Browsing by Title Facultad de Ciencias Físicas y Matemáticas

Now showing items 10453-10472 of 20545

    • THE HIGH-METALLICITY EXPLOSION ENVIRONMENT OF THE RELATIVISTIC SUPERNOVA 2009BB1 
      Levesque, Emily M.; Soderberg, M.; Foley, Ryan J.; Berger, E.; Kewley, Lisa; Chakraborti, S.; Ray, Aurkie; Torres, M. A. P.; Challis, P.; Kirshner, Robert P.; Barthelmy, S. D.; Bietenholz, M. F.; Chandra, P.; Chaplin, V.; Chevalier, R. A.; Chugai, N.; Connaughton, V.; Copete, A.; Fox, O.; Fransson, C.; Grindlay, J. E.; Hamuy Wackenhut, Mario; Milne, P. A.; Pignata Libralato, Giuliano; Stritzinger, M. D.; Wieringa, M. H. (2009-12)
      We investigate the environment of the nearby (d 40 Mpc) broad-lined Type Ic supernova SN 2009bb. This event was observed to produce a relativistic outflow likely powered by a central ac- creting compact object. While ...
    • High-redshift x-ray–selected quasars: CXOCY J125304.0_090737 joins the club 
      Castander, Francisco J.; Treister, Ezequiel; Maccarone, Thomas J.; Coppi, Paolo S.; Maza Sancho, José; Zepf, Septenio E.; Guzmán, Rafael (2003-04)
      We present a new X-ray–selected high-redshift quasar CXOCY J125304.0 090737 at z = 4.179, discovered by the Cala´n-Yale Deep Extragalactic Research (CYDER) Survey. This quasar is the fifth X-ray– selected high-redshift ...
    • High-resolution observations of the outer disk around T Chamaeleontis: the view from ALMA 
      Huélamo, N.; De Gregorio Monsalvo, Itziar; Macias, E.; Pinte, Christophe; Ireland, M.; Tuthill, P.; Lacour, S. (EDP Sciences, 2015)
      Context. Transitional disks are circumstellar disks with dust gaps thought to be related in some cases to planet formation. They can shed light on the planet formation process by the analysis of their gas and dust properties. ...
    • High-resolution spatial-distribution maps of road transport exhaust emissions in Chile, 1990–2020 
      Osses, Mauricio; Rojas, Néstor; Ibarra, Cecilia; Valdebenito, Víctor; Laengle, Ignacio; Pantoja, Nicolás; Osses, Darío; Basoa, Kevin; Tolvett, Sebastián; Huneeus Lagos, Nicolás; Gallardo Klenner, Laura; Gómez, Benjamín (Copernicus, 2022)
      Center for Climate and Resilience Research (FONDAP) 15110009 Technological Scientific Center of Valparaiso (ANID PIA/APOYO) AFB180002 EU project Prediction of Air Pollution in Latin America and the Caribbean (PAPILA) 777544
    • High-resolution spectroscopic search for the thermal emission of the extrasolar planet HD 217107 b 
      Cubillos, P. E.; Rojo, P.; Fortney, J. J. (EDP SCIENCES, 2011-05)
      We analyzed the combined near-infrared spectrum of a star-planet system with thermal emission atmospheric models, based on the composition and physical parameters of the system. The main objective of this work is to obtain ...
    • High-temperature phonon-mediated superconductivity in monolayer Mg2B4C2 
      Singh, Sobhit; Romero, Aldo H.; Mella Riquelme, José; Eremeev, Vitalie; Muñoz, Enrique; Alexandrova, Anastassia N.; Rabe, Karin M.; Vanderbilt, David; Muñoz Sáez, Francisco Javier (Nature, 2022)
      A two-dimensional material - Mg2B4C2, belonging to the family of the conventional superconductor MgB2, is theoretically predicted to exhibit superconductivity with critical temperature T-c estimated in the 47-48 K range ...
    • Higher luteinizing hormone levels associated with antimüllerian hormone in postmenarchal daughters of women ... 
      Crisosto King, Nicolás; Ladrón de Guevara, Amanda; Echiburú López, Bárbara; Maliqueo Yevilao, Manuel; Cavada, Gabriel; Codner Dujovne, Ethel; Paez, Francisco; Sir Petermann, Teresa (Elsevier Inc., 2019)
      © 2018 American Society for Reproductive MedicineObjective: To study the reproductive and metabolic differences between daughters of women with polycystic ovary syndrome (PCOSd) and control women (Cd) after menarche. Design: ...
    • Higher-order spectral analysis and weak asymptotic stability of convex processes 
      Gajardo, Pedro; Seeger, Alberto (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2006-06-01)
      This paper deals with the asymptotic stability analysis of a discrete dynamical inclusion whose right-hand side is a convex process. We provide necessary and sufficient conditions for weak asymptotic stability, and obtain ...
    • Highly active Rb/Cu/YCeO2 catalyst for the storage of nitric oxide under lean conditions 
      Bormann, Carla; Rodriguez, Nicole; Araya, Paulo; Guerrero, Sichem (ELSEVIER SCIENCE BV, 2016)
      A novel Pt-free Rb/Cu/YCeO2 catalyst was applied to the adsorption of NO under oxidizing conditions. The results show a much greater performance of this catalyst relative to a Pt/Ba/Al2O3 catalyst. The results suggest that ...
    • Highly active Rb/Cu/YCeO2 catalyst for the storage of nitric oxide under lean conditions 
      Bormann, Carla; Rodriguez, Nicole; Araya, Paulo; Guerrero, Sichem (ELSEVIER SCIENCE BV, 2016)
      A novel Pt-free Rb/Cu/YCeO2 catalyst was applied to the adsorption of NO under oxidizing conditions. The results show a much greater performance of this catalyst relative to a Pt/Ba/Al2O3 catalyst. The results suggest that ...
    • 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 ...
    • Highly emissive host-guest based on nanoclay intercalated with an Eu3+ complex bearing a new Ru2+ organometallic ... 
      Celedón, Salvador; De Camargo, Andréa; Fuentealba, Mauricio; Artigas, Vania; Benavente, Eglantina; González Moraga, Guillermo (Royal Society of Chemistry, 2018)
      This work describes the design, synthesis and physicochemical properties of the highly emissive nanocomposite [bentonite][Eu{(η5-Cp*)Ru(η6-bzac)}3Phen]0.09[H2O]0.22 based on the Eu(III) complex [Eu{(η5-Cp*)Ru(η6-bzac)}3P ...
    • Highly siderophile elements mobility in the subcontinental lithospheric mantle beneath southern Patagonia 
      Tassara, Santiago; González Jiménez, José M.; Reich Morales, Martín; Saunders, Edward; Luguet, Ambre; Morata Céspedes, Diego; Grégoire, Michel; van Acken, David; Schilling, Manuel E.; Barra Pantoja, Luis; Nowell, Geoff; Corgne, Alexandre (Elsevier, 2018)
      Peridotite xenoliths collected from alkali basalts in the Argentinian Patagonia reveal the existence of an ancient depleted Paleoproterozoic mantle that records a subsequentmultistage metasomatic history.Metasomatismis ...
    • Highway franchising and real estate values 
      Engel Goetz, Eduardo; Fischer Barkan, Ronald; Galetovic Potsch, Alexander (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2005-05)
      It has become increasingly common worldwide to auction the construction and operation of new highways to the bidder that charges the lowest toll. The resulting highway franchises often entail large increases in the value ...
    • High‑strength reinforcing steel bars: low cycle fatigue behavior using RGB methodology 
      Egger, Jorge E.; Rojas Barrales, Fabián Rodolfo; Massone Sánchez, Leonardo Maximiliano (Springer, 2021)
      Low cycle fatigue life of high-strength reinforcing steel bars (ASTM A706 Grade 80), using photogrammetry by RGB methodology is evaluated. Fatigue tests are performed on specimens under constant axial displacement with ...
    • Hint of curvature in the orbital motion of the exoplanet 51 Eridani b using 3 yr of VLT/SPHERE monitoring 
      Maire, A. L.; Rodet, L.; Cantalloube, F.; Galicher, R.; Brandner, W.; Messina, S.; Lazzoni, C.; Mesa, D.; Melnick, D.; Carson, J.; Samland, M.; Biller, B. A.; Boccaletti, A.; Wahhaj, Z.; Beust, H.; Bonnefoy, M.; Chauvin, G.; Desidera, S.; Langlois, M.; Henning, T.; Janson, M (EDP Sciences, 2019)
      Context. The 51 Eridani system harbors a complex architecture with its primary star forming a hierarchical system with the binary GJ 3305AB at a projected separation of 2000 au, a giant planet orbiting the primary star at ...
    • Historias laborales y seguridad económica en la vejez: el caso México y Chile 
      Rubalcava Montero, Daniel (Universidad de Chile, 2019)
      justicia social, solidaridad intergeneracional, responsabilidad financiera y sobre todo un profundo compromiso por alcanzar el bien común. Las historias laborales de las personas son una alternativa para conocer la ...
    • Historical and recent large megathrust earthquakes in Chile 
      Ruiz Tapia, Sergio; Madariaga, R. (Elsevier, 2018-05)
      Recent earthquakes in Chile, 2014, Mw 8.2 Iquique, 2015, Mw 8.3 Illapel and 2016, Mw 7.6 Chiloe have put in evidence some problems with the straightforward application of ideas about seismic gaps, earthquake periodicity ...
    • Historical seismicity in oceans from sailors' testimonies 
      Rouland, Daniel; Legrand, Denis; Cisternas, Armando; Streng, Daniel; Gir, Roopa; Souriau, Annie (Springer, 2016)
      Before seismological catalogs were routinely produced, seafarers experienced major seismic events at sea that were documented in their logs. This article analyzes some of these old records-mostly from eighteenth and ...
    • HIV Treatment in Resource-Limited Environments: Treatment Coverage and Insights 
      Khademi, Amin; Sauré Valenzuela, Denis; Schaefer, Andrew; Nucifora, Kimberly; Braithwaite, Scott; Roberts, Mark S. (Elsevier, 2015)
      Background: The effects of antiretroviral treatment on the HIV epidemic are complex. HIV-infected individuals survive longer with treatment, but are less likely to transmit the disease. The standard coverage measure improves ...