Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 20223-20242 of 20250
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(TAYLOR & FRANCIS LTD, 2005-02-15)Two new cadmium acetate compounds, Cd(tpy)(Ac)(2)center dot 2H(2)O (1) and Cd-2(bbip)(2) (Ac)(3)center dot 0.5S(2)O(8)center dot 2H(2)O (2) (tpy = 2,2',2 ''-terpyridine; bbip = 2,6-(benzimidazol-2-yl)pyridine; Ac = acetate), ...
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(UNIV CHICAGO PRESS, 2004-03-01)We present the discovery of a high-redshift, X-ray-selected active galactic nucleus (AGN) by the Calan-Yale Deep Extragalactic Research ( CYDER) survey: CXOCY J033716.7-050153, located at z=4.61, the second high-redshift ...
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(Oxford University Press, 2018)We report the results of intensive X-ray, UV, and optical monitoring of the Seyfert 1 galaxy NGC 4593 with Swift. There is no intrinsic flux-related spectral change in any variable component with small apparent variations ...
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(Wiley-Blackwell, 2016)Xenon in nanodiamonds from meteorites is a remarkable impurity. At least two isotopically dif-ferent components of Xe are known: P3 and Xe-HL. The P3 component might represent adsorbed Xe; whereas the component enriched ...
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(EDP Sciences, 2017)Aims. We study X-ray bright tidal disruption events (TDE), close to the peak of their emission, with the intention of understanding the evolution of their light curves and spectra. Methods. CandidateTDEareidentifiedbysear ...
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(2002)Despite that several models to structure text documents and to query on this structure have been proposed in the past a standard has emerged only relatively recently with the introduction of XML and its proposed query ...
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(ACM, 2014-06)The eXtensible Markup Language (XML) is acknowledged as the de facto standard for semistructured data representation and data exchange on the Web and many other scenarios. A well-known shortcoming of XML is its verbosity, ...
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(Instituto de Investigaciones Agropecuarias, INIA, 2018)Xylem vessels are responsible for conducting water, in a metastable state, to the transpiring leaves. As tension increases, hydraulic failure may occur. At any given tension, the resistance of the xylem vessels to cavitation ...
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(Universidad de Chile, 2023)
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(W.B. Saunders, 2019)© 2018Background: Echocardiography (ECO) is frequently used as a screening test in patients with acute ischemic brain disease. We aimed to evaluate the additional information and therapeutic impact resulting from ECO in ...
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(BLACKWELL, 2006-01-21)The first charge-coupled device UBV(RI)(C) photometric study in the area of the doubtful open cluster NGC 2129 is presented. Photometry of a field offset 15 arcmin northwards is also provided, to probe the Galactic disc ...
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(Oxford University, 2017)Despite their close proximity, the complex interplay between the two Magellanic Clouds, theMilky Way and the resulting tidal features, is still poorly understood. Recent studies haveshown that the Large Magellanic Cloud ...
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(IOP Publishing, 2015)Using observations of Spitzer/IRAC, we report the serendipitous discovery of excess infrared emission from a single white dwarf PG 0010+280. At a temperature of 27,220 K and a cooling age of 16 Myr, it is the hottest and ...
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(CAMBRIDGE UNIV PRESS, 2008-04)In this paper, a group shift is an expansive action of Z(d) on a compact metrizable zero-dimensional group by continuous automorphisms. All group shifts factor topologically onto equal-entropy Bernoulli shifts; abelian ...
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(Universidad de Chile, Facultad de Filosofia y Humanidades, Departamento de Literatura, 2019)The article analyzes the speech of the Zig-Zag magazine in relation to the city of Arica, as a collaborator in a propaganda policy of Chileanization, in the context in which Peru and Chile must prepare for the Treaty that ...
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(American Physical Society, 2014)Liquid crystals displays with tailoring electrodes exhibit complex spatiotemporal dynamics when a large voltage is applied. We report experimental observations of the appearance of a programmable zig-zag lattice using ...
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(Elsevier, 2015)Zinc oxide nanoparticles with different amounts of incorporated silver (ZnO:Ag; 0.6, 3, 6, and 9 at.% Ag) have been successfully synthesized by a simple sol gel method. The effect of Ag content on the properties of ZnO ...
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(Taylor & Francis, 2012)The synthesis, characterization, and properties of three types of one-dimensional zinc oxide nanostructures are described. They were obtained by solvothermal treatment of nanometric zinc oxide as zinc ion source (i.e., ...
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(Elsevier, 2020)A comprehensive understanding of the magmatic system evolution and petrogenetic environment is crucial for the correct interpretation of magmatic zircon age spectra. In the Central Andes, a protracted Late Paleozoic period ...
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(Elsevier, 2017)The ultramafic massifs of the Serrania de Ronda (namely Ronda, Ojen and Carratraca) are portions of Proterozoic (similar to 1.2-1.8 Ga) subcontinental lithospheric mantle (SCLM) affected by partial melting and infiltration ...
