نتایج جستجو برای: anisotropic effect

تعداد نتایج: 1676833  

2006
Olivier Salvado David L. Wilson

The partial volume effect is a significant limitation in medical imaging that results in blurring when the boundary between two structures of interest falls in the middle of a voxel. A new anisotropic diffusion method allows one to create interpolated 3D images corrected for partial volume, without enhancement of noise. After a zero-order interpolation, we apply a modified version of the anisot...

Journal: :The Journal of chemical physics 2015
Tijs Karman Evangelos Miliordos Katharine L C Hunt Gerrit C Groenenboom Ad van der Avoird

We present quantum mechanical calculations of the collision-induced absorption spectra of nitrogen molecules, using ab initio dipole moment and potential energy surfaces. Collision-induced spectra are first calculated using the isotropic interaction approximation. Then, we improve upon these results by considering the full anisotropic interaction potential. We also develop the computationally l...

Journal: :Physical review letters 2003
Michael Buballa Jirí Hosek Micaela Oertel

The analysis of color-superconducting two-flavor deconfined quark matter at moderate densities is extended to include a particular spin-1 Cooper pairing of those quarks which do not participate in the standard spin-0 diquark condensate. (i) The relativistic spin-1 gap delta(') implies spontaneous breakdown of rotation invariance manifested in the form of the quasifermion dispersion law. (ii) Th...

2017
Oliver Reimer Daniel Meier Michel Bovender Lars Helmich Jan-Oliver Dreessen Jan Krieft Anatoly S. Shestakov Christian H. Back Jan-Michael Schmalhorst Andreas Hütten Günter Reiss Timo Kuschel

A thermal gradient as the driving force for spin currents plays a key role in spin caloritronics. In this field the spin Seebeck effect (SSE) is of major interest and was investigated in terms of in-plane thermal gradients inducing perpendicular spin currents (transverse SSE) and out-of-plane thermal gradients generating parallel spin currents (longitudinal SSE). Up to now all spincaloric exper...

2017
Mingzhi Wang Jianjun Wu He Fan Zengkun Zhang Hongfei Wu

In this paper, a novel inverse computation approach is proposed to extract the anisotropic plasticity parameters of metal materials by using inverse analysis and dual indentation tests. Based on dimensional analysis and extensive finite element (FE) simulations, four independent dimensionless functions are derived to correlate the anisotropic plasticity parameters with material responses in dua...

Journal: :Nature communications 2014
I Fina X Marti D Yi J Liu J H Chu C Rayan-Serrao S Suresha A B Shick J Zelezný T Jungwirth J Fontcuberta R Ramesh

Recent studies in devices comprising metal antiferromagnets have demonstrated the feasibility of a novel spintronic concept in which spin-dependent phenomena are governed by an antiferromagnet instead of a ferromagnet. Here we report experimental observation of the anisotropic magnetoresistance in an antiferromagnetic semiconductor Sr2IrO4. Based on ab initio calculations, we associate the orig...

2015
Amanda K. W. Buck Zhaohua Ding Christopher P. Elder Theodore F. Towse Bruce M. Damon Christophe Lenglet

PURPOSE To assess the effect of anisotropic smoothing on fiber tracking measures, including pennation angle, fiber tract length, and fiber tract number in the medial gastrocnemius (MG) muscle in healthy subjects using diffusion-weighted magnetic resonance imaging (DW-MRI). MATERIALS AND METHODS 3T DW-MRI data were used for muscle fiber tractography in the MG of healthy subjects. Anisotropic s...

Journal: :Int. J. Math. Mathematical Sciences 2012
Vandana Gupta Satya Bir Singh

Steady-state creep response in a rotating disc made of Al-SiC particle composite having linearly varying thickness has been carried out using isotropic/anisotropic Hoffman yield criterion and results are comparedwith those using vonMises yield criterion/Hill’s criterion ignoring difference in yield stresses. The steady-state creep behavior has been described by Sherby’s creep law. The material ...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1999
N Kleeorin I Rogachevskii

The evolution of the magnetic helicity tensor for a nonzero mean magnetic field and for large magnetic Reynolds numbers in an anisotropic turbulence is studied. It is shown that the isotropic and anisotropic parts of the magnetic helicity tensor have different characteristic times of evolution. The time of variation of the isotropic part of the magnetic helicity tensor is much larger than the c...

Journal: :Optics express 2011
Qingkun Liu Theodor Asavei Taewoo Lee Halina Rubinsztein-Dunlop Sailing He Ivan I Smalyukh

We describe a simple microrheology method to measure the viscosity coefficients of lyotropic liquid crystals. This approach is based on the use of a rotating laser-trapped optically anisotropic microsphere. In aligned liquid crystals that have negligible effect on trapping beam's polarization, the optical torque is transferred from circularly polarized laser trapping beam to the optically aniso...

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