Browsing by Title Facultad de Ciencias
Now showing items 4557-4576 of 8178
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(2012)Iron is an essential element for life on earth, participating in a plethora of cellular processes where one-electron transfer reactions are required. Its essentiality, coupled to its scarcity in aqueous oxidative environments, ...
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(1994)Infrared spectra in the region 4000-70 cm-1 are recorded for [1,2-bis(diphenylphosphino)methane](triphenylphosphite)bromo (cis,cis- and trans-dicarbonyl)manganese, and η5-cyclopentadienyl-[1,2-bis(diphenylphosphino)ethan ...
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(2001)Calreticulin, a molecular chaperone involved in the folding of endoplasmic reticulum synthesized proteins, is also a shock protein induced by heat, food deprivation, and chemical stress. Mobilferrin, a cytosolic isoform ...
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(ELSEVIER SCIENCE BV, 2010-06-18)Aloe barbadensis Miller, known as Aloe Vera, requires limited irrigation depending on the capacity of the soil to retain humidity, since it is a CAM species and thus naturally adapted to conditions of dryness and high ...
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The Irx gene family in zebrafish: genomic structure, evolution and initial characterization of irx5b (SPRINGER, 2004-04-03)Genes of the iroquois (Iro/Irx) family are highly conserved from Drosophila to mammals and they have been implicated in a number of developmental processes. In flies, the Iro genes participate in patterning events in ...
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(2007)Bud-break and the length and depth of endodormancy (ED) were studied in grapevine (Vitis Vinifera L.) cv. Thompson Seedless (Sultana) grown in the Elqui (warm winter) and in the Maipo (temperate winter) valleys of north ...
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(OXFORD UNIV PRESS, 2008-04)Background and Aims Adaptation to different pollinators is thought to drive divergence in flower colour and morphology, and may lead to interspecific reproductive isolation. Floral diversity was tested for association with ...
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(Springer, 2013)It has been suggested that a respiratory stress is part of the mechanism through which the dormancy-breaking compounds, hydrogen cyanamide (HC) and sodium azide, induce the release of buds from the endodormancy (ED) ...
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(Frontiers Media S.A., 2016)© 2016 Maldonado, Sabat, Piriz, Bogdanovich, Nespolo and Bozinovic. Food availability varies substantially throughout animals' lifespans, thus the ability to profit from high food levels may directly influence animal ...
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(SOCIEDAD BIOLOGIA CHILE, 2006-06)In recent years natural history has been derided by some scientists as an old-fashion endeavor that does not follow the model of "hard" science and therefore should be considered "dead" and replaced by modern ecology, ...
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(2009)In many hummingbird species there is an opposite pattern of sexual dimorphism in bill length and other morphometric measures of body size. These differences seem to be closely related with differences in foraging ecology ...
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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.