Repositorio Académico de la Universidad de Chile: Recent submissions
Now showing items 44301-44320 of 98648
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(2002)We examined the interaction between vertical and horizontal distribution of fish larvae off Mejillones Peninsula (23°S), northern Chile, under conditions of active coastal upwelling. An oceanographic survey covered spatial ...
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(American Ornithologist Society, 2002)We studied the effect of forest fragmentation on the nesting biology and reproductive success of three species of tapaculos (Rhinocryptidae) in relation to forest size, edge effects, and disturbance from livestock or logging ...
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(Institute of Arctic and Alpine Research, 2002)Postdispersal seed predation in alpine communities has received surprisingly little attention. We evaluate the magnitude of seed predation by ants and avian granivores in the perennial herb Sisyrinchium arenarium through ...
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(2003)We present an approach to the construction of action principles (the inverse problem of the calculus of variations), for first order (in time derivatives) differential equations, and generalize it to field theory in order ...
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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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(2002)Apparent competition occurs when species that otherwise may not directly interact still exhibit negative indirect effects on one another because they share a food-limited predator (enemy). Even though this type of indirect ...
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(2002)Competition between phytophagous insects could be mediated by differential impact of natural enemies or by induced changes in host plant quality. The interaction between the aphids Sipha flava and Rhopalosiphum maidis on ...
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(2001)Diterpenoids with trichomonicidal activity were isolated from the aerial parts of Azorella yareta Hauman. One was 13β-hydroxyazorellane, together with the known constituents mulinolic acid, mulin-11,13-dien-20-oic acid, ...
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(Universidad de Chile, 2018)En las últimas décadas, el vertiginoso avance de la televisión ha sido materia de análisis de distintas disciplinas, desde el aspecto propiamente mediático-comunicacional, hasta su impacto político, social y cultural. Su ...
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(NLM (Medline), 2018)Copyright © 2018 Campbell et al. For insects that depend on one or more bacterial endosymbionts for survival, it is critical that these bacteria are faithfully transmitted between insect generations. Cicadas harbor two ...
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(Company of Biologists Ltd, 2018)© 2018. Published by The Company of Biologists Ltd. Xenografts of the hematopoietic system are extremely useful as disease models and for translational research. Zebrafish xenografts have been widely used to monitor blood ...
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(Escuela de Ciencias del Mar, 2018)© 2018, Escuela de Ciencias del Mar. All rights reserved. The present study provides new documented cases of abnormalities on chitons (hypomerism and coalescence of shell plates), in addition to four new cases on keyhole ...
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(Sociedad Chilena de Quimica, 2018)© 2018 Sociedad Chilena de Quimica.all rights reserved. Phytochemical analysis of Azorella compacta resulted in the isolation of six known diterpenes and one unknown norditerpene using chromatographic methods. The structure ...
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(Institute of Physics Publishing, 2018)© 2018 IOP Publishing Ltd. A general mathematical expression to estimate the temperature in computer simulations of constrained systems is obtained. Using a recently derived theorem which relates the ensemble average of ...
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(Frontiers Media S.A., 2018)© 2007-2018 Frontiers Media S.A. All Rights Reserved. Poly-extremophiles microorganisms have the capacity to inhabit hostile environments and can survive several adverse conditions that include as variations in temperature, ...
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A Tomato Tocopherol-Binding Protein Sheds Light on Intracellular α-Tocopherol Metabolism in Plants (NLM (Medline), 2018)Tocopherols are non-polar compounds synthesized in the plastids, which function as major antioxidants of the plant cells and are essential in the human diet. Both the intermediates and final products of the tocopherol ...
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(Universidad Austral de Chile, 2018)© 2018, Universidad Austral de Chile. All rights reserved. Forest monitoring is important for decision making of forest management and conservation. In Chile, the forest monitoring system was initiated in 1994, which has ...
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(MDPI AG, 2018)© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/ ...
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(AAGR Aerosol and Air Quality Research, 2018)© Taiwan Association for Aerosol Research. We present the results of a neural network model designed for the forecasting of hourly PM2.5 concentrations in Santiago, Chile. The study focuses on the observed values at two ...
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(Elsevier Inc., 2018)Consumption of psychoactive substances is a long-standing tradition among indigenous peoples of the Americas. Archaeologically, consumption of tobacco has been shown through analysis of archaeological smoking pipe residues, ...
