Artículos de revistas: Recent submissions
Now showing items 1961-1980 of 4968
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(2011)We establish the existence of bounded, almost periodic solutions and asymptotically almost periodic solutions for functional difference equations with infinite delay on abstract phase space. An application to Volterra ...
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(2011)The in vitro effect of the resinous exudate of Heliotropium filifolium, of the 3 H-spiro[1-benzofuran-2,1'-cyclohexane] derivative called filifolinol 1, isolated from the resin and the semi-synthetic compounds filifolinone ...
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(2011)Background: The yeast Xanthophyllomyces dendrorhous is used for the microbiological production of the antioxidant carotenoid astaxanthin. In this study, we established an optimal protocol for protein extraction and performed ...
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(2010)The attraction between [C2H4]2 and [C 2H2]2,3 and Tl(I) in the hypothetical [Tl(C2H4)2]+ and [Tl(C 2H2)n]+ (n = 2,3) complexes was studied using ab initio methods. It was found that the changes around the equilibrium C-Tl ...
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(2011)Iron-sulfur (Fe-S) clusters are small inorganic cofactors formed by tetrahedral coordination of iron atoms with sulfur groups. Present in numerous proteins, these clusters are involved in key biological processes such as ...
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Theoretical study of the interaction between Pt(0) and MPH3+ fragments in complexes of the [Pt3 ... (2011)Ab initio calculations suggest that a series of complexes of the [Pt3(μ-CO)3(PH3)3]-MPH3+ type (M = Cu, Au, Ag) are stable. We have studied these complexes at the HF, MP2, B3LYP, and PBE levels of theory. The magnitude of ...
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(2009)The crystal structure of N-methyl-1H-indole-2-carboxamide C10H10N2O was determined by single crystal X-ray diffraction. The structure can be described as consisting of an indole group and as substituent, linked at C2, the ...
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(2011)The dynamics of four source-sink models for an exploited resource under a constant fishing effort are here presented. Two models are described by ordinary differential equations; the other two are expressed by impulsive ...
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(2011)A set of regioisomeric pairs of tricyclic hydroquinones, analogues of antitumor 9,10-dihydroxy-4,4-dimethyl-5,8-dihydroanthracen-1(4H)-one (1) and other derivatives, were synthesized and their regiochemistry and NMR spectra ...
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(Universidad de Valparaiso, 2011)Accurate species identification remains a basic first step in any study of biodiversity, particularly for global changes and their consequences. Thus, there is a pressing need for taxonomic expertise in a broad range of ...
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(2011)A new conducting film derived from the complex [Fe (diaphen)3]2+, (diaphen=5,6-diamino-1,10-phenanthroline) was electropolymerized by cyclic voltammetry onto a glassy carbon electrode. Poly-[FeII (diaphen)3] was studied ...
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(2011)This work describes the preparation of modified electrodes with Poly-tetraruthenated porphyrin. Also, a detailed Raman and electrochemical characterization of these surfaces is shown. Glassy carbon electrodes were modified ...
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(2010)Background: Physiological tolerances are important determinants of the biogeography of species. Questions: What is the relationship between thermal tolerance and the biogeographic origin of species? What are the relationships ...
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(2011)Common inhabitants of Antarctic and Subantarctic rocky shores, the limpet genus Nacella, includes 15 nominal species distributed in different provinces of the Southern Ocean. The Magellanic Province represents the area ...
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(2010)The Masafuera Rayadito (Aphrastura masafuerae) is a little known, critically endangered, endemic bird species of Alexander Selkirk Island, Juan Fernandez Archipelago, Chile. The last assessment reported a population as low ...
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(2011)In this paper, we study differential equations with piecewise constant argument of generalized (DEPCAGs) type, i.e., the argument is a general step function. They are hybrid equations combining properties of continuous and ...
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(2011)Newly described outcrops, excavations and sediment cores from the region of Última Esperanza, Magallanes, contain tephra derived from the large late-glacial explosive R1 eruption of the Reclús volcano in the Andean Austral ...
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(2011)We report the first data on nesting ecology of the Slender-billed Parakeet (Enicognathus leptorhynchus) from two wild nests in native temperate rainforests of southern Chile. Nests were located in natural cavities 19 m up ...
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(Elsevier B.V., 2011)Non-relativistic DFT (PW91, PBE, PB86) geometry optimizations followed by relativistic ZORA single point energy calculations on the neutral hexafluoride complexes of the series of actinides U, Np, Pu, Am, Cm, Bk, Cf, Es, ...
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(2011)An implementation of a novel strategy for cluster geometry optimization, using a stochastic method, is applied. This algorithm is based on the spirit of Big Bang theory. The strategy consists on a three-step procedure; a ...
