Searched for: mods_originInfo_publisher_s%3A%22IOP%255C+Publishing%22
(41 - 60 of 108)
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Liu, K. (author), Vardon, P.J. (author), Arnold, P. (author), Hicks, M.A. (author)Hysteresis is a well-known phenomenon that exists in the soil water retention behaviour of unsaturated soils. However, there is little research on the effects of hysteresis on slope stability. If included in slope stability analyses, commonly the suction in the unsaturated zone is taken as non-hysteretic. In this paper, the authors investigate...conference paper 2015
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Peters, T.J. (author), Tichem, M. (author)This paper proposes a microfabrication process for the reliable release of SiO2 beam structures. These structures are intended to be utilized in SiO2 photonic MEMS. A major fabrication challenge is the release of thick (>10 ?m) SiO2 structures with high yield. A single mask process is developed based on temporary reinforcement of the SiO2...journal article 2015
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Yao, Y. (author), Docter, M. (author), De Ridder, D. (author), Joo, C. (author)Proteins are vital in all biological systems as they constitute the main structural and functional components of cells. Recent advances in mass spectrometry have brought the promise of complete proteomics by helping draft the human proteome. Yet, this commonly used protein sequencing technique has fundamental limitations in sensitivity. Here we...journal article 2015
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Cambraia Lopes, P. (author), Clementel, E. (author), Crespo, P. (author), Henrotin, S. (author), Huizenga, J. (author), Janssens, G. (author), Parodi, K. (author), Prieels, D. (author), Roellinghoff, F. (author), Smeets, J. (author), Stichelbaut, F. (author), Schaart, D.R. (author)Proton range monitoring may facilitate online adaptive proton therapy and improve treatment outcomes. Imaging of proton-induced prompt gamma (PG) rays using a knife-edge slit collimator is currently under investigation as a potential tool for real-time proton range monitoring. A major challenge in collimated PG imaging is the suppression of...journal article 2015
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Ingolfsson, O. (author), Kumar, R. (author), Hagen, C.W. (author), Hari, S. (author)To study the potential role of low energy secondary electrons in focused electron beam induced deposition (FEBID) we have studied FEBID using 1,1-dichloro-1-silacyclohexane, silacyclohexane and 1,3,5-trisilacyclohexane. While the first of these compounds shows appreciable cross sections for dissociative electron attachment (DEA) in the gas phase...journal article 2015
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Tabacchini, V. (author), Borghi, G. (author), Schaart, D.R. (author)Gamma-ray detectors based on bright monolithic scintillation crystals coupled to pixelated photodetectors are currently being considered for several applications in the medical imaging field. In a typical monolithic detector, both the light intensity and the time of arrival of the earliest scintillation photons can be recorded by each of the...journal article 2015
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Naeimi, M. (author), Li, Z. (author), Dollevoet, R.P.B.J. (author)A numerical model of wheel-track system is developed for nucleation of squat-type fatigue cracks in rail material. The model is used for estimating the angles of squat cracks in three dimensions. Contact mechanics and multi-axial fatigue analysis are combined to study the crack initiation mechanism in rails. Nonlinear material properties, actual...conference paper 2015
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Mooij, J.E. (author), Schön, G. (author), Shnirman, A. (author), Fuse, T. (author), Harmans, C.J.P.M. (author), Rotzinger, H. (author), Verbruggen, A.H. (author)Superconducting nanowires are the dual elements to Josephson junctions, with quantum phase-slip (QPS) processes replacing the tunneling of Cooper pairs. When the QPS amplitude ES is much smaller than the inductive energy EL, the nanowire responds as a superconducting inductor. When the inductive energy is small, the response is capacitive. The...journal article 2015
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Yao, T. (author), Gasparini, A. (author), Denkova, A.G. (author), Warman, J.M. (author)The radiation-induced polymerization and fluorescence intensity of a radio-fluorogenic medium consisting of tertiary-butyl acrylate (TBA) with ca 100 ppm maleimido-pyrene (MPy) display a super-linear dependence on dose and a close to inverse square root dependence on dose rate over the range from 2 to 30 Gy/min. In contrast with the fluorescence...journal article 2015
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Li, Zi Ru (author), Zhang, Guang Ming (author), He, Wei Dong (author), van Terwisga, T.J.C. (author)In this paper, the unsteady cavitation phenomena on a NACA0015 hydrofoil is numerically simulated by unsteady Reynolds-Averaged Navier-Stokes (URANS) method and Large Eddy Simulation (LES) in single-fluid approaches to multiphase modelling, respectively. It is observed that the large-scale structures and characteristic periodic shedding...conference paper 2015
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Holtslag, M.C. (author), Bierbooms, W.A.A.M. (author), Van Bussel, G.J.W. (author)Atmospheric stability strongly influences wind shear and thus has to be considered when performing load calculations for wind turbine design. Numerous methods exist however for obtaining stability in terms of the Obukhov length L as well as for correcting the logarithmic wind profile. It is therefore questioned to what extend the choice of...journal article 2014
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Akay, B. (author), Micallef, D. (author), Simao Ferreira, C.J. (author), Van Bussel, G.J.W. (author)In this study, the effect of the parameters playing a role in the root flow behavior of HAWT are only partly understood. To better reveal the root flow properties, this study presents the progression of HAWT blade root flow at two different blade geometries and at two different tip speed ratios. The effects of the geometry and the tip speed...journal article 2014
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Pereira, R. (author), Van Bussel, G.J.W. (author), Timmer, W.A. (author)The increasing size of Horizontal Axis Wind Turbines and the trend to install wind farms further offshore demand more robust design options. If the pitch system could be eliminated, the availability of Horizontal Axis Wind Turbines should increase. This research investigates the use of active stall control to regulate power production in...journal article 2014
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- Van Heemst, J.W. (author), Baldacchino, D. (author), Mehta, D. (author), Van Bussel, G.J.W. (author) journal article 2014
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Baldacchino, D. (author), Van Bussel, G.J.W. (author)In the present study, a simple inviscid vortex ring (VR) modelling approach is used to represent the developing rotor wake. This allows a straightforward investigation and comparison of the impact of uniform, yawed and sheared flow conditions on the development of the rotor wake, with the additional possibility of including ground effect. The...journal article 2014
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Alblas, L. (author), Bierbooms, W. (author), Veldkamp, D. (author)Atmospheric stability is known to influence wind farm power output, by affecting power losses due to wakes. This research tries to answer what atmospheric stability does to the power production and how conventional simulations using the Jensen wake model compare and can be improved. Data is used from two offshore wind farms, Egmond aan Zee (OWEZ...journal article 2014
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Bernhammer, L.O. (author), Van Kuik, G.A.M. (author), De Breuker, R. (author)During the last decade research on the field of smart rotor has advanced significantly. Fundamental aerodynamics, structural and control concepts have been established and simulators created for distributed flaps on wind turbine blades, which are considered the most promising option. Also a proof of concept has been done under laboratory...journal article 2014
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Roupioz, L.F.S. (author), Jia, L. (author), Nerry, F. (author), Menenti, M. (author)The Qinghai-Tibetan Plateau is characterised by a very strong relief which affects albedo retrieval from satellite data. The objective of this study is to highlight the effects of subpixel topography and to account for those effects when retrieving land surface albedo from geostationary satellite FengYun-2D (FY-2D) data with 1.25km spatial...conference paper 2014
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Haghi, R. (author), Ashuri, T. (author), Van der Valk, P.L.C. (author), Molenaar, D.P. (author)In the current offshore wind turbine support structure design method, the tower and foundation, which form the support structure are designed separately by the turbine and foundation designer. This method yields a suboptimal design and it results in a heavy, overdesigned and expensive support structure. This paper presents an integrated...journal article 2014
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Diepeveen, N.F.B. (author), Jarquin-Laguna, A. (author)In this paper the results are presented of experiments to prove an innovative concept for passive torque control of variable speed wind turbines using fluid power technology. It is demonstrated that by correctly configuring the hydraulic drive train, the wind turbine rotor operates at or near maximum aerodynamic efficiency for below rated wind...journal article 2014
Searched for: mods_originInfo_publisher_s%3A%22IOP%255C+Publishing%22
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