Browsing by Title Facultad de Ciencias
Now showing items 4573-4592 of 8192
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(2005)Forest fragmentation facilitates the invasion of exotic species. This threat may be especially severe if forest fragments are surrounded by plantations of exotic species like Pinus radiata, an aggressive colonizer and ...
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(Pergamon-Elsevier Science LTD, 2018)Environmental temperature is a variable that influences all aspects of organisms, from physiological, e.g. immune function, and morphological traits to behavior. Recent studies have reported that environmental temperature ...
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Is top-down control by predators driving insect abundance and herbivory rates in fragmented forests? (2012)The effects of forest fragmentation on ecological interactions and particularly on food webs have scarcely been analysed. There is usually less herbivory in forest fragments than in continuous forests. Here we hypothesize ...
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(Royal Society Chemistry, 2017)The SNAr reaction between 1-chloro-2,4-dinitrobenzene and morpholine was used as a model system to study solvation effects in a series of mixtures involving imidazolium based ionic liquids. Iso-solvation regimes (i.e. a ...
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(Elsevier, 2015)An experimental study of the solubility and of the thermodynamic properties of solvation, between temperatures (303 and 343) K and at pressures close to atmospheric, of 2-methylpropane (isobutane) in several ionic liquids ...
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(Academic Press, 2015)©2015 Elsevier Ltd. All rights reserved. An experimental study of the solubility and of the thermodynamic properties of solvation, between temperatures (303 and 343) K and at pressures close to atmospheric, of 2methylpropane ...
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(1988)A reinvestigation of the aerial parts of Pleocarphus revolutus afforded, in addi tion to sesquiterpenes isolated previously, four new guaiane derivatives and four isocedrene derivatives, one of which is new. Furthermore, ...
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(Universidad de Chile., 1982)El presente trabajo se orientó a la determinación de las isoenzimas fosforilantes de glucosa en los hepatocitos y en las células noparenquimatosas aislados del hígado de rata.
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(1992)A new diterpenoid of mixed biogenesis; isoepitaondiol, has been isolated together with known diterpenoids and two chromones from the alga Stypopodium flabelliforme collected at Easter Island. © 1992.
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(Sociedad Española Ornitología, 2015)Eight novel microsatellites were isolated and characterised in the thorn-tailed rayadito Aphrastura spinicauda in order to evaluate genetic diversity in three contrasting populations, two of them at the boundaries of the ...
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(Humana Press, 2018)Double-stranded RNA (dsRNA) molecules are widely found in yeasts and filamentous fungi. It has been suggested that these molecules may play an important role in the evolution of eukaryote genomes and could be a valuable ...
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(2012)A total of ten microsatellite loci were isolated and characterized in the endangered freshwater catfish Trichomycterus areolatus from Chile. Samples from three separate watersheds were also analyzed. The mean number of ...
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(OXFORD UNIV PRESS, 2007)Phosphorus deficiency is one of the major nutrient stresses affecting plant growth. Plants respond to phosphate (Pi) deficiency through multiple strategies, including the synthesis of high-affinity Pi transporters. In this ...
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(1991)The genes encoding for the large (rbcL) and small (rbcS) subunits of ribulose-1,5-bisphosphate carboxylase (RuBisCO) were cloned from the obligate autotroph Thiobacillus ferrooxidans, a bacterium involved in the bioleaching ...
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(Public Library Science, 2016)Background Marine species have colonized extreme environments during evolution such as freshwater habitats. The amphidromous teleost fish, Galaxias maculatus is found mainly migrating between estuaries and rivers, but ...
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(WILEY-V C H VERLAG GMBH, 2008-05-16)The yeast Xanthophyllomyces dendrorhous is biotechnologically important due to its ability to produce the pigment astaxanthin, but is poorly understood at the genetic level. This is mainly because its preservation is ...
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Isolation, characterization, and biological activity of naphthoquinones from Calceolaria andina L. (1999)Two compounds recognized as responsible for the insecticidal activity of extracts of Calceolaria andina L. (Scrophulariaceae) have been isolated and characterized as 2-(1,1-dimethylprop-2-enyl)3-hydroxy-1,4-naphthoquinone ...
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(MDPI, 2020)Lycium minutifoliumJ. Remy (Solanaceae) is commonly used as an infusion in traditional medicine to treat stomach pain, meteorism, intestinal disorders, stomach ailments, and other severe problems including prostate cancer ...
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(Editorial Codelia, Publicaciones Científicas, 1984-11-24)On the basis of CNDO and INDO ca1culations, the trans and gauche isomers of the free radical n-perfluorobuthyl are established as the most probable structures in the conformational equilibrium. Spectral differences in ...