Browsing by Title Facultad de Ciencias Físicas y Matemáticas

Now showing items 19695-19714 of 20921

    • The effect of house ads on multichannel sales 
      Goic Figueroa, Marcel; Álvarez, Rodolfo; Montoya, Ricardo (Elsevier, 2018-05)
      Similar to in-store displays in brick-and-mortar stores, house ads promote a set of specific products for customers who have reached the website. In contrast to general display advertising whose primary goal is to bring ...
    • The Effect of Ionic Liquid Pretreatment on the Bioconversion of Tomato Processing Waste to Fermentable ... 
      Allison, Brittany J.; Canales Cadiz, Juan; Karuna, Nardrapee; Jeoh, Tina; Simmons, Christopher W. (Humana Press Inc., 2016)
      Tomato pomace is an abundant lignocellulosic waste stream from industrial tomato processing and therefore a potential feedstock for production of renewable biofuels. However, little research has been conducted to determine ...
    • The effect of ISM absorption on stellar activity measurements and its relevance for exoplanet studies 
      Fossati, L.; Marcelja, S. E.; Staab, D.; Cubillos, P. E.; France, K.; Haswell, C. A.; Ingrassia, S.; Jenkins, James Stewart; Koskinen, T.; Lanza, A. F.; Redfield, S.; Youngblood, A.; Pelzmann, G. (EDP Sciences, 2017-05)
      Past ultraviolet and optical observations of stars hosting close-in Jupiter-mass planets have shown that some of these stars present an anomalously low chromospheric activity, significantly below the basal level. For the ...
    • The effect of molecular weight and hydrolysis degree of poly(vinyl alcohol)(PVA) on the thermal and mechanical ... 
      Restrepo, Iván; Medina, Carlos; Meruane Naranjo, Viviana; Akbari Fakhrabadi, A.; Flores, Paulo; Rodríguez Llamazares, Saddys María (Associação Brasileira de Polímeros, 2018-06)
      The effect of molecular weights and hydrolysis degrees (HD) of polyvinyl alcohol (PVA) on thermal and mechanical properties and crystallinity of polylactic acid (PLA)/PVA blends was investigated. Blends were prepared by ...
    • The effect of nuclear gas distribution on the mass determination of supermassive black holes 
      Mejía Restrepo, J. E.; Lira Teillery, Paulina; Netzer, H.; Trakhtenbrot, B.; Capellupo, D. M. (Nature Publishing Group, 2018)
      Supermassive black holes reside in the nuclei of most galaxies. During their active episodes, black holes are powered by accretion discs where gravitational energy is converted into radiation(1). Accurately determining ...
    • The effect of phased recurrent units in the classification of multiple catalogues of astronomical light curves 
      Donoso Oliva, C.; Cabrera Vives, G.; Protopapas, P.; Carrasco, Davis; Estévez, P. A. (Oxford, 2021)
      In the new era of very large telescopes, where data is crucial to expand scientific knowledge, we have witnessed many deep learning applications for the automatic classification of lightcurves. Recurrent neural networks ...
    • The efficiency of nanolime and dibasic ammonium phosphate in the consolidation of beige limestone from the ... 
      Shekofteh, Atefeh; Molina, Eduardo; Rueda-Quero, Lucía; Arizzi, Anna; Cultrone, Giuseppe (Springer Verlag, 2019)
      The limestone used at the Pasargadae World Heritage Site in Iran, an outstanding open-air architectural heritage site dating from the Achaemenid period (sixth century BC), has suffered weathering due to interaction with ...
    • The efficient IPO market hypothesis: Theory and evidence 
      James, KR; Valenzuela, M (Cambridge University Pressjournals_subscriptions@cup.cam.ac.uk, 2020)
    • The electromagnetic counterpart of the binary neutron star merger LIGO/Virgo GW170817. I. discovery of the ... 
      Soares Santos, M.; Holz, Holz, D. E.; Annis, J.; Medina, G. E.; Muñoz Vidal, Ricardo Rodrigo (IOP Publishing Ltd., 2017)
      We present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational-wave emission, GW170817. Our observations commenced 10.5 hr post-merger, ...
    • The electromagnetic counterpart of the binary neutron star merger LIGO/Virgo GW170817. II. UV, optical, and ... 
      Cowperthwaite, P. S.; Berger, E.; Villar, V. A.; Medina, G. E.; Muñoz Vidal, Ricardo Rodrigo (IOP Publishing Ltd., 2017)
      We present UV, optical, and near-infrared (NIR) photometry of the first electromagnetic counterpart to a gravitational wave source from Advanced Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo, the binary ...
    • The Emergence of the Infrared Transient VVV-WIT-06 
      Minniti, D.; Saito, R. K.; Forster, Francisco; Pignata Libralato, Giuliano; Ivanov, V. D.; Lucas, P. W.; Beamin, J. C.; Borissova, J.; Catelan, M.; González, O. A.; Hempel, M.; Hsiao, E. Y.; Kurtev, R.; Majaess, D.; Masetti, N.; Morrell, N. I.; Phillips, M. M.; Pullen, J. B.; Rejkuba, M.; Smith, L.; Surot, F.; Valenti, E.; Zoccali, M. (Institute of Physics, 2017)
      We report the discovery of an enigmatic large-amplitude (DKs > 10.5 mag) transient event in near-IR data obtained by the VISTA Variables in the Via Lactea (VVV) ESO Public Survey. The object (designated VVV-WIT- 06) is ...
    • The entrepreneurial profile after failure 
      Espinoza-Benavides, Jorge; Díaz, David (Emerald Group Publishing Ltd., 2019)
      Purpose: The purpose of this paper is to examine the profile of entrepreneurs who failed in previous businesses, but despite their initial failure, decide to start or maintain another business. Based on the literature, ...
    • The environmental geochemical baseline, background and sources of metal and metalloids present in urban, ... 
      Valdés Durán, Ana Verónica; Aliaga, Guillermo; Deckart, Katja; Karas, Cyrus; Cáceres Lillo, Dante Daniel; Nario Mouat, María Adriana (Springer, 2021)
      The importance of environmental geochemistry baseline in soils of O ' Higgins Region, Chile, since it hosts in its eastern area one of the major Cu-Mo producing mines in the country, is to establish and explain relationships ...
    • The Epistemic Indispensability Argument 
      Soto, Cristian (Springer Netherlands, 2019)
      This article elaborates the epistemic indispensability argument, which fully embraces the epistemic contribution of mathematics to science, but rejects the contention that such a contribution is a reason for granting reality ...
    • The evolution of the cosmic microwave background temperature Measurements of T(CMB) at high redshift from ... 
      Noterdaeme, P.; Petitjean, P.; Srianand, R.; Ledoux, C.; López, S. (EDP SCIENCES S A,, 2011-02)
      A milestone of modern cosmology was the prediction and serendipitous discovery of the cosmic microwave background (CMB), the radiation leftover after decoupling from matter in the early evolutionary stages of the Universe. ...
    • The evolution of the Dominga Fe-Cu deposit (northern Chile): Insights from mineral textures and micro-CT analysis 
      Heuser, Gert; Arancibia, Gloria; Veloso, Eugenio E.; Cembrano, José; Oliveira Cordeiro, Pedro Filipe; Nehler, Mathias; Bracke, Rolf (Elsevier, 2020)
      The Fe-Cu Dominga deposit (2082 Mt at 23% Fe, 0.07% Cu), located in the Coastal Cordillera of northern Chile, is hosted by volcanic rocks of the Punta del Cobre Formation (131.5 +/- 1.5 Ma zircon U-Pb) and into subvolcanic ...
    • The evolution of the galaxy stellar mass function from Z~2 to Z~5 
      Barrientos Acevedo, Daniela Victoria (Universidad de Chile, 2019)
      La Función de Masa Estelar de Galaxias (GSMF) es una herramienta muy importante para estudiar la evolución de galaxias a través del tiempo. Corresponde a una medición de la densidad de número de galaxias por rango de ...
    • The evolution of the Si IV content in the Universe from the epoch of reionization to cosmic noon 
      D'Odorico, V.; Finlator, K.; Cristiani, S.; Cupani, G.; Perrotta, S.; Calura, F.; Centurion, M.; Becker, G.; Berg, T. A. M.; López, S.; Ellison, S.; Pomante, E. (Oxford, 2022)
      We investigate the abundance and distribution of metals in the high-redshift intergalactic medium and circum-galactic medium through the analysis of a sample of almost 600 Si iv absorption lines detected in high and ...
    • The evolution of the star formation rate function and cosmic star formation rate density of galaxies at z ∼ 1–4 
      Katsianis, Antonios; Tescari, E.; Blanc Mendiberri, Guillermo; Sargent, M. (Royal Astronomical Society, 2017)
      We investigate the evolution of the galaxy star formation rate function (SFRF) and cosmic star formation rate density (CSFRD) of z ∼ 1–4 galaxies, using cosmological smoothed particle hydrodynamic (SPH) simulations and ...
    • The evolution of the star formation rate function in the Eagle simulations: a comparison with UV, IR and H ... 
      Katsianis, A.; Blanc Mendiberri, Guillermo; Lagos, C. P.; Tejos, Nicolás; Bower, R. G.; Alavi, A.; González Corvalán, Valentino; Theuns, T.; Schaller, M.; López Morales, Sebastián (Oxford university press, 2017)
      We investigate the evolution of the galaxy star formation rate function (SFRF) and cosmic star formation rate density (CSFRD) of z similar to 0-8 galaxies in the Evolution and Assembly of GaLaxies and their Environments ...