Repositorio Académico de la Universidad de Chile: Recent submissions
Now showing items 44781-44800 of 98986
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(John Wiley and Sons Ltd, 2004)Theoretical electrophilicity and nucleophilicity scales, defined in terms of electronic reactivity indices, were tested for the reaction of a series of carbonates with neutral and charged reagents of varying nucleophilicity. ...
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(American Chemical Society, 2003)In this paper we describe a method to obtain estimates of the relative nucleophilicity for a series of neutral and charged electron donors from their solution phase ionization potential (Is). The relationship between ...
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(1994)A Kohn-Sham (KS) like formalism for the calculation of solvation energies of singly charged ions is presented. The approximate theory is based on a simple model that represents embedding an atomic ion into a polarizable ...
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(Archivos Latinoamericanos Nutricion, 2015)Cardiovascular diseases (CVD) are the main causes of morbidity and mortality in Latin America (LA). A high sodium intake is one of main risk factors for CVD. Strategies aiming to decrease sodium intake has been shown health ...
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(Springer Verlag, 2017)© 2016, Springer-Verlag Berlin Heidelberg. This paper is a pioneering analysis of past climates in southern South America combining multiproxy reconstructions and the state-of-the-art CMIP5/PMIP3 paleoclimatic models to ...
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(Universiti Putra Malaysia, 2016)© 2008 IFRJ.The prevalence of metabolic syndrome, hypertension, heart disease and diabetes has been increasing rapidly in Chile in recent years. The rate of increase has paralleled the replacement of traditional Mediterranean ...
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(Elsevier B.V., 2016)© 2015 The Authors.Forests worldwide are threatened by various environmental and anthropogenic hazards, especially tropical forests. Knowledge on the impacts of these hazards on forest structure and dynamics has been ...
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(Universidad de Concepcion, 2015)© 2015, Universidad de Concepcion. All rights reserved.Fish exhibit a wide diversity of feeding behaviors, sometimes associated with specifi c morphologies, which may refl ect adaptations to exploit the resources depending ...
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(Blackwell Publishing Ltd, 2015)©2015. American Geophysical Union. All Rights Reserved. Remote and in situ observations in the solar wind show that ion and electron velocity distributions persistently present deviations from thermal equilibrium. Ion ...
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(Oxford University Press, 2015)© 2016 The Author. The aim of this study was to compare the psychometric properties of the "Word" and "Picture" versions of the Spanish FCSRT across the same sample of mild Alzheimer disease (AD) patients and controls. ...
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(Scholars Research Library, 2016)A Density Functional Theory study was carried out to find relationships between the electronic/molecular structure of a group of pyrazalone-quinazolone hybrids and their inhibition of human 4-hydroxyphenylpyruvate dioxygenase ...
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(Springer Verlag, 2015)© 2014, Springer-Verlag Berlin Heidelberg and ISPA.In a predator–prey interaction, the fitnesses of the predator and the prey depend on their abilities to recognize each other, a process that may involve different sensory ...
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(New Zealand Plant Protection Society, 2015)© 2015 New Zealand Plant Protection Society (Inc.). In New Zealand, unmanaged bees species can be important crop pollinators, but their abundance and distribution is poorly known within hybrid carrot seed crops. Standardised ...
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(Academic Press, 2016)© 2015 Elsevier Ltd. The avifauna of Chile is relatively depauperate, comprising 469 extant species, of which 213 are terrestrial. However, the Coquimbo Region presents a broad ecological transition from the hyperarid ...
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(Elsevier Ireland Ltd, 2016)© 2016 Published by Elsevier Ireland Ltd. Plant growth regulators (PGRs) have become an integral part of agricultural and horticultural practices. Accordingly, there is an increased demand for new and cost-effective products. ...
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(Elsevier Masson SAS, 2016)© 2015 Institut Pasteur.Darwin's naturalization hypothesis suggests that the success of an invasive species will be lower when colonizing communities are formed by phylogenetically related rather than unrelated species due ...
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(American Physical Society, 2015)© 2015 American Physical Society.Multiferroic materials are mostly antiferromagnets, often containing incommensurate magnetic arrangements stemming from the magnetoelectric interaction. Using soft x-ray resonant magnetic ...
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(Elsevier Ltd, 2014)©2014 Elsevier Ltd. All rights reserved.In solar cells, ZnS window layer deposited by chemical bath technique can reach the highest conversion efficiency; however, precursors used in the process normally are materials ...
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(John Wiley and Sons Ltd, 2015)© 2015 John Wiley & Sons, Ltd. We present a 16 000-year vegetation and climate reconstruction from pollen and plant macrofossil records obtained at a small alpine lake in South Island, New Zealand (41°S). The expansion of ...
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(1983)A normal coordinates analysis for the hexamminochro mium (III) ion, in octahedral symmetry has been underta ken. A simplified M(NX) model has been adopted, since many of the gerade vibrational frequencies are still un ...
