نتایج جستجو برای: planar anisotropy
تعداد نتایج: 97892 فیلتر نتایج به سال:
diffusion weighted imaging uses the signal loss associated with the random thermal motion of water molecules in the presence of magnetic field gradients to derive a number of parameters that reflect the translational mobility of the water molecules in tissues. with a suitable experimental set-up, it is possible to calculate all the elements of the local diffusion tensor (dt) and derived paramet...
The discovery of the planar Hall effect in topological semimetals has generated extensive research interest recently. We present studies on Cu intercalated type-II Dirac semimetal PdTe2 order to understand role chiral anomaly. observed a positive field dependence electrical resistivity both perpendicular and parallel directions, causing non-zero anisotropy. signal anisotropic oscillate with in-...
This work addresses the question of the identification of the excited states that are mainly responsible for the magnitude and nature of the magnetic anisotropy in high-spin mononuclear transition metal complexes. Only few states are actually responsible for the single ion magnetic anisotropy, and these states can be anticipated from rather simple rules. We show that in high-spin complexes atom...
We performed in vivo diffusion tensor imaging (DTI) in a total of 33 patients with brain tuberculomas (BT). Thirteen of them had surgical excision of the lesion as it was clinically indicated, and in these samples matrix metalloproteinase-9 (MMP-9) expression was quantified. We correlated the results of DTI indices like fractional anisotropy (FA), mean diffusivity (MD), linear anisotropy (CL), ...
The atomic resolution structure of Leishmania mexicana triosephosphate isomerase complexed with 2-phosphoglycolate shows that this transition state analogue is bound in two conformations. Also for the side chain of the catalytic glutamate, Glu(167), two conformations are observed. In both conformations, a very short hydrogen bond exists between the carboxylate group of the ligand and the cataly...
High-resolution microscopic magnetic resonance imaging (μMRI) and diffusion tensor imaging (DTI) were performed to characterize brain structural abnormalities in a mouse model of mucopolysaccharidosis type VII (MPS VII). Microscopic magnetic resonance imaging demonstrated a decrease in the volume of anterior commissure and corpus callosum and a slight increase in the volume of the hippocampus i...
Dynamics of microparticles in isotropic liquids by transducing the energy of an applied electric field have been studied for decades. Recently, such studies in anisotropic media like liquid crystals have opened up new perspectives in colloid science. Here, we report studies on ac-electric-field-driven dynamics of microsheets in nematic liquid crystals. In planar aligned liquid crystals, with ne...
We study guided optical modes of a planar plasmonic waveguide filled with a generic anisotropic medium. In particular, we show that both surface and oscillatory modes exist for such waveguides and find their numbers for two specific forms of the anisotropy tensor. We also show that lossless waveguides, characterized by a diagonal permittivity tensor, support simultaneously both the forward and ...
The orientational distribution and rotational dynamics of planar perylene molecules incorporated into spherical vesicles of palmitoyl-δ-9-oleoyl(16:0,18:1)phophatidylcholine (POPC) was studied using time-resolved fluorescence anisotropy. The experimental anisotropy decay curves were analyzed using a global target approach. Here, anisotropy curves obtained at six temperatures above the gel-lamel...
In lateral quantum dots, the combined effect of both Dresselhaus and Bychkov-Rashba spin-orbit coupling is equivalent to an effective magnetic field +/- B(SO) which has the opposite sign for s(z)= +/- 1/2 spin electrons. When the external magnetic field is perpendicular to the planar structure, the field B(SO) generates an additional splitting for electron states as compared to the spin splitti...
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