نتایج جستجو برای: crystal preferred orientations

تعداد نتایج: 241114  

2017
Linh Nguyen Ngoc Trung Vu Quoc Hoan Duong Quoc Manh Vu Quoc Luong Truong Minh Chien Thang Pham Luc Van Meervelt

The title compound, C11H7NS2, was prepared in high yield (87%) using a solvent-free microwave-assisted synthesis. The structure shows whole-mol-ecule disorder with occupancies for two orientations (A and B) of 0.4884 (10) and 0.5116 (10), respectively. The thio-phene and benzo-thia-zole rings are almost planar and make dihedral angles of 10.02 (18) and 12.54 (19)° for orientations A and B, resp...

Journal: :Journal of neurophysiology 2009
Walter J Jermakowicz Xin Chen Ilya Khaytin A B Bonds Vivien A Casagrande

Coincident spikes have been implicated in vision-related processes such as feature binding, gain modulation, and long-distance communication. The source of these spike-time correlations is unknown. Although several studies have proposed that cortical spikes are correlated based on stimulus structure, others have suggested that spike-time correlations reflect ongoing cortical activity present ev...

2016
Aleksandra Mitrovic Pablo P. L. Tinio Helmut Leder

One of the key behavioral effects of attractiveness is increased visual attention to attractive people. This effect is often explained in terms of evolutionary adaptations, such as attractiveness being an indicator of good health. Other factors could influence this effect. In the present study, we explored the modulating role of sexual orientation on the effects of attractiveness on exploratory...

2016
Ting Liu Jicai Zhang Xujun Su Jun Huang Jianfeng Wang Ke Xu

Wurtzite AlN is widely used for deep ultraviolet optoelectronic devices (DUV), which are generally grown along the [0001]-direction of the wurtzite structure on currently available substrates. However, huge internal electrostatic fields are presented within the material along [0001] axis induced by piezoelectric and spontaneous polarization, which has limited the internal quantum efficiency of ...

Journal: :Computational Mechanics 2022

Abstract This work is concerned with synthetic microstructure models of polycrystalline materials. Once a representation the generated, individual grains need to be furnished suitable crystal orientations, matching specific orientation distribution. We introduce novel method for this task, which permits prescribe orientations based on tensorial Fourier coefficients. compact gives rise texture c...

Journal: :Journal of neurophysiology 1978
M P Stryker H Sherk A G Leventhal H V Hirsch

1. The early visual experience of nine cats was restricted to viewing horizontal or vertical lines inside opaque goggles. 2. When the kittens were 3-4 mo old, extracellular recordings were made in the primary visual cortex. To obtain a representative sample of cortical cells, units were studied at regularly spaced intervals along the course of electrode penetrations traveling oblique to the cor...

2012
Joel T. Mague David J. Vumbaco Michael N. Kammer Lynn V. Koplitz

In the title compound, C(7)H(7)N(2) (+)·I(-), the cation is located on a site of 4mm symmetry and is thus disordered about the fourfold axis so that there are two perpendicular orientations of the six-membered ring and four rotational orientations of the {-NH(3) (+)} group. In the crystal, there are two layers perpendicular to the c axis, each containing iodide ions and the {-NH(3) (+)} portion...

2005
Laura Hernández Claire Pinettes

We have studied by Monte Carlo simulations the thermal behaviour of a small (N = 13 particles) cluster described by a Heisenberg model, including nearestneighbour ferromagnetic interactions and radial surface anisotropy, in an applied magnetic field. We have studied three different lattice structures: hexagonal close packed, face centered cubic and icosahedral. We show that the zero-field therm...

2017
Paul Kautny Thomas Schwartz Berthold Stöger Johannes Fröhlich

9,90-(2,5-Dibromo-1,4-phenylene)bis[9H-carbazole] (1) crystallizes as a category I order–disorder (OD) structure composed of non-polar layers of one kind with B2/m(1)1 layer symmetry. The crystals are made up of the two polytypes with a maximum degree of order (MDO). The monoclinic MDO1 polytype (B21/d) possesses an orthorhombic B-centered lattice and appears in two orientations, which are rela...

Journal: :Physical review. E 2016
M V Rasna K P Zuhail U V Ramudu R Chandrasekar Surajit Dhara

We study the dynamics of electric field driven multiaxis electro-orientation of birefringent microsheets in both the isotropic and nematic phases of a liquid crystal. For a fixed direction of applied field in the isotropic phase, there are two critical fields above which the microsheets show two orientations. In the nematic phase, it shows three rotations in both planar and homeotropic cells. T...

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