Searched for: subject:"diffusion"
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Adatrao, S. (author), Sciacchitano, A. (author)
A novel approach is introduced that allows the elimination of undesired laser light reflections from particle image velocimetry (PIV) images. The approach relies upon anisotropic diffusion of the light intensity, which is used to generate a background image to be subtracted from the original image. The intensity is diffused only along the...
journal article 2019
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Filatova, O.G. (author)
Human brain consists of grey and white matter. Grey matter largely forms the<br/>outer layer of the brain, and is responsible for decision making and functioning<br/>of the human body. Complementary, the white matter (WM) contains the<br/>communication pathways between the grey matter areas. Diffusion-weighted<br/>magnetic resonance imaging ...
doctoral thesis 2019
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Shi, W. (author)
High efficiency, low cost, and long stability are three key factors for the wide application of photovoltaics (PV) which are currently intensively studied in order to meet the increasing global renewable energy demand. Currently, the PV market is mainly based on silicon. However, solar cells based on silicon may not be capable to meet the long...
doctoral thesis 2019
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Suresh Kumar, P. (author), Korving, Leon (author), Keesman, Karel J. (author), van Loosdrecht, Mark C.M. (author), Witkamp, G.J. (author)
Phosphate is a vital nutrient but its presence in surface waters even at very low concentrations can lead to eutrophication. Adsorption is often suggested as a step for reducing phosphate down to very low concentrations. Porous metal oxides can be used as granular adsorbents that have a high surface area and hence a high adsorption capacity....
journal article 2019
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Thouement, H.A.A. (author), Kuder, Tomasz (author), Heimovaara, T.J. (author), van Breukelen, B.M. (author)
Back-diffusion of chlorinated ethenes (CEs) from low-permeability layers (LPLs) causes contaminant persistence long after the primary spill zones have disappeared. Naturally occurring degradation in LPLs lowers remediation time frames, but its assessment through sediment sampling is prohibitive in conventional remediation projects. Scenario...
journal article 2019
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Zhang, Y. (author), Ye, G. (author)
An analytical model for predicting the relative chloride diffusion coefficient in cementitious materials at different degrees of water saturation is presented in this paper. The model is developed based on the Nernst-Einstein equation and conductivity of cementitious electrolyte, as well as on moisture distribution in the pore structure. Good...
journal article 2019
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Šavija, B. (author), Zhang, H. (author), Schlangen, E. (author)
Properties of concrete are, to a large extent, dependent on the properties of its binding constituent, hydrated cement paste. Therefore, knowledge of properties of hydrated cement paste is crucial for predicting concrete behavior. This paper presents an experimentally informed approach for modeling elastic and transport properties of cement...
journal article 2019
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Abdikivanani, B. (author), Hendriks, R.C. (author), van der Veen, A.J. (author), de Groot, N.M.S. (author)
Finding the hidden parameters of the cardiac electrophysiological model would help to gain more insight on the mechanisms underlying atrial fibrillation, and subsequently, facilitate the diagnosis and treatment of the disease in later stages. In this work, we aim to estimate tissue conductivity from recorded electrograms as an indication of...
journal article 2019
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Brown, Jenna (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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Tsimpanogiannis, Ioannis N. (author), Moultos, O. (author), Franco, Luís F.M. (author), Spera, Marcelle B.de M. (author), Erdös, M. (author), Economou, Ioannis G. (author)
We present a detailed overview of classical molecular simulation studies examining the self-diffusion coefficient of water. The self-diffusion coefficient is directly associated with the calculations of tracer or mutual diffusion coefficient of mixtures and, therefore, is a fundamental transport property, essential for an accurate description...
review 2019
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Schraven, D.F.J. (author), Bukvić, Uroš (author), Di Maio, F. (author), Hertogh, M.J.C.M. (author)
Recent literature has recognized the difficulty of implementing Circular Economy (CE) in supply chains. This has not yet led to a clear understanding of the reasons. This is critical to address, because the difficulty stalls the CE transition and suspends its benefits. Therefore, this paper investigates the reasons for the difficulty of...
journal article 2019
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Tunn, V.S.C. (author), Fokker, Richard (author), Luijkx, K.A. (author), de Jong, S.A.M. (author), Schoormans, J.P.L. (author)
Access-based product-service systems (AB-PSS) have the potential to lower environmental impacts. Currently, a lack of consumer acceptance and, consequently, low adoption levels of AB-PSS are challenges preventing the realisation of their sustainability potential. This study proposes temporary product customisation to lower barriers for the...
journal article 2019
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Mulder, I.J. (author), Jaskiewicz, T.J. (author), Morelli, Nicola (author)
Along with the urgent need to reinvent our society, a series of paradigm shifts are already shaping transitions toward a more participatory and digital society. The current work takes stock of the promise of open data as a new resource and elaborates upon the maker movement, which has spurred people’s capacity to participate and has provided...
journal article 2019
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Bouts, Mark J.R.J. (author), Van Der Grond, Jeroen (author), Vernooij, Meike W. (author), Koini, Marisa (author), Schouten, T.M. (author), de Vos, Frank (author), Feis, Rogier A. (author), Lechner, Anita (author), Niessen, W.J. (author), More Authors (author)
Early and accurate mild cognitive impairment (MCI) detection within a heterogeneous, nonclinical population is needed to improve care for persons at risk of developing dementia. Magnetic resonance imaging (MRI)-based classification may aid early diagnosis of MCI, but has only been applied within clinical cohorts. We aimed to determine the...
journal article 2019
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van Linden, N. (author), Spanjers, H. (author), van Lier, J.B. (author)
Ammonium (NH<sub>4</sub><sup>+</sup>) can be recovered from water for fertiliser production or even energy production purposes. Because NH<sub>4</sub><sup>+</sup> recovery is more effective at increased concentrations, electrodialysis (ED) can be used to concentrate NH<sub>4</sub><sup>+</sup> from side streams, such as sludge reject water,...
journal article 2019
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Gamarino, M. (author)
This thesis develops novel first-principle methods to correct homogenization errors in nodal cross sections and discontinuity factors. Its aim is to improve the accuracy of nodal diffusion simulations of heterogeneous core configurations. This research builds upon previous work conducted at Framatome (Paris, France). It is based on a modal...
doctoral thesis 2018
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Vinke, Elisabeth J. (author), De Groot, Marius (author), Venkatraghavan, Vikram (author), Klein, S. (author), Niessen, W.J. (author), Ikram, Mohammad A. (author), Vernooij, Meike W. (author)
With aging, the brain undergoes several structural changes. These changes reflect the normal aging process and are therefore not necessarily pathologic. In fact, better understanding of these normal changes is an important cornerstone to also disentangle pathologic changes. Several studies have investigated normal brain aging, both cross...
journal article 2018
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Zhang, Y. (author)
Chloride-induced reinforcement corrosion, caused by chloride diffusion in the unsaturated concrete cover, is a major durability problem of concrete structures. Current concepts for concrete mixture design and for service life prediction are generally based on the understanding of the chloride diffusion coefficient of saturated concrete. This...
doctoral thesis 2018
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Bracco Garcia, M.P. (author), Torrelo Villa, G. (author), Noordam, Sander (author), de Jong, Glenn (author), Hanefeld, U. (author)
The hydroxynitrile lyase from Prunus amygdalus was immobilized on Celite R-633. The immobilized enzyme could successfully be utilized in buffer saturated MTBE and excellent conversions of benzaldehyde to R-mandelonitrile were observed. No leaching occurred. To achieve high enantioselectivities, the suppression of the undesired background...
journal article 2018
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Versteylen, C.D. (author)
Advances in self-healing creep steels are driven by the understanding of its mechanism. Previous work on self-healing creep metals has shown selective precipitation inside the creep cavities, which has a beneficial effect on the creep lifetime. This effect occurswhen a solute supersaturation exists at the creep temperature. In the case of self...
doctoral thesis 2018
Searched for: subject:"diffusion"
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