Browsing by Title Facultad de Ciencias
Now showing items 3602-3621 of 8178
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(1972)In terms of the usual RKKY indirect exchange interaction, the spiral antiferromagnetic phase of Europium cannot be attributed to a 'nesting' of opposite faces of the tetracube portion of the Fermi surfaces. © 1972.
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(2010)We study the AB2 dimmer-connector chain within a generalized Hubbard model, which contains sitedependent parameters, and different chemical potentials for A and B sites. Considering one electron per atom, we carry out ...
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(Universidad de Chile, 1999)
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(Universisdad de Chile, 1999)organismos vivientes. Su especial configuración electrónica le permite participar en el desarrollo de diversas funciones biológicas, tales como transporte de oxigeno, fijación de nitrógeno, detoxificacion y variadas ...
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(2016)In this work, a model to explain the unusual stability of atomic lithium clusters in their highest spin multiplicity is presented and used to describe the ferromagnetic bonding of high-spin Li-10 and Li-8 clusters. The ...
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(Universidad de Chile, 1985)Entre los sistemas magnéticos cuyas propiedades termodinámicas resultan interesantes de estudiar, debido a sus posibles aplicaciones tecnológicas, se encuentran las aleaciones del tipo tierra rara-metal de transición (por ...
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(Universidad de Chile, 1986)Se estudia el comportamiento de un ferromagneto de Heisenberg incluyendo interacción bicuadrática y anisotropía uniaxial mediante el método de funciones de Green tipo Zubarev. I,as ecuaciones de movimiento de estas funciones ...
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(Universidad de Chile, 2021)
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(Springer, 2021)Let A be an abelian variety and G a finite group of automorphisms of A fixing the origin such that A/G is smooth. The quotient A/G can be seen as a fibration over an abelian variety whose fibers are isomorphic to a product ...
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Field assessment of Trypanosoma cruzi infection and host survival in the native rodent Octodon degus (2012)Chagas disease is a zoonosis caused by the flagellated parasite Trypanosoma cruzi and transmitted by triatomine insects to several mammalian species acting as reservoir hosts. In the present study, we assess T. cruzi-prevalence, ...
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(2006)Organisms living in highly heterogeneous environments are useful for examining the effects of associations between phenotypes and ecologically relevant genes in the field. Here, we tested the null hypothesis of no association ...
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(BLACKWELL, 2006-08)The foraging ecology of hummingbirds involves the exploitation of a high number of patchily distributed flowers. This scenario seems to have influenced capabilities related to learning and memory, which help to avoid ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2006-08)We assessed responses of late copepodid stages of Calanus chilensis, as subject to spatial heterogeneity in oceanographic conditions. during coastal upwelling off Mejillones Peninsula., northern Chile. An oceanographic ...
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(2002)In spite of extensive evidence showing an association between host stimuli and insect finding behaviour, the importance of carbon dioxide in attracting Triatominae is not entirely understood. We assessed the potential of ...
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(Universidad de Chile, 2004)En este proyecto se estimo el flujo de entrada de N vía la FNS en la ditrostefera de un bosque primario Nordpatagonico de Chiloé., alejado del impacto antropogénico, y se investigaron las causas de su variación. Se enfatizo ...
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(Frontiers Media S.A., 2015)Natural product search is undergoing resurgence upon the discovery of a huge previously unknown potential for secondary metabolite (SM) production hidden in microbial genomes. This is also the case for filamentous fungi, ...
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(Academic Press-Elsevier, 2016)Endemic to South America, octodontid rodents are remarkable by being the only mammal taxa where allotetraploidy has been documented. The taxon's extensive morpho-physiological radiation associated to niche shifts has allowed ...
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(Universidad de Chile, 1997)Thinocoridae es un grupo de Charadriiformes que habita exclusivamente en Suramérica. Esta familia posee dos géneros y cuatro especies, Thinocorus rumicivorus, T. orbignyianus, Attagis malouinus y A. gayi. Las relaciones ...
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(Universidad de Chile, 1997)
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(Universisdad de Chile, 2009)La terciopelo, Bothrrrops asper, es una serpiente venenosa criptica que se distribuyen ampliamente húmedos de Mesoamerica y en el noroccidente de América de Sur. A través de su rango de distribución, B. asper presenta una ...