نتایج جستجو برای: spherical cap or a hemisphere
تعداد نتایج: 13796117 فیلتر نتایج به سال:
In this paper, we introduce a new constrained mean curvature type flow for capillary boundary hypersurfaces in space forms. We show the exists all time and globally converges to spherical cap. Moreover, preserves volume of bounded domain enclosed by hypersurface decreases total energy. As by-product, give proof isoperimetric inequality star-shaped
Emission of spherical cesium-bearing particles from an early stage of the Fukushima nuclear accident
The Fukushima nuclear accident released radioactive materials into the environment over the entire Northern Hemisphere in March 2011, and the Japanese government is spending large amounts of money to clean up the contaminated residential areas and agricultural fields. However, we still do not know the exact physical and chemical properties of the radioactive materials. This study directly obser...
seed cap tightness is known to be highly associated with the low germinability of sugar beet fruits. despite, accomplishment of physiological phases of germination in germinating sugar beet seed with a tight cap, seedling emergence is usually suppress by the cap. as the seed coat (including the cap) is originated from ovary wall of the mother plant, seed cap tightness could be considered as one...
We present a statistical investigation of the effects interplanetary magnetic field (IMF) on hemispheric asymmetry in auroral currents. Nearly 6 years measurements from Swarm A and C satellites are analyzed. Bootstrap resampling is used to remove difference number samples IMF conditions between local seasons hemispheres. Currents stronger Northern Hemisphere (NH) than Southern (SH) for B NH (B ...
Quasi-Monte Carlo (QMC) methods exhibit a faster convergence rate than that of classic Monte Carlo methods. This feature has made QMC prevalent in image synthesis, where it is frequently used for approximating the value of spherical integrals (e.g., illumination integral). The common approach for generating QMC sampling patterns for spherical integration is to resort to unit square low discrepa...
Gaussian particles provide a flexible framework for modelling and simulating three-dimensional star-shaped random sets. In our framework, the radial function of the particle arises from a kernel smoothing, and is associated with an isotropic random field on the sphere. If the kernel is a von Mises–Fisher density, or uniform on a spherical cap, the correlation function of the associated random f...
Objective(s): The aim of the present study is to determine the effect of Chloramphenicol (CAP) on rat liver and small intestine. Effect of phenobarbital (PB) on CAP toxicity was also investigated. Materials and Methods: Rats were received CAP at doses of 0, 200, 400 and 600 mg/kg. Another group was pretreated with 80 mg/kg PB 30 min prior to administration of various doses...
A nominally at penny-shaped crack is subjected to a static loading. A perturbation method is developed for calculating the stress-intensity factors, based on an asymptotic analysis of the governing hypersingular boundary integral equation for the crack-opening displacement. Comparisons with known exact solutions for an inclined at elliptical crack and for a crack in the shape of a spherical cap...
Cells from the cap of the animal hemisphere of the early Xenopus embryo are determined to form ectodermal lineages. When these cells are explanted and cultured in the presence of various growth factors a change in fate to cells of mesodermal lineage can be observed. Proteins of the fibroblast growth factor (FGF) family belong to this class of fate altering compounds. The ability of FGFs to chan...
It is proved that given H ≥ 0 and an embedded compact orientable constant mean curvature H surface M included in the half space z ≥ 0, not everywhere tangent to z = 0 along its boundary ∂M = γ ⊂ {z = 0}, the inequality H ≤ (min κ) ( min √ 1 − (κg/κ) ) is satisfied, where κ and κg are the geodesic curvatures of γ on z = 0 and on the surface M , respectively, if and only if M is a spherical cap o...
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