The local ordering of atoms at the surface of a metallic particle determines its catalytic activity and selectivity. As energy systems of the future will be based on efficient catalytic conversion of small molecules in closed cycles, we study how structural effects of catalysts can be used to our ad…

Heterogeneous catalysis is essential to many industrial applications. These catalysts are often comprised of supported nanoparticles, which contain various different surface sites.

Promotor: Prof.dr. G.J. Kroes

PhD Defence

Unfolding potential

In the thesis the dynamics of strategies is studied from two perspectives.In the first part of the thesis strategies are considered to be opinions present in a community.

Chemical reactions go hand-in-hand with an energy exchange with the environment in which they take place. Surfaces offer a variety of energy dissipation channels, constituted by the nuclear and electronic degrees of freedom of the atoms at the interface. Aiming at an improved future harvesting of energy,…

Chemical reactions go hand-in-hand with an energy exchange with the environment in which they take place. Surfaces offer a variety of energy dissipation channels, constituted by the nuclear and electronic degrees of freedom of the atoms at the interface. Aiming at an improved future harvesting of energy,…

In this thesis, dynamic testing principles were applied to examine young children's potential for learning. Our studies focused on the role of cognitive flexibility, to further increase our understanding of the cognitive processes involved in children's ability to learn from instruction and feedback,…

An assessment approach that tailors to children’s instructional needs

Can dynamic testing provide us with insight in children’s potential for learning?

The dissociation of CH4 into CH3 + H on a metal surface is the rate determining step in processes which produce hydrogen, such as steam reforming and catalytic partial oxidation. Ultimately, we want to study the dissociation of methane on Ni(111) and Pt(111) quantum mechanically while taking into account…

BlaC is the β-lactamase of Mycobacterium tuberculosis. We show that it can recover from inhibition by clavulanic acid and that phosphate helps it do so.

Promotor: Prof.dr. S.F. Portegies Zwart, Co-promotor: D.C. Heggie

The research of our group is centered around dynamical systems, functional analysis and their interplay.

If gifted children are experts in using strategies, why do they experience problems with learning? Why do they underachieve?

Dynamic nuclear polarization with paramagnetic agents can enhance nuclear magnetic resonance signals by orders of magnitude. The mechanism of enhancement depends a.o. on the magnetic resonance properties of the agents used. Electron spin relaxation times at NMR relevant magnetic field/microwave frequencies,…

The research of this programme is centered around dynamical systems, functional analysis, and their interplay.

Actin Polymerization and Membrane Physics in Living Cells: Analysis of cell spreading mechanisms

Promotor: W.Th.F. den Hollander

Promotor: Prof.dr. W.Th.F. den Hollander, Co-promotor: R. Fernandez

Promotor: J.W. van Holten

What is the relationship between outcomes of dynamic testing and cognitive flexibility in young children?

Promotor: Huub de Groot, Co-promotor: Francesco Buda

John van Noort

The genomic DNA of every organism is organized and compacted in order to fit inside the cell. This is achieved by the joint action of numerous architectural proteins that aid in folding the genome. Genome folding is tightly interconnected with transcription, with genes in certain regions being silenced,…

Does a moving hybrid zone leave a genomic footprint?

Promotor: H.J. van den Herik, B.R. Katzy, Co-promotor: K. Sailer

Cell adhesion signaling

Making a dynamic substance stock model in order to conduct scenario analyses and make forecasts.

Promotor: S.M. Verduyn Lunel, Co-promotoren: M.F.E. de Jeu, S.D. Silvestrov

What is the optimal investment policy according to which a firm adapts its capacity in a competitive market?

In the early universe, the dynamics of the Higgs field can give rise to many interesting phenomena.

This research group is interested in the physics of living cells, especially their cytoskeleton dynamics under defined external stimuli.

Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.

Developing methodes to understand the evolution of patches in natural ecosystems

Schemas are knowledge structures that allow us to make efficient judgments about the world without the cost of memorizing every detail of previous experiences. It has long been known that schemas can enhance long-term memory for related information.

When a star gets too close to a supermassive black hole, it is torn apart by strong tidal forces in a tidal disruption event (TDE).

Throughout all domains of life, from bacteria and archaea to eukaryotes, genomes adopt well-organized three-dimensional structures that can change in space and time to accommodate preferred transcriptional programs for environmental adaptation, the maintenance of cellular identity and differentiation…

Hybrid zones occur where two species meet and produce offspring (hybrids). Typically, hybrids show a considerable reduction in fitness. In this thesis two hybrid zones are treated.

This functional genomics project aims at understanding the biology of the underlying mycelium differentiation and autolysis processes in much more detail.

Science, Institute of Environmental Sciences (CML)

This dissertation shows that dialogical logic constitutes a powerful and flexible general framework for the development and study of various logical formalisms and combinations thereof.

Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans

What are the principles of genome folding and dynamics in bacteria?

Promotor: Prof.dr. T. Schmidt, Co-Promotor: Dr. ir. S.J.T. van Noort

Promotores: Prof.dr. T.H.W. Bäck, Prof.dr. M. Bongards (Cologne University)

The solar system was formed approximately 4.56 billion years ago. Despite the numerous theories that have been developed over the years, the formation and evolution of the solar system still remain unclear.

Due to their central physiological roles in living organisms, retaining beta-glycosidases have been the subject of tremendous research efforts to examine their structure/function relation using numerous biophysical and biochemical approaches.