Results 31 to 40 of about 28,814 (156)

Preferential orientation of tracer spheroids in turbulent channel flow

open access: yesTheoretical and Applied Mechanics Letters, 2019
: Axis-symmetric spheroids, such as rod-like and disk-like particles, have been found to orient preferentially in near-wall turbulence by both experiment and numerical simulation.
Yucheng Jie   +3 more
doaj   +1 more source

Axi-symmetric motion of a porous approximate sphere in an approximate spherical container

open access: yesArchives of Mechanics, 2013
The creeping motion of a porous approximate sphere at the instant it passes the center of an approximate spherical container with Ochoa-Tapia and Whitaker’s stress jump boundary condition has been investigated analytically.
D. Srinivasacharya, M. Krishna Prasad
doaj   +1 more source

Pollen Morphology of Crucianella L. (Rubiaceae) Based on Light and Scanning Electron Microscope Data and Implications for Taxonomy

open access: yesMicroscopy Research and Technique, EarlyView.
This study provides the palynological analysis of 12 Crucianella L. taxa using LM and SEM. Variations in pollen size, aperture number, and exine ornamentation were identified as key traits, demonstrating their taxonomic value for distinguishing closely related species and subspecies within the genus. ABSTRACT Crucianella L.
Sevcan Celenk   +3 more
wiley   +1 more source

Vibration Characteristics Oblate Shell "With and Without Framed Structure"

open access: yesAl-Khawarizmi Engineering Journal, 2010
This paper presents the results of investigating the vibrational characteristics of oblate dish with and without framed structure . A finite element method, was applied to the dynamic analysis of oblate spheroidal shell.
Kadhim H. Ghlaim, Hatem R. Waseem
doaj   +2 more sources

An Efficient Computation of Effective Ground Range Using an Oblate Earth Model

open access: yesAbstract and Applied Analysis, 2014
An effcient method is presented to calculate the ground range of a ballistic missile trajectory on a nonrotating Earth. The spherical Earth model does not provide good approximation of distance between two locations on the surface of Earth.
Dalal A. Maturi   +3 more
doaj   +1 more source

A new scale‐selective measure of curvature for meteorological fields

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We introduce a novel diagnostic called curvature using radial variation (CURV) that quantifies the local cyclonic or anticyclonic curvature of mean‐sea‐level pressure or geopotential height gridded fields over selected scales. A depiction of how CURV values relate to differing cyclonic curvature is shown in the figure.
Nigel Roberts   +3 more
wiley   +1 more source

Geometric Nonuniformity Localizes Valence Orbitals in Gold Clusters: Case Study on [Au23(SC6H11)16]–

open access: yesAngewandte Chemie, Volume 138, Issue 30, 20 July 2026.
The electronic structure of [Au23(SC6H11)16]–, a monolayer‐protected gold cluster with a nonuniform Au13 core, was investigated. Anion photoelectron spectroscopy and density functional theory calculations revealed that the highest occupied molecular orbital (HOMO) and HOMO‐1 are localized on the two triangular Au3 units at the ends of the Au13 core ...
Yosuke Asami   +3 more
wiley   +2 more sources

LOCAL STEREOLOGY OF EXTREMES

open access: yesImage Analysis and Stereology, 2012
Local stereology uses information obtained from central sections passing through a reference point of the particle.The aim of this paper is to investigate the prediction of extremes of shape and size parameters based on the central sections.
Zbynek Pawlas
doaj   +1 more source

Revisiting Long-Time Dynamics of Earth’s Angular Rotation Depending on Quasiperiodic Solar Activity

open access: yesMathematics, 2023
Having taken into account the nonsymmetric form of Earth’s surface (which is an oblate spheroid as the first approximation, with oblateness of approx.
Sergey Ershkov   +2 more
doaj   +1 more source

Calculation magnetic field for oblate spheroid in rectangular coordinate [PDF]

open access: yes, 2010
Celem pracy jest wyznaczenie pola magnetycznego wewnątrz sferoidy spłaszczonej umieszczonej w jednorodnym polu magnetycznym oraz na zewnątrz sferoidy spłaszczonej jednorodnie namagnesowanej.
Skowron, M., Cieśla, A.
core  

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