Browsing by Title Facultad de Ciencias
Now showing items 4634-4653 of 8176
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(2009)Complexes of Europium(III) and Terbium(III) with 2,2-bipyridine and 1,10-phenanthroline were inserted into Na-bentonite by ion exchange reactions at room temperature. The products display interlaminar distances and ...
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(Elsevier , Science Ltd., 2008-09-28)Complexes of Europium(III) and Terbium(III) with 2,2-bipyridine and 1,10-phenanthroline were inserted into Na-bentonite by ion exchange reactions at room temperature. The products display interlaminar distances and ...
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(Springer-Verlag, 2014)Lakes formed in the Aysén region of southern Chile after the retreat of mountain glaciers, established by ~17,900 calendar years before present (cal years BP) or earlier, contain numerous late-glacial and Holocene tephra ...
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(European Geosciences Union&the American Geophysical Union, 2014)Abstract. Propagation of large-amplitude waves in plasmas is subject to several sources of nonlinearity due to relativistic effects, either when particle quiver velocities in the wave field are large, or when thermal ...
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(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2004-09)Although many factors have been shown to influence the evolution of species recognition signals in a wide variety of taxa, it is difficult to draw general conclusions because of fundamental differences in the morphologies ...
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(PeerJ, 2017-05-31)While large mass mortality events (MMEs) are well known for toothed whales, they have been rare in baleen whales due to their less gregarious behavior. Although in most cases the cause of mortality has not been conclusively ...
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Las instituciones religiosas en la transformación normativa contemporánea en la sexualidad en Chile (2008)Este texto analiza la relación entre orientaciones normativas de las instituciones religiosas y las prácticas sexuales de los sujetos, más precisamente los efectos de la adscripción y la observancia en contexto de ...
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(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2003-11)We report multiproxy analyses of a sediment core obtained from Laguna Aculeo that spans the past 7500 years. Laguna Aculeo (33degrees50'S, 70degrees55'W) is one of the few natural inland lakes located in the Mediterranean ...
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(MDPI, 2022)We undertook multi-proxy analyses on two sediment cores from Lago Pato, a small lake basin at 51 degrees S topographically separated from Lago del Toro in Torres del Paine (TdP), to provide insights into glacier dynamics ...
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(Elsevier B.V., 2016)© 2016 Elsevier B.V. We present a reconstruction of environmental changes from sediments of high-altitude Laguna Chepical in the subtropical Andes of Central Chile (32°16′S; 70°30′W, 3050 m a.s.l.) for the past 3100 years. ...
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(Asociacion Paleontologica Argentina, 2015)A description is provided of the first sauropod remains (i.e., isolated vertebrae and appendicular bones) from the Late Jurassic of Aysen, in Chilean Patagonia (Toqui Formation, late Tithonian). Although the bones found ...
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(Wiley, 2015)Aim In deserts, past climate change (and particularly past rainfall variability) plays a large role in explaining current plant species distributions. We ask which species were most and which were least affected by changes ...
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(1991)Fossil beetles and pollen were examined from an intermorainal bog at Puerto Edén, Isla Wellington, Chile (latitude 49°08'S, longitude 74°25'W). Wood from near the base of the section has an age of 12 960 ± 150 yr BP. ...
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(2006)Plant macrofossils from 33 rodent middens sampled at three sites between 2910 and 3150 m elevation in the main canyon of the Río Salado, northern Chile, yield a unique record of vegetation and climate over the past 22,000 ...
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(1988)Late-glacial-Holocene forest history of southern Isla Chiloé (latitude 43°10′ S) was reconstructed on the basis of pollen analysis in three profiles (Laguna Soledad, Laguna Chaiguata, Puerto Carmen). Prior to 12,500 yr ...
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(Archivos Latinoamericanos Nutricion, 2014)The Latin American Network of Food Composition Data System (LATINFOODS) is the regional data center of the global network "International Network on Food Data Systems" (INFOODS) co-sponsored by the Food and Agriculture ...
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(Elsevier, 2016)Floating seaweeds are important dispersal vehicles for many organisms in cold-temperate waters between latitudes 30 and 60. Molecular studies suggested that long-distance rafting of seaweeds is more prevalent at the polar ...
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(Springer, 2020)Latitudinal diversity patterns in marine species are commonly estimated from literature records, which at times are incomplete and/or biased. Advances in molecular phylogenetics have contributed to avoid this bias, clarifying ...
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(Elsevier, 2020)Latitudinal gradients are well-suited systems that may be helpful explaining distribution of haemosporidian parasites and host susceptibility. We studied the prevalence, diversity and drivers of haemosporidian parasites ...
