Browsing by Title Artículos de revistas

Now showing items 443-462 of 2801

    • La ciencia química en Chile y sus grupos de investigación. Período 1987 - 1992 
      Schalscha B., Eduardo (Sociedad Chilena de Química, 1993)
      Este documento da una visión general del estado de esta disciplina, el que se elaboró a partir de la información solicitada a los investigadores del sistema universitario, estableciendo los Grupos de Investigación, sus ...
    • Ciencia, evolución y ética: de la herencia biológica a la herencia cultural 
      Sapag Hagar, Mario (Academia de Estudios Prof. Alfoso Leng, 1991)
      La evolución: un gran proceso creador y unificador. Los sistemas basados en grandes ideas unificadoras suelen asociarse, conciente o inconcientemente, con pensamientos o creencias acerca del destino humano y de su origen. ...
    • Ciencias para el futuro: retos y oportunidades de la investigación en la Universidad de Chile en las próximas ... 
      Lavandero González, Sergio (2022)
    • Cinética diferencial de cobre y zinc con zincón en un sistema FIA/Flujo interrumpido. Determinación de ... 
      Richter Duk, Pablo; Toral Ponce, María; Tapia, A. Eugenia; Ubilla, Claudia; Bunster, Mauricio (Sociedad Chilena de Química, 1996)
      Se propone un método de análisis por inyección en flujo (FIA) con flujo interrumpido para la determinación simultánea de cobre y zinc. El método se basa en las diferentes velocidades en que se produce la reacción entre ...
    • Circulating vascular cell adhesion molecule-1 (sVCAM-1) is associated with left atrial remodeling in ... 
      Contreras Briceño, Felipe Andrés; Herrera, Sebastián; Vega Adauy, Julián; Salinas, Manuel; Ocaranza, María Paz; Jalil, Jorge E.; Mandiola, Jorge; Garcia Nannig, Lorena del Pilar; Chiong Lay, Mario Martin; Castro, Pablo F.; Lavandero González, Sergio Alejandro; Gabrielli, Luigi (Frontiers Media, 2021)
      An increased risk of atrial fibrillation (AF) has been demonstrated in high-performance athletes. Soluble vascular adhesion molecule-1 (sVCAM-1), a biomarker involved in inflammation and cardiac remodeling, is associated ...
    • Citrus limon seedlings without functional chloroplasts are unable to induce phenylalanine ammonia-lyase in ... 
      Prieto, Humberto; Chiong Lay, Mario; Garrido, Jorge; Seelenfreund Hirsch, Daniela; Quaas, Alex; Pérez Roepke, Luz María (GUSTAV FISCHER VERLAG, 1997-05)
      A light-dependent bleaching of plastids was induced in lemon seedlings through cultivation in the presence of the herbicide Norfluorazon (NFZ). Also, etiolated seedlings were obtained by cultivation under continuous dark ...
    • Clarification of purple cactus pear juice using microfiltration membranes to obtain a solution of betalain pigments 
      Vergara, Cristina; Cancino-Madariaga, Beatriz; Ramírez-Salvo, Andrés; Sáenz Hernández, Carmen Luisa; Robert Canales, Paz; Lutz, Mariane (Instituto de Tecnologia de Alimentos - ITAL, 2015)
      Betalains are fruit pigments possessing health-giving properties. To isolate the pigments, the juice must be separated from the fruit matrix, which contains biopolymers. The aim of this study was to clarify cactus pear ...
    • Clean singlet oxygen production by a Re 
      Spada, Ramiro M.; Cepeda-Plaza, Marjorie; Gómez, María L.; Günther Sapunar, Germán; Jaque, Pablo; Pizarro, Nancy; Palacios, Rodrigo E.; Vega, Andrés (American Chemical Society, 2015)
      © 2015 American Chemical Society.Rhenium complexes are versatile molecular building blocks whose tunable photophysical properties are useful in diverse opto-related applications. Herein we report the synthesis and ...
    • Clean Singlet Oxygen Production by a ReI Complex Embedded in a Flexible Self-Standing Polymeric Silsesquioxane Film 
      Spada, Ramiro M.; Cepeda Plaza, Marjorie; Gómez, María L.; Günther Sapunar, Germán; Jaque, Pablo; Pizarro, Nancy; Palacios, Rodrigo E.; Vega, Andrés (American Chemical Society, 2015)
      Rhenium complexes are versatile molecular building blocks whose tunable photophysical properties are useful in diverse opto-related applications. Herein we report the synthesis and characterization of a novel ReI ...
    • Cloning and chromosomal localization of the gene coding for human protein kinase CK1 
      Tapia, Claudio; Featherstone, Terence; Gómez, Claudio; Taillon-Miller, Patricia; Allende, Catherine C.; Allende, Jorge E. (1994)
      A cDNA clone coding for human protein kinase CK1 (casein kinase 1) has been isolated and sequenced demonstrating that it corresponds to a homolog of the CK1α form found in bovine brain. The derived amino acid sequence of ...
    • Cloning and functional characterization of the gene encoding the transcription factor Ace1 in the basidiomycete ... 
      Polanco, Rubén; Canessa, Paulo; Rivas, Alexis; Larrondo, Luis F.; Lobos Camus, Sergio; Vicuña, Rafael (SOC BIOLGIA CHILE, 2006)
      In this report we describe the isolation and characterization of a gene encoding the transcription factor Ace 1 (Activation protein of cup 1 Expression) in the white rot fungus Phanerochaete chrysosporium. Pc-ace 1 encodes ...
    • Cloning and molecular analysis of a cDNA and the Cs-mnp1 gene encoding a manganese peroxidase isoenzyme ... 
      Lobos, S.; Larrondo, F.; Salas, L.; Karahanian, Eduardo; Vicuña E., Rafael (ELSEVIER SCIENCE BV, 1998-01-12)
      A cDNA (MnP13-1) and the Cs-mnp1 gene encoding for an isoenzyme of manganese peroxidase (MnP) from C. subvermispora were isolated separately and sequenced. The cDNA, identified in a library constructed in the vector Lambda ...
    • Cloning, sequencing and expression of the cDNA of endoxylanase B from Penicillium purpurogenum 
      Díaz, René; Sapag, Amalia; Peirano, Alessandra; Steiner, Jeannette; Eyzaguirre, Jaime (ELSEVIER SCIENCE BV, 1997-03-18)
      The cDNA, for xylanase B from Penicillium purpurogenum was cloned and sequenced. This DNA encodes a protein of 208 amino acids which is expected to yield a protein of 183 residues upon processing of the N terminus. The ...
    • CLPFFD-PEG functionalized NIR-absorbing hollow gold nanospheres and gold nanorods inhibit beta-amyloid aggregation 
      Ruff, J.; Hassan, N.; Morales Zavala, Francisco; Steitz, J.; Araya, E.; Kogan Bocian, Marcelo; Simon, U. (Royal Soc Chemistry, 2018-04-28)
      Gold nanoparticles with specific optical properties in combination with the CLPFFD peptide that exhibits selectivity for beta-amyloid (A beta) aggregates are promising photothermal absorbers for application in Alzheimer's ...
    • Cluster assembled silicon-lithium nanostructures: a nanowire confined inside a carbon nanotube 
      Orellana, Walter; Pino Ríos, Ricardo; Yánez, Osvaldo; Vásquez Espinal, Alejandro; Peccati, Francesca; Contreras García, Julia; Cárdenas, Carlos; Tiznado, William (Frontiers Media, 2021)
      We computationally explore an alternative to stabilize one-dimensional (1D) silicon-lithium nanowires (NWs). The Li12Si9 Zintl phase exhibits the NW 1 ∞[Li6Si5], combined with Y-shaped Si4 structures. Interestingly, ...
    • Co-occurrence interaction networks of extremophile species living in a copper mining tailing 
      Galvéz, Gabriel; Ortega, Jaime; Fredericksen, Fernanda; Aliaga Tobar, Víctor; Parra Ortiz, Valentina María; Reyes Jara, Angélica Sofía; Pizarro Arcos, Lorena Andrea; Latorre, Mauricio (Frontiers Media, 2022)
      Copper mining tailings are characterized by high concentrations of heavy metals and an acidic pH, conditions that require an extreme adaptation for any organism. Currently, several bacterial species have been isolated and ...
    • Co2SnO4 / Carbon paste electrode as electrochemical sensor for hydrogen peroxide 
      Mosquera, Nerly; Aguirre, María J.; Ruiz León, Domingo; García, Camilo; Arce, Roxana; Bollo Dragnic, Soledad (Sociedad Chilena de Química, 2017)
      Hydrogen peroxide (H2O2) plays an important role as an intermediary in different biological, chemical and environmental systems. It has been widely used as an oxidizing and antimicrobial agent, in germicides production and ...
    • Co2SnO4/Carbon nanotubes composites: A novel approach for electrochemical sensing of Hydrogen Peroxide 
      Yedinak, E.; Venegas, C. J.; Brito, T. P.; Ruiz León, Domingo; Bollo Dragnic, Soledad (Wiley-V C H Verlag GMBH, 2018)
      For the first time Co2SnO4 (CTO)/Carbon nanotubes (CNT) composites were prepared and used to modify glassy carbon electrodes for the amperometric determination of hydrogen peroxide. The catalytic activity of composites ...
    • Coagulantes del queso 
      Pennacchiotti Monti, Irma (Sociedad Chilena de Tecnología de Alimentos, 2002)
      El queso es un importante producto derivado de la leche; la décima parte de la producción anual en el mundo se destina a la elaboración de queso. Para su fabricación se debe coagular la leche, lo que tiene por objetivo ...
    • COCATALYST EFFECT IN POTASSIUM PERSULFATE INITIATED GRAFTING ONTO CHITOSAN 
      Retuert de la Torre, Pedro Jaime; Yazdani-Pedram Zobeiri, Mehrdad (SPRINGER VERLAG, 1993-11)
      Methyl methacrylate and methyl acrylate were grafted onto chitosan by using potassium persulfate alone as redox initiator and in combination with MnCl2 and CuCl2, as inorganic, and both ammonium tartrate and oxalate as ...