Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 11525-11544 of 20545
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Investigating Cepheid l Carinae' s cycle-to-cycle variations via contemporaneous velocimetry and ... (Oxford University Press, 2016)Baade-Wesselink-type (BW) techniques enable geometric distance measurements of Cepheid variable stars in the Galaxy and the Magellanic clouds. The leading uncertainties involved concern projection factors required to ...
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(Elsevier Inc., 2019)Introduction: Apical periodontitis (AP) and cardiovascular diseases (CVDs) are chronic conditions triggered by an inflammatory process and sharing similar pathogeneses and molecular players. Previous studies have suggested ...
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(Pergamon-Elsevier, 2020)The purpose of this work is to highlight the impact of input parameters uncertainty in discrete fracture network (DFN) models and their engineering applications. We show how the error of an input parameter, here the ...
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(EDP, 2020)Context. Young stars interact with their accretion disk through their strong magnetosphere.Aims. We aim to investigate the magnetospheric accretion/ejection process in the young stellar system DoAr 44 (V2062 Oph).Methods. ...
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(Copernicus Gesellschaft MBH, 2020)The rapid urbanization and industrialization of northern China in recent decades has resulted in poor air quality in major cities like Beijing. Transport of air pollution plays a key role in determining the relative influence ...
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(Amer Meteorological Soc, 2020)In desert environments, intense radiative cooling of the surface during the night leads to rapid cooling of the adjacent air, resulting in a strong temperature inversion conducive to cold-air-pool formation. In this work ...
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(Materials & Energy Research Center-Merc, 2017)In this work, we use Drude-Lorents model description to study the radiation of a charged particles moving in a homogeneous dispersive medium. A suitable quantized electromagnetic field for such medium is utilized to obtain ...
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Investigation of the conspicuous infrared star cluster and star-forming region "RCW 38 IR cluster" (2008-01)The infrared star cluster RCW 38 IR Cluster, which is also a massive star-forming region, is investigated. The results of observations with the SEST (Cerro La Silla, Chile) telescope on the 2.6-mm (CO)-C-12 spectral line ...
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(Oxford University Press, 2018)We present observations of the Herbig Ae star HD 169142 with the VLT/SPHERE instruments InfraRed Dual-band Imager and Spectrograph (IRDIS) (K1K2 and H2H3 bands) and the Integral Field Spectrograph (IFS) (Y, J and H bands). ...
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(Elsevier, 2015)The conservation of archaeological heritage is of major importance for preserving the scientific, ethnographic and artistic values of past cultures. Once archaeological sites are exposed after being buried for centuries, ...
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(Universidad de ChileCyberDocs, 2011)
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(PERGAMON-ELSEVIER SCIENCE, 2010-11-01)Despite its potential economic and environmental importance, the study of trace metals in supergene (secondary) Cu-sulfides has been seriously overlooked in the past decades. In this study, the concentration and mineralogical ...
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(Universidad de Chile, 2022)El derecho a la participación de los niños, niñas y adolescentes en los procesos que afectan sus vidas exige que su intervención sea significativa. Esto implica que no basta solo con escuchar a los niños, niñas y ...
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(Elsevier, 2016)Iodine enrichment in the Atacama Desert of northern Chile is widespread and varies significantly between reservoirs, including nitrate-rich "caliche" soils, supergene Cu deposits and marine sedimentary rocks. Recent studies ...
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(SPRINGER, 2009-08)Recent studies have suggested the involvement of highly saline deep formation waters that modified preexisting Cu assemblages to form atacamite during supergene oxidation of Cu deposits in the Atacama region. In this report, ...
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(Blackwell, 2006)We consider a fast solar wind-type plasma consisting of electrons, a protons background, and a much more tenuous alpha particle beam. It is shown that such system is unstable against ion acoustic-like waves triggered by ...
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(EDP Sciences, 2013)Context. Ionising stars reshape their original molecular cloud and impact star formation, leading to spectacular morphologies such as bipolar nebulae around Hii regions. Molecular clouds are structured in filaments where ...
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(Universidad de Chile, 2012)Uno de los problemas claves en el estudio de la formación de estrellas es determinar si acaso el paradigma de formación de estrellas de baja masa, específicamente, contracción gravitacional y la posterior presencia de un ...
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(Universidad de Chile, 2019)Existen problemas de ambigüedad en la estimación de los parámetros del plasma ionosférico entre los 130 y los 300 km en los Radares de Dispersión Incoherente (ISR). En esos rangos, el ISR es incapaz de distinguir entre ...
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(Springer, 2016)The lithosphere and the atmosphere/ionosphere continuously exchange energy through various coupling mechanisms. In particular, the earth surface displacement caused by earthquakes, volcanoes and tsunamis can manifest as ...