Cross-relaxation and Cross-correlation Parameters in NMR

2017 ◽  
Keyword(s):  
Cross Correlation ◽  
Cross Relaxation ◽  
Correlation Parameters

Transferred cross-relaxation and cross-correlation in NMR: effects of intermediate exchange on the determination of the conformation of bound ligands

2003 ◽  
Vol 163 (2) ◽  
pp. 199-207 ◽  
Author(s):  
Sapna Ravindranathan ◽  
Jean-Maurice Mallet ◽  
Pierre Sinay ◽  
Geoffrey Bodenhausen
Keyword(s):  
Cross Correlation ◽  
Cross Relaxation

Cross-Relaxation and Cross-Correlation Mechanisms Leading to Spin Polarization*

1992 ◽  
Vol 1 (Part_2) ◽  
pp. 119-129
Author(s):  
Yu. P. Tsentalovich ◽  
A. V. Yurkovskaya ◽  
A. A. Frantsev ◽  
A. B. Doctorov ◽  
R. Z. Sagdeev
Keyword(s):  
Spin Polarization ◽  
Cross Correlation ◽  
Cross Relaxation

Cross-Relaxation and Cross-Correlation Mechanisms Leading to Spin Polarization*

1993 ◽  
Vol 182 (Part_1_2) ◽  
pp. 119-129 ◽  
Author(s):  
Yu. P. Tsentalovich ◽  
A. V. Yurkovskaya ◽  
A. A. Frantsev ◽  
A. B. Doctorov ◽  
R. Z. Sagdeev
Keyword(s):  
Spin Polarization ◽  
Cross Correlation ◽  
Cross Relaxation

Directed Transport in Symmetrically Periodic Potentials Induced by Cross-Correlation among Colored Gaussian Noises

2019 ◽  
Vol 20 (2) ◽  
pp. 105-114
Author(s):  
Igor Alexandrovich Knyaz’
Keyword(s):  
Correlation Time ◽  
Cross Correlation ◽  
Periodic Potential ◽  
Brownian Particle ◽  
System Parameters ◽  
Directed Transport ◽  
Periodic Potentials ◽  
Spatially Periodic ◽  
Correlation Parameters

AbstractWe study the noise induced directed transport of an inertial Brownian particle moving in a symmetric spatially periodic potential and is subjected to correlated colored noises. Under the assumption of small correlation times of colored fluctuations we obtain an analytical expression for resulting current in overdamped systems. Our analytical and numerical calculations indicate the directed current is controlled by the correlation parameters. It has been pointed out that the nonzero correlation time makes an important contribution to current only at large enough values of noise intensities. The role of other system parameters is investigated from the viewpoint of optimization the current amplitude.

Artefact in 20Å-Resolution Electron Images of Negatively Stained Twodimensional Membrane Protein Crystals

1982 ◽  
Vol 40 ◽  
pp. 92-93
Author(s):  
Douglas L. Dorset ◽  
Barbara Moss
Keyword(s):  
Electron Scattering ◽  
Cross Correlation ◽  
Transmission Function ◽  
Group Symmetry ◽  
Asymmetric Structure ◽  
Object Model ◽  
Phase Object ◽  
Computing Systems ◽  
Resolution Electron ◽  
Plane Group

A number of computing systems devoted to the averaging of electron images of two-dimensional macromolecular crystalline arrays have facilitated the visualization of negatively-stained biological structures. Either by simulation of optical filtering techniques or, in more refined treatments, by cross-correlation averaging, an idealized representation of the repeating asymmetric structure unit is constructed, eliminating image distortions due to radiation damage, stain irregularities and, in the latter approach, imperfections and distortions in the unit cell repeat. In these analyses it is generally assumed that the electron scattering from the thin negativelystained object is well-approximated by a phase object model. Even when absorption effects are considered (i.e. “amplitude contrast“), the expansion of the transmission function, q(x,y)=exp (iσɸ (x,y)), does not exceed the first (kinematical) term. Furthermore, in reconstruction of electron images, kinematical phases are applied to diffraction amplitudes and obey the constraints of the plane group symmetry.

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