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Item Ciencia Podcast T01E05: Biología: Litiasis renal(Universidad Viña del Mar, 2021-11-25) Maulén, AliroEl académico de la Escuela de Ciencias, Aliro Maulen, nos habla sobre la litiasis renal. Una enfermedad crónica caracterizada por la formación de cálculos en el aparato urinario, cuyo tratamiento no se fundamenta sólo en medidas médicas o quirúrgicas.Item The vertical structure of debris disks and the impact of gas.(2022-02-16) Olofsson, Johan; Thébault, Philippe; Kral, Quentin; Bayo, Amelia; Boccaletti, Anthony; Godoy, Nicolás; Henning, Thomas; van Holstein, Rob G.; Maucó, Karina; Milli, Julien; Montesinos, Matías; Rein, Hanno; Sefilian, Antranik A.The vertical structure of debris discs provides clues about their dynamical evolution and the collision rate of the unseen planetesimals. Thanks to the ever-increasing angular resolution of contemporary instruments and facilities, we are beginning to constrain the scale height of a handful of debris discs, either at near-infrared or millimeter wavelengths. None the less, this is often done for individual targets only. We present here the geometric modeling of eight discs close to edge-on, all observed with the same instrument (SPHERE) and using the same mode (dual-beam polarimetric imaging). Motivated by the presence of CO gas in two out of the eight discs, we then investigate the impact that gas can have on the scale height by performing N-body simulations including gas drag and collisions. We show that gas can quickly alter the dynamics of particles (both in the radial and vertical directions), otherwise governed by gravity and radiation pressure. We find that, in the presence of gas, particles smaller than a few tens of microns can efficiently settle toward the midplane at the same time as they migrate outward beyond the birth ring. For second generation gas (Mgas ≤ 0.1 M⊕), the vertical settling should be best observed in scattered light images compared to observations at millimeter wavelengths. But if the gas has a primordial origin (Mgas ≥ 1 M⊕), the disc will appear very flat both at near-infrared and sub-mm wavelengths. Finally, far beyond the birth ring, our results suggest that the surface brightness profile can be as shallow as ∼−2.25.Item Ciencia Podcast T01E09: Física: Mediciones y errores(Universidad Viña del Mar, 2021-11-25)¿Qué es medir?, ¿Cómo medimos?. Hablamos sobre el proceso de mediciones y los errores que conlleva ello.Item Ciencia Podcast T01E01: Química: Cadena transportadora de electrones y fosforilación oxidativa(Universidad Viña del Mar, 2021-11-25) Escalona, EduardoEn este episodio Eduardo Escalona, académico de la Escuela de Ciencias de la UVM, describe los aspectos fundamentales de la estructura, funcionamiento e inhibidores de la Cadena transportadora de electrones y la Fosforilación oxidativa.Item ConCiencia T01E09: Ciencia y Género(Universidad Viña del Mar, 2021-01-08) Hernández, Carla; Rojas, Eva; Maulen, Aliro; Escalona, Eduardo; Echiburu, MauricioLos académicos Eva Rojas, Eduardo Escalona, Mauricio Echiburu y Aliro Maulen conversaron con la Doctora de la USACH Carla Hernández, sobre temas de equidad de género en ciencias.Item Teaching physics in real-life contexts: The Beirut explosion(2023-04-01) Echiburu, Mauricio; Hernández, Carla; Pino, MiguelTeaching physics in real-life contexts continues to be a challenge for teachers at different edu cational levels. In this article, three Context-Rich Problems are proposed to be implemented in the classroom for higher education, using the explosion that occurred in Beirut as a case study. These problems require the search and analysis of real data, integrating technologies as tools to learn physics. In particular, the analysis of images, videos, maps and audio recordings is suggested. The proposed activities are designed to promote active learning of classical mechanics subjects and the development of collaborative skills. The results of each problem allow a discussion based on scientific evidence in the classroom.Item Study of the effect of seismically-induced geoelectric and geomagnetic fields on secondary particle detection at a LAGO site(2022-03-18) Coloma Borja, Diego Alberto; Carrera Jarrin, Edgar; Echiburu, Mauricio; LAGO CollaborationThe LAGO (Latin American Giant Observatory) project is an extended Astroparticle Observatory at global scale. It is mainly oriented to basic research on three branches of Astroparticle physics: the Extreme Universe, Space Weather phenomena, and Atmospheric Radiation at ground level. This work is framed in the latter branch, its aim is to study the potential effects on extensive air showers from changes in geoelectric and geomagnetic fields, induced by the onset of seismic activity. For this purpose, simulations for flux of secondaries are performed with ARTI, a tool developed by LAGO that combines Magnetocosmics, CORSIKA, and Geant4 to account, respectively, for the propagation of a shower by a primary particle, geomagnetic corrections, and detector response. Using ARTI, we have calculated the radiation background at the LAGO Site in Universidad San Francisco de Quito (2200 m.a.s.l). Regular conditions for the Earth's electromagnetic field are taken from the NCEI Geomagnetic Calculator for specific fair-weathered days above the location. Variations from this regularity are introduced based on relevant studies on seismic activity. The results show that there exists an effect on the number of secondary particles at ground level, which could, in principle, be detected by a LAGO WCD detector.Item Ciencia Podcast T01E08: Física: Tiempo y distancia(Universidad Viña del Mar, 2021-11-25)En este episodio se habla sobre los conceptos de tiempo y distancia, cómo los podemos medir y cuales son las unidades patrón relacionadas con ellas.Item ConCiencia T01E05: Neutrinos(Universidad Viña del Mar, 2020-11-10) Helo, Juan Carlos; Rojas, Eva; Escalona, Eduardo; Echiburu, MauricioEl académico de la Universidad de la Serena, Juan Carlos Helo, habla sobre estas casi indetectables partículas. Nos acompañan en este episodio los académicos del DCB de la UVM Eva Rojas y Eduardo Escalona.Item ConCiencia T02E05: Aprendizaje Servicio y Competencias Ciudadanas(Universidad Viña del Mar, 2021-05-17) Ramírez Vega, Chenda; Escalona, Eduardo; Echiburu, MauricioLa académica de la Universidad Viña del Mar, Dra. Chenda Ramírez, conversó con nosotros sobre el desarrollo de las competencias ciudadanas en los estudiantes de la educación superior, a través del aprendizaje servicio.