Results 51 to 60 of about 1,083,966 (327)
Membrane curvature at a glance
Journal of Cell Science, 2015 Membrane curvature is an important parameter in defining the morphology of cells, organelles and local membrane subdomains. Transport intermediates have simpler shapes, being either spheres or tubules.
H. McMahon, Emmanuel Boucrot
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Ricci curvature for metric-measure spaces via optimal transport [PDF]
, 2004 We dene a notion of a measured length space X having nonnegative N-Ricci curvature, for N 2 [1;1), or having1-Ricci curvature bounded below byK, forK2 R.
J. Lott, C. Villani
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On the curvature of biquotients [PDF]
Mathematische Annalen, 2011 As a means to better understanding manifolds with positive curvature, there has been much recent interest in the study of non-negatively curved manifolds which contain either a point or an open dense set of points at which all 2-planes have positive curvature.
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Nonnegative curvature and conullity of the curvature tensor [PDF]
Annals of Global Analysis and Geometry, 2019 The conullity of a curvature tensor is the codimension of its kernel. We consider the cases of conullity two in any dimension and conullity three in dimension four. We show that these conditions are compatible with non-negative sectional curvature only if either the manifold is diffeomorphic to $\mathbb{R}^n$ or the universal cover is an isometric ...
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Curvature estimates for constant mean curvature surfaces [PDF]
Duke Mathematical Journal, 2019 We have separated the original paper into two parts. This new posting is the first part which is self-contained and deals with extrinsic curvature estimates for embedded nonzero constant mean curvature disks.
H. Meeks III, William +1 more
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Membrane curvature underlies actin reorganization in response to nanoscale surface topography
Proceedings of the National Academy of Sciences of the United States of America, 2019 Significance Despite a large body of work, little is known about the origin or underlying mechanisms of how cells interact with surface topographic patterns, which has resulted in a primarily phenomenological approach in studying cell–nanotopography ...
Hsin-Ya Lou +10 more
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Kropina metrics with isotropic scalar curvature [PDF]
arXiv, 2023 In this paper, we study Kropina metrics with isotropic scalar curvature. First, we obtain the expressions of Ricci curvature tensor and scalar curvature. Then, we characterize the Kropina metrics with isotropic scalar curvature on by tensor analysis.
arxiv
Implicit fairing of irregular meshes using diffusion and curvature flow
International Conference on Computer Graphics and Interactive Techniques, 1999 In this paper, we develop methods to rapidly remove rough features from irregularly triangulated data intended to portray a smooth surface. The main task is to remove undesirable noise and uneven edges while retaining desirable geometric features.
M. Desbrun +3 more
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FEBS Letters, EarlyView.We describe a novel set of Epac‐based FRET‐FLIM biosensors with improved fully cytosolic distribution, achieved without compromising the state‐of‐the‐art performance of our original designs, for detecting cAMP dynamics in real time in live cells with high precision and reliability.
Giulia Zanetti +2 more
wiley +1 more source
Classification of 3D Archaeological Objects Using Multi-View Curvature Structure Signatures
IEEE Access, 2019 We propose a generalized 3D shape descriptor for the efficient classification of 3D archaeological artifacts. Our descriptor is based on a multi-view approach of curvature features, consisting of the following steps: pose normalization of 3D models ...
Mario Canul-Ku +4 more
doaj +1 more source