PDI - Resultado de Búsqueda

Tomás Vargas

Profesor Asociado

UNIVERSIDAD DE CHILE (UCH), FACULTAD CS.FISICAS Y MATEMATICAS , DPTO INGENIERIA QUIMICA

Santiago, Chile

Surface Science; Thin Films; Nanomaterials; surface science; nanoscience; ultra high vacuum techniques; LIXIVIACION QUÃƒÂMICA Y BACTERIANA DE MINERALES,; ELECTROOBTENCION Y ELECTROREFINO DE COBRE; CORROSION DE METALES; Processing, characterization and properties of complex ceramics and metallic alloys; Electron microscopy and microanalysis of engineering materials and nanoparticles; Defects, diffusion and phase transformation in solids

Electrometallurgy, UNIVERSITY OF LONDON. Chile, 1984

Profesor asociado 44 horas semanales

Universidad de Chile, Facultad Cs.Fisicas y matematicas, Dpto Ingenieria Quimica

Santiago, Chile

Sin Información - Sin Información
Profesor Asociado Full Time

Facultad de Ciencias Físicas y Matemáticas

Santiago, Chile

1989 - A la fecha


Copper Electrodeposition Kinetics Measured by Alternating Current Voltammetry and the Role of Ferrous Species Wagner, ME; Valenzuela R.; Vargas, T.; Colet-Lagrille, M; Allanore, A Article ISI SCOPUS JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2016)
Copper Electrodeposition Kinetics Measured by Alternating Current Voltammetry and the Role of Ferrous Species Wagner, Mary-Elizabeth; Valenzuela, Rodrigo; Vargas, Tomas; Colet-Lagrille, Melanie; Allanore, Antoine Article JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2016)
In situ mining through leaching=> experimental methodology for evaluating its implementation and economic considerations Bahamondez, Carolina; Castro, Raúl; Vargas, Tomás; Arancibia, Ernesto Article the Journal of the Southafrican Institute of Mining and Metallurgy (2016)
Potentiodynamic Behavior of Carbon Steel in Borate Buffer Solutions under Different Hydrodynamic Conditions Caceres, Luis; Soliz, Alvaro; Vargas, Tomas Article JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2016)
Potentiodynamic Behavior of Carbon Steel in Borate Buffer Solutions under Different Hydrodynamic Conditions Cáceres L.; Soliz, A.; Vargas, T. Article ISI JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2016)
Methyl-beta-Cyclodextrin Improves Sperm Capacitation Status Assessed by Flow Cytometry Analysis and Zona Pellucida-Binding Ability of Frozen/Thawed Bovine Spermatozoa Aguila, L; Arias, ME; Vargas, T.; Zambrano F.; Felmer R. Article ISI SCOPUS Reproduction in Domestic Animals (2015)
Synthesis of nanostructured zirconia by anodization at low potentials Hidalgo J.; Colet-Lagrille, M; Mukasyan, A; Fuenzalida, VM; Vargas, T. Article ISI SCOPUS Crystal Research and Technology (2015)
Synthesis of nanostructured zirconia by anodization at low potentials Hidalgo, Jacqueline; Colet-Lagrille, Melanie; Mukasyan, Alexander; Fuenzalida, Victor; Vargas, Tomas Article CRYSTAL RESEARCH AND TECHNOLOGY (2015)
Biological and chemical control in copper bioleaching processes: When inoculation would be of any benefit? Vargas, T.; Davis-Belmar C.S.; Carcamo, C Article ISI SCOPUS HYDROMETALLURGY (2014)
Biological and chemical control in copper bioleaching processes: When inoculation would be of any benefit? T. Vargas, C. Davis-Belmar, C. Cárcamo Article Hydrometallurgy (2014)
Anaerobic growth of Acidithiobacillus ferrooxidans on pyrite Blanca Escobar, Tomas Vargas Article Adv. Mat. Res. (2013)
Attachment of Acidithiobacillus ferrooxidans onto different solid substrates and fitting through Langmuir and Freundlich equations L. Xia, Z. Shen, T. Vargas, W.J. Sun, R.M. Ruan, Z.D. Xia, Z.D. Qiu Article Biotechnol. Letters (2013)
Attachment of Acidithiobacillus ferrooxidans onto different solid substrates and fitting through Langmuir and Freundlich equations Xia, LX; Shen Z.; Vargas, T.; Sun, WJ; Ruan, RM; Xie, ZD; Qiu, GZ Article ISI SCOPUS Biotechnology Letters (2013)
Bioleaching of sulphide minerals with Sulfobacillus acidophilus at 45°C B. Escobar, D. Bravo, I. Jaque, A.Collari, T. Vargas Article Adv. Mat. Res. (2013)
Biological, chemical and transport phenomena which control the rate of copper leaching in heap and dump operations T. Vargas, C. Davis-Belmar Article Adv. Mat. Res. (2013)
Stability of reference genes for normalization of reverse transcription quantitative real-time PCR (RT-qPCR) data in bovine blastocysts produced by IVF, ICSI and SCNT Luchsinger, C; Arias, M.E.; Vargas, T.; Paredes M.; Sanchez R.; Felmer R. Article SCOPUS ZYGOTE (2013)
A novel mathematical model for the study of the electrochemical nucleation of metals on foreign substrates from the analysis of potentiostatic current transients T. Vargas, M. Colet, J.C. Salgado Article ECS Transactions (2010)
Modeling the kinetics of anodic dissolution of chalcopyrite based on electrochemical measurements conducted on chalcopyrite particle electrodes H. Jordan, T. Vargas Article ECS Transactions (2010)
Effect of flotation and solvent extraction reagents on the bioleaching of a copper concentrate with Sulfolobus metallicus B. Escobar, L. Quiroz, T. Vargas Article Adv. Mat. Research (2009)
Effect of solution impurities on morphology and composition of copper electrodeposits obtained in membrane based cell Cifuentes L.; Grágeda M.; Casas, JM; Vargas, T. Article ISI SCOPUS MATERIALS SCIENCE AND TECHNOLOGY (2009)
Influence of pitting and iron oxide formation during corrosion of carbon steel in unbuffered NaCl solutions Cáceres L.; Vargas, T.; Herrera L. Article ISI SCOPUS CORROSION SCIENCE (2009)
Influence of pitting and iron oxide formation during corrosion of carbon steel in unbuffered NaCl solutions L. Cáceres, T. Vargas, L. Herrera Article Corrosion Science (2009)
Reductive action of activated carbon on ferric iron interferes on the determination of the oxidative activity of Acidithiobacillus ferrooxidans on ferrous iron T. Vargas, P. Díaz, B. Escobar Article Adv. Mat. Research (2009)
Rietveld refinement of X-ray diffractograms evidences surface texturization in chemical and biological leaching of chalcopyrite at 70 degrees C Oyarzún P.; Gautier, V; Reich, M; Vargas, T. Article BIOHYDROMETALLURY: FROM THE SINGLE CELL TO THE ENVIRONMENT (2009)
Rietveld refinement of X-ray diffractograms evidences surface texturization in chemical and biological leaching of chalcopyrite at 70ºC P. Oyarzún, V. Gautier, M. Reich, T. Vargas Article Adv. Mat. Research (2009)
Study of the variational patterns for corrosion kinetics of carbon steel as a function of dissolved oxygen and NaCl concentration L. Cáceres, T. Vargas and M. Parra Article Electrochimica Acta (2009)
Study of the variational patterns for corrosion kinetics of carbon steel as a function of dissolved oxygen and NaCl concentration Cáceres L.; Vargas, T.; Parra,M Article ISI SCOPUS ELECTROCHIMICA ACTA (2009)
The effect of solution impurities on the morphology and composition of copper electrodeposits obtained in a membrane-based cell Cifuentes L., Grageda M., Casas J.M., Vargas T. Article Materials Science and Technology (2009)
Cooperative action of attached and planktonic cells during bioleaching of chalcopyrite with Sulfolobus metallicus at 70 degrees C Gautier, V; Escobar B.; Vargas, T. Article ISI SCOPUS HYDROMETALLURGY (2008)
Cooperative action of attached and planktonic cells during bioleaching of chalcopyrite with Sulfolobus metallicus at 70 °C Gautier, V; Escobar B.; Vargas, T. Article HYDROMETALLURGY (2008)
Cooperative action of attached and planktonik cells during bioleaching of chalcopyrite with Sulfolobus metallicus at 70 ºC Gautier V., Escobar B., Vargas T. Article Hydrometallurgy (2008)
Formation of hydrocarbon gaseous compounds during bioleaching of copper sulfide minerals with mesophilic microorganisms Luca R., Townley B., Escobar B., Vargas T. Article Hydrometallurgy (2008)
Formation of hydrocarbon gaseous compounds during bioleaching of copper sulphide minerals with mesophilic microorganisms Luca R.; Townley B.; Escobar B.; Vargas, T. Article ISI SCOPUS HYDROMETALLURGY (2008)
Corrosion kinetics studies of AISI 1020 carbon steel from disolved oxygen consumption measurements in aqueous sodium chloride solutions Cáceres L., Herrera L., Vargas T Article Corrosion (2007)
Corrosion kinetics studies of AISI 1020 carbon steel from dissolved oxygen consumption measurements in aqueous sodium chloride solutions Cáceres L.; Herrera L.; Vargas, T. Article ISI SCOPUS CORROSION (2007)
Determination of electrochemical parameters and corrosion rate for carbon steel in un-buffered sodium chloride solutions using a superimposition model Cáceres L., Vargas T., Herrera L. Article Corrosion Science (2007)
Determination of electrochemical parameters and corrosion rate for carbon steel in un-buffered sodium chloride solutions using a superposition model Cáceres L.; Vargas, T.; Herrera L. Article ISI SCOPUS CORROSION SCIENCE (2007)
Monitoring of hydrocarbon gaseous compounds formed during bioleaching of copper sulphide minerals with mesophilic microorganisms Luca R., Vargas T., Escobar B., Townley B. Article Adv. Mat. Research (2007)
Solubility of sodium-jarosite and solution speciation in the system Fe(III)-Na-H2SO4-H2O at 70 degrees C Casas, JM; Paipa, C.; Godoy, I.; Vargas, T. Article ISI SCOPUS JOURNAL OF GEOCHEMICAL EXPLORATION (2007)
Solubility of sodium-jarosite and solution speciation in the system Fe(III)-Na-H2SO4-H2O at 70ºC Casas J.M., Paipa C., Godoy I., Vargas T. Article J. Geochem. Expl. (2007)
The catalytic influence of Sulfolobus metallicus in the bioleaching of chalcopyrite: role of attached and planktonic cells Gautier V., Escobar B., Vargas T. Article Adv. Mat. Research (2007)
Electrochemical study of the catalytic influence of Sulfolobus metallicus in the bioleaching of chalcopyrite at 70 degrees C Jordan, H; Sanhueza, A; Gautier, V; Escobar B.; Vargas, T. Article ISI SCOPUS HYDROMETALLURGY (2006)
Electrochemical study of the catalytic influence of Sulfolobus metallicus in the bioleaching of chalcopyrite at 70ºC Jordan H., Sanhueza A., Gautier V., Escobar B., Vargas T. Article Hydrometallurgy (2006)
Comparative study of alternative methods for the determination of Fe+3 and Fe+2 in leaching solutions and in acid mine drainages Paipa C., Mateo M., Godoy I., Poblete E., Toral M.I. Article Minerals Processing (2005)
Comparative study of alternative methods for the simultaneous determination of Fe+3 and Fe+2 in leaching solutions and in acid mine drainages Paipa, C.; Mateo, M; Godoy, I.; Poblete E.; Toral, MI; Vargas, T. Article ISI SCOPUS MINERALS ENGINEERING (2005)
Bacterial oxidation of ferrous iron by Acidithiobacillus ferrooxidans in the pH range 2.5 – 7.0 Meruane G., Vargas T. Article Hydrometallurgy (2003)
Bacterial oxidation of ferrous iron by Acidithiobacillus ferrooxidans in the pH range 2.5-7.0 Meruane G.; Vargas, T. Article ISI HYDROMETALLURGY (2003)
Novel electrochemical – enzymatic model which quantifies the effect of the solution Eh on the kinetics of ferrous iron oxidation with Acidithiobacillus ferrooxidans Meruane G., Salhe C., Wiertz J., Vargas T. Article Biotechnology and Bioengineering (2002)
Novel electrochemical-enzymatic model which quantifies the effect of the solution Eh on the kinetics of ferrous iron oxidation with Acidithiobacillus ferrooxidans Meruane G.; Salhe, C; Wiertz, J; Vargas, T. Article ISI SCOPUS BIOTECHNOLOGY AND BIOENGINEERING (2002)
Chemical and electrochemical basis of bioleaching processes Hansford G.S., Vargas T. Article Hydrometallurgy (2001)
Chemical and electrochemical basis of bioleaching processes Hansford, GS; Vargas, T. Article ISI SCOPUS HYDROMETALLURGY (2001)
Nucleation and inhibition control during the hydrothermal-electrochemical growth of barium titanate films Escobar I., Silva C., Vargas T., Fuenzalida V.M. Article J. Am. Cer. Soc. (2000)
Nucleation and inhibition control during the hydrothermal-electrochemical growth of barium titanate films Escobar, IS; Silva, CI; Vargas, T.; Fuenzalida, VM Article ISI SCOPUS JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2000)
Attachment of Thiobacillus ferrooxidans on synthetic pyrite of varying structural and electronic properties Sanhueza A., Ferrer I.J., Vargas T., Amils R., Sanchez C. Article Hydrometallurgy (1999)
Bioleaching model of copper sulfide ore bed in heap and dump configurations Casas J.M., Martínez J., Moreno L., Vargas T. Article Metallurgical and Materials Transactions B (1998)
Bioleaching of refractory gold concentrates at high pulp densities in a non-conventional rotating drum reactor Herrera M.N., Escobar B., Parra N., González C., Vargas T. Article Minerals and Metallurgical Processing (1998)
Electrochemical studies on the hydrothermal electrochemical formation of BaTiO3 films Vargas T., Díaz H., Silva C., Fuenzalida V.M. Article J. Am. Cer. Soc. (1997)
A method for the determination of the number of Thiobacillus ferrooxidans attached to sulfide minerals Escobar B., Jedlicki E., Wiertz J. and Vargas T. Article Hydrometallurgy (1996)
Interfacial phenomena affecting the adhesion of Thiobacillus ferrooxidans to sulphide mineral surfaces Solari J., Huerta G., Escobar B., Vargas T., Badilla-Ohlbaum R. and Rubio J. Article Colloid and Surfaces (1992)
A model for the bacterial leaching of copper sulfide ores in pilot scale columns Neuburg H., Castillo J., Herrera M.N., Vargas T., Wiertz J., Badilla-Ohlbaum R. Article Int. J. Min. Processing (1991)
Biotechnology and mineral processing: fundamentals of bacterial leaching processes Badilla-Ohlbaum R., Herrera M.N., Vargas T. Article Arch. Biol. Med. Exp. (1990)
Controlled nucleation and growth in chromium electroplating from molten LiCl KCl Vargas T., Inman D. Article J. Appl. Electrochem. (1987)
Anodic dissolution of Chalcopyrite in water acetonitrile solutions Vargas T., Inman D. Article J. Electroanal. Chem. (1981)
Fixed bed vs rotary kiln in sponge iron production with local technology Vargas T., Valladares J., Krasuk J.H. Article Lat. Am. J. Chem. Eng. & Appl. Chem. (1975)
Physical and chemical transformations of gangue materials during leaching of copper ore particles and their influence on copper leaching kinetics. Vargas,Tomás; Rojas, Francisco; Bahamondez, Carolina; Castro, Raúl; Ihle, Christian; Caraballo, Manuel; Widzyk-Capehart, Eleonore Article The Journal of the South African Institute of Mining and Engineering (0)


Present and long term effect of environmental lead exposure over intellectual impairment in children Iglesias V.; Pino, P; Vargas, T.; Steenland K. Abstract ISI EPIDEMIOLOGY (2007)


ANAEROBIC GROWTH OF ACIDITHIOBACILLUS FERROOXIDANS ON PYRITE Escobar B.; Vargas, T. ConferencePaper ISI SCOPUS ADVANCED MATERIALS RESEARCH (2013)
BIOLEACHING OF SULPHIDE MINERALS WITH SULFOBACILLUS ACIDOPHILUS AT 45 degrees C Escobar B.; Bravo D.; Jaque, I; Collari, A; Vargas, T. ConferencePaper ISI SCOPUS ADVANCED MATERIALS RESEARCH (2013)
Biological, chemical and transport phenomena which control the rate of copper leaching in heap and dump operations Vargas, T.; Davis-Belmar, C ConferencePaper ISI SCOPUS ADVANCED MATERIALS RESEARCH (2013)
A Novel Mathematical Model for the Study of Electrochemical Nucleation of Metals on Foreign Substrates from the Analysis of Potentiostatic Current Transients Vargas, T.; Colet, M; Salgado JC ConferencePaper ISI SCOPUS ECS Transactions (2010)
Modeling the Kinetics of Anodic Dissolution of Chalcopyrite Based on Electrochemical Measurements Conducted on Chalcopyrite Particle Electrodes Jordan, H; Vargas, T. ConferencePaper ISI SCOPUS ECS Transactions (2010)
EFFECT OF FLOTATION AND SOLVENT EXTRACTION REAGENTS ON THE BIOLEACHING OF A COPPER CONCENTRATE WITH SULFOLOBUS METALLICUS Escobar B.; Quiroz L.; Vargas, T. ConferencePaper BIOHYDROMETALLURY: FROM THE SINGLE CELL TO THE ENVIRONMENT (2009)
Reductive action of activated carbon on ferric iron interferes on the determination of the oxidative activity of Acidithiobacillus ferrooxidans on ferrous iron Vargas, T.; Díaz P; Escobar B. ConferencePaper BIOHYDROMETALLURY: FROM THE SINGLE CELL TO THE ENVIRONMENT (2009)
Rietveld refinement of X-ray diffractograms evidences surface texturization in chemical and biological leaching of chalcopyrite at 70°C Oyarzún P.; Gautier, V; Vargas, T.; Reich, M ConferencePaper ADVANCED MATERIALS RESEARCH (2009)
Monitoring of hydrocarbon gaseous compounds formed during bioleaching of copper sulphide minerals with mesophilic microorganisms Luca R.; Vargas, T.; Escobar B.; Townley B. ConferencePaper ISI BIOHYDROMETALLURY: FROM THE SINGLE CELL TO THE ENVIRONMENT (2007)
The catalytic influence of Sulfolobus metallicus in the bioleaching of chalcopyrite: Role of attached and planktonic population Gautier, V; Escobar B.; Vargas, T. ConferencePaper ISI BIOHYDROMETALLURY: FROM THE SINGLE CELL TO THE ENVIRONMENT (2007)