Results 11 to 20 of about 51,602 (210)

SiC free‐standing membrane for X‐ray intensity monitoring in synchrotron radiation beamlines [PDF]

open access: yesJournal of Synchrotron Radiation, Volume 32, Issue 1, Page 118-124, January 2025.
Characterization of an SiC free‐standing membrane to be used as an X‐ray beam intensity monitor.For many synchrotron radiation experiments, it is critical to perform continuous, real‐time monitoring of the X‐ray flux for normalization and stabilization purposes.
Gabriele Trovato   +12 more
wiley   +2 more sources

Mixing of Two Microbial Consortia in the Search for Stimulating Chromium Depletion [PDF]

open access: yesInternational Journal of Microbiology, Volume 2025, Issue 1, 2025.
Two bacterial consortia (C55 and C33), obtained from an industrial residue contaminated with hexavalent chromium (Cr(VI)), were used to study the behavior of their mixture for depleting this ion in liquid media. In the absence of Cr(VI), C55 showed a greater growth rate than C33, while the latter exhibited biofilm formation. In the presence of this ion,
Elcia Margareth Souza Brito   +12 more
wiley   +2 more sources

Scaling laws of quiet-Sun coronal loops [PDF]

open access: yes, 2019
We study a series of relations between physical parameters in coronal loops of the quiet Sun reconstructed by combining tomographic techniques and modeling of the coronal magnetic field. We use differential emission measure tomography (DEMT) to determine
Lloveras, Diego Gustavo   +5 more
core   +1 more source

Infraestructura de datos espaciales como apoyo a la toma de decisiones en Gobiernos autónomos descentralizados en la provincia de Esmeraldas

open access: yesRevista Odigos, 2022
La Infraestructura de Datos Espaciales (IDE) puede definirse como la integración de políticas, normas, leyes, reglamentos, recursos humanos y tecnológicos, los cuales son gestionados por medio de un sistema informático de recursos (catálogos, servidores,
Fabián Lizardo Caicedo Goyes
doaj   +1 more source

Meton of Athens: An Astronomer in the Democratic Landscape of the Polis

open access: yesGerión, 2022
La democracia ateniense del siglo V asistió a una expansión del conocimiento. Una parte estaba estrechamente asociado con las instituciones, con localizaciones que estaban bien definidas en la topografía urbana, sin embargo, el conocimiento nuevo es más
Marco V. García Quintela
doaj   +1 more source

Shadow cast by rotating braneworld black holes with a cosmological constant [PDF]

open access: yes, 2018
In this article, we study the shadow produced by rotating black holes with a tidal charge in a Randall-Sundrum braneworld model, with a  cosmological constant.
Eiroa, Ernesto Fabian   +1 more
core   +2 more sources

Thin shells surrounding black holes in F(R) gravity [PDF]

open access: yes, 2019
In this article, we consider spherical thin shells of matter surrounding black holes in F(R) theories of gravity. We study the stability of the static configurations under perturbations that conserve the symmetry.
Eiroa, Ernesto Fabian   +1 more
core   +2 more sources

Evolving supernova remnants in multiphase interstellar media [PDF]

open access: yes, 2019
We performed three-dimensional magnetohydrodynamic simulations to study the evolution of a supernova remnant (SNR) in a turbulent neutral atomic interstellar medium. The media used as background shares characteristics with the Solar neighbourhood and the
Giacani, Elsa Beatriz   +3 more
core   +2 more sources

Ross 128-GL 447: A possible activity cycle for a slow-rotating fully convective star [PDF]

open access: yes, 2019
Context. Long-term chromospheric activity in slow-rotating fully convective stars has scarcely been explored. Ross 128 (Gl 447) is a slow-rotator and inactive dM4 star that has been extensively observed.
Buccino, Andrea Paola   +3 more
core   +1 more source

Comparing galaxy populations in compact and loose groups of galaxies III. Effects of environment on star formation [PDF]

open access: yes, 2015
Aims. This paper is part of a series in which we systematically compare the properties of galaxies in compact groups, loose groups, and the field. In this paper we focus our study on the age and star formation in galaxies. Methods.
Coenda, Valeria   +2 more
core   +1 more source

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