Browsing by Title Artículos de revistas

Now showing items 2336-2355 of 2801

    • Strategies of elicitation to enhance bioactive compound content in edible plant sprouts: a bibliometric study 
      Toro, María Trinidad; Ortiz Viedma, Jaime Alejandro; Becerra, José; Zapata, Nelson; Fierro, Paulo; Illanes, Marcelo; López, María Dolores (MDPI, 2021)
      Vegetable sprouts are a food source that presents high content of bioactive compounds which can also be enhanced through elicitation mechanisms. To better understand the scientific production and research trends on this ...
    • Stress and the Reproductive Axis 
      Toufexis, D.; Rivarola, M. A.; Lara Peñaloza, Hernán; Viau, V. (British Society for Neuroendocrinology, 2014)
      There exists a reciprocal relationship between the hypothalamic-pituitary-adrenal (HPA) and the hypothalamic-pituitary-gonadal (HPG) axes, wherein the activation of one affects the function of the other and vice versa. ...
    • Stress promotes development of ovarian cysts in rats - The possible role of sympathetic nerve activation 
      Paredes Vargas, Alfonso; Gálvez, Anita; Leyton Canales, Víctor; Zúñiga Aravena, Gabriel; Fiedler Temer, Jenny; Bustamante Cádiz, Diego; Lara Peñaloza, Hernán (HUMANA PRESS INC, 1998-06)
      The ovarian content of neuropeptide Y (NPY) (colocalized with NE) was significantly decreased. These results suggest that NE synthesis and its secretion are increased during this period and correlate with the increase in ...
    • Stress promotes development of ovarian cysts in rats: The possible role of sympathetic nerve activation 
      Paredes, Alfonso; Gálvez, Anita; Leyton, Victor; Aravena, Gabriel; Fiedler Temer, Jenny; Bustamante, Diego; Lara Peñaloza, Hernán (1998)
      Activation of the sympathetic innervation precedes the induction of polycystic ovaries in rats given estradiol valerate (EV). The mechanism of induction by EV may thus involve both direct and neurogenic components. We ...
    • Stressing out the ER: A role of the unfolded protein response in prion-related disorders 
      Hetz Flores, Claudio; Soto, Claudio (2006)
      Transmissible Spongiform Encephalopathies are fatal and infectious neurodegenerative diseases characterized by extensive neuronal apoptosis and the accumulation of an abnormally folded form of the cellular prion protein ...
    • StructRNAfinder: an automated pipeline and web server for RNA families prediction 
      Arias Carrasco, Raúl; Vásquez Moran, Yessenia; Nakaya, Helder I.; Maracaja Coutinho, Vinicius (BIOMED Central Ltd., 2018)
      Background: The function of many noncoding RNAs (ncRNAs) depend upon their secondary structures. Over the last decades, several methodologies have been developed to predict such structures or to use them to functionally ...
    • Structural and photophysical properties of [(CO) 
      Gallardo, Hector; Cepeda-Plaza, Marjorie; Nonell, Santi; Günther Sapunar, Germán; Chamorro, Eduardo; Pizarro, Nancy; Vega, Andrés (Elsevier Ltd, 2015)
      © 2015 Elsevier Ltd. All rights reserved.The multimetallic complex [[(CO)<inf>3</inf>(phen)Re(μ-Br)Re(phen)(CO)<inf>3</inf>][(CO)<inf>3</inf>Re(μ-Br)<inf>3</inf>Re(CO)<i ...
    • Structural and photophysical properties of [(CO)(3)(phen) Re(mu-Br)Re(phen)(CO)(3)](+)[(CO)(3)(+)[Re(mu-B ... 
      Gallardo, Héctor; Cepeda Plaza, Marjorie; Nonell, Santi; Günther Sapunar, Germán; Chamorro, Eduardo; Pizarro, Nancy; Vega, Andrés (Elsevier, 2015)
      The multimetallic complex [[(CO)(3)(phen) Re(mu-Br)Re(phen)(CO)(3)][(CO)(3)[Re(mu-Br)(3)Re(CO)(3)]]center dot CH2Cl2 was prepared by direct reaction of (Re(CO)(3)(THF)Br)(2) (THF: tetrahydrofuran) and 1,10-phenanthroline ...
    • Structural changes in DODAC unilamellar liposomes by addition of sucrose esters monitored by using fluorescent ... 
      Lemp Miranda, Else; Zanocco Loyola, Antonio; Günther Sapunar, Germán (ELSEVIER SCIENCE BV, 2003-11-24)
      The effect of the incorporation of the non-ionic surfactant sucrose palmitate in dioctadecyldimethylammonium chloride(DODAC) large unilamellar vesicles was studies by using several spectroscopic techniques. Significant ...
    • Structural effects on the reactivity 1,4-dihydropyridines with alkylperoxyl radicals and ABTS radical cation 
      Yáñez Soto, Claudia; Lápez Alarcón, Camilo Ignacio; Camargo Grandón, Rodrigo; Valenzuela, V.; Squella Serrano, Juan; Núñez Vergara, Luis (PERGAMON-ELSEVIER SCIENCE, 2004-05-01)
      A series of eight commercial C-4 substituted 1,4-dihydropyridines and other synthesized related compounds were tested for direct potential scavenger effect towards alkylperoxyl radicals and ABTS radical cation in aqueous ...
    • Structural Effects upon Catalysis by Cationic Micelles 
      Bunton, C. A.; Robinson, L.; Sepulveda, L. (1970)
      The catalytic efficiencies of phenyl- and 2,4-dimethoxyphenylcetyldimethylammonium bromides (CPDA and CDPDA) are greater than that of cetyltrimethylammonium bromide (CTABr) for the spontaneous hydrolyses of the dianions ...
    • Structural elucidation and antimicrobial characterization of novel diterpenoids from Fabiana densa var. ramulosa 
      Quaglio, Deborah; Corradi, Silvia; Erazo Giuffra, Silvia; Vergine, Valeria; Berardozzi, Simone; Sciubba, Fabio; Cappiello, Floriana; Crestoni, María Elisa; Ascenzioni, Fiorentina; Imperi, Francesco; Delle Monache, Franco; Mori, Mattia; Loffredo, Maria Rosa; Ghirga, Francesca; Casciaro, Bruno; Botta, Bruno; Mangoni, Maria Luisa (American Chemical Society, 2020)
      Novel diterpenoids were isolated from the extracts of Fabiana densa var. ramulosa and found to display a selective activity against Gram-positive bacterial strains with negligible cytotoxicity toward human keratinocytes. ...
    • Structural elucidation of bioactive principles in floral extracts of german chamomille (matricaria recutita L.) 
      Buono Core, Gonzalo; Vanessa Núñez, M.; Lucero, Andrea; Vargas M., Robinson; Jullian Matthaei, Carolina (Sociedad Chilena de Quimica, 2011)
      In this work, bioactive compounds present in flower heads of German Chamomille, were extracted and isolated in pure forms by chromatographic techniques. These compounds, spiroketal enol ethers, present in both isomeric ...
    • Structural re-arrangement in two hexanuclear CuII complexes: from a spin frustrated trigonal prism to a ... 
      Cañón Mancisidor, Walter Alberto; Gómez García, Carlos J.; Mínguez Espallargas, Guillermo; Vega, Andrés; Spodine Spiridonova, Evgenia; Venegas Yazigi, Diego; Coronado, Eugenio (The Royal Society of Chemistry, 2014)
      The addition of water to a chloroform solution of the Cu6 trigonal prism complex [Cu6(U6F)(U2OH)(U3OCH3)2(U2OCH3)2(3,5-Me2pz)6] (1) (3,5-Me2pz- = 3,5-dimethylpyrazolate) results in the formation of the Cu6 planar hexagonal ...
    • Structural symmetry breaking of silicon-containing poly(amide-imide) oligomers and its relation to electrical ... 
      González Henríquez, Carmen M.; Tagle, Luis H.; Terraza, Claudio A.; Barriga González, Andrés; Volkmann, Ulrich G.; Cabrera, Alejandro L.; Ramos Moorec, Esteban; Pavez Moreno, Maximiliano (2012)
      Optically active poly(amide-imide) oligomers were synthesized by direct polycondensation between an aromatic diamine and a dicarboxylic acid both containing a diphenylsilylene unit. The reaction was carried out using ...
    • Structural versatility of 3d-Ce-III heterometallic coordination polymers using Co-II or Cu-II 
      Moraga Cruz, Carlos; Spodine Spiridonova, Evgenia; Audebrand, Nathalie; Venegas Yazigi, Diego; Paredes García, Verónica (American Chemical Society, 2018)
      In the present work, we report the synthesis and characterization of two new heterometallic coordination polymers based on Ce-III and containing Co-II or Cu-II cations, assembled by the bifunctional ligand 1H-imidazole-4 ...
    • Structuration in the Interface of Direct and Reversed Micelles of Sucrose Esters, Studied by Fluorescent Techniques 
      Sandoval Altamirano, Catalina Paz; Ortega Moreno, Anakenna Dennis; Sánchez, Susana A.; Morales Montecinos, Javier; Günther Sapunar, Germán (Public Library of Science, 2015)
      Reactors found in nature can be described as micro-heterogeneous systems, where media involved in each micro-environment can behave in a markedly different way compared with the properties of the bulk solution. The ...
    • Structure and aggregation number of a lyotropic liquid crystal: A fluorescence quenching and molecular ... 
      Montecinos, R.; Ahumada, H.; Martínez, R.; Olea Carrasco, Floreal; Araya Maturana, Ramiro; Aliste, M. P.; Tieleman, D. P.; Weiss López, Boris (AMER CHEMICAL SOC, 2004-07-06)
      The structure and aggregation number of a discotic lyotropic liquid crystal, prepared from tetradecyltrimethylammonium chloride (TDTMACI)/decanol (DeOH)/NaCI/H2O, have been examined using fluorescence quenching of pyrene ...
    • Structure and bonding in the hydrothermally synthesized copper(I) complex Cu4(μ2-Cl)4(BIPY)2 
      Moreno, Yanko; Spodine Spiridonova, Evgenia; Vega, Andrés; Saillard, Jean Yves (Elsevier S.A., 2003)
      The title compound corresponds to a molecular product of the hydrothermal reaction of CuCl2, Zn, and BIPY (BIPY=2,2′-bipyridine) in the presence of phosphoric acid. The structure of the neutral complex Cu 4(μ2-Cl)4(BIPY)2 ...
    • Structure and development of the egg of the glossiphoniid leech Theromyzon rude: Reorganization of the ... 
      Fernández, Juan; Olea, Nancy; Téllez, Verónica; Matte, Cecilia (1990)
      Reorganization of the fertilized egg during completion of the first meiotic division was studied in the glossiphoniid leech Theromyzon rude. Rotation of the meiotic spindle, presumably as a result of changes in the length ...