Artículos de revistas: Recent submissions

Now showing items 1521-1540 of 7550

    • Significant decrease of photovoltaic power production by aerosols. The case of Santiago de Chile 
      Hoyo, Mirko del; Rondanelli Rojas, Roberto; Catalán Escobar, Rodrigo Ignacio (Elsevier, 2020)
      Santiago de Chile frequently suffers from atmospheric pollution that contributes to the decrease of solar irradiance on the surface, leading to losses in the energy output of photovoltaic systems. In this study, a simple ...
    • RF-MEP: A novel random forest method for merging gridded precipitation products and ground-based measurements 
      Báez Villanueva, Óscar; Zambrano Bigiarini, Mauricio; Beck, Hylke; McNamara, Ian; Ribbe, Lars; Nauditt, Alexandra; Birkel, Christian; Verbist, Koen; Giraldo Osorio, Juan Diego; Thinh, Nguyen Xuan (Elsevier, 2020)
      The accurate representation of spatio-temporal patterns of precipitation is an essential input for numerous environmental applications. However, the estimation of precipitation patterns derived solely from rain gauges is ...
    • Revealing the CO X-factor in Dark Molecular Gas through Sensitive ALMA Absorption Observations 
      Luo, Gan; Li, Di; Tang, Ningyu; Dawson, J. R.; Dickey, John; Bronfman Aguiló, Leonardo; Qin, Sheng-Li; Gibson, Steven; Plambeck, Richard; Finger Camus, Ricardo; Green, Anne J.; Mardones Pérez, Diego; Koo, Bon-Chul; Lo, Nadia (IOP, 2020)
      Carbon-bearing molecules, particularly CO, have been widely used as tracers of molecular gas in the interstellar medium (ISM). In this work, we aim to study the properties of molecules in diffuse, cold environments, where ...
    • Resolving the FU Orionis System with ALMA: Interacting Twin Disks? 
      Pérez Márquez, Sebastián; Hales, Antonio; Liu, Hauyu Baobab; Zhu, Zhaohuan; Casassus Montero, Simón; Williams, Jonathan; Zurlo, Alice; Cuello, Nicolás; Cieza, Lucas; Príncipe, David (IOP, 2020)
      FU Orionis objects are low-mass pre-main sequence stars characterized by dramatic outbursts several magnitudes in brightness. These outbursts are linked to episodic accretion events in which stars gain a significant portion ...
    • Post-melting oxidation of highly primitive basalts from the southern Andes 
      Tassara, Santiago; Reich Morales, Martín; Cannatelli, Claudia; Konecke, B. A.; Kausel Kausel, Domínica; Morata Céspedes, Diego; Barra, Fernando; Simon, A. C.; Fiege, A.; Morgado, E.; Leisen, Mathieu (Pergamon-Elsevier, 2020)
      The oxygen fugacity (fO(2)) of the Earth's upper mantle and its melting products is an important parameter in the geochemical evolution of arc magmas and their connection with the continental crustal construction and growth. ...
    • Holocene glacier behavior around the northern Antarctic Peninsula and possible causes 
      Kaplan, M. R.; Strelin, J. A.; Schaefer, J. M.; Peltier, C.; Martini, M. A.; Flores, E.; Winckler, G.; Schwartz, R. (Elsevier, 2020)
      We obtained 49 new Be-10 ages that document the activity of the former Northern Antarctic Peninsula Ice Sheet, and subsequently the James Ross Island Ice Cap and nearby glaciers, from the end of the last glacial period ...
    • Characterization of photochemically grown Pd loaded WO3 thin films and its evaluation as ammonia gas sensor 
      Castillo, C.; Cabello, G.; Chornik Aberbuch, Boris; Huentupil, Y.; Buono Core, G. E. (Elsevier, 2020)
      Pd-loaded tungsten oxide thin films have been successfully fabricated by direct UV irradiation of bis(beta-diketonate)dioxotungsten(VI) and Pd(II) precursor complexes spin-coated on Si(100) substrates. X-ray diffraction ...
    • A mixed integer programming approach for multi-action planning for threat management 
      Salgado Rojas, José; Álvarez Miranda, Eduardo; Hermoso, Virgilio; García-Gonzalo, Jordi; Weintraub Pohorille, Andrés (Elsevier, 2020)
      Planning for management actions that address threats to biodiversity is important for securing its long term persistence. However, systematic conservation planning (SCP) has traditionally overlooked this aspect and just ...
    • RefPlanets: Search for reflected light from extrasolar planets with SPHERE/ZIMPOL 
      Hunziker, S.; Schmid, H. M.; Mouillet, D.; Milli, J.; Zurlo, Alice; Abe, L.; Avenhaus, H.; Baruffolo, A.; Bazzon, A.; Boccaletti, A.; Baudoz, P.; Beuzit, J. L.; Carbillet, M.; Chauvin, G.; Dohlen, K.; Chauvin, G.; Claudi, R.; Costille, A.; Daban, J.-B.; Desidera, S.; Dohlen, K.; Dominik, C.; Downing, M.; Engler, N.; Feldt, M.; Fusco, T.; Ginski, C.; Gisler, D.; Girard, J. H.; Gratton, R.; Henning, Th.; Hubin, N.; Kasper, M.; Keller, C. U.; Langlois, M.; Lagadec, E.; Martínez, P.; Maire, A.-L.; Menard, F.; Meyer, M. R.; Pavlov, A.; Pragt, J.; Puget, P.; Quanz, S. P.; Rickman, E.; Roelfsema, R.; Salasnich, B.; Sauvage, J.-F.; Siebenmorgen, R.; Sissa, E.; Snik, F.; Suárez, M.; Szulágyi, J.; Thalmann, Ch.; Turatto, M.; Udry, S.; Van Holstein, R. G.; Vigan, A.; Wildi, F. (EDP ​​Sciences, 2020)
      Aims. RefPlanets is a guaranteed time observation programme that uses the Zurich IMaging POLarimeter (ZIMPOL) of Spectro-Polarimetric High-contrast Exoplanet REsearch instrument at the Very Large Telescope to perform a ...
    • Optimal prefix free codes with partial sorting 
      Barbay, Jérémy (MDPI, 2020)
      We describe an algorithm computing an optimal prefix free code for n unsorted positive weights in time within O(n(1+lg alpha))subset of O(nlgn), where the alternation alpha is an element of[1..n-1] approximates the minimal ...
    • Identification of geochemical anomalies using fractal and LOLIMOT Neuro-Fuzzy modeling in Mial Area, Central Iran 
      Shahsavari, M. Alipour; Afzal, P.; Hekmatnejad, A. (Shahrood University of Technology, 2020)
      The Urumieh-Dokhtar Magmatic Arc (UDMA) is recognized as an important porphyry, disseminated, vein-type and polymetallic mineralization arc. The aim of this study is to identify and subsequently determine geochemical ...
    • Second-order characterizations of quasiconvexity and pseudoconvexity for differentiable functions with ... 
      Khanh, Pham Duy; Phat, Vo Thanh (Springer, 2020)
      For a C-2-smooth function on a finite-dimensional space, a necessary condition for its quasiconvexity is the positive semidefiniteness of its Hessian matrix on the subspace orthogonal to its gradient, whereas a sufficient ...
    • Potential mineral resources of the Chilean offshore: an overview 
      García, Marcelo; Correa Drubi, Jorge; Maksaev, Víctor; Townley Callejas, Brian (Servicio Nacional Geología Minerva, 2020)
      The seabed included in the Chilean Exclusive Economic Zone (EEZ) has proper conditions to originate and host different ore deposits, but its geological knowledge is scarce and scattered. The existent studies are very limited ...
    • Local details versus effective medium approximation: A study of diffusion in microfluidic random networks ... 
      Ponce, Washington; Cordero Garayar, María Luisa (Amer Physical Soc, 2020)
      We measured the effective diffusion coefficient in regions of microfluidic networks of controlled geometry using the fluorescence recovery after photobleaching (FRAP) technique. The geometry of the networks was based on ...
    • Precursors to plastic failure in a numerical simulation of CuZr metallic glass 
      Sepúlveda Macías, Matías; Gutiérrez Gallardo, Gonzalo; Lund Plantat, Fernando (IOP, 2020)
      We deform, in pure shear, a thin sample of Cu50Zr50 metallic glass using a molecular dynamics simulation up to, and including, failure. The experiment is repeated ten times in order to have average values and standard ...
    • Perfect Brewster transmission through ultrathin perforated films 
      Pham, K.; Maruel, A.; Mercier, F.-J.; Felix, S.; Cordero Garayar, María Luisa; Horvath, Camila (Elsevier, 2020)
      We address the perfect transmission of a plane acoustic wave at oblique incidence on a perforated, sound penetrable or rigid, film in two-dimensions. It is shown that the Brewster incidence theta* realizing so-called ...
    • Ore-waste discrimination with adaptive sampling strategy 
      Santibáñez Leal, Felipe; Ortiz, Julián; Silva, Jorge F. (Springer, 2020)
      Grade control and short-term planning determine the performance of a mining project. Improving this decision, by collecting the most informative samples (data) may have significant financial impact on the project. In this ...
    • Neighborhood covering and independence on P4-tidy graphs and tree-cographs 
      Durán, Guillermo; Safe, Martín; Warnes, Xavier (Springer, 2020)
      Given a simple graph G, a set C subset of V(G)\documentclass[12pt] is a neighborhood cover set if every edge and vertex of G belongs to some G[v] with v is an element of C\documentclass[12pt] denotes the subgraph of G ...
    • Floquet boundary states in AB-stacked graphite 
      Calvo, Hernán L.; Barrios Vargas, Jose E.; Foa Torres, Luis (American Physical Society, 2020)
      We report on the effect of laser illumination with circularly polarized light on the electronic structure of AB-stacked graphite samples. By using Floquet theory in combination with Green's function techniques, we find ...
    • Dynamic properties of a sand–nanoclay composite 
      Ochoa Cornejo, Felipe; Bobet, Antonio; Johnston, Cliff; Santagata, Marika; Sinfield, Joseph V. (ICE Publishing, 2020)
      The paper describes the influence of 1-3% (by dry mass of sand) Laponite, a highly plastic synthetic nanoclay, on the dynamic properties of Ottawa sand, based on undrained resonant column tests. The effect of Laponite ...