Searched for: subject%3A%22Diagnostics%22
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Brachmi, Walid (author)
As turbofan technology advances, periodic engine inspection and maintenance still remain a significant part of aircraft operational costs. Operators are thus looking to engine condition-based maintenance (ECBM), leveraging sensor data and numerical engine models for continuous diagnostics. KLM Engine Services developed a surrogate model based on...
master thesis 2024
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Wolfkamp, Wouter (author), Meijer, Joyce (author), van Hoeve, Jolanda C. (author), van Erning, Felice (author), de Geus-Oei, L.F. (author), de Hingh, Ignace (author), Veltman, Jeroen (author), Siesling, Sabine (author)
Background: In the Netherlands, the COVID-19 pandemic resulted in a temporary halt of population screening for cancer and limited hospital capacity for non-COVID care. We aimed to investigate the impact of the pandemic on the in-hospital diagnostic pathway of breast cancer (BC) and colorectal cancer (CRC). Methods: 71,159 BC and 48,900 CRC...
journal article 2024
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Mazza, F. (author), Castellanos, Leonardo (author), Klyukin, Dmitry (author), Bohlin, G.A. (author)
Coherent anti-Stokes Raman scattering (CARS) spectroscopy has been used to provide gas-phase quantitative scalar information (e.g. temperature, density, and species concentrations) for more than 5 decades. This technique is renowned for its ability to realize non-intrusive in-situ measurements in harsh environments with excellent spatial and...
book chapter 2024
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Bieber, M.T. (author)
Spacecraft and aircraft systems collect health-related data continuously, which can give an indication of the systems' health status. While they rarely occur, the repercussions of such system anomalies, faults, or failures can be severe, safety-critical and costly. Therefore, the data are used to anticipate any kind of anomalous behaviour or...
doctoral thesis 2023
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Jha, Mayanka (author)
With ongoing research towards clean combustion, hydrogen has been identified as a potential alternative to natural gas fuel, for example in power generation sectors utilizing gas turbines because of their inherent nature of being a carbon-free energy carrier. However, it is crucial to clarify that the ultimate goal is not just carbon-free...
master thesis 2023
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Mazza, F. (author)
The present dissertation covers the development of ultrabroadband femtosecond/picosecond coherent Raman spectroscopy (CRS) to measure temperature and species concentrations in gas-phase chemically reacting flows.<br/>Since its first demonstration in 1965, CRS has been vastly employed as a non-linear optical spectroscopic technique to quantify...
doctoral thesis 2023
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Mishra, Shantiswaroop (author)
This report emphasizes the importance of implementing quality control methods in the production machines at HyET Solar for assessing the quality of deposited materials. The focus is on two key steps: the deposition of the front transparent conductive oxide (TCO) layer and the deposition of silicon layers. Models were developed to characterize...
master thesis 2023
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Madhavan, Aravind Krishna (author)
This investigation focuses on the premixed conical flame, a mainstay of combustion diagnostics. While extensive studies have explored high-frequency oscillations in the canonical Bunsen flame, little attention has been given to low-frequency oscillations affecting flame fronts. This thesis aims to explain the origins of these oscillations and...
master thesis 2023
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Walstra, Anna (author)
<b>Objective</b>: The two-fold aim of this phantom study was first to evaluate the accuracy of pulmonary nodule detection for lung cancer screening at progressively lower dose levels of photon-counting computed tomography (PC-CT) and, second, to objectively compare the image quality across different acquisition and reconstruction settings,...
master thesis 2023
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Onasanya, A.A. (author), Bengtson, Michel (author), Agbana, T.E. (author), Oladunni, Opeyemi (author), van Engelen, J.M.L. (author), Oladepo, Oladimeji (author), Diehl, J.C. (author)
Designing new and inclusive diagnostic tools to detect Neglected Tropical Diseases (NTDs) to achieve rational disease control requires a co-design process where end-users’ input is important. Failure to involve all potential end-users in new diagnostics for NTDs can result in low use and adoption failure, leading to persistent infection hot...
journal article 2023
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Ferreira, Vanessa M. (author), Plein, Sven (author), Wong, Timothy C. (author), Tao, Q. (author), Raisi-Estabragh, Zahra (author), Jain, Supriya S. (author), Han, Yuchi (author), Ojha, Vineeta (author), Kim, Jiwon (author)
Coronavirus disease 2019 (COVID-19) is an ongoing global pandemic that has affected nearly 600 million people to date across the world. While COVID-19 is primarily a respiratory illness, cardiac injury is also known to occur. Cardiovascular magnetic resonance (CMR) imaging is uniquely capable of characterizing myocardial tissue properties in...
review 2023
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Onasanya, A.A. (author), Bengtson, Michel (author), de Goeje, Ludo (author), van Engelen, J.M.L. (author), Diehl, J.C. (author), van Lieshout, Lisette (author)
IntroductionThe INSPIRED project aims to develop inclusive Digital Optical Diagnostic Devices (DODDs) for schistosomiasis, to support disease management by enabling rapid diagnostic results, to improve efficient data management to guide decision-making and to provide healthcare workers with critical health information to facilitate follow-up...
journal article 2023
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Ye, Ziliang (author), van Schie, M.S. (author), Pool, Lisa (author), Heida, Annejet (author), Knops, Paul (author), Taverne, Yannick J.H.J. (author), Brundel, Bianca J.J.M. (author), de Groot, N.M.S. (author)
Aims: Areas of conduction inhomogeneity (CI) during sinus rhythm may facilitate the initiation and perpetuation of atrial fibrillation (AF). Currently, no tool is available to quantify the severity of CI. Our aim is to develop and validate a novel tool using unipolar electrograms (EGMs) only to quantify the severity of CI in the atria....
journal article 2023
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van de Ruit, M.L. (author), van der Velden, Levinia L. (author), Onneweer, Bram (author), Benner, Joyce L. (author), Haarman, Claudia J.W. (author), Ribbers, G.M. (author), Selles, R.W. (author)
Background: Upper limb impairments in a hemiparetic arm are clinically quantified by well-established clinical scales, known to suffer poor validity, reliability, and sensitivity. Alternatively, robotics can assess motor impairments by characterizing joint dynamics through system identification. In this study, we establish the merits of...
journal article 2023
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van der Sar, Iris G. (author), van Jaarsveld, Nynke (author), Spiekerman, Imme A. (author), Toxopeus, Floor J. (author), Langens, Quint L. (author), Wijsenbeek, Marlies S. (author), Dauwels, J.H.G. (author), Moor, Catharina C. (author)
Electronic nose (eNose) technology is an emerging diagnostic application, using artificial intelligence to classify human breath patterns. These patterns can be used to diagnose medical conditions. Sarcoidosis is an often difficult to diagnose disease, as no standard procedure or conclusive test exists. An accurate diagnostic model based on...
journal article 2023
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Marang-van de Mheen, P.J. (author), Thomas, Eric J. (author), Graber, Mark L. (author)
contribution to periodical 2023
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Lantsoght, E.O.L. (author)
As the existing bridge stock is aging, the task of assessing these bridges becomes increasingly important. One of the assessment methods for existing bridges is load testing. Improvements in the field of diagnostic load testing are related to the use of numerical models. Improvements in the field of proof load testing focus on the safety of...
journal article 2023
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Broer, Agnes A.R. (author), Yue, N. (author), Galanopoulos, Georgios (author), Benedictus, R. (author), Loutas, Theodoros (author), Zarouchas, D. (author)
To move towards a condition-based maintenance practice for aircraft structures, design of reliable health management methodologies is required. Development of diagnostic methodologies is commonly realised on simplified sample structures with assumptions that methodologies can be adapted for application to realistic aircraft structures under...
conference paper 2023
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Thornquist, Ona (author)
With the onset of climate change it is crucial to eliminate emissions, particularly for aviation reliant on gas turbine combustion. Computational models aid combustor improvement, but experimental data needed for validation is difficult to obtain. Fortunately, laser diagnostics can now achieve non-intrusive, high-resolution combustion...
master thesis 2022
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de Bruin, Bram (author)
Over the years, aero engines have evolved into the efficient turbofans present on commercial airliners today. Although these engines are very reliable, they still experience degradations in performance and reductions in component health. The degradation affects the operation of the engine, which can be measured using the pressure, temperature,...
master thesis 2022
Searched for: subject%3A%22Diagnostics%22
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