Results 11 to 20 of about 752 (212)

Surface gravity of rotating dumbbell shapes [PDF]

open access: yesAstrophysics and Space Science, 2021
We investigate the problem of determining the shape of a rotating celestial object - e.g., a comet or an asteroid - under its own gravitational field. More specifically, we consider an object symmetric with respect to one axis - such as a dumbbell - that rotates around a second axis perpendicular to the symmetry axis.
Wai-Ting Lam   +2 more
openaire   +3 more sources

Isosynchronous Paths on a Rotating Surface [PDF]

open access: yesThe American Mathematical Monthly, 2015
18 pages, 6 ...
openaire   +2 more sources

Surface Differential Rotation of Evolved Fast Rotators [PDF]

open access: yesSymposium - International Astronomical Union, 2004
Zeeman-Doppler Imaging enables one to estimate the short term temporal evolution of surface brightness and magnetic structures, under the effect of differential rotation. We present here spectropolarimetric observations secured between 1998 and 2002 for two evolved active stars: the K1 subgiant of the RS CVn system HR 1099 and the single FK Com giant ...
P. Petit   +13 more
openaire   +1 more source

Spherical Product Surfaces in E4

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012
In the present study we calculate the coefficients of the second fundamental form and curvature ellipse of spherical product surfaces in E4. Otsuki rotational surfaces and Ganchev-Milousheva rotational surfaces are the special type of spherical product ...
Bulca Betül   +3 more
doaj   +1 more source

Stability of Surface Motion on a Rotating Ellipsoid [PDF]

open access: yesCelestial Mechanics and Dynamical Astronomy, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Guibout, Vincent, Scheeres, Daniel J.
openaire   +2 more sources

Heat Transfer Characteristics of High Speed and Heavy Load Hydrostatic Bearing

open access: yesIEEE Access, 2019
This paper investigates the heat transfer characteristics of hydrostatic bearing in a 5m vertical lathe based on fluid-solid-heat coupling analysis.
Xiaodong Yu   +5 more
doaj   +1 more source

Investigation of weld defects and mechanical properties of dissimilar friction stir spot welded dual phase (DP600) steel and aluminum alloy (AA 7075-T6) plates

open access: yesEuropean Mechanical Science, 2022
DP600 steel and AA7075-T6 aluminium alloy plates were joined using the friction stir spot welding process. The effects of different tool rotational speeds on the mechanical properties, intermetallic compound formation and interface microstructure of ...
Mustafa Uğurlu, Ahmet Çakan
doaj   +1 more source

Algorithmic Design of Geometric Data for Molecular Potential Energy Surfaces

open access: yesAlgorithms, 2022
A code MolecGeom, based on algorithms for stepwise distortions of bond lengths, bond angles and dihedral angles of polyatomic molecules, is presented. Potential energy surfaces (PESs) are curated in terms of the energy for each molecular geometry.
Ahyssa R. Cruz, Walter C. Ermler
doaj   +1 more source

Quasi-seamless stitching for large-area micropatterned surfaces enabled by Fourier spectral analysis of moiré patterns

open access: yesNature Communications, 2023
The main challenge in preparing a flexible mold stamp using roll-to-roll nanoimprint lithography is to simultaneously increase the imprintable area with a minimized perceptible seam.
Woo Young Kim   +9 more
doaj   +1 more source

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