Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 32461-32480 of 98418

    • Exploring the R CrA environment with SPHERE: Discovery of a new stellar companion 
      Mesa, D.; Bonnefoy, M.; Gratton, R.; Van Der Plas, G.; D'Orazi, V.; Sissa, E.; Zurlo, A.; Rigliaco, E.; Schmidt, T.; Langlois, M.; Vigan, A.; Ubeira Gabellini, M. G.; Desidera, S.; Antoniucci, S.; Barbieri, M.; Benisty, Myriam; Boccaletti, A.; Claudi, R.; Fedele, D.; Gasparri, (EDP Sciences, 2019)
      Aims. R Coronae Australis (R CrA) is the brightest star of the Coronet nebula of the Corona Australis (CrA) star forming region. This star is very red in color, probably due to dust absorption, and is strongly variable. ...
    • ALMA study of the HD 100453 AB system and the tidal interaction of the companion with the disk 
      Van Der Plas, G.; Ménard, F.; Gonzalez, J. F.; Perez, S.; Rodet, L.; Pinte, C.; Cieza, L.; Casassus Montero, Simón; Benisty, Myriam (EDP Sciences, 2019)
      Context. The complex system HD 100453 AB with a ring-like circumprimary disk and two spiral arms, one of which is pointing to the secondary, is a good laboratory in which to test spiral formation theories. Aims. We aim to ...
    • The protonation state of an evolutionarily conserved histidine modulates domainswapping stability of FoxP1 
      Medina, Exequiel; Villalobos, Pablo; Coñuecar, Ricardo; Ramírez-Sarmiento, César A.; Babul, Jorge (Nature Publishing Group, 2019)
      Forkhead box P (FoxP) proteins are members of the versatile Fox transcription factors, which control the timing and expression of multiple genes for eukaryotic cell homeostasis. Compared to other Fox proteins, they can ...
    • Laboratory exposure to Coccidioides: lessons learnt in a non-endemic country 
      Porte, L.; Valdivieso, F.; Wilmes, D.; Gaete, P.; Díaz, M. C.; Thompson, L.; Munita, J. M.; Alliende, R.; Varela, C.; Rickerts, V.; Weitzel, T. (W.B. Saunders Ltd, 2019)
      Coccidioides is a primary pathogenic fungus, which infects humans through highly infectious arthroconidia, causing substantial morbidity including life-threatening disseminated infections. Due to the low infectious dose, ...
    • Cordierite-bearing granitic rocks in South America: Contrasting sources and conditions of formation 
      Ferreira, V. P.; Sial, A. N.; Toselli, A. J.; de Toselli, J. R.; Molina, P. G.; Parada, M. A.; Celino, J. J.; Saavedra, J. (Elsevier Ltd, 2019)
      Mineralogy, geochemistry and isotopic data for Ediacaran, Ordovician to Devonian, and Upper Triassic cordierite-bearing granitoids respectively from Brazil, Argentina and Chile are discussed here. Syn-collisional Lower to ...
    • Images that matter: Social movements, discontent and neoliberalism in chilean documentaries after 2011 ... 
      Pinto, Iván (Universidad Andres Bello, 2019)
      This article analyses Chilean Documentaries released after 2011: El vals de los inútiles (Edison Cajas 2013), Ya no basta con marchar (Hernán Saavedra 2016), Tres instantes un grito (Cecilia Barriga 2013) Propaganda ...
    • Blobs, spiral arms, and a possible planet around HD 169142 
      Gratton, R.; Ligi, R.; Sissa, E.; Desidera, S.; Mesa, D.; Bonnefoy, M.; Chauvin, G.; Cheetham, A.; Feldt, M.; Lagrange, Anne Marie; Langlois, M.; Meyer, M.; Vigan, A.; Boccaletti, A.; Janson, M.; Lazzoni, C.; Zurlo, A.; De Boer, J.; Henning, T.; D'Orazi, V.; Gluck, L.; Madec, F. (EDP Sciences, 2019)
      Context. Young planets are expected to cause cavities, spirals, and kinematic perturbations in protostellar disks that may be used to infer their presence. However, a clear detection of still-forming planets embedded within ...
    • Environmental controls on silica sinter formation revealed by radiocarbon dating 
      Slagter, Silvina; Reich Morales, Martín; Muñoz Sáez, Carolina; Southon, John; Morata Céspedes, Diego; Barra, Fernando; Gong, Jian; Skok, J. R. (Geological Society of America, 2019)
      Silica sinter deposits overlying geothermal fields are reliable records of environmental, geochemical, and biological changes through time. Therefore, determining the absolute ages of formation of these deposits is fundamental ...
    • Without a body of evidence and peer review, taxonomic changes in liolaemidae and tropiduridae (Squamata) ... 
      Troncoso-Palacios, Jaime; de Gamboa, Margarita Ruiz; Langstroth, Roberto; Ortiz, Juan Carlos; Labra, Antonieta (Pensoft Publishers, 2019)
      In his recent self-published book "Reptiles en Chile", Diego Demangel Miranda presented 13 taxonomic changes for liolaemid and tropidurid lizards. While these could be considered validly published according to the International ...
    • Multiwavelength study of the G345.5+1.5 region 
      Figueira, M.; López Calderón, Cristian Marcelo; Bronfman Aguiló, Leonardo; Zavagno, A.; Hervías-Caimapo, Carlos; Duronea, N.; Nyman, L. A. (EDP Sciences, 2019)
      Context. The star formation process requires the dust and gas present in the Milky Way to self-assemble into dense reservoirs of neutral material where the new generation of stars will emerge. Star-forming regions are ...
    • Mo-doped CeO 2 Synthesized by the Combustion Method for Carbon-Air Solid Oxide Fuel Cell (CA-SOFC) Applications 
      Díaz-Aburto, I.; Gracia, F.; Colet-Lagrille, M. (John Wiley and Sons Ltd, 2019)
      Molybdenum(Mo)-doped ceria (CMO) nanoparticles were synthesized by the combustion method with three different Mo compositions: 5 wt.%, 7 wt.%, and 10 wt.%. The catalytic activity of CMO for wet gasification of carbon was ...
    • Downregulation of the Netrin-1 receptor UNC5B underlies increased placental angiogenesis in human gestational ... 
      Prieto, Catalina P.; Casas, Bárbara S.; Falcón, Paulina; Villanueva, Andrea; Lois, Pablo; Lattus, José; Palma, Verónica (MDPI AG, 2019)
      Gestational diabetes mellitus (GDM) is a common metabolic disorder, defined by high blood glucose levels during pregnancy, which affects foetal and post-natal development. However, the cellular and molecular mechanisms of ...
    • Abscisic acid (ABA) and low temperatures synergistically increase the expression of CBF/DREB1 transcription ... 
      Rubio, Sebastián; Noriega, Ximena; Pérez, Francisco J. (Oxford University Press, 2019)
      Background and Aims: It has been reported that low temperatures (LTs) and the plant hormone abscisic acid (ABA) induce the expression of CBF/DREB1 transcription factors in vegetative tissues and seedlings of Vitis vinifera ...
    • Building hot spots in different plasmonic nanoparticles from a cruciform bifunctional dipyridine anthracene 
      Imbarack, Elizabeth; Sánchez-González, Rodrigo; Soto, Juan Pablo; Leyton, Patricio; López-Tocón, Isabel; Soto, Juan; Sanchez-Cortes, Santiago; Otero, Juan Carlos; Campos-Vallette, Marcelo (John Wiley and Sons Ltd, 2019)
      In this work, the adsorption of a type of cruciform system integrated by an anthracene central part and two side chains with a pyridine-vinyl structure (DPAC) was studied on plasmonic nanoparticles of silver and gold. The ...
    • L-NIL prevents the ischemia and reperfusion injury involving TLR-4, GST, clusterin, and NFAT-5 in mice 
      Pasten, Consuelo; Alvarado, Cristóbal; Rocco, Jocelyn; Contreras, Luis; Aracena, Paula; Liberona, Jéssica; Suazo, Cristian; Michea Acevedo, Luis; Irarrázabal, Carlos E. (American Physiological Society, 2019)
      Copyright © 2019 the American Physiological Society.—On renal ischemia-reperfusion (I/R) injury, recruitment of neutrophils during the inflammatory process promotes local generation of oxygen and nitrogen reactive species, ...
    • Characterization of bone substitute β-TCP block for maxillofacial reconstruction Caracterización del bloque ... 
      Alister Herdener, Juan Pablo; Uribe, Francisca; Vásquez, Bélgica; Fariña, Rodrigo; Olate, Sergio (Universidad de la Frontera, 2019)
      The aim of this study was to characterize a commercial beta tricalcium phosphate (β-TCP) block allograft for use in maxillofacial reconstruction, evaluating its homogeneity, porosity and mineralization. Two commercial 5 x ...
    • Biological activity and chemical characterization of Pouteria lucuma seeds: A possible use of an agricultural waste 
      Guerrero-Castillo, Pedro; Reyes, Sarita; Robles, Juana; Simirgiotis, Mario J.; Sepulveda, Beatriz; Fernandez-Burgos, Ronald; Areche, Carlos (Elsevier Ltd, 2019)
      Pouteria lucuma fruit is widely used to prepare cakes, ice creams and juice or also commercialized as pulp and flour. As result of this business thousands of tons of seeds are generated as an agricultural waste. This study ...
    • Bogotá between Marcel Poëte and Le Corbusier. The city of Carlos Martínez Bogotá entre Marcel Poëte y Le ... 
      Arango-López, Diego (Universidad Nacional de Colombia, 2019)
      This article seeks to analyze Carlos Martinez's doctoral dissertation, Contribution à une étude d'urbanisation de Bogotá, Colombie. To do so, it proposes a critical reading of the document that incorporates its epistemological ...
    • Presidents versus foreign offices: The formulation of foreign policy in Brazil and Chile between 1990 and ... 
      Valenzuela, Pablo (Asociacion Espanola de Ciencia Politica y de la Administracion, 2019)
      The purpose of this article is to explain the different role and influence exercised by Brazil's and Chile's Foreign Offices (or Chancelleries) during the formulation and implementation of their foreign policy. To this ...
    • VEGF-A and VEGFR2 expression in chicken myocardium treated with acetylsalicylic acid (AAS) Expresión de ... 
      Sepúlveda, Francisco; Saavedra, Eduardo; Sánchez, Rodrigo; Córdova, Sebastián; Lemus, David; Fuenzalida, Marcela; Vergara, Marcela; Rosas C., Carlos (Universidad de la Frontera, 2019)
      The VEGF levels and its binding to its receptors are key stages in the regulation of angiogenesis. Acetylsalicylic acid (ASA), widely used in post-myocardial infarction treatment, has been shown to have an anti-angiogenic ...