Zobrazeno 1 - 10
of 15 399
pro vyhledávání: '"A. Villarroel"'
It is shown that in the spacetime dominated by a cosmological constant, in the far region of a Schwarzschild-de Sitter black hole, a seed magnetic field can be generated in an ambient plasma (in a state of no magnetic field) by a general-relativistic
Externí odkaz:
http://arxiv.org/abs/2412.07516
Context. Magnetic batteries are potential sources that may drive the generation of a seed magnetic field, even if this field is initially zero. These batteries can be the result of non-aligned thermodynamic gradients in a plasma, as well as of specia
Externí odkaz:
http://arxiv.org/abs/2411.13222
Autor:
Villarroel, Beatriz, Krisciunas, Kevin
Unidentified Anomalous Phenomena (UAP) have historically been stigmatized and regarded as pseudoscience due to a general lack of robust evidence. Recently, however, the subject has gained interest among astronomers and the military. This review explo
Externí odkaz:
http://arxiv.org/abs/2411.02401
Publikováno v:
Journal of Mechanical Engineering and Sciences, Vol 14, Iss 2, Pp 6917-6933 (2020)
The induction motors (IMs) are undoubtedly the most used machines in industries because of the advantages they offer such as simplicity, service continuity and low cost. Due to wear and tear, the motor suffers different types of mechanical and electr
Externí odkaz:
https://doaj.org/article/8a3e04616ae04a14b03c5c43ae165f49
Publikováno v:
A&A 689, A261 (2024)
Context. The transition from left-hand to right-hand polarized Alfv\'en waves depends on the wavenumber, the ratio of kinetic to magnetic pressure $\beta$, temperature anisotropy, and ion composition of the plasma. Along with the temperature anisotro
Externí odkaz:
http://arxiv.org/abs/2407.04044
Autor:
D. Villarroel-Rocha, C. García-Carvajal, S. Amaya-Roncancio, J. Villarroel-Rocha, D. A. Torres-Ceron, E. Restrepo-Parra, K. Sapag
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-19 (2024)
Abstract In this work, we present the preparation of a hybrid material constituted by a Metal-Organic Framework (type MIL-101(Fe)) and a natural clay ceramic monolith (NCCM), the materials were successfully assembled through an in-situ hydrothermal m
Externí odkaz:
https://doaj.org/article/154812d2b5af445c99070243ee3e3628
Autor:
Cascio Rizzo, Giovanni Luca (AUTHOR) glcasciorizzo@luiss.it, Villarroel Ordenes, Francisco (AUTHOR), Pozharliev, Rumen (AUTHOR), De Angelis, Matteo (AUTHOR), Costabile, Michele (AUTHOR)
Publikováno v:
Journal of Marketing. Jul2024, Vol. 88 Issue 4, p107-128. 22p.
Autor:
Solano, Enrique, Marcy, Geoffrey W., Villarroel, Beatriz, Geier, Stefan, Streblyanska, Alina, Lombardi, Gianluca, Bär, Rudolf E., Andruk, Vitaly N.
We report on three optically bright, ~15th mag, point-sources within 10 arcsec of each other that vanished within 1 hour, based on two consecutive exposures at Palomar Observatory on 1952 July 19 (POSS I Red and Blue). The three point-sources have co
Externí odkaz:
http://arxiv.org/abs/2310.09035
Autor:
Villarroel, Carlos, Düring, Gustavo
We investigated the yielding phenomenon in the quasistatic limit using numerical simulations of soft particles. Two different deformation scenarios, simple shear (passive) and self-random force (active), and two interaction potentials were used. Our
Externí odkaz:
http://arxiv.org/abs/2310.05441
Publikováno v:
Published in "EdgeScience Magazine 49" on 15 March 2022 by the Society for Scientific Exploration
Astronomers occasionally detect an object having unexpected shape, unexplainable photometry, or unprecedented spectra that are inconsistent with our contemporary knowledge of the universe. Upon careful assessment, many of these anomalies are discarde
Externí odkaz:
http://arxiv.org/abs/2310.14895