Now showing items 53-72 of 2801

    • Azócar, Manuel; Tamayo, Laura; Vejar, Nelson; Gómez, Grace; Zhou, Xiangrong; Thompsom, George; Cerda, Enrique; Kogan Bocian, Marcelo; Salas, Edison; Páez, Maritza (Kluwer Academic Publishers, 2014)
      We report here a systematic study of the antibacterial behavior of silver nanoparticles coated with fatty acids (oleic: AgNP-O, linoleic: AgNP-L, and palmitic acids: AgNP-P) in water. We have found remarkable differences ...
    • Peña Ahumada, Bárbara; Saldarriaga Córdoba, Mónica; Kardailsky, Olga; Moncada, Ximena; Moraga Vergara, Mauricio; Matisoo Smith, Elizabeth; Seelenfreund, Daniela; Seelenfreund, Andrea (Public Library Science, 2020)
      Humans introduced paper mulberry (Broussonetia papyrifera) from Taiwan into the Pacific over 5000 years ago as a fiber source to make barkcloth textiles that were, and still are, important cultural artifacts throughout the ...
    • Rodriguez, Barbara X.; Simonen, Kathrina; Huang, Monica; De Wolf, Catherine (Emerald Group Publishing Ltd., 2019)
      Purpose: The purpose of this paper is to present an analysis of common parameters in existing tools that provide guidance to carry out Whole Building Life Cycle Assessment (WBLCA) and proposes a new taxonomy, a catalogue ...
    • Levicán, Gloria; Katz, Assaf; Valenzuela, Patricio; Söll, Dieter; Orellana, Omar (2005)
      Glu-tRNA is either bound to elongation factor Tu to enter protein synthesis or is reduced by glutamyl-tRNA reductase (GluTR) in the first step of tetrapyrrole biosynthesis in most bacteria, archaea and in chloroplasts. ...
    • Figueroa, K.; Campos Vallette, Marcelo; Quezada, E.; Venegas, D.; Quiroz, A. (1991)
      Infrared data for N-benzylideneanilines mono- and disubstituted predict, in agreement with CNDO molecular orbital calculations, that the internal energy transfer is induced mainly by a donor group in para position of the ...
    • Vasquez, Fabian; Correa-Burrows, Paulina; Blanco, Estela; Gahagan, Sheila; Burrows, Raquel (Nature Publishing Group, 2019)
      Background: We aimed to determine the sensitivity and specificity of selected anthropometric indicators as predictors of cardiovascular risk in adolescents. Methods: Cross-sectional study in 678 adolescents (16.8 y ± 0.3) ...
    • Ahumada, H.; Montecinos, R.; Martínez, R.; Araya Maturana, Ramiro; Weiss López, Boris (SOCIEDAD CHILENA DE QUIMICA, 2004-09)
      Deuterium quadrupole splittings, of deuterated water, Deltav, in anionic discotic nematic lyomesophases are always much larger than in cationic mesophases. To explore the possible origins of this difference, Deltav and T-1 ...
    • Reynolds, M. Megan; Bogomolnaya, Lydia; Guo, Jinbai; Aldrich, Lindsay; Bokhari, Danial; Santiviago Cid, Carlos; McClelland, Michael; Andrews Polymenis, Helene L. (PUBLIC LIBRARY SCIENCE, 2011-01-26)
      TatC (STM3975) is a highly conserved component of the Twin Arginine Transport (Tat) systems that is required for transport of folded proteins across the inner membrane in gram-negative bacteria. We previously identified a ...
    • Gai,; Thielemann,; Munoz,; Telha,; Chavez, (1993)
      The absolute biovailability of a sustained release tablet developed in our laboratory was evaluated. The formulation employs acrylic resins Eudragit as the sustaining release system and tablets were obtained using conventional ...
    • Sepulveda, L (1974)
      The absorbances in the uv region of sodium p-toluene sulfonate, sodium toluate, sodium benzene sulfonate and sodium phenyl phosphate have been measured in the presence of increasing amounts of cetyl trimethyl ammonium ...
    • Arancibia,; Corvalan,; Mella,; Concha, (1986)
      The absorption and disposition kinetics of lithium carbonate administered to eight healthy volunteers in two dosage forms were studied. A conventional immediate release tablet and a controlled release preparation, developed ...
    • Hurtado Heim, Carmen; Acevedo, Carlos; Domecq Jeldres, Catalina; Burdiles Pinto, Patricio; Csendes Juhasz, Attila; Arancibia, Aquiles (Lippincott Williams & Wilkins, 1988)
      Acetylsalicylic acid (ASA) is one of the oldest and most widely used medicinal agents today and its spectrum of therapeutic use is continually widening. Although many other drugs have been introduced during the last few ...
    • Valderrama, Jaime A.; Pessoa Mahana, Hernán; Sarras, Gabriela; Tapia, Ricardo (1999)
      A synthesis of N-(2-nitrobenzyl)acetanilide (5) and (11) from 2- nitrobenzaldehyde and aromatic amines is reported. The reaction of amides (5) and (11) with iron in acetic acid-ethanol-water provided the corresponding 3- ...
    • García, R.; Erazo, Silvia; Lemus Gutiérrez, Igor; Donoso, Rafael; Pivet, Hilda; Lazo Araya, Waldo; Ferrada, Luis (Escuela de Medicina, Facultad de Medicina, Universidad de Valparaíso, 1987)
      Se realizó un estudio fitomicrobiológico con extractos de Allium sativum (ajo). se identificó en el extracto el principio activo alicina. Se estudió su acción antimicótica frente a varias cepas de Aspergillus fumigatus, ...
    • Préndez Bolívar, María Margarita; Carrasco, Basilio (Sociedad Agronómica de Chile, 1995)
      Recientes estudios muestran que el bromuro de metilo es una sustancia potencialmente muy destructora de la capa de ozono, pues el radical bromo es 50 veces mas destructivo que el radical cloro. Como producto agroquímico ...
    • López Valladares, Luis; Romero Reyes, José; Ureta V., Fernando (Sociedad Latinoamericana de Nutrición, 2002-03)
      Existe en el mercado una gran variedad de productos desinfectantes de uso tradicional en la industria alimentaria, como cloro, yodo, amonios cuaternarios y sus respectivos derivados. Sin embargo, han aparecido otros ...
    • Tapia, Y.; Salazar, O.; Nájera, F.; Gárate, A.; Eymar, E.; Masaguer, A. (Taylor and Francis Inc., 2014)
      Rosmarinus officinalis is an important aromatic shrub cultivated for medicinal, culinary, and ornamental uses. To assess growth, the contents of trace metals cadmium (Cd), copper (Cu), iron (Fe), manganese (Mn), lead (Pb), ...
    • Mendoza Torres, Evelyn; Oyarzún, Alejandra; Mondaca Ruff, David; Azocar, Andrés; Chiong Lay, Mario; Castro, Pablo F.; Jalil Milad, Jorge; Lavandero González, Sergio; Ocaranza, María Paz (2015)
      The renin–angiotensin system (RAS) is a key component of cardiovascular physiology and homeostasis due to its influence on the regulation of electrolyte balance, blood pressure, vascular tone and cardiovascular remodeling. ...
    • Valdebenito, Carolina; Garland, María Teresa; Quijada Abarca, Juan; Rojas, Rene S. (2009)
      The reaction of (2,6-diisopropyl-phenyl)-acetimidoyl chloride or (2,6-dimethyl-phenyl)-acetimidoyl chloride with 2,6-dimethylaniline in the presence of triethylamine yields a mixture of isomers N′-(2,6-diisopropyl-phenyl ...
    • Robert Canales, Paz; García, Paula; Reyes, Natalia; Chávez, Jorge; Santos, José (2012)
      Gallic acid (GA) was encapsulated with native starch (NS), native inulin (NIn), acetylated starch (AS) or acetylated inulin (AIn) (two substitution degrees each) by spray-drying, and a 2 2 statistical factorial design was ...