Results 21 to 30 of about 1,217 (178)

Instabilities of a family of oblate stellar spheroids [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1997
We have examined the stability of a sequence of oblate elliptical galaxy models having the Stackel form suggested by Kuz'min & Kutuzov. We have employed the 2-integral DFs given by Dejonghe & de Zeeuw for which flattened non-rotating models are characterized by counter-streaming motion and are radially cool; we introduce net rotation in some ...
Sellwood, J. A., Valluri, M.
openaire   +2 more sources

Turbulence of Landward and Seaward Wind during Sea-Breeze Days within the Lower Atmospheric Boundary Layer

open access: yesAtmosphere, 2021
Reynolds stress anisotropy is estimated from the stress spheroids, based on 20 Hz ultrasonic anemometer measurements, performed in the coastal area of northern France, over a 1.5-year long period.
Sayahnya Roy   +3 more
doaj   +1 more source

The orbits about an oblate spheroid [PDF]

open access: yesČasopis pro pěstování matematiky a fysiky, 1938
Verf. diskutiert die hauptsächliche Perihelstörung eines Aufpunktes, der sich (in nicht allzu kleiner Entfernung) im Newtonschen Gravitationsfeld eines abgeplatteten inhomogenen Spheroids bewegt. Da das Feld nicht radialsymmetrisch ist, so hängt die Störung auch von der jeweiligen Bahnneigung ab.
openaire   +2 more sources

CSAKD: Determining Absolute Ligand Affinities From 19F NMR Chemical Shift Anisotropy

open access: yesAngewandte Chemie, Volume 138, Issue 33, 10 August 2026.
Affinity determination is crucial in drug discovery, yet remains difficult for weakly binding fragments. We introduce chemical shift anisotropy KD$K_{\text{D}}$ (CSAKD) by 19F$^{19}{\rm F}$ NMR relaxation experiments, a titration‐free method that requires no isotopic labeling.
Simon H. Rüdisser   +2 more
wiley   +2 more sources

Shape effect of Co nanoparticles on the electric and magnetic properties of Co–SiO2 nanogranular films

open access: yesAIP Advances, 2022
Controlling the magnetic anisotropy of nanoparticles is a crucial but challenging step for developing new magnetic functions. Here, we demonstrate a simple approach to controlling the shape of Co nanoparticles in a Co-SiO2 nanogranular film from oblate ...
Hanae Kijima-Aoki   +7 more
doaj   +1 more source

A New Modified Helmholtz Equation for the Expression of the Gravity Gradient and the Intensity of an Electrostatic Field in Spherical Harmonics

open access: yesMathematics, 2023
In this work, it is shown that the geometry of a gravity field generated by a spheroid with low eccentricity can be described with the help of a newly modified Helmholtz equation.
Gerassimos Manoussakis
doaj   +1 more source

An Efficient Computational Technique for the Electromagnetic Scattering by Prolate Spheroids

open access: yesMathematics, 2022
In this paper we present an efficient Matlab computation of a 3-D electromagnetic scattering problem, in which a plane wave impinges with a generic inclination onto a conducting ellipsoid of revolution.
Ludovica Tognolatti   +3 more
doaj   +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

AXISYMMETRIC DYNAMIC BEHAVIOUR OF THIN OBLATE SHELLS

open access: yesJournal of Engineering
This paper presents a theoretical investigation of the axisymmetric free vibrations of an isotropic thin oblate spheroid shell. The analysis depends on the Rayliegh – Ritz's method. The non – shallow shell theory is used for the analysis.
Ahmed A. Al – Rajihy   +2 more
doaj   +1 more source

Theoretical bases of the geometrical identification of a common inter-radar space [PDF]

open access: yesZbornik Radova: Geografski institut "Jovan Cvijić", 2013
A condition for the successful inter-radar comparison between two radars is the timespace synchronization in the middle region where the comparison is the most effective.
Vukovic Zlatko R.   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy