Now showing items 4441-4460 of 4969

    • Campodónico, Paola R.; Ormazábal Toledo, Rodrigo; Aizman, Arie; Contreras Ramos, Renato (Elsevier, 2010)
      We herein report on the group electrophilicity of molecular fragments present in the title compounds to describe leaving group abilities in reactions of aryl benzoates toward CN . It is found that the presence ...
    • Varela, Cristián; Mauriaca, Cecilia; Paradela, Alberto; Albar, Juan P.; Jerez Guevara, Carlos; Chávez, Francisco P. (2010)
      Background: Inorganic polyphosphate (polyP), a polymer of tens or hundreds of phosphate residues linked by ATP-like bonds, is found in all organisms and performs a wide variety of functions. PolyP is synthesized in ...
    • Troncoso, Alejandra J.; Cabezas, Nancy J.; Faúndez, Eric H.; Urzúa, Alejandro; Niemeyer Marich, August (Springer, 2010)
      Host-plants can mediate the interactions between herbivores and their mutualists and also between parasitic plants and their mutualists. The present study reveals how a hemiparasitic plant parasitizing three host species ...
    • Pinto Jiménez, Manuel (ELSEVIER, 2010)
      Using Krasnoselskii's fixed point theorem, functional analysis methods and dichotomy theory, we study the existence and uniqueness of the periodic solutions of integrodifferential equations with bounded and unbounded delays.
    • Nilo Poyanco, Ricardo; Saffie, Carlos; Lilley, Kathryn; Baeza Yates, Ricardo; Cambiazo Ayala, Liliana; Campos Vargas, Reinaldo; González Canales, Mauricio; Meisel, Lee; Retamales Aranda, Julio; Silva Ascencio, Herman; Orellana López, Ariel (2010)
      Background: Peach fruit undergoes a rapid softening process that involves a number of metabolic changes. Storing fruit at low temperatures has been widely used to extend its postharvest life. However, this leads to undesired ...
    • Navas Flores, Andrés; Rivas, Cristóbal (2009)
      We describe all possible ways of bi-ordering Thompson’s group F: its space of bi-orderings is made up of eight isolated points and four canonical copies of the Cantor set.
    • Nájera, Andrea; Simonetti Zambelli, Javier Andrés (2010)
      The occurrence of fauna in commercial plantations is often associated with structural complexity. Through ameta-analysis, we tested whether the structural complexity of plantations could enhance bird species assemblages ...
    • Muñoz, Marcelo A.; Muñoz Muñoz, Orlando; Joseph-Nathan, Pedro (Wiley InterScience, 2010)
      The absolute configuration of semisynthetic (2)-3a,6b-acetoxytropane 1, prepared from (2)-6b-hydroxyhyoscyamine 2, has been determined using vibrational circular dichroism (VCD) spectroscopy. The vibrational spectra (IR ...
    • Moreno, Juan; Martínez, Juan Gabriel; Morales, Judith; Lobato, Elisa; Merino, Santiago; Tomás, Gustavo; Vásquez Salfate, Rodrigo; Möstl, Erich; Osorno, José L. (Blackwell, 2010)
      For sexual selection to operate in monogamous species, males of poor quality in some factor like age, ornamentation, condition or aggressiveness, should lose paternity compared with higher quality males. We tested this ...
    • Pena, G.; Pereyra, C.; Armando, M.; Chiacchiera, S.; Magnoli, C.; Orlando, Julieta; Dalcero, A. M.; Rosa, C. A. R.; Cavaglieri, L. R. (2010)
      Aims: To evaluate gliotoxin production by Aspergillus fumigatus strains isolated from feedstuff intended for domestic animals and pets, and to determine the amount of gliotoxin in these substrates. Methods and Results: ...
    • Molina Salinas, Gloria María; Bórquez, Jorge; Ardiles, Alejandro; Said Fernández, Salvador; Loyola, Luis Alberto; San Martín Barrientos, Aurelio; González Collado, Isidro; Peña Rodríguez, Luis Manuel (ELSEVIER, 2010)
      The antituberculosis activity of 14 natural azorellane and mulinane diterpenoids isolated from Azorella compacta, Azorella madreporica, Mulinum crassifolium, and Laretia acaulis, together with eight semisynthetic ...
    • Miño Galaz, Germán; Contreras Ramos, Renato (Elsevier, 2010)
      Hydrogen bond shortening and strengthening induced by confinement within fullerenes for a series of hydrogen bonded bihalides were studied. Significant increase in the electron localizability at the hydrogen bond region ...
    • Lühr-Sierra, Susan; Vilches-Herrera, Marcelo; Fierro, Angélica; Ramsay, Rona; Edmondson, Dale E.; Reyes Parada, Miguel; Cassels Niven, Bruce; Iturriaga-Vásquez, Patricio (ELSEVIER, 2010)
      2-Arylthiomorpholine and 2-arylthiomorpholin-5-one derivatives, designed as rigid and/or non-basic phenylethylamine analogues, were evaluated as rat and human monoamine oxidase inhibitors. Molecular docking provided ...
    • Jørgensen, Trine N.; Alfaro, Jennifer; Enríquez, Hilda L.; Jiang, Chao; Loo, William M.; Atencio, Stephanie; Bupp, Melanie R. Gubbels; Mailloux, Christina M.; Metzger, Troy; Flannery, Shannon; Rozzo, Stephen J.; Kotzin, Brian L.; Rosemblatt Silber, Mario César; Bono Merino, María Rosa; Erickson, Loren D. (The American Association of Immunologists, Inc., 2010)
      Autoantibodies are of central importance in the pathogenesis of Ab-mediated autoimmune disorders. The murine lupus susceptibility locus Nba2 on chromosome 1 and the syntenic human locus are associated with a loss ofimmune ...
    • Gómez, Tatiana; Florez, Elizabeth; Rodríguez, José A.; Illas, Francesc (2010)
      The interaction of atoms of Groups 9, 10, and 11 with the (001) surface of TiC, ZrC, VC, and δ-MoC has been studied by means of periodic density functional calculations using slab models. The calculated values of the ...
    • Fuentes, S.; Zárate Aliaga, Ramón; Chávez, Edgar; Muñoz, P.; Díaz Droguett, Donovan Enrique; Leyton, P. (Springer, 2010)
      A new synthetic route to obtain high-purity strontium titanate, SrTiO3, using the sol–gel-hydrothermal reaction of TiCl4 and a SrCl2 solution in an oxygen atmosphere has been developed. In the synthesized products the ...
    • Fontúrbel, Francisco E.; Silva Rodríguez, Eduardo A.; Cárdenas, Nelson H.; Jiménez, Jaime (ELSEVIER, 2010)
      Habitat loss is one of the most important causes of biodiversity loss in South American temperate rainforests, where many endemic species exist. Among these is the monito del monte (Dromiciops gliroides), an arboreal ...
    • Correa, Edwin; Jaramillo, Carlos; Manchester, Steven; Gutiérrez, Mauricio (2010)
      Although Rhamnaceae are distributed worldwide today, the former hypothesis for its Laurasian origins may need to be reconsidered in view of recently discovered fossils from the Guaduas Formation of central Colombia (~68 ...
    • Comelli, Nieves C.; Fuentealba Rosas, Patricio; Castro, Eduardo A.; Jubert, Alicia H. (Springer, 2010)
      The equilibrium structures, the planarity of the C (=O)X linkage and the nature of the chemical bond in the Y−C(=O)−XR1R2 [where: Y= −CH−(CH2−CH2−CH3)2, X=N,O and R1, R2= H; alkyl and aryl groups and lone pair electrons ...
    • Chávez, Renato; Roa, Amanda; Navarrete, Katherinne; Trebotich, Jovanka; Espinosa, Yeison; Vaca Cerezo, Inmaculada (Springer, 2010)
      Strains of Penicillium camemberti and Penicillium roqueforti were tested for properties that could be important for future biotechnological applications of these fungi. Penicillium camemberti CECT 2267 and P. roqueforti NRRL ...