Determination of the Fermi Velocity by the High-Field Tilt Effect

1960 ◽  
Vol 120 (4) ◽  
pp. 1261-1265 ◽  
Author(s):  
Harold N. Spector
Keyword(s):  
High Field ◽  
Fermi Velocity

scholarly journals How wide is the window opened by high-resolution relaxometry on the internal dynamics of proteins in solution?

2021 ◽  
Vol 75 (2-3) ◽  
pp. 119-131
Author(s):  
Albert A. Smith ◽  
Nicolas Bolik-Coulon ◽  
Matthias Ernst ◽  
Beat H. Meier ◽  
Fabien Ferrage
Keyword(s):  
Nuclear Magnetic Resonance ◽  
High Resolution ◽  
High Field ◽  
Rotational Diffusion ◽  
Relaxation Data ◽  
Internal Dynamics ◽  
Nmr Relaxometry ◽  
Analysis Of Dynamics

AbstractThe dynamics of molecules in solution is usually quantified by the determination of timescale-specific amplitudes of motions. High-resolution nuclear magnetic resonance (NMR) relaxometry experiments—where the sample is transferred to low fields for longitudinal (T1) relaxation, and back to high field for detection with residue-specific resolution—seeks to increase the ability to distinguish the contributions from motion on timescales slower than a few nanoseconds. However, tumbling of a molecule in solution masks some of these motions. Therefore, we investigate to what extent relaxometry improves timescale resolution, using the “detector” analysis of dynamics. Here, we demonstrate improvements in the characterization of internal dynamics of methyl-bearing side chains by carbon-13 relaxometry in the small protein ubiquitin. We show that relaxometry data leads to better information about nanosecond motions as compared to high-field relaxation data only. Our calculations show that gains from relaxometry are greater with increasing correlation time of rotational diffusion.

Studies of Australian soft corals. XXXII. The structure determination of degraded xenicin-type diterpenes from several Efflatounaria species

1983 ◽  
Vol 36 (11) ◽  
pp. 2279 ◽  
Author(s):  
BF Bowden ◽  
JC Coll ◽  
VA Patrick ◽  
DM Tapiolas
Keyword(s):  
Single Crystal ◽  
Chemical Transformation ◽  
Structure Determination ◽  
High Field ◽  
Soft Corals ◽  
X Ray ◽  
The Third

Three new diterpenes have been isolated from soft corals of the genus Efflatounaria (Coelenterata, Octocorallia, Alcyonacea, Xeniidae). The structure of the first compound (4) was elucidated on the basis of high-field 1H n.m.r. spectroscopy while that of the second metabolite (5) was determined by single-crystal X-ray analysis. The third diterpene (6) was structurally related to (5), and its structure was confirmed by chemical transformation. All three diterpenes can be derived from xenicin-type precursors, by cleavage and recyclization.

Sharp gap edge and determination of the fermi velocity in Y1Ba2Cu3O7?? by point contact spectroscopy

1992 ◽  
Vol 5 (2) ◽  
pp. 191-194 ◽  
Author(s):  
Nir Mass ◽  
D. Ilzycer ◽  
G. Deutscher ◽  
G. Desgardin ◽  
I. Monot ◽  
...  
Keyword(s):  
Point Contact ◽  
Fermi Velocity ◽  
Point Contact Spectroscopy

Elucidation of Polymer Microstructure by High Resolution NMR Spectroscopy

1967 ◽  
Vol 40 (2) ◽  
pp. 385-399 ◽  
Author(s):  
Raymond C. Ferguson
Keyword(s):  
Nmr Spectroscopy ◽  
High Resolution ◽  
Spectral Data ◽  
High Field ◽  
Structural Features ◽  
Polymer Microstructure ◽  
Structural Isomerism ◽  
High Resolution Nmr ◽  
Polymer Tacticity

Abstract High resolution NMR spectroscopy is proving to be a useful experimental technique for determining the microstructures of high polymers. Its major utility, aside from identifying structural features often not detectable by other methods, lies in quantitative applications. Some examples are the determination of monomer ratios in copolymers, polymer tacticity, sequence isomerism of monomer units, and other types of structural isomerism. The applicability of the method is being enhanced by continuing development of high-field spectrometers, special accessories, and new experimental techniques, and by application of computers to the analysis of spectral data.

Sub-ambient pressure IR-MALDI ion mobility spectrometer for the determination of low and high field mobilities

2020 ◽  
Vol 412 (22) ◽  
pp. 5247-5260
Author(s):  
José Villatoro ◽  
Martin Zühlke ◽  
Daniel Riebe ◽  
Toralf Beitz ◽  
Marcus Weber ◽  
...  
Keyword(s):  
Ion Mobility ◽  
High Field ◽  
Ambient Pressure ◽  
Ion Mobility Spectrometer

scholarly journals Slurry nebulisation ICP-MS direct determination of high field strength elements (Nb, Ta, Zr, and Hf) in silicate rocks

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32435-32440 ◽  
Author(s):  
Rui Tong ◽  
Wei Guo
Keyword(s):  
Field Strength ◽  
Inductively Coupled Plasma ◽  
High Field ◽  
Direct Determination ◽  
High Field Strength ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Silicate Rocks

A simple, rapid, and reliable method based on slurry nebulisation inductively coupled plasma mass spectrometry (ICP-MS) was developed for the direct determination of four high field strength elements (HFSEs, namely, Nb, Ta, Zr, and Hf) in refractory silicate rocks.

Direct determination of magnetic anisotropy in S=1 bond alternating system by high field ESR

2004 ◽  
Vol 272-276 ◽  
pp. E661-E662
Author(s):  
Y Inagaki ◽  
S Takeda ◽  
S Okubo ◽  
H Ohta ◽  
H Kikuchi ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
High Field ◽  
Direct Determination ◽  
High Field Esr
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