Results 41 to 50 of about 133 (98)

Biharmonic maps between doubly warped product manifolds

open access: yes, 2008
In this paper biharmonic maps between doubly warped product manifolds are studied. We show that the inclusion maps of Riemannian manifolds $B$ and $F$ into the doubly warped product $_{f}B\times_{b}F$ can not be proper biharmonic maps. Also we analyze the conditions for the biharmonicity of projections $_{f}B\times_{b}F\to B$ and $_{f}B\times_{b}F\to F$
Perktaş, Selcen Yüksel, Kılıç, Erol
openaire   +2 more sources

On Surfaces Properties of Doubly Warped product Manifolds hfB in generalized Robertson-Walker spacetimes

open access: yesJournal of Physics: Conference Series, 2021
Abstract This paper concerns the properties of submanifolds of doubly warped product space. For Riemannian manifold B and interval I, we investigate some surfaces properties of doubly warped product manifolds hI×fB, and obtain the scalar curvature for the doubly warped product space.
LingWei Du, Jian Wang
openaire   +1 more source

General formulation for uniform and non‐uniform high‐strength steel slender I‐section beams

open access: yesSteel Construction, Volume 19, Issue 2, Page 171-178, May 2026.
Abstract The Ayrton–Perry approach is the basis of Eurocode 3 rules for buckling resistance, with distinct curves and imperfection factors depending on section type, steel grade, and other parameters. For generic members – built‐up or not, uniform or not, with complex supports or not – the code allows either the general method (clause 8.3.4 of Eurocode
José Osvaldo Ferreira Filho   +3 more
wiley   +1 more source

Death anxiety predicts fear of progression in people with rheumatic conditions

open access: yesBritish Journal of Health Psychology, Volume 31, Issue 2, May 2026.
Abstract Background Rheumatic diseases often have a progressive course and place individuals at increased risk of mortality. Despite this, little research has investigated the relationship between death anxiety and fears about disease progression (FoP), and how these might relate to health‐related quality of life (HRQoL) outcomes.
Bethany Richmond   +4 more
wiley   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Curvature blow-up in doubly-warped product metrics evolving by Ricci flow

open access: yes, 2019
For any manifold N[superscript p] admitting an Einstein metric with positive Einstein constant, we study the behavior of the Ricci flow on high-dimensional products M = N[superscript p] X S[superscript q+1] with doubly-warped product metrics.
Stolarski, Maxwell Edward
core   +1 more source

Conversion of Transplanted Mature Hepatocytes into Afp+ Reprogrammed Cells for Liver Regeneration After Injury

open access: yesAdvanced Science, Volume 13, Issue 18, 27 March 2026.
Donor‐derived tdTomato+ mature hepatocytes were FACS‐isolated and transplanted into Fah−/− host mice. During regeneration, these cells convert into proliferative, unipotent Afp+ rHeps. Their plasticity is governed by a PPARγ/AFP‐dependent metabolic switch, segregating into pro‐proliferative Afplow and pro‐survival Afphigh subpopulations.
Ting Fang   +12 more
wiley   +1 more source

Pointwise pseudo-slant submanifolds of a Kenmotsu manifold

open access: yes, 2017
In the present article, we have investigated pointwise pseudo-slant submanifolds of Kenmotsu manifolds and have sought conditions under which these submanifolds are warped products.
Viqar Khan, Mohammad Shuaib
core   +1 more source

Comprehensive Review on Concentrated Solar Photovoltaics: Manufacturing, Cooling Technologies, and Advanced Applications

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.
This review examines the evolution and current state of concentrated photovoltaic systems, focusing on materials, manufacturing pathways, and thermal management challenges. Advanced cooling techniques and emerging applications are assessed alongside recent digital integration strategies. Through linking performance gains with practical limitations, the
Abdul Ghani Olabi   +7 more
wiley   +1 more source

Optimized State‐of‐Health Estimation for Electric Vehicle Battery Under Operating Condition using Impedance and Resistance: A Robust Fusion Model

open access: yesEnergy Technology, Volume 14, Issue 3, March 2026.
This study proposes an state‐of‐health estimation algorithm that integrates electrical and electrochemical information through alternating current signal conversion and a probability density‐based fusion model. Results demonstrate that the fusion model achieves significantly higher accuracy across varying conditions, particularly under both room‐ and ...
Minhyeok Kim   +3 more
wiley   +1 more source

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