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Barth, R. (author)Genetic information encoded in the DNA sequences is maintained, replicated, and transcribed across the tree of life. Organisms evolved multiple hierarchical layers of chromosome organization which ensure that DNA can be contained but also processed within individual cells. This thesis focuses on SMC (Structural Maintenance of Chromosomes)...doctoral thesis 2024
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Besselink, Jonas (author)In light of transitioning towards a sustainable, low-carbon energy system, NdFeB (Neodymium-Iron-Boron) permanent magnets are set to play a crucial role. These magnets, currently the strongest available, are integral to the functioning of wind turbines, electric cars, and various digital appliances. Their superior performance is attributed to...master thesis 2024
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Veldman, L.M. (author)This thesis presents experiments on the free, coherent spin dynamics ofmagnetic nanostructures built out of individual titanium atoms adsorbed on bilayer MgOislands grown on a Ag(100) crystal inside a scanning tunneling microscope (STM).We use the exchange field of the spin-polarized probe tip to tune the eigenstates of the magnetic structures...doctoral thesis 2024
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Meskers, Marthe (author)Myocardial perfusion, the blood flow to the heart muscle, can be evaluated by tracing the passage of a contrast agent using cardiac magnetic resonance (CMR) imaging. This technique, well-established for diagnosing coronary artery disease, is limited by the necessity for breath-holding, subjective assessment, and low myocardial coverage. In this...master thesis 2024
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Analytical modelling of air-gap magnetic field of surface mounted permanent magnet motors for dronesJones, Joshua (author)Drones -- small (or not so small) remotely controlled flying devices -- are seeing rapidly increasing use in many fields of application and human activities ranging from recreation, competitive sports, last-mile logistics, espionage, exploration, to media production, and even warfare. The abundance of these devices brings with it the risk of...master thesis 2024
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Tišma, M. (author)This thesis explores the mechanisms that underlie chromosome organization in bacteria. Bacteria are considered amongst the simplest living organisms on our planet. They lack the cellular organization found in other domains of life (Archaea or Eukaryotics) and often have simpler life cycles. Over the past decade, we gained increasing knowledge...doctoral thesis 2024
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Vermeulen, Mark (author)Magnetic Resonance Imaging (MRI) is an important imaging modality, since it can create high-resolution cross-sectional images of the human body. In MRI scanners, the nuclear spin magnetization is excited using radio-frequency pulses. Images are created based on the time-evolution of this magnetization, which is characterized by relaxation times ...master thesis 2024
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Hofker, Tjipke (author)Superconductors expel magnetic fields, a phenomenon known as the Meissner effect. This effect makes it notoriously difficult to predict the magnetic field around a superconductor. One successful way of calculating these fields is through conformal mappings; coordinate transformations that preserve Maxwell's equations of magnetic fields in free...bachelor thesis 2024
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Maassen, Timo (author)Research Objective & Methodology<br/>The COVID-19 supply disruptions and the energy crisis triggered by the Russian-Ukrainian conflict emphasize the EU's structural supply dependencies and potential damages during crises. It underscores the critical risk factors, particularly Rare Earth Elements (REEs), which are highly susceptible to supply...master thesis 2024
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Van den Eynde, Jef (author), Westenberg, Jos J.M. (author), Hazekamp, Mark G. (author), Lamb, Hildo J. (author), Jongbloed, Monique R.M. (author), Wentzel, Jolanda J. (author), Kenjeres, S. (author), Dekkers, Ilona A. (author), Rijnberg, F.M. (author)BACKGROUND: Kidney disease is the most important predictor of death in patients with a Fontan circulation, yet its clinical and hemodynamic correlates have not been well established. METHODS AND RESULTS: A total of 53 ambulatory patients with a Fontan circulation (median age, 16.2 years, 52.8% male patients) underwent advanced cardiovascular...journal article 2024
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van Oossanen, R. (author), Maier, A. (author), Godart, Jérémy (author), Pignol, Jean Philippe (author), Denkova, A.G. (author), van Rhoon, Gerard C. (author), Djanashvili, K. (author)Objective: To investigate the potential of hybrid Pd/Fe-oxide magnetic nanoparticles designed for thermo-brachytherapy of breast cancer, considering their specific loss power (SLP) and clinical constraints in the applied magnetic field. Methods: Hybrid nanoparticles consisting of palladium-core and iron oxide shell of increasing thickness,...journal article 2024
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Atzampou, P. (author), Meijers, P.C. (author), Tsouvalas, A. (author), Metrikine, A. (author)Current offshore wind turbine installation and positioning methods require mechanical equipment attached on the lifted components and human intervention. The present paper studies the development of a contactless motion compensation technique by investigating a magnetically controlled pendulum. The technique involves the interaction of a...journal article 2024
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Du, Yunlu (author), Huang, Yunkai (author), Guo, Baocheng (author), Djelloul-Khedda, Zakarya (author), Peng, Fei (author), Yao, Y. (author), Dong, J. (author)In this article, a nonlinear semianalytical model (SAM) is presented to predict the magnetic field distribution (MFD) and electromagnetic performances (EPs) in the cubic spoke-type permanent magnet (PM) machine. To model the rectangular PMs, the rectangular PM is simplified as a combination of fan-shaped regions with different arc angles....journal article 2024
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Zhao, W. (author), Ghafoor, S. (author), Lagerweij, Gijs Willem (author), Rietveld, Gert (author), Vaessen, P.T.M. (author), Ghaffarian Niasar, M. (author)This paper comprehensively reviews several techniques that address the static and dynamic voltage balancing of series-connected MOSFETs. The effectiveness of these techniques was validated through simulations and experiments. Dynamic voltage-balancing techniques include gate signal delay adjustment methods, passive snubbers, passive clamping...journal article 2024
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Ambrosini, P. (author), Azizian Amiri, S. (author), Zeestraten, Eliane (author), van Ginhoven, Tessa (author), Marroquim, Ricardo (author), van Walsum, T. (author)Purpose: For tumor resection, surgeons need to localize the tumor. For this purpose, a magnetic seed can be inserted into the tumor by a radiologist and, during surgery, a magnetic detection probe informs the distance to the seed for localization. In this case, the surgeon still needs to mentally reconstruct the position of the tumor from the...journal article 2024
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Hoekwater, William B. (author), Ronaes, E.P. (author), Hassan HosseinNia, S. (author)Recent studies have shown that tunable magnets (soft permanent magnets) can significantly reduce Joule heating in electromagnetic actuators. To achieve high motion accuracy and repeatability, this article proposes a novel actuator design with a linearized force-flux relation. In prior designs of variable reluctance tunable magnet actuators,...journal article 2024
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Christodoulou, Anthony G. (author), Cruz, Gastao (author), Arami, A. (author), Weingärtner, S.D. (author), Artico, Jessica (author), Peters, Dana (author), Seiberlich, Nicole (author)Cardiovascular magnetic resonance (CMR) protocols can be lengthy and complex, which has driven the research community to develop new technologies to make these protocols more efficient and patient-friendly. Two different approaches to improving CMR have been proposed, specifically “all-in-one” CMR, where several contrasts and/or motion states...review 2024
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Starmans, M.P.A. (author), Miclea, Razvan L. (author), Vilgrain, Valerie (author), Ronot, Maxime (author), Purcell, Yvonne (author), Verbeek, Jef (author), Niessen, W.J. (author), Klein, Stefan (author), Thomeer, Maarten G. (author)Rationale and Objectives: Distinguishing malignant from benign liver lesions based on magnetic resonance imaging (MRI) is an important but often challenging task, especially in noncirrhotic livers. We developed and externally validated a radiomics model to quantitatively assess T2-weighted MRI to distinguish the most common malignant and...journal article 2024
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Mier Escurra, C. (author), Mor, A. R. (author), Luo, T. (author), Vaessen, P.T.M. (author)The correct identification of partial discharges (PDs) is instrumental for the maintenance plan in gas-insulated systems (GIS). However, onsite PD measurements are difficult, especially in HVDC systems, where partial discharges can be confused with interference. This paper proposes a method to discern PDs from interferences based on the GIS...journal article 2024
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Li, Z. (author), Wang, L. (author), Liu, R. (author), Mirzadarani, R. (author), Luo, T. (author), Lyu, D. (author), Ghaffarian Niasar, M. (author), Qin, Z. (author)Traditional methods such as Steinmetz's equation (SE) and its improved variant (iGSE) have demonstrated limited precision in estimating power loss for magnetic materials. The introduction of Neural Network technology for assessing magnetic component power loss has significantly enhanced accuracy. Yet, an efficient method to incorporate detailed...journal article 2024