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Tukker, A.A. (author)Indirect Heat Induced Attachment and Detachment (HIAD) is a promising concept for gripping delicate tissues in ophthalmic surgery. However, the optimal settings of attaching to and detaching from delicate tissues are unknown. This study presents the effects of the instrument heating properties and initial contact force on the adhesion force,...master thesis 2010
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Kerstens, N.F.H. (author)The purpose of this work is to investigate the factors influencing the resistance upset butt welding process to obtain an understanding of the metal behaviour and welding process characteristics, so that new automotive steels can be welded with reduced development time and fewer failures in production. In principle the welding process is rather...doctoral thesis 2010
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Van den Heuvel, B.R. (author)Climate change is characterised by a global increase in temperature and by the increase in the number of extreme weather events like; heatwaves, extreme droughts, and heavy rainfall. Ur-banisation can be seen as a climate problem, for example because of the lack of water storage in cities during times of drought and the lack of drainage during...master thesis 2009
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Kenjeres, S. (author)We conducted a large eddy simulation (LES) of a locally applied electromagnetic control of turbulent thermal convection of an electrically conductive fluid (electrolyte solution) inside of a slender enclosure. Generic configurations, consisting of two or three magnets of opposite polarities located below the lower wall, and two oppositely...journal article 2009
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Saeid, S. (author), Barends, F.B.J. (author)One of the crucial topics in this century is sustainable energy. Since the sources of fossil fuels are limited and are going to be exhausted, there is a need to look for sustainable renewable energy. In this respect, the exploitation of geothermal energy from deep hot aquifers becomes opportune. Hence, insight is required in the heat balance of...conference paper 2009
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Rops, C.M. (author)New production techniques, which became available since the 1980’s, allowed the mass production of small sized fluidic systems. Reducing the size of a technical system alters the performance due to scaling effects. Physical phenomena which operate on volumes, such as gravity and inertia, become less important with respect to physical phenomena...doctoral thesis 2009
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Kuhn, S. (author), Kenjeres, S. (author), Von Rohr, P.R. (author)In this numerical study the mixed convective flow of water over a heated wavy surface over a range of Reynolds and Richardson numbers, including transitional and turbulent flow regimes (20 ? Re ? 2000 and 0.5 ? Ri ? 5000) is investigated. A dynamic Large Eddy Simulation (LES) approach is applied where the thermal buoyancy effects are represented...journal article 2009
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Van Beekum, D. (author)The development of district heating networks in urban areas descibes an approach to achieve the goals and targets for energy saving, reduction of CO2-emissions and sustainbale energy that are stated by the government. For the development of district heating networks energy conversion systems are used of generating heat and networks are used to...master thesis 2009
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Kleerekoper, L. (author)The Urban Heat Island (UHI) effect assumes that cities accumulate heat and are consequently warmer than their peripheries. During the evening and at night, when the countryside has cooled down and the city retains the heat accumulated during the day, the difference is at its maximum. Global climate change brings a temperature rise in the...master thesis 2009
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La Spina, L. (author)Nowadays, electrothermal effects (ET) are posing fundamental issues in nearly all branches of micro- and nano-electronics. Due to either a high power dissipation level or to the aggressive electrical isolation schemes adopted to increase the speed, both high and low power devices are affected by ET effects that limit their reliability and cause...doctoral thesis 2009
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Son Tran, T. (author)Carbonated water flooding (CWF) is an enhanced oil recovery method where an oil reservoir is flooded with water containing dissolved CO2. The CO2 is then transferred into the oil phase leading to the swelling of the oil and to the reduction of its viscosity. This method was proven by several field trials but did not reach the status of a routine...master thesis 2009
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Salcedo Rahola, T.B. (author), Van Oppen, P. (author), Mulder, K. (author)This report gives an overview of heat stress problems in urban areas of the Netherlands and various options for mitigating this stress. Climate change is causing more occurrences of heat waves. Urban areas in particular will suffer the most, as they are warmer than the countryside. * What is known about the magnitude of heat stress in Dutch...report 2009
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Eijt, S.W.H. (author), Kind, R. (author), Singh, S. (author), Schut, H. (author), Legerstee, W.J. (author), Hendrikx, R.W.A. (author), Svetchnikov, V.L. (author), Westerwaal, R.J. (author), Dam, B. (author)We report positron depth-profiling studies on the hydrogen sorption behavior and phase evolution of Mg-based thin films. We show that the main changes in the depth profiles resulting from the hydrogenation to the respective metal hydrides are related to a clear broadening in the observed electron momentum densities in both Mg and Mg2Ni films....journal article 2009
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Sidorkin, V. (author), Van der Drift, E.W.J.M. (author), Salemink, H. (author)Performance of hydrogen silsesquioxane (HSQ) resist material with respect to the temperature during electron beam exposure was investigated. Electron beam exposure at elevated temperatures up to 90?°C shows sensitivity rise and slight contrast (?) degradation compared to lower temperature cases. Ultrahigh resolution structures formed at elevated...journal article 2008
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Alderliesten, M. (author)Mean particle diameters are important for the science of particulate systems. This thesis deals with a definition system for these mean diameters, called Moment-Ratio (M-R) definition system, and provides a general statistical and physical basis. Also, the current DIN/ISO definition system is discussed. Many types of mean diameters defined...doctoral thesis 2008
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Johannessen, E. (author), Gross, J. (author), Bedeaux, D. (author)A vapor-liquid interface introduces resistivities for mass and heat transfer. These resistivities have recently been determined from molecular simulations, as well as theoretically using the van der Waals square gradient model. This model, however, does not allow for direct quantitative comparison to experiment or results from molecular...journal article 2008
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Sagkol, H. (author), Rejaei, B. (author), Burghartz, J.N. (author)An experimental study of the self-heating of micromachined spiral inductors operated under high-power conditions is presented. Typical suspended spiral coils are shown to develop highly elevated temperatures (up to several hundred degrees) under the flow of a moderate to high (> 60 mA) dc current, which often applies to inductors in radio...journal article 2008
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Van Dorp, W.F. (author), Hagen, C.W. (author)An extensive review is given of the results from literature on electron beam induced deposition. Electron beam induced deposition is a complex process, where many and often mutually dependent factors are involved. The process has been studied by many over many years in many different experimental setups, so it is not surprising that there is a...journal article 2008
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De Kruif, J. (author)In recent years a trend towards more comfortable beds and mattresses has been developed. Water-filled warming mattresses have proofed to increase the comfort of beds. With the climate change, the number of nights with high temperatures during the summer is increasing. SBI has proposed to develop a water-circulated heating / cooling mattress to...master thesis 2008
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Wagner, K.E. (author), Morosan, E. (author), Hor, Y.S. (author), Tao, J. (author), Zhu, Y. (author), Sanders, T. (author), McQueen, T.M. (author), Zandbergen, H.W. (author), Williams, A.J. (author), West, D.V. (author), Cava, R.J. (author)We report the characterization of layered 2H-type CuxTaS2 for 0?x?0.12. The charge density wave (CDW), at 70 K for TaS2, is destabilized with Cu doping. The sub-1 K superconducting transition in undoped 2H-TaS2 jumps quickly to 2.5 K at low x, increases to 4.5 K at the optimal composition Cu0.04TaS2, and then decreases at higher x. The...journal article 2008