Now showing items 3859-3878 of 4966

    • Asencio, M.; Cassels Niven, Bruce; Manríquez, V.; Boys, D. (Blackwell Munksgaard, 1996)
      Boldine (5,6,6a,7-tetrahydro-1,10-dimethoxy-6-methyl-4H-dibenzo[de,g]quinoline-2,9-diol) is an aporphine alkaloid noted for its antioxidant properties. A salient feature of the molecule is the non-planarity of the biphenyl ...
    • Victor Vargas,; Morales, Raul G.E. (1992)
      S-O stretching force constants in a series of synmetrical sulfoxide compounds were calculated from quantum chemical methods. Molecular geometries were obtained from experimental data and from MNDO and PM3 calculations. S-O ...
    • Caroli Rezende, Marcos; Núñez, Christián; Sepúlveda Boza, Silvia; Cassels Niven, Bruce; Hurtado Guzmán, Claudio (Marcel Dekker, Inc., 2001-09-18)
      The preparation of the sulfoxides and the sulfones of two centrally active alkylthioamphetamine salts, ( )-1-(4-methylthiophenyl)- 2-aminopropane hydrochloride (2) (MTA HCl) and ( )-1-(2,5-dimethoxy-4-ethylthiophenyl ...
    • Diaz,; Leal,; Yutronic Sáez, Nicolás (1996)
      The reaction of CpFe(dppe)l with disulphides S2R2 R = CH3, C3H7, CH2-C6H5, C6H5 in presence of NH4PF6 afford the unexpectedly oxidized thiolate complexes [CpFe(dppe)SR]PF6 instead the expected disulphide complexes. The ...
    • Gonzalez, Carlos; Morera, Francisco J.; Rosenmann, Eduardo; Alvarez, Osvaldo; Latorre, Ramón (2005)
      In voltage-dependent channels, positive charges contained within the S4 domain are the voltage-sensing elements. The "voltage-sensor paddle" gating mechanism proposed for the KvAP K+ channel has been the subject of intense ...
    • Planella, María Teresa; Belmar Pantelis, Carolina Andrea; Quiroz, Luciana; Niemeyer Marich, August Hermann; Falabella Gellona, Fernanda; Alfaro, Silvia; Echeverría, Javier; Albornoz, Ximena; Carrasco, Carolina; Collao Alvarado, Katherine (Universidad de Chile. Facultad de Ciencias Sociales. Departamento de Antropología, 2018)
      En este artículo presentamos nuevos conocimientos sobre costumbres fumatorias en tres regiones geográficoculturales de Chile, en que las evidencias de prácticas de fumar en pipas se constatan, con cierto desfase cronológico, ...
    • Alcántara-Núñez, J. A.; Oliveira, J. R B; Cybulska, E. W.; Medina, N. H.; Rao, M. N.; Ribas, R. V.; Rizzutto, M. A.; Seale, W. A.; Falla-Sotelo, F.; Espinoza-Quiñones, F. R.; Tenreiro, C. (2003)
      A large solid angle low-Z charged particle detector system was built in order to improve the quality of the identification and selection of evaporation channels for in-beam γ-spectroscopy measurements. The array consists ...
    • Leiva Ampuero, Andrés; Agurto, Mario; Matus, José Tomás; Hoppe, Gustavo; Huidobro, Camila; Inostroza Blancheteau, Claudio; Reyes Díaz, Marjorie; Stange, Claudia; Canessa, Paulo; Vega, Andrea (PEERJ, 2020)
      Carotenoids are essential components of the photosynthetic antenna and reaction center complexes, being also responsible for antioxidant defense, coloration, and many other functions in multiple plant tissues. In tomato, ...
    • Varas, Macarena; Ortíz Severín, Javiera; Marcoleta Caldera, Andrés; Díaz Pascual, Francisco; Allende Connelly, Miguel; Santiviago Cid, Carlos; Chávez Espinosa, Francisco (Elsevier, 2017)
      Pathogenic Salmonella strains have a set of virulence factors allowing them to generate systemic infections and damage in a variety of hosts. Among these factors, bacterial proteins secreted by specialized systems are used ...
    • Juricic Urzúa, María de los Angeles; Berríos Cárcamo, Pablo; Acevedo, Mónica L.; Israel Jacard, Yedy; Almodóvar, Iriux; Cassels Niven, Bruce (2012)
      Dopamine (DA) condenses, at least in vitro, with acetaldehyde, the primary metabolite of ethanol, to form the regioisomers salsolinol (SAL) and isosalsolinol (isoSAL). An alternative in vivo route to SAL, requiring a ...
    • Fonturbel, Francisco E.; Rodríguez Gómez, Gloria B.; Fernández, Nerea; García, Benat; Orellana, José I.; Castaño-Villa, Gabriel J. (Elsevier, 2020)
      Point counts are widely used to assess bird diversity. However, this method has some limitations and can be affected by observer bias. For this reason, it is commonly complemented with other methods (e.g., mist-nets, sound ...
    • Vázquez, M. Jesús; Quiñoá, Emilio; Riguera, Ricardo; San Martín Barrientos, Aurelio; Dárias, José (1992)
      A new asterosaponin, named santiagoside (1), has been isolated from the Antarctic starfish Neosmilaster georgianus and, its structure elucidated on the basis of extensive spectroscopic experiments and chemical correlations. ...
    • Merino, Santiago; Vásquez Salfate, Rodrigo; Martínez, Javier; Celis-Diez, Juan L.; Martínez de la Fuente, Josué; Marín Vial, Paula; Sánchez Monsalvez, Inocencia; Peirce, Michael A. (WILEY-BLACKWELL PUBLISHING, INC,, 2008-11)
      The blood of 21 adult South American mouse opossums (Thylamys elegans) captured from April through August of 2005 in central Chile was examined for parasites. Light microscopic analysis of blood smears initially suggested ...
    • Merino, Santiago; Vásquez Salfate, Rodrigo; Martínez, Javier; Celis Diez, Juan Luis; Martínez de la Fuente, Josué; Marín Vial, Paula; Sánchez Monsalvez, Inocencia; Peirce, Michael A. (BLACKWELL, 2008-12)
      The blood of 21 adult South American mouse opossums (Thylamys elegans) captured from April through August of 2005 in central Chile was examined for parasites. Light microscopic analysis of blood smears initially suggested ...
    • García, Ana M.; Lennon Duménil, Ana María; Hidalgo Tapia, María Cecilia (1975)
    • Montecino Latorre, Diego; Napolitano, Constanza; Briceño, Cristóbal; Uhart, Marcela M. (Elsevier, 2020)
      Sarcoptic mange has been anecdotally reported in Chilean wildlife during the last decade. Although thisdisease can have devastating outcomes for biodiversity, there is no comprehensive assessment of thispotential threat ...
    • Molina Gálvez, Mario (American Physical Society, 2018)
      © 2018 American Physical Society. We examine a one-dimensional linear waveguide array containing a single saturable waveguide. By using the formalism of lattice Green functions, we compute in closed form the localized mode ...
    • Saavedra, María Verónica; Smalla, Karl Heinz; Thomas, Ulrich; Sandoval, Soledad; Olavarria, Karel; Castillo, Karen; Delgado, María Graciela; Delgado, Ricardo; Gundelfinger, Eckart D.; Bacigalupo Vicuña, Juan; Wyneken, Ursula (2008)
      Odour-mediated signal transduction is a complex process that occurs in the cilia of olfactory sensory neurons. To gain insight in to the molecular organization of the odour transduction machinery, we developed a procedure ...
    • Fontúrbel, Francisco E.; Jordano, Pedro; Medel Contreras, Rodrigo (Wiley & Sons, 2015)
      Transformed habitats are the result of deliberate replacement of native species by an exotic monoculture, involving changes in biotic and abiotic conditions. Despite the fact that transformed habitats are becoming more ...
    • Arias Federici, Rodrigo; Maradudin, Alexei A. (Optical Society of America, 2013-04)
      On the basis of a rigorous, nonperturbative, purely numerical solution of the corresponding reduced Rayleigh equation for the scattering amplitudes we have studied the scattering of a surface plasmon polariton by a two ...