Browsing by Title Facultad de Ciencias
Now showing items 4618-4637 of 8178
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(Royal Society of Chemistry, 2020)Lyotropic liquid crystals (LLCs) are mixtures of amphiphile molecules usually studied as mimetic of biological membrane. The equilibrium dynamics of tetradecyltrimethyl ammonium cation (TTA(+)) molecules forming nematic ...
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(2007)En este artículo se presenta diversos ejemplos concretos y estudio de casos que aportan evidencia sobre la manera en que la cognición hecha cuerpo “florece” principalmente mediante metáforas, que involucran cambios ...
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(Sociedad de Neurología, Psiquiatría y Neurocirugía, 2010-03-03)El constante aumento en la expectativa de vida en la población mundial ha incrementado la preocupación hacia la búsqueda de la comprensión de la Enfermedad de Alzheimer (EA), así como de su diagnóstico temprano y tratamiento. ...
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(1990)The extract of the aerial parts of Gutierrezia espinosae gave 11 new and two known labdanes as well as five new nerylgeraniol derivatives. The structures were elucidated by high field 1H NMR spectroscopy. The chemotaxonomic ...
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(2002)A chemical study of aerial parts of Haplopappus illinitus afforded five labdane diterpenoids whose structures were elucidated by high field NMR spectroscopy and 2D techniques. Four of them are dicarboxylic acids previously ...
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(Natl Research Council of Canada, 1996)The marine gastropod mollusk *Trimusculus peruvianus collected on the coast of Central Chile yielded four new labdane metabolites. The structural elucidation of all compounds was accomplished by spectral analysis. One ...
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(2018-08)La industria chilena hortofrutícola enfrenta grandes desafíos en el área de inocuidad alimentaria y bioseguridad. Garantizar el cumplimiento de los más altos estándares internacionales, le permite a empresas exportadoras, ...
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(Blackwell Publishing Ltd, 1997)Aphid infestation triggered a significant induction of hydroxamic acids (Hx) in wild wheat Triticum uniaristatum seedlings in comparison to control seedlings. We hypothesized that indirect costs of Hx induction (expressed ...
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(Soc Int Odonatologica, 2017-06)Pantala flavescens is the most widespread odonate on Earth, absent only in Antarctica and parts of Europe. A recent study performed with sequences of mtDNA suggested the presence of one panmictic population of the species ...
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(Universidad de Chile, 1989)En esta tesis se estudio la autoecología de dos especies simpátricas de lagartijas (Liolaemus curis y L. hernani) de la zona central de Chile, con el objeto de conocer los presuntos mecanismos puestos en juego que permite ...
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(2007)We analyze the surface circulation of the coastal waters of the Humboldt Current system based on five Lagrangian satellite-tracked drifters (three launched on January 2005 and two on January 2006) deployed at 30{ring ...
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(1992)In this work the inverse problem of the variational calculus for systems of differential equations of any order is analyzed. It is shown that, if a Lagrangian exists for a given regular system of differential equations, ...
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(Wiley Periodicals, 2013)The isthmic complex is part of a visual midbrain circuit thought to be involved in stimulus selection and spatial attention. In birds, this circuit is composed of the nuclei isthmi pars magnocellularis (Imc), pars ...
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(Springer Netherlands, 2018)© 2017, Springer Science+Business Media B.V. Landfill fires are relatively frequent incidents that can result in severe environmental impacts. On the morning of January 15, 2016, a fire occurred at the Santa Marta landfill ...
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(Frontiers Media, 2016)In this paper we address a frontier topic in the humanities, namely how the cultural and natural construction that we call landscape affects well-being and health. Following an updated review of evidence-based literature ...
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(Chunli BAI, Sishen XIE, Xing ZHU, 2007-03-15)
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(2009)Complexes of Europium(III) and Terbium(III) with 2,2-bipyridine and 1,10-phenanthroline were inserted into Na-bentonite by ion exchange reactions at room temperature. The products display interlaminar distances and ...
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(Elsevier , Science Ltd., 2008-09-28)Complexes of Europium(III) and Terbium(III) with 2,2-bipyridine and 1,10-phenanthroline were inserted into Na-bentonite by ion exchange reactions at room temperature. The products display interlaminar distances and ...
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(Springer-Verlag, 2014)Lakes formed in the Aysén region of southern Chile after the retreat of mountain glaciers, established by ~17,900 calendar years before present (cal years BP) or earlier, contain numerous late-glacial and Holocene tephra ...