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Microbial oxidation of refractory gold sulfide concentrate by a native consortium
(Elsevier Science, 2017-05)
A defined mesophilic consortium including an iron oxidizing bacterium and a sulfur oxidizing bacterium was constructed to evaluate its ability for bioleaching a flotation concentrate from Andacollo mine in Neuquén, Argentina. ...
Willow seedlings from photooxidized seeds accelerate cotyledon death and anticipate first leaf emergence: a histological and biochemical study following germination
(Wiley, 2013-04)
In willow seeds, photooxidative damage is mainly restricted to the outer cotyledonary tissues, significantly reducing normal germination. Here we analyzed the damage generated in cotyledonary tissues and investigated ...
Understanding the Role of Oxygen Vacancies in the Water Gas Shift Reaction on Ceria-Supported Platinum Catalysts
(ACS Publications, 2014-06)
Reducible oxides have been shown to greatly improve the activity of water gas shift (WGS) catalysts. The precise mechanism for this effect is a matter of intense debate, but the dissociation of water is generally considered ...
2D nucleation and growth phenomena in UPD of Cd on Ag(111) and Ag(100)
(The Electrochemical Society, 2010-03)
Underpotential deposition (UPD) of Cd on Ag single crystal substrates has been studied by in situ scanning tunneling microscopy (STM) and electrochemical measurements. On Ag(111) the UPD process starts with formation of ...
Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
(Elsevier Science Sa, 2014-02-14)
Partial hydrogenation of sunflower oil was studied over Pd/Al2O3/Al catalysts in a monolithic stirred reactor. The catalyst showed similar or even better activity and selectivity than conventional Pd/Al2O3 catalysts. ...
On the space-charge boundary layer inside the nozzle of a cutting torch
(American Institute of Physics, 2009-12)
A numerical study of the space-charge sheath adjacent to the nozzle wall of a cutting torch is presented. The hydrodynamic model corresponds to a collision-dominated sheath and does not assume cold ions, so drift-diffusion-type ...
New response in electrochemical impedance spectroscopy due to the presence of molybdenum on AB5-type alloys
(Pergamon-Elsevier Science Ltd, 2015-04)
During the present investigation, it was observed that the inclusion of molybdenum in LaNi3.6Co0.7Mn(0.4-x)Al0.3Mox AB5-type alloys produced new responses in the electrochemical impedance spectroscopy (EIS) when they are ...
An extended validation of the last generation of particle finite element method for free surface flows
(Elsevier, 2014-12)
In this paper, a new generation of the particle method known as Particle Finite Element Method (PFEM), which combines convective particle movement and a fixed mesh resolution, is applied to free surface flows. This interesting ...
Preparation and characterization of TiO2/HZSM-11 zeolite forphotodegradation of dichlorvos in aqueous solution
(Elsevier, 2013-04)
The TiO2/HZSM-11 materials were synthesized using titanium isopropoxide as a TiO2precursor andHZSM-11 a medium pore size zeolite with high thermal and chemical resistance as support. The amountof titanium isopropoxide was ...
Study of capillary network directionality and irrigation of hypoxic tissue in an angiogenesis lattice model
(Elsevier Science, 2013-08)
To shed light on the understanding of the angiogenesis process, we study a simplified lattice model for the capillary network formation between an existing blood vessel and an initially hypoxic tissue. We consider that the ...