Artículos de revistas: Recent submissions
Now showing items 421-440 of 4968
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(Frontiers Media, 2020)Understanding why some plant lineages move from one climatic region to another is a mayor goal of evolutionary biology. In the southern Andes plant lineages that have migrated along mountain ranges tracking cold-humid ...
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(Springer, 2020)The genusSchizanthus(Solanaceae) comprises 12 accepted species primarily endemic to Chile. It is characterized by the presence of numerous tropane alkaloids found as ester derivatives of isomeric acids like angelic, ...
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(MDPI, 2020)The morphological variations of four populations of geographically isolated Triatoma infestans located in the area of inter-Andean valleys and Chaco of Chuquisaca, Bolivia, were evaluated. Fifty-three females and sixty-one ...
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(Elsevier, 2020)Arctic lakes emitmethane (CH4) to the atmosphere. The magnitude of this flux could increasewith permafrost thaw butmight also be mitigated bymicrobial CH4 oxidation. Methane oxidation in oxic water has been extensively ...
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(Wiley, 2020)Ultrarelativistic electron remnant belts are frequently observed at low L shells between the inner belt and a re-forming outer belt following geomagnetic disturbances that led to a dropout of electron fluxes at higher ...
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(Public Library Science, 2020)Many freshwater ecosystems worldwide, and particularly Mediterranean ones, show increasing levels of salinity. These changes in water conditions could affect abundance and distribution of inhabiting species as well as the ...
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(American Chemical Society, 2020)An alchemical transformation is any process, physical or fictitious, that connects two points in the chemical space. A particularly important transformation is the vanishing of a proton, whose energy can be linked to the ...
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(Elsevier, 2020)During the last decade, the one drug-one target strategy has resulted to be inefficient in facing diseases with complex ethiology like Alzheimer's disease and many others. In this context, the multitarget paradigm has ...
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(Elsevier, 2020)Highly sodium deficient Na0.6NbO3 (NN) ceramics were prepared and characterized. Their mean structure could be described by a mixture of the predominant P polymorph (S.G. Pbma) and the Q phase (S.G. P2(1)ma), at room ...
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(Cambridge Univ Press, 2020)Hookworms of the genus Uncinaria parasitize pinniped pups in various locations worldwide. Four species have been described, two of which parasitize pinniped pups in the southern hemisphere: Uncinaria hamiltoni parasitizes ...
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(Elsevier, 2020)Carotenoids are plastid isoprenoid pigments that play critical roles in light harvesting, photoprotection, and phytohormone biosynthesis. They are also vitamin-A precursors and antioxidant molecules important for human ...
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(BMC, 2020)Background With more than 30,000 species, teleosts comprise about half of today's living vertebrates, enriched with a wide set of adaptations to all aquatic systems. Their evolution was marked by modifications of their ...
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(Springer, 2020)In high-mountain habitats, summer frost events can have negative consequences for plant fitness. Despite this, most studies have evaluated the consequences of frosts for vegetative structures of perennial plants, and neither ...
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(Springer, 2020)Oxidative stress is considered as one of the main mechanisms by which airborne particles produce adverse health effects. Several methods to estimate the oxidative potential (OP) of particulate matter (PM) have been proposed. ...
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(Springer, 2020)Replacement of native forests by exotic monoculture plantations is the principal driver of land change in central Chile; it reduces the richness and abundance of native mammals. The presence of shrub vegetation in mature ...
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(Springer, 2020)Latitudinal diversity patterns in marine species are commonly estimated from literature records, which at times are incomplete and/or biased. Advances in molecular phylogenetics have contributed to avoid this bias, clarifying ...
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(Elsevier, 2020)The hydroxymethylpyrimidine phosphate kinases (HMPPK) encoded by the thiD gene are involved in the thiamine biosynthesis pathway, can perform two consecutive phosphorylations of 4-amino-5-hydroxymethyl-2methyl pyrimidine ...
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(Nature, 2020)Egg size and structure reflect important constraints on the reproductive and life-history characteristics of vertebrates(1). More than two-thirds of all extant amniotes lay eggs(2). During the Mesozoic era (around 250 ...
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(IOP Publishing, 2020)Depending on the physical conditions involved, beam plasma systems may reveal new unstable regimes triggered by wave instabilities of different natures. We show through linear theory and numerical simulations the existence ...