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Surkatti, Riham (author), van Loosdrecht, Mark C.M. (author), Hussein, Ibnelwaleed A. (author), El-Naas, Muftah H. (author)This study investigates the development of polyvinyl alcohol (PVA) gel matrices for biomass immobilization in wastewater treatment. The PVA hydrogels were prepared through a freezing–thawing (F-T) cross-linking process and reinforced with high surface area nanoparticles to improve their mechanical stability and porosity. The PVA/nanocomposite...journal article 2024
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Wan, Z. (author), Zhang, Y. (author), Xu, Y. (author), Šavija, B. (author)Additively manufactured vascular networks have great potential for use in autonomous self-healing of cementitious composites as they potentially allow multiple healing events to take place. However, the existence of a vascular tube wall may impede with the healing efficiency if it does not rupture timely to release the healing agent. The...journal article 2023
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Zhang, Shizhe (author)Alkali-activated Materials (AAMs), including those classified as geopolymer, are obtained through the reaction between a solid precursor and an alkaline solution. Compared with ordinary Portland cement (OPC) binders, these materials maintain comparable mechanical properties but have the advantage of reducing greenhouse gas emissions and...doctoral thesis 2022
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Sánchez-Margallo, Juan A. (author), Tas, L. (author), Moelker, Adriaan (author), van den Dobbelsteen, J.J. (author), Sánchez-Margallo, Francisco M. (author), Langø, Thomas (author), van Walsum, T. (author), van de Berg, N.J. (author)Purpose: To present a novel methodical approach to compare visibility of percutaneous needles in ultrasound images. Methods: A motor-driven rotation platform was used to gradually change the needle angle while capturing image data. Data analysis was automated using block-matching-based registration, with a tracking and refinement step. Every...journal article 2021
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Jong, Lynn-Jade (author)Transvenous lead extractions (TLEs) are minimally invasive procedures in which pacing or implantable cardioverter defibrillator leads are extracted under guidance of 2D X-ray fluoroscopy. Despite the fact that fluoroscopy is currently the gold standard for TLEs, it has several limitations in terms of visualization of anatomical structures, areas...master thesis 2019
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van de Berg, N.J. (author), Sánchez-Margallo, Juan A. (author), van Dijke, A.P. (author), Langø, Thomas (author), van den Dobbelsteen, J.J. (author)During ultrasound-guided percutaneous interventions, needle localization can be a challenge. To increase needle visibility, enhancements of both the imaging methods and the needle surface properties have been investigated. However, a methodical approach to compare potential solutions is currently unavailable. The work described here involves...journal article 2019
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de Jong, T.L. (author), Pluymen (student), L.H. (author), van Gerwen, D.J. (author), Kleinrensink, GJ (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Medical phantoms can be used to study needle-tissue interaction and to train medical residents. The purpose of this research is to study the suitability of polyvinyl alcohol (PVA) as a liver tissue mimicking material in terms of needle-tissue interaction. Insertions into ex-vivo human livers were used for reference. Six PVA samples were...journal article 2017