Facultad de Ciencias Físicas y Matemáticas: Recent submissions
Now showing items 6701-6720 of 21971
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(Universidad de Chile, 2019)Actualmente, se tienen desempeños dispares de los indicadores clave de rendimiento (KPI) de los operadores de la Superintendencia de Carguío y Transporte de Minera Centinela. Se necesita saber quiénes son los operadores ...
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(Elsevier, 2020)Copper nanoparticles were synthesized via precipitation technique using the pseudonatural cationic chitosan biopolymer as a stabilizing agent. The nanoparticles developed were successfully incorporated into the 1:1 ratio ...
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(Cambridge University Press, 2020)Abelian cellular automata (CAs) are CAs which are group endomorphisms of the full group shift when endowing the alphabet with an abelian group structure. A CA randomizes an initial probability measure if its iterated images ...
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(Springer, 2020)Objective This study aims to investigate the attachment of Acidithiobacillus ferrooxidans to pyrite in two different environments: fresh and saline water (water with 35 g/L of NaCl or 0.6 M). Adsorption isotherms were ...
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(EDP Sciences, 2020)We present Atacama Large Millimeter Array (ALMA) Band 6 observations at 14-20 au spatial resolution of the disk and CO(2-1) outflow around the Class I protostar DG Tau B in Taurus. The disk is very large, both in dust ...
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(Elsevier, 2020)This paper discusses component age-related degradation and failure initiated from a shared cause and coupling factor (or mechanism) and the likelihood of the resulting common cause failure (CCF). For these components a CCF ...
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(Universidad de Chile, 2019)El presente trabajo busca determinar los aspectos más relevantes a incorporar en una guía de mejores prácticas de estimación de recursos para yacimientos tipo pórfido cuprífero. Para su realización, se desarrollan dos ...
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(Universidad de Chile, 2019)El uso de agua de mar en la miner a presenta desaf os por la alta concentraci on de iones corrosivos de esta, los cuales afectan la recuperaci on de minerales sulfurados de cobre. Esto, en parte, ha sido resuelto ...
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(Universidad de Chile, 2019)La industria de la construcción está apostando por utilizar soluciones constructivas que minoren los tiempos de construcción, pero sin descuidar la calidad de los materiales y estructuras, es por esto, que los elementos ...
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(EDP Sciences, 2020)Context. Near-IR polarimetric images of protoplanetary disks enable us to characterize substructures that might be due to the interaction with (forming) planets. The available census is strongly biased toward massive disks ...
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(American Chemical Society, 2020)
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(IEEE-Institute of Electrical and Electronics Engineers, 2020)The explosive growth of wireless devices motivates the development of the internet-of-things (IoT), which is capable of interconnecting massive and diverse "things" via wireless communications. This is also called massive ...
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(Amer Assoc Advancement Science, 2020)Our nearest neighbor, Proxima Centauri, hosts a temperate terrestrial planet. We detected in radial velocities evidence of a possible second planet with minimum mass mc sin ic = 5.8 ± 1.9M⊕ and orbital period P c = 5.21 ...
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(Elsevier, 2020)Three-dimensional (3D) bismuth selenide (Bi2Se3) nanostructures were synthesized by microwave synthesis using water as a solvent and hydrazine hydrate as a reducing agent and exfoliated into few layers of Bi2Se3. Bi2Se3- ...
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(Springer, 2020)The aim of this article is estimating the number of simultaneous speakers from the overlapped speech signals. The percentage of correct number of speakers is an important factor for the proposed algorithm. The proposed ...
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(Elsevier, 2020)In this study, an expert system is presented for analyzing the mental workload of interacting with a mobile phone while facing common daily tasks. Psychophysiological signals were collected from various devices, each ...
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(Elsevier, 2020)The dolomite coastal aquifer of Balanegra (SE Spain) is the only source of irrigation water in an area of flourishing intensive agriculture. This scenario has consequently led to a severe exploitation of the water resources. ...
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(Universidad de Chile, 2020)Se desarrolla el trabajo de título bajo la tutela de Paulina Temer en la empresa CIPRES, grupo de ingeniería que ofrece consultoría en transporte. Dentro de los productos que ofrece la empresa está el estudio de flujo ...
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Analyzing the potential for solar thermal energy utilization in the Chilean copper mining industry (Elsevier, 2020)Copper mining is the largest industry and energy consumer in Chile, utilizing heat from imported fossil fuels of which Chile is not a producer. The goals for decarbonization present opportunities to analyze how the Chilean ...
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(Elsevier, 2020)Endogeneity arises in discrete choice models due to several factors and results in inconsistent estimates of the model parameters. In adaptive choice contexts such as choice-based recommender systems and adaptive stated ...
