NMR 1H–1H Dipole Relaxation in Fluids: Relaxation of Individual 1H–1H Pairs versus Relaxation of Molecular Modes

2020 ◽  
Vol 124 (47) ◽  
pp. 10802-10810
Author(s):  
D. Asthagiri ◽  
Walter G. Chapman ◽  
George J. Hirasaki ◽  
Philip M. Singer
Keyword(s):  
Dipole Relaxation

Dipole-dipole relaxation in a two-spin system

1976 ◽  
Vol 22 (1) ◽  
pp. 125-138
Author(s):  
Ola Hartmann
Keyword(s):  
Spin System ◽  
Dipole Relaxation

scholarly journals The dipolar origin of protein relaxation

1968 ◽  
Vol 110 (3) ◽  
pp. 419-424 ◽  
Author(s):  
H. Hendrickx ◽  
R. Verbruggen ◽  
M. Y. Rosseneu-Motreff ◽  
V. Blaton ◽  
H. Peeters
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Bovine Serum ◽  
Axial Ratio ◽  
Ion Exchange Resin ◽  
Dielectric Dispersion ◽  
Dipole Relaxation ◽  
Ellipsoid Of Revolution ◽  
Dielectric Increment ◽  
Protein Relaxation

1. A set of parameters is proposed to check the interpretation of the dielectric behaviour of protein solutions as a rigid-dipole relaxation of prolate ellipsoids of revolution in the frequency range between 20 kHz and 10 MHz. Besides the δb-function of Scheraga, another analogous function (δa) is presented to establish size and shape of globular proteins. A study of the influence of solvent viscosity on the dielectric dispersion also gives strong evidence in favour of rigid-dipole relaxation. 2. Measurements of the dielectric dispersion of monomer solutions of bovine serum albumin and transferrin are reported. Monomers of bovine serum albumin were obtained by fractionation on Sephadex G-150. Low-conductivity solutions of both proteins are obtained by passage through an ion-exchange resin. 3. Computer analysis of the experimental dispersion curves by use of a two-term Debye dispersion gives valuable information about transferrin and leads to an axial ratio 4·5 for a prolate ellipsoid of revolution. The dielectric increment of bovine serum albumin is very low and no conclusive results have yet been obtained.

Dipole-relaxation parameters forCe3+-Fint−complexes inCaF2:Ce andCaF2:Ce,Mn

1987 ◽  
Vol 36 (18) ◽  
pp. 9769-9775 ◽  
Author(s):  
B. Jassemnejad ◽  
S. W. S. McKeever
Keyword(s):  
Dipole Relaxation ◽  
Relaxation Parameters

Dipole-relaxation dynamics in a modified polythiourea with high dielectric constant for energy storage applications

2019 ◽  
Vol 115 (16) ◽  
pp. 163901 ◽  
Author(s):  
Chao Wu ◽  
Zongze Li ◽  
Gregory M. Treich ◽  
Mattewos Tefferi ◽  
Riccardo Casalini ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Energy Storage ◽  
High Dielectric Constant ◽  
Relaxation Dynamics ◽  
Dipole Relaxation ◽  
Energy Storage Applications ◽  
High Dielectric

scholarly journals Dipole Relaxation in Semiconducting Zn2−xMgxInV3O11 Materials (Where x = 0.0, 0.4, 1.0, 1.6, and 2.0)

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2425
Author(s):  
Tadeusz Groń ◽  
Monika Bosacka ◽  
Elżbieta Filipek ◽  
Sebastian Pawlus ◽  
Andrzej Nowok ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction Method ◽  
State Density ◽  
Dipole Relaxation ◽  
Broadband Dielectric Spectroscopy ◽  
Semiconducting Properties ◽  
The Matrix ◽  
Spectroscopy Studies ◽  
Mg Content ◽  
Mg Doped

This paper reports on the electrical and broadband dielectric spectroscopy studies of Zn2−xMgxInV3O11 materials (where x = 0.0, 0.4, 1.0, 1.6, 2.0) synthesized using a solid-state reaction method. These studies showed n-type semiconducting properties with activation energies of 0.147–0.52 eV in the temperature range of 250–400 K, symmetric and linear I–V characteristics, both at 300 and 400 K, with a stronger carrier emission for the matrix and much less for the remaining samples, as well as the dipole relaxation, which was the slowest for the sample with x = 0.0 (matrix) and was faster for Mg-doped samples with x > 0.0. The faster the dipole relaxation, the greater the accumulation of electric charge. These effects were analyzed within a framework of the DC conductivity and the Cole–Cole fit function, including the solid-state density and porosity of the sample. The resistivity vs. temperature dependence was well fitted using the parallel resistor model. Our ab initio calculations also show that the bandgap increased with the Mg content.

Dipole relaxation in the crystalline phase of polymers—II

Polymer ◽  
1963 ◽  
Vol 4 ◽  
pp. 315-328 ◽  
Author(s):  
C.A.F Tuijnman
Keyword(s):  
Crystalline Phase ◽  
Dipole Relaxation

Dipole relaxation losses in CoO doped with Li or Na

1967 ◽  
Vol 5 (10) ◽  
pp. xviii
Author(s):  
A.J. Bosman ◽  
C. Crevecoeur
Keyword(s):  
Dipole Relaxation

Features of the dipole relaxation in polyesters of dienecarboxylic acids

1974 ◽  
Vol 16 (3) ◽  
pp. 631-637 ◽  
Author(s):  
L.V. Krasner
Keyword(s):  
Dipole Relaxation
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