Facultad de Ciencias Físicas y Matemáticas: Recent submissions

Now showing items 7921-7940 of 22295

    • Patterns of theory use in qualitative research in higher education studies in Latin America: a geopolitical ... 
      Guzmán Valenzuela, Carolina; Barnett, Ronald (Routledge, 2019)
      The relationship between theory and qualitative research has been extensively examined in the literature and has emerged as a problematic matter. This debate has been driven forward mainly in Anglo-Saxon countries and has ...
    • Fluid Distribution in the Central Andes Subduction Zone Imaged With Magnetotellurics 
      Araya Vargas, J.; Meqbel, N. M.; Ritter, O.; Brasse, H.; Weckmann, U.; Yáñez, G.; Godoy, B. (Blackwell Publishing Ltd, 2019)
      We present a model of the electrical resistivity structure of the lithosphere in the Central Andes between 20° and 24°S from 3-D inversion of 56 long-period magnetotelluric sites. Our model shows a complex resistivity ...
    • Evaluation of Neosaxitoxin as a local anesthetic during piglet castration: A potential alternative for Lidocaine 
      Valenzuela, Carolina; Torres, Cristian; Muñoz, Vanina; Simbaina, Juan Carlos; Sánchez, Andrella; Bustamante, Tamara; Sepúlveda, Joaquín M.; Piron, Robin; Del Campo, Miguel; Lagos, Néstor (Elsevier Ltd, 2019)
      Objetive: To evaluate Neosaxitoxin (NeoSTX) as a local anesthetic drug, for pain control during and after piglet castration. Study design: Prospective, randomized and double-blind study. Animals: 24 commercial hybrids, ...
    • Short chain fatty acids (SCFAs)mediated gut epithelial and immune regulation and its relevance for inflammatory ... 
      Venegas, Daniela Parada; De La Fuente, Marjorie K.; Landskron, Glauben; González, María Julieta; Quera, Rodrigo; Dijkstra, Gerard; Harmsen, Hermie J.M.; Faber, Klaas Nico; Hermoso, Marcela A. (Frontiers Media S.A., 2019)
      Ulcerative colitis (UC) and Crohn's disease (CD), collectively known as Inflammatory Bowel Diseases (IBD), are caused by a complex interplay between genetic, immunologic, microbial and environmental factors. Dysbiosis of ...
    • A control-function approach to correct for endogeneity in discrete choice models estimated on SP-off-RP ... 
      Guevara, C. Angelo; Hess, Stephane (Elsevier Ltd, 2019)
      It is common practice to build Stated Preference (SP) attributes and alternatives from observed Revealed Preference (RP) choices with a view to increasing realism. While many surveys pivot all alternatives around an observed ...
    • Assessing the ability of image based point clouds captured from a UAV to measure the terrain in the presence ... 
      Wallace, Luke; Bellman, Chris; Hally, Bryan; Hernandez, Jaime; Jones, Simon; Hillman, Samuel (MDPI AG, 2019)
      Point clouds captured from Unmanned Aerial Systems are increasingly relied upon to provide information describing the structure of forests. The quality of the information derived from these point clouds is dependent on a ...
    • Centennial-Scale SE Pacific Sea Surface Temperature Variability Over the Past 2,300 Years 
      Collins, James A.; Lamy, Frank; Kaiser, Jérôme; Ruggieri, Nicoletta; Henkel, Susann; De Pol-Holz, Ricardo; Garreaud Salazar, René; Arz, Helge W. (John Wiley and Sons Inc., 2019)
      Detailed temperature reconstructions over the past 2,000 years are important for contextualizing modern climate change. The midlatitude SE Pacific is a key region in this regard in terms of understanding the climatic ...
    • 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 ...
    • 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. ...
    • Spatial segregation of dust grains in transition disks : SPHERE observations of 2MASS J16083070-3828268 and ... 
      Villenave, M.; Benisty, Myriam; Dent, W. R.F.; Ménard, F.; Garufi, A.; Ginski, C.; Pinilla, P.; Pinte, C.; Williams, J. P.; De Boer, J.; Morino, J. I.; Fukagawa, M.; Dominik, C.; Flock, M.; Henning, T.; Juhász, A.; Keppler, M.; Muro-Arena, G.; Olofsson, J.; Pérez, L. M.; Van Der (EDP Sciences, 2019)
      Context. The mechanisms governing the opening of cavities in transition disks are not fully understood. Several processes have been proposed, but their occurrence rate is still unknown. Aims. We present spatially resolved ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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, ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...