Browsing by Title Facultad de Ciencias
Now showing items 2354-2373 of 8178
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Does digestion rate affect diet selection? A study in Octodon degus, a generalist herbivorous rodent (Springer Verlag, 1998)Dietary chemistry and an animal digestive physiology should be considered in any explanation of behavioral patterns of food use, as both influence dietary preference. In the degu Octodon degus (Molina, 1782), a generalist ...
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(American Institute of Physics, 2020)We study the impact of deserting a pre-established path, determined by a navigation software, on the overall city traffic. To do so, we consider a cellular automaton model for vehicular traffic, where the cars travel ...
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(Springer, 2010)Pollinator-mediated selection is one of the most important factors driving adaptation in flowering plants. However, as ecological conditions change through habitat loss and fragmentation, the interactions among species ...
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(Springer, 2020)For a prey, its best ticket to stay alive is to get early and accurate information on predation risk and so, escape from predation at low cost. Some prey species have evolved the ability to eavesdrop signals intended for ...
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(Association of Field Ornithologists, 2004)Cover at nesting sites selected by breeding birds can reduce the risk of nest predation. Using artificial nests, we tested whether dense cover reduces nest predation upon understory birds (rhinocryptids) in temperate forest ...
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(Public Library Science, 2016)Herbivory has been long considered an important component of plant-animal interactions that influences the success of invasive species in novel habitats. One of the most important hypotheses linking herbivory and invasion ...
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(Elsevier, 2016)Variation in the facial width-to-height ratio (fWHR) maps onto a number of behavioral and psychological traits among men (e.g., aggression, unethical behavior, negotiation performance). Importantly, observer judgments of ...
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(Springer, 2020)In high-mountain habitats, summer frost events can have negative consequences for plant fitness. Despite this, most studies have evaluated the consequences of frosts for vegetative structures of perennial plants, and neither ...
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(Springer, 2015)Forestry plantations supporting native species exhibit a dense understory, which might reduce bat activity within plantations. We compared bat activity in Monterrey pine plantations with and without an understory in ...
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(COLD SPRING HARBOR LAB PRESS, 2007-08)FtsZ has two domains, the amino GTPase domain with a Rossmann fold, and the carboxyl domain that resembles the chorismate mutase fold. Bioinformatics analyses suggest that the interdomain interaction is stronger than the ...
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(2003)The binding of MgATP and fructose-6-phosphate to phosphofructokinase-2 from Escherichia coli induces conformational changes that result in significant differences in the x-ray-scattering profiles compared with the unligated ...
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(Centers Disease Control & Prevention, 2022)Dissemination of carbapenemase-encoding plasmids by horizontal gene transfer in multidrug-resistant bacteria is the major driver of rising carbapenem-resistance, but the conjugative mechanics and evolution of clinically ...
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(Universidad de Chile, 2012)Damos un dominio fundamental “virtual” para la acción sobre C. x R de Ias unidades totalmente positivas E(k)+ de un cuerpo de números k, provisto de exactamente un par de incrustaciones complejas y r incrustaciones reales ...
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(Elsevier, 2003)The petrosal ganglion (PG) provides sensory innervation to the carotid sinus and carotid body through the carotid (sinus) nerve (CN). Application of either acetylcholine (ACh) or adenosine 5′-triphosphate (ATP) to the PG ...
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(1999)We have recently reported that application of acetylcholine (ACh) or nicotine to the petrosal ganglion - the sensory ganglion of the glossopharyngeal nerve - elicits a burst of discharges in the carotid nerve branch, ...
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(Elsevier Science Inc., 1998-07-07)The dopaminergic and antioxidant properties of pukateine [(R)-11-hydroxy-1,2-methylenedioxyaporphine, PUK], a natural aporphine derivative, were analyzed in the rat central nervous system. At dopamine (DA) D1 ([3H]-SCH ...
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(Elsevier, 2014)It has been suggested that respiratory stress is involved in the mechanism underlying the dormancybreaking effect of hydrogen cyanamide (H2CN2) and sodium azide in grapevine buds; indeed, reductions in oxygen levels ...
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(Universidad de Chile, 2010)Objetivos: Optimizar la técnica de irradiación total de piel con electrones (TSEI) desarrollada en la unidad de radioterapia de Clínica Alemana de Santiago. Materiales y métodos: Se utilizaron técnicas de dosimetría ...
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(BLACKWELL PUBLISHING, 2006-02)Molecules of the title compound, C12H11N3O3, are linked into zigzag chains by O - H center dot center dot center dot N hydrogen bonds. The crystal structure is further stabilized by pi-pi stacking interactions.