Results 21 to 30 of about 1,092,358 (155)

Development of a highly active engineered PETase enzyme for polyester degradation. [PDF]

open access: yesFEBS J
Polyethylene terephthalate (PET) accounts for approximately 6% of global plastic production and is a major contributor to plastic pollution. Enzymatic recycling offers a promising solution, but current PET‐degrading enzymes often lack sufficient thermostability and catalytic efficiency. Through in silico design, we engineered a more robust variant, LCC‐
Bhattacharya S   +6 more
europepmc   +2 more sources

3+1 decomposition in modified gravities within the Palatini formalism and some applications [PDF]

open access: yesPhysical Review D, 2021
In the present paper, the 3+1 decomposition of the spacetime onto hypersurface(s) is analysed and established for theories within the Palatini formalism by considering a general function of the Ricci scalar in the gravitational action.
Diego Sáez-Chillón Gómez
semanticscholar   +1 more source

Combinatorial Ricci flows and the hyperbolization of a class of compact 3–manifolds [PDF]

open access: yesGeometry & Topology, 2020
We prove that for a compact 3-manifold M with boundary admitting an ideal triangulation T with valence at least 10 at all edges, there exists a unique complete hyperbolic metric with totally geodesic boundary, so that T is isotopic to a geometric ...
Ke Feng, Huabin Ge, B. Hua
semanticscholar   +1 more source

Community Detection on Networks with Ricci Flow [PDF]

open access: yesScientific Reports, 2019
Many complex networks in the real world have community structures – groups of well-connected nodes with important functional roles. It has been well recognized that the identification of communities bears numerous practical applications.
Chien-Chun Ni   +3 more
semanticscholar   +1 more source

On Sasaki-Ricci solitons and their deformations [PDF]

open access: yes, 2016
We extend to the Sasakian setting a result of Tian and Zhu about the decomposition of the Lie algebra of holomorphic vector fields on a Kähler manifold in the presence of a Kähler-Ricci soliton.
Petrecca, David
core   +3 more sources

Covariant Derivatives on Null Submanifolds [PDF]

open access: yes, 2011
The degenerate nature of the metric on null hypersurfaces makes it difficult to define a covariant derivative on null submanifolds. Recent approaches using decomposition to define a covariant derivative on null hypersurfaces are investigated, with ...
Dray, Tevian, Hickethier, Don
core   +1 more source

Failing to attend versus failing to stop: Single-trial decomposition of action-stopping in the stop signal task

open access: yesBehavior Research Methods, 2022
The capacity to stop impending or ongoing actions contributes to executive control over behavior. Action-stopping, however, is difficult to directly quantify.
R. Hannah, Vignesh Muralidharan, A. Aron
semanticscholar   +1 more source

Topology of 3-dimensional manifolds [PDF]

open access: yesریاضی و جامعه
This is the second paper from a trio which reviews some of the progress in low dimensional topology in the past century. Starting with the work of Poincare in the last years of 19th century and first few years of 20th century, we review the major steps ...
Eaman Eftekhary
doaj   +1 more source

NGC 1275: An Outlier of the Black Hole-Host Scaling Relations

open access: yesFrontiers in Astronomy and Space Sciences, 2018
The active galaxy NGC 1275 lies at the center of the Perseus cluster of galaxies, being an archetypal BH-galaxy system that is supposed to fit well with the MBH-host scaling relations obtained for quiescent galaxies.
Eleonora Sani   +13 more
doaj   +1 more source

Perfect-fluid, generalized Robertson-Walker space-times, and Gray’s decomposition [PDF]

open access: yesJournal of Mathematics and Physics, 2019
We give new necessary and sufficient conditions on the Weyl tensor for generalized Robertson-Walker (GRW) space-times to be perfect-fluid space-times.
C. Mantica   +3 more
semanticscholar   +1 more source

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