Results 91 to 100 of about 4,268 (287)

Tuning the Growth Pattern of Triangular Silver Nanoplates from Lateral to Vertical by Secondary Metal Addition

open access: yesChemPhysChem, Volume 26, Issue 6, March 15, 2025.
What happens, if in the synthesis of flat silver platelets, the slow deposition of silver along twinning faults is disturbed by the addition of a nobler metal? We have looked into it and found a way to fine‐tune the metal deposition in lateral and vertical direction.
Jonas Kluitmann   +3 more
wiley   +1 more source

THE SPECTRAL GEOMETRY OF EINSTEIN MANIFOLDS WITH BOUNDARY [PDF]

open access: yesJournal of the Korean Mathematical Society, 2004
Let (M,g) be a compact Einstein manifold with smooth boundary. We consider the spectrum of the p form valued Laplacian with respect to a suitable boundary condition. We show that certain geometric properties of the boundary may be spectrally characterized in terms of this data where we fix the Einstein constant.
openaire   +2 more sources

High atmospheric pressure rescues plant growth under humidity stress: A model for climate‐resilient deep underground agriculture

open access: yesDeep Underground Science and Engineering, EarlyView.
High atmospheric pressure (120 kPa) in deep underground counteracts humidity‐induced physiological stress in plants, stabilizing water balance and enhancing antioxidative defenses. This synergy boosts biomass despite elevated humidity, demonstrating sustainable deep underground agriculture potential under climate uncertainty.
Yuxin He   +6 more
wiley   +1 more source

Bundle Construction of Einstein Manifolds [PDF]

open access: yes, 2010
The aim of this thesis is to construct some smooth Einstein manifolds with nonzero Einstein constant, and then to investigate their topological and geometric properties.
Chen, Dezhong
core  

On quasi-Einstein Weyl manifolds

open access: yes, 2017
In this work, first, we define quasi-Einstein Weyl manifold which is one of the generalization of Einstein–Weyl manifold. Then, we prove its existence and construct an example.
İlhan Gül, Elif Özkara Canfes
core   +1 more source

Einstein-Hermitian connections on polystable principal bundles over a compact Kahler manifold

open access: yes, 2001
Given a compact Kahler manifold M and a connected reductive algebraic group G over C, a principal G-bundle over M admits an Einstein-Hermitian connection if and only if the principal bundle is polystable.
Anchouche, Boudjemaa, Biswas, Indranil
core   +1 more source

Super Quasi-Einstein Warped Products Manifolds with Respect to Affine Connections

open access: yesAxioms
In this paper, we investigate warped products on super quasi-Einstein manifolds under affine connections. We explore their fundamental properties, establish conditions for their existence, and prove that these manifolds can also be nearly quasi-Einstein ...
Mohd Vasiulla   +3 more
doaj   +1 more source

On Calabi's Inhomogeneous Einstein-Kaehler Manifolds [PDF]

open access: yesProceedings of the American Mathematical Society, 1977
We use some information on Lie groups to replace a long computation of Calabi, proving that certain complete Einstein-Kaehler manifolds are not locally homogeneous, and finding their isometry groups.
openaire   +2 more sources

The regulation of stem cell fate and its application in neural regeneration

open access: yesInterdisciplinary Medicine, EarlyView.
Regulating stem cell fate is crucial for neural regeneration. This review summarizes key physical, biological, and chemical strategies and their applications in repairing nerve injuries, providing new insights for regenerative medicine. Abstract Regulating the fate of stem cells (SCs) is a key technical problem in the field of regenerative medicine and
Yuexin He   +3 more
wiley   +1 more source

Sphere Theorems for σk-Einstein Manifolds

open access: yesAxioms
A problem that geometers have always been concerned with is when a closed manifold is isometric to a round sphere. A classical result shows that a closed locally conformally flat Einstein manifold is always isometric to a quotient of a round sphere.
Jingyang Zhong, Xinran Mu
doaj   +1 more source

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