Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 29181-29200 of 98435

    • Centros de color en diamante y nitruro de boro hexagonal: caracterización de la energía de la línea de fonón ... 
      Jara Donoso, César Andrés (Universidad de Chile, 2020-01)
      En esta tesis se han estudiado los centros de color NV−, NV0 y SiV− en el diamante, y el centro de color VN NB en el nitruro de boro hexagonal. Los c´alculos han sido realizados en el marco de la teor´ıa funcional de la ...
    • Gender differences in the prevalence of vitamin D deficiency in a southern Latin American country: a pilot study 
      Vallejo, M. S.; Blümel Méndez, Juan E.; Arteaga, E.; Aedo, S.; Tapia, V.; Araos, A.; Sciaraffia Merino, Carlos; Castelo Branco, Camil (Taylor & Francis, 2020)
      Aim: This study aimed to study the prevalence of vitamin D deficiency, assessing the influence of sex, age, and season of the year. Methods: A cross-sectional study was conducted with 1329 healthy subjects (668 women and ...
    • GDF-9 and BMP-15 mRNA levels in canine cumulus cells related to cumulus expansion and the maturation process 
      Ramírez, George; Palomino Mackenney, Jaime; Aspée Mallanes, Karla; Reyes Solovera, Mónica de los (MDPI, 2020)
      Simple Summary The knowledge of physiological events associated with canine reproduction involving oocyte developmental potential is essential to increase the success of reproductive biotechnologies in this species. In ...
    • Flexural electromechanical properties of multilayer graphene sheet/carbon nanotube/vinyl ester hybrid ... 
      Sierra Chi, Carlos A.; Aguilar Bolados, Héctor; López Manchado, M. A.; Verdejo, R.; Cauich Rodríguez, Juan Valerio; Aviles, F. (Elsevier, 2020)
      The electrical, mechanical and piezoresistive responses of vinyl ester nanocomposites made of two types of multilayer graphene sheets (GSs) and multiwall carbon nanotube hybrid fillers at different relative concentrations ...
    • Fitoquímicos: una nueva clase de prebióticos 
      Gasaly, Naschla; Riveros Cárcamo, Karla; Gotteland, Martín (Sociedad Chilena de Nutrición, Bromatología y Toxicología, 2020)
      La microbiota intestinal (MI) es considerada como un nuevo blanco para la prevención y manejo nutricional de las alteraciones inflamatorias y metabólicas asociadas a las enfermedades crónicas no-transmisibles. Los ...
    • Fast and compact planar embeddings 
      Ferres, Leo; Fuentes Sepúlveda, José; Gagie, Travis; He, Meng; Navarro, Gonzalo (Elsevier, 2020)
      There are many representations of planar graphs, but few are as elegant as Turan's (1984): it is simple and practical, uses only 4 bits per edge, can handle self-loops and multiedges, and can store any specified embedding. ...
    • Factors determining variation in colour morph frequencies in invasive Harmonia axyridis populations 
      Honek, Alois; Brown, Peter M. J.; Martinkova, Zdenka; Skuhrovec, Jiri; Brabec, Marek; Burgio, Giovanni; Evans, Edward W.; Fournier, Marc; Grez Villarroel, Audrey; Kulfan, Jan; Lami, Francesco; Lucas, Eric; Lumbierres, Belén; Masetti, Antonio; Mogilevich, Timofej; Orlova-Bienkowskaja, Marina; Phillips, William M.; Pons, Xavier; Strobach, Jan; Viglasova, Sandra; Zach, Peter; Zaviezo, Tania (Springer, 2020)
      The Harlequin ladybird Harmonia axyridis Pallas, native to eastern Asia, is an invasive, non-native species that has recently achieved an almost worldwide distribution. A conspicuous feature of this species is colour ...
    • Existence of omega-periodic solutions for a delayed chemostat with periodic inputs 
      Amster, Pablo; Robledo Veloso, Gonzálo; Sepúlveda, Daniel (Elsevier, 2020)
      This paper proposes an omega-periodic version of the Ellermeyer model of delayed chemostat. We obtain a sufficient condition ensuring the existence of a positive omega-periodic solution. Our proof is based on the application ...
    • Establishment and Stability of the Murine Oral Microbiome 
      Abusleme Ramos, Loreto Andrea; O'Gorman, H.; Dutzan Muñoz, Nicolás; Greenwell-Wild, T.; Moutsopoulos, N. M. (SAGE, 2020)
      Commensal microbiomes exert critical functions at barrier sites. In particular, establishment of the commensal microbiome after birth dictates immune functionality and tissue homeostasis at mucosal surfaces. To investigate ...
    • Entanglement entropy and the large N expansion of two-dimensional Yang-Mills theory 
      Donnelly, William; Timmerman, Sydney; Valdés Meller, Nicolás (Springer, 2020)
      Two-dimensional Yang-Mills theory is a useful model of an exactly solvable gauge theory with a string theory dual at large N. We calculate entanglement entropy in the 1/N expansion by mapping the theory to a system of N ...
    • Elección de Escuela en la Clase Alta Chilena. Comunidad, Identidad y Cierre Social 
      Bellei, Cristián; Orellana, Víctor; Canales Cerón, Manuel (Universidad Estatal de Arizona, 2020)
      Este artículo presenta los resultados de un estudio cuyo objetivo fue comprender las razones, motivos y significados asociados a la elección de escuela por parte de las familias de clase alta chilena. La elección de escuela ...
    • Efficacy of growth factors for the treatment of peri-implant diseases: a systematic review and meta-analysis 
      Khouly, Ismael; Pardinas López, Simón; Ruff, Ryan Richard; Strauss Avendaño, Franz Josef (Springer, 2020)
      Objectives The aim of this study was to conduct a systematic review and meta-analysis on the efficacy of growth factors (GF) on clinical outcomes after treatment (surgical/non-surgical) of peri-implant diseases (peri-implant ...
    • Usefulness of high-resolution ultrasound in the management of facial inflammatory dermatoses 
      Vargas Mora, Pablo; Morgado Carrasco, Daniel; Giavedoni, Priscila (Wiley, 2020)
    • Vagueness in multidimensional proposals 
      Zhang, Qiaoxi (Elsevier, 2020)
      This paper studies how agents choose to be vague in their proposals in a delegation environment. Two agents compete for the approval of a decision maker to implement a multidimensional action. Based on their knowledge of ...
    • Understanding the structure of school staff advice relations: an inferential social network perspective 
      Ortega Ferrand, Lorena; Boda, Zsófia; Thompson, Ian; Daniels, Harry (Elsevier, 2020)
      Understanding the structure of staff advice relationships and the factors that facilitate (and hinder) the flow of resources within schools is key to school improvement. Our study examines school staff advice networks for ...
    • Ultrasound morphologic features of steatocystoma multiplex with clinical correlation 
      Arceu, Montserrat; Martínez, Guisella; Alfaro, Daniela; Wortsman Canovas, Ximena (Wiley, 2020)
      The ultrasound features of 87 steatocytoma multiplex (SCM) lesions detected in 9 patients are reported. Steatocytoma multiplex is a hamartomatous condition derived from the pilosebaceous duct junction that generates multiple ...
    • Ultrasonic-assisted sol-gel synthesis of TiO2 nanostructures: influence of synthesis parameters on morphology, ... 
      Quintero, Y.; Mosquera, E.; Diosa, J.; Garcia, A. (Springer, 2020)
      The influence of synthesis parameters using the ultrasonic-assisted sol-gel method on the properties of TiO2 nanostructures was studied. Different synthesis conditions such as long stirring time, type of acid used as the ...
    • Trends and emissions of six perfluorocarbons in the Northern Hemisphere and Southern Hemisphere 
      Droste, Elise S.; Adcock, Karina E.; Ashfold, Matthew J.; Chou, Charles; Fleming, Zoë; Fraser, Paul J.; Gooch, Lauren J.; Hind, Andrew J.; Langenfelds, Ray L.; Leedham Elvidge, Emma; Mohd Hanif, Norfazrin; O’Doherty, Simon; Oram, David E.; Ou Yang, Chang Feng; Panagi, Marios; Reeves, Claire E.; Sturges, William T.; Laube, Johannes C. (Copernicus Gesellschaft, 2020)
      Perfluorocarbons (PFCs) are potent greenhouse gases with global warming potentials up to several thousand times greater than CO2 on a 100-year time horizon. The lack of any significant sinks for PFCs means that they have ...
    • Corrigendum: Transduction as a potential dissemination mechanism of a clonal qnrb19-carrying plasmid isolated ... 
      Moreno-Switt, Andrea I.; Pezoa, David; Sepúlveda, Vanessa; González, Iván; Rivera, Dácil; Retamal Merino, Patricio; Navarrete Wallace, Paola; Reyes Jara, Angélica; Toro Ibaceta, Magaly (Frontiers Media, 2020)
    • The IPBES Global Assessment: pathways to Action 
      Ruckelshaus, Mary H.; Jackson, Stephen T.; Mooney, Harold A.; Jacobs, Katharine L.; Kassam, Karim-Aly S.; Arroyo, Mary T. K.; Báldi, András; Bartuska, Ann M.; Boyd, James; Joppa, Lucas N.; Kovács Hostyánszki, Anikó; Petraglia Parsons, Jill; Scholes, Robert J.; Shogren, Jason F.; Ouyang, Zhiyun (Elsevier, 2020)
      The first Global Assessment of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) found widespread, accelerating declines in Earth's biodiversity and associated benefits to people ...