Artículos de revistas: Recent submissions

Now showing items 3921-3940 of 4968

    • Lithium ion conductivity of molecularly compatibilized chitosan–poly (aminopropyltriethoxysilane)–poly(ethylene ... 
      Fuentes, S.; Retuert de la Torre, Pedro Jaime; González Moraga, Guillermo (Elsevier , Science Ltd., 2007-05-31)
      Films of composites of chitosan/poly(aminopropyltriethoxysilane)/poly(ethylene oxide) (CHI/pAPS/PEO) containing a fixed amount of lithium salt are studied. The ternary composition diagram of the composites, reporting ...
    • Deposition of Molybdenum Disulfide Thin Film on a Gold Surface 
      Benavente Espinosa, Eglantina; Riveros, G.; López, Z.; Santa Ana, María Angélica; Aliaga, Juan Antonio; González Moraga, Guillermo (Taylor & Francis Group, LLC, 2010-10-04)
      The restacking of molybdenum disulphide (MoS2) on a gold surface is reported. Thin films were obtained by spontaneous deposition from single-layer suspensions of the sulfide on a Quartz Crystal Microbalance gold electrode ...
    • Deposition of Laminar TiO2-Based Nanocomposites on a Modified Quartz Crystal Gold Surface 
      Lozano, Harold; Benavente Espinosa, Eglantina; González Moraga, Guillermo (American Scientific Publishers, 2007-11-30)
      The deposition of hybrid organic–inorganic nanocomposites of titanium dioxide—prepared by hydrolysis of titanium tretraisopropoxide modified through exchanging one of its ligands with a butinoxy-, octiloxy- or phenoxy-group—on ...
    • Interacciones sutiles: un horizonte de la química cada vez más cercano 
      González Moraga, Guillermo (Sociedad Chilena de Química, 2002)
    • Lanthanide-Clay Nanocomposites: Europium(III) Complexes Intercalated in Bentonite 
      Benavente Espinosa, Eglantina; Echeverría, Y.; Lavayen, Vladimir; Sotomayor Torres, Clivia; González Moraga, Guillermo (Chunli BAI, Sishen XIE, Xing ZHU, 2007-03-15)
    • CONSIDERACIONES TERMODINAMICAS Y PROBLEMAS SOCIOLOGICOS: BUSCANDO UNA ANALOGIA 
      González, Guillermo (Centro de Perfeccionamiento, Experimentación e Investigaciones Pedagógicas, 1980)
    • EL MUNDO QUE NOS RODEA, UN PROBLEMA DE ESTABILIDAD QUIMICA 
      González Aguilar, Guillermo (Centro de Perfeccionamiento, Experimentación e Investigaciones Pedagógicas, 1976-08)
    • Anisotropic Vanadium Oxide Nanostructured Host Matrices for Lithium Ion Intercalation 
      O’Dwyer, Colm; Lavayen, Vladimir; Santa Ana, María Angélica; Benavente Espinosa, Eglantina; González Moraga, Guillermo; Sotomayor Torres, Clivia (Hindawi Publishing Corporation, 2007-08-06)
      We report on unique high-volume low-dimensional V2O5-based turbostratic nanostructures, prepared using sol-gel synthetic methods from V2O5 · nH2O xerogels. Electrochemical intercalation of Li+ to form Li0.65V2O5 resulted ...
    • Synthesis, functionalization, and properties of intercalation compounds 
      Mirabal, N.; Lavayen, Vladimir; Benavente Espinosa, Eglantina; Santa Ana, María Angélica; González Moraga, Guillermo (Elsevier, 2004)
      Layered compounds are nanostructured, intrinsically anisotropic materials which often undergo intercalation reactions producing host– guest complexes. In this work examples from the molybdenum disulfide chemistry are used ...
    • 13C-NMR ano theoretical stuoies of internal rotation in methylateo anillnes 
      Zapata Torres, Gerald Amilcar; Parra Mouchet, Julia; Cassels Niven, Bruce (Socieda Chilena de Quìmica, 1997-08-01)
      The conformational properties of ten ring-methylated N-methyl- and N,Ndimethylanilines have been studied using 13C-NMR chemical shifts and spin-Iattice relaxation times in CDCI3, and semi-empírical (AM1) quantum-chemical ...
    • (E)-1-(4'-HYDROXY-3'-METHOXYPHENYL)-2-NITROPROPENE. C10, H11, NO4 
      Zabel, Volker; Watson, William H.; Cassels Niven, Bruce; Langs, David A. (International Union of Crystallography, 1980-01-18)
    • Inhibitory Effect of Boldine on Fish Oil Oxidation 
      Valenzuela Bonomo, Carlos; Nieto, Susana; Cassels Niven, Bruce; Spelsky, Hernan (Springer, 1991)
      The 8ntioxidative effect of boldine, an alkaloid extracted (rum Peumus boldus Mol. (boldo), was assayed on the spontaneous and on the metal·induced oxidation of fish oil. The inhibitory effect of boldine was compared ...
    • Fate of Ingested Aristolochic Acids in Battus archidamas 
      Urzúa, Alejandro; Rodríguez, Ronald; Cassels Niven, Bruce (Pergamon Journals Ltd., 1987-01-25)
      8attus archidamas larvae reared on Aristolochia chilensis sequester aristolochic acids selectively and independently of lipophilícíty. A considerable proportion of the ingasted acids can be recovered from the excreta, but ...
    • ALCALOIDES DE SOPHORA TETRAPTERA, SENSU REICHE. 1. AISLAMIENTO DE CITISINA, METILCITISINA y MATRINA DE LAS SEMILLAS 
      Urzúa, A.; Cassels Niven, Bruce (Elsevier , Science Ltd., 1970)
      Sophora tetraptera, sensu R,eiche, is the scientific name assigned to a southem Chilean tree known by the names pelú and pilopilo, which closely resembles the New Zealand species S. tetraptera J. Mill. and S. microphylla ...
    • (+)-RETICULlNA EN CRYPTOCARYA ALBA 
      Urzúa, A.; Torres, R.; Cassels Niven, Bruce (Laboratorios Mixim S.A., 1974-09-25)
      The leaves and bark of Cryptocarya alba (Mo\.) Looser (Lauraceae) were examined for alkaloida, and found to contaín a single basic component, whích was isolated and shown to be (+)-reticuline(l). This substance was ...
    • LAS CUMARINAS DE LAS HOJAS DE FAGARA MAYU 
      Torres, R.; Cassels Niven, Bruce (ASOCIACION QUIMICA ARGENTINA, 1975)
      Fagara mayu leaves yield four furanocoumarins, identified as psoralen (1), bergapten (11), xanthotoxin (111), and isopimpinellin (IV). The occurrence of these compounds together with furanoquinolines and canthinone, and ...
    • METABOLITOS SECUNDARIOS DE BERBERIS BUXIFOLIA 
      Fajardo, V.; Urzúa, A.; Cassels Niven, Bruce (Laboratorios Mixim S.A., 1979-01-10)
      Berberis buxifolia Lam. (common name "calafate") is known as a souree of berberine. Upon restudying the stem bark and roots of this plant, the presence of berberine was confirmed, and the pavine alkaloids (-)-argemonine ...
    • Metabolitos secundarios de berberis buxifolia 
      Fajardo, V.; Urzúa, A.; Torres, R.; Cassels Niven, Bruce (Universidad Técnica del Estado (Chile). Dirección de Investigaciones Científicas y Tecnológicas, 1979)
      Berberis buxifolia Lom. (nombre vulgar "calafate") es conocida como una fUente de berberina. Al reestudiar la corteza de tallos y las raices de esta plantafue posible confirmar la presencia de berberina y aislar además ...
    • SPECTRAL PROPERTIES OF RING-C-OXYGENATED 4-AZAFLUORENES AND 4-AZAFLUORENONES. THE STRUCTURES OF NATURAL ... 
      Tadic, Dragana; Cassels Niven, Bruce; Cavé, André (Elsevier , Science Ltd., 1987-09-30)
      4-Azafluorenes bcaring a methoxy group at C-5, -6, -7 or -8 and a methyl at Col or -3 were synthesized by thermolysis of O-crotyloximes of appropriately substitutcd indan-I-ones. The corrcsponding azalluorenones were ...
    • REVISED STRUCTURES OF THE AZAFLUORENONE ALKALOIDS FROM GUAITERIA DIELSIANA 
      Tadic, Dragana; Cassels Niven, Bruce; Cavé, André; Goulart, Marília O. F.; De Oliveira, Alaíde B. (Pergamon Journals Ltd., 1986-10-28)
      The structures of three alkaloids isolated from Guatteria dielsiana, 6-methoxyonychine, dielsine and dielsinol, originally described as l-azafluoren-9-ones, are revised to 4-azafluoren-9-ones on the basis of previous synthetic ...