen-14 NMR spectra under fast magic-angle spin- ning conditions on polycrystalline samples such as glycine, l-histidine, and the dipeptide ...correlation spectra can be tuned to ... Voir le document complet
10
Density functional theory-assisted 31P and 23Na magic-angle spinning nuclear magnetic resonance study of the Na3V2(PO4)2F3–Na3V2(PO4)2FO2 solid solution: unraveling Its local and electronic structures
... (NMR) spectra of the nucleus of interest. The interpretation of NMR resonances of paramagnetic materials is often challenging and requires the help from density functional theory (DFT) ... Voir le document complet
37
Determination of long-range distances by fast magic-angle-spinning radiofrequency-driven 19 F-19 F dipolar recoupling NMR
... solid-state NMR (SSNMR) is paramagnetic relaxation enhancement (PRE) 7–11 , which uses unpaired electrons with its 658-fold larger gyromagnetic ratio than 1 H to enhance nuclear spin T 1 and T 2 relaxation in a ... Voir le document complet
29
Cross-Correlated Relaxation of Dipolar Coupling and Chemical-Shift Anisotropy in Magic-Angle Spinning R 1ρ NMR Measurements: Application to Protein Backbone Dynamics Measurements
... the spectra obtained with very short mixing time (100 μs, red) and 15 ms mixing (black), one can observe that there are additional peaks pointing to 1 H- 1 ... Voir le document complet
24
Ultra-wideline 14N NMR spectroscopy as a probe of molecular dynamics
... H NMR powder pattern is sensitive to any dynamics which modulate the EFG on a timescale similar to 1/C Q ...using magic angle spinning, 3 the QCPMG 4 acquisition protocol, 5 or ...H NMR ... Voir le document complet
4
Mobility of organic pollutants in soil components. What role can magic angle spinning NMR play ?
... resolution magic angle spinning (MAS) NMR technique to study such mechanisms in situ on highly hydrated ...MAS NMR techniques that allow covalent and non-covalent bond analysis is ... Voir le document complet
15
Cryogenic sample exchange NMR probe for magic angle spinning dynamic nuclear polarization
... Preliminary SSNMR studies suggest that double bond twist in L is localized on the C15=N bond [6]. Here we use 13 C labeled 13 C-14-retinal and 13 Cε-Lys (see Fig. 9) in order to perform a standard radio frequency driven ... Voir le document complet
24
High-resolution Magic-angle Spinning (HR-MAS) NMR Spectroscopy
... the spinning frequency, and r is the radial distance between the rotation axis and the ...the spinning frequency and sample ...MAS spectra of living bacterial cells 50 and animal tissues 51,52 at a ... Voir le document complet
19
Proton micro-magic-angle-spinning NMR spectroscopy of nanoliter samples
... solid-state NMR spectroscopy using fused-silica capillaries as sample containers with about 64–88 nl sample ...sample spinning up to 20 ...H spectra by employing homonuclear decoupling sequences of ... Voir le document complet
12
Intact NMR spectroscopy: slow high-resolution magic angle spinning chemical shift imaging
... CSI spectra (Figs. 1a and S4) reveal highly congested spectra with ssb signals masking some significant ...slice spectra associated with the garlic layer has overlapped with a set of multiplets of ... Voir le document complet
20
Accurate Determination of Interstrand Distances and Alignment in Amyloid Fibrils by Magic Angle Spinning NMR
... and magic angle spinning (MAS) ...the spectra, MAS NMR is uniquely capable of delivering site-specific, atomic resolution information about all levels of amyloid structure: (1) the ... Voir le document complet
18
ASICS: an automatic method for identification and quantification of metabolites in complex 1D 1H NMR spectra
... This whole procedure has been implemented on a R freeware code and all further results have been obtained using a classical personal computer and the R 3.2.2 version. All presented results could be computed using the ... Voir le document complet
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