Results 71 to 80 of about 1,771,776 (376)

On the Scalar Curvature and Sectional Curvatures of a Totally Real Submanifold [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
For a totally real minimal submanifold of a complex space form, pinching for scalar curvature implies pinching for sectional curvatures.
openaire   +2 more sources

Cytosolic‐enhanced dark Epac‐based FRET sensors allow for intracellular cAMP detection in live cells via FLIM

open access: yesFEBS 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

Mixed curvature almost flat manifolds [PDF]

open access: yesGeom. Topol. 25 (2021) 2017-2059, 2019
We prove a mixed curvature analogue of Gromov's almost flat manifolds theorem for upper sectional and lower Bakry-Emery Ricci curvature bounds.
arxiv   +1 more source

OPTIMAL PINCHING FOR THE HOLOMORPHIC SECTIONAL CURVATURE OF HITCHIN'S METRICS ON HIRZEBRUCH SURFACES [PDF]

open access: yes, 2015
The main result of this note is that, for each $n\in \{1,2,3,\ldots\}$, there exists a Hodge metric on the $n$-th Hirzebruch surface whose positive holomorphic sectional curvature is $\frac{1}{(1+2n)^2}$-pinched.
A. Alvarez   +2 more
semanticscholar   +1 more source

Sectional curvatures distribution of complexity geometry

open access: yesJournal of High Energy Physics, 2022
Abstract In the geometric approach to defining complexity, operator complexity is defined as the distance in the operator space. In this paper, based on the analogy with the circuit complexity, the operator size is adopted as the metric of the operator space where the path length is the complexity.
openaire   +3 more sources

Functional variation among LPMOs revealed by the inhibitory effects of cyanide and buffer ions

open access: yesFEBS Letters, EarlyView.
This study addresses the inhibition of lytic polysaccharide monooxygenases (LPMOs) by cyanide and explains how and why the magnitude of observed inhibitory effects depends on the way LPMO reactions are setup and on the type of LPMO. Enzymes known as lytic polysaccharide monooxygenases (LPMOs) are mono‐copper polysaccharide‐degrading peroxygenases that ...
Ole Golten   +10 more
wiley   +1 more source

Curvatures in contravariant warped product space [PDF]

open access: yesarXiv, 2022
In this article, we introduce the sectional curvature in contravariant warped product space $(M= M_{1}\times_{f_{1}}M_{2},\Pi,g^{f_{1}})$, where $\Pi=\Pi_1+\nu_{1}\Pi_2$). After that we find the sectional curvature of $M$ for which $M_{1}$ and $M_{2}$ are Poisson manifolds of positive sectional curvatures.
arxiv  

Continuity of the isoperimetric profile of a complete Riemannian manifold under sectional curvature conditions [PDF]

open access: yes, 2015
Let M be a complete Riemannian manifold possessing a strictly convex Lipschitz continuous exhaustion function. We show that the isoperimetric profile of M is a continuous and non-decreasing function.
Manuel Ritor'e
semanticscholar   +1 more source

Making tau amyloid models in vitro: a crucial and underestimated challenge

open access: yesFEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

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