Browsing by Title Facultad de Ciencias
Now showing items 4499-4518 of 8178
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(2012)Since the preferential body temperature should positively correlate with physiological performance, behavioural fever should enhance an organism's immune response under an immune challenge. Here we have studied the ...
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(The Company of Biologist, 2014)Mammals exposed to low temperatures increase their metabolic rate to maintain constant body temperature and thus compensate for heat loss. This high and costly energetic demand can be mitigated through thermoregulatory ...
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(Frontiers Research Foundation, 2014)A growing set of observations points to mitochondrial dysfunction, iron accumulation, oxidative damage and chronic inflammation as common pathognomonic signs of a number of neurodegenerative diseases that includes Alzheimer's ...
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(2004)The neural crest is a population of cells that originates at the interface between the neural plate and non-neural ectoderm. Here, we have analyzed the role that Notch and the homeoprotein Xiro1 play in the specification ...
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(Universidad de Chile, 2021)Salinization and pollution (e.g., agrochemicals) are two main environmental stressors leading to degradation of aquatic ecosystems and consequently alteration in their biological communities. Amphibians are a highly ...
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(Elsevier, 2012)Although the study of thermoregulation in insects has shown that infected animals tend to prefer higher temperatures than healthy individuals, the immune response and energetic consequences of this preference remain ...
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(American Ornithological Society, 2017)© 2017 American Ornithological Society. Nest morphology can affect the breeding success of birds. Thus, birds inhabiting different environments may experience divergent selection for nest structure and composition that ...
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(Universisdad de Chile, 2015)Este trabajo de tesis se centra en estudiar la interacción entre bioanalitos de diferentes complejidad molecular con nanoparticulas de plata coloidal (AgNps) obtenidas por reduccion del ion Ag+ mediante clorhidrato de ...
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(Frontiers Media, 2021)Communication with bacteria deeply impacts the life history traits of their hosts. Through specific molecules and metabolites, bacteria can promote short- and longterm phenotypic and behavioral changes in the nematode ...
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(Czech Academy of Sciences, 1997)In olfactometric experiments a wingless adult of Sitobion avenae was attracted by odours of a wingless adult of Rhopalosiphum padi feeding on a wheat plant. When the stimulus consisted of either a wingless R. padi without ...
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(2011)Frizzled/planar cell polarity (Fz/PCP) signaling controls the orientation of sensory bristles and cellular hairs (trichomes) along the anteroposterior axis of the Drosophila thorax (notum) [1-4]. A subset of the ...
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(Marcel Dekker Inc., 1998)Let (E, Q) be a finite dimensional quadratic vector space over a finite field. For the natural representation π of the isometry group G of (E, Q) in the space L2(E) of all complex valued functions on E, we analyse when the ...
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(Universidad de Chile, 2011)La sobrevida de un órgano trasplantado depende del control de la respuesta inmune contra el injerto. El uso de medicamentos inmunosupresores permite controlar la respuesta Inmune, sin embargo, estas drogas tienen ...
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Intestinal epithelia (Caco-2) cells acquire iron through the basolateral endocytosis of transferrin (1996)Although the absorption of iron through the intestinal epithelia is inversely related to body iron stores, the mechanisms by which the enterocytes sense body iron stores are unknown. Polarized enterocytes have transferrin ...
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(MDPI, 2021)Land-use changes are one of the most important drivers of zoonotic disease risk in humans, including helminths of wildlife origin. In this paper, we investigated the presence and prevalence of intestinal helminths in wild ...
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(ELSEVIER SCIENCE BV, 2006-10-01)Partial substitutions of Mn by a transition metal Me in the rare-earth manganites REMexMn1-xO3 results in the simultaneous presence of Mn3+ and Mn4+, triggering double exchange ferromagnetic mechanisms. The RE sublattice ...
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(2002)Allometry of haematological parameters (haematocrit, erythrocyte number, mean cell volume and haemoglobin concentration) of Basilichthys australis, suggested that small individuals and juveniles had larger red blood cells, ...
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(Kluwer Academic/Plenum Publishers, 1999)Experimental tests were conducted to determine whether females and males of the tree-dwelling lizard Liolaemus tenuis (Tropiduridae) show intraspecific chemical recognition during breeding and postreproductive seasons. ...
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(SOCIEDAD BIOLGIA CHILE, 2005-06)Studies of metabolic capacities in rodents have been largely Studied at an inter-specific levels, but physiological capacities of populations belonging to the same species have received lesser attention. Here we studied ...
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(Sociedad de Biologia de Chile, 2005)Studies of metabolic capacities in rodents have been largely studied at an inter-specific levels, but physiological capacities of populations belonging to the same species have received lesser attention. Here we studied ...