Browsing by Title Facultad de Ciencias
Now showing items 3898-3917 of 8178
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(OXFORD UNIV PRESS INC, 2010-08-06)Animal personalities are interindividual behavioral differences that are consistent across time or contexts. Increasing research is revealing the adaptive significance of personalities, although the mechanisms driving ...
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(BLACKWELL, 2008-06)1. It has been proposed that habitats with low productivity, and hence low resource availability, may favour individuals with lower rates of resource use and energy expenditure. In birds, some studies have shown that basal ...
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(Springer, 2020)The geographical distribution and ecological niche of the two circulating species of the Sporothrix genus in Venezuela was established. For this, 68 isolates of Sporothrix spp. from patients of different regions of the ...
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(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2006-06)We assessed the geographic distribution of Tillandsia lomas in northern Chile, from Arica (18 degrees 20'S) to the Loa river (21 degrees 25'S) and discussed the factors that might potentially underlie the observed patterns. ...
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(WILEY-BLACKWELL, 2016)Orestias ascotanensis is a killifish endemic to the Ascotan salt pan in the Chilean Altiplano, where it inhabits 12 springs with different degrees of isolation. This species is a suitable model for studying the effect of ...
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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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(BLACKWELL, 2008-05)The movement of materials and organisms between ecosystems is a common process in nature. In the present study we investigate the hypothesis that the movement of consumers between ecosystems depends not only on the ...
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(Elsevier, 2017)The complex orogenic history and structure of Southern South America, coupled with Pleistocene glacial cycles, have generated paleoclimatic and environmental changes that influenced the spatial distribution and genetic ...
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(University of Chicago, 2020)Amphibian locomotor capacity is strongly linked to temperature and hydration. However, organisms in nature experience covariation of multiple environmental factors, and thus to better understand the effects of thermal and ...
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(Amer Geophysical Union, 2021)Using a time series of geomagnetic storm events between 1957 and 2019, obtained by selecting storms where Dst<-50 nT, we have analyzed the probability of occurrence of moderate, intense, and severe events. Considering that ...
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(SOCIEDAD CHILENA DE QUIMICA, 2004-09)Condensation of 4-methylthiobenzaldehyde with 1-nitropropane unexpectedly afforded separable amounts of both (E)- and (Z)-1-(4-methylthiophenyl)-2-nitrobutene. The H-1 and C-13 NMR spectra allowed the unequivocal assignment ...
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(Sociedad Chilena de Quimica, 2004)Condensation of 4-methylthiobenzaldehyde with 1-nitropropane unexpectedly afforded separable amounts of both (E)- and (Z)-1-(4-methylthiophenyl)-2- nitrobutene. The 1H and 13C NMR spectra allowed the unequivocal assignment ...
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(Universidad de Chile, 1993)
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(Universidad de Chile, 2007)
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(Scientific Research Publishing, 2018)Diatom floras were examined in a high-altitude geothermal field, 4200 - 4500 m (29 degrees 19'S 68 degrees W'), located in the Central Andean dry Puna ecoregion or southern Altiplano. These locations include hostile ...
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(Universidad de Chile, 2012)Bravo Energy Chile S.A es una empresa ubicada en la zona industrial del plano regulador Metropolitano en la comuna de Maipú. Desde 1998 transforma residuos peligrosos tipo corrosivo, tóxico y varios en combustible ...
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(Universisdad de Chile, 2016)La abeja de miel, Apis melifera, es el polinizador mas frecuentemente utilizados en huertos comerciales en la Región Metropolitana, sin embargo la población de estas abejas se enfrentan a la actualidad a patógenos como ...
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(Universidad de Chile, 2019-10)El presente trabajo consistió en realizar un estudio de los desechos líquidos generados al interior de las instalaciones del laboratorio de caracterización química perteneciente al centro de estudios nucleares Lo Aguirre, ...
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(Universidad de Chile., 2005)En este trabajo se reevalúa la taxonomía de las especies empleando caracteres del epipodio y espermatozoide, se examinan las relaciones de parentesco entre los taxa utilizando diferentes aproximaciones filogenéticas.
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(PERGAMON-ELSEVIER SCIENCE LTD, 2010-05-02)Several isolates of three Fusarium species associated with the Gibberella fujikuroi species complex were characterized for their ability to synthesize gibberellins (GAs): Fusarium sacchari (mating population B), Fusarium ...