Now showing items 3578-3597 of 4968

    • Orellana Orellana, Omar; Jedlicki Corbeaux, Eugenia; Allende, Catherine; Allende Rivera, Jorge (Elsevier, 1984)
      A calmodulin-Ca2+-stimulated cyclic nucleotide phosphodiesterase (EC 3.1.4.17) which hydrolyzed both cGMP and cAMP has been purified about 2000-fold from ovaries of the amphibian Xenopus laevis. Gel filtration through ...
    • Kittl,; Galleguillos,; Diaz, Eloisa (1985)
      This paper presents the properties of a new fibre cement material formed by short ductile copper fibres randomly distributed in portland cement paste and compacted by compression to 35 MPa. The optimum percentage and the ...
    • Carriedo, Gabino A.; Fidalgo, José I.; Alonso, F. J.García; Soto, A. Presa; Díaz Valenzuela, Carlos; Valenzuela, María Luisa (2004)
      The reaction of [NPCl2]n first with 2,2′-dihydroxybiphenyl and K2CO3 or (R)-(+)-2,2′-dihydroxy-1,1′-binaphthyl and Cs2CO 3, and subsequently with HO-C6H4-CO 2Prn and Cs2CO3, gave the phosphazene copolymers {[NP(O2C12H8)] ...
    • Muñoz, Francisco; Altbir, D.; Kiwi Tichauer, Miguel; Morán López, J. L. (Elsevier, 2013)
      The structural configurations and magnetic properties of zig-zag nanoribbons and nanowires of Fe8−NCoN, for 0≤N≤8, are calculated within the density functional theory. Both, for the zig-zag nanoribbons and the nanowires, ...
    • Carmona, Emerson M.; Baez Nieto, David; Pupo, Amaury; Castillo, Karen; Álvarez Araya, Osvaldo; Neely, Alan; Latorre, Ramón; González, Carlos (Cell Press, 2018)
    • Muñoz Muñoz, Orlando; Peña, Raúl C.; Ureta, Enrique; Montenegro, Gloria; Timmermann, Barbara N. (Verlag der Zeitschrift fur Naturforschung, 2001)
      Viscidone (0.5%), vanillin, 3′,4′-(methylendioxy)acetophenone, 3-ethoxy-4-methoxybenzaldehyde, cinnamic acid, 3-methoxy-4-hydroxymethyl ester were isolated from propolis of hives from Cuncumen. This is the first report on ...
    • Cabo, Alejandro; Claro, Francisco; Menéndez Proupin, Eduardo (AMERICAN PHYSICAL SOC, 2006-01)
      A modified version of the Moller-Plesset approach for obtaining the correlation energy associated with a Hartree-Fock ground state is proposed. The method is tested in a model of interacting fermions that allows for an ...
    • Pino Ríos, Ricardo; Yáñez, Osvaldo; Inostroza, Diego; Ruiz, Lina; Cárdenas Valencia, Carlos; Fuentealba Rosas, Patricio; Tiznado, William (Wiley, 2017)
      The prediction of reactivity is one of the long-standing objectives of chemistry, contributing to enforce the link between theory and experiment. In particular, the regioselectivity of aromatic molecules has motivated the ...
    • MEDINA,; CARDEMIL, (1993)
      At temperatures between 25 and 35°C, 100% of Prosopis chilensis seeds germinated within 24 h. At higher temperatures, the germination rate was reduced; at 50°C, seeds did not germinate. After germination at 25°C, the optimal ...
    • Ball, James G. C.; Burgman, Mark A.; Goldman, Elizabeth D.; Lessmann, Janeth (Wiley, 2020)
      In pursuit of socioeconomic development, many countries are expanding oil and mineral extraction into tropical forests. These activities seed access to remote, biologically rich areas, thereby endangering global biodiversity. ...
    • Gotteland, Martín; Jiménez, Inés; Brunser, Oscar; Guzmán, Leda; Romero, Sergio; Cassels Niven, Bruce; Speisky Cosoy, Hernán (Georg Thieme, 1996-11-23)
      The cytoprotective and anti-inflammatory effects of boldine in an experimental model of acute colitis are reported. The administration of boldine to animals with colitis induced by the intrarectal administration of ...
    • Silva, Rubens A.; Urzúa Acevedo, Marcela; Petri, Denise F. S.; Dubin, Paul L. (AMER CHEMICAL SOC, 2010-07-04)
      Ellipsometry was used to investigate the influence of ionic strength (I) and pH on the adsorption of bovine serum albumin (BSA) or β-lactoglobulin (BLG) onto preabsorbed layers of two polycations: poly(diallyldimethylam ...
    • Rodríguez, Fernando; Allende, Catherine C.; Allende, Jorge E. (2005)
      Ectokinases can phosphorylate extracellular proteins and external domains of membrane proteins influencing cell adhesion, movement, and cellular interactions. An ectokinase with the properties of casein kinase 2 (CK2) has ...
    • Soto, Claudio; Estrada, Lisbell D. (American Medical Association, 2008-02)
      Akey molecular pathway implicated in diverse neurodegenerative diseases is the misfolding, aggregation, and accumulation of proteins in the brain. Compelling evidence strongly supports the hypothesis that accumulation ...
    • Casaretto, Jose A.; Corcuera, Luis J. (1998)
      Proteinase inhibitors (chymotrypsin and trypsin inhibitors) accumulation in barley leaves was studied when the plants were infested with the aphids Schizaphis graminum and Rhopalosiphum padi. Aphid infestation resulted ...
    • Mangiacotti, Marco; Martín, José; López, Pilar; Reyes Olivares, Claudio V.; Rodríguez Ruiz, Gonzalo; Coladonato, Alan J.; Scali, Stefano; Zuffi, Marco A. L.; Sacchi, Roberto (Springer, 2020)
      Individual recognition (IR) plays an important role in modulating social interactions of several animal species. IR may work at two fundamental levels: at class-level (CIR), if it allows group membership identification ...
    • Jean-Pierre, Féral; Saucède, Thomas; Poulin, Elie; Marschal, Christian; Marty, Gilles; Jean-Claude, Roca; Motreuil, Sébastien; Jean-Pierre, Beurier (Society for Underwater Technology, 2016)
      © 2016, Society for Underwater Technology. All rights reserved. In the context of global climate change, variations in sea surface temperature, sea level change and latitudinal shifts of oceanographic currents are expected ...
    • Nilo Poyanco, Ricardo; Saffie, Carlos; Lilley, Kathryn; Baeza Yates, Ricardo; Cambiazo Ayala, Liliana; Campos Vargas, Reinaldo; González Canales, Mauricio; Meisel, Lee; Retamales Aranda, Julio; Silva Ascencio, Herman; Orellana López, Ariel (2010)
      Background: Peach fruit undergoes a rapid softening process that involves a number of metabolic changes. Storing fruit at low temperatures has been widely used to extend its postharvest life. However, this leads to undesired ...
    • Martínez Moya, Pilar; Watt, Steven Alexander; Niehaus, Karsten; Alcaíno Gorman, Jennifer; Baeza Cancino, Marcelo; Cifuentes Guzmán, Víctor (2011)
      Background: The yeast Xanthophyllomyces dendrorhous is used for the microbiological production of the antioxidant carotenoid astaxanthin. In this study, we established an optimal protocol for protein extraction and performed ...
    • Vera, M.; Guiliani Guerin, Nicolás; Jerez Guevara, Carlos (ELSEVIER, 2003-10)
      The recent availability of an incomplete genomic sequence from Acidithiobacillus ferrooxidans allowed us to continue and strengthen the demanding task of investigating the proteome and its functional implications in this ...