نتایج جستجو برای: spherical cap or a hemisphere
تعداد نتایج: 13796117 فیلتر نتایج به سال:
The geometric curvature of nanoscale magnetic shells brings about curvature-induced anisotropy and Dzyaloshinskii–Moriya interaction (DMI). Here, we derive equations to describe the profile vortex state in a spherical cap. We demonstrate that azimuthal component magnetization acquires finite tilt at edge cap, which results increase surface energy. This is different compared case closed shell, w...
Motivated by the analysis of electrochemical growth of metallic nanowires from solution, we studied ion fluxes near nanoelectrodes in a binary symmetric electrolyte on the basis of the modified Poisson-Nernst-Planck equations in the strongly nonlinear region at large applied ac voltage. For an approximate calculation of the electric field near the nanowire tip, concentric spherical blocking ele...
Elevations from the Mars Orbiter Laser Altimeter (MOLA) have been used to construct a precise topographic map of the martian north polar region. The northern ice cap has a maximum elevation of 3 kilometers above its surroundings but lies within a 5-kilometer-deep hemispheric depression that is contiguous with the area into which most outflow channels emptied. Polar cap topography displays evide...
A new technique for continuation of the ground magnetic field caused by ionospheric currents to the ionosphere in spherical geometry is presented that makes use of elementary ionospheric current systems, which were introduced by Amm (1997) in extension of an earlier work by Fukushima (1976). The measured ground magnetic disturbance is expanded in terms of the ground magnetic effect of a spatial...
Analytical series solution is proposed for the transient boundary-value problem ofmultilayer heat conduction in r–h spherical coordinates. Spatially non-uniform, but time-independent, volumetric heat sources may exist in the concentric layers. Proposed solution is valid for any combination of homogenous boundary conditions of the first or second kind in the h -direction. However, inhomogeneous ...
Qin, T. 2016. Submicron Calcium Phosphate Spheres for Biomedical Applications: Synthesis and Use. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1446. 67 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9737-8. Calcium phosphate spheres as biomaterials have been attracting attention in recent years. Calcium phosphate occurs natura...
A spherical design is a point configuration on the sphere, which yields exact equal-weight quadrature formulae for polynomials up to a given degree. Until now only very specific constructions for spherical designs are known. We establish connections to spherical cap discrepancy and show some general discrepancy bounds. Furthermore, we reformulate the problem of constructing designs as an optimi...
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