Results 51 to 60 of about 1,179 (183)

Schizophrenia Genetics Modulates Clinical Depressive Features

open access: yesAmerican Journal of Medical Genetics Part B: Neuropsychiatric Genetics, Volume 201, Issue 3, Page 180-193, April 2026.
ABSTRACT Schizophrenia (SCZ) genetic liability, quantified by polygenic scores (PGS), may influence clinical phenotypes in major depressive disorder (MDD). We investigated the effect of the SCZ‐PGS derived from the latest SCZ genome‐wide association study (GWAS) on MDD symptom severity, comorbidities, and treatment outcomes.
Alessandro Serretti   +13 more
wiley   +1 more source

Ricci Solitons in (ε,δ)-Trans-Sasakian Manifolds

open access: yesInternational Journal of Analysis and Applications, 2017
We study Ricci solitons in (ε,δ)-trans-Sasakian manifolds. It is shown that a symmetric parallel second order covariant tensor in a (ε,δ)-trans-Sasakian manifold is a constant multiple of the metric tensor.
C.S. Bagewadi, Gurupadavva Ingalahalli
doaj   +2 more sources

STUDI BRANEWORLD DIMENSI LIMA

open access: yesSpektra: Jurnal Fisika dan Aplikasinya, 2017
Abstrak Studi yang berkaitan dengan braneworld dimensi lima dengan brane tunggal yang terletak di telah diakukan, model Randall-Sundrum dan modifikasi Randall-Sundrum. Aspek yang ditinjau adalah skalar Ricci, persamaan Einstein, tensor energi-momentum,
Dewi Wulandari
doaj   +1 more source

Ricci Tensor Of Diagonal Metric

open access: yes, 1996
Efficient formulae of Ricci tensor for an arbitrary diagonal metric are presented.
openaire   +2 more sources

Sasakian Manifold and *-Ricci Tensor

open access: yes, 2018
The purpose of this paper is to study *-Ricci tensor on Sasakian manifold. Here, -confomally flat and confomally flat *- -Einstein Sasakian manifold are studied. Next, we consider *-Ricci symmetric conditon on Sasakian manifold. Finally, we study a special type of metric called *-Ricci soliton on Sasakian manifold.
Venkatesha., H, Aruna Kumara
openaire   +2 more sources

Symplectic Yang–Mills theory, Ricci tensor, and connections [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2007
A Yang-Mills theory in a purely symplectic framework is developed. The corresponding Euler-Lagrange equations are derived and first integrals are given. We relate the results to the work of Bourgeois and Cahen on preferred symplectic connections.
Habermann, Katharina   +2 more
openaire   +3 more sources

Paradiplomacy and City Diplomacy From the Theoretical Perspectives of Tourism and International Relations: An Analysis of the City of São Paulo, Brazil

open access: yesLatin American Policy, Volume 17, Issue 1, March 2026.
ABSTRACT Tourism and International Relations, as interdisciplinary fields, encompass diverse knowledge, making them complex subjects. This article explores how official international relations bodies at subnational levels influence tourism using paradiplomacy and city diplomacy concepts.
Juliane Santos Lumertz   +3 more
wiley   +1 more source

Auditory Hair Cell Mechanotransduction Channels Dynamically Shape the Mechanical Properties of Their Membrane Environment

open access: yesAdvanced Science, Volume 13, Issue 7, 3 February 2026.
This work shows, for the first time, that the stereocilia membrane in cochlear hair cells is dynamically regulated by the mechanotransduction channel to impact the membrane mechanical properties. This work provides direct evidence that the opening and closing associated with the MET channel is regulating the membrane viscosity suggesting that the MET ...
Shefin S. George, Anthony J. Ricci
wiley   +1 more source

Closed time-like curves in f(R,A) modified gravity theory

open access: yesNuclear Physics B
In this manuscript, we investigate solutions that allow closed time-like curves (CTCs) in general relativity (GR) within the framework of a modified gravity theory. We consider here an alternative theory recently proposed in gravity theories known as f(R,
F. Ahmed, J.C.R. de Souza, A.F. Santos
doaj   +1 more source

The Ricci tensor of a gradient Ricci soliton with harmonic Weyl tensor

open access: yes
In this article, we give a new proof of a result due to J. Kim, which states that the Ricci tensor of a gradient Ricci soliton with dimension $n \geq 4$ and harmonic Weyl tensor has at most three distinct eigenvalues. This result constitutes an essential step in the classification of such manifolds, originally established by J. Kim in dimension $4$ and
Borges, Valter   +2 more
openaire   +2 more sources

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