Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 44941-44960 of 99083

    • Mutations on FtsZ lateral helix H3 that disrupt cell viability hamper reorganization of polymers on lipid surfaces 
      Márquez, Ileana F.; Mateos-Gil, Pablo; Shin, Jae Yen; Lagos Mónaco, Rosalba; Monasterio Opazo, Octavio; Vélez, Marisela (Elsevier B.V., 2017)
      © 2017 Elsevier B.V. FtsZ filaments localize at the middle of the bacterial cell and participate in the formation of a contractile ring responsible for cell division. Previous studies demonstrated that the highly conserved ...
    • Persistence of Dromiciops gliroides in landscapes dominated by Pinus radiata plantations 
      Uribe, Sandra V.; Chiappe, Romina; Estades Marfán, Cristián (Sociedad de Biologia de Chile, 2017)
      © The Author(s). 2017. Background: Monitos del monte (Dromiciops gliroides) are old-growth forest specialists and, thus, believed to be very sensitive to habitat transformation, although some recent studies show some level ...
    • Size matters: point pattern analysis biases the estimation of spatial properties of stomata distribution 
      Naulin, Paulette I.; Valenzuela, Gerardo; Estay, Sergio A. (Blackwell Publishing Ltd, 2017)
      © 2016 The Authors. New Phytologist © 2016 New Phytologist Trust Stomata distribution is an example of biological patterning. Formal methods used to study stomata patterning are generally based on point-pattern analysis, ...
    • Enhanced dielectric properties of PVDF/CaCu3Ti4O12:Ag composite films 
      Ghosh, B.; Tamayo Calderón, Rocío María; Espinoza-González, R.; Hevia, Samuel A. (Elsevier Ltd, 2017)
      © 2017 Elsevier B.V. Studies on free standing flexible composite films of Polyvinylidene fluoride (PVDF) incorporated with CaCu3Ti4O12 (CCTO) functionalized by silver (Ag) nanoparticles (PVDF/CCTO:Ag) are presented here. ...
    • ABA represses the expression of cell cycle genes and may modulate the development of endodormancy in grapevine buds 
      Vergara, Ricardo; Noriega, Ximena; Aravena, Karla; Prieto, Humberto; Pérez, Francisco J. (Frontiers Media S.A., 2017)
      © 2017 Vergara, Noriega, Aravena, Prieto and Pérez. Recently, the plant hormone abscisic acid (ABA) has been implicated as a key player in the regulation of endodormancy (ED) in grapevine buds (Vitis vinifera L). In this ...
    • Heterocyclic Aromatics in Petroleum Coke, Snow, Lake Sediments, and Air Samples from the Athabasca Oil Sands Region 
      Manzano, Carlos A.; Marvin, Chris; Muir, Derek; Harner, Tom; Martin, Jonathan; Zhang, Yifeng (American Chemical Society, 2017)
      © 2017 American Chemical Society.The aromatic fractions of snow, lake sediment, and air samples collected during 2011-2014 in the Athabasca oil sands region were analyzed using two-dimensional gas chromatography following ...
    • Structural, Electronic, and Thermodynamic Properties of the T and B Phases of Niobia: First-Principle Calculations 
      Pinto, Mirele B.; Soares, Antonio Lenito; Mella Orellana, Andy; Duarte, Hélio A.; De Abreu, Heitor A. (American Chemical Society, 2017)
      © 2017 American Chemical Society. Different polymorphs of Nb2O5 can be obtained depending on the pressure and temperature of calcination leading to different catalytic properties. Two polymorphs of niobia, T-Nb2O5 and ...
    • Two new hygroline and tropane alkaloids isolated from schizanthus hookeri and S. tricolor (Solanaceae) 
      Cretton, Sylvian; Muñoz Muñoz, Orlando; Tapia, Jorge; Marcourt, Laurence; Maes, Louis; Christen, Philippe (Natural Product Incorporation, 2017)
      Two new hygroline and tropane alkaloids, 4-hydroxybenzenepropanoylhygroline (1) and 3α,4β-dihydroxy-6β-angeloyoxytropane (2) have been isolated from the aerial parts of Schizanthus hookeri and S. tricolor, respectively, ...
    • The biosynthetic gene cluster for andrastin A in Penicillium roqueforti 
      Rojas Aedo, Juan F.; Gil Durán, Carlos; Del-Cid, Abdiel; Valdés, Natalia; Álamos, Pamela; Vaca Cerezo, Inmaculada; García Rico, Ramón O.; Levicán, Gloria; Tello, Mario; Chávez, Renato (Frontiers Research Foundation, 2017)
      © 2017 Rojas-Aedo, Gil-Durán, Del-Cid, Valdés, álamos, Vaca, García-Rico, Levicán, Tello and Chávez. Penicillium roqueforti is a filamentous fungus involved in the ripening of several kinds of blue cheeses. In addition, ...
    • Prion function and pathophysiology in non-mammalian models 
      Guerrero, N.; Meynard, M. M.; Borgonovo, J.; Palma, K.; Concha Nordemann, Miguel; Hetz Flores, Claudio (Bentham Science Publishers B.V., 2017)
      © 2017 Bentham Science Publishers. More than thirty years have passed since the discovery of the prion protein (PrP) and its causative role in transmissible spongiform encephalopathy. Since a combination of both gain- and ...
    • The awakening of pisco in Chile El amanecer del pisco en Chile 
      Lacoste, Pablo; Jiménez, Diego; Aguilera, Paulette; Rendón, Bibiana; Castro, Amalia; Soto, Natalia (Pontificia Universidad Catolica de Chile, Facultad de Agronomia e Ingenieria Forestal, 2014)
      This paper analyzes the historical antecedents of pisco (grape brandy) in Chile from unpublished original documents of the Archivo Nacional (National Archives) from the end of the 17th century to the beginning of the 18th ...
    • RyR2-mediated Ca2+ release and mitochondrial ROS generation partake in the synaptic dysfunction caused by ... 
      San Martín Rovirosa, Carol; Veloso, Pablo; Adasme, Tatiana; Lobos, Pedro; Bruna, Barbara; Galaz, Jose; García, Alejandra; Hartel, Steffen; Hidalgo Tapia, María Cecilia; Paula Lima, Andrea (Frontiers Research Foundation, 2017)
      © 2017 SanMartín, Veloso, Adasme, Lobos, Bruna, Galaz, García, Hartel, Hidalgo and Paula-Lima. Amyloid β peptide oligomers (AβOs), toxic aggregates with pivotal roles in Alzheimer’s disease, trigger persistent and low ...
    • Coalescing red algae exhibit noninvasive, reversible chimerism 
      Santelices, Bernabé; González, Alejandra V.; Beltrán, Jessica; Flores, Verónica (Blackwell Publishing Inc., 2017)
      © 2016 Phycological Society of America Chimerism is produced by the somatic fusion of two or more genetically distinct conspecific individuals. In animals, the main cost of fusion is competition between genetically different ...
    • Utility of five SSR markers for genetic diversity and paternity exclusion analysis in the patagonian toothfish 
      Araneda, Cristian; Lam, Natalia; Iturra, Patricia; Jilberto, Felipe; Cordova, Valentina; Villarroel Gallardo, Pablo Antonio (Escuela de Ciencias del Mar, 2017)
      © 2017, Escuela de Ciencias del Mar. All Right Reserved.The Patagonian toothfish or Chilean sea bass (Dissostichus eleginoides), found in the Southern Ocean surrounding Antarctica, is an important fishery species for Chile. ...
    • The Polyphenol Altenusin Inhibits in Vitro Fibrillization of Tau and Reduces Induced Tau Pathology in Primary ... 
      Chua, Sook Wern; Cornejo, Alberto; Van Eersel, Janet; Stevens, Claire H.; Vaca Cerezo, Inmaculada; Cueto, Mercedes; Kassiou, Michael; Gladbach, Amadeus; Macmillan, Alex; Lewis, Lev; Whan, Renee; Ittner, Lars M. (American Chemical Society, 2017)
      In Alzheimer’s disease, the microtubule-associated protein tau forms intracellular neurofibrillary tangles (NFTs). A critical step in the formation of NFTs is the conversion of soluble tau into insoluble filaments. ...
    • The taxonomic status of two Telmatobius frog species (Anura: Telmatobiidae) from the western Andean slopes ... 
      Fibla, Pablo; Sáez, Paola A.; Salinas, Hugo; Araya, Carolina; Sallaberry Ayerza, Michel; Méndez, Marco (Magnolia Press, 2017)
      Copyright © 2017 Magnolia Press. On the basis of molecular and morphological evidence, we evaluated the taxonomic identity of two species of Andean frogs of the genus Telmatobius: Telmatobius pefauri and T. zapahuirensis, ...
    • X-ray computed tomography reveals that intraspecific competition promotes soldier differentiation in a ... 
      Aguilera-Olivares, Daniel; Palma-Onetto, Valeria; Flores-Prado, Luis; Zapata, Víctor; Niemeyer, Hermann M. (Blackwell Publishing Ltd, 2017)
      © 2017 The Netherlands Entomological Society Investment in soldier production in eusocial lineages involves a trade-off between maintenance costs and defense benefits. Termites are eusocial insects that live in colonies ...
    • Pesticide increases transgenerational cost of inducible defenses in a freshwater rotifer 
      Heine-Fuster, Inger; Aránguiz-Acuña, Adriana; Ramos Jiliberto, Rodrigo (Springer International Publishing, 2017)
      © 2017, Springer International Publishing Switzerland. In addition to natural stressors such as predation risk, aquatic organisms receive the simultaneous impact of anthropogenic stressors like pollution. In order to advance ...
    • Palmitic acid and hexadecylamine molecules assdsorbed on titania surface in hybrid composites. Effect of ... 
      Orellana, Carlos; Mendizábal Emaldía, Fernando; González Moraga, Guillermo; Miranda Rojas, Sebastián; Barrientos Poblete, Lorena (Elsevier B.V., 2017)
      © 2017 Elsevier B.V.A complete theoretical characterization of the factors involved in the stabilization of hybrid laminar composites is reported, with the purpose of understanding the main interactions involved in the ...
    • Functional roles of T3.37 and S5.46 in the activation mechanism of the dopamine D1 receptor 
      Hugo, Estefanía A.; Cassels Niven, Bruce; Fierro, Angélica (Springer Verlag, 2017)
      © 2017, Springer-Verlag Berlin Heidelberg. The activation mechanism of dopamine receptors is unknown. The amino acids S5.42, S5.43, and S5.46 located in helix 5 appear to be crucial, but their specific roles in receptor ...