Artículos de revistas: Recent submissions
Now showing items 1381-1400 of 4968
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(Sociedad Chilena de Quimica, 2002)A new route to the electron rich pentamethylcyclopetadienyl iron complexes (n5-C5Me5)=Cp*) starting from the commercially available dimer [Cp*Fe(CO)2]2, is presented. Reaction of the dimer with I2 in CH2Cl2, affords the ...
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(Czech Academy of Sciences, 2002)The aphid parasitoid Aphidius ervi was collected and subsequently reared on Sitobion avenae on wheat or Acyrthosiphon pisum on alfalfa. Parasitoids from both origins were exposed in an olfactometer to alfalfa or wheat ...
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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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(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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(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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(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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(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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(MDPI AG, 2018)© 2018 by the authors. An experimental protocol was studied to improve the adhesion of a polymeric poly(methyl methacrylate) coating that was modified with silver nanoparticles to an aluminum alloy, AA2024. The nanoparticles ...
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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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(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, ...
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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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(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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(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/ ...
