Browsing by Title Artículos de revistas

Now showing items 1615-1634 of 2801

    • Micellar effects upon the hydrolysis of bis-2,4-dinitrophenyl phosphate 
      Buist, G.; Bunton, C.; Robinson, L.; Sepulveda, L.; Stam, M. (1970)
      Micellar effects upon the reaction between hydroxide ion and bis-2,4-dinitrophenyl phosphate to give 2,4-dinitrophenyl phosphate have been examined. The reaction is catalyzed up to 30-fold by cationic micelles of ...
    • Micro-injection of trypsin into axons of squid 
      Rojas, E.; Luxoro Mariani, Mario (Nature, 1963)
      RECENT work appears to show that phospholipids play a fundamental part in membrane physiology1,2. The participation of protein has been thought by some to be more doubtful since external application of proteases seems not ...
    • Microencapsulation by spray coagulation of diltiazem HCL in calcium alginate-coated chitosan 
      Tapia, Cristián; Montezuma, Víctor; Yazdani-Pedram Zobeiri, Mehrdad (2008)
      The aim of this work was to develop a procedure for encapsulation of diltiazem HCl by spray coagulation. Factors affecting the formulations such as the effect of NaCl on the solubility of diltiazem in alginate solution, ...
    • Microencapsulation by spray drying of bioactive compounds from cactus pear (Opuntia ficus-indica) 
      Sáenz Hernández, Carmen Luisa; Tapia, Sandra; Chávez, Jorge; Robert Canales, Paz (2009)
      Bioactive compounds of pulp (CP) and ethanolic (CE) extracts of the cactus pear (Opuntia ficus-indica) were encapsulated with maltodextrin (MD) or inulin (I). A 22 statistical factorial design was then used to study the ...
    • Microencapsulation of H. pluvialis oleoresins with different fatty acid composition: Kinetic stability of ... 
      Bustamante, Andrés; Masson, Lilia; Velasco, Joaquín; Del Valle, José Manuel; Robert Canales, Paz (Elsevier Ltd, 2016)
      © 2015, Elsevier Ltd. All rights reserved. Haematococcus pluvialis is a natural source of astaxanthin (AX). However, AX loses its natural protection when extracted from this microalga. In this study, a supercritical fluid ...
    • Microencapsulation of pulp and ultrafiltered cactus pear (Opuntia ficus-indica) extracts and betanin stability ... 
      Vergara Hinostroza, Cristina; Saavedra, Jorge; Sáenz Hernández, Carmen Luisa; García, Paula; Robert Canales, Paz (Elsevier, 2014)
      Pulp (CP) and ultrafiltered (UF) cactus pear extracts were encapsulated with Capsul (C) by applying a central composite design (CP–C and UF–C systems) by spray-drying. To evaluate the effect of the extract, microparticles ...
    • Microextraction of non-steroidal anti-inflammatory drugs from waste water samples by rotating-disk sorptive ... 
      Manzo, Valentina; Honda, Luis; Navarro, Orielle; Ascar Estay, María Loreto; Richter Duk, Pablo (Elsevier, 2014)
      In this study, six non-steroidal anti-inflammatory drugs (NSAIDs) were extracted from water samples using the rotating-disk sorptive extraction (RDSE) technique. The extraction disk device contains a central cavity that ...
    • Micrométodo para la determinación del índice de acidez butírica en las grasas 
      Schmidt Hebbel, Hermann (Santiago, Chile, Círculo de Estudios de Química y Farmacia, 1931)
      En los análisis bromatológicos de diferentes productos alimenticios, como chocolates y bizcochos de leche, mazapanes, pasteles y galletas a base de mantequilla, etc. se tropieza a menudo con la dificultad de reconocer, si ...
    • MicroRNA profiling and bioinformatics target analysis in dorsal hippocampus of chronically stressed rats: ... 
      Muñoz Llanos, Mauricio; García Pérez, María A.; Xu, Xiaojiang; Tejos Bravo, Macarena; Vidal, Elena A.; Moyano, Tomás C.; Gutiérrez, Rodrigo A.; Aguayo, Felipe I.; Pacheco Zapata, Aníbal; García Rojo, Gonzalo; Aliaga, Esteban; Rojas, Paulina S.; Cidlowski, John A.; Fiedler Temer, Jenny (Frontiers Media, 2018)
      Studies conducted in rodents subjected to chronic stress and some observations in humans after psychosocial stress, have allowed to establish a link between stress and the susceptibility to many complex diseases, including ...
    • MicroRNA-335-5p is a potential suppressor of metastasis and invasion in gastric cancer (vol 9, 114, 2017) 
      Sandoval Bórquez, Alejandra; Polakovicova, Iva; Carrasco Véliz, Nicolás; Lobos González, Lorena; Riquelme, Ismael; Carrasco Avino, Gonzalo; Bizama Soto, Carolina del Carmen; Norero, Enrique; Owen, Gareth I.; Roa Strauch, Juan Carlos; Corvalán, Alejandro H. (BMC, 2021)
    • Microsomal oxidative damage promoted by acetaminophen metabolism 
      Letelier Muñoz, María Eugenia; López Valladares, Miguel; Peredo Silva, Liliana; Rojas Sepúlveda, Daniel; Aracena, Paula (PERGAMON-ELSEVIER SCIENCE LTD., 2011-10)
      Adverse reactions of acetaminophen have been associated to oxidative stress, which may be elicited by reactive oxygen species (ROS) and/or production of the metabolite NAPQI. Both phenomena would arise through the activity ...
    • Microsomal oxidative stress induced by NADPH is inhibited by nitrofurantoin redox biotranformation 
      Aracena, P.; Lazo Hernández, Carlos Enrique; Molina Berríos, Alfredo Enrique; Sepúlveda, D. R.; Reinoso, C.; Larraín, J. I.; Navarro, J.; Letelier, M. E. (Informa Healthcare, 2014)
      Nitrofurantoin is used in the antibacterial therapy of the urinary tract. This therapy is associated with various adverse eff ects whose mechanisms remain unclear. Diverse studies show that the nitro reductive metabolism ...
    • Microsomal UDP-glucuronyltransferase in rat liver: Oxidative activation 
      Letelier Muñoz, María Eugenia; Pimentel Miranda, Alejandra Patricia; Pino, Patricia; Lepe Agrodnik, Ana María; Faúndez Cáceres, Mario Antonio; Aracena Parks, Paula; Speisky Cosoy, Hernán (BLACKWELL PUBLISHING, 2005-06)
      Activation of microsomal UDP-glucuronyltransferase (UDPGT) activity by treatment of hepatic microsomes with either detergents or Fe3+/ascorbate pro-oxidant system has been reported; however, definite mechanisms underlying ...
    • 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 ...
    • Microwave-assisted extraction at atmospheric pressure coupled to different clean-up methods for the ... 
      Fuentes, Edwar; Báez, María E.; Díaz, Juan (2009)
      An effective extraction method was devised for the determination of organophosphorus pesticides (OPPs) in olive and avocado oil samples, using atmospheric pressure microwave-assisted liquid-liquid extraction (APMAE) and ...
    • Microwave-assisted extraction through an aqueous medium and simultaneous cleanup by partition on hexane for ... 
      Fuentes Pérez, Edwar; Báez Contreras, María Estrella; Reyes, Dana (ELSEVIER, 2006-09-25)
      A simple microwave-assisted extraction and partitioning method (MAEP) using water-acetonitrile and n-hexane for desorption and simultaneous partitioning, respectively, together with gas chromatography (GC) was studied to ...
    • Microwave-assisted solvent extraction of the herbicide methabenzthiazuron from soils and some soil natural ... 
      Báez Contreras, María Estrella; Aponte, Abdiel; Sánchez Rasero, Francisco (ROYAL SOC CHEMISTRY, 2003)
      A microwave-assisted solvent extraction (MASE) method for the determination of methabenzthiazuron (MBT) in soil samples by HPLC-DAD ( diode array detection) was evaluated. Spiked soil samples having different physico-chemical ...
    • Microwave-assisted synthesis and regioisomeric structural elucidation of novel benzimidazo[1,2d][1,4]benz ... 
      Pessoa, D.; Espinosa Bustos, Christian; Mella Raipán, Jaime A.; Canales Pacheco, Jorge; Pessoa Mahana, Hernán (ARKAT USA INC, 2009)
      The synthesis of 5H-benzimidazo [1,2-d] [1,4] benzodiazepin -6(7H)-ones 3a-e from readily available 2-(2-aminophenyl)-1H-benzo[d]imidazole derivatives 2a-e and 2-bromoacetyl bromide under microwave conditions is described. ...
    • Mitochondria fine-tune the slow Ca2+ transients induced by electrical stimulation of skeletal myotubes 
      Eisner, Verónica; Parra, Valentina; Lavandero González, Sergio; Hidalgo Tapia, María Cecilia; Jaimovich Pérez, Enrique (Elsevier Ltd, 2010)
      Mitochondria sense cytoplasmic Ca2+ signals in many cell types. In mammalian skeletal myotubes, depolarizing stimuli induce two independent cytoplasmic Ca2+ signals: a fast signal associated with contraction and a slow ...
    • Mitochondria, myocardial remodeling, and cardiovascular disease 
      Verdejo, Hugo; Campo, Andrea del; Troncoso, Rodrigo; Gutiérrez, Tomás; Toro, Barbra; Quiroga, Clara; Pedrozo Cibils, Zully; Muñoz, Juan; García Nannig, Lorena; Castro, Pablo; Lavandero González, Sergio (2012)
      The process of muscle remodeling lies at the core of most cardiovascular diseases. Cardiac adaptation to pressure or volume overload is associated with a complex molecular change in cardiomyocytes which leads to anatomic ...