Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions

Now showing items 4581-4600 of 5089

    • Soil organic matter-metal interactions in Chilean volcanic soils under different agronomic management 
      Heredia, Wendy; Peirano V., Pedro; Borie B., Gilda; Aguilera S., S. María (MARCEL DEKKER INC, 2002)
      The organic matter existing in volcanic soils must be investigated not only in quantity, but also in quality in order to understand its role in soils and thus ensure adequate levels of stable organic polymers contributing ...
    • Organic carbon balance in Chilean volcanic soils after human intrusion and under different management practices 
      Heredia, Wendy; Peirano V., Pedro; Borie B., Gilda; Zunino Venegas, Hugo; Aguilera S., S. María (TAYLOR & FRANCIS AS, 2007)
      It is well known that humified soil organic matter ( SOM) plays a central role in soil fertility due to its chemical and physical properties, especially by sustaining soil biological and related ecological equilibrium. ...
    • Chemical characterization of sewage sludges in chile and their potential utilization as amendment to reclaim ... 
      Aguilera S., S. María; Borie B., Gilda; Peirano V., Pedro; Rodríguez Rojas, Manuel; Grez M., Iván; Zunino Venegas, Hugo (TAYLOR & FRANCIS INC, 2007)
      Soils open for forestation in Chile are characterized by their very low organic carbon content; therefore, new forest plantations, needed to restore soil ecological equilibria, are scarcely developed. Stabilized sewage ...
    • ANTIOXIDANT PROPERTIES OF Rosmarinus officinalis AND ITS EFFECTS ON XENOBIOTIC BIOTRANSFORMATION 
      Letelier Muñoz, María Eugenia; Terán, A.; Barra, M. A.; Aracena Parks, Paula (Jose L. Martinez, 2009-11-30)
      Rosmarinus officinalis (rosemary) extracts display antioxidant properties mainly due to the presence of polyphenols. These properties have yet to be systematically studied in biological systems. In this study, we used rat ...
    • Preliminary studies on antioxidant and anti-cataract activities of Cheilanthes glauca (Cav.) Mett. through ... 
      Pastene, Edgar; Avello, Marcia; Letelier Muñoz, María Eugenia; Sanzana, Elizabeth; Vega, Mario; González, Margarita (The MathWorks Automotive Advisory Board, 2007)
      Aqueous extracts of Cheilanthes glauca (Cav.) Mett., (Adiantaceae), commonly named Doradilla, are often used in folk medicine as anti-inflammatory and for diabetes treatment. In the present study the antioxidant capacity ...
    • DPPH and oxygen free radicals as pro-oxidant of biomolecules 
      Letelier Muñoz, María Eugenia; Molina Berríos, Alfredo Enrique; Cortés Troncoso, Juan; Jara Sandoval, José; Holst, Marianne; Palma, Karina; Montoya, Margarita; Miranda, Dante; González Lira, Víctor (PERGAMON-ELSEVIER SCIENCE LTD, 2008-03)
      Numerous investigations exist about the alterations that oxygen free radicals can provoke on biomolecules; these modifications can be prevented and/or reversed by different antioxidants agents. On the other hand, ...
    • Distribution of urocanic acid isomers between aqueous solutions and n-octanol, liposomes or bovine serum albumin 
      Campos, Ana M.; Cárcamo, Carlos; Silva, Eduardo; García, Sandra; Lemp Miranda, Else; Alarcón, Emilio; Edwards, Ana María; Günther Sapunar, Germán; Lissi Gervaso, Eduardo A. (ELSEVIER, 2008-01-30)
      The distribution of urocanic acid (UCA) isomers between aqueous solutions and n-octanol, egg yolk phosphatidylcholine (eggPC) liposomes or bovine serum albumin (BSA) has been evaluated. Regarding its partitioning between ...
    • Simultaneous determination of glutathione and glutathione disulfide in an acid extract of plant shoot and ... 
      Mendoza, Jorge; Garrido, Tatiana; Riveros, Raúl; González, Cecilia; Parada Aliste, José (SOC CHILENA QUIMICA, 2008-09)
      This study describes the fast and simultaneous determination of glutathione and glutathione disulfide by Capillary Zone Electrophoresis in plant extracts of shoot and root of tomato plants. Frequent use of acidic precipitation ...
    • Photosensitized generation of singlet molecular oxygen by aryloxazinones 
      Lemp Miranda, Else; Cañete, Alvaro; Günther Sapunar, Germán; Pizarro, Nancy; Zanocco Loyola, Antonio (ELSEVIER, 2008-09-25)
      The photophysical properties, the capacity to produce singlet molecular oxygen by sensitization and the photostability of a series of 20 aryloxazinones and one quinoxalinone have been evaluated using a combination of methods ...
    • Novel examples of hybrid organic-inorganic solids based on V4O124- building blocks 
      Le Fur, Eric; Pivan, J. Y.; Ushak, S.; Venegas Yazigi, Diego; Spodine Spiridonova, Evgenia (Elsevier, 2008)
      New hybrid organic/inorganic copper oxovanadium compounds of composition [Cu(dpa)(2)](4)V4O12 (1), Cu-2(bipy)(2)V4O12 (2), and Cu-2(bipy)(2)V6O17 (3), which crystallize in the monoclinic 1, 2 and triclinic 3 symmetry, ...
    • Caracterización del aceite de coquito de palma chilena (Jubaea chilensis) 
      Masson Salaué, Lilia; Camilo Manríquez, Conrado; Torija, M. Esperanza (INST GRASA SUS DERIVADOS, 2008-01)
      Se analizan las características generales del coquito de palma chilena y se estudia con detalle la composición de su aceite. Con este objetivo, se analizan 4 lotes de coquitos procedentes de las dos regiones de Chile ...
    • Microtubule proteins and their post-translational forms in the cerebrospinal fluid of patients with paraparesis ... 
      Maldonado, Horacio; Ortiz Riaño, Emilio Javier; Krause, Bernardo; Barriga, Andrés; Medina, Fernando; Pando, M. Elsa; Alberti, Carolina; Kettlun, Ana María; Collados, Lucía; García Nannig, Lorena; Cartier Rovirosa, Luis; Valenzuela Pedevila, María Antonieta (SOC BIOLGIA CHILE, 2008)
      HTLV-I-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is characterized by axonal degeneration of the corticospinal tracts. The specific requirements for transport of proteins and organelles to the distal ...
    • Characterization, phase-solubility, and molecular modeling of inclusion complex of 5-nitroindazole derivative ... 
      Jullian Matthaei, Carolina; Morales Montecinos, Javier; Zapata Torres, Gerald Amilcar; Aguilera, Benjamín; Rodríguez Borges, Jorge; Arán, Vicente J.; Olea Azar, Claudio (PERGAMON-ELSEVIER SCIENCE LTD, 2008-05-01)
      The slightly water-soluble 5-nitroindazole derivative (5-NI) and its inclusion with either beta-cyclodextrin (beta CD) or Heptakis (2,6-di-O-methyl)-beta- cyclodextrin (DM beta CD) were investigated. The stoichiometric ...
    • Consumo de antidepresivos en Chile entre 1992 y 2004 
      Jirón Aliste, Marcela; Machado, Marcio; Ruiz, Inés (SOC MEDICA SANTIAGO, 2008-09)
      Background: Data from the Ministry of Health show that in Chile in 2004, 17% of the population had some form of depression and mood disorders are the tenth cause of disability-adjusted life years (DALY) loss. Aim: To ...
    • Investigation on extraction rate of lanthanides with extractant-impregnated microcapsule 
      Kamio, Eiji; Fujiwara, Yasuhide; Matsumoto, Michiaki; Valenzuela, Fernando; Kondo, Kazuo (ELSEVIER, 2008-05-15)
      Extraction of lanthanum, samarium and erbium into a microcapsule containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (EHPNA) is studied. The extraction kinetic model used to predict uptake curves is based on the ...
    • Quantum-chemical, NMR and X-ray diffraction studies on (±)-1-[3,4-(methylenedioxy)phenyl]-2-methylaminopropane 
      Zapata Torres, Gerald Amilcar; Cassels Niven, Bruce; Parra Mouchet, Julia; Mascarenhas, Yvonne P.; Ellena, Javier; De Araujo, A. S. (Elsevier Inc, 2008-06)
      Time-averaged conformations of ( )-1-[3,4-(methylenedioxy)phenyl]-2-methylaminopropane hydrochloride (MDMA, ‘‘ecstasy’’) in D2O, and of its free base and trifluoroacetate in CDCl3, were deduced from their 1H NMR spectra ...
    • Platinum(II) metal complexes as potential anti-Trypanosoma cruzi agents 
      Vieites, Marisol; Otero, Lucía; Santos, Diego; Toloza, Jeannette; Figueroa, Roberto; Norambuena, Ester; Olea Azar, Claudio; Aguirre, Gabriela; Cerecetto, Hugo; González, Mercedes; Morello Casté, Antonio; Maya Arango, Juan; Garat, Beatriz; Gambino, Dinorah (ELSEVIER SCIENCE INC, 2008-05)
      In the search for new therapeutic tools against Chagas’ disease (American Trypanosomiasis) two series of new platinum(II) complexes with bioactive 5-nitrofuryl containing thiosemicarbazones as ligands were synthesized, ...
    • Potent in vitro anti-Trypanosoma cruzi activity of pyridine-2-thiol N-oxide metal complexes having an ... 
      Vieites, Marisol; Smircich, Pablo; Parajón Costa, Beatriz; Rodríguez Borges, Jorge; Galaz, Verónica; Olea Azar, Claudio; Otero, Lucía; Aguirre, Gabriela; Cerecetto, Hugo; González, Mercedes; Gómez Barrio, Alicia; Garat, Beatriz; Gambino, Dinorah (SPRINGER, 2008-06)
      In the search for new therapeutic tools against Chagas disease (American trypanosomiasis) palladium and platinum complexes of the bioactive ligand pyridine-2- thiol N-oxide were exhaustively characterized and evaluated in ...
    • Senescence, Apoptosis or Autophagy? 
      Vicencio, José Miguel; Galluzzi, Lorenzo; Tajeddine, Nicolás; Ortiz, Carla; Criollo Céspedes, Alfredo; Tasdemir, E.; Morselli, Eugenia; Ben Younes, Amena; Chiara Maiuri, María; Lavandero González, Sergio; Kroemer, Guido (S. Karger AG, 2008)
      Many features of aging result from the incapacity of cells to adapt to stress conditions. When damage accumulates irreversibly, mitotic cells from renewable tissues rely on either of two mechanisms to avoid replication. ...
    • Catecholamine uptake, storage, and regulated release by ovarian granulosa cells 
      Greiner, Monika; Paredes Vargas, Alfonso; Rey Ares, Verónica; Saller, Sabine; Mayerhofer, Artur; Lara Peñaloza, Hernán (ENDOCRINE SOC, 2008-10)
      Catecholamines present in the mammalian ovary are involved in many normal aspects of ovarian functions, including initial follicle growth, steroidogenesis, and pathological states such as polycystic ovary syndrome. Sympathetic ...