Browsing by Title Facultad de Ciencias Físicas y Matemáticas

Now showing items 6388-6407 of 20505

    • Duración de licencias y bienestar social 
      Padilla Belmar, Exequiel Francisco (Universidad de Chile, 2021)
      Cuando se quiere licitar una concesión como las de espectro radioeléctrico surge inmediatamente la pregunta sobre su tiempo de caducidad. Generalmente se asocia una baja (o sub) inversión a una concesión corta, pero con ...
    • Dureza en aguas de consumo humano y uso industrial, impactos y medidas de mitigación. Estudio de caso: Chile 
      Neira Gutiérrez, Marco Antonio (Universidad de ChilePrograma Cybertesis, 2006)
    • Dust and gas in the disk of HL TAURI: surface density, dust settling, and dust-to-gas ratio 
      Pinte, Christophe; Dent, William R. F.; Ménard, Francois; Hales, A.; Hill, T.; Cortes, P.; De Gregorio Monsalvo, Itziar (IOP Publishing, 2016)
      The recent ALMA observations of the disk surrounding HL Tau reveal a very complex dust spatial distribution. We present a radiative transfer model accounting for the observed gaps and bright rings as well as radial changes ...
    • The dust disk and companion of the nearby AGB star L-2 Puppis SPHERE/ZIMPOL polarimetric imaging at visible ... 
      Kervella, Pierre; Montargès, M.; Lagadec, E.; Ridgway, S. T.; Haubois, X.; Girard, J. H.; Ohnaka, K.; Perrin, G.; Gallenne, A. (ESO, 2015)
      The bright southern star L-2 Pup is a particularly prominent asymptotic giant branch (AGB) star, located at a distance of only 64 pc. We report new adaptive optics observations of L2 Pup at visible wavelengths with the ...
    • Dust Emission at 8 and 24 µm as Diagnostics of H II Region Radiative Transfer 
      Oey, M. S.; López Hernández, J.; Kellar, J. A.; Pellegrini, E. W.; Gordon, K. D.; Jameson, K. E.; Li, A.; Madden, S. C.; Meixner, M.; Roman Duval, Julia; Bot, C.; Rubio López, Mónica; Tielens, A. G. G. M. (IOP Publishing Ltd, 2017)
      We use the Spitzer Surveying the Agents of Galaxy Evolution (SAGE) survey of the Magellanic Clouds to evaluate the relationship between the 8 mu m polycyclic aromatic hydrocarbon (PAH) emission, 24 mu m hot dust emission, ...
    • Dust entrainment in photoevaporative winds: densities and imaging 
      Franz, R.; Ercolano, B.; Casassus Montero, Simón Pablo; Picogna, G.; Birnstiel, T.; Pérez, S.; Rab, Ch; Sharma, A. (EDP Sciences, 2022)
      Context. X-ray- and extreme-ultraviolet- (together: XEUV-) driven photoevaporative winds acting on protoplanetary disks around young T-Tauri stars may crucially impact disk evolution, affecting both gas and dust ...
    • Dust fluxes and iron fertilization in Holocene and Last Glacial Maximum climates 
      Lambert, Fabrice; Tagliabue, Alessandro; Shaffer, Gary; Lamy, Frank; Winckler, Gisela; Farías, Laura; Gallardo Klenner, Laura; De Pol-Holz, Ricardo (Amer Geophysical Union, 2015)
      Mineral dust aerosols play a major role in present and past climates. To date, we rely on climate models for estimates of dust fluxes to calculate the impact of airborne micronutrients on biogeochemical cycles. Here we ...
    • Dust modeling of the combined ALMA and SPHERE datasets of HD 163296. Is HD 163296 really a Meeus group II disk? 
      Muro Arena, G. A.; Dominik, C.; Waters, L. B. F. M.; Min, M.; Klarmann, L.; Ginski, C.; Isella, A.; Benisty, Myriam; Pohl, A.; Garufi, A.; Hagelberg, J.; Langlois, M.; Menard, F.; Pinte, Christophe; Sezestre, E.; Van der Plas, Gerrit; Villenave, M.; Delboulbe, A.; Magnard, Y.; Moeller-Nilsson, O.; Pragt, J.; Rabou, P.; Roelfsema, R. (ESO, 2018-06)
      Context. Multiwavelength observations are indispensable in studying disk geometry and dust evolution processes in protoplanetary disks. Aims. We aim to construct a three-dimensional model of HD163296 that is capable ...
    • The dust properties and physical conditions of the interstellar medium in the LMC massive star-forming complex N11 
      Galametz, M.; Hony, S.; Albrecht, M.; Galliano, F.; Cormier, D.; Lebouteiller, V.; Lee, M.; Madden, S.; Bolatto, A.; Bot, C.; Hughes, A.; Israel, F.; Meixner, M.; Oliviera, J.; Paradis, D.; Pellegrini, E.; Roman Duval, Julia; Rubio López, Mónica; Sewilo, M.; Fukui, Y.; Kawamura, A.; Onishi, T. (OXFORD UNIV PRESS, 2016)
      We combine Spitzer and Herschel data of the star-forming region N11 in the Large Magellanic Cloud (LMC) to produce detailed maps of the dust properties in the complex and study their variations with the interstellar-medium ...
    • Dust traps and warps in transitional protoplanetary disks 
      Marino Estay, Sebastián (Universidad de Chile, 2015)
      Actualmente se piensa que los planetas se forman alrededor de estrellas jovenes en discos circumestelares que pueden durar unos pocos Ma. Estos discos protoplanetarios evolucionan a traves de diferentes mecanismos. Dos ...
    • Dust-correlated centimetre-wave radiation from the M78 reflection nebula 
      Castellanos, Pablo; Casassus Montero, Simón; Dickinson, Clive; Vidal, Matías; Paladini, Roberta; Cleary, Kieran; Davies, Rodney D.; Davis, Richard J.; White, Glenn J.; Taylor, Angela C. (WILEY-BLACKWELL, 2011-02)
      An anomalous radio continuum component at cm-wavelengths has been observed in various sources, including dark clouds. This continuum component represents a new property of the ISM. In this work we focus on one particular ...
    • Dust-correlated cm wavelength continuum emission from translucent clouds ζ Oph and LDN 1780 
      Vidal, M.; Casassus Montero, Simón; Dickinson, C.; Witt, A. N.; Castellanos, P.; Davies, R. D.; Davis, R. J.; Cabrera, G.; Cleary, K.; Allison, J. R.; Bond, J. R.; Bronfman Aguiló, Leonardo; Bustos, R.; Jones, M. E.; Paladini, R.; Pearson, T. J.; Readhead, A. C. S.; Reeves, R.; Sievers, J. L.; Taylor, A. C. (2011)
      The diffuse cm wave IR-correlated signal, the ‘anomalous’ CMB foreground, is thought to arise in the dust in cirrus clouds.We present Cosmic Background Imager (CBI) cm wave data of two translucent clouds, ζ Oph and LDN ...
    • Dust-gas scaling relations and oh abundance in the galactic ISM 
      Nguyen, Hiep; Dawson, J. R.; Miville-Deschenes, M.-A.; Tang, Ningyu; Li, Di; Heiles, Carl; Murray, Claire E.; Stanimirovic, Snezana; Gibson, Steven J.; McClure-Griffiths, N. M.; Troland, Thomas; Bronfman Aguiló, Leonardo; Finger Camus, Ricardo (IOP Publishing, 2018)
      Observations of interstellar dust are often used as a proxy for total gas column density N-H. By comparing Planck thermal dust data (Release 1.2) and new dust reddening maps from Pan-STARRS 1 and 2MASS, with accurate ...
    • Dust/gas correlations from Herschel observations 
      Roman Duval, Julia; Israel, F. P.; Bolatto, Alberto; Hughes, A.; Leroy, A.; Meixner, M.; Gordon, K.; Madden, S. C.; Paradis, D.; Kawamura, A.; Li, A.; Sauvage, M.; Wong, T.; Bernard, J. P.; Engelbracht, C.; Hony, S.; Kim, S.; Misselt, K.; Okumura, K.; Ott, Jürgen; Panuzzo, P.; Pineda, J. L.; Reach, W. T.; Rubio López, Mónica (2010)
      12CO rotational emission lines and Hi 21 cm emission. This so-called “FIR excess” is especially noticeable near molecular clouds in the LMC, and has usually been interpreted as indicating the presence of a self-shielded ...
    • Duty Free shop en el paso Los Libertadores 
      Padilla Sánchez, Juan Carlos (Universidad de Chile, 2013)
      El objetivo principal de este estudio es elaborar un plan de negocios que contemple el crear un Duty Free en el Paso Los Libertadores de la comuna de Los Andes, consistente en hacer extensiva una actual franquicia aduanera ...
    • Dynamic and kinematic characterization of the impulsive wavemaker system in a numerical wave tank 
      Barraud, C.; Hernández, R. H. (Amer Inst. Physics, 2020)
      We study the dynamical response of a piston-type wavemaker in a numerical wave tank. The two-dimensional, fully viscous unsteady Navier-Stokes equations are solved on a two-phase flow configuration using the volume of fluid ...
    • Dynamic approximate maximum independent set of intervals, hypercubes and hyperrectangles 
      Henzinger M., Neumann S., Wiese A. (Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, 2020)
    • Dynamic Bayesian Network-Based Risk Assessment for Arctic Offshore Drilling Waste Handling Practices 
      Ayele, Yonas Zewdu; Barabady, Javad; López Droguett, Enrique (2016)
      The increased complexity of Arctic offshore drilling waste handling facilities, coupled with stringent regulatory requirements such as zero "hazardous" discharge, calls for rigorous risk management practices. To assess and ...
    • Dynamic behavior of sand with Nanoparticles. Comportement dynamique de Sable avec Nanoparticules 
      Ochoa Cornejo, Felipe Agustín (ICSMGE, 2017)
      This work presents an experimental investigation to examine the effect of Laponite-a synthetic nanoclay with high plasticity-on the dynamic behavior of sands. The experimental program considers cyclic triaxial and resonant ...
    • Dynamic control of beacon transmission rate with position accuracy in vehicular networks 
      Bolufé, Sandy; Montejo Sánchez, Samuel; Azurdia Meza, César; Céspedes, Sandra; Souza, Richard Demo; Fernández, Evelio M. G. (CEUR-WS, 2017)
      The proper performance of cooperative safety applications in vehicular networks depends of the exchange of beacon messages between neighboring vehicles. A challenge in these networks is to control the beacon transmission ...