Browsing by Title Facultad de Ciencias
Now showing items 5287-5306 of 8177
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(2011)Background - Habitat fragmentation may have detrimental effects on both plant-mutualistic (i.e. pollination) and plant-antagonistic interactions (i.e. foliar herbivory). Such double negative effects may lead to a change ...
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(Springer, 2004)Studies on plant-pollinator interactions have largely neglected the potential negative effects of the predators of pollinators on seed output, even though anti-predatory behaviour of pollinators may affect visitation ...
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(2012)The outcome of the dispersal process in zoochorous plants is largely determined by the behavior of frugivorous animals. Recent simulation studies have found that fruit removal rates and mean dispersal distances are strongly ...
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(1987)A new neo-clerodane dilactone, desoxyarticulin, and dihydrotucumanoic acid, together with other known compounds, were isolated from Baccharis pedicellata and Baccharis marginalis. The structures of the new compounds were ...
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Neogenin1 is a Sonic Hedgehog target in medulloblastoma and is necessary for cell cycle progression (UICC, 2014)The canonical Sonic Hedgehog (Shh)/Gli pathway plays multiples roles during central nervous system (CNS) development. To elucidate the molecular repertoire of Shh mediators, we have recently described novel transcriptional ...
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(Elsevier, 2013)Nicotine is an agonist of nicotinic acetylcholine receptors (nAChRs)that has been extensively used as a template for the synthesis of a4b2-prefer ring nAChRs.Here,we used the N-methyl-pyrrolidine moiety of nicotine to ...
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(2013)Nicotine is an agonist of nicotinic acetylcholine receptors (nAChRs) that has been extensively used as a template for the synthesis of α4β2-preferring nAChRs. Here, we used the N-methyl-pyrrolidine moiety of nicotine to ...
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(Elsevier, 2013)This paper discusses a well-represented fossil record of cartilaginous fishes (Chondrichthyes) from southern South America. The recovered samples allow the recognition of three assemblages with chronostratigraphic and ...
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(Wilson Ornithological Soc, 2016)We present descriptions of nest architecture, clutch size, nestling growth and nestling attendance for the Fire-eyed Diucon (Xolmis pyrope), based on nests found at the Fray Jorge National Park, Chile, at the northernmost ...
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(BRILL ACADEMIC PUBLISHERS, 2006-07)Nest-mate recognition and territorial behaviour in ants are widely studied phenomena. However, few studies have analysed, under field conditions, how nest-mate recognition varies with distance from the resident's colony. ...
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(ROYAL SOC, 2007-11-01)In eusocial Hymenoptera, females are more tolerant towards nest-mate than towards non-nest-mate females. In solitary Hymenoptera, females are generally aggressive towards any conspecific female. Field observations of the ...
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(Royal Society, 2008)In eusocial Hymenoptera, females are more tolerant towards nest-mate than towards non-nest-mate females. In solitary Hymenoptera, females are generally aggressive towards any conspecific female. Field observations of the ...
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(American Ornithologist Society, 2002)We studied the effect of forest fragmentation on the nesting biology and reproductive success of three species of tapaculos (Rhinocryptidae) in relation to forest size, edge effects, and disturbance from livestock or logging ...
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(2008)The Xylocopinae contains four tribes with species which show a range of nesting habits, from solitary to social. The Manueliini is the sister group to all other Xylocopine tribes, with one genus, Manuelia, of three species ...
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(Soc. Biolgia Chile, 2016)Background: In one-piece nesting termites, which nest and forage in a single piece of wood, soldier production increases during the swarming period, i.e. when the risk of invasion of their substrate and hence of their ...
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(MDPI, 2021)Glioblastoma (GBM) is the most aggressive and common primary tumor of the central nervous system. It is characterized by having an infiltrating growth and by the presence of an excessive and aberrant vasculature. Some of ...
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(Universisdad de Chile, 2016)Las NETRINAS son proteínas secretadas pertenecientes a la familia de laminas que se expresan en el Sistema Nervioso Central (SNC) DURANTE EL DESARROLLO. Fueron descritas originalmente como factores de guiá axonal y migración ...
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(Universisdad de Chile, 2014)Neogenina 1,homologo del receptor "Deleted in Colorectal Cancer" (DCC), es un receptor transmembrana implicado en guiá axonal, aniogenesis, diferenciación neuronal, morfogenesis y muerte celular (apoptosis). Este receptor ...
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(Kluwer Academic/Plenum Publishers, 1996)1. Expression of the apamin-sensitive K+ channel (SK+) in rat skeletal muscle is neurally regulated. The regulatory effect of the nerve over the expression of some muscle ion channels has been attributed to the electrical ...
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(Universidad de Chile, 2023)El estudio de las aves suboscinas (sub-orden del orden Passeriformes) ha sido opacado por el estudio del sub-orden hermano, las aves cantoras oscinas, debido a la extensa evidencia de repertorios vocales amplios y ...