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Clemens, F.H.L.R. (author), Duinmeijer, S.P.A. (author)
Sumps of wastewater pumping station can experience problems due the formation of (solid) floating layers of fat and scum as a result of insufficient current guidelines for sump design with respect to transport of floating debris. To complimentary the guidelines, the use of free-surface vortices is defined as a potential transport mechanism for...
conference paper 2016
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Crielaard, R. (author), van de Kuilen, J.W.G. (author), Terwel, K.C. (author), Ravenshorst, G.J.P. (author), Steenbakkers, P. (author), Breunesse, A. (author)
Cross-laminated timber, or CLT, is receiving attention for its potential use in tall buildings. As a combustible material, one of the challenges for the construction of these buildings is the fire risk that results from its use in the structure. Unprotected CLT can burn along with the fuel load present in a compartment. Irrespective of its fire...
conference paper 2016
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Rothkrantz, L.J.M. (author)
Recent years many universities are involved in development of Massive Open Online Courses (MOOCs). Unfortunately an appropriate didactic model for cooperated network learning is lacking. In this paper we introduce inquiry based learning as didactic model. Students are assumed to ask themselves questions interacting with a learning text. The...
journal article 2015
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Mohangoo, W. (author)
In previous research, batch experiments with an airlift crystallizer on ammonium sulphate, adipic acid and L-ascorbic acid have shown significant reduction of secondary nucleation compared to conventional stirred crystallizers. Furthermore, the crystal size distribution (CSD) achieved by the airlift crystallizer is almost 60% narrower than the...
master thesis 2015
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Drost, L.J. (author)
Interaction of particles in a viscous fluid with a wall and with other particles is often observed in phenomena like sedimentation, erosion and filtration processes. With the increasing computational power there is now the possibility of simulating such particle-laden flows from a micro-scale perspective by direct application of no-slip/no...
master thesis 2015
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Zuiderwijk-van Eijk, A.M.G. (author), Janssen, M.F.W.H.A. (author)
Infrastructures may improve the use of Open Government Data (OGD) by providing insight in how individuals can participate in data reuse and in the quality of open data. Yet, most OGD infrastructures do not support such activities. The objective of this paper is to evaluate the importance and usability of participation mechanisms and data quality...
conference paper 2015
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Dijkers, H.P.A. (author)
Artificially aged aluminium-lithium alloys have recently seen renewed interest in them in the aviation industry. They have a decreased density, while keeping or improving the fatigue properties compared to other aluminium alloys. Research shows that these aluminium-lithium and other advanced aluminium alloys exhibit crack turning and crack....
master thesis 2015
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Pasman, D.J. (author)
Solid round bars with a shoulder fillet are frequently used in engineering structures because it facilitates a smooth transition in thickness. However, the presence of shoulder fillets is currently neglected in the prediction of fatigue crack growth in engineering practice. Since stress concentrating locations like a shoulder fillet can have a...
master thesis 2015
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Van Reekum, R.B. (author)
Pressure locked gratings have many uses, both on land and at sea. This is mainly due to the high degree of flexibility in dimensions and load bearing capacity. Despite the many uses in our surroundings, the term pressure locked grating is unknown to many. This term refers to the way in which the most important connection in pressure locked...
master thesis 2015
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Kroes, P.A. (author)
My aim is to question whether the introduction of new technologies in society may be considered to be genuine experiments. I will argue that they are not, at least not in the sense in which the notion of experiment is being used in the natural and social sciences. If the introduction of a new technology in society is interpreted as an experiment...
journal article 2015
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Bockmann, Eirik (author), Steen, Sverre (author)
journal article 2014
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Lantsoght, E.O.L. (author), Van der Veen, C. (author), Walraven, J.C. (author), De Boer, A. (author)
The combination of increased live loads and a more conservative shear capacity in the recently implemented Eurocodes, resulted in a large number of existing solid slab bridges in the Netherlands being shear-critical upon assessment. However, an enhancement of the shear capacity can occur in slabs under concentrated wheel loads due to transverse...
conference paper 2013
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Van Wijhe, A. (author)
Flue gas from combustion or syngas from gasification can contain fine particles, so called aerosols. These can be potentially harmful for downstream equipment or if emitted to the atmosphere, be inhaled by humans and cause respiratory problems. Standard practice to mitigate this is to use a cyclone which has a low filtration efficiency for sub...
master thesis 2013
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Lantsoght, E.O.L. (author)
The capacity of existing solid slab bridges in the Netherlands is under discussion for two reasons: 1) the increased traffic loads and volumes and 2) the fact that the majority of the existing bridges were built before 1976, and are thus reaching the end of their original life span. Upon assessment according to the governing codes, a large...
doctoral thesis 2013
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Lantsoght, E.O.L. (author), Van der Veen, C. (author), Walraven, J.C. (author)
A large number of existing reinforced concrete slab bridges are found to be insufficient for shear when calculated according to the governing codes. Seeking improved methods, for example, based on new experimental evidence, to assess the residual shear capacity and prolonging their service life can avoid large economic, environmental and social...
conference paper 2013
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Lantsoght, E.O.L. (author), Van der Veen, C. (author), Walraven, J.C. (author)
Existing solid slab bridges under a combination of wheel loads and distributed traffic loads sometimes do not fulfil the code requirements for shear. However, reinforced concrete slabs loaded close to the support are subjected to shear stresses which might result in a failure mode of combined punching and shear. This behaviour is studied in a...
conference paper 2013
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Kooijman, J.D.G. (author)
Bicycle designers traditionally develop bicycles based on experience and trial and error. Adopting modern engineering tools to model bicycle and rider dynamics and control is another method for developing bicycles. This method has the potential to evaluate the complete design space, and thereby develop well handling bicycles for specific user...
doctoral thesis 2012
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Van Eekelen, S.J.M. (author), Bezuijen, A. (author)
In the Netherlands, several field measurements were carried out in piled embankments with a geosynthetic basal reinforcement (GR). This paper presents a series of nineteen 3D model experiments on piled embankments. Purpose of the tests was to find an explanation why the calculated GR strains exceed the GR strains measured in the field. This...
conference paper 2012
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Zhu, Y. (author), Visser, P.J. (author), Vrijling, J.K. (author), Wang, G.Q. (author)
Breaching of embankments has recently drawn more and more attention due to its importance in the development of early warning systems for embankment failures, in the evacuation plans of people at risk, in the design method of embankments based on a risk-approach, etc. The erosion process observed during embankment breaching tests in the...
journal article 2011
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Moore, J.K. (author), Hubbard, M. (author), Schwab, A.L. (author), Kooijman, J.D.G. (author), Peterson, D.L. (author)
An overview of bicycle and rider kinematic motions from a series of experimental treadmill tests is presented. The full kinematics of bicycles and riders were measured with an active motion capture system. Motion across speeds are compared graphically with box and whiskers plots. Trends and ranges in amplitude are shown to characterize the...
journal article 2010
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