Browsing by Title Facultad de Ciencias
Now showing items 3998-4017 of 8176
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(Elsevier, 2012)The prevailing view in the palaeoclimate literature of the last 20 years is that the Southern Westerly Winds (SWW) were intensified over southern Australia and Tasmania during the warmer-than-present early Holocene (11e8 ...
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Head morphometry of Orestias (Cyprinodontiformes). Response to extreme Southern Altiplano systems? (Springer, 2020)The distribution ofOrestias(Cypriniforms) species in the southern western Altiplano (17oS-22oS) is allopatric; the seven species described inhabit different freshwater systems with extreme climatic characteristics and ...
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(Elsevier Science, 2016)Background: Although evidence from Latin America and the Caribbean suggests that depression can be effectively treated in primary care settings, depression management remains unevenly performed. This systematic review ...
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(Oxford University Press, 2001)Relative growth rates, basal and acclimated thermotolerance, membrane damage, fluorescence emission, and relative levels of free and conjugated ubiquitin and HSP70 were compared after 2 h of treatment at different temperatures ...
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(Sociedad Chilena Química, 2016)RIVER flows have constant interaction between water and bed sediments; for this reason knowledge of the characteristics of the sediments is fundamental to understand water chemistry. This study determined the concentrations ...
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(Springer, 2017)In this study, we analyze the concentration of ten metals in two freshwater fish-the benthic catfish Trichomycterus areolatus and the limnetic silverside Basilichthys microlepidotus-in order to detect possible accumulation ...
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(2013)Microbial solubilizing of metals in acid environments is successfully used in industrial bioleaching of ores or biomining to extract metals such as copper, gold, uranium and others. This is done mainly by acidophilic and ...
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(2004)Stem cells are crucial for normal development and homeostasis, and their misbehavior may be related to the origin of cancer. Progress in these areas has been difficult because the mechanisms regulating stem cell lineages ...
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(American Institute of Physics, 2020)We have compared the magnetic properties of well-controlled ultra-short (<= 50nm) atomic iron (Fe) chains embedded in Fe-phthalocyanine films with those in Fe-hydrogen (H-2) phthalocyanine superlattices. Surprisingly, we ...
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(1999)We have investigated the solution conformation of the functionally relevant C-terminal extremes of α- and β-tubulin, employing the model recombinant peptides RL52α3 and RL33β6, which correspond to the amino acid sequences ...
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(Wiley, 2017)Alzheimer's disease (AD) is characterized by extracellular senile plaques, intracellular neurofibrillary tangles, and neuronal death. Aggregated amyloid-beta (A beta) induces inflammation and oxidative stress, which have ...
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(Universidad de Chile, 2022)La herbivoría por insectos es una de las principales causas de mortalidad en plantas. Las plantas han evolucionado respuestas defensivas que reducen el daño de los herbívoros, incluyendo estrategias de defensa como el ...
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(BLACKWELL, 2006-12)While climatic extremes are predicted to increase with global warming, we know little about the effect of climatic variability on biome distribution. Here, we show that rainy El Nino Southern Oscillation (ENSO) events can ...
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(2007)Forest fragmentation alters plant-animal interactions, including herbivory. Relying manipulative experiments, we test if the reduction in insect herbivory associated with forest fragmentation translates into increased ...
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(GAUTHIER-VILLARS/EDITIONS ELSEVIER, 2007-01)Habitat fragmentation may modify ecological interactions such as herbivory, and these changes can impinge upon plant fitness. Through a natural experiment, we evaluated if herbivory, foliar survival and shoot growth of the ...
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(SOCIEDAD BIOLGIA CHILE, 2006)Levels of body iron should be tightly controlled to prevent the formation of oxygen radicals. lipoperoxidation. genotoxicity, and the production of cytotoxic cytokines, which result in damage to a number of organs. Enterocytes ...
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(Universisdad de Chile, 2006)Entre las multiples preciones sobre las zonas costeras en Chile, la salmonicultura destaca por sus proyecciones de expansión y sosteniendo crecimientos experimentando en los últimos años. Los principales impactos ambientales ...
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(2011)We present the first direct and unbiased measurement of the evolution of the dust mass function of galaxies over the past 5 billion years of cosmic history using data from the Science Demonstration Phase of the ...
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(WILEY-BLACKWELL, 2010-11)Two forms of the squat lobster Pleuroncodes monodon can be found along the Pacific coast of South America: a smaller pelagic and a larger benthic form that live respectively in the northern and southern areas of the ...
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(American Chemical Society, 2017)© 2017 American Chemical Society.The aromatic fractions of snow, lake sediment, and air samples collected during 2011-2014 in the Athabasca oil sands region were analyzed using two-dimensional gas chromatography following ...