Results 21 to 30 of about 544,812 (281)

Curvature-Mediated Forces on Elastic Inclusions in Fluid Interfaces

open access: yes, 2022
Heterogeneous fluid interfaces often include two-dimensional solid domains that mechanically respond to changes in interfacial curvature. While this response is well-characterized for rigid inclusions, the influence of solid-like elasticity remains ...
Todd M. Squires   +3 more
core   +1 more source

Distinct cytoskeletal proteins define zones of enhanced cell wall synthesis in Helicobacter pylori

open access: yeseLife, 2020
Helical cell shape is necessary for efficient stomach colonization by Helicobacter pylori, but the molecular mechanisms for generating helical shape remain unclear. The helical centerline pitch and radius of wild-type H.
Jennifer A Taylor   +13 more
doaj   +1 more source

On Type I singularities in Ricci flow [PDF]

open access: yes, 2011
07.02.13 KB. Accepted version ok to add to Spiral. IP/Sherpa.We define several notions of singular set for Type I Ricci flows and show that they all coincide.
Topping, P, Enders, J, Müller, R
core   +6 more sources

Examples of surfaces of constant mean curvature

open access: yesДифференциальная геометрия многообразий фигур, 2019
A surface in E3 is called parallel to the surface M if it consists of the ends of constant length segments, laid on the normals to the surfaces at points of this surface. The tangent planes at the corresponding points will be parallel.
M. A. Cheshkova
doaj   +1 more source

Computing Gaussian Curvature in Real-Time for 4K Video Processing

open access: yesIEEE Access, 2019
Computing Gaussian curvature is a fundamental task in image and video processing. However, this task becomes more and more time consuming when the image resolution goes higher and higher. In this paper, we tackle this issue from two aspects.
Yuanhao Gong, Yong Chen
doaj   +1 more source

Type I+ Helicoidal Surfaces with Prescribed Weighted Mean or Gaussian Curvature in Minkowski Space with Density

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2018
In this paper, we construct a helicoidal surface of type I+ with prescribed weighted mean curvature and Gaussian curvature in the Minkowski 3−space ℝ13${\Bbb R}_1^3$with a positive density function. We get a result for minimal case.
Yıldız Önder Gökmen   +2 more
doaj   +1 more source

Lifting wavelet algorithm for freeform surface filtering using a Gaussian prediction operator [PDF]

open access: yes, 2013
The aim of the paper is to investigate a novel lifting wavelet algorithm based on a Gaussian prediction operator to filter freeform surfaces represented by 3D triangular meshes.
Abdul-Rahman, Hussein S.   +2 more
core   +1 more source

Some Characterizations of Generalized Null Scrolls

open access: yesMathematics, 2019
In this work, a family of ruled surfaces named generalized null scrolls in Minkowski 3-space are investigated via the defined structure functions. The relations between the base curve and the ruling flow of the generalized null scroll are revealed.
Jinhua Qian   +2 more
doaj   +1 more source

Light in curved two-dimensional space

open access: yesAdvances in Physics: X, 2020
The extrinsic and intrinsic curvature of a two-dimensional waveguide influences wave propagation therein. While this can already be apprehended from a geometric point of view in terms of geodesics generalizing straight lines as the shortest distance ...
Vincent H. Schultheiss   +2 more
doaj   +1 more source

The Weighted Mean Curvature Derivative of a Space-Filling Diagram

open access: yesComputational and Mathematical Biophysics, 2020
Representing an atom by a solid sphere in 3-dimensional Euclidean space, we get the space-filling diagram of a molecule by taking the union. Molecular dynamics simulates its motion subject to bonds and other forces, including the solvation free energy ...
Akopyan Arsenyi, Edelsbrunner Herbert
doaj   +1 more source

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