Browsing by Subject "Materials porosos"
Now showing items 1-18 of 18
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Barrier effects of cellulosic fibers with hybrid coating based on zirconium metal-organic framework
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-07-29)
Article
Open AccessMetal-organic frameworks (MOFs) have great potential for the development of fire barriers for flammable materials. Accordingly, zirconium-based metal-organic framework (Zr-MOF), branched polyethyleneimine (BPEI), and ... -
"Breakthrough" osmosis and unusually high power densities in Pressure-Retarded Osmosis in non-ideally semi-permeable supported membranes
(Macmillan Publishers, 2017-03-23)
Article
Open AccessOsmosis is the movement of solvent across a membrane induced by a solute-concentration gradient. It is very important for cell biology. Recently, it has started finding technological applications in the emerging processes ... -
CuGaS2 and CuGaS2–ZnS porous layers from solution-processed nanocrystals
(2018-04-05)
Article
Open AccessThe manufacturing of semiconducting films using solution-based approaches is considered a low cost alternative to vacuum-based thin film deposition strategies. An additional advantage of solution processing methods is the ... -
Diseño de una herramienta porosa para el pulido de superficies ópticas usando programación lineal
(Universitat Politècnica de Catalunya, 2009)
Article
Open AccessEn este trabajo se diseña una nueva herramienta de pulido de superficies ópticas, que hemos llamado porosa, debido a que está formada por perforaciones y postes circulares. El diseño de esta nueva herramienta se basa en ... -
Electromagnetic shielding effectiveness of polycarbonate/graphene nanocomposite foams processed in 2-steps with supercritical carbon dioxide
(2015)
Article
Open AccessThe electromagnetic interference (EMI) shielding properties of polycarbonate/graphene composites foamed with supercritical carbon dioxide were investigated as a function of cellular morphology and graphene particle dispersion. ... -
Enhanced transmission band in periodic media with loss modulation
(2014-11-17)
Article
Open AccessWe study the propagation of waves in a periodic array of absorbing layers. We report an anomalous increase of wave transmission through the structure related to a decrease of the absorption around the Bragg frequencies. ... -
Estudio de las posibilidades de adecuar los procesos de absorción y evaporación del agua por los revestimientos de fachadas en los procesos de lluvia cara a la mejora del microclima urbano
(Universitat Politècnica de Catalunya, 2014-01)
Master thesis
Open AccessCon el incremento de zonas urbanas en el mundo, el fenómeno conocido como isla de calor se ha intensificado, haciéndose cada vez más frecuente y de mayor dimensión. Desde su descubrimiento en 1918, con el inicio de la ... -
F iltration des eaux de chantiers de ter rassement: étude in-vitro des mécanismes de filtration et validation in-situ
(Universitat Politècnica de Catalunya, 2013)
Master thesis (pre-Bologna period)
Restricted access - author's decisionSur les chantiers de terrassement, la mise à nu des sols (décapage de la couche végétale), entraîne lors des évènements pluvieux, une mise en suspension des particules. En absence de traitement, les eaux de ruissellement ... -
High-order HDG formulation with fully implicit temporal schemes for the simulation of two-phase flow through porous media
(John Wiley & Sons, 2021-07-30)
Article
Open AccessWe present a memory-efficient high-order hybridizable discontinuous Galerkin (HDG) formulation coupled with high-order fully implicit Runge-Kutta schemes for immiscible and incompressible two-phase flow through porous ... -
High-order hybridizable discontinuous Galerkin formulation for one-phase flow through porous media
(2021-03-06)
Article
Open AccessWe present a stable high-order hybridizable discontinuous Galerkin (HDG) formulation coupled with high-order diagonal implicit Runge–Kuta (DIRK) schemes to simulate slightly compressible one-phase flow through porous media. ... -
Modeling of reactive transport with particle tracking and kernel density estimators
(Universitat Politècnica de Catalunya, 2018-02-23)
Doctoral thesis
Open AccessRandom walk particle tracking methods are a computationally efficient family of methods to solve reactive transport problems. While the number of particles in most realistic applications is in the order of 10^6 - 10^9, the ... -
Nanoporous silicon-based surface patterns fabricated by UV laser interference techniques for biological applications
(2016-05-04)
Article
Open AccessThe fabrication of selectively functionalized micropatterns based on nanostructured porous silicon (nanoPS) by phase mask ultraviolet laser interference is presented here. This single-step process constitutes a flexible ... -
On the relationship between connectivity and reaction rates
(Universitat Politècnica de Catalunya, 2012-06)
Master thesis
Open AccessThe presence of connected hydrogeological structures associated with extreme values of permeability typically induces preferential channels that concentrate flow and produce extreme large/small values of travel times. ... -
PS-b-P4VP block copolymer micelles as a soft template to grow openly porous nickel films for alkaline hydrogen evolution
(2022-09-30)
Article
Open AccessHighly porous Ni films have been potentiostatically synthesised by micelle-assisted electrodeposition using custom-made PS-b-P4VP block copolymer micelles as a soft template. Two PS-b-P4VP block copolymers with PS/P4VP ... -
Recycled mortars with ceramic aggregates. Pore network transmutation and its relationship with physical and mechanical properties
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-02)
Article
Open AccessThe porosity of mortars with recycled ceramic aggregates (10, 20, 30, 50, and 100% as a replacement of natural aggregate) was evaluated and analyzed using three different techniques. The results of gas adsorption (N2), ... -
Simulation of mechanoregulation and tissue differentiation in calcium phosphate scaffolds for tissue engineering
(Universitat Politècnica de Catalunya, 2010-11-11)
Doctoral thesis
Open AccessLos estímulos mecánicos son uno de los factores que afectan a la diferenciación celular en el proceso de regeneración del tejido óseo, por lo tanto, en el desarrollo de andamios para ingeniería de tejidos, se pueden aplicar ... -
Temporal evolution of the domain structure in a Poisson-Voronoi transformation
(Institute of Physics, 2007-06-07)
Article
Open AccessThe temporal evolution of the domain size and free boundary distributions is calculated for a Poisson–Voronoi transformation. In this kind of transformation a set of randomly distributed domain seeds start growing sim ...
