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Nanostructured catalysts applied to degrade atrazine in aqueous phase by heterogeneous photo-Fenton process
(Springer Heidelberg, 2019-02-02)
SBA-15 and KIT-6 materials have been synthesized and modified with iron salts by the wet impregnation method with different metal loadings. The different mesostructures obtained were characterized by N 2 adsorption–desorption ...
Grass-fed beef production systems of Argentina's flooding pampas: Understanding ecosystem heterogeneity to improve livestock production
(SAGE Publications, 2011-06)
The homogeneous topography of Argentina's flooding pampas conceals a substantial amount of spatial and temporal ecosystem heterogeneity. Differences in soils, grassland botanical composition and plant growth regimes that ...
Looking at the dynamical heterogeneity in a supercooled polymer system through isoconfigurational ensemble
(American Institute of Physics, 2018-09)
The dynamic correlations that emerge in a polymer system in supercooling conditions have been studied using molecular dynamic simulations. It is known that when a glass former approaches the glass transition temperature, ...
Spatial oxygen heterogeneity in a Hediste diversicolor irrigated burrow
(Springer, 2012-01)
The heterogeneity of oxygen distribution in a Hediste diversicolor burrow environment was investigated in a laboratory experiment using a 6-mm thick tank equipped with oxygen planar optodes. The two-dimensional oxygen ...
Microwave-assisted multicomponent synthesis of julolidines using silica-supported calix[4]arene as heterogeneous catalyst
(Pergamon-Elsevier Science Ltd, 2019-07-05)
The application of immobilizing calixarene onto the surface of silica using a sol-gel method, as an efficient heterogeneous catalyst (CX4SO3HSi(n)) for multicomponent Povarov reaction has been described. Catalytic activity ...
Determining the heterogeneity in time of the dynamics within a slowly relaxing region of a supercooled liquid: Role of sharp relaxation events
(American Physical Society, 2009-08-26)
Supercooled liquids have been shown to be dynamically heterogeneous with different regions of the system presenting dynamics that vary from each other even by orders of magnitude. Computer simulations have confirmed such ...
On the multiscale characterization of effective hydraulic conductivity in random heterogeneous media: A historical survey and some new perspectives
(Elsevier, 2020-06)
In large scale heterogeneous aquifer simulations, determining the appropriate coarsening scale λ to define an effective hydraulic conductivity Keff is a challenging task, that involves a trade-off between accuracy and cost. ...
Net growth rate of continuum heterogeneous biofilms with inhibition kinetics
(Nature Publishing Group, 2018-12)
Biofilm systems can be modeled using a variety of analytical and numerical approaches, usually by making simplifying assumptions regarding biofilm heterogeneity and activity as well as effective diffusivity. Inhibition ...
Heterogeneous Fenton reaction for the treatment of ACE in residual waters of pharmacological origin using Fe-SBA-15 nanocomposites
(Elsevier, 2018-11)
SBA-15 nanocomposites were synthesized using different sources of iron by direct hydrothermal synthesis. Various characterization techniques including X Ray Diffraction (XRD) at low and high angle, UV–vis diffuse reflectance ...
Bioeconomic modeling of optimal harvest time in Nile tilapia (Oreochromis niloticus) considering size heterogeneity and minimum marketable size
(Pontificia Universidad Católica de Valparaíso, 2020)