Browsing by Title Artículos de revistas

Now showing items 1313-1332 of 1381

    • 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 ...
    • Ultrasound-assisted synthesis of novel chalcone, heterochalcone and bis-chalcone derivatives and the ... 
      Polo, Efraín; Ibarra-Arellano, N.; Prent-Peñaloza, Luis; Morales-Bayuelo, Alejandro; Henao, José; Galdámez, Antonio; Gutiérrez, Margarita (Academic Press Inc., 2019)
      The chalcone and bis-chalcone derivatives have been synthesized under sonication conditions via Claisen-Schmidt condensation with KOH in ethanol at room temperature (20–89%). The structures were established on the basis ...
    • Uncovering the potential of novel micromonosporae isolated from an extreme hyper-arid Atacama Desert soil 
      Carro, Lorena; Castro, Jean Franco; Razmilic, Valeria; Nouioui, Imen; Pan, Che; Igual, José M.; Jaspars, Marcel; Goodfellow, Michael; Bull, Alan T.; Asenjo, Juan A.; Klenk, Hans Peter (Nature Publishing Group, 2019)
      The taxonomic status, biotechnological and ecological potential of several Micromonospora strains isolated from an extreme hyper arid Atacama Desert soil were determined. Initially, a polyphasic study was undertaken to ...
    • Understanding nebular spectra of Type Ia supernovae 
      Wilk, Kevin D.; Hillier, D. John; Dessart, Luc (Oxford University Press, 2020)
      In this study, we present one-dimensional, non-local-thermodynamic-equilibrium, radiative transfer simulations (using CMFGEN) in which we introduce micro-clumping at nebular times into two Type Ia supernova ejecta models. ...
    • Understanding the cyclic response of RC walls with setback discontinuities through a finite element model ... 
      Massone, Leonardo M.; Manríquez, Ignacio; Díaz, Sebastián; Rojas, Fabián; Herrera, Ricardo (Springer Netherlands, 2019)
      Slender RC walls are often used in Chile and commonly, due to architectural constraint, the length of walls increases (setback) between floors designated for parking space and upper floors. These types of elements are ...
    • Understanding the phenomenon of copper ions release from copper-modified TFC membranes: A mathematical and ... 
      Quezada, Rodrigo; Quintero Giraldo, Yurieth; Salgado Herrera, José; Estay, Humberto; García, Andreina (MDPI, 2020)
      Type of metal and metal-oxide NPs added to modify Thin-Film Composites Reverse Osmosis Membranes (TFC-RO) can alter their anti-biofouling properties by changing the dissolution process. The development of a mathematical ...
    • Uniform W-1,W-p estimates for an elliptic operator with Robin boundary condition in a C-1 domain 
      Amrouche, C.; Conca Rosende, Carlos; Ghosh, A.; Ghosh, T. (Springer, 2020)
      We consider the Robin boundary value problem div(A del u) = div f + F in Omega, a C-1 domain, with (A del u - f) . n + alpha u = g on Gamma, where the matrix A belongs to VMO(R-3), and discover the uniform estimates on ...
    • Unipolar resistive switching behavior in Al2O3/HfO2 multilayer dielectric stacks: fabrication, characterization ... 
      Maestro Izquierdo, M.; González, M. B.; Jiménez Molinos, F.; Moreno, E.; Roldán, J. B.; Campabadal, F. (IOP Publishing, 2020)
      In this work, the impact of different HfO2/Al2O3-based multilayer dielectric stack (DS) configurations on the electrical characteristics and on the resistive switching (RS) performance of Ni/Insulator/Silicon devices has ...
    • Universal weak variable-length source coding on countably infinite alphabets 
      Silva, Jorge F.; Piantanida, Pablo (Institute of Electrical and Electronics Engineers, 2020)
      Motivated from the fact that universal source coding on countably infinite alphabets (infinity-alphabets) is not feasible, this work introduces the notion of "almost lossless source coding". Analog to the weak variable-length ...
    • Unprecedented differences in the diamond nucleation density between carbon- and silicon-faces of 4H-silicon ... 
      Wang, Bo; Sukkaew, Pitsiri; Song, Guichen; Rosenkranz, Andreas; Lu, Yunxiang; Nishimura, Kazhihito; Wang, Jia; Lyu, Jilei; Cao, Yang; Yi, Jian; Ojamäe, Lars; Li, He; Jiang, Nan (Elsevier, 2020)
      4H-silicon carbides deposited by diamond films have wide applications in many fields such as semiconductor heterojunction, heat sink and mechanical sealing. Nucleation plays a critical role in the deposition of the diamond ...
    • Unpredictability in pedestrian flow: The impact of stochasticity and anxiety in the event of an emergency 
      Ramírez, M.; Torres, F.; Toledo, B. A.; Coello, M.; Correa-Burrows, P.; Rogan, J.; Valdivia, J. A. (Elsevier B.V., 2019)
      Random interactions among pedestrians, usually produced by psychological effects (e.g. anxiety), can produce collective nontrivial phenomena in their flow dynamics. Here, we improve our understanding on these phenomena by ...
    • Unraveling the Complex Behavior of Mrk 421 with Simultaneous X-Ray and VHE Observations during an Extreme ... 
      Acciari, V. A.; Ansoldi, S.; Antonelli, L. A.; Engels, A. Arbet; Baack, D.; Babic, A.; Banerjee, B.; Barres de Almeida, U.; Barrio, J. A.; Becerra Gonzalez, J.; Bednarek, W.; Bellizzi, L. K.; Bernardini, E.; Berti, A.; Besenrieder, J.; Bhattacharyya, W.; Bigongiari, C.; Biland, A.; Blanch, O.; Bonnoli, G.; Bosnjak, Z.; Busetto, G.; Carosi, R.; Ceribella, G.; Cerruti, M.; Chai, Y.; Chilingarian, A.; Cikota, S.; Colak, S. M.; Colin, U.; Colombo, E.; Contreras, J. L.; Cortina, J.; Covino, S.; D'Elia, V.; Da Vela, P.; Dazzi, F.; De Angelis, A.; De Lotto, B.; Del Puppo, F.; Delfino, M.; Delgado, J.; Depaoli, D.; Di Pierro, F.; Di Venere, L.; Do Souto Espineira, E.; Prester, D. Dominis; Donini, A.; Dorner, D.; Doro, M.; Elsaesser, D.; Ramazani, V. Fallah; Ferrara, G.; Foffano, L.; Fonseca, M. V.; Font, L.; Fruck, C.; Fukami, S.; Garcia Lopez, R. J.; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Giglietto, N.; Giordano, F.; Gliwny, P.; Godinovic, N.; Green, D.; Hadasch, D.; Hahn, A.; Hassan, T.; Herrera, J. J.; Hoang, J.; Hrupec, D.; Huetten, M.; Inada, T.; Inoue, S.; Ishio, K.; Iwamura, Y.; Jouvin, L.; Kajiwara, Y.; Kerszberg, D.; Kobayashi, Y.; Kubo, H.; Kushida, J.; Lamastra, A.; Lelas, D.; Leone, F.; Lindfors, E.; Lombardi, S.; Longo, F.; Lopez, M.; Lopez-Coto, R.; Lopez-Oramas, A.; Loporchio, S.; Machado de Oliveira Fraga, B.; Maggio, C.; Majumdar, P.; Makariev, M.; Mallamaci, M.; Maneva, G.; Manganaro, M.; Mannheim, K.; Maraschi, L.; Mariotti, M.; Martinez, M.; Mazin, D.; Mender, S.; Micanovic, S.; Miceli, D.; Miener, T.; Minev, M.; Miranda, J. M.; Mirzoyan, R.; Molina, E.; Moralejo, A.; Morcuende, D.; Moreno, V.; Moretti, E.; Munar-Adrover, P.; Noda, K.; Nogues, L.; Nozaki, S.; Ohtani, Y.; Oka, T.; Otero-Santos, J.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Pavletic, L.; Penil, P.; Peresano, M.; Persic, M.; Moroni, P. G. Prada; Prandini, E.; Puljak, I.; Rhode, W.; Ribo, M.; Rico, J.; Righi, C.; Rugliancich, A.; Saha, L.; Sahakyan, N.; Saito, T.; Sakurai, S.; Satalecka, K.; Schleicher, B.; Schmidt, K.; Schweizer, T.; Sitarek, J.; Snidaric, I.; Sobczynska, D.; Spolon, A.; Stamerra, A.; Strom, D.; Strzys, M.; Suda, Y.; Suric, T.; Takahashi, M.; Tavecchio, F.; Temnikov, P.; Terzic, T.; Teshima, M.; Torres-Alba, N.; Tosti, L.; van Scherpenberg, J.; Vanzo, G.; Vazquez Acosta, M.; Ventura, S.; Verguilov, V.; Vigorito, C. F.; Vitale, V.; Vovk, I.; Will, M.; Zaric, D.; Petropoulou, M.; Finke, J.; D'Ammando, F.; Balokovi, M.; Madejskic, G.; Mori, K.; Puccetti, Simonetta; Leto, C.; Perri, M.; Verrecchia, F.; Villata, M.; Raiteri, C. M.; Agudo, I.; Bachev, R.; Berdyugin, A.; Blinov, D. A.; Chanishvili, R.; Chen, W. P.; Chigladze, R.; Damljanovic, G.; Eswaraiah, C.; Grishina, T. S.; Ibryamov, S.; Jordan, B.; Jorstad, S. G.; Joshi, M.; Kopatskaya, E. N.; Kurtanidze, O. M.; Kurtanidze, S. O.; Larionova, E. G.; Larionova, L. V.; Larionov, V. M.; Latev, G.; Lin, H. C.; Marscher, A. P.; Mokrushina, A. A.; Morozova, D. A.; Nikolashvili, M. G.; Semkov, E.; Smith, P. S.; Strigachev, A.; Moody, J. W.; Sadun, A. C.; Hovatta, T.; Richards, J. L.; Max-Moerbeck Astudillo, Walter; Readhead, A. C. S.; Lahteenmaki, A.; Tornikoski, M.; Tammi, J.; Ramakrishnan, V.; Reinthal, R. (IOP Publishing, 2020)
      We report on a multiband variability and correlation study of the TeV blazar Mrk 421 during an exceptional flaring activity observed from 2013 April 11 to 19. The study uses, among others, data from GLAST-AGILE Support ...
    • Unraveling the Effects of Melt-Mantle Interactions on the Gold Fertility of Magmas 
      Tassara, Santiago; Reich Morales, Martín; Konecke, Brian A.; González Jiménez, José María; Simon, Adam C.; Morata Céspedes, Diego; Barra Pantoja, Fernando; Fiege, Adrián; Schilling, Manuel E.; Corgne, Alexandre (Frontiers Media, 2020)
      The oxidation state of the Earth's mantle and its partial melting products exert a key control on the behavior and distribution of sulfur and chalcophile and siderophile elements between the mantle and crust, underpinning ...
    • Unusual Galactic HiiRegions at the Intersection of the Central Molecular Zone and the Far Dust Lane 
      Anderson, L. D.; Sormani, M. C.; Ginsburg, Adam; Glover, Simon C.O.; Heywood, I.; Rammala, I.; Schuller, F.; Csengeri, T.; Urquhart, J. S.; Bronfman Aguiló, Leonardo (IOP Publishing, 2020)
      Sgr.E is a massive star formation complex found toward the Galactic center that consists of numerous discrete, compact H II regions. It is located at the intersection between the central molecular zone (CMZ) and the far ...
    • 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)
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Using Natural Waste Material as a Matrix for the Immobilization of Enzymes: Chicken Eggshell Membrane Powder ... 
      Kessi Campos, Elías; Arias Bautista, José Luis (Springer, 2019)
      Avian eggshell membranes are good candidates as a matrix for immobilization procedures. Chicken eggshell, a waste material available from the poultry industry as a byproduct, is a very safe and cheap raw material. While ...