Browsing by Title Facultad de Ciencias
Now showing items 3564-3583 of 8178
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(International Association for Vegetation Science, 2015)QuestionThe biotic resistance hypothesis states that species diversity is a barrier for plant biological invasions because alien species are more likely to find strong competitors as diversity of native plants increases. ...
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(Universidad de Chile, 2014)
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(Universisdad de Chile, 2016)El desarrollo del sistema radicular de una planta ocurre post embrionariamente y esta dirigido por programa endogeno y por la integración de señales ambientales, lo que permite al individuo explorar de manera continua el ...
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(Universidad de Chile, 1996)La hipótesis planteada en esta Tesis es que S. typhi. expone en su superficie factores de virulencia que le otorgan la capacidad de resistir al macrófago humano. Estos factores de virulencia serian esenciales para ...
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(Universidad de Chile, 2005)El objetivo central de esta tesis fue estudiar el(los) factores ( es) derivados del tejido muscular dañado capaces de inducir la diferenciación miogénica de células troncales mesenquimáticas de la médula ósea. Para ...
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(Universidad de Chile, 2018)La pérdida y degradación de los bosques templados de Sudamérica son perturbaciones que alteran la estructura del hábitat, lo que puede repercutir negativamente sobre las especies dependientes del bosque, como es el caso ...
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(Universidad de Chile, 2020)La malaria aviar es una enfermedad causada por parásitos sanguíneos pertenecientes a los géneros protozoarios Plasmodium, Haemoproteus y Leucocytozoon. La transmisión comienza con la picadura de moscas y/o mosquitos ...
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(Universidad de Chile, 1995)
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(Universidad de Chile, 1994)
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(Universisdad de Chile, 2015)El trafico, entendido como el transporte a través de los distintos organelos que componen el sistema de endomembranas (endosomas, vacuola, retículo, etcetera), es fundamental para la célula vegetal durante su desarrollo ...
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(Elsevier GmbH., 2013)The nurse-protégé hypothesis states that adult plants of one species provide micro-environmental conditions that favor the establishment of seedlings of a second species with no effect for the first species. Several studies ...
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(2011)The rate of pollen exchange within and among flowers may depend on pollinator attraction traits such as floral display size and flowering plant density. Variations in these traits may influence pollinator movements, pollen ...
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(Universidad de Chile, 2010)
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(Institute of Physics Publishing, 2005)We explore the nature of the faint blue objects in the Hubble Deep Field-South. We have derived proper motions for the point sources in the Hubble Deep Field-South using a 3 yr baseline. Combining our proper-motion ...
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(2007)We study the transport of atoms across a localized Bose-Einstein condensate in a one-dimensional optical lattice. For atoms scattering off the condensate, we predict total reflection as well as full transmission for certain ...
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(2005)We study resonant light scattering in arrays of channel optical waveguides in which tunable quadratic non-linearity is introduced as nonlinear defects by periodic poling of single (or several) waveguides in the array. We ...
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(2011)We study the scattering of magnetoinductive plane waves by internal (external) capacitive (inductive) defects coupled to a one-dimensional split-ring resonator array. We examine a number of simple defect configurations ...
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(Optical Society of America (OSA), 2009)We study a waveguide array with an embedded nonlinear saturable impurity. We solve the impurity problem in closed form and find the nonlinear localized modes. Next, we consider the scattering of a small-amplitude plane ...
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(MDPI AG, POSTFACH, CH-4005 BASEL, SWITZERLAND, 2016)A small Chilean variety of pears growing in the town of Toconao, an oasis located at the northeastern edge of the Salar de Atacama, northern Chile, was studied by means of modern PDA and high resolution mass spectral data ...
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(Pergamon Journals Ltd., 1987-01-25)8attus archidamas larvae reared on Aristolochia chilensis sequester aristolochic acids selectively and independently of lipophilícíty. A considerable proportion of the ingasted acids can be recovered from the excreta, but ...