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- Van Dijk, E. (author) journal article 2010
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Raghunathan, S.B. (author), Van Dijk, T. (author), Peterman, E.J.G. (author), Visser, T.D. (author)In trying to manipulate the intensity distribution of a focused field, one typically uses amplitude or phase masks. Here we explore an approach, namely, varying the state of spatial coherence of the incident field. We experimentally demonstrate that the focusing of a Bessel-correlated beam produces an intensity minimum at the geometric focus...journal article 2010
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He, S.M. (author), Van Dijk, N.H. (author), Paladugu, M. (author), Schut, H. (author), Kohlbrecher, J. (author), Tichelaar, F.D. (author), Van der Zwaag, S. (author)We performed in situ time-resolved small-angle neutron scattering (SANS) measurements on high-purity Fe-Cu and Fe-Cu-B-N alloys during isothermal aging at 550 °C in order to study the potential self-healing of deformation-induced defects by nanosized Cu precipitation. Three different samples with 0%, 8%, and 24% prestrain were used to study the...journal article 2010
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Van Dijk, T. (author)The Jordan Valley was once populated by a people, now almost forgotten by historians, with whom the pharaoh of Egypt sought favour. That is the conclusion reached by Niels Groot, the first researcher to take a PhD at the Delft-Leiden Centre for Archaeology, Art History and Science.journal article 2010
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Van Dijk, T. (author)The railway zone is a marvellous ‘test lab’ for Delft researchers. We look at the work underground and some of the projects, from distinctive station designs to a study of the way the city ‘breathes’.journal article 2010
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De Vet, W.W.J.M. (author), Van Genuchten, C.C.A. (author), Van Loosdrecht, M.C.M. (author), Van Dijk, J.C. (author)In drinking water production, river bank filtration has the advantages of dampening peak concentrations of many dissolved components, substantially removing many micropollutants and removing, virtually completely, the pathogens and suspended solids. The production aquifer is not only fed by the river bank infiltrate but also by water percolating...journal article 2010
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Van Dijk, T. (author), Fischer, D.G. (author), Visser, T.D. (author), Wolf, E. (author)In the analysis of light scattering on a sphere it is implicitly assumed that the incident field is spatially fully coherent. However, under usual circumstances the field is partially coherent. We generalize the partial waves expansion method to this situation and examine the influence of the degree of coherence of the incident field on the...journal article 2010
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Blokker, E.J.M. (author), Vreeburg, J.H.G. (author), Beverloo, H. (author), Klein Arfman, M. (author), Van Dijk, J.C. (author)An “all pipes” hydraulic model of a drinking water distribution system was constructed with two types of demand allocations. One is constructed with the conventional top-down approach, i.e. a demand multiplier pattern from the booster station is allocated to all demand nodes with a correction factor to account for the average water demand on...journal article 2010
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He, S.M. (author), Van Dijk, N.H. (author), Schut, H. (author), Peekstok, E.R. (author), Van der Zwaag, S. (author)We have investigated the influence of deformation-induced defects on the isothermal precipitation at 550?°C in as-quenched (solute-supersaturated) and annealed (solute-depleted) Fe-Cu and Fe-Cu-B-N alloys by positron annihilation spectroscopy and hardness tests. Using the coincidence Doppler broadening technique, the evolution of local...journal article 2010
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Van Dijk, N.P. (author), Yoon, G.H. (author), Van Keulen, F. (author), Langelaar, M. (author)This contribution presents a novel and versatile approach to geometrically nonlinear topology optimization by combining the level-set method with the element connectivity parameterization method or ECP. The combined advantages of both methods open up the possibility to treat a wide range of optimization problems involving complex physical and/or...journal article 2010
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Van der Aa, L.T.J. (author), Rietveld, L.C. (author), Van Dijk, J.C. (author)Four pilot (biological) granular activated carbon ((B)GAC) filters were operated to quantify the effects of ozonation and water temperature on the biodegradation of natural organic matter (NOM) in (B)GAC filters. Removal of dissolved organic carbon (DOC), assimilable organic carbon (AOC) and oxygen and the production of carbon dioxide were taken...journal article 2010
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Sakarya, S. (author), Gubbens, P.C.M. (author), Yaouanc, A. (author), Dalmas de Réotier, P. (author), Andreica, D. (author), Amato, A. (author), Zimmermann, U. (author), Van Dijk, N.H. (author), Brück, E. (author), Huang, Y. (author), Gortenmulder, T. (author)Results of a detailed investigation of the ferromagnetic superconductor UGe2 using positive muon spin rotation and relaxation techniques are presented. The pressure and temperature dependences of the frequencies and related spin-spin relaxation rates show that the transition from the weakly to the strongly polarized magnetic (WP-SP) phases is...journal article 2010
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Blokker, E.J.M. (author), Vreeburg, J.H.G. (author), Beverloo, H. (author), Klein Arfman, M. (author), Van Dijk, J.C. (author)An “all pipes” hydraulic model of a DMA-sized drinking water distribution system was onstructed with two types of demand allocations. One is constructed with the conventional op-down approach, i.e. a demand multiplier pattern from the booster station is llocated to all demand nodes with a correction factor to account for the average water emand...journal article 2010
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- Van Dijk, T. (author) journal article 2009
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De Vet, W.W.J.M. (author), Van Genuchten, C.C.A. (author), Van Loosdrecht, M.C.M. (author), Van Dijk, J.C. (author)In drinking water production, river bank filtration has the advantages of dampening peak concentrations of many dissolved components, substantially removing many micropollutants and removing, virtually completely, the pathogens and suspended solids. The production aquifer is not only fed by the river bank infiltrate but also by water percolating...journal article 2009
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Li, S. (author), Heijman, S.G.J. (author), Verberk, J.Q.J.C. (author), Van Dijk, J.C. (author)A new treatment concept for drinking water production from surface water has been investigated on a pilot scale. The treatment concept consists of fluidized ion exchange (FIEX), ultrafiltration (UF), nanofiltration (NF), and granular activated carbon filtration (GAC). The FIEX process removed calcium and other divalent cations; the UF membrane...journal article 2009
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Tuijthoff, G.J.M. (author), Van Sterkenburg, M.N. (author), Sierevelt, I.N. (author), Van Oldenrijk, J. (author), Van Dijk, C.N. (author), Kerkhoffs, G.M.M.J. (author)The demand for high quality care is in contrast to reduced training time for residents to develop arthroscopic skills. Thereto, simulators are introduced to train skills away from the operating room. In our clinic, a physical simulation environment to Practice Arthroscopic Surgical Skills for Perfect Operative Real-life Treatment (PASSPORT) is...journal article 2009
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Van Halem, D. (author), Bakker, S.A. (author), Amy, G.L. (author), Van Dijk, J.C. (author)For more than a decade it has been known that shallow tube wells in Bangladesh are frequently contaminated with arsenic concentrations at a level that is harmful to human health. By now it is clear that a disaster of an unheard magnitude is going on: the World Health Organization has estimated that long-term exposure to arsenic in groundwater,...journal article 2009
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Smeets, P.W.M.H. (author), Medema, G.J. (author), Van Dijk, J.C. (author)The Netherlands is one of the few countries where chlorine is not used at all, neither for primary disinfection nor to maintain a residual disinfectant in the distribution network. The Dutch approach that allows production and distribution of drinking water without the use of chlorine while not compromising microbial safety at the tap, can be...journal article 2009
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Van Dijk, T. (author), Schouten, H.F. (author), Visser, T.D. (author)We analyze the coherence singularities that occur in the far field that is generated by a broad class of partially coherent sources. It is shown that for rotationally symmetric planar quasihomogeneous sources the coherence singularities form a two-dimensional surface in a reduced three-dimensional space. We illustrate our results by studying the...journal article 2009