Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions

Now showing items 1801-1820 of 5114

    • Quality of UVR exposure for different biological systems along a latitudinal gradient 
      Vernet, Maria; Diaz, Susana B.; Fuenzalida, Humberto A.; Camilion, Carolina; Booth, Charles R.; Cabrera, Sergio; Casiccia, Claudio; Deferrari, Guillermo; Lovengreen, Charlotte; Paladini, Alejandro; Pedroni, Jorge; Rosales, Alejandro; Zagarese, Horacio E. (2009)
      The exposure of organisms to ultraviolet radiation (UVR) is characterized by the climatology (annual cycle) and the variance (anomalies) of biologically-weighted irradiances at eight geographical locations in austral South ...
    • Adsorption of glyphosate on variable-charge, volcanic ash-derived soils 
      Cáceres-Jensen, L.; Gan, J.; Báez, M.; Fuentes, R.; Escudey, M. (2009)
      Glyphosate (N-phosphonometylglycine) is widely used due to its broad spectrum of activity and nonselective mode of action. In Chile it is the most used herbicide, but its adsorption behavior in the abundant and widespread ...
    • Glassy carbon electrodes modified with CNT dispersed in chitosan: Analytical applications for sensing ... 
      Arias, Paulina; Ferreyra, Nancy F.; Rivas, Gustavo A.; Bollo Dragnic, Soledad (Elsevier, 2009)
      In this work we report the optimization of a chitosan (CHI) and carbon nanotubes (CNT) modified electrode, CNT-CHI, to study the dsDNA interaction with methylene blue (MB), a well-known DNA intercalator. The analytical ...
    • Gene expression and chromosomal location for susceptibility to Sjögren's syndrome 
      Pérez, Paola; Anaya, Juan Manuel; Aguilera, Sergio; Urzúa Tobar, Ulises; Munroe, David; Molina, Claudio; Hermoso Ramello, Marcela; Cherry, James Michael; Alliende, Cecilia; Olea, Nancy; Ruiz-Narváez, Edward; González Burgos, María Julieta (2009)
      Primary Sjögren's syndrome (SS) is a chronic inflammatory autoimmune disease affecting mainly the exocrine glands. Its physio-pathology is poorly understood and most of the knowledge has been related to the inflammatory ...
    • Reactivity of C4-indolyl substituted 1,4-dihydropyridines toward superoxide anion (O2O) in dimethylsulfoxide 
      Salazar, Ricardo; Navarrete Encina, Patricio; Squella Serrano, Juan; Camargo, C.; Núñez Vergara, Luis (2009)
      Reactivity of two new C4-indolyl substituted 1,4-dihydropyridines (1,4-DHPs) toward superoxide anion (O2-) in dimethylsulfoxide (DMSO) is reported. Reactivity was followed by electrochemical and spectroscopic techniques. ...
    • Study of the molecular recognition of A Neutral Carrier used as All-Solid-State of Electrode to nitrate ... 
      Arada Pérez, María de los Angeles; Yazdani-Pedram Zobeiri, Mehrdad; Marín, Jorge; Planche, Alejandro Speck (2009)
      In this work an ESI is valued of the plasticized liquid membranes with 1-furoyl 3,3 diethylthiourea as ionophore (neutral portadore), tributyl phosphate as plasticizer and poly(vinyl chloride) as matrix on a sensitive ...
    • Characterization of a neutral polysaccharide with antioxidant capacity from red wine 
      Aguirre, M.; Isaacs, M.; Matsuhiro, B.; Mendoza, L.; Zúñiga, E. (2009)
      A neutral fraction (PS-SI) (0.3 g/L) with MW of 74 kDa, which contained galactose, arabinose, mannose, and glucose in the molar ratio of 1.0:0.6:0.4:0.2 was obtained by treatment of the whole polysaccharide extracted from ...
    • Synthesis, structure and electrochemical properties of the cationic complex tris-(imidazolidine-1,10-phen ... 
      García, Camilo; Villagra, Diego; Caruso, Francesco; Rossi, Miriam; Matsuhiro, Betty; Mendoza, Leonora; Aguirre, María J.; Isaacs, Mauricio (2009)
      The complex [FeII(Imz-phen)3](PF6)2, (Imz-phen = imidazolidine-[4,5-f]-1,10-phenanthroline) has been prepared and characterized using X-ray diffraction, UV–vis and IR spectroscopy, elemental analysis, fast atomic bombardment ...
    • Effects of long-term adrenalectomy on apoptosis and neuroprotection in the rat hippocampus 
      Andrés, Sergio; Cárdenas, Sergio; Lecocq Parra, Claudio; Bravo, Javier; Greiner, Monika; Rojas, Paulina; Morales, Paola; Lara Peñaloza, Hernán; Fiedler Temer, Jenny (2006)
      Reduction in corticosterone by acute adrenalectomy (5 d) promotes apoptosis in dentate gyrus (DG) granular neurons, an effect concomitant with variations in the expression of the Bcl-2 gene family implicated in apoptotic ...
    • Characterization of chemical kinetics in membrane-based liquid-liquid extraction of molybdenum(VI) from ... 
      Valdés, H.; Romero, J.; Sanchez, J.; Bocquet, S.; Rios, G. M.; Valenzuela, F. J. (2009)
      This study aims to describe the mass transfer in a membrane-based solvent extraction system for the extraction of molybdenum(VI) from aqueous solutions, identifying chemical kinetics of the complex formation at the interface. ...
    • Chemical changes during the chilled storage of chilean jack mackerel (Trachurus murphyi): effect of a ... 
      Quitral, Vilma; Donoso, María Luisa; Ortiz, Jaime; Herrera, María Victoria; Toledo Araya, Héctor; Aubourg, Santiago (Academic Press, 2009)
      Chilean jack mackerel (Trachurus murphyi) is an underutilised medium-fat fish species, captured in large volumes but commercialised in the fish meal and surimi industries. This study provides a first approach including a ...
    • Photoreduction of oxoisoaporphines by amines: Laser flash and steady-state photolysis, pulse radiolysis, ... 
      De la Fuente, Julio; Aliaga, Christian; Poblete, Cristian; Zapata, Gerald; Jullian Matthaei, Carolina; Saitz Barría, Claudio; Cañete, Alvaro; Kciuk, Gabriel; Sobarzo Sánchez, Eduardo; Bobrowski, Krzysztof (2009)
      Photoreduction of oxoisoaporphine (OIA) (l-aza-benzo-[de]anthracen-7-one) and its 5-methoxy (5-MeOOIA) derivative by selected amines (two non-a-hydrogen-donating amines (l,4-diaza[2.2.2]-bicyclooctane (DABCO) and ...
    • Crystal structure and magnetic properties of a new chiral manganese(II) three-dimensional framework: ... 
      Paredes García, Verónica; Vega, Andrés; Novak, Miguel A.; Vaz, Maria G.F.; Souza, Denise A.; Venegas Yazigi, Diego; Spodine Spiridonova, Evgenia (2009)
      A structural and magnetic characterization of a trinuclear chiral Mn(ll) formate three-dimensional framework exhibiting a triangular arrangement is presented. Compound Na3[Mn3(HCOO)9] was obtained by solvothermal synthesis ...
    • Effect of photon flux density and temperature on the production of halogenated monoterpenes by Plocamium ... 
      Palma, Rodrigo; Edding, Mario; Rovirosa, Juana; San Martín Barrientos, Aurelio; Argandoña, Victor (Verlag der Zeitschrift fur Naturforschung, 2004)
      The effect of different photon flux densities (PFD) and temperatures on the relative growth rate (RGR) and the concentration of three halogenated monoterpenes in samples of Plocamium cartilagineum L.( Dixon), a marine alga ...
    • Molecular encapsulation of 5-nitroindazole derivatives in 2,6-dimethyl-β-cyclodextrin: Electrochemical and ... 
      Pérez Cruz, Fernanda; Jullian Matthaei, Carolina; Rodríguez Borges, Jorge; Arán, Vicente; Olea Azar, Claudio (2009)
      Four different 5-nitroindazole derivatives (1-4) and its inclusion with Heptakis(2,6-di-O-methyl)-beta-cyclodextrin (DM beta CD) were investigated. The stoichiometric ratios and stability constants describing the extent ...
    • Rancidity development during the frozen storage of farmed coho salmon (Oncorhynchus kisutch): effect of ... 
      Ortiz, Jaime; Larraín, M. Angélica; Vivanco, Juan; Aubourg, Santiago (2009)
      A commercial diet including synthetic antioxidants (BHT-ethoxyquin mixture) (diet I) was provided to coho salmon (Oncorhynchus kisutch) in parallel with two diets including natural antioxidants (tocopherol isomers rich ...
    • Cu(H(2)btec)(bipy)](infinity): a novel metal organic framework (MOF) as heterogeneous catalyst for the ... 
      Brown, Kareen; Zolezzi Carvallo, Santiago; Aguirre, Pedro; Venegas Yazigi, Diego; Paredes García, Verónica; Baggio, Ricardo; Novak, Miguel; Spodine Spiridonova, Evgenia (Royal Society of Chemistry, 2009)
      A new extended metal-organic framework [Cu(H(2)btec)(bipy)](infinity) (1) (H(4)btec=1,2,4,5-benzenetetracarboxylic acid; bipy= 2,2'-bipyridine) has been hydrothermally synthesized. Violet crystals are formed in a monoclinic ...
    • Conjugation of Kahalalide F with gold nanoparticles to enhance in vitro antitumoral activity 
      Hosta, Leticia; Pla-Roca, Mateu; Arbiol, Jordi; López Iglesias, Carmen; Samitier, Josep; Cruz, Luis; Kogan Bocian, Marcelo; Albericio, Fernando (2009)
      Two Cys-containing analogues of the anticancer drug Kahalalide F are synthesized and conjugated to 20 and 40 nm gold nanoparticles (GNPs). The resulting complexes are characterized by different analytical techniques to ...
    • In vitro and in vivo antitrypanosomatid activity of 5-nitroindazoles 
      Boiani, Lucia; Gerpe, Alejandra; Arán, Vicente; Torres de Ortiz, Susana; Serna, Elva; Vera de Bilbao, Ninfa; Sanabria, Luis; Yaluff, Gloria; Nakayama, Héctor; Rojas de Arias, Antonieta; Maya Arango, Juan; Morello, J.; Cerecetto, Hugo; González, Mercedes (2009)
      Previously, we have identified a series of 5-nitroindazoles with good antiprotozoal activities, against Trypanosoma cruzi epimastigotes and Trichomonas vaginalis. Most of them have shown very low unspecific toxicity on ...
    • Study of 5-nitroindazoles' anti-Trypanosoma cruzi mode of action: Electrochemical behaviour and ESR ... 
      Rodríguez, Jorge; Gerpe, Alejandra; Aguirre, Gabriela; Kemmerling Weis, Ulrike; Piro, Oscar; Arán, Vicente; Maya Arango, Juan; Olea Azar, Claudio; González, Mercedes; Cerecetto, Hugo (2009)
      New indazole derivatives have been developed to know about structural requirements for adequate anti-Trypanosoma cruzi activity. In relation to position 1 of indazole ring, we have observed that a butylaminopentyl substituent ...