Now showing items 1441-1460 of 2731

    • Zambra, Carlos; Hernández, Diógenes; Reyes, Hugo; Riveros, Nicole; Lemus Mondaca, Roberto (Frontiers Media, 2021)
      In this study, Kageneckia oblonga leaves were dried under different drying conditions and techniques [oven drying (NC), vacuum drying (VNC), convective drying (FC), and microwave-assisted convective drying (MWFC)]. Thus, ...
    • Berdichevsky, Elisa; Riveros, Nora; Sánchez-Armáss, Sergio; Orrego, Fernando (1983)
      Kainate (0.62-5 mM) was found to increase the initial rate of influx of 45Ca and of 22Na into the non-inulin space of rat thin brain cortex slices incubated in vitro, and to shorten the equilibration time for both these ...
    • Squella Serrano, Juan; Lemus,; Núñez Vergara, Luis (1995)
      Electrochemical reduction of Ketanserin was studied at different pH and concentrations using polarography and cyclic voltammetry. Ketanserin exhibits two differential pulse polarographic peaks at the dropping mercury ...
    • Bustamante, Diego; Paeile, Carlos (1993)
      1. 1. The formalin test and R-III nociceptive electromyographic reflex were used to determine the origin of analgesia induced by ketorolac tromethamine (KT) in rats. 2. 2. The effects of KT and morphine were compared after ...
    • Del Villar, Eugenia; Gaule, Carlos; Vega, Patricio (1995)
      1. 1. Streptozotocin-induced diabetes produced significant changes on the drug metabolizing enzyme machinery of rat kidney microsomes. 2. 2. It reduced the cytochrome P-450 content by 30%, this effect being reversed by ...
    • Escobar, Mauricio; Gracia, Francisco; Karelovic, Alejandro; Jiménez, Romel (Royal Society of Chemistry, 2015)
      © The Royal Society of Chemistry 2015.Carbon monoxide hydrogenation was studied over a γ-alumina-supported 1 wt% Rh catalyst by means of kinetic and in situ infrared measurements. The study was carried out at 200-300 °C, ...
    • Zanocco Loyola, Antonio; Cañete Molina, Alvaro Félix; Meléndez, M. X. (SOCIEDAD CHILENA DE QUIMICA, 2000-03)
      The reaction between 2-p-methoxyphenyl-4-phenyl-2-oxazolin-5-one and 2,2,6,6-tetramethyl-1-piperidinyl-N-oxide (TEMPO) in benzene as the solvent generates quantitatively 4,4'-bis-[2-p-methoxyphenyl-4-phenyl-2-oxazolin-5-one]. ...
    • Zanocco Loyola, Antonio; Lemp Miranda, Else; Günther Sapunar, Germán (1997)
      The sensitized photo-oxidation of boldine and its permethylated derivative, glaucine, has been studied in several solvents using steady-state kinetic methods. Values of kB, the total rate constant for the reaction between ...
    • Campos, A. M.; Lissi Gervaso, Eduardo A.; Vergara, C.; Lanio, M. E.; Alvarez, C.; Pazos, I.; Morera, V.; García, Y.; Martinez, D. (1999)
      St I is a toxin present in the Caribbean Sea anemone Stichodactyla helianthus which is highly hemolytic in the nanomolar concentration range. Exposure of the toxin to free radicals produced in the pyrolysis of 2,2'- ...
    • Campos, A. M.; Lissi Gervaso, Eduardo A.; Vergara, C.; Lanio, M. E.; Alvarez, C.; Pazos, I.; Morera, V.; Garcia, Y.; Martinez, D. (1999)
      St I is a toxin present in the Caribbean Sea anemone Stichodactyla helianthus which is highly hemolytic in the nanomolar concentration range. Exposure of the toxin to free radicals produced in the pyrolysis of 2,2′ ...
    • Zanocco Loyola, Antonio; Günther Sapunar, Germán; Fuente, J. R. de la; Lemp Miranda, Else; Pizarro U., N. (1998)
      Detection of O,('A,) phosphorescence emission, A,,,, = 1270 nm, following laser excitation and steady-state competitive methods was employed to measure total rate constants, k,, for the reactions of the diuretic furosemide, ...
    • Prado, Gaspar; Ibañez, María Belén; Acosta, Alison; Chamorro, Eduardo; Hermosilla Ibañez, Patricio; Günther Sapunar, Germán; Pizarro, Nancy; Vega, Andrés (Elsevier, 2017)
      The reaction of [P,N-{(C6H5)(2)(C5H4N)P}Re(CO)(3)Br] (RePNBr) with silver triflate leads to the complex [P,N-{(C6H5)(2)(C5H4N)P}Re(CO)(3)(O-CF3SO3)] (RePNTfO) with moderate yield. This new P,N-Re-I triflate compound contains ...
    • Prado, Gaspar; Ibañez, María Belén; Acosta, Alison; Chamorro, Eduardo; Hermosilla-Ibáñez, Patricio; Günther Sapunar, Germán; Pizarro, Nancy; Vega, Andrés (Elsevier Ltd, 2017)
      © 2017 Elsevier Ltd The reaction of [P,N-{(C6H5)2(C5H4N)P}Re(CO)3Br] (RePNBr) with silver triflate leads to the complex [P,N-{(C6H5)2(C5H4N)P}Re(CO)3(O-CF3SO3)] (RePNTfO) with moderate yield. This new P,N-ReI triflate ...
    • Fernandois, D.; Na, E.; Cuevas, F.; Cruz, G.; Lara Peñaloza, Hernán; Paredes Vargas, Alfonso (Bioscientifica, 2016)
      We have previously reported that kisspeptin (KP) may be under the control of the sympathetic innervation of the ovary. Considering that the sympathetic activity of the ovary increases with aging, it is possible that ...
    • Fernandois, Daniela; Cruz, Gonzalo; Na, Eun Kyung; Lara Peñaloza, Hernán; Paredes, Alfonso (BioScientifica Ltd., 2017)
      Previous work has demonstrated that the increase in the activity of sympathetic nerves, which occurs during the subfertility period in female rats, causes an increase in follicular cyst development and impairs follicular ...
    • San Martín, Álvaro; Rodriguez Aliaga, Piere; Molina, José Alejandro; Martin, Andreas; Bustamante, Carlos; Baez Larach, Mauricio Andrés (National Academy of Sciences, 2017)
      ATP-dependent proteases translocate proteins through a narrow pore for their controlled destruction. However, how a protein substrate containing a knotted topology affects this process remains unknown. Here, we characterized ...
    • Tapia Opazo, Gladys; Pepper, Inés; Smok Sahid, Gladys; Videla Cabrera, Luis (1997)
    • Bittner, Alex; Castro Gálvez, Pablo; Pérez, Osvaldo; Corbalán, Ramón; Alcaíno Olivares, Hernán Alejandro; Troncoso Cotal, Rodrigo Hernán; Chiong Lay, Mario; Díaz Araya, Guillermo; Vicencio, José Miguel; Moraga, Francisco; Zanolli, Diego; Winter, José L.; Zamorano, Juan J.; Lavandero González, Sergio (Sociedad Chilena de Cardiología y Cirugía Cardiovascular, 2006)
      La metaloproteinasa (MMPs) son enzimas proteolíticas que participan en la inestabilidad de la placa aterosclerótica. En cultivos celulares, la actividad de metaloproteinasas-2 y 9 (MMP-2 y MMP-9) aumenta en presencia de ...
    • Chávez, H. (Colegio de Químicos Farmacéuticos de Chile (A:G:), 1985)
      Es cada vez más evidente que la informática (manejo de información) y los computadores (procesadores de información), están cambiando nuestro sistema de vida. Por ahora podemos decir que el computador nos ofrece las ...
    • 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 ...