Browsing by Title Artículos de revistas
Now showing items 5373-5392 of 7549
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(Elsevier, 2020)
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(Springer New York LLC, 2019)© 2018, International Association for Mathematical Geosciences. Chile has a rich, but poorly known history of placer gold mining. At present, this sector is almost nonexistent and there are some restrictions for its revival: ...
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(Universidad de la Frontera, 2019)The island of Rapa Nui, also called Té Hé Pito o Té Henúa or the navel of the world, is home to one of the, until recently, most isolated and enigmatic villages of the world, with their ancestral customs characterized by ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2008-03)Sedimentological and paleontological studies, including foraminifera, ostracodes, gastropods, and trace fossils, were carried Out on Neogene sedimentary successions and offshore boreholes of south-central Chile (similar ...
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(ELSEVIER, 2008-06)Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans are two of the most important bacteria in heap bioleaching processes of copper sulphide at common operating temperatures (18-24 degrees C). In this paper, both ...
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(Amer Geophysical Union, 2015)Many efforts have been made to quickly estimate the maximum runup height of tsunamis associated with large earthquakes. This is a difficult task because of the time it takes to construct an accurate tsunami model using ...
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(Mineralogical Soc Amer, 2015)Environmental mineralogy is rapidly expanding in technological directions that allow for the detection, characterization, and understanding of non-crystalline and poorly crystalline phases, crystalline-amorphous mixed ...
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(2013)The rapid determination of its magnitude soon after a great earthquake is necessary for the issuing of effective tsunami warnings, as demonstrated in the great earthquake off Tohoku district in Japan on March 11, 2011. ...
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(Copernicus Publications, 2009)Climate and ocean ecosystem variability has been well recognized during the twentieth century but it is unclear if modern ocean biogeochemistry is susceptible to the large, abrupt shifts that characterized the Late ...
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(Taylor and Francis Ltd., 2019)A rapid screening method is described for the determination of paralytic shellfish toxins (PST), in fresh marine vectors (bivalves and gastropods), at levels ranging from 0.05 to 5.0 mg STX-eq kg−1. PST are extracted from ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2005-05)The east-vergent Chucal thrust system, off the east side of the Chapiquina-Belen ridge in the Western Cordillera, was continuously or almost continuously active for - 18 m.y. (< 21 to > 2.7 Ma). Contractional activity ...
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(2007)We present high-resolution spectroscopic observations of GRB 060418, obtained with VLT/UVES. These observations were triggered using the VLT Rapid-Response Mode (RRM), which allows for automated observations of transient ...
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(Ediciones Doyma, S.L., 2019)
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(IOP, 2016)We present rapidly rising transients discovered by a high-cadence transient survey with the Subaru telescope and Hyper Suprime-Cam. We discovered five transients at z=0.384–0.821, showing a rate of rise faster than 1 ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2005-09)Gas dispersion is one of the key factors in the mineral flotation process. It can be expressed by many variables such as bubble size, gas holdup, gas superficial velocity and bubble surface area flux (S-b), In particular, ...
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(1998)The aim of this work is to derive rate of convergence estimates for the spectral approximation of a mathematical model which describes the vibrations of a solid-fluid type structure. First, we summarize the main ...
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(Institute of Mathematical Statistics, 2017)We investigate the problem of the rate of convergence to equilibrium for ergodic stochastic differential equations driven by fractional Brownian motion with Hurst parameterH >1/2 and multiplicative noise component σ. ...
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(Elsevier, 2017)tIn this paper we are interested in developing constitutive equations for fiber-reinforced nonlinearlyviscoelastic solids. It has been shown that constitutive equations for such bodies can be expressed in termsof a complete ...
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(Springer Verlag, 2019)© 2018, Springer-Verlag GmbH Germany, part of Springer Nature and Mathematical Optimization Society. We study the convergence of an inexact version of the classical Krasnosel’skii–Mann iteration for computing fixed points ...
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(KLUWER ACADEMIC/PLENUM PUBL, 2001-01)Let (Xt ) be a one dimensional diffusion corresponding to the operator L= 1 2 xx&: x , starting from x>0 and T0 be the hitting time of 0. Consider the family of positive solutions of the equation L =&* with * # (0, '), ...