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Arslan, A. (author)Digital flat panel X-ray imagers are currently using a-Si and poly-Si thin-film-transistors (TFTs). a-Si TFT permits the use of large area substrates, however, due to the amorphous nature, the carrier mobility is very low (<1 cm2/Vs). Poly-Si TFT improves the mobility (~150 cm2/Vs) but due to random grain boundaries, the defect density is still...doctoral thesis 2015
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Ozmen, N. (author), Dapp, R. (author), Zapf, M. (author), Gemmeke, H. (author), Ruiter, N.V. (author), Van Dongen, K.W.A. (author)Ultrasound is frequently used to evaluate suspicious masses in breasts. These evaluations could be improved by taking advantage of advanced imaging algorithms, which become feasible for low frequencies if accurate knowledge about the phase and amplitude of the wave field illuminating the volume of interest is available. In this study, we compare...journal article 2015
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Van Turnhout, A.G. (author), Kleerebezem, R. (author), Heimovaara, T.J. (author)In this study, we aim to validate the reaction network with an idealized experiment. We want to show that 1) rate controlling parameters are identifiable from the measured data by inverse modeling, and 2) that this network is able to predict the measured emissions in the experiment given the initial conditions. In the experiment, cabbage is used...conference paper 2015
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Zhou, J. (author), Van Turnhout, A.G. (author), Heimovaara, T.J. (author), Afanasyev, M. (author)The spatial and temporal distribution of precipitated minerals is one of the key factors governing various processes in the sub-surface environment, including microbially influenced corrosion (MIC) (Huang, 2002), bio-cementation (van Paassen et al., 2010) and sediment diagenesis (Paraska et al., 2014). The mineral precipitation not only affects...conference paper 2015
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- Heimovaara, T.J. (author), Oonk, H. (author), Scharf, H. (author) conference paper 2015
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Electrical Sustainable Energy Department (author)In the present deliverable, the results of the workshop ‘UMBRELLA Workshop on Optimized Solutions’ and ‘UMBRELLA Workshop on System State Modelling and Toolbox Design’ are summarized. The workshops were both hosted at ENTSO-E’s premises on October 22, 2013 and October 23rd, 2014 with a total number of 15 and 33 registered participants...report 2015
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Konstantaki, L.A. (author), Ghose, R. (author), Draganov, D.S. (author), Heimovaara, T.J. (author)Leachate and gas are a product of biochemical reactions occurring inside the landfill. Treatment technologies (e.g., recirculation of leachate) are developed to reduce the production of leachate. Imaging the location of the wet and gas pockets inside the landfill can help improve the treatment technologies. Wet pockets occur inside the landfill...conference paper 2015
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Khoshnevis Gargar, N. (author), Mahani, H. (author), Rehling, J.G. (author), Vincent-Bonnieu, S. (author), Farajzadeh, R. (author)Gas injection projects often suffer from poor volumetric sweep because under reservoir conditions the density and viscosity differences between the gas and the in-situ oil leads to override and bypassing of much of the oil in place. Foam has been suggested as a potential solution to this shortcoming and has shown success in some of the field...conference paper 2015
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Van Turnhout, A.G. (author), Brandstatter, C. (author), Kleerebezem, R. (author), Heimovaara, T.J. (author)The aim of our study is to investigate previously mentioned aspects with scenario analyses via a mechanistic biogeochemical reaction network model that contains the emission controlling reactions. In order to find such a network, we apply the gray modeling toolbox developed by van Turnhout et al. (2015) on a measured dataset used in the study of...conference paper 2015
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Pham-Quoc Cuong, P. (author)Heterogeneous multicore systems are becoming increasingly important as the need for computation power grows, especially when we are entering into the big data era. As one of the main trends in heterogeneous multicore, hardware accelerator systems provide application specific hardware circuits and are thus more energy efficient and have higher...doctoral thesis 2015
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Heimovaara, T.J. (author), Bun, A. (author), Van Turnhout, A.G. (author)In order to develop novel approaches for reducing the after-care of Municipal Solid Waste (MSW) sanitary landfills methods are required with which we can quantify the emission potential present in waste bodies. Currently full-scale experiments are being prepared at three Dutch landfills based on enhanced infiltration by irrigation and leachate...conference paper 2015
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Fatemi, S.A. (author), Jansen, J.D. (author), Rossen, W.R. (author)An enhanced-oil-recovery pilot test has multiple goals, among them to verify the properties of the EOR agent in situ. Given the complexity of EOR processes and the inherent uncertainty in the reservoir description, it is a challenge to discern the properties of the EOR agent in situ. We present a simple case study to illustrate this challenge: a...conference paper 2015
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Edeling, W.N. (author)The goal of this thesis is to make predictive simulations with Reynolds-Averaged Navier-Stokes (RANS) turbulence models, i.e. simulations with a systematic treatment of model and data uncertainties and their propagation through a computational model to produce predictions of quantities of interest with quantified uncertainty. To do so, we make...doctoral thesis 2015
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New estimates of potential impacts of sea level rise and coastal floods in Poland (discussion paper)Paprotny, D. (author), Terefenko, P. (author)Polish coastal zone is thought to be of the most exposed to sea level rise in Europe. With climate change expected to raise mean sea levels between 26 and 200 cm by the end of the century, and storms increasing in severity, accurate estimates of those phenomena are needed. Recent advances in quality and availability of spatial data in Poland...journal article 2015
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Roebroeks, J. (author), Eftekhari, A.A. (author), Farajzadeh, R. (author), Vincent-Bonnieu, S. (author)Foam flooding as a mechanism to enhance oil recovery has been intensively studied and is the subject of multiple research groups. However, limited stability of surfactant-generated foam in presence of oil and low chemical stability of surfactants in the high temperature and high salinity of an oil reservoir are among the reasons for foam EOR not...conference paper 2015
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- Van Arem, B. (author) lecture notes 2015
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Jones, S.A. (author), Van der Bent, V. (author), Farajzadeh, R. (author), Rossen, W.R. (author), Vincent-Bonnieu, S. (author)Aqueous foams are a means of increasing the sweep efficiency of enhanced oil recovery processes. An understanding of how a foam behaves in the presence of oil is therefore of great importance when selecting suitable surfactants for EOR processes. The consensus is currently that the most reliable method for determining the foam behavior in the...conference paper 2015
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Baviskar, S.M. (author), Heimovaara, T.J. (author)We believe the unsaturated and heterogeneous nature of landfills leads to the emergence of preferential pathways of water and dissolved compounds through the waste body. In this research we explore the origin of preferential flow in a porous media with a deterministic numerical model. In this model water flow is modeled with the Richards’...conference paper 2015
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Sagliano, M. (author), Oehlschlagel, T. (author), Theil, S. (author), Mooij, E. (author)One of the most powerful analysis tools to deal with entry guidance problems is the possibility to formulate them as optimal control problems (OCPs). Environmental constraints, actuator limits, and strict requirements on the final conditions can be efficiently transcribed, resulting in a discrete, finite-dimension nonlinear programmming (NLP)...conference paper 2015
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Mei, X. (author), Dai, Z. (author), Van Gelder, P.H.A.J.M. (author), Gao, J. (author)The magnitude of anthropogenic influence, especially dam regulation, on hydrological system is of scientific and practical value for large river management. As the largest dam in the world by far, Three Gorges Dam (TGD) is expected to be a strong evidence on dam impacts on downstream hydrological regime. In this study, statistical methods are...journal article 2015