4,814 research outputs found
Co-evolutionary computation for constrained min-max prolems and its application for pursuit-evasion games
No full textMechanica op de microcomputer
No full textAfscheidscollege van prof.dr.ir. J.G. Lekkerkerker (informele notities)
Propylene/propane separation on a ferroaluminosilicate levyne zeolite
No full textThe propylene/propane separation properties of levyne zeolites with different framework Si/Al and Fe/Al ratios have been examined and compared with those of the four well-studied zeolite adsorbents (i.e., Na-A, Ca-A, Na-X and ITQ-12) for this separation. Both zeolite framework structure and composition were found to be critical for the propylene uptake, kinetic separation and adsorbent durability. Among the zeolites studied here, the mixed CaNH4 form of a ferroaluminosilcate levyne (Si/Al = 15.5 and Fe/Al= 0.27) showed the highest propylene/propane selectivity (11). Under vacuum-swing adsorption mode at 298 K and reservoir pressure of 1.2 bar, this partially iron-substituted zeolite was characterized by a higher propylene uptake (ca. 1.0 vs 0.7 mmol g(-1)) than its aluminosilicate version, which can be attributed to a combination of the molecular sieve effect of its framework topology and relatively weaker acidity. The results of this study demonstrate that, in contrast to widely held belief, zeolite adsorbents selective for propylene/propane separation do not need to be a pure-silica composition.11Nsciescopu
Installatierede van de Technische Commissie voor de Waterkeringen
No full textRede uitgesproken bij de installatie van de Technische Adviescommissie voor de Waterkeringen door de Minister van Verkeer en Waterstaat, J.G. Suurhoff, en het antwoord van de voorzitter van de TAW op deze rede, prof.ir. P.P. Jansen. De commissie werd ingesteld naar aanleiding van de overstromingen in Tuindorp-Oostzaan in 1960. De commissie is officieel ingesteld op 31 mei 1965, maar de installatierede is in Augustus van dat jaar uitgesprokenTAW/EN
Implicit large-eddy simulation of the stratocumulus-topped boundary layer: A grid sensitivity study
No full textA range of implicit large-eddy simulations of the stratocumulus-topped boundary layer is performed to study the influence of grid resolution on selected parameters including liquid water path and second and third moments of vertical velocity fluctuations. The simulations are based on two sets of aircraft measurements, which are also used to evaluate the results of the simulations. The specific case presented here indicates that simulations with a grid aspect ratio accounting for the anisotropic nature of the turbulence near the surface and at the top of the boundary layer lead to better agreement with measurements than simulations with an isotropic grid
Experimental application of a dynamic observer to capture and predict the dynamics of a flat-plate boundary layer
No full textThe recent approach, proposed by Guzman-Inigo et al. \cite{GuzmanInigo2014}, using System Identification to derive a Reduced Order Model from snapshots of a flow is applied to a transitional boundary layer growing over a flat-plate. It is shown that such an approach can indeed be applied to experimental PIV snapshots. Using a proper learning dataset and a proper local sensor, it is shown that the evolution of boundary layer can be properly estimated from the time evolution of the local probe and with no more than ten POD modes for the Reduced Order Model. The influence of the various parameters on the efficiency of the system identification technique is discussed
Entering GATTACA: Yeast genomes: Analysis, insights and applications
No full textAccepted Author ManuscriptBT/Industriele Microbiologi
- …
