Searched for: subject:"dispersion"
(1 - 20 of 139)

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Wandl, A. (author)
An increasing body of literature suggests that the conventional idea of a gradual transition in spatial structure from urban to rural does not reflect contemporary patterns of urban development and their potential for sustainable development. The research introduces the concept of territories-in-between (TiB) to address the issues surrounding...
doctoral thesis 2020
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Fu, J. (author), Brouwer, J.C. (author), Hendrikx, R.W.A. (author), Richardson, I.M. (author), Hermans, M.J.M. (author)
The present work deals with oxide dispersion strengthened (ODS) Eurofer steel fabricated by powder metallurgy involving mechanical alloying and spark plasma sintering. A heat treatment route including normalising and tempering was applied to the as-produced steel, based on differential scanning calorimetry (DSC) measurement. The...
journal article 2020
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Kuijpers, Ties (author)
Mineral oil spills at sea can have many negative consequences. For both preventive and responsive purposes, it is essential to accurately forecast oil spill evolution. Shear diffusion (in this context, i.e. the combined effect of vertical mixing and differentiated horizontal advection of mass) determines for a significant part the evolution of...
master thesis 2019
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Liu, Y. (author), van der Meer, F.P. (author), Sluijs, L.J. (author)
An asymptotic homogenization model considering wave dispersion in composites is investigated. In this approach, the effect of the microstructure through heterogeneity-induced wave dispersion is characterised by an acceleration gradient term scaled by a “dispersion tensor”. This dispersion tensor is computed within a statistically equivalent...
journal article 2019
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Zhang, Di (author), la Zara, D. (author), Quayle, Michael J. (author), Petersson, Gunilla (author), van Ommen, J.R. (author), Folestad, Staffan (author)
The morphology, size, and surface properties of pharmaceutical particles form an essential role in the therapeutic performance of active pharmaceutical ingredients (APIs) and excipients as constituents in various drug delivery systems and clinical applications. Recent advances in methods for surface modification, however, rely heavily on...
journal article 2019
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Kenjeres, S. (author), Zwinkels, S. (author)
In the present study, we focus on modeling and simulations of macroscopic behavior of a crowd of people under emergency conditions. We present a newly developed integrated numerical approach, which combines the time-dependent RANS method in predicting the temporal and spatial evolution of a heavy gas turbulent dispersion with the macroscopic...
journal article 2019
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Hrebtov, Michael (author), Hanjalic, K. (author)
Seasonal variation of air quality in a city with a large river was investigated by means of numerical simulations of air movement and pollutant dispersion over inversion-capped diurnal cycles using a Reynolds-averaged Navier-Stokes (RANS) approach with algebraic turbulent flux model. The study accounts for the effects of urban heat island ...
journal article 2019
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Shakeel, A. (author), Mahmood, Hamayoun (author), Farooq, Ujala (author), Ullah, Zahoor (author), Yasin, Saima (author), Iqbal, Tanveer (author), Chassagne, C. (author), Moniruzzaman, Muhammad (author)
Ionic liquids (ILs) are liquid salts at ambient or lower temperatures and consist of ions and short-lived ion pairs. They are potential alternatives to toxic, hazardous, highly flammable, and volatile solvents for preparing solutions, dispersions, gels, composites, and polymeric melts. ILs have some very interesting and unique characteristics...
review 2019
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Sun, X. (author), Wang, R. (author), Ould-Chikh, Samy (author), Osadchii, D. (author), Li, G. (author), Aguilar, Antonio (author), Hazemann, Jean louis (author), Kapteijn, F. (author), Gascon, Jorge (author)
Mesoporous nitrogen-doped carbon nanoparticles with atomically dispersed iron sites (named mesoNC-Fe) are synthesized via high-temperature pyrolysis of an Fe containing ZIF-8 MOF. Hydrolysis of tetramethyl orthosilicate (TMOS) in the MOF framework prior to pyrolysis plays an essential role in maintaining a high surface area during the...
journal article 2019
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Brown, Jenna A. (author), MacMahan, Jamie H. (author), Reniers, A.J.H.M. (author), Thornton, Ed B. (author), Shanks, Alan L. (author), Morgan, Steven G. (author), Gallagher, Edie L. (author)
Surfzone mixing and transport on a sandy, steep (∼1/8 slope), reflective beach at Carmel River State Beach, California, are described for a range of wave and alongshore flow conditions. Depth-limited wave breaking occurred close to the shore due to the steepness of the beach, creating a narrow surf/swash zone (∼10 m wide). Fluorescent...
journal article 2019
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Fu, J. (author), Brouwer, J.C. (author), Richardson, I.M. (author), Hermans, M.J.M. (author)
Oxide dispersion strengthened (ODS)Eurofer steel was prepared via mechanical alloying (MA)and spark plasma sintering (SPS). Different combinations of MA and SPS parameters were adopted in order to optimise the fabrication process. The experimental results show that the sample milled for 30 h, sintered at 1373 K at a pressure of 60 MPa has...
journal article 2019
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Poursaeidesfahani, A. (author), Andres Garcia, E. (author), de Lange, M.F. (author), Torres-Knoop, Ariana (author), Rigutto, Marcello (author), Nair, Nitish (author), Kapteijn, F. (author), Gascon, Jorge (author), Dubbeldam, D. (author), Vlugt, T.J.H. (author)
A mathematical model is used to predict adsorption isotherms from experimentally measured breakthrough curves. Using this approach, by performing only breakthrough experiments for a mixture of two (or more) components, one can obtain pure component adsorption isotherms up to the pressure of the experiment. As a case study, the adsorption of...
journal article 2019
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Meijers, P.C. (author), Tsouvalas, A. (author), Metrikine, A. (author)
The use of bolted connections between the tower and a support structure of an offshore wind turbine has created the need for a method to detect whether a monopile foundation plastically deforms during the installation procedure. Small permanent deformations are undesirable, not only because they can accelerate fatigue of the structure; but...
journal article 2018
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Geevers, S. (author), Mulder, W.A. (author), van der Vegt, J. J.W. (author)
We analyse the dispersion properties of two types of explicit finite element methods for modelling acoustic and elastic wave propagation on tetrahedral meshes, namely mass-lumped finite element methods and symmetric interior penalty discontinuous Galerkin methods, both combined with a suitable Lax–Wendroff time integration scheme. The...
journal article 2018
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Janssen, Janeau (author)
In-situ sample holders with double-tilting capabilities are used to insert and position samples inside a transmission electron microscope for dynamic imaging. However, the performance of these sample holders, regarding energy-dispersive X-ray spectroscopy (EDS) analysis, is not on par with their single-tilt counterparts. By analyzing the EDS...
master thesis 2018
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Santilli, Virginia (author)
In European suburban areas, shopping centres are the main attractor, socially and commercially. Overcoming the scale of small town centres and providing a common regional place, these world interiors of capital are building a new territorial identity.<br/>Nevertheless, today online shopping is denaturating shopping centres, turning them into...
master thesis 2018
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Koene, Michael (author)
Hydrothermal flames have become a very important field of study, especially for supercritical water oxidation. In supercritical water oxidation hazardous, toxic or non-biodegradable aqueous organic waste water streams can be efficiently destructed. Supercritical water oxidation takes place in a aqueous environment above the supercritical point....
bachelor thesis 2018
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Zimmerling, J.T. (author)
HoW do you look inside a box without opening it? How can we know whether or not a heart valve is functioning correctly without cutting a person open? Imaging – the art of seeing the unseeable. A CT-scan at the doctor’s office, crack detection in the wing of an airplane, and medical ultrasound are all examples of imaging techniques that allow us...
doctoral thesis 2018
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Wang, Rongxiao (author), Chen, B. (author), Qiu, S. (author), Zhu, Zhengqiu (author), Wang, Yiduo (author), Wang, Yiping (author), Qiu, Xiaogang (author)
Dispersion prediction plays a significant role in the management and emergency response to hazardous gas emissions and accidental leaks. Compared with conventional atmospheric dispersion models, machine leaning (ML) models have both high accuracy and efficiency in terms of prediction, especially in field cases. However, selection of model...
journal article 2018
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Dash, A. (author), Elsinga, G.E. (author)
While laboratory experiments, numerical simulations as well as field tests have underlined the influence of noise barriers in dispersing vehicular emissions and reducing downwind peak concentrations, these pollutants still remain in the atmosphere. Artificial pollutant sinks (for example, particle capturing or toxic gas treating devices)...
journal article 2018
Searched for: subject:"dispersion"
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