Results 91 to 100 of about 71,844 (227)

The Impact of Quasi-Conformal Curvature Tensor on Warped Product Manifolds

Axioms
This work investigates the effects on the factor manifolds of a singly warped product manifold resulting from the presence of a quasi-conformally flat, quasi-conformally symmetric, or divergence-free quasi-conformal curvature tensor.
Bang-Yen Chen, Sameh Shenawy, Uday Chand De, Alaa Rabie, Nasser Bin Turki   +4 more
doaj   +1 more source

Dielectrophoresis Tutorial: Inspired by Hatfield's 1924 Patent and Boltzmann's Theory and Experiments of 1874

ELECTROPHORESIS, EarlyView.
ABSTRACT The first patent to describe dielectrophoresis (DEP) as a means and process to separate particles from a mixture was granted by the US Patent Office to Henry Stafford Hatfield in 1924. The novel methods of sample preparation and designs of electrode geometry covered by the patent's disclosures and claims describe the basis for most present‐day
Ronald Pethig
wiley   +1 more source

Construction of an A-manifold on a principal torus bundle

, 2012
We construct a new example of an A-manifold, i.e. a Riemannian manifold with a cyclic-parallel Ricci tensor, which can be viewed as a generalization of the Einstein condition.
Zborowski, Grzegorz
core   +1 more source

On the topology of conformally compact Einstein 4-manifolds

, 2003
In this paper we study the topology of conformally compact Einstein 4-manifolds. When the conformal infinity has positive Yamabe invariant and the renormalized volume is also positive we show that the conformally compact Einstein 4-manifold will have at ...
Chang, Alice, Qing, Jie, Yang, Paul
core  

Multiobjective Numerical Analysis of Thermal and Fluid Dynamics Performance of a Vertical Helical Earth–Air Heat Exchanger Using the TOPSIS Method

Heat Transfer, EarlyView.
ABSTRACT The present work numerically investigates an Earth–Air Heat Exchanger (EAHE) of the vertical helical (VH) type, with regard to the prevailing climate and soil attributes of Rio Grande city, in southern Brazil, through the variation of its pitch between the helicoids (Ph), with constant air flow and soil conditions.
Andre Luis Razera, Igor Silva Vaz, Roberta Juliana Collet da Fonseca, Michel Kepes Rodrigues, Luiz Alberto Oliveira Rocha, Elizaldo Domingues dos Santos, Liércio André Isoldi   +6 more
wiley   +1 more source

Surgery in Ovarian Cancer—Brazilian Society of Surgical Oncology Consensus

Journal of Surgical Oncology, EarlyView.
ABSTRACT Surgical management in epithelial ovarian cancer (EOC) has a significant impact on overall survival (OS) and progression‐free survival (PFS). The Brazilian Society of Surgical Oncology (BSSO) supported an expert‐led task force for consensus: the best EOC surgery is provided by experienced and specialized trained surgeons in cancer centers ...
Audrey Tieko Tsunoda, Ricardo dos Reis, Renato Moretti‐Marques, Glauco Baiocchi, Leonardo Martins Campbell, Angelica Nogueira Rodrigues, Fabio Fin, Carlos Eduardo Mattos da Cunha Andrade, Bruno Roberto Braga Azevedo, Rosilene Jara Reis, Thales Paulo Batista, Reitan Ribeiro, Deraldo Falcao, Gustavo Guitmann, Suzana Arenhart Pessini, Paulo Henrique Zanvettor, João Soares Nunes, José Clemente Linhares, José Augusto Belotti, Alexandre Oliveira, Rodrigo Nascimento Pinheiro   +20 more
wiley   +1 more source

7D supersymmetric Yang-Mills on curved manifolds

Journal of High Energy Physics, 2017
We study 7D maximally supersymmetric Yang-Mills theory on curved manifolds that admit Killing spinors. If the manifold admits at least two Killing spinors (Sasaki-Einstein manifolds) we are able to rewrite the supersymmetric theory in terms of a ...
Konstantina Polydorou, Andreas Rocén, Maxim Zabzine   +2 more
doaj   +1 more source

How marine heatwaves are reshaping phytoplankton in the Northeast Pacific

Limnology and Oceanography, EarlyView.
Abstract In 2015 and 2019, the Northeast Pacific has undergone significant heatwave events that strongly disrupted marine ecosystems functioning and services. Here we use the data collected by the Continuous Plankton Recorder (CPR) survey to investigate the changes in summer phytoplankton abundance and morphology and show an increase in prolate (i.e ...
Loïck Kléparski, Clare Ostle, Sonia D. Batten, Nicolas Djeghri, Claudine Hauri, Rémi Pagès, Suzanne Strom   +6 more
wiley   +1 more source

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

Axioms
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, Mohabbat Ali, Meraj Ali Khan, Ibrahim Aldayel   +3 more
doaj   +1 more source

Einstein metrics on a product manifold

Proceedings of the Japan Academy, Series A, Mathematical Sciences, 1994
The study of the integral of the scalar curvature \(I(g)\) as a function on the set of all Riemannian metrics \(g\) of the same total volume on a compact manifold is well known and the critical points are the Einstein manifolds, [see \textit{Y. Muto}, J. Differ. Geom. 9, 521-530 (1974; Zbl 0288.53037) or \textit{A. L.
openaire   +2 more sources