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One-step synthesis of bmin+HSO4 - ionic liquid for applications in hydrometallurgy

Cortes E.; Dondero A.; Aros H.; Carlesi C. (2014-04-04)

The ionic liquid (LI) 1-butyl-3-methylimidazolium hydrogen sulphate (bmin + HSO4 -) was synthesized in a stirred batch reactor at 70°C. The products were characterized by means of UV spectrometry, that allowed quantify the ...

One more neighbor: The first brown dwarf in the VVV survey

Beamin J.C.; Minniti D.; Gromadzki M.; Kurtev R.; Ivanov V.D.; Beletsky Y.; Lucas P.; Saito R.K.; Borissova J. (2014-04-04)

Context. The discovery of brown dwarfs (BDs) in the solar neighborhood and young star clusters has helped to constraint the lowmass end of the stellar mass function and the initial mass function. We use data of the Vista ...

Ontology model of a robotics agents community

Latorre H.; Harispe K.; Salinas R.; Lefranc G. (2014-04-04)

This paper presents an Ontology Model of necessities and decisions for a cooperative community of heterogeneous robotic agents. Based on an ant community, it defines the characteristics of a collaborative and cooperative ...

OoaspectZ and aspect-oriented UML class diagrams for Aspect-oriented software modelling (AOSM)

Vidal Silva C.; Saens R.; Del Rio C.; Villarroel R. (2014-04-04)

Regarding modularised software development, Aspect-oriented programming (AOP) identifies and represents individually crosscutting concerns during the software development cycle's programming stage. This article proposes ...

Open inflationary universe with tachyonic matter

Labraa P.; Balart L.; Del Campo S.; Herrera R.; Saavedra J. (2014-04-04)

We study a one-field open inflationary model in a universe dominated by tachyon matter [1, 2]. We work in the scenario of the one-bubble universe where bubble formation is described by the Coleman-De Lucia (CDL) instanton ...

Open inflationary universes in Gauss-Bonnet brane cosmology

Del Campo S.; Herrera R.; Saavedra J. (2014-04-04)

In this paper, we study a type of one-field approach for open inflationary universe scenario in the context of braneworld models with a Gauss-Bonnet correction term. For a one-bubble universe model, we determine and ...

Operación Invernal en Ruta 60 CH

Ogueda, Leonardo (Pontificia Universidad Católica de Valparaíso. Programa Cybertesis, 2013-10-23)

Operational efficiency of the longline hauler on a prototype artisanal tuna fishing vessel from Margarita Island, Venezuela

Trujillo E.; Martinez G. (2014-04-04)

The operational efficiency of the longline hauler on an artisanal tuna fishing vessel from Margarita Island, Venezuela, was determined using the average setting velocity, average hauling velocity, hauler input tension (T ...

Optical properties of CdSe and CdO thin films electrochemically prepared

Henriquez R.; Grez P.; Munoz E.; Gomez H.; Badan J.A.; Marotti R.E.; Dalchiele E.A. (2014-04-04)

The present work comparatively studies the optical properties of CdO against CdSe samples potentiostatically electrodeposited onto fluorine-doped tin oxide/glasses (FTO). The films were prepared by electrochemical reduction ...

Optical studies of single-tryptophan B. licheniformis β-lactamase variants

Risso V.A.; Primo M.E.; Brunet J.E.; Sotomayor C.P.; Ermacora M.R. (2014-04-04)

β-lactamases (penicillinases) are important complicating factors in bacterial infections and excellent theoretical and experimental models in protein structure, dynamics and evolution. Bacillus licheniformis exo-small ...

Optimal harvesting in a predator-prey model with Allee effect and sigmoid functional response

Rojas-Palma A.; Gonzalez-Olivares E. (2014-04-04)

This work deals with the determination of the optimal harvest policy in an open access fishery in which both prey and predator species are subjected to non-selective harvesting. The model is described by autonomous ordinary ...

Optimal stochastic fault tracking for rural electrical distribution networks via emergency brigades

Tardon C.; Lopez E.; Tardon J.; Lopez M.; Poloujadoff M.; Lefranc G. (2014-04-04)

This article presents the results obtained when applying a new strategy for finding faults in rural distribution systems. This paper proposes a working protocol for the minimization of the average restoration time via the ...

Optimisation of synthesis of oligosaccharides derived from lactulose (fructosyl-galacto-oligosaccharides) with β-galactosidases of different origin

Guerrero C.; Vera C.; Illanes A. (2014-04-04)

Batch synthesis of fructosyl-galacto-oligosaccharides from lactulose was performed with commercial β-galactosidase preparations from Aspergillus oryzae, Kluyveromyces lactis and Bacillus circulans. The enzyme from A. oryzae ...

Optimización de enrutamiento en redes IP usando algoritmo ANTNET calibrado por un algoritmo genético

Luis Armando González Cos (Pontificia Universidad Católica de Valparaíso, Facultad de Ingeniería, Escuela de Ingeniería Informática, 2014-08-22)

Optimización del proceso de extracción de sólidos de Té soluble a partir de Té Off-grade

Eduardo Antonio Llanos Lira (Pontificia Universidad Católica de Valparaíso, Facultad de Ingeniería, Escuela de Ingeniería Química, 2014-08-22)

Optimización en la recuperación metalúrgica de Molibdeno, Planta I Las Tórtolas, División Los Bronces-Angloamerican

Xenia Xiomara Méndez Méndez (Pontificia Universidad Católica de Valparaíso, Facultad de Ingeniería, Escuela de Ingeniería Química, 2014-08-22)

Optimización en los tiempos y velocidad de moldeo en la unidad de refinación y moldeo en CODELCO, División Chuquicamata

Aldo Andrés Aguilera Acevedo (Pontificia Universidad Católica de Valparaíso, Facultad de Ingeniería, Escuela de Ingeniería Química, 2014-08-22)

Optimización georreferenciada de rutas de lectura de medidores

Jaime Fernando Acevedo Salinas (Pontificia Universidad Católica de Valparaíso, Facultad de Ingeniería, Escuela de Ingeniería Informática, 2014-08-22)

Optimización hidrometalúrgica a través de sistemas de celdas EMEW

Sebastián Javier Badilla Contreras (Pontificia Universidad Católica de Valparaíso, Facultad de Ingeniería, Escuela de Ingeniería Química, 2014-08-22)

Optimizador de parámetros basado en QPSO para autonomous search

Diego Andrés Moraga Lippians; Roberto Ignacio Morales Aguirre (Pontificia Universidad Católica de Valparaíso, Facultad de Ingeniería, Escuela de Ingeniería Informática, 2014-08-22)

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