[PDF] Top 20 Cryogenic sample exchange NMR probe for magic angle spinning dynamic nuclear polarization
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Cryogenic sample exchange NMR probe for magic angle spinning dynamic nuclear polarization
... a cryogenic sample exchange system that dramatically improves the efficiency of magic angle spinning (MAS) dynamic nuclear polarization (DNP) experiments by ... Voir le document complet
24
De novo prediction of cross-effect efficiency for magic angle spinning dynamic nuclear polarization
... good for both AMUPol and ...properties. For AMUPol, the analysis reveals the presence of a dipolar coupling of ~ 35 MHz and an exchange interaction of magnitude ~ 15 MHz, in line with previous ... Voir le document complet
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Interfacial Ca<sup>2+</sup> environments in nanocrystalline apatites revealed by dynamic nuclear polarization enhanced <sup>43</sup>Ca NMR spectroscopy
... solid-state nuclear magnetic resonance (NMR) has been used to study Ca 2 þ environments 1–5 , it has only rarely been applied to complex materials because of severe sensitivity ...the NMR- active ... Voir le document complet
8
Dynamic Nuclear Polarization Opens New Perspectives for NMR Spectroscopy in Analytical Chemistry
... an NMR probe with MAS capabilities that i) can be cooled down to ...the sample under MAS ...the NMR experiment is ...the NMR probe as can be seen on Figure 2a. The sample ... Voir le document complet
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A CW 250 GHz Gyrotron Oscillator for use in Dynamic Nuclear Polarization
... second probe will be constructed which incorporates magic-angle spinning capabilities in order to further increase the resolution of solid- state ...the sample. Construction of such a ... Voir le document complet
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Accurate Determination of Interstrand Distances and Alignment in Amyloid Fibrils by Magic Angle Spinning NMR
... crucial for observing conformational shifts of ...state NMR approaches involving the site-specific addition of 19 F nuclei can be used to measure longer distances 59 - 61 , a distance of 6 Å may be the ... Voir le document complet
18
Dynamic Nuclear Polarization Efficiency Increased by Very Fast Magic Angle Spinning
... separates spinning sidebands from the isotropic shift range and provides spectra from which isotropic chemical shifts, quadrupolar couplings and asymmetry parameters can be reliably ...attractive for ... Voir le document complet
5
Quest for new nuclear magic numbers with MINOS
... hit pad (x, y) are shown in orange. θ ext is deduced from Eq. 3.2 by ensuring that the two points forming the segment (i.e. track in the detection plane) are contained in the same half-disk. We apply this iteratively and ... Voir le document complet
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Hydroxyapatites: Key Structural Questions and Answers from Dynamic Nuclear Polarization
... structure for DNP as quasi one- dimensional proton spin diffusion is still active under moderate MAS and allows the description of a nanoparti- cle in its ...suitable for the study of natural nano-crystals ... Voir le document complet
13
Natural Isotopic Abundance 13C and 15N Multidimensional Solid-State NMR Enabled by Dynamic Nuclear Polarization
... MAS-DNP polarization agent was incorporated with the sample using spray drying or hot-melt extrusion, both of which are techniques to produce amorphous solid dispersions in the pharmaceutical ...the ... Voir le document complet
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A 250 GHz gyrotron with a 3 GHz tuning bandwidth for dynamic nuclear polarization
... source for DNP[14] due to their relatively high power levels compared to solid-state devices (roughly three orders of magnitude more power), long lifetimes, and efficient scaling to higher ...an NMR ... Voir le document complet
16
Cross-Correlated Relaxation of Dipolar Coupling and Chemical-Shift Anisotropy in Magic-Angle Spinning R 1ρ NMR Measurements: Application to Protein Backbone Dynamics Measurements
... anisotropic interactions (in particular, the averaging of dipolar couplings and chemical-shift anisotropies), which report on the amplitude of motion seen by these interactions, and (ii) through the investigation of ... Voir le document complet
24
Determining Cholesterol Binding to Membrane Proteins by Cholesterol 13C Labeling in Yeast and Dynamic Nuclear Polarization NMR
... scores for the top 100 PRODIGY-ranked structures differ only by ...metric for ranking the docking results and at the same time monitored the PRODIGY scores for red flags when comparing ...poses ... Voir le document complet
28
1H high resolution magic-angle coil spinning (HR-MACS) μNMR metabolic profiling of whole Saccharomyces cervisiae cells: a demonstrative study
... HR-MAS NMR is considered a near universal technique for providing unbiased and high-precision fingerprints of abundant metabolites in heterogenous ...progress for in vivo studies of intact bacterial ... Voir le document complet
14
Atomic-level structure determination of organic assemblies by dynamic nuclear polarization enhanced solid-state NMR
... input for the DFT calcula- tions, and hydrogen atom positions were optimized before the GIPAW ...expected polarization buildups were then simulated with SPINEVOLU- TION, based on the CSA tensor parameters ... Voir le document complet
142
Solid-state 31P and 1H chemical MR micro-imaging of hard tissues and biomaterials with magic angle spinning at very high magnetic field
... rotor spinning frequency 57 ...the spinning frequency was measured on a cylindrical silicone phantom and fitted with a polynomial function to calculate a current correcting factor accounting for this ... Voir le document complet
12
Two- and Three-Dimensional Multinuclear Stray-Field Imaging of Rotating Samples with Magic-Angle Spinning (STRAFI-MAS): From Bio to Inorganic Materials
... 29 Si Image of Silicon Carbide Silicon is a widely used element in many applications, ranging from high endurance materials (i.e., automo- bile components, bearings, and abrasives) to elec- tronic and nuclear ... Voir le document complet
7
Chemical Exchange in Novel SpiroBicyclic Zwitterionic Janovsky Complexes using Dynamic 1H NMR Spectroscopy
... Chemical exchange processes in molecular systems have been amenable to NMR investigation since the ...[36,37] NMR presents a rich source of information for dynamic processes that takes ... Voir le document complet
8
AMBITION -- Comet Nucleus Cryogenic Sample Return (White paper for ESA's Voyage 2050 programme)
... outbursts. For example, 29P shows almost constant activity and very regular large (many magnitudes increase in coma brightness) outbursts, the triggering mechanism of which being ...interesting for comet ... Voir le document complet
27
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
... P magic-angle spinning NMR spectroscopy and Density Functional Theory ...P NMR Fermi contact shifts in these materials were calculated based on the projector augmented wave approach ... Voir le document complet
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