Browsing by Title Facultad de Ciencias
Now showing items 4657-4676 of 8178
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(Springer, 2020)New composites formed by layered hybrid TiO2(stearic acid) (LHTiO2) and, Cu2O nanoparticles were studied as photocatalysts that extend the response range to light visible for the evolution of hydrogen and the degradation ...
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(Cambridge University Press, 2019)For a large family of properties of homogeneous spaces, we prove that such a property holds for all homogeneous spaces of connected linear algebraic groups as soon as it holds for homogeneous spaces of SLn with finite ...
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(American Chemical Society, 1981-11-20)The seeds of Sophora mcrcrocarpo Sm. (Fabaceae) are a promising source of edible oil (l), and contain matrine, N-methylcytisine and baptifoline (2). Glc analyses of the leaves of this species suggested that matrine is ...
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(Copernicus Gesellschaft MBH, 2018)Pouteria splendens (A. DC.) Kuntze, the Chilean lucumo, is an endemic tree and the only member of the Sapotaceae family in Chile. It is considered an endangered species as a consequence of its restricted distribution and ...
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(SPRINGER, 2007-05)Leaf litter accumulation can have either positive, negative or neutral effects on seed germination and seedling recruitment. In montane woodlands of the Mediterranean zone of central Chile, large amounts of leaf litter ...
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(Elsevier, 2012)The genus Drimys is distributed in Chile from semi-arid zones to sub-Antarctic forests; there are three species of this tree, D. andina, D. confertifolia and D. winteri, the latter with varieties chilensis and winteri. ...
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(Universidad de Chile, 2008)
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(2007)Fragmentation of the Maulino forest implies significant habitat loss, as well as the modification of the microclimatic conditions of the remaining forest patches. Fragments are drier, hotter and receive more light than the ...
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Leaf traits and leaf herbivory variation between centre and north-edge populations of Drimys winteri (Universidad de Chile, 2017)
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(CAMBRIDGE UNIV PRESS, 2008-04)We consider Ledrappier's dynamical system, which was the first example of a Z(2)-action which is 2-mixing but not 3-mixing. Our main result is that, excluding certain small 'constructible' sets, the system is mixing of ...
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(2011)During tissue morphogenesis and differentiation, cells must self-renew while contemporaneously generating daughters that contribute to the growing tissue. How tissues achieve this precise balance between proliferation and ...
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(Taylor & Francis, 2021)Two genera of fish, Orestias (Cyprinodontidae) and Trichomycterus (Trichomicteridae), inhabit in the Lauca National Park, UNESCO Biosphere Reserve, located at the Andes highlands in northern Chile. The present study ...
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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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(Wilson Ornithological Soc, 2016)Agonistic behavior in woodpeckers has been described for a wide range of species, although previous studies have not reported aggressive encounters resulting in the death of adults. In this study, we provide the first ...
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(Pensoft, 2020)A new species, Leucheria cantillanensis sp. nov., endemic to the coastal mountain range of Central Chile, is described. By using both nDNA and cpDNA, phylogenetic relationships of the new species were investigated. This ...
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(Springer, 2014)A basidiomycetous yeast, strain E2A-C3- II, was isolated from a marine sponge (Hymeniacidon sp.) collected at a depth of 6 m in Fildes Bay, King George Island, Antarctica. The phylogenetic analysis revealed that the ...
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(2012)Neurogenesis continues in the adult brain and in the adult olfactory epithelium. The cytokine, leukaemia inhibitory factor and nitric oxide are both known to stimulate neuronal progenitor cell proliferation in the olfactory ...
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(Amer Soc Biochemistry Molecular Biology, 2015)N-6-Threonylcarbamoyl-adenosine (t(6)A) is a universal modification occurring at position 37 in nearly all tRNAs that decode A-starting codons, including the eukaryotic initiator tRNA (tRNA(i)(Met)). Yeast lacking central ...
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Levels of Lycopene b-Cyclase 1 Modulate Carotenoid Gene Expression and Accumulation in Daucus carota (PLoS ONE, 2013)Plant carotenoids are synthesized and accumulated in plastids through a highly regulated pathway. Lycopene b-cyclase (LCYB) is a key enzyme involved directly in the synthesis of a-carotene and b-carotene through the ...
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(Amer Chemical Soc, 2015)We herein report on the effect that water molecules, present as impurities, in the vicinity of an ionic liquid model structure, may induce on the Lewis acidity/basicity patterns normally observed in these materials. Depending ...