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Reactive transport modelling of push-pull tests: A versatile approach to quantify aquifer reactivityKruisdijk, E. (author), van Breukelen, B.M. (author)Push-pull tests (PPTs) were evaluated with 1-D radially axisymmetric multi-component geochemical reactive transport modelling (RTM) to assess aquifer reactivity controlling groundwater quality. Nutrient fate and redox processes were investigated in an Aquifer Storage and Recovery (ASR) system, in which oxic tile drainage water (TDW; nitrate ...journal article 2021
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Peng, Liqi (author), Wang, Feifei (author), Zhang, Di (author), Fang, Chao (author), van der Hoek, J.P. (author), Chu, Wenhai (author)The high chlorine dosages in wastewater treatment plants during the COVID-19 pandemic may result in increased formation of disinfection by-products (DBPs), posing great threat to the aquatic ecosystem of the receiving water body and the public health in the downstream area. However, limited information is available on the effect of biological...journal article 2021
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Acosta, Martha N. (author), Gonzalez-Longatt, Francisco (author), Andrade, Manuel A. (author), Rueda, José L. (author), Chamorro, Harold R. (author)The reactive power control mechanisms at the smart inverters will affect the voltage profile, active power losses and the cost of reactive power procurement in a different way. Therefore, this paper presents an assessment of the cost–benefit relationship obtained by enabling nine different reactive power control mechanisms at the smart...journal article 2021
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Wu, Chengwei (author), Yao, Weiran (author), Pan, W. (author), Sun, Guanghui (author), Liu, Jianxing (author), Wu, Ligang (author)This article investigates the secure control problem for cyber-physical systems when the malicious data are injected into the cyber realm, which directly connects to the actuators. Based on moving target defense (MTD) and reinforcement learning, we propose a novel proactive and reactive defense control scheme. First, the system (A,B) is...journal article 2021
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Modaresifar, K. (author), Ganjian, M. (author), Angeloni, L. (author), Minneboo, M.B. (author), Ghatkesar, M.K. (author), Hagedoorn, P.L. (author), Fratila-Apachitei, E.L. (author), Zadpoor, A.A. (author)Despite the potential of small-scale pillars of black titanium (bTi) for killing the bacteria and directing the fate of stem cells, not much is known about the effects of the pillars’ design parameters on their biological properties. Here, three distinct bTi surfaces are designed and fabricated through dry etching of the titanium, each...journal article 2021
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Qiu, Xiujiao (author), Chen, J. (author), Deprez, Maxim (author), Cnudde, Veerle (author), Ye, G. (author), De Schutter, Geert (author)The microstructure of alkali-reactive aggregates, especially the spatial distribution of the pore and reactive silica phase, plays a significant role in the process of the alkali silica reaction (ASR) in concrete, as it determines not only the reaction front of ASR but also the localization of the produced expansive product from where the...journal article 2021
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Guo, Bingbing (author), Li, Z. (author), Fu, Qiang (author), Wang, Yan (author), Huang, Daguan (author), Niu, Ditao (author)Utilizing coral aggregate concrete (CAC) for construction on remote islands can significantly reduce construction cost and period, CO<sub>2</sub> emission, and consumption of non-renewable energy. The durability of reinforced CAC structures is critically influenced by their resistance to chloride attack. In this study, a reactive transport...journal article 2021
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Meijer, Mandy (author), Keo, D.L. (author), van Leeuwen, Judith M.C. (author), Dzyubachyk, Oleh (author), Meijer, Onno C. (author), Vinkers, Christiaan H. (author), Mahfouz, A.M.E.T.A. (author)The biological mechanisms underlying inter-individual differences in human stress reactivity remain poorly understood. We aimed to identify the molecular underpinning of aberrant neural stress sensitivity in individuals at risk for schizophrenia. Linking mRNA expression data from the Allen Human Brain Atlas to task-based fMRI revealed 201...journal article 2021
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Nguyen, Hoa Minh (author), Rueda, José L. (author), Lekić, A. (author), Pham, Hoan Van (author)The paper presents an approach for online centralized control in active distribution networks. It combines a proportional integral (PI) control unit with a corrective control unit (CCU), based on the principle of Model Predictive Control (MPC). The proposed controller is designed to accommodate the increasing penetration of distributed...journal article 2021
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Kadeethum, T. (author), Lee, S. (author), Ballarin, F. (author), Choo, J. (author), Nick, H.M. (author)This paper presents a mixed finite element framework for coupled hydro-mechanical–chemical processes in heterogeneous porous media. The framework combines two types of locally conservative discretization schemes: (1) an enriched Galerkin method for reactive flow, and (2) a three-field mixed finite element method for coupled fluid flow and...journal article 2021
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Ramasamy, Suganthi (author), Ahmad, Z. (author), Bindu, Yerra (author), Rueda, José L. (author)This study investigates the reactive power generation capability of the existing transformerless Photovoltaic Inverter Topologies (PVIT) with their conventional switching strategies. The topologies such as H5, families of H6 (H6, H6-I, H6-II, H6-III and H6-IV), HERIC, and clamped topologies (optimized H5, passive clamped H6 and HBZVR) have been...conference paper 2020
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Stelmach, Fabian (author)This research is focused on the proactive-reactive rescheduling process of the Train Unit Shunting Problem (TUSP) on train maintenance shunting yards. An important difference between a scheduling process and the rescheduling process is that a reschedule must be both feasible and desirable (similar to pre-schedule), while a schedule does not...master thesis 2020
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Zhou, Jianchao (author)Stability of dikes is a national security issue for densely populated low-lying countries situated in delta areas, like the Netherlands. One of the dominant dike failuremechanisms in the Netherlands is piping, where high seepage flow rates transport sand particles and subsequently form a ’pipe’ under a dike structure. As such, one manner to...doctoral thesis 2020
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Alberda van Ekenstein, Anna (author)The changing climate and the need for a new purpose for End-of-Life concrete increased the importance and interest of concrete recycling. To decrease the environmental footprint of concrete, in which cement has the highest contribution, it would be of great importance to be able to recycle cement, which would positively affect the environment....master thesis 2020
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Keizers, Jurre (author)5-hydroxymethylfurfural (HMF) is a versatile renewable base chemical, which can be produced by the acid-catalyzed dehydration of fructose. At this time HMF cannot yet compete with oil-based analogues, such as p-xylene, due to the high costs of production. Future incentives to encourage the transition to a bio-based economy may increase the...master thesis 2020
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Huang, Hongjie (author)Water is one of the long-standing problems in Sint Maarten. Water supply is scarce while water demand is high. Water pollution and incomplete infrastructure also needs to be tackled. How can a cluster scale decentralized water management system solve water challenges in the hurricane-prone environment of Sint Maarten is the research question....master thesis 2020
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Cheng, Yiwei (author), Arora, Bhavna (author), Şengör, S. Sevinç (author), Druhan, Jennifer L. (author), Wanner, Christoph (author), van Breukelen, B.M. (author), Steefel, Carl I. (author)Microbially mediated sulfate reduction is a ubiquitous process in many subsurface systems. Isotopic fractionation is characteristic of this anaerobic process, since sulfate-reducing bacteria (SRB) favor the reduction of the lighter sulfate isotopologue (S<sup>32</sup>O<sub>4</sub><sup>2−</sup>) over the heavier isotopologue (S<sup>34</sup>O...journal article 2020
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Meulenbroek, B.J. (author), Farajzadeh, R. (author), Bruining, J. (author)Recently, there is an increased interest in reactive flow in porous media, in groundwater, agricultural and fuel recovery applications. Reactive flow modeling involves vastly different reaction rates, i.e., differing by many orders of magnitude. Solving the ensuing model equations can be computationally intensive. Categorizing reactions...journal article 2020
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Kozijn, A. E. (author), Tartjiono, M. T. (author), Ravipati, S. (author), van der Ham, F. (author), Barrett, D. A. (author), Mastbergen, S. C. (author), Korthagen, N. M. (author), Lafeber, F. P.J.G. (author), Zuurmond, A. M. (author), Bobeldijk, I. (author), Weinans, Harrie (author), Stoop, R. (author)Objective: C-reactive protein (CRP) levels can be elevated in osteoarthritis (OA) patients. In addition to indicating systemic inflammation, it is suggested that CRP itself can play a role in OA development. Obesity and metabolic syndrome are important risk factors for OA and also induce elevated CRP levels. Here we evaluated in a human CRP ...journal article 2019
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Nafezarefi, F. (author), Cornelius, S. (author), Nijskens, J. (author), Schreuders, H. (author), Dam, B. (author)Thin films of yttrium oxy-hydride have interesting, reversible photochromic properties, the origin of which is poorly understood. To investigate the role of point defect mobility, we probed the effect of lattice contraction as induced by the addition of zirconium. Interestingly, we find no loss of photochromic contrast for Y <sub>1-z</sub>...journal article 2019