Browsing by Title

Now showing items 57567-57586 of 91374

    • Microwave activated lithium intercalation in transition metal sulfides 
      Benavente, E.; González Moraga, Guillermo (Elsevier Ltd, 1997)
      The reaction rates for the intercalation of lithium in molybdenum and titanium sulfide activated by microwave irradiation at room temperature and atmospheric pressure leading to products of relatively high crystallinity ...
    • Microwave-assisted extraction at atmospheric pressure coupled to different clean-up methods for the ... 
      Fuentes, Edwar; Báez, María E.; Díaz, Juan (2009)
      An effective extraction method was devised for the determination of organophosphorus pesticides (OPPs) in olive and avocado oil samples, using atmospheric pressure microwave-assisted liquid-liquid extraction (APMAE) and ...
    • Microwave-assisted extraction through an aqueous medium and simultaneous cleanup by partition on hexane for ... 
      Fuentes Pérez, Edwar; Báez Contreras, María Estrella; Reyes, Dana (ELSEVIER, 2006-09-25)
      A simple microwave-assisted extraction and partitioning method (MAEP) using water-acetonitrile and n-hexane for desorption and simultaneous partitioning, respectively, together with gas chromatography (GC) was studied to ...
    • Microwave-assisted solvent extraction of the herbicide methabenzthiazuron from soils and some soil natural ... 
      Báez Contreras, María Estrella; Aponte, Abdiel; Sánchez Rasero, Francisco (ROYAL SOC CHEMISTRY, 2003)
      A microwave-assisted solvent extraction (MASE) method for the determination of methabenzthiazuron (MBT) in soil samples by HPLC-DAD ( diode array detection) was evaluated. Spiked soil samples having different physico-chemical ...
    • Microwave-assisted synthesis and regioisomeric structural elucidation of novel benzimidazo[1,2d][1,4]benz ... 
      Pessoa, D.; Espinosa Bustos, Christian; Mella Raipán, Jaime A.; Canales Pacheco, Jorge; Pessoa Mahana, Hernán (ARKAT USA INC, 2009)
      The synthesis of 5H-benzimidazo [1,2-d] [1,4] benzodiazepin -6(7H)-ones 3a-e from readily available 2-(2-aminophenyl)-1H-benzo[d]imidazole derivatives 2a-e and 2-bromoacetyl bromide under microwave conditions is described. ...
    • Microwave-assisted synthesis of localized surface plasmon resonance enhanced bismuth selenide (Bi2Se3) ... 
      Dennyson Savariraj, A.; Vinoth, V.; Mangalaraja, R. V.; Arun, T.; Contreras, David; Akbari-Fakhrabadi, Ali; Valdes, Héctor; Banat, Fawzi (Elsevier, 2020)
      Three-dimensional (3D) bismuth selenide (Bi2Se3) nanostructures were synthesized by microwave synthesis using water as a solvent and hydrazine hydrate as a reducing agent and exfoliated into few layers of Bi2Se3. Bi2Se3- ...
    • Microzonificaciones de borde costero en la región de Los Lagos, Chile: experiencias de participación de ... 
      Molina Canales, María Catalina (Universidad de Chile, 2016)
      Considerando el desafío de la participación ciudadana en el ciclo de Política Pública, la investigación analiza la participación de actores en la implementación de la Política Nacional de Uso del Borde Costero (1994) a ...
    • Microzonificaciones sísmicas en ciudades del mundo y discusión sobre la aplicabilidad en la ciudad de Santiago 
      Errazuriz Blau, José Tomás (Universidad de Chile, 2012)
      Se realiza un análisis de microzonificaciones sísmicas realizadas en ciudades del mundo, con el objetivo de identificar las técnicas más sobresalientes usadas en estas ciudades para enfrentar el desafío de distinguir zonas ...
    • Microzonificación Sísmica del Sector Sur Poniente de Santiago, Comunas Buin y Paine 
      Brantt Hidalgo, Cristina Estefania (Universidad de Chile, 2011)
      El pasado terremoto del 27/02/2010 de magnitud Mw 8,8, afectó una extensa zona de Chile central. Dentro de las zonas que presentaron daño, se cuentan las comunas de Buin y Paine de la Región Metropolitana. Tras el sismo ...
    • Microzonificación sísmica en los sectores de Lampa y Batuco, Región Metropolitana, Chile 
      Gálvez Vega, Carlos Alberto (Universidad de Chile, 2012)
      El terremoto del pasado 27 de febrero del 2010, de magnitud Mw=8.8 y epicentro en las costas de Constitución, causó grandes daños materiales y personales entre IX a la V Región. En Santiago, ciudad que ya había sido afectada ...
    • Micrófono abierto. Historias y canciones del pop chileno independiente de la último década 
      Cayo Gómez, Claudia (Universidad de Chile, 2015-11)
      La presente memoria es una investigación sobre música, centrada en el pop independiente chileno de la última década, donde los protagonistas son artistas marcados por la globalización, internet y la era digital. El objetivo ...
    • MICU Museo de la Identidad de Curicó : centro de rescate y difusión del patrimonio provincial 
      Araya Reyes, José (Universidad de Chile, 2017)
    • Mid Holocene radiocarbon ages in the Subtropical Andes (~29° - 35° S), climatic change and implications for ... 
      Méndez Melgar, César; Gil, Adolfo; Neme, Gustavo; Nuevo Delaunay, Amalia; Cortegoso, Valeria; Huidobro, Consuelo; Durán, Víctor; Maldonado, Antonio (Elsevier, 2015)
      This article discusses the distribution of radiocarbon age signatures obtained from archeological sites between 29 and 35 S in Central Chile and Midwest Argentina. The goal of this analysis is to establish bases from ...
    • Mid-Cenozoic SHRIMP U-Pb detrital zircon ages from metasedimentary rocks in the north Patagonian Andes of ... 
      Quezada, Paulo; Herve Allamand, Francisco Enrique; Calderón, Mauricio; Fanning, Mark; Pankhurst, Robert; Godoy, Estanislao; Urbina, Octavio; Suárez, Rodrigo (Servicio Nacional de Geología y Minería, Chile, 2021)
      Previously undated low-grade metamorphic rocks from the Puerto Cisnes-Queulat area (44 degrees 30' S) contain detrital zircons of mid-Oligocene age (ca. 28 Ma). Their outcrops represent the easternmost occurrence of the ...
    • Mid-Holocene climate and culture change in the Atacama Desert, Northern Chile 
      Grosjean, Martin; Núñez, Lautaro; Cartajena, Isabel; Messerli, Bruno (Academic Press Inc., 1997)
      Twenty archaeological campsites intercalated between more than 30 debris flows caused by heavy rainfall events between 6200 and 3100 14C yr B.P. have recently been discovered at Quebrada Puripica in the Atacama Desert of ...
    • Mid-Holocene mean climate in the south eastern Pacific and its influence on South America 
      Carré, Matthieu; Azzoug, Moufok; Bentaleb, Ilhem; Chase, Brian M.; Fontugne, Michel; Jackson Squella, Donald; Ledru, Marie-Pierre; Maldonado, Antonio; Sachs, Julian; Schauer, Andrew J. (Elsevier, 2012)
      The eastern tropical Pacific plays a key role in the tropical atmospheric circulation and in the global carbon cycle, and assessing the sensitivity of this region to global climate changes is a major challenge facing ...
    • Mid-infrared circumstellar emission of the long-period Cepheid Carinae resolved with VLTI/MATISSE 
      Hocdé, V.; Nardetto, N.; Matter, A.; Lagadec, E.; Mérand, A.; Cruzalèbes, P.; Meilland, A.; Millour, F.; Lopez, B.; Berio, P.; Weigelt, G.; Petrov, R.; Isbell, J.W.; Jaffe, W.; Kervella, P.; Glindemann, A.; Schöller, M.; Allouche, F.; Gallenne, Alexandre; De Souza, A. Domiciano; Niccolini, G.; Kokoulina, E.; Varga, J.; Lagarde, S.; Augereau, J.C.; Van Boekel, R.; Bristow, P.; Henning, Th.; Hofmann, K.-H.; Zins, G.; Danchi, W.-C; Delbo, M.; Dominik, C.; Gámez Rosas, V.; Klarmann, L.; Hron, J.; Hogerheijde, M. R.; Meisenheimer, K.; Pantin, E.; Paladini, C.; Robbe Dubois, S.; Schertl, D.; Stee, P.; Waters, R.; Lehmitz, M.; Bettonvil, F.; Heininger, M.; Bristow, P.; Woillez, J.; Wolf, S.; Yoffe, G.; Szabados, L.; Chiavassa, A.; Borgniet, S.; Breuval, L.; Javanmardi, B.; Ábrahám, P.; Abadie, S.; Abuter, R.; Accardo, M.; Adler, T.; Agócs, T.; Alonso, J.; Antonelli, P.; Böhm, A.; Bailet, C.; Bazin, G.; Beckmann, U.; Beltrán, J.; Boland, W.; Bourget, P.; Brast, R.; Bresson, Y.; Burtscher, L.; Buter, R.; Castillo, R.; Chelli, A.; Cid, C.; Clausse, J. M.; Connot, C.; Conzelmann, R.D.; Haan, M. de; Ebert, M.; Elswijk, E.; Fantei, Y.; Frahm, R.; Gabasch, A.; Garcés, E.; Girard, P.; Glazenborg, A.; Gonté, F. Y. J.; González Herrera, J. C.; Graser, U.; Guajardo, P.; Guitton, F.; Hanenburg, H.; Haubois, X.; Hubin, N.; Huerta, R.; Idserda, J.; Ives, D.; Jakob, G.; Jaskó, A.; Jochum, L.; Klein, R.; Kragt, J.; Kroes, G.; Kuindersma, S.; Labadie, L.; Laun, W.; Le Poole, R.; Leinert, C.; Lizon, J. L.; López, M.; Marcotto, A.; Mauclert, N.; Maurer, T.; Mehrgan, L. H.; Meisner, J.; Meixner, K.; Mellein, M.; Mohr, L.; Morel, S.; Mosoni, L.; Navarro, R.; Neumann, U.; Nußbaum, E.; Pallanca, L.; Pasquini, L.; Percheron, I.; Phan Duc, T.; Pott, J.U.; Pozna, E.; Ridinger, A.; Rigal, F.; Riquelme, M.; Rivinius, Th.; Roelfsema, R.; Rohloff, R. R.; Rousseau, S.; Schuhler, N.; Schuil, M.; Shabun, K.; Soulain, A.; Stephan, C.; Horst, R. ter; Tromp, N.; Vakili, F.; Van Duin, A.; Venema, L.B.; Vinther, J.; Wittkowski, M.; Wrhel, F. (EDP Sciences, 2021)
      Context. The nature of circumstellar envelopes (CSEs) around Cepheids is a matter of ongoing debate. The physical origin of their infrared (IR) excess could be shown to either be made up of a shell of ionized gas, a dust ...
    • Mid-infrared properties and color selection for X-ray-detected active galactic nuclei in the MUSYC extended ... 
      Cardamone, Carolin N.; Urry, C. Megan; Damen, Maaike; van Dokkum, Pieter; Treister, Ezequiel; Labbé, Ivo; Virani, Shanil N.; Lira Teillery, Paulina; Gawiser, Eric (UNIV CHICAGO PRESS, 2008-06-10)
      We present the mid-infrared colors of X-ray-detected AGNs and explore mid-infrared selection criteria. Using a statistical matching technique, the likelihood ratio, over 900 IRAC counterparts were identified with a new ...
    • Mid-latitude trans-pacific reconstructions and comparisons of coupled glacial/interglacial climate cycles ... 
      Alloway, B. V.; Almond, P. C.; Moreno Moncada, Patricio; Sagredo, E.; Kaplan, M. R.; Kubik, P. W.; Tonkin, P. J. (Elsevier, 2018-06)
      South Westland, New Zealand, and southern Chile, are two narrow continental corridors effectively confined between the Pacific Ocean in the west and high mountain ranges in the east which impart significant influence over ...
    • Mid-term follow-up of balloon pulmonary angioplasty for inoperable chronic thromboembolic pulmonary ... 
      Sepúlveda, Pablo; Hameau, René; Backhouse, Christian; Charme, Gustavo; Pacheco, Francisco; Ramírez, Pablo A.; Fuensalida, Alberto J.; Quitral, Jorge; Martínez, Gonzalo; Martínez, José A. (Wiley, 2020)
      Objectives To describe the characteristics of patients who undergo balloon pulmonary angioplasty (BPA) for inoperable chronic thromboembolic pulmonary hypertension (CTEPH) and report the mid-term outcomes. Background BPA ...