When observing star-forming galaxies, we are not only seeing stellar light, but we also see how this interacts with galactic gas and dust. This thesis contains studies of the stellar, nebular and dust properties of low mass star-forming galaxies.

Supervisor: P.J.J. Hooykaas

Promotor: Prof.dr. H.J.A. Rottgering

Promotor: E. F. van Dishoeck, Co-promotor: C. Walsh

Promotor: G.P. van Wezel, Co-promotor: D. Claessen

Sustainable energy from wind and solar is most readily available near the sea.

Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

Understanding the formation and evolution of planetary systems is one of the most fundamental challenges in astronomy. To directly image and study young exoplanets and the circumstellar disks they form from, dedicated high-contrast imaging instruments are built.

The name ‘Jambi flora’ refers to fossil plants found as part of a rock formation from the Early Permian (296 million years old), located in the Jambi Province of Sumatra, Indonesia.

In this thesis we investigate cosmology and the large scale structure of the Universe using cosmological simulations.

Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L. Kaper (UvA)

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

During embryonic growth, cells proliferate, differentiate, and collectively migrate to form different tissues at the right position and time in the body.

Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.

Despite the fact that gold nanoparticles (GNPs) are one of the most studied nanoparticles, there is still a necessity for new approaches allowing for effective protective coating to enable wider use of GNPs in biomedical applications.

Nucleoid associated proteins maintain the architecture of the bacterial chromosome and regulate gene expression, hinting that their role as transcription factors may involve local three-dimensional chromosome re-modelling.

Agrobacterium tumefaciens, a gram-negative plant pathogen belonging to the family Rhizobiaceae, is the causative agent of crown gall disease, which can affect many plant species including agronomically important ones.

Materials with strongly correlated electrons show some of the most mysterious and exotic phases of quantum matter, such as unconventional superconductivity, quantum criticality and strange metal phase.

The AT-Hook Nuclear Localized 15 (AHL15) gene belongs to a plant-specific gene family of DNA-binding proteins. Overexpression of AHL15 in Arabidopsis thaliana delays developmental phase transitions whereas its loss of function causes a slight acceleration.

The plant hormone auxin plays a central role in the growth and development of plants. Auxin acts in a concentration dependent manner and polar cell-to-cell transport of this hormone determines its distribution in the tissues of plants. This polar auxin transport is mediated by several families of auxin…

According to the amyloid cascade hypothesis, accumulation of beta-amyloid (Aβ) peptides initiates the pathological cascade in Alzheimer's disease (AD).

This work describes several studies into the electroreduction of carbon dioxide (CO2RR), both regarding mechanistical aspects and catalyst stability considerations. Mechanistic insights into carbon-carbon bond formation on a silver catalyst are described in Ch 2, were we find an acetaldehyde-like surface…

The genetic information of all living organisms is contained in their DNA. Cells modify the degree of DNA compaction by epigenetics, which largely determines what genes are read out and which genes are transcriptionally silent.

Particles are omnipresent in biopharmaceutical products. In protein-based therapeutics such particles are generally associated with impurities, either derived from the drug product itself (e.g. protein aggregates), or from extrinsic contaminations (e.g. cellulose fibers).

My PhD project studies how the temporally sequential Hox gene expression is regulated during head-tail patterning of the frog embryo.

This thesis investigates reactive interfaces in surface science across three domains: heterogeneous catalysis, environmental nanoplastics, and two-dimensional materials.

Hoe meer we leren over een (neuro-)psychologische of lichamelijke aandoening en de hieraan gerelateerde gedragsfactoren, hoe beter we deze niet alleen kunnen signaleren, maar ook behandelen. Het is dus belangrijk dat recente inzichten over (neuro-)psychologische problemen en daaraan gerelateerde gedragsfactoren…

In de Faculteit der Sociale Wetenschappen is de verwevenheid van onderzoek, onderwijs en impact vanzelfsprekend.

Promotie

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

Promotor: A.H. Meijer, Co-promotor: B.E. Snaar-Jagalska

In this thesis, the discovery and optimization is described of chemical tools to study the N-acylethanolamine (NAE) biosynthetic pathway.

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

This PhD-thesis analyses the relationship between the parties’ choices in the CPB Netherlands Bureau for Economic Policy Analysis’ assessments of the election manifestos and coalition agreements over the period 1986-2017, and tries to explain this relationship.

Promotores: Prof.dr. J. Zaanen, Prof.dr. K.E. Schalm

In this thesis, we used genetically engineered mouse models and a variety of cell-culture based assays to identify genes and pathways that are involved in the development and treatment of invasive lobular carcinoma (ILC).

Promotor: P. T. de Zeeuw, Co-promotor: N. Neumayer; G. van de Ven

Metal-based prodrugs based on ruthenium(II) polypyridyl complexes have proven to be very suitable for application in both photodynamic therapy (PDT) and photo-activated chemotherapy (PACT).

Cholesterol influences many pathways, including serving as precursor for adrenal steroidogenesis. Imbalance of cholesterol levels has been implicated in several diseases including cardiovascular diseases and its underlying pathology, atherosclerosis.

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.

Promotor: F.J. van Lunteren, E. Jorin

NASA’s telescoop SOFIA geeft een nieuw kijkje in de chemie nabij jonge sterren: de geboorteplaats van nieuwe planeten. De Leidse promovendus Andrew Barr schrijft erover in de Astrophysical Journal. Hij en zijn collega’s vonden enorme hoeveelheden water en organische moleculen in de wervelende, schijfvormige…

Het vertrekpunt van dit onderzoek is de bevinding dat het menselijk brein vatbaar is voor allerlei denkfouten en vooringenomenheden (biases), die onze percepties kleuren en onze redenaties beïnvloeden, zonder dat we dit bewust doorhebben. Integendeel, mensen hebben veelal het gevoel dat zij slechts…

Lezing, Kaiser Lente Lezing

Maak je plannen voor een masteropleiding Psychologie? Beschik je over een verwante, afgeronde Nederlandse hbo- of wo-bacheloropleiding? Dan kán het eenjarige premasterprogramma Psychologie iets voor jou zijn.

Het begrijpen van de wereld om ons heen hangt af van het vermogen om de wereld te ontleden in verschillende objecten en deze in hun geheugen op te slaan. Dit proces wordt gedefinieerd als object individuatie. Onderzoek wijst uit dat dit voor baby’s niet altijd gemakkelijk is.

Actuele vraagstukken uit zowel Nederland als de internationale gemeenschap, zetten we in om de nieuwsgierigheid van studenten en onderzoekers te prikkelen.

Met ingang van 1 november 2025 is universitair hoofddocent Ethics and Digital Technologies Francien Dechesne benoemd tot bijzonder hoogleraar ‘Data and AI for the Rule of Law’ aan de Tilburg School of Humanities and Digital Sciences van Tilburg University.

Postdoc en taalwetenschapper Evelyn Bosma ontvangt voor haar proefschrift de Keetje Hodshonprijs. Voor haar onderzoek over meertaligheid van Friese kinderen won Bosma eerder al de Klokhuis Wetenschapsprijs en de Wetenschapsprijs Campus Fryslân.

Religion, Philosophy, and the Pre-modern World