Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 19646-19665 of 20501
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(Frontiers Media S.A., 2019)Active sensing refers to the concept of animals perceiving their environment while involving self-initiated motor acts. As a consequence of these motor acts, this activity produces direct and timely changes in the sensory ...
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(ELSEVIER, 2006-11-01)Very dense bidimensional systems of inelastic hard disks excited from the base are studied by means of Newtonian event driven molecular dynamics. A stationary regime is reached where almost perfect crystallographic order ...
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TiO2/SiO2 Composite for Efficient Protection of UVA and UVB Rays Through of a Solvent-Less Synthesis (Springer New York LLC, 2019)In an effort to discover new inorganic UV absorbers, titania included into silica was prepared using a solvent-less solid state method involving the pyrolysis of the as prepared precursor Chitosan·(TiOSO4)/SiO2, as an ...
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(Universidad de Chile, 2007)El objetivo general del presente trabajo de título es proponer un modelo de tipificación de proyectos de instalación en telecomunicaciones, con la finalidad de identificar proyectos entandarizables, permitiendo un análisis ...
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(E Schweizerbartsche Verlagsbuchhandlung, 2017)Humite minerals, including Ti-rich, hydroxyl-dominant chondrodite and clinohumite, occur in Paleozoic antigorite serpentinite in the La Cabana area, in the Chilean Coastal Cordillera (similar to 38 degrees 30'S- 73 degrees ...
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(Elsevier, 2004)We evaporated polycrystalline copper thin films of thickness between 10 and 100nm on silicon substrates with their native oxide under ultra-high-vacuum conditions. Some of them were exposed to air for a period ranging ...
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(Frontiers Media S.A., 2019)Enteroaggregative Escherichia coli (EAEC) infections are one of the most frequent causes of persistent diarrhea in children, immunocompromised patients and travelers worldwide. The most prominent colonization factors of ...
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(Nature Publishing Group, 2019)Oligodendrocyte precursor cells (OPCs) differentiate during postnatal development into myelin-forming oligodendrocytes, in a process distinguished by substantial changes in morphology and the onset of myelin gene expression. ...
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To index or not to index:|bTime-space trade-offs in search engines with positional ranking functions (Universidad de Chile, 2014)Web search has become an important part of day-to-day life. Web search engines are important tools that give access to the information stored in the web. The success of a web search engine mostly depends on its efficiency ...
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(Springer, 2019)It is not easy for teachers to re-author their professional identities to incorporate change after participation in professional development (PD). In this article, we seek to understand Chilean teachers' collective identity ...
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(Universidad de Chile, 2015)El proyecto modernizador aplicado en Chile durante las últimas décadas ha consolidado una estructura productiva preponderantemente rentista, dependiente de los ciclos del precio de las materias primas y de mercados altamente ...
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(Springer Berlin, 2008-10)We consider the Allen-Cahn equation "2 u+(1−u2)u = 0 in a bounded, smooth domain in R2, under zero Neumann boundary conditions, where " > 0 is a small parameter. Let 0 be a segment contained in , connecting ...
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(2010)We construct a new class of positive solutions for the classical elliptic problem ¢u ¡ u + up = 0; p > 2; in R2: We establish a deep relation between them and the following Toda system c2f00 j = efj¡1¡fj ¡ efj¡fj+1 in ...
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(Oxford University Press, 2020)The Neptune desert is a feature seen in the radius-period plane, whereby a notable dearth of short period, Neptune-like planets is found. Here, we report the Transiting Exoplanet Survey Satellite (TESS) discovery of a new ...
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(IOP Publishing, 2019)We report the detection of a hot Jupiter (M-p = 1.75(-0.17)(+0.14) M-J, R-p = 1.38 +/- 0.04R(J)) orbiting a middle-aged star (log g = 4.152(-0.043)(+0.030)) in the Transiting Exoplanet Survey Satellite (TESS) southern ...
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(Oxford Unv Press, 2020)We report the period, eccentricity, and mass determination for the Transiting Exoplanet Survey Satellite (TESS) single-transit event candidate TOI-222, which displayed a single 3000 ppm transit in the TESS 2-min cadence ...
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(Oxford, 2021)We present the bright (V-mag = 9.12), multiplanet system TOI-431, characterized with photometry and radial velocities (RVs). We estimate the stellar rotation period to be 30.5 +/- 0.7 d using archival photometry and RVs. ...
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TOI-481 b and TOI-892 b: Two Long-period Hot Jupiters from the Transiting Exoplanet Survey Satellite (IOP, 2020)We present the discovery of two new 10 day period giant planets from the Transiting Exoplanet Survey Satellite mission, whose masses were precisely determined using a wide diversity of ground-based facilities. TOI-481.b ...
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(Pontificia Universidad Católica de Chile. Facultad de Agronomía Ingeniería Forestal, 2016)The tolerances of filamentous Magellan fungi in peat were analyzed in the presence of structurally different petroleum hydrocarbons to assess their abilities for bioremediation in contaminated soils. Fungi on PDA (potato ...
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(Universidad de Chile, 2013)Los Senadores deben decidir constantemente por una política u otra, apoyando o rechazando legislaturas. Así, características personales, institucionales y culturales van marcando las opciones de cada sujeto, el que a su ...
