Browsing by Title Facultad de Ciencias
Now showing items 5449-5468 of 8175
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(Universidad de Chile, 2011)El mitógeno Sonic hedgehog (Shh) participa en el desarrollo del Sistema nervioso Central (SNC), jugando un rol clave en ia proliferación de progenitores neurales, entre otros. C-myc es un potente proto-oncogen y regulador ...
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(Univ Valparaíso, 2015)We report the mass stranding of 46 false killer whales in the Strait of Magellan in February 2013. We present observation-based information about body size, sex, dental formula and necropsies. Sexual dimorphism in body ...
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(Universidad de Chile., 2018-01)La condición basal para synapsida es tener un astrágalo que en su cara posterior articula con la cara anterior del calcáneo, ambos elementos en el mismo plano del eje dorso-vental. Además, presentan un elemento basipodial ...
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(Universidad de Chile, 1993)
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(Universidad de Chile, 1993)
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(Universidad de Chile, 2019)Los aisladores topológicos a grandes rasgos son aisladores en el bulto y presentan estados de borde metálicos que están protegidos por alguna simetría del sistema, mediciones ARPES han logrado detectar estos estados, ...
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(Universidad de Chile, 2010)
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(Universisdad de Chile, 2016)El trabajo realizado consistió de la síntesis de materiales a base de sulfuro de reino (ReS2) y el desempeño de una nueva nanoestructura en una reacción de hidrodesulfuracion (HDS). Este estudio se baso en el diseño e ...
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Nuevos sistemas supramoleculares : compuestos de inclusión de matrices binarias de urea y tiourea (Universidad de Chile, 2002)Esta tesis constituye una incursión y contribución al conocimiento de la química supramolecular y de la química de las interacciones sutiles en el ámbito de compuestos polimoleculares derivados de las matrices binarias de ...
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(2003)For difference systems, the new concept expo-(h,k) dichotomy is introduced and exhaustively studied for being used in the asymptotic equivalence of null solutions. An application to Poincaré equations is shown.
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(Blackwell Publishing Ltd, 2015)© 2014 German Botanical Society and The Royal Botanical Society of the Netherlands.The component Allee effect has been defined as 'a positive relationship between any measure of individual fitness and the number or density ...
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(Wiley-Blackwell, 2015)The component Allee effect has been defined as a positive relationship between any measure of individual fitness and the number or density of conspecifics'. Larger plant populations or large patches have shown a higher ...
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(1992)We present a variational approach to the Heisenberg antiferromagnetic model for spin 1/2 and anisotropic exchange, with an external longitudinal and transverse magnetic field. In the one-dimensional case, we calculate ...
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(1982)Using the Green function technique, the authors calculate the transition probability amplitude for one atom interacting with a one-mode electromagnetic field, without assuming the rotating-wave approximation (RWA). The ...
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(Taylor and Francis, 2016)In this work, the Lieb-Thirring kinetic energy bound is numerically examined for a variety of systems: the hydrogen-like atoms, neutral atoms, isoelectronic series of atomic ions, the Hooke's atom and some small molecules. ...
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(SOCIEDAD BIOLOGIA CHILE, 2006-09)Nurse effects, which occur when one plant species enhances the survival or growth of another plant species, are predicted to be most relevant in stressful environments. These effects are particulary important during seedling ...
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(Universisdad de Chile, 2009)A partir del cambio de estado ocurrió en el humedal rio Cruces durante el año 2004 desaparece la población de macrofitas acuáticas dominantes, Egeria dansa. De acuerdo a ello, una de las hipótesis que intenta explicar el ...
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(Wiley, 2021)Environmental conditions experienced by developing animals have an impact on the development and maturity of the immune system. Specifically, the diet experienced during early development influences the maintenance and ...
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(1989)Cytochrome P450-dependent oxidation of arachidonic acid was studied in liver microsomes from normal fed, protein-energy malnourished, and refed rats. The overall rate of arachidonic acid oxidation was very similar in ...