Results 51 to 60 of about 14,568 (187)

Special Standard Static Space-Times [PDF]

, 2004
Essentially, some conditions for the Riemannian factor and the warping function of a standard static space-time are obtained in order to guarantee that no nontrivial warping function on the Riemannian factor can make the standard static space-time ...
Dobarro, Fernando, Unal, Bulent
core   +1 more source

DUALISTIC STRUCTURES ON DOUBLY WARPED PRODUCT MANIFOLDS

, 2013
Abdoul Salam Diallo
openalex   +2 more sources

Minimal tensors and purely electric or magnetic spacetimes of arbitrary dimension [PDF]

, 2012
We consider time reversal transformations to obtain twofold orthogonal splittings of any tensor on a Lorentzian space of arbitrary dimension n. Applied to the Weyl tensor of a spacetime, this leads to a definition of its electric and magnetic parts ...
Arianrhod R, Arianrhod R, Ashtekar A, Barnes A Miralles J Font J Pons J, Bel L, Bergqvist G, Bonnor W B, Carot J, Coley A, Coley A, Coley A, Coley A, Coley A, Durkee M, Durkee M, Durkee M, Ehlers J, Ellis G F R, Godazgar M, Hall G, Hervik S, Hervik S, Hervik S, Hervik S, Lode Wylleman, Lozanovski C, Lozanovski C, Lozanovski C, Macdonald I G, Mann R B, Marcello Ortaggio, McIntosh C B G, Milson R, Ortaggio M, Ortaggio M, Ortaggio M, Ortaggio M, Petrov A Z, Pravda V, Pravda V, Pravda V, Procesi C, Robinson I, Senovilla J M M, Senovilla J M M, Senovilla J M M, Senovilla J M M, Sigbjørn Hervik, Synge J L, Van den Bergh N, Wylleman L, Wylleman L, Wylleman L, Wylleman L, Yau S T   +54 more
core   +3 more sources

Doubly warped products

Differential Geometry and its Applications, 2001
The author studies the completeness of Lorentzian doubly warped products with metrics of the form \(-f^2 dt^2\oplus b^2g_F\) for positive functions \(f\) on a Riemannian manifold \(F\), \(b\) on an interval \((c,d)\).
openaire   +1 more source

A Note on Doubly Warped Product Contact CR-Submanifolds in trans-Sasakian Manifolds

, 2007
Warped product CR-submanifolds in Kaehlerian manifolds were intensively studied only since 2001 after the impulse given by B.Y. Chen. Immediately after, another line of research, similar to that concerning Sasakian geometry as the odd dimensional version
A. Gray, B. Y. Chen, B. Y. Chen, B. Ünal, D. E. Blair, I. Mihai, J. C. Marero, K. Arslan, K. Yano, M. -I. Munteanu, M. I. Munteanu   +10 more
core   +2 more sources

Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore

Advanced Functional Materials, EarlyView.
To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul, Archith Rayabharam, Lisa Almonte, Eveline Rigo, Joshy Joseph, Ashutosh Kumar, Zhuxin Dong, Narayana Aluru, Gregory Timp   +8 more
wiley   +1 more source

Warped Tori with Almost Non-Negative Scalar Curvature

, 2018
For sequences of warped product metrics on a $3$-torus satisfying the scalar curvature bound $R_j \geq -\frac{1}{j}$, uniform upper volume and diameter bounds, and a uniform lower area bound on the smallest minimal surface, we find a subsequence which ...
Allen, Brian, Hernandez-Vazquez, Lisandra, Parise, Davide, Payne, Alec, Wang, Shengwen   +4 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Bulk Higgs and Gauge fields in a multiply warped braneworld model

, 2011
We readdress the problems associated with bulk Higgs and the gauge fields in a 5-dimensional Randall-Sundrum model by extending the model to six dimensions with double warping along the two extra spatial dimensions.
Ashmita Das, M. Bauer, R. S. Hundi, Soumitra SenGupta, Y. Hosotani   +4 more
core   +1 more source

Light‐Controlled Exposure of Cancer Cells to Reactive Oxygen Species Using Organic Semiconductor Thin Films

Advanced Materials Interfaces, EarlyView.
Spin‐coated films of the conjugated polymer F8T2 (poly (9,9‐dioctylfluorene‐alt‐bithiophene)) generate superoxide at the film‐medium interface, enabling precise delivery of reactive oxygen species (ROS) as visible‐light “ROS patches.” Coated surfaces drive rapid, localised cytotoxicity in MCF7 cancer monolayers under white light, providing a reagent ...
Joe Kaye, Niculina Miron, Benjamin Fortes Mayer, Yukai Shi, Boyuan Chen, Lewis Krzeczkowski, Robert J. E. Westbrook, Saif A. Haque, Ali Salehi‐Reyhani   +8 more
wiley   +1 more source