Browsing by Title Artículos de revistas

Now showing items 1495-1514 of 2801

    • Landsat image and sample design for water reservoirs (Rapel dam Central Chile) 
      Lavanderos, Leonardo; Pozo, María Eugenia; Pattillo, Carlos; Miranda, Hernán (Kluwer Academic Publishers, 1990)
      Spatial heterogeneity of the Rapel reservoir surface waters is analyzed through Landsat images. The image digital counts are used with the aim or developing an aprioristic quantitative sample design.Natural horizontal ...
    • Lanthanide complexes with tetradentate N,N ,O,O - dipyridyl-based ligands: structure, stability, and ... 
      Borisova, Nataliya E.; Kostin, Andrey A.; Eroshkina, Elizaveta A.; Reshetova, Marina D.; Lyssenko, Konstantin A.; Spodine Spiridonova, Evgenia; Puntus, Lada N. (Wiley, 2014)
      A series of lanthanide(III) complexes (Ln = La to Lu) with 2,2 -bipyridyl-6,6 -dicarboxamide ligands were obtained. The X-ray structure of the di(N-ethylanilide) of 2,2 -bipyridyl- 6,6 -dicarboxylic acid is reported. ...
    • Lanthanide sorbent based on magnetite nanoparticles functionalized with organophosphorus extractants 
      Basualto Flores, Carlos; Gaete, José; Molina, Lorena; Valenzuela Lozano, Fernando; Yáñez Soto, Claudia; Marco, José F. (National Institute for Materials Science, 2015)
      In this work, an adsorbent was prepared based on the attachment of organophosphorus acid extractants, namely, D2EHPA, CYANEX 272, and CYANEX 301, to the surface of superparamagnetic magnetite (Fe3O4) nanoparticles. The ...
    • Large cation-selective pores from rat liver peroxisomal membranes incorporated to planar lipid bilayers 
      Labarca, Pedro; Wolff, Daniel; Soto, Ubaldo; Necochea, Cecilia; Leighton, Federico (Springer-Verlag, 1986)
      Fusion of a highly purified fraction of rat liver peroxisomal membranes to planar lipid bilayers incorporates large, cation-selective voltage-dependent pores. The PK/PCl ratio of these pores, estimated in KCl gradients, ...
    • The layered structure of poly[[hexaaqua( l4-benzene-1,2,4,5-tetracarboxylato) dicopper(II)] tetrahydrate] 
      Cancino, Patricio; Spodine Spiridonova, Evgenia; Paredes García, Verónica; Venegas Yazigi, Diego; Vega, Andrés (International Union of Crystallography, 2013)
      In the structure of the title compound, {[Cu2(C10H2O8)- (H2O)6] 4H2O}n, the benzene-1,2,4,5-tetracarboxylate ligand, (btec)4 , is located on a crystallographic inversion centre in a 4-coordination mode. The coordination ...
    • Lead and molybdenum in soils and forage near an atmospheric source 
      Schalscha, E.; Morales, M.; Pratt, P. (1987)
      Soil samples collected in 1982 and 1983 from locations near an industrial park consisting of a Mo ore processing plant and a car battery manufacturing industry were analyzed for total and extractable Mo and Pb. Grass samples ...
    • Levels of plasma angiotensin-(1-7) in patients with hypertension who have the angiotensin-1-converting ... 
      Jalil Milad, Jorge; Palomera Gómez, Cristián Alejandro; Ocaranza, María Paz; Godoy, Iván; Román, Maritza; Chiong Lay, Mario; Lavandero González, Sergio (EXCERPTA MEDICA INC, 2003-09-15)
      In patients with hypertension who have the DD-ACE genotype (higher angiotensin-converting enzyme [ACE] activity), plasma levels of angiotensin-(1-7) are 4 times lower than in patients with the II-ACE genotype (lower ACE ...
    • Light sensitive antiferroelectric achiral copolymers 
      Soto Bustamante, Eduardo; González Henríquez, Carmen M.; Vergara Toloza, Rafael Orlando; Haase, Wolfgang (ROYAL SOC CHEMISTRY, 2012)
      Five copolymers were prepared by polymerization of azo-benzene methacrylate monomers in solution using AIBN as initiator. The mesophases were observed by a polarizing light microscope which showed tilted smectic C phases ...
    • Light-induced release of the cardioprotective peptide angiotensin-(1-9) from thermosensitive liposomes with ... 
      Bejarano, Julián; Rojas, Aldo; Ramírez Sagredo, Andrea; Riveros Salvatierra, Ana; Morales Zavala, Francisco; Flores, Yvo; Riquelme Meléndez, Jaime; Guzmán, Fanny; Araya, Eyleen; Chiong Lay, Mario; Ocaranza, María Paz; Morales Montecinos, Javier; Villamizar Sarmiento, María Gabriela; Sánchez Vergara, Gina; Lavandero González, Sergio; Kogan, Marcelo J. (Elsevier, 2020)
      Angiotensin-(1-9), a component of the non-canonical renin-angiotensin system, has a short half-life in blood. This peptide has shown to prevent and/or attenuate hypertension and cardiovascular remodeling. A controlled ...
    • Limpieza y detergentes en la industria alimentaria 
      Spag Hagar, Jaime (Sociedad Chilena de Tecnología de Alimentos, 1976)
      La limpieza constituye una operación crítica en la industria alimentaria. Generalmente se tiende a considerar como impurezas o suciedad solamente a materias tales como tierra, pesticidas, microorganismos, grasas, carbohidratos, ...
    • Linear free energy relationship analysis of solvent effect on singlet oxygen reactions with mono and ... 
      Castro Olivares, Rafael; Günther Sapunar, Germán; Zanocco Loyola, Antonio; Lemp Miranda, Else (2009)
      Detection of O2(1 g) emission, max = 1270 nm, following laser excitation and steady-state methodswere employed to measure the total reaction rate constant, kT, and the reactive reaction rate constant, kR, for the reaction ...
    • Linear free energy relationship analysis of solvent effects on singlet oxygen reactions 
      Lemp Miranda, Else; Zanocco Loyola, Antonio; Lissi Gervaso, Eduardo A. (2003)
      Linear solvation energy relationship, LSER, and theoretical linear solvation energy relationship, TLSER, formalisms are applied to the analysis of solvent effects on singlet oxygen reactions. Treatments allow quantitative ...
    • lip-like genes in Phanerochaete sordida, and Ceriporiopsis subvermispora, white rot fungi with no detectable ... 
      Rajakumar, S.; Gaskell, J.; Cullen, C.; Lobos, S.; Karahanian, Eduardo; Vicuña E., Rafael (AMER SOC MICROBIOLOGY, 1996-07)
      Lignin peroxidase-like genes were PCR amplified from Phanerochaete sordida and Ceriporiopsis subvermispora, fungi lacking lignin peroxidase (LiP) activity. Amplification products were highly similar to previously described ...
    • Lipid and sensory quality of canned Atlantic salmon (Salmo salar): Effect of the use of different seaweed ... 
      Ortiz Viedma, Jaime; Vivanco, Juan P.; Aubourg, Santiago P. (Wiley, 2014)
      The addition of natural compounds as additives in fish products is increasingly important to prevent or delay their deterioration. Nowadays, most of the additives used on seafood are synthetic, and their safety is being ...
    • Lipid changes in barley seedlings subjected to water and cold stress 
      Zún ̃iga, Gustavo; Fernandez, Julio; Cristi, Raul; Alberdi, Miren; Corcuera, Luis (1990)
      Barley seedlings were subjected to water and cold stress, and the composition of lipid fractions and the accumulation of several low molecular weight metabolites in leaves determined. Proline, glycine-betaine and the total ...
    • Lipid damage in farmed rainbow trout (Oncorhynchus mykiss) after slaughtering and chilled storage 
      Ortiz Viedma, Jaime; Palma, Oscar; González, Natalia; Aubourg, Santiago P. (WILEY-V C H VERLAG GMBH, 2008-12)
      The flow ice system including ozone (OFI condition) was tested for slaughtering and storage (up to 16 days) of farmed rainbow trout (Oncorhynchus mykiss). Lipid damage analyses were carried out and compared to sensory ...
    • Lipid domains in giant unilamellar vesicles and their correspondence with equilibrium thermodynamic phases: ... 
      Fidorra, M.; Garcia, A.; Ipsen, J. H.; Härtel, S.; Bagatolli, L. A. (2009)
      We report a novel analytical procedure to measure the surface areas of coexisting lipid domains in giant unilamellar vesicles (GUVs) based on image processing of 3D fluorescence microscopy data. The procedure involves the ...
    • Lipid nanoparticles for the topical delivery of retinoids and derivatives 
      Morales, Javier; Valdés, Karina; Morales, Javier; Oyarzún Ampuero, Felipe (Future Medicine Ltd., 2015)
      Retinoids are lipophilic compounds that are highly used in cosmetics/therapeutics for skin disorders. Conventional formulations are limited by poor water solubility, high chemical/photochemical instability and the irritation ...
    • Lipopolysaccharide activates toll like receptor 4 and prevents cardiac fibroblast to myofibroblast differentiation 
      Bolivar, Samir; Santana, Roxana; Ayala, Pedro; Landaeta, Rodolfo; Boza Fuentes, Pía; Humeres Martínez, Claudio; Vivar Sánchez, Raúl; Muñoz Jofré, Claudia; Pardo, Viviana; Fernández, Samuel; Anfossi, Renatto; Díaz Araya, Guillermo (Springer, 2017)
      Bacterial lipopolysaccharide (LPS) is a known ligand of Toll-like receptor 4 (TLR4) which is expressed in cardiac fibroblasts (CF). Differentiation of CF to cardiac myofibroblasts (CMF) is induced by transforming growth ...
    • Liquid crystalline side chain methacrylic azo containing polymers 
      González Henríquez, Carmen M.; Soto Bustamante, Eduardo; Waceols-Gordillo, D. A.; Haase, Wolfgang (2009)
      This paper describes the synthesis and characterisation of methacrylic liquid crystalline side chain polymer containing azo group, with (PM6OAn) and without (PM6An) hydroxyl group. The characterisation was done by using a ...