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Daulat, Shamsuddin (author), Rokstad, Marius Møller (author), Klein-Paste, Alex (author), Langeveld, J.G. (author), Tscheikner-Gratl, Franz (author)The prosperity of urban life is dependent on its infrastructure. Urban underground infrastructure components (assets) are aging and need regular monitoring, maintenance and rehabilitation. These assets are often placed under pavements and in close vicinity to each other. Managing them in a coordinated way is rational considering costs and...journal article 2022
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van Beek, Janko (author), Teesing, Gwen (author), Oude Munnink, Bas B. (author), Meima, Abraham (author), Vriend, Henrike J. (author), Elzakkers, Jessica (author), de Graaf, Miranda (author), Langeveld, J.G. (author), Medema, G.J. (author)An outbreak of SARS-CoV-2 Alpha variant (Pango lineage B.1.1.7) was detected at a primary school (School X) in Lansingerland, the Netherlands, in December 2020. The outbreak was studied retrospectively, and population-based screening was used to assess the extent of virus circulation and decelerate transmission. Cases were SARS-CoV-2...journal article 2022
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Makris, K. (author), Langeveld, J.G. (author), Clemens-Meyer, François H.L.R. (author), Watts, Joanna (author), Begum, Hasina (author), Horoshenkov, Kirill V. (author)This article explores the potential of vibro-acoustics to detect physical ageing of plastic pipes. For this purpose, two different topics are combined: the ability of vibro-acoustics to estimate the storage modulus of a plastic pipe, and the sensitivity of the estimated storage modulus to changes due to ageing. Concerning the first topic, a...journal article 2023
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van der Werf, J.A. (author), Kapelan, Z. (author), Langeveld, J.G. (author)Model Predictive Control (MPC) of combined sewer systems can reduce environmental degradation caused by uncontrolled overflows. However, practical uncertainties are often neglected when assessing the potential of MPC strategies. This paper aims to understand the risks associated with using a non-perfect internal MPC-model, real precipitation...journal article 2023
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Langeveld, J.G. (author), Schilperoort, Remy (author), Heijnen, Leo (author), Elsinga, Goffe (author), Schapendonk, Claudia E.M. (author), Fanoy, Ewout (author), de Schepper, Evelien I.T. (author), Koopmans, Marion P.G. (author), de Graaf, Miranda (author), Medema, G.J. (author)Over the course of the Corona Virus Disease-19 (COVID-19) pandemic in 2020–2022, monitoring of the severe acute respiratory syndrome coronavirus 2 ribonucleic acid (SARS-CoV-2 RNA) in wastewater has rapidly evolved into a supplementary surveillance instrument for public health. Short term trends (2 weeks) are used as a basis for policy and...journal article 2023
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Stegeman, B. (author), Hoffmann, Rob (author), Hopman, Victor (author), Langeveld, J.G. (author), Clemens-Meyer, Franҫois (author)The main application of the mobile geo-electrical measurement is the detection of the presence and determining the location of leakage in sewer systems. To do so, this method relies on the increase in the measured electrical current between an electrode inside and an electrode outside the sewer system. To use this technique for the...journal article 2022
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Dawass, N. (author), Langeveld, Jilles (author), Ramdin, M. (author), Pérez-Gallent, Elena (author), Villanueva, Angel A. (author), Giling, Erwin J.M. (author), Langerak, Jort (author), van den Broeke, L.J.P. (author), Vlugt, T.J.H. (author), Moultos, O. (author)Recently, deep eutectic solvents (DES) have been considered as possible electrolytes for the electrochemical reduction of CO2 to value-added products such as formic and oxalic acids. The applicability of pure DES as electrolytes is hindered by high viscosities. Mixtures of DES with organic solvents can be a promising way of designing superior...journal article 2022
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Vollaers, Vita (author), Nieuwenhuis, E.M. (author), van de Ven, F.H.M. (author), Langeveld, J.G. (author)Despite being widely implemented, sustainable urban drainage systems (SUDS) do not always function flawlessly. While SUDS have been tested extensively and seem to perform well on a laboratory or pilot scale, practitioners’ experience is different: failures in SUDS occur regularly in practice, resulting in malfunctioning systems, water...journal article 2021
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Internalization of targeted microbubbles by endothelial cells and drug delivery by pores and tunnelsBeekers, Inés (author), Langeveld, Simone A.G. (author), Meijlink, Bram (author), van der Steen, A.F.W. (author), de Jong, N. (author), Verweij, M.D. (author), Kooiman, Klazina (author)Ultrasound insonification of microbubbles can locally enhance drug delivery by increasing the cell membrane permeability. To aid development of a safe and effective therapeutic microbubble, more insight into the microbubble-cell interaction is needed. In this in vitro study we aimed to investigate the initial 3D morphology of the endothelial...journal article 2022
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Lattwein, K.R. (author), Beekers, Inés (author), Kouijzer, Joop J.P. (author), Leon-Grooters, Mariël (author), Langeveld, Simone A.G. (author), van Rooij, Tom (author), van der Steen, A.F.W. (author), de Jong, N. (author), van Wamel, Willem J.B. (author), Kooiman, Klazina (author)Bacteria encased in a biofilm poses significant challenges to successful treatment, since both the immune system and antibiotics are ineffective. Sonobactericide, which uses ultrasound and microbubbles, is a potential new strategy for increasing antimicrobial effectiveness or directly killing bacteria. Several studies suggest that...journal article 2022
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Panasiuk, Oleksandr (author), Hedström, Annelie (author), Langeveld, J.G. (author), Viklander, Maria (author)Infiltration and inflow (I/I) into sanitary sewers causes numerous negative effects on the whole wastewater management system and ultimately, on the receiving waters. Consequently, a number of methods have been developed to analyse the performance of sewer systems with respect to I/I, including: distributed temperature sensing (DTS), closed...journal article 2022
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Izquierdo-Lara, Ray W. (author), Heijnen, Leo (author), Oude Munnink, Bas B. (author), Schapendonk, Claudia M.E. (author), Elsinga, Goffe (author), Langeveld, J.G. (author), Post, Johan (author), Prasad, Divyae K. (author), Medema, G.J. (author)Monitoring of SARS-CoV-2 in wastewater (WW) is a promising tool for epidemiological surveillance, correlating not only viral RNA levels with the infection dynamics within the population, but also to viral diversity. However, the complex mixture of viral lineages in WW samples makes tracking of specific variants or lineages circulating in the...journal article 2023
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van der Werf, J.A. (author), Kapelan, Z. (author), Langeveld, J.G. (author)Urban Drainage Systems can cause ecological and public health issues by releasing untreated contaminated water into the environment. Real-time control (RTC), augmented with rainfall nowcast, can effectively reduce these pollution loads. This research aims to identify key dynamics in the nowcast accuracies and relate those to the performance...journal article 2023
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Langeveld, J.G. (author), Cherqui, Frédéric (author), Tscheikner-Gratl, Franz (author), Muthanna, Tone Merete (author), Juarez, Marina Fernandez Delgado (author), Leitão, Joao P. (author), Roghani, Bardia (author), Kerres, Karsten (author), do Céu Almeida, Maria (author)Urban drainage systems have developed way beyond the traditional piped combined or separate sewer systems. Many ‘new’ systems are being introduced, ranging from stormwater infiltration facilities to green roofs. However, the widely advocated blue-green infrastructures are typically overlooked by asset managers, which will very likely have...journal article 2022
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- Langeveld, C.R. (author) master thesis 2005
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Langeveld, A. (author)Zwembad “De Vosse” is een openluchtzwembad in de gemeente Hillegom. Het bad is geopend in de maanden mei, juni, juli en augustus. Bij mooi weer trekt het jaarlijks meer dan 50.000 bezoekers, aangezien het een van de weinige openluchtbaden in de regio is. Voor de exploitatie is het wellicht gunstiger als het bad gedurende een langere periode...master thesis 2009
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From emergency department to acute medical unit: Optimizing the patient experience journey by designLangeveld, A.T. (author)In the medical world the focus is shifting from a clinical perspective towards a user experience perspective. The Leids University Medical Centre has the vision to put the patient central. Therefore in this project the patient experience was optimized by design within the current Integral Patient Logistics Project at the Acute Medical Unit at...master thesis 2015
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Langeveld, N.D.S. (author)A new family of continued fractions expansions is introduced by combining two existing family's (2-expansions and flipped expansions). This new family has infinitely many mappings with the property that for every x the digits are only even or only odd. Apart from a whole range of examples, convergence is proved and ergodicity is studied. By...master thesis 2015
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Langeveld, J.E. (author)Shale gas is natural gas captured in low permeable shale formations, to be able to produce this gas the permeability of the reservoir needs to be enhanced. Hydraulic fracturing is used in low permeable reservoirs to increase the permeability and make gas production possible. Fracking fluid is pumped in the reservoir at high pressure to create...master thesis 2013
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Langeveld, W. (author)The former leprosarium Westfort in South Africa is a very valuable place, but under pressure because of the poor squatters using the institution grounds as living place and the urban sprawl of Pretoria, reaching the borders of the site. A plan for the current community and the heritage structures is needed to secure its future. My plan is based...master thesis 2016