Browsing by Title Facultad de Ciencias
Now showing items 4733-4752 of 8177
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(Wiley, 2020)Air pollution problems can be large, complex, and ill-structured. They can vary from location to location and combine many complex components: urban expansion, increasing vehicles and industrial emissions, biomass burning, ...
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(Springer Verlag, 2018)© 2018, Springer-Verlag GmbH Germany, part of Springer Nature. In this work some possibilities for deriving a local electrophilicity are studied. First, we consider the original definition proposed by Chattaraj, Maiti, and ...
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(ELSEVIER, 2006-04-15)Opuntia scrublands are important ecological-economic systems in the Andean area. They perform a major role protecting slopes against erosion, improving the soil properties and providing a variety of products employed in ...
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(2019-01)Una consecuencia importante del cambio global antropogénico es la modificación de la cobertura del suelo, impactando a la biodiversidad y la provisión de servicios ecosistémicos, como el suministro de agua dulce para consumo ...
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(Springer New York, 1997)
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(Walter de Gruyter GMBH, 2021)In this article, we study the obstructions to the local-global principle for homogeneous spaces with connected or abelian stabilizers over finite extensions of the field C ((x; y)) of Laurent series in two variables over ...
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(1978)La localización celular y subcelular de calicreina renal fue investigada. Se aislaron diferentes fracciones sucelulares de riñón de rata mediante centrifugación diferencial y gradientes discontinuas de sacarosa. El análisis ...
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(Universidad de Chile, 1992)
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(Universidad de Chile, 2015)En esta tesis se estudia, teórica y experimentalmente, las condiciones para localizar luz utilizando el concepto de bandas planas en sistemas de arreglos de guías de ondas ópticas completamente periódicos, los que pueden ...
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(Universidad de Chile, 2010)Poli-alcoholes como manitol, xilitol y principalmente sorbitol, cumplen variadas funciones en plantas. Entre estas, la mas estudiada es el transporte de carbono como sorbitol por medio del floema en la familia Rosacea. ...
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(Universisdad de Chile, 2014)La neurotrofina factor de crecimiento derivado de cerebro (BDNF) es ampliamente expresada en el cerebro adulto donde regula las propiedad estructurales y funcionales de las sinapsis, afectando la plasticidad y la ...
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(Universidad de Chile, 1990)
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(The Rockefeller University, 1999)Using Ba2 1 as a probe, we performed a detailed characterization of an external K 1 binding site located in the pore of a large conductance Ca2 1-activated K 1 (BKCa) channel from skeletal muscle incorporated into planar ...
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(2007)We study the properties of junctions created by the crossing of N identical branches of linear discrete networks. We reveal that for N > 2 such a junction creates a topological defect and supports two types of spatially ...
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(American Physical Society, 2015)The localized mode propagation in binary nonlinear kagome ribbons is investigated with the premise to ensure controlled light propagation through photonic lattice media. Particularity of the linear system characterized by ...
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(2012)We examine localization of light in nonlinear (Kerr) kagome lattices in the shape of narrow strips of varying width. For the narrowest ribbon, the band structure features a flat band leading to linear dynamical trapping ...
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(ELSEVIER, 2008-10-13)We study localized modes on a single Ablowitz-Ladik impurity embedded in the bulk or at the surface of a one-dimensional linear lattice. Exact expressions are obtained for the bound state profile and energy. Dynamical ...
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(1974)The effects due to localized spin fluctuations (LSF) in dilute superconducting alloys are investigated. Expressions for the critical temperature Tc as function of impurity concentration nI and the specific heat jump at the ...
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(Optical Soc Amer, 2020)We address the issue of nonlinear modes in a two-dimensional waveguide array, spatially distributed in the Lieb lattice geometry, and modeled by a saturable non-linear Schrodinger equation. In particular, we analyze the ...
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(1995)Deuterium quadrupole splittings from the aromatic ring of a series of deuterium labeled n-alkylpyridinium ions with linear n-alkyl groups from Ci to Cie have been measured using 2H-NMR spectroscopy. These splittings were ...