Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 18871-18890 of 20469
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(ELSEVIER SCIENCE SA, 2004-06-15)Lithium derivatives of substituted cyclopentadiene ligands reacted with CrCl3(THF)(3) in THF solution to afford homodinuclear complexes of the type [{(eta(5)-RCp)CrCl(p-Cl)}2] [R = SiMe3 (1), CH2C(Me)CH2 (2)]. Complex 1 ...
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(SPRINGER HEIDELBERG, 2008-01)This paper presents random field models with Gaussian or gamma univariate distributions and isofactorial bivariate distributions, constructed by composing two independent random fields: a directing function with stationary ...
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(Universidad de Chile, 2023)Las condritas se componen de matriz y cóndrulos, pequeñas gotas de silicato de composición ferro-magnesiana, normalmente de olivino y piroxeno, que revelan complejas texturas. La formación de cóndrulos ha sido interpretada ...
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(Universidad de Chile, 2012)El estudio se centra en el análisis de la percepción de los directivos escolares sobre el impacto en la equidad a partir de la implementación de la Ley de Subvención Escolar Preferencial Ley SEP-, que desde el año 2008 ...
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(Springer, 2012-02)In many applications, the properties of an object being modeled are stored as labels on vertices or edges of a graph. In this paper, we consider succinct representation of labeled graphs. Our main results are the succinct ...
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(2010)We implement and compare the major current techniques for representing general trees in succinct form. This is important because a general tree of n nodes is usually represented in pointer form, requiring O(n log n) ...
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(AMER PHYSICAL SOC, 2011-02-22)In a mixture of two species of grains of equal size but different mass, placed in a vertically vibrated shallow box, there is spontaneous segregation. Once the system is at least partly segregated and clusters of the heavy ...
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(Copernicus, 2021)The detachment of large parts of low-angle mountain glaciers resulting in massive ice-rock avalanches have so far been believed to be a unique type of event, made known to the global scientific community first for the 2002 ...
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(Elsevier Ltd, 2019)We study the determinants of sudden stops in capital flows to emerging markets. Using gross international asset and liability flows (from the point of view of domestic residents), we identify three types of situations: ...
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(Universidad de Chile, 2012)Punta Arenas, ubicada a orillas del Estrecho de Magallanes, se encuentra sobre suelos depositados en ambientes glaciares y post-glaciares. La densificación urbana ha llevado a construir sobre suelos casi siempre saturados ...
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(Universidad de Chile, 2021)El presente trabajo consiste en la caracterización de suelos, en particular salinos, de la ciudad de Arica. A partir de la información disponible se clasificaron los distintos tipos de suelos según la clasificación USCS, ...
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(Magnolia Press, 2019)A new fossil cycad species, Sueria laxinervis, is described from the Upper Cretaceous (Maastrichtian) Quiriquina Formation in Cocholgüe, Bíobío Region, Chile. The generic assignment is supported by the taeniopterid-type ...
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(Springer Science and Business Media Deutschland GmbHinfo@springer-sbm.com, 2020)
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(Associacao Brasileira de Psiquiatria, 2019)Objective: To identify clinical and sociodemographic factors that increase or decrease suicidal risk in a clinical sample of subjects seeking mental health care. Method: A cross-sectional study was performed at three health ...
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(Springer Verlag, 2019)Background: Variable retention (aggregated and dispersed retention) harvesting proposed for Nothofagus pumilio was designed for timber purposes and biodiversity conservation. Harvesting by opening canopy generates different ...
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(Elsevier, 2018)Sulfate reduction and its associated contaminant immobilization in marsh soils supporting a phosphogypsum stack was examined by pore-water and solid analysis, selective extractions, microscopy and sulfur K-edge X-ray ...
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(Elsevier, 2018)The use of solar technologies should proliferate in Chile as half of the country has a solar irradiance (GHI) above 5 kWh/(m(2)d). Moreover, the Atacama Desert exhibits further advantageous conditions with 7 kWh/(m(2)d), ...
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(Universidad de Chile, 2017)Here I present an in-depth study of the central region of active galactic nuclei oriented to improve current mass estimation methods of distant super massive black holes and to infer the physical properties of the gas ...
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(2015)Using Nbody/SPH simulations we study the evolution of the separation of a pair of SMBHs embedded in a star forming circumnuclear disk (CNDa). This type of disk is expected to be formed in the central kilo parsec of the ...
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(ELSEVIER SCIENCE BV, 2005-01)In this paper we consider the following problem {-Δu+u=uN+2N-2+εinΩ,u>0inΩ,∂u∂ν= 0on∂Ω, where Ω is a smooth bounded domain in RN and N≥3. We prove the existence of a one-spike solution to (0.1) which ...
