Results 21 to 30 of about 40,612 (311)

Classification of exact Bianchi type V cosmological solutions via conformal vector fields admitting energy conditions in f(T) gravity

open access: yesResults in Physics, 2023
The aim of this paper is to discuss exact Bianchi-type V cosmological solutions via conformal vector fields (CVFs) admitting energy conditions within the framework of f(T) gravity.
Sabiha Qazi   +6 more
doaj   +1 more source

Nonlinear Spinor Field in Non-Diagonal Bianchi Type Space-Time

open access: yesEPJ Web of Conferences, 2018
Within the scope of the non-diagonal Bianchi cosmological models we have studied the role of the spinor field in the evolution of the Universe. In the non-diagonal Bianchi models the spinor field distribution along the main axis is anisotropic and does ...
Saha Bijan
doaj   +1 more source

Wildlife Hosts of Leishmania infantum in a Re-Emerging Focus of Human Leishmaniasis, in Emilia-Romagna, Northeast Italy

open access: yesPathogens, 2022
In the last decade, an upsurge of human leishmaniasis has been reported in the Emilia-Romagna region, Northeast Italy. Epidemiologic data have raised doubts about the role of dogs as the main reservoirs for Leishmania infantum.
Roberta Taddei   +14 more
doaj   +1 more source

Formalismo Hamiltoniano de los modelos de Bianchi con constante cosmológica

open access: yesRevista de Investigación de Física
La Radiación Cósmica de Fondo (CMB) ha dado como resultado anomalías o desviaciones con respecto al modelo estándar de la cosmología. En consecuencia, proponemos estudiar los espacio-tiempo de Bianchi con constante cosmológica aplicando el formalismo de
Mississippi Valenzuela
doaj   +1 more source

A classification of Bianchi Type I solutions via conformal vector fields and energy conditions in modified teleparallel gravity

open access: yesResults in Physics, 2023
The focus of this research is to investigate conformal vector fields (CVFs) of Bianchi type I space–times in modified teleparallel gravity (MTG). In order to determine such vector fields, we make a classification of said space–times.
Shabeela Malik   +5 more
doaj   +1 more source

The role of spatial curvature in constraining the Universe anisotropies across a Big Bounce

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We study the implementation of Polymer Quantum Mechanics (PQM) to a system decomposed into a quasi-classical background and a small quantum subsystem, according to the original Vilenkin proposal.
Eleonora Giovannetti, Giovanni Montani
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced 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   +7 more
wiley   +1 more source

Radical‐Mediated, Substrate‐Independent Fabrication of Hybrid Solid–Hydrogel Materials With Tunable Crosslinking: An Initiator‐ and Crosslinker‐Free Approach

open access: yesAdvanced Science, EarlyView.
This work introduces a substrate‐independent, reagent‐free plasma strategy that forms radical‐rich interlayers for covalent hydrogel attachment without initiators or crosslinkers. The long‐lived radicals drive in situ gelation, creating robust, cytocompatible hybrid solid–hydrogel constructs across diverse substrates.
Ghazal Shineh   +14 more
wiley   +1 more source

Bianchi transformation of the Minding coil

open access: yesДифференциальная геометрия многообразий фигур
The work is devoted to the study of the Bianchi transform for surfac­es of constant negative Gaussian curvature. The surfaces of rotation of constant negative Gaussian curvature are the Mining top, the Minding coil, the pseudosphere (Beltrami surface ...
M. A. Cheshkova
doaj   +1 more source

Superannuation Reimagined: Moving Beyond the Origins to an Indigenous Focus

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT Retirement income systems, such as superannuation, are meant to be non‐discriminatory and consider disadvantage faced by members of society. There are significant differences between the life expectancies of Indigenous and non‐Indigenous peoples. The gap in life expectancies is not considered when determining when Indigenous peoples can retire.
Levon Ellen Blue   +2 more
wiley   +1 more source

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