Results 1 to 10 of about 272,211 (167)
Effects of graded talar external rotation on distal tibial articular surface stress and contact pressure: a finite element study [PDF]
Frontiers in Sports and Active LivingBackgroundAbnormal talar biomechanics alter tibiotalar local mechanics and are implicated in several ankle-foot disorders. However, the relationship between graded talar external-rotation moments and local articular changes under controlled loading ...
Xinya Lan +13 more
doaj +2 more sources
The surface of non-linear rotation
Омский научный вестник, 2023 The paper considers a geometric scheme, a mathematical model and an algorithm for shaping a non-linear rotation surface. It is known that in Euclidean geometry and mechanics the transformation of rotation is linear, while distance and angle are its ...
K. L. Panchuk, T. M. Myasoyedova
doaj +1 more source
Rotating surface solitons [PDF]
Optics Letters, 2007 We introduce a novel type of surface waves that form at the edge of guiding structures consisting of several concentric rings. Such surface waves rotate steadily upon propagation and, in contrast to nonrotating waves, for high rotation frequencies they do not exhibit power thresholds for their existence. There exists an upper limit for the surface wave
Kartashov, Yaroslav V. +2 more
openaire +5 more sources
Polygons on a Rotating Fluid Surface [PDF]
Physical Review Letters, 2006 We report a novel and spectacular instability of a fluid surface in a rotating system. In a flow driven by rotating the bottom plate of a partially filled, stationary cylindrical container, the shape of the free surface can spontaneously break the axial symmetry and assume the form of a polygon rotating rigidly with a speed different from that of the ...
Jansson, Thomas +4 more
openaire +4 more sources
Surface Form Accuracy Evaluation in Abrasive Lapping of Single-Crystal Silicon Wafers
Frontiers in Materials, 2022 Silicon-based materials still dominate the current semiconductor industry for the foreseeable years such that it is needed in continuously developing the related advanced manufacturing technologies.
Zhengwei Wang, Yang Lei, Xiaofeng Wu
doaj +1 more source
Micro-interface temperature field of catalytic particle under self-rotation regulation [PDF]
E3S Web of Conferences, 2020 The micro-interface formed inside and on the surface of the catalytic particle is the place where the catalytic reaction proceeds. The micro-interface temperature is one of the important factors determining the reaction efficiency.
Xu Lei, Wang Hualin, Huang Yuan
doaj +1 more source
A New Approach to Rotational Weingarten Surfaces [PDF]
Mathematics, 2022 Weingarten surfaces are those whose principal curvatures satisfy a functional relation, whose set of solutions is called the curvature diagram or the W-diagram of the surface. Making use of the notion of geometric linear momentum of a plane curve, we propose a new approach to the study of rotational Weingarten surfaces in Euclidean 3-space.
Paula Carretero, Ildefonso Castro
openaire +3 more sources
A study of the rapid rotator ζ Aql: differential surface rotation?
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We report new, extremely precise photopolarimetry of the rapidly-rotating A0 main-sequence star ζ Aql, covering the wavelength range ∼400–900 nm, which reveals a rotationally-induced signal. We model the polarimetry, together with the flux distribution and line profiles, in the framework of Roche geometry with ω-model gravity ...
Ian D Howarth +3 more
openaire +4 more sources
Orthopaedic Surgery, 2021 Objective Complex base fractures of the fifth metacarpal bone and dislocation of the fifth carpometacarpal joint are more prone to internal rotation deformity of the little finger sequence after fixation with a transarticular plate.
Yimin Qi +7 more
doaj +1 more source
Effect of Permittivity on the Electric-Field-Driven Rotation Dynamics in a Liquid Film
Applied Mechanics, 2022 Applying a constant electric field on a suspended film of liquid that carries an electric current, either by the transport of ions or surface charges, induces a rotation in the film. This system is known as “liquid film motor”.
Reza Shirsavar +6 more
doaj +1 more source