Browsing by Title Facultad de Ciencias Físicas y Matemáticas

Now showing items 20017-20036 of 20505

    • An unusual two-dimensional hydrogen-bonding network in bis(2,9-dimethyl-1,10-phenanthrolin-1-ium) peroxodisulfate ... 
      Harvey, Miguel Angel; Baggio, Sergio; Garland, María Teresa; Baggio, Ricardo (BLACKWELL PUBLISHING, 2008-09)
      The title compound, 2C(14)H(13)N(2)(+)center dot S2O82-center dot 2H(2)O, is a protonated amine salt which is formed from two rather uncommon ionic species, namely a peroxodisulfate (pds(2-)) anion, which lies across a ...
    • Unveiling the beta pictoris system, coupling high contrast imaging, interferometric, and radial velocity data 
      Lagrange, A. M; Rubini, P.; Nowak, M.; Lacour, S.; Grandjean, A.; Boccaletti, A.; Langlois, M.; Delorme, P.; Gratton, R.; Wang, J.; Flasseur, O.; Galicher, R.; Kral, Q.; Meunier, N.; Beust, H.; Babusiaux, C.; Le Coroller, H.; Thebault, P.; Kervella, P.; Zurlo, A.; Maire, A.-L.; Wahhaj, Z.; Amorim, A.; Asensio-Torres, Rubén; Benisty, M.; Berger, J.-P.; Bonnefoy, M.; Brandner, W.; Cantalloube, F.; Charnay, B.; Chauvin, G.; Choquet, É.; Clenet, Y.; Christiaens, V.; Coude du Foresto, V.; de Zeeuw, P.T.; Desidera, S.; Duvert, G.; Eckart, A.; Eisenhauer, F.; Galland, F.; Gao, F.; Garcia, P.; García López, R.; Gendron, E.; Genzel, R.; Gillessen, S.; Girard, J.; Hagelberg, J.; Haubois, X.; Henning, T.; Heissel, G.; Hippler, S.; Horrobin, M.; Janson, M.; Kammerer, J.; Kenworthy, M.; Keppler, M.; Kreidberg, L.; Lapeyrere, V.; Le Bouquin, J.-B.; Lena, P.; Merand, A.; Messina, S.; Molliere, P.; Monnier, J. D.; Ott, T.; Otten, G.; Paumard, T.; Paladini, C.; Perraut, K.; Perrin, G.; Pueyo, L.; Pfuhl, O.; Rodet, L.; Rodríguez Coira, G.; Rousset, G.; Samland, M.; Shangguan, J.; Schmidt, T.; Straub, O.; Straubmeier, C.; Stolker, T.; Vigan, A.; Vincent, F.; Widmann, F.; Woillez, J. (EDP Science, 2020)
      Context. The nearby and young beta Pictoris system hosts a well resolved disk, a directly imaged massive giant planet orbiting at similar or equal to 9 au, as well as an inner planet orbiting at similar or equal to 2.7 au, ...
    • Unveiling the gas-and-dust disk structure in HD 163296 using ALMA observations 
      De Gregorio Monsalvo, Itziar; Ménard, Francois; Dent, W.; Pinte, Christophe; López Saavedra, Celso; Klaassen, C.; Hales, A.; Cortés, P.; Rawlings, M. G.; Tachihara, K.; Testi, L.; Takahashi, S.; Chapillon, E.; Mathews, G.; Juhasz, A.; Akiyama, E.; Higuchi, Aya; Saito, M.; Nyman, L. A.; Phillips, N.; Rodón, J.; Corder, S.; Van Kempen, T. (EDP Sciences, 2013)
      Aims. The aim of this work is to study the structure of the protoplanetary disk surrounding the Herbig Ae star HD 163296. Methods. We used high-resolution and high-sensitivity ALMA observations of the CO(3–2) emission ...
    • Unveiling the role of galactic rotation on star formation 
      Utreras Contreras, José; Becerra, Fernando; Escala Astorquiza, Andrés (The American Astronomical Society, 2016-11-10)
      We study the star formation process at galactic scales and the role of rotation through numerical simulations of spiral and starburst galaxies using the adaptive mesh refinement code Enzo. We focus on the study of three ...
    • Update in the treatment of atopic dermatitis Actualización en el tratamiento de la dermatitis atópica 
      Valenzuela Ahumada, Fernando; Yumha Laiz, Jacob (Ediciones Doyma, S.L., 2019)
    • Updating dynamic noise models with moving magnetoencephalographic (MEG) systems 
      Lopez, Jose David; Tierney, Tim M.; Sucerquia, Angela; Valencia, Felipe; Holmes, Niall; Mellor, Stephanie; Roberts, Gillian; Hill, Ryan M.; Bowtell, Richard; Brookes, Matthew J.; Barnes, Gareth R. (Institute of Electrical and Electronics Engineers Inc., 2019)
      Optically pumped magnetometers have opened many possibilities for the study of human brain function using wearable moveable technology. In order to fully exploit this capability, a stable low-field environment at the sensors ...
    • Upgrading name server credibility: Un breve análisis a los dominios de la zona .cl 
      Marambio Quiroz, Nelson David (Universidad de Chile, 2023)
      El sistema de nombres de dominio permite la traducción de nombres a direcciones IP s. Un componente primordial en él es el resolver, el cual se encarga de entregar la información deseada al usuario. Hoy en día, existen dos ...
    • Uplink transmission policies for lora-based Direct-to-Satellite Iot 
      Álvarez, Guido; Fraire, Juan Andrés; Abdelfadeel Hassan, Khaled; Céspedes Umaña, Sandra Lorena; Pesch, Dirk (IEEE-Inst Electrical Electronics Engineers, 2022)
      Direct-to-Satellite IoT (DtS-IoT) is a promising approach to deliver data transfer services to IoT devices in remote areas where deploying terrestrial infrastructure is not appealing or feasible. In this context, low-Earth ...
    • Upper Cambrian carbonate sequences of the Argentine Precordillera and the Steptoean C-Isotope positive ... 
      Sial, A. N.; Peralta, S.; Ferreira, Viviana; Toselli, A. J.; Aceñolaza, F. G.; Parada Reyes, Miguel; Gaucher, C.; Alonso, R. N.; Pimentel, M. M. (ELSEVIER SCIENCE BV, 2008-07)
      Carbon and Sr-isotope profiles in Upper Cambrian platformal carbonate Formations in the Precordillera, western Argentina (Zonda, La Flecha and La Silla Formations), were constructed for three representative sections: (a) ...
    • Upper crustal differentiation processes and their role in 238U-230Th disequilibria at the San Pedro-Linzor ... 
      Godoy, Benigno; McGee, Lucy; González Maurel, Osvaldo; Rodríguez, Inés; Roux, Petrus le; Morata Céspedes, Diego; Menzies, Andrew (Elsevier, 2020)
      U-series data are combined with major and trace element constraints to construct a detailed view of the magmatic system feeding the San Pedro-Linzor volcanic chain, aiding the understanding of how stratovolcanoes in extremely ...
    • An upper limit on anomalous dust emission at 31 GHz in the diffuse cloud [LPH96] 201.663+1.643 
      Dickinson, C.; Casassus Montero, Simón; Pineda, J. L.; Pearson, T. J.; Readhead, A. C. S.; Davies, R. D. (UNIV CHICAGO PRESS, 2006-06-01)
      [ LPH96] 201.663 + 1.643, a diffuse H II region, has been reported to be a candidate for emission from rapidly spinning dust grains. We present Cosmic Background Imager (CBI) observations at 26 - 36 GHz that show no evidence ...
    • Upper limits for mass and radius of objects around proxima cen from SPHERE/VLT 
      Mesa, D.; Zurlo, A.; Milli, J.; Gratton, R.; Avenhaus, H. (Oxford University Press, 2017)
      The recent discovery of an earth-like planet around Proxima Centauri has drawn much attention to this star and its environment. We performed a series of observations of Proxima Centauri using Spectro-Polarimetric High-contrast ...
    • Upper-Body Exercises With External Resistance Are Well Tolerated and Enhance Muscle Activity in People With ... 
      Calatayud, Joaquín; Pérez Alenda, Sofía; Carrasco, Juan J.; Escriche, Adrián; Cruz Montecinos, Carlos Vicente; Andersen, Lars L.; Bonanad, Santiago; Querol, Felipe; Casaña, José (Oxford University Press, 2019)
      Background Conventional nonresisted therapeutic exercises for people with hemophilia involve a careful, low-intensity approach to avoid injuries. Externally resisted exercise is highly efficient for increasing muscle ...
    • Urban mobility analysis with mobile network data: a visual analytics approach 
      Senaratne, Hansi; Mueller, Manuel; Behrisch, Michael; Lalanne, Felipe; Bustos Jiménez, Javier; Schneidewind, Joern; Keim, Daniel; Schreck, Tobias (IEEE, 2018-05)
      Urban planning and intelligent transportation management are facing key challenges in today's ever more urbanized world. Providing the right tools to city planners is crucial to cope with these challenges. Data collected ...
    • ¿Urbanización fallada? La Falla San Ramón como nuevo escenario de riesgo sísmico y la sostenibilidad de ... 
      Vargas Easton, Víctor; Inzulza Contardo, Jorge; Pérez Tello, Sonia; Ejsmentewicz Cáceres, Daniela; Jiménez Yáñez, Catalina (Universidad de Chile, Facultad de Arquitectura y Urbanismo, 2018-06)
      Santiago de Chile, habitada por cerca de 7 millones de personas, se ubica a los pies del flanco occidental de la Cordillera Principal de Los Andes, uno de los cordones montañosos más activos de nuestro planeta. La zona ...
    • Urbanization filters coccinellids composition and functional trait distributions in greenspaces across ... 
      Grez Villarroel, Audrey; Zaviezo, Tania; Gardiner, Mary M.; Alaniz, Alberto J. (Elsevier GmbH, 2019)
      Urbanization alters community composition, frequently leading to decline in native species abundance and richness. Nevertheless, responses might also depend on trait-based local habitat and landscape-scale filters. In this ...
    • Urgent care centres reduce emergency department and primary care same-day visits: A natural experiment 
      Pacheco, Jorge; Cuadrado, Cristóbal; Martínez Gutiérrez, María Soledad (Oxford University Press, 2019)
      The aim of this study is to evaluate the impact of urgent care centres' (UCCs) implementation on emergency department (ED) and same-day visits in primary care in a Chilean public healthcare network. Quasi-experimental ...
    • Usabilidad en una Herramienta de Gestión de Desarrollo de Proyectos de Software 
      Toro Ipinza, Matías (Universidad de Chile, 2008)
      Existen actualmente muchas herramientas de administración de desarrollo de software, las cuales tienen elementos de Planificación y Tracking. Pero no muchas de ellas toman estos dos elementos y los combinan. Una de las ...
    • USco1621 B and USco1556 B: two wide companions at the deuterium-burning mass limit in Upper Scorpius 
      Chinchilla, Patricia; Béjar, Víctor; Lodieu, Nicolás; Gauza, Bartos; Zapatero Osorio, María Rosa; Rebolo, Rafael; Pérez Garrido, Antonio; Álvarez, Carlos; Manjavacas, Elena (EDP Sciences, 2020)
      Aims. Our objective is to identify analogues of gas giant planets, but located as companions at wide separations of very young stars. The main purpose is to characterise the binarity frequency and the properties of these ...
    • The use of alternative breeding schemes to enhance genetic improvement in rainbow trout: II. Two-stage selection 
      Martínez, Víctor; Kause, Antti; Mäntysaari, Esa; Mäki-Tanila, Asko (ELSEVIER, 2006-04-28)
      The potential of selection in stages to increase genetic gain and profit in rainbow trout breeding was assessed. The theory of Cochran was utilized to predict genetic gains under alternative breeding schemes mimicking the ...