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Laying the experimental foundation for corrosion inhibitor discovery through machine learning

Özkan, C. (author), Sahlmann, Lisa (author), Feiler, Christian (author), Zheludkevich, Mikhail (author), Lamaka, Sviatlana (author), Sewlikar, Parth (author), Kooijman, A.M. (author), Taheri, P. (author), Mol, J.M.C. (author)

Creating durable, eco-friendly coatings for long-term corrosion protection requires innovative strategies to streamline design and development processes, conserve resources, and decrease maintenance costs. In this pursuit, machine learning emerges as a promising catalyst, despite the challenges presented by the scarcity of high-quality...

journal article 2024

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LDH conversion films for active protection of AZ31 Mg alloy

Pillado, B. (author), Mingo, B. (author), del Olmo, R. (author), Matykina, E. (author), Kooijman, A.M. (author), Gonzalez Garcia, Y. (author), Arrabal, R. (author), Mohedano, M. (author)

Zinc aluminium (Zn-Al) and lithium aluminium (Li-Al) – layered double hydroxides (LDH) coatings with incorporated inhibitors (Li−, Mo− and W−based) were successfully synthesized on AZ31 Mg alloy. Zn−Al LDH W and Li−Al LDH Li showed the highest corrosion resistance and were selected for further evaluation. SEM cross−section examination...

journal article 2023

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Vacuum Deposited Perovskites with a Controllable Crystal Orientation

Yan, J. (author), Stickel, L.S. (author), van den Hengel, L. (author), Wang, H. (author), Ravi Anusuyadevi, P. (author), Kooijman, A.M. (author), Liu, X. (author), Ibrahim, B. (author), Mol, J.M.C. (author), Taheri, P. (author), Mazzarella, L. (author), Isabella, O. (author), Savenije, T.J. (author)

The preferential orientation of the perovskite (PVK) is typically accomplished by manipulation of the mixed cation/halide composition of the solution used for wet processing. However, for PVKs grown by thermal evaporation, this has been rarely addressed. It is unclear how variation in crystal orientation affects the optoelectronic properties of...

journal article 2023

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Multifunctional ZrB₂-rich Zr_1-xCr_xB_y thin films with enhanced mechanical, oxidation, and corrosion properties

Bakhit, Babak (author), Dorri, Samira (author), Kooijman, A.M. (author), Wu, Zhengtao (author), Lu, Jun (author), Rosen, Johanna (author), Mol, J.M.C. (author), Hultman, Lars (author), Petrov, Ivan (author), Greene, J. E. (author), Greczynski, Grzegorz (author)

Refractory transition-metal (TM) diborides have high melting points, excellent hardness, and good chemical stability. However, these properties are not sufficient for applications involving extreme environments that require high mechanical strength as well as oxidation and corrosion resistance. Here, we study the effect of Cr addition on the...

journal article 2021

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Local changes in the microstructure, mechanical and electrochemical properties of friction stir welded joints from aluminium of varying grain size

Orłowska, Marta (author), Pixner, Florian (author), Hütter, Andreas (author), Kooijman, A.M. (author), Jasiński, Cezary (author), Gonzalez Garcia, Y. (author), Enzinger, Norbert (author), Lewandowska, Małgorzata (author)

The present study shows results of friction stir welded (FSW) samples after different plastic deformation routes. The welds were made of coarse-grained and ultrafine-grained commercially pure aluminium. As a plastic deformation method a new hybrid process has been chosen, which resulted in obtaining samples with different characteristics of...

journal article 2021

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The power of stories: A framework to orchestrate reflection in urban storytelling to form stronger communities

Slingerland, G. (author), Kooijman, Julia (author), Lukosch, Stephan (author), Comes, M. (author), Brazier, F.M. (author)

This paper focuses on the particular power of storytelling to foster reflection and connections between people in urban life. In fact, the core principles and mechanisms for public storytelling to achieve this have yet to be made explicit. This gap is addressed by introducing a novel reflective storytelling framework that unveils the underlying...

journal article 2021

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Prototyping in social VR: Anticipate the unanticipated outcomes of interactions between AI-powered solutions and users.

Mariani, Elena (author), Kooijman, F.S.C. (author), Shah, P. (author), Stoimenova, N. (author)

Interactions of users with AI powered solutions (AIPS) have the potential to affect collective behaviours and amplify unanticipated outcomes. Product developers, organisations, and companies are increasingly being expected to take responsibility for the unanticipated outcomes of their products. In this paper we explore a proactive approach to...

journal article 2021

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I See Your Gesture: A VR-Based Study of Bidirectional Communication between Pedestrians and Automated Vehicles

Epke, Michael R. (author), Kooijman, L. (author), de Winter, J.C.F. (author)

Automated vehicles (AVs) are able to detect pedestrians reliably but still have difficulty in predicting pedestrians' intentions from their implicit body language. This study examined the effects of using explicit hand gestures and receptive external human-machine interfaces (eHMIs) in the interaction between pedestrians and AVs. Twenty-six...

journal article 2021

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Replicating five pupillometry studies of Eckhard Hess

de Winter, J.C.F. (author), Petermeijer, S.M. (author), Kooijman, L. (author), Dodou, D. (author)

Several papers by Eckhard Hess from the 1960s and 1970s report that the pupils dilate or constrict according to the interest value, arousing content, or mental demands of visual stimuli. However, Hess mostly used small sample sizes and undocumented luminance control. In a first experiment (N = 182) and a second preregistered experiment (N =...

journal article 2021

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How should external human-machine interfaces behave? Examining the effects of colour, position, message, activation distance, vehicle yielding, and visual distraction among 1,434 participants

Bazilinskyy, P. (author), Kooijman, L. (author), Dodou, D. (author), de Winter, J.C.F. (author)

External human-machine interfaces (eHMIs) may be useful for communicating the intention of an automated vehicle (AV) to a pedestrian, but it is unclear which eHMI design is most effective. In a crowdsourced experiment, we examined the effects of (1) colour (red, green, cyan), (2) position (roof, bumper, windshield), (3) message (WALK, DON'T...

journal article 2021

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External human-machine interfaces: Effects of message perspective

Eisma, Y.B. (author), Reiff, A. (author), Kooijman, L. (author), Dodou, D. (author), de Winter, J.C.F. (author)

Future automated vehicles may be equipped with external Human-Machine Interfaces (eHMIs). Currently, little is known about the effect of the perspective of the eHMI message on crossing decisions of pedestrians. We performed an experiment to examine the effects of images depicting eHMI messages of different perspectives (egocentric from the...

journal article 2021

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Is accommodation a confounder in pupillometry research?

Kooijman, L. (author), Dodou, D. (author), Jansen, S. T. (author), Themans, T. S. (author), Russell, J. N.M. (author), Petermeijer, S.M. (author), Doorman, J. R.C. (author), Hablé, J. H. (author), Neubert, D. S. (author), Vos, M. J.C. (author), de Winter, J.C.F. (author)

Much psychological research uses pupil diameter measurements to investigate the cognitive and emotional effects of visual stimuli. A potential problem is that accommodating at a nearby point causes the pupil to constrict. This study examined to what extent accommodation is a confounder in pupillometry research. Participants solved...

journal article 2021

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Perspectives of coagulation/flocculation for the removal of pharmaceuticals from domestic wastewater: A critical view at experimental procedures

Kooijman, G. (author), de Kreuk, M.K. (author), Houtman, C. (author), van Lier, J.B. (author)

Literature frequently reports that colloids in aqueous matrices sorb a large fraction of pharmaceuticals. Since coagulation/flocculation removes colloids, it is expected that coagulation/flocculation in principle should be useful in concentrating pharmaceuticals in wastewater treatment, which would facilitate the treatment of these refractory...

journal article 2020

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Real-time in-situ rheological assessment of sticky point temperature and humidity of powdered products

Groen, Johan C. (author), Kooijman, Wim (author), van Belzen, Djamilla (author), Meesters, G.M.H. (author), Schütz, Denis (author), Aschl, Timothy (author), Verolme, Patrick (author)

Unwanted changes in powder flow behavior can unexpectedly occur when a product is exposed to certain conditions of temperature and humidity. This can happen during production, but also during transport or storage. The work reported here demonstrates the novel approach of using an amended powder rheology set-up for measuring and predicting...

journal article 2020

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Molybdate as corrosion inhibitor for hot dip galvanised steel scribed to the substrate: A study based on global and localised electrochemical approaches

Coelho, L. B. (author), Fava, E. B. (author), Kooijman, A.M. (author), Gonzalez Garcia, Y. (author), Olivier, M. G. (author)

The effect of sodium molybdate in inhibiting galvanic corrosion of Zn coating and mild steel is addressed. The inhibitor's performance was appraised by Zero Resistance Ammeter on HDG/mild steel galvanic coupling model in 0.05 M NaCl (+5 mM Na₂MoO₄) media. The effectiveness of Na₂MoO₄ was evaluated...

journal article 2020

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How Do eHMIs Affect Pedestrians’ Crossing Behavior? A Study Using a Head-Mounted Display Combined with a Motion Suit

Kooijman, L. (author), Happee, R. (author), de Winter, J.C.F. (author)

In future traffic, automated vehicles may be equipped with external human-machine interfaces (eHMIs) that can communicate with pedestrians. Previous research suggests that, during first encounters, pedestrians regard text-based eHMIs as clearer than light-based eHMIs. However, in much of the previous research, pedestrians were asked to imagine...

journal article 2019

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Hydrometallurgical recovery of rare earth elements from mine tailings and WEEE

Peelman, S. (author), Kooijman, D. (author), Sietsma, J. (author), Yang, Y. (author)

The present study proposes three distinct processes to recycle rare earth elements (REE) from two low-grade secondary resources: REE-containing mine tailings and ferrous scrap from shredded waste of electrical and electronic equipment (WEEE). The first developed process extracts both REE and phosphorus from the apatite mineral contained within...

journal article 2018

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Impact of coagulant and flocculant addition to an anaerobic dynamic membrane bioreactor (AnDMBR) treating waste-activated sludge

Kooijman, G. (author), Lopes, Wilton (author), Zhou, Z. (author), Guo, H. (author), de Kreuk, M.K. (author), Spanjers, H. (author), van Lier, J.B. (author)

In this work, we investigated the effects of flocculation aid (FA) addition to an anaerobic dynamic membrane bioreactor (AnDMBR) (7 L, 35°C) treating waste-activated sludge (WAS). The experiment consisted of three distinct periods. In period 1 (day 1–86), the reactor was operated as a conventional anaerobic digester with a solids retention...

journal article 2017

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Levendige winkelgebieden in balans

van der Wal, Leon (author), Kooijman, D.C. (author), Remøy, H.T. (author)

De winkelleegstand in Nederland is de afgelopen jaren toegenomen. Er bestaan echter grote verschillen tussen en binnen winkelgebieden. Waar straten in de meeste winkelgebieden nog prima functioneren, hebben andere straten hun relevantie totaal verloren. Specifieke gebieds- en gebouwkenmerken vormen een verklaring voor deze verschillen. Dit...

journal article 2016

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Warenhuizen in de problemen: De kreupele paradepaardjes van de detailhandel

Kooijman, D.C. (author)

Het gaat niet goed met de warenhuizen. De recente krantenberichten over Vroom & Dreesman laten dat duidelijk zien. Wat is het historisch belang van warenhuizen? En: hoe heeft het zover kunnen komen? De ontwikkeling van de afgelopen honderd jaar toont waarom we zoveel waarde hechtten aan warenhuizen en waarom dat is veranderd.

journal article 2015