Now showing items 4461-4480 of 5198

    • Calderón, Inés; Lobos, S.; Mora, Guido C. (Springer-Verlag, 1984)
      Two outer membrane proteins of Salmonella typhi T y 2 were extensively co-purified. According to their migration in dodecyl sulfate/polyacrylamide gel electrophoresis and solubility characteristics, these proteins are ...
    • Chávez, H. (Colegio de Químicos Farmacéuticos de Chile, 1980)
      La materia viva nos permite fijar un marco de referencia desde el punto de vista de las dimensiones. Las células y bacterias tienen tamaños que varían entre 0,2 y 10 micrones; los componentes celulares y los virus entre ...
    • Chávez, H. (Colegio Químico Farmacéutico de Chile, 2000)
      ¿Se ha detenido a pensar la cantidad de tecnología computacional que nos ha invadido los últimos años? Posiblemente ya haya escuchado hablar de electrodomésticos que se conectan a la Internet, y del refrigerador que tiene ...
    • Chávez, H.; Sánchez, P.; Telha Maldonado, Claudio; Puelles, Carlos; Thielemann, Ana María (Taylor & Francis Ltd., 2002)
      This work reports the experience and contribution of two web pages to formal, traditional education. The aim of these pages were to: (i) provide complementary information to the courses; (ii) permit interactivity through ...
    • Carrasco Rimassa, María Adriana; Préndez Bolívar, María Margarita (Sociedad Chilena de Química, 1984)
      Several methods recommended for soil analysis using acid digestion were tested for the total analysis of minor and trace elements of the clay fraction. The proposed method using mixtures of HClO4/HF was adequate to dissolve ...
    • Carrasco Rimassa, María Adriana; Préndez Bolívar, María Margarita (Kluwer Academic Publishers, 1991)
      The elemental content of some soils of continental Chile and the Antarctic Peninsula are reported. The elements: Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb were analyzed. Trace elements differed among soils. The values ...
    • Castañeda Magliona, Fernando; Rivera, E.; Zanocco Loyola, Antonio (Sociedad Chilena de Química, 1980)
      El estudio químico y espectroscópico de los acil etoxicarbonil metilidentrifenilofosforanos I, revela que son compuestos extraordinariamente estables (1). En este trabajo se informa la síntesis de una serie de ílidos ...
    • Chávez Arrué, Jorge; Briones, J.; Arancibia, Aquiles (Colegio de Farmacéuticos de la Provincia de Buenos Aires (Argentina), 1993)
      Se realizó un estudio acelerado de estabilidad en comprimidos de ciprofloxacina. Los comprimidos se almacenaron en condiciones de estantería y a 37ºC y 75% de humedad relativa durante 6 meses. Se determinó la aparición ...
    • Cañete Molina, Alvaro Félix; Meléndrez Cancino, Mónica Ximena; Saitz Barría, Claudio; Zanocco Loyola, Antonio (MARCEL DEKKER INC, 2001)
      A very simple and efficient method to prepare aminonaphthalene derivatives in good yield using the Bucherer reaction under microwave irradiation in a closed vessel is described. A reaction time of 30 min at 150 Watts of ...
    • Calvo Pérez, Víctor; Ostrovsky, Sergei; Vega, Andrés; Pelikan, Juraj; Spodine Spiridonova, Evgenia; Haase, W. (AMER CHEMICAL SOC,, 2006-01-23)
      The trimer [Co-3(mu-OOCCF3)(4)(mu-H2O)(2)(OOCCF3)(2)(H2O)(2)(C4H8O2)]center dot 2C(4)H(8)O(2) (1) is composed of three tetragonally distorted Coll centers bridged by four trifluoroacetates and two bridging water molecules. ...
    • Carrizo, Carla N.; Pitta Alvarez, Sandra I.; Kogan Bocian, Marcelo; Giulietti, Ana M.; Tomaro, María L. (PERGAMON-ELSEVIER SCIENCE LTD, 2001-07)
      The polyamine, cadaverine, was detected in transformed root cultures of Brugmansia candida (syn. Datuira candida), a Solanaceae which produces the tropane alkaloids scopolamine and hyoscyamine. To the best of our knowledge, ...
    • Calvo Pérez, Víctor; Vega, Andrés; Spodine Spiridonova, Evgenia (AMER CHEMICAL SOC, 2006-04-10)
      Three structures of novel cluster carboxylates of molybdenum(II) (la-c) and copper(II) (2) with the OOC-CCHCo2(CO)(6) ligand are presented. The solvent topology plays an important role in the formation of the crystal lattice ...
    • Cárdenas Muñoz, Sergio Patricio; Parra, C.; Bravo, Jaime F.; Morales, P.; Lara Peñaloza, Hernán; Herrera-Marschitz Muller, Mario; Fiedler Temer, Jenny (ELSEVIER SCI IRELAND LTD, 2002-10-04)
      It has previously been shown that adrenalectomy (ADX) produces apoptosis in the granule cell of the dentate gyrus (DG), and that this effect is prevented by corticosterone replacement. Thus, we have investigated how this ...
    • Cartier Rovirosa, Luis; García Nannig, Lorena; Kettlun, Ana María; Castañeda, P.; Collados, L. E.; Vásquez, F.; Giraudon, P.; Belin, M. F.; Valenzuela Pedevila, María Antonieta (TAYLOR & FRANCIS AS, 2004-04)
      The cerebrospinal fluid (CSF) is in direct contact with the extracellular space of the CNS, thus biochemical processes in the CNS could potentially be reflected in the CSF. Changes in extracellular matrix (ECM) proteins ...
    • Contreras, M. (AMER CHEMICAL SOC, 2001-09)
      Densities and viscosities for 1,4-dioxane with 1-propanol and 2-propanol mixtures have been measured as a function of mole fraction at atmospheric pressure at (25, 30, 35, and 40) degreesC. The calculated excess volumes ...
    • 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 ...
    • Borie B., Gilda (Colegio Químico Farmacéutico de Chile, 1982)
      No tiene
    • Borie B., Gilda; Peirano V., Pedro; Espinoza González, Jeannette; Zunino Venegas, Hugo; Aguilera S., S. María (Sociedad Chilena de la Ciencia del Suelo, 2004)
      Se propone una nueva metodología para hacer el seguimiento de los metales pesados y nutrientes en suelos tratados con residuos orgánicos eventualmente peligrosos y que reemplaza el uso de lisímetros. El método consiste ...
    • Ballester, Digna; Pak Davidovich, Nelly; Yáñez, Enrique; Reid, Alejandro; Trabbucco, Edda; Pennacchiotti Monti, Irma; Masson Salaué, Lilia; Mella Rojas, María Angélica; Vinagre, Julia; Cerda A., Dina; Schmidt Hebbel, Hermann; Donoso, Gonzalo (Sociedad Chilena de Nutrición, Bromatología y Toxicología, 1967)
      The gross chemical composition, biological quality and true digestibility of different samples of sunflower presscake meals (Helianthus annus) of three Edible Oil Factories of Santiago were determined. Analysis showed ...
    • Backhouse Erazo, Nadine; Delporte Vergara, Carla; Negrete Córdova, Rosa; Cassels Niven, Bruce; Schneider, Christiane; Breitmaier, Eberhard; San Feliciano, Arturo (Elsevier Science ltd., 1995)
      Bioactivity guided fractionation of the dichloromethane extract from Psoralea glandulosa yielded the isolation of a diasteromeric mixture of cyclobakuchiols A and B as possible anti-inflammatory active compounds.