Facultad de Ciencias Físicas y Matemáticas: Recent submissions

Now showing items 6721-6740 of 22292

    • Las aguas subterráneas del Oasis de Pica: patrones de circulación y procesos de contaminación en el Desierto ... 
      Placencia Marín, Gisella Gabriela (Universidad de Chile, 2020)
      Este trabajo de investigación ha abordado el estudio hidrogeoquímico del acuífero de Pica, Región de Tarapacá, norte de Chile. Situado en el Piedemonte Andino, en el borde oriental de la Depresión Central, entre los 20°14 ...
    • Mineralogía de depósitos de relave en Chile y relación con yacimientos de origen: potencial para la ... 
      Kotthoff Cáceres, Karen Francisca (Universidad de Chile, 2020)
      Según datos de Servicio Nacional de Geología y Minería (SERNAGEOMIN), actualmente se producen más de un millón y medio de toneladas de depósitos de relaves al día; con un total de 740 catastrados en todo el país. El Buitre, ...
    • Mechanical Fixation by Porphyrin Connection: Synthesis and Transport Studies of a Bicyclic Dimer 
      Zwick, Patrick; Weiland, Kevin J.; Malinčík, Juraj; Stefani, Davide; Häussinger, Daniel; Van der Zant, Herre S. J.; Dulic, Diana; Mayor, Marcel (American Chemical Society, 2020)
      The bowl-shaped, 3-fold interlinked porphyrin dimer 2 was obtained in respectable yields during macrocyclization attempts. Its bicyclic structure, consisting of a macrocycle made of a pair of acetylene interlinked ...
    • Kinematic study of the molecular gas associated with two cometary globules in Sh2-236 
      Ortega, M. E.; Paron, S.; Areal, M. B.; Rubio López, Mónica (EDP Sciences, 2020)
      Aims. Cometary globules, dense molecular gas structures exposed to UV radiation, are found inside HII regions. Understanding the nature and origin of these structures through a kinematic study of the molecular gas could ...
    • Highly efficient multifunctional graphene/chitosan/magnetite nanocomposites for photocatalytic degradation ... 
      Maruthupandy, Muthuchamy; Muneeswaran, Thillaichidambaram; Anand, Muthusamy; Quero, Franck (Elsevier, 2020)
      Multifunctional chitosan/magnetite (CS/Fe3O4) and graphene/chitosan/magnetite (Gr/CS/Fe3O4) nanocomposites (NCs) were synthesized using a simple hydrothermal method. The NCs were subsequently evaluated as magnetic ...
    • Geostatistics in the presence of geological boundaries: Exploratory tools for contact analysis 
      Maleki, Mohammad; Emery, Xavier (Elsevier, 2020)
      Identification and categorization of geological, geotechnical, or geometallurgical domains is a common practice in the modeling of mineral deposits, in order to account for the controls exerted by categorical variables ...
    • Euclid: The reduced shear approximation and magnification bias for Stage IV cosmic shear experiments? 
      Deshpande, A. C.; Kitching, T. D.; Cardone, V. F.; Taylor, P. L.; Casas, S.; Camera, S.; Carbone, C.; Kilbinger, M.; Pettorino, V.; Sakr, Z.; Sapone, Domenico; Tutusaus, I.; Auricchio, N.; Bodendorf, C.; Bonino, D.; Brescia, M.; Capobianco, V.; Carretero, J.; Castellano, M.; Cavuoti, S.; Cledassou, R.; Congedo, G.; Conversi, L.; Corcione, L.; Cropper, M.; Dubath, F.; Dusini, S.; Fabbian, G.; Franceschi, E.; Fumana, M.; Garilli, B; Grupp, F.; Hoekstra, H.; Hormuth, F.; Israel, H.; Jahnke, K.; Kermiche, S.; Kubik, B.; Kunz, M.; Lacasa, F.; Ligori, S.; Lilje, P. B.; Lloro, I.; Maiorano, E.; Marggraf, O.; Massey, R.; Mei, S.; Meneghetti, M.; Meylan, G.; Moscardini, L.; Padilla, C.; Paltani, S.; Pasian, F.; Pires, S.; Polenta, G.; Poncet, M.; Raison, F.; Rhodes, J.; Roncarelli, M.; Saglia, R.; Schneider, P.; Secroun, A.; Serrano, S.; Sirri, G.; Starck, J. L.; Sureau, F.; Taylor, A. N.; Tereno, I.; Toledo Moreo, R.; Valenziano, L.; Wang, Y.; Zoubian, J. (EDP Sciences, 2020)
      Context. Stage IV weak lensing experiments will offer more than an order of magnitude leap in precision. We must therefore ensure that our analyses remain accurate in this new era. Accordingly, previously ignored systematic ...
    • Hydroclimate of the Andes part I: main climatic features 
      Espinoza, Jhan Carlo; Garreaud Salazar, René; Poveda, Germán; Arias, Paola; Molina Carpio, Jorge; Masiokas, Mariano; Viale, Maximiliano; Scaff, Lucía (Frontiers Media, 2020)
      The Andes is the longest cordillera in the world and extends from northern South America to the southern extreme of the continent (from 11 degrees N to 53 degrees S). The Andes runs through seven countries and is characterized ...
    • Episodic accretion constrained by a rich cluster of outflows 
      Nony, T.; Motte, F.; Louvet, F.; Plunkett, A.; Gusdorf, A.; Fechtenbaum, S.; Pouteau, Y.; Lefloch, B.; Bontemps, S.; Molet, J.; Robitaille, J-F (EDP Sciences, 2020)
      Context. The accretion history of protostars remains widely mysterious, even though it represents one of the best ways to understand the protostellar collapse that leads to the formation of stars.Aims. Molecular outflows, ...
    • Environmental costs of water transfers 
      Vargas, Cristian A.; Garreaud Salazar, René; Barra, Ricardo; Vásquez Lavín, Felipe; Saldías, Gonzalo S.; Parra, Óscar (Nature, 2020)
    • Enhancement of Terbium(III)-Centered Luminescence by Tuning the Triplet Energy Level of Substituted ... 
      Manzur, Jorge; Poblete, Carolina; Morales, Jeannette; Costa de Santana, Ricardo; Queiroz Maia, Lauro June; Vega, Andrés; Fuentealba, Pablo; Spodine Spiridonova, Evgenia (American Chemical Society, 2020)
      A series of luminescent phenoxo-bridged dinuclear Tb-III complexes with tripodal ligands, 2,2'4 [(2-pyridinylmethyl)-imino]di(methylene)]-bis(4-R-phenol), where R = CH3 (L-CH3) (I), Cl (L-Cl) (II), CH3O (L-CH3O) (III), ...
    • Earthquakes Felt in the Juan Fernandez Islands: Where Are They Coming from? 
      Carrasco, Sebastián; Ruiz Tapia, Sergio; Sáez, Miguel (Seismological Society of America, 2020)
      The Juan Fernandez Islands (JFI) are located in the Pacific Ocean 675 km west of the Chilean coast. This archipelago has historically been affected by large tsunamis. Robinson Crusoe Island (RCI), the main island of the ...
    • Does ride-hailing increase or decrease vehicle kilometers traveled (VKT)? A simulation approach for Santiago ... 
      Tirachini Hernández, Alejandro; Gómez-Lobo Echeñique, Andrés (Taylor & Francis, 2020)
      Many authors have pointed out the importance of determining the impact of ride-hailing (ridesourcing) on vehicle kilometers traveled (VKT), and thus on transport externalities like congestion. However, to date there is ...
    • Black hole fueling and coalescence in galaxy mergers 
      Valle, Luciano del; Prieto, Joaquín; Escala Astorquiza, Andrés (Wiley, 2019)
      We study the gas accretion and orbital decay of super-massive black hole (SMBH) pairs in the nuclear region of galaxy merger remnants, where a large amount of gas is expected to accumulate. For that purpose, we perform ...
    • The VIRUS-P Exploration of Nearby Galaxies (VENGA): the stellar populations and assembly of NGC 2903’s ... 
      Carrillo, Andreia; Jogee, Shardha; Drory, Niv; Kaplan, Kyle; Blanc Mendiberri, Guillermo; Weinzirl, Tim; Song, Mimi; Luo, Rongxin (Oxford University Press, 2020)
      We study the stellar populations and assembly of the nearby spiral galaxy NGC 2903's bulge, bar, and outer disc using the VIRUS-P Exploration of Nearby Galaxies IFS survey. We observe NGC 2903 with a spatial resolution of ...
    • Shallow transit follow-up from next-generation transit survey: simultaneous observations of HD 106315 with ... 
      Smith, Alexis; Eigmüller, Philipp; Gurumoorthy, Ramanathan; Csizmadia, Szilárd; Bayliss, Daniel; Burleigh, Matthew R.; Cabrera, Juan; Casewell, Sarah; Erikson, Anders; Goad, Michael; Grange, Andrew; Jenkins, James Stewart; Pollacco, Don; Rauer, Heike; Raynard, Liam; Udry, Stéphane; West, Richard; Wheatley, Peter (Wiley, 2020)
      The Next Generation Transit Survey (NGTS) is a photometric survey for transiting exoplanets, consisting of 12 identical 0.2-m telescopes. We report a measurement of the transit of HD 106315 c using a novel observing mode ...
    • Anti-biofilm investigation of graphene/chitosan nanocomposites against biofilm producing P. aeruginosa and ... 
      Maruthupandy, Muthuchamy; Rajivgandhi, Govindan; Kadaikunnan, Shine; Veeramani, Thangasamy; Alharbi, Naiyf S.; Muneeswaran, Thillaichidambaram; Khaled, Jamal M.; Jun-Li, Wen; Alanzi, Khalid F. (Elsevier, 2020)
      In this study graphene/chitosan nanoparticles (GR/CS NCs) were developed. The homogenous combination of GR and CS was confirmed by FTIR spectroscopy. The combination of CS with GR sheets reduced the XRD intensity of the ...
    • A nodal integration scheme for meshfree Galerkin methods using the virtual element decomposition 
      Silva Valenzuela, R.; Ortiz Bernardin, Alejandro; Sukumar, N.; Artioli, E.; Hitschfeld Kahler, Nancy (Wiley, 2020)
      In this article, we present a novel nodal integration scheme for meshfree Galerkin methods, which draws on the mathematical framework of the virtual element method. We adopt linear maximum-entropy basis functions for the ...
    • A method for the reduction of the computational cost associated with the implementation of particle-filter-based ... 
      Rozas, Heraldo; Jaramillo, Francisco; Pérez, Aramis; Jiménez, Diego; Orchard Concha, Marcos; Medjaher, Kamal (Elsevier, 2020)
      Failure prognostic algorithms require to reduce the computational burden associated with their implementation to ensure real-time performance in embedded systems. In this regard, this paper presents a method that allows ...
    • A HARPS RV search for planets around young nearby stars 
      Grandjean, A.; Lagrange, A. M.; Keppler, M.; Meunier, N.; Mignon, L.; Borgniet, S.; Chauvin, G.; Desidera, S.; Galland, F.; Messina, S.; Sterzik, M.; Pantoja, B.; Rodet, L.; Zicher, N. (EDP Sciences, 2020)
      Context. Young nearby stars are good candidates in the search for planets with both radial velocity (RV) and direct imaging techniques. This, in turn, allows for the computation of the giant planet occurrence rates at all ...