• Rates of change in white matter structure as indexed by Tract-Based Spatial Statistics (TBSS) of fractional anisotropy were compared between treated and untreated patients. (nih.gov)
  • Microscopic fractional anisotropy (µFA) is a diffusion-weighted magnetic resonance imaging (dMRI) metric that is sensitive to neuron microstructural features without being confounded by the orientation dispersion of axons and dendrites. (uwo.ca)
  • Microscopic fractional anisotropy (µFA) is a dMRI metric that quantifies the asymmetry of water diffusivity across different directions. (uwo.ca)
  • Here we performed a voxel-based analysis of fractional anisotropy in three classes of subjects: Alzheimer's disease patients, Mild Cognitive Impairment patients, and healthy controls. (unige.ch)
  • Bilateral intersection of hippocampal cingulum and parahippocampal gyrus (referred as parahippocampal cingulum) is the region that best discriminates Alzheimer's disease fractional anisotropy values, resulting in an accuracy of 93% for discriminating between Alzheimer's disease and controls, and 90% between Alzheimer's disease and Mild Cognitive Impairment. (unige.ch)
  • With allopregnanolone, there was also evidence of significantly increased fractional anisotropy (FA), a measure of the integrity of brain white matter. (medscape.com)
  • Physicists from University of California, Berkeley reported about their detection of the cosmic anisotropy in cosmic microwave background radiation in 1977. (wikipedia.org)
  • Cosmic anisotropy has also been seen in the alignment of galaxies' rotation axes and polarization angles of quasars. (wikipedia.org)
  • 300. The analysis detects statistically significant signals of anisotropy inconsistent with an isotropic cosmic microwave background in some of the foreground-cleaned maps. (ku.edu)
  • Results are reported from the first flight of a new balloon-borne instrument, BAM (Balloon-borne Anisotropy Measurement), designed to search for cosmic microwave background (CMB) anisotropy. (harvard.edu)
  • These equations allow to follow the time evolution of the cosmic microwave background anisotropies at all angular scales from the early epoch, when the cosmological perturbations were generated, to the present, through the recombination era. (e-booksdirectory.com)
  • abstract = "First results of a cosmic microwave background (CMB) anisotropy experiment conducted at the Observatorio del Teide (Tenerife, Spain) are presented. (manchester.ac.uk)
  • Unipole sonic tools can evaluate azimuthal heterogeneity and anisotropy. (onepetro.org)
  • Azimuthal anisotropy (v(2)) and two-particle angular correlations of high p(T) charged hadrons have been measured in Au+Au collisions at roots(NN) = 130 GeV for transverse momenta up to 6 GeV/c, where hard processes are expected to contribute significantly. (ucl.ac.uk)
  • In this study, we propose a method for analyzing azimuthal anisotropy of the megaregolith. (uu.nl)
  • We use the S-wave recordings retrieved from DMSI-S to analyze azimuthal anisotropy. (uu.nl)
  • 3D software tools like Slide3, provide you with the capability to realistically consider anisotropy. (rocscience.com)
  • This observed fabric is likely to be widespread and representative of fabrics in other ice streams and large glaciers, suggesting it is essential to consider anisotropy in data-driven models to correctly predict ice loss and future flow in these regions. (bas.ac.uk)
  • An "axis of anisotropy" is defined as the axis along which isotropy is broken (or an axis of symmetry, such as normal to crystalline layers). (wikipedia.org)
  • Since any magnetic anisotropy is forbidden by symmetry within the easy-plane on a classical level and the simple lattice structure of Bi 2 CuO 4 rules out any other types of in-plane anisotropy found in other cuprates, the observed anisotropy is attributed to a pure quantum effect. (nist.gov)
  • We assume the elastic constants of olivine and orthopyroxene with hexagonal symmetry and use a damped, iterative least squares approach to account for the nonlinear behavior of splitting when considering three-dimensional ray propagation and distributions of anisotropy. (columbia.edu)
  • In this context, the role of symmetry/shape anisotropy of both the nanomaterials and biological interfaces in their mutual interaction, is a relatively unaddressed issue. (lu.se)
  • This anisotropy is associated with low symmetry of the β -Ga 2 O 3 crystal structure that leads to unusual kind of one-dimensional confinement of positrons even in the delocalized state in the lattice. (harvard.edu)
  • Magnetic anisotropy reversal driven by structural symmetry-breaking in monolayer α-RuCl 3 . (bvsalud.org)
  • Look up anisotropy or anisotropic in Wiktionary, the free dictionary. (wikipedia.org)
  • Many crystals are anisotropic to light ("optical anisotropy"), and exhibit properties such as birefringence. (wikipedia.org)
  • The "Consider 3D Anisotropy" method imports the dip and dip direction at each segment along the anisotropic surface. (rocscience.com)
  • Upon clicking on the pencil to edit the function, you will see the usual Generalized Anisotropic Strength Function dialog, with the additional 3D Anisotropy Handling dropdown, where you can select how you want the anisotropy to be considered. (rocscience.com)
  • DTI allows clinicians to look at anisotropic diffusion in white-matter tracts, but it is limited in its ability to demonstrate spatial and directional anisotropy. (medscape.com)
  • Topics covered: the thermal history of the universe, linear perturbation theory, theory of CMBR temperature anisotropies and the inflationary generation of perturbation. (e-booksdirectory.com)
  • Diffusion tensor imaging can be used to measure anisotropy per voxel and provides directional information relevant for magnetic resonance tractography or fiber tracking in vivo. (medscape.com)
  • For nonzero net angular momentum, the Walker breakdown occurs at a critical anisotropy gradient significantly depending on the second anisotropy and interfacial Dzyaloshinkii-Moriya interaction, which is highly appreciated for further experiments including the materials selection and device geometry design. (arxiv.org)
  • Oscillating gradient spin echo (OGSE) dMRI, implemented by varying the oscillating gradient frequency, and microscopic anisotropy (μA) dMRI, implemented via tensor valued diffusion encoding, may provide additional insight by increasing sensitivity to smaller spatial scales and disentangling fiber orientation dispersion from true microstructural changes, respectively. (bepress.com)
  • Test-retest reproducibility of in vivo oscillating gradient and microscopic anisotropy diffusion MRI in mice at 9.4 Tesla" PLoS ONE Vol. 16 Iss. (bepress.com)
  • B 124, 154-164 (1997) +} {+ reference: Tjandra N, Garrett DS, Gronenborn AM, Bax A, Clore GM, Defining long range order in NMR structure determination from the dependence of heteronuclear relaxation times on rotational diffusion anisotropy. (lu.se)
  • Experimental and numerical investigation of the engineering properties of a Utah coal considering the effect of anisotropy due to cleats. (cdc.gov)
  • Seismic anisotropy is the variation of seismic wavespeed with direction. (wikipedia.org)
  • Seismic anisotropy is an indicator of long range order in a material, where features smaller than the seismic wavelength (e.g., crystals, cracks, pores, layers, or inclusions) have a dominant alignment. (wikipedia.org)
  • Using a minimal theoretical model, we can then link the sign reversal of the inductance magnetochiral anisotropy to the so-called 0−π-like transition, a predicted but still elusive feature of multichannel junctions. (nature.com)
  • Effect of Rashba and Dresselhaus spin-orbit coupling on supercurrent rectification and magnetochiral anisotropy of ballistic Josephson junctions. (nature.com)
  • Magnetic tunnel junctions with perpendicular anisotropy form the basis of the spin-transfer torque magnetic random-access memory (STT-MRAM), which is nonvolatile, fast, dense, and has quasi-infinite write endurance and low power consumption. (spintec.fr)
  • It is also argued that the correlation among structures at different frequencies, the comparison of the power spectrum at different frequencies and the galactic latitude dependence of the anisotropies are not yet proofs in favour of either a cosmological or Galactic origin. (iac.es)
  • The temperature dependence of the shielding anisotropy is found to be 4 times stronger than that of the isotropic shielding. (lu.se)
  • Here we demonstrate a sign reversal of the Josephson inductance magnetochiral anisotropy, a manifestation of the supercurrent diode effect. (nature.com)
  • On the other hand, if we take into account rotational dust emission, for instance, a frequency independence of anisotropies in the microwave range may be obtained. (iac.es)
  • Despite some scatter in data, the paper presents correlations to estimate strength anisotropy for Norwegian clays. (sintef.no)
  • We use Monte Carlo methods to simulate the influence of Brownian rotation on the magnetic properties of a system of single-domain magnetic nanoparticles with cubic and uniaxial magnetic anisotropies. (bris.ac.uk)
  • Influence of anisotropy of a single l. (ugent.be)
  • Maziarka P, Prins W, Ronsse F. Influence of anisotropy of a single large wood particle on the intrinsic gas flow during simultaneous drying and pyrolysis. (ugent.be)
  • Magnetic anisotropy, for example, may occur in a plasma, so that its magnetic field is oriented in a preferred direction. (wikipedia.org)
  • This intermolecular contribution to hydrogen-bond geometry in a quantitative way even for to the shielding tensor is due to induced electronic currents in condensed phases.8-12 To fully capitalize on these theoretical nearby molecules and to the perturbing effect of intermolecular advances, one would like to experimentally determine the interactions on the electron distribution and nuclear geometry shielding anisotropy in liquids. (lu.se)
  • Our findings shed new light on the role of Fermi velocity anisotropy in the optical response of Dirac semimetals and open up novel polarization-sensitive functionalities, such as photodetection and light modulation. (arxiv.org)
  • Our observation of a spin flop transition at a small field of 0.4 Tesla indicates the existence of a small anisotropy within the easy plane. (nist.gov)
  • We find that both the β -Ga 2 O 3 lattice and the considered defects exhibit unusually strong anisotropy in their Doppler broadening signals. (harvard.edu)
  • This leads to the possibility that under some particular, but not impossible, conditions all the microwave background radiation anisotropies may be due to Galactic foregrounds rather than cosmological in origin. (iac.es)
  • In this work, we propose to use the voltage-controlled magnetic anisotropy gradient as an excitation source to drive the domain wall motion in ferrimagnets. (arxiv.org)
  • The ultrafast wall motion under the anisotropy gradient is predicted theoretically based on the collective coordinate theory, which is confirmed by the atomistic micromagnetic simulations. (arxiv.org)
  • New calculations of the Galactic contamination over microwave background radiation anisotropies are carried out. (iac.es)
  • Assuming the anisotropy arises due to residual foreground contamination, we estimate the residual foreground power in the maps. (ku.edu)
  • Anisotropy measurements reveal the average angular displacement of the fluorophore that occurs between absorption and subsequent emission of a photon. (wikipedia.org)
  • It just so happens that (in a vacuum at least) the amount of the length contraction exactly compensates for any timing difference down the orthogonal arms of an interferometer due to the anisotropy in the speed of light that might exist in a moving reference frame, thus making detection of the anisotropy (and thus the motion through the Aether) impossible [4]. (scirp.org)
  • Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe 2 . (nature.com)
  • Frequently in practice the effect of anisotropy is displayed together with that of layering or inhomogeneities. (earthdoc.org)
  • The model suggests a different way to address the effect of anisotropy in Rashba systems. (arxiv.org)
  • Anisotropy (/ˌænaɪˈsɒtrəpi, ˌænɪ-/) is the structural property of non-uniformity in different directions, as opposed to isotropy. (wikipedia.org)
  • We apply the method to template-cleaned 3- and 5-years Wilkinson Microwave Anisotropy Probe-Differencing Assembly maps. (ku.edu)
  • Physicists use the term anisotropy to describe direction-dependent properties of materials. (wikipedia.org)
  • Disease or injury can alter the neuron's shape and properties, reducing anisotropy, and thus µFA may potentially serve as a surrogate biomarker of injury or disease in neuroimaging. (uwo.ca)
  • A benchmark stability calculation has been done to illustrate the overall impact of various anisotropy factors on the factor of safety. (sintef.no)
  • The building block of STT-MRAM is a cell with high TMR for good readability, high spin-transfer torque efficiency for good writability, and high magnetic anisotropy for good thermal stability and therefore memory retention. (spintec.fr)
  • The synthetic method allows for both chemical and physical anisotropy such as the length of hydrophobic block and 3D shapes with high controllability. (aps.org)
  • Accounting for anisotropy can be a challenging, yet critical component of your analysis, as it will more realistically represent the ground conditions. (rocscience.com)
  • This is a pure 2D analysis where the 2D section doesn't know about the 3D anisotropy around it. (rocscience.com)
  • Thus, this timing analysis confirms that there is a light speed anisotropy in a reference frame that is moving through space, indicating the presence of a preferred Aether reference frame through which the Earth is moving. (scirp.org)
  • In experiments on wood, anisotropy related to the fibre structure was studied. (lu.se)
  • These global products have been used to create spatially and temporally complete snow-free reflectance anisotropy models, surface albedo quantities and Nadir BRDF-Adjusted Reflectances (NBAR) to support climate and biogeochemical modeling efforts. (confex.com)
  • Therefore, it seemed impossible to detect any light speed anisotropy and speed through the Aether by using an interferometer. (scirp.org)