Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 19686-19705 of 20468
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(Springer, 2020)Kiruna-type iron oxide-apatite (IOA) deposits constitute an important source of iron and phosphorus, and potentially of rare earth elements (REE). However, the origin of IOA deposits is still a matter of debate with models ...
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(Soc Economic Geologists, 2016)Although studies have proposed that iron oxide-apatite (IOA) deposits may represent the deeper roots of some Andean iron oxide copper-gold (IOCG) systems, their genetic links remain obscure and controversial. A key ...
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(Elsevier, 2021)Penguins dominate the Antarctic avifauna. As key animals in the Antarctic ecosystem, they are monitored to evaluate the ecological status of this pristine and remote region and specifically, they have been used as ...
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(Elsevier, 2015)Iron oxide-apatite (IOA) deposits are an important source of iron and other elements (e.g., REE, P, U, Ag and Co) vital to modern society. However, their formation, including the namesake Kiruna-type IOA deposit (Sweden), ...
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(Elsevier, 2015-04)Agua Rica is a world-class Cu (Mo–Au) deposit located in Catamarca, Argentina, in which the porphyry and high sulfidation epithermal stages are juxtaposed due to the telescoping of the mineralizing system. Pyrite is the ...
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(Springer, 2015)The 3.1 Ga Nuggihalli greenstone belt in the Western Dharwar craton is comprised of chromitite-bearing sill-like ultramafic-mafic rocks that are surrounded by metavolcanic schists (compositionally komatiitic to komatiitic ...
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(Springer, 2020)
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(Elsevier, 2015)When using Acoustic Emission (AE) technologies, tensile, compressive and shear stress/strain tests can provide a detector for material deformation and dislocations. In this paper improvements are made to standardise ...
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(Public Library Science, 2018-05)Genome-scale metabolic models have become the tool of choice for the global analysis of microorganism metabolism, and their reconstruction has attained high standards of quality and reliability. Improvements in this area ...
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(Universidad de Chile, 2017)El Complejo Volcánico Quetrupillán consiste en un estratovolcán construido sobre una caldera de colapso y una serie de centros adventicios distribuidos principalmente en su flanco sur. Está ubicado en el centro de una ...
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(EDP Sciences, 2016)Aims. Previous literature suggests that the densest structures in the interstellar medium form through colliding flows, but patent evidence of this process is still missing. Recent literature proposes using SiO line emission ...
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(EDP Sciences, 2010-11)Aims. We study the 12C/13C isotopic ratio in the disk of the central molecular zone and in the halo to trace gas accretion toward the Galactic center region in the Milky Way. Methods. Using the IRAM30m telescope, we ...
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(2014-12-20)We present the first results of neutral carbon ([Ci] 3P1–3P0 at 492 GHz) and carbon monoxide (13CO, J = 1–0) mapping in the Vela Molecular Ridge cloud C (VMR-C) and the G333 giant molecular cloud complexes with the NANTEN2 ...
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(Universidad de Chile, 2022)
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(IOP PUBLISHING LTD, 2012-03-20)We present a Chandra, Suzaku and Rosat study of the hot Intra Group Medium (IGrM) of the relaxed fossil group/ poor cluster RXJ 1159+5531. This group exhibits an advantageous combination of flat surface brightness profile, ...
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(MDPI, 2020)High-resolution mineral characterization performed on mine material from a giant porphyry copper deposit shows that critical and precious metals, such as cobalt, lanthanum, gold, silver, and tellurium, are concentrated in ...
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(I S A-THE INSTRUMENTATION SYSTEMS AUTOMATION SOC, 2006-07)A new cascade passivity-based control scheme for tracking purposes is proposed in this paper. The proposed scheme is valid for a certain class of nonlinear systems even with unstable zero dynamic, and it is also useful for ...
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(ACM, 2016)Little is known about how software performance evolves across software revisions. The severity of this situation is high since (i) most performance variations seem to happen accidentally and (ii) addressing a performance ...
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(Universidad de Chile, 2018)Esta tesis se enfoca en resolver el problema del multi-target tracking en ambientes altamente dinámicos, y utilizando robots que poseen baja capacidad de procesamiento y sensores limi- tados. Para esto se utiliza un nuevo ...
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(JOHN WILEY, 2006-02)The well-known "ant" defined by C Langton on a grid with black and white squares is forced by periodical binary sequences {r(m)}, as follows: i) The ant turns 90 degrees to the left (right) if it enters a white (black) ...