Browsing by Title Artículos de revistas

Now showing items 774-793 of 2801

    • Distortion isomerism in ferrous thiourea complexes-II(1) thermodynamics and kinetics 
      Latorre, R.; Costamagna, J.; Frank, E.; Abeledo, C.; Frankel, R. (1979)
      Mössbauer spectroscopy as a function of temperature of Fe(II)(N,N′-dicyclohexyl-thiourea)6(ClO4)2(FeDCTU) shows the existence of two isomeric forms A and B which coexist in the temperature range 200 < T < 300 K. The relative ...
    • Distribución del carbono en residuos orgánicos y su interacción con elementos metálicos, nutrientes y/o ... 
      Borie B., Gilda; Peirano V., Pedro; Espinoza González, Jeannette; Zunino Venegas, Hugo; Aguilera S., S. María (Sociedad Chilena de la Ciencia del Suelo, 2000)
      Universalmente se hace necesario y urgente implementar políticas de uso de residuos orgánicos en los suelos, tanto por la necesidad de disponer de estos residuos, como también por la necesidad apremiante de recuperar el ...
    • 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 ...
    • DNA Extraction and Amplification from Contemporary Polynesian Bark-Cloth 
      Moncada, Ximena; Payacán, Claudia; Arriaza, Francisco; Lobos Camus, Sergio; Seelenfreund Hirsch, Daniela; Seelenfreund, Andrea (2013)
      Background: Paper mulberry has been used for thousands of years in Asia and Oceania for making paper and bark-cloth, respectively. Museums around the world hold valuable collections of Polynesian bark-cloth. Genetic ...
    • DNA isolation and AFLP fingerprinting of nectarine and peach varieties (Prunus persica) 
      Manubens, Augusto; Lobos, S.; Jadue, Yael; Toro, Manuel; Messina, Rosa; Lladser Prado, Manuel; Seelenfreund Hirsch, Daniela (Kluwr Academic Publisher, 1999)
      Traditional identification of peach and nectarine varieties relies on the assessment of agronomic traits of the adult plant. This leads to a significant delay of time, constraints to breeders in the surveillance of germplasm ...
    • DNA staining method based on formazan precipitation induced by blue light exposure 
      Paredes, Aaron J.; Alfaro Valdés, Hilda M.; Wilson Moya, Christian (Journal of Visualized Experiments, 2018)
      DNA staining methods are very important for biomedical research. We designed a simple method that allows DNA visualization to the naked eye by the formation of a colored precipitate. It works by soaking the acrylamide or ...
    • DNA, Cell Wall and General Oxidative Damage Underlie the Tellurite/Cefotaxime Synergistic Effect in Escherichia ... 
      Molina Quiroz, Roberto C.; Loyola, David E.; Muñoz Villagrán, Claudia; Quatrini, Raquel; Vásquez, Claudio C.; Pérez Donoso, José (PLoS ONE 8(11): e79499, 2013)
      The constant emergence of antibiotic multi-resistant pathogens is a concern worldwide. An alternative for bacterial treatment using nM concentrations of tellurite was recently proposed to boost antibiotic-toxicity and a ...
    • Domino inverse electron demand Diels-Alder reactions of chromones with ethyl vinyl ether 
      Heredia Moya, Jorge; Krohn, Karsten; Florke, Ulrich; Pessoa Mahana, Hernán; Weiss López, Boris; Estévez, A.; Araya Maturana, Ramiro (PERGAMON-ELSEVIER SCIENCE LTD, 2007-06-01)
      E)-Ethyl 3-(4-oxo-4H-chromen-3-yi)acrylate (3), (E)-3-(4-oxo-4H-chromen-3-yl)-2-propenenitrile (12) and their 5-hydroxy-derivatives 11 and 13 undergo alternative, solvent dependent, domino reactions with ethyl vinyl ether. ...
    • Dopamine in human follicular fluid is associated with cellular uptake and metabolism-dependent generation ... 
      Saller, Sabine; Kunz, L.; Berg, D.; Berg, U.; Lara Peñaloza, Hernán; Urra, J.; Hecht, S.; Pavlik, R.; Thaler, C.J.; Mayerhofer, A. (Oxford University Press, 2014)
      studyquestion: Is the neurotransmitter dopamine (DA) in the human ovary involved in the generation of reactive oxygen species (ROS)? summary answer: Human ovarian follicular fluid contains DA, which causes the generation ...
    • Dopamine-dependent iron toxicity in cells derived from rat hypothalamus 
      Paris Pizarro, Irmgard; Martínez Alvarado, P.; Cárdenas, S.; Pérez Pastene, C.; Graumann, Rebecca; Fuentes, P.; Olea Azar, Claudio; Caviedes Fernández, Pablo; Segura Aguilar, Juan (AMER CHEMICAL SOC, 2005-03)
      We report a new and specific mechanism for iron-mediated neurotoxicity using RCHT cells, which were derived from rat hypothalamus. RCHT cells exhibit immunofluorescent-positive markers for dopamine beta-hydroxylase and the ...
    • Dora B. Goldstein – In Memoriam 
      Israel Jacard, Yedy; Crabbe, John C.; Harris, R. Adron (WILEY-BLACKWELL, 2012)
    • Double emulsions as potential fat replacers with gallic acid and quercetin nanoemulsions in the aqueous phases 
      Silva, Wladimir; Torres Gatica, María Fernanda; Oyarzún Ampuero, Felipe; Silva Weiss, Andrea; Robert Canales, Paz; Cofrades, Susana; Giménez, Begoña (Elsevier, 2018)
      The development of fat replacers to obtain healthier/functional foods is a constant challenge. With this aim, double emulsions (DE) with a blend of olive, linseed and fish oils as oil phase were developed. To prevent the ...
    • Double emulsions with olive leaves extract as fat replacers in meat systems with high oxidative stability 
      Robert Canales, Paz; Zamorano, Marcela; Prado González, Estefanía; Silva-Weiss, Andrea; Cofrades, Susana; Giménez, Begoña (Elsevier Ltd, 2019)
      Double emulsions (DE) with a healthy oil blend as lipid phase and an olive leave extract (OLE) encapsulated in the internal aqueous phase (DE/OLE) were incorporated as fat replacers in meat systems, in order to improve ...
    • Down syndrome and Alzheimer's disease: common molecular traits beyond the amyloid precursor protein 
      Gómez, Wileidy; Morales, Rodrigo; Maracaja Coutinho, Vinicius; Parra Ortiz, Valentina; Nassif, Melissa (Impact Journals LLC, 2020)
      Alzheimer’s disease (AD) is the most prevalent type of dementia. Down syndrome (DS) is the leading genetic risk factor for Early-Onset AD, prematurely presenting the classic pathological features of the brain with AD. ...
    • Down syndrome critical region 1 gene, Rcan1, helps maintain a more fused Mitochondrial Network 
      Parra Ortíz, María Valentina; Altamirano, Francisco; Hernández Fuentes, Carolina; Tong, Dan; Kyrychenko, Victoriia; Rotter, David; Pedrozo Cibils, Zully; Hill, Joseph A.; Eisner, Verónica; Lavandero González, Sergio; Schneider, Jay W.; Rothermel, Beverly A. (Lippincott Williams & Wilkins, 2018)
      Rationale: The regulator of calcineurin 1 (RCAN1) inhibits CN (calcineurin), a Ca2+-activated protein phosphatase important in cardiac remodeling. In humans, RCAN1 is located on chromosome 21 in proximity to the Down ...
    • 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, ...
    • Drimenol: A versatile synthon for compounds with trans-drimane skeleton 
      Cortés, Manuel; Delgado, Virginia; Saitz Barría, Claudio; Armstrong, Verónica (2011)
      Several reviews have been published on sesquiterpenes, and on drimane-type sesquiterpenes, going through drimenol and related compounds among others. However, to our knowledge, this is the first review exclusively on ...
    • Drug-loaded lipid-core micelles in mucoadhesive films as a novel dosage form for buccal administration of ... 
      Chou, Wai-Houng; Galaz, Ariel; Jara, Miguel O.; Gamboa, Alexander; Morales Montecinos, Javier (MDPI, 2020)
      The aim of the study was to develop a novel buccal dosage form to transport rhodamine 123 and human insulin as models for poorly water-soluble and biological drugs, using lipid-core micelles (LCMs)-loaded mucoadhesive ...
    • Drugs dispensed at the Division of Neonatology at University Hospital in Río Cuarto, Córdoba, Argentina ... 
      Fungo, Marta Stella Maris; Vega, Elena María (Sociedad Argentina de Pediatria, 2013)
      Introduction: The objective was to analyze the number of drugs dispensed by the Pharmacy Department to the Neonatology Division, to find out if the use of these drugs is described on the package insert approved by the ...
    • Drugs in prehistory: chemical analysis of ancient human hair 
      Báez Guerrero, Hernán; Camargo Grandón, Rodrigo; Benavente, M. A.; Kintz, P.; Castro Domínguez, Mario; Cirimele, V.; Thomas, C. (ELSEVIER SCI IRELAND LTD, 2000-02-28)
      Concern about drug abuse in modem populations has led to the development of specific methods for identification of cocaine, opiates and cannabis in human hair. Drug use in prehistory can provide indirect evidence of ...