Songbirds as vocal learners learn their songs and song preference from social tutors⁠. Tutor choice for both song and preference learning are important to characterize for understanding individual learning performance and cultural transmission of song⁠.

This thesis consists of two subjects, that are both a consequence of radiation pressure.

Do sustainability values play a role in motivating people to act for biodiversity in successful projects and in successful leadership action? And how could these values be incorporated in current economic valuation methods?

In astronomy, the interpration of observations and measurements plays a crucial role: we rely purely and fundamentally on the information that reaches us as observers. And 80% of all matter in the universe is undetectable directly.

Software development is a complex process. It is important that software products become stable and maintainable assets.

Promotor: W.T. de Groot

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.

Corruption, integrity (or a lack thereof…) and public values are near omnipresent elements in public administration and politics of all times. Cases of corrupt public officials and politicians continuously emerge. Strangely enough, however, it often remains unknown what actually occurred, how something…

Does the presence of Ring-necked parakeets negatively influence feeding and feeding behaviour of native bird species on artificial bird feeders and if so, what are possible solutions?

Kunst en vrije tijd, Kunst en vrije tijd

Streptomyces bacteria are a valuable source of natural products, many of which are used in the clinic or in biotechnology.

The lipids in the uppermost layer of the skin, the stratum corneum (SC), play an important role in the skin barrier function. The three main SC lipid classes are ceramides (CER), cholesterol and free fatty acids.

Promotor: J. Schaye

In this thesis, we aim to shed light on the diverse and often opposing roles of integrin α3β1 in cancer.

In this Ph.D. thesis we study the interaction of low energy electrons with thin materials, namely layered materials (graphene, hexagonal boron nitride, molybdenum disulfide) and organic films. At these low energies the quantum mechanical wavelength of the electron wave function is in the order of a…

In this thesis we investigated the ability of two-photon multifocal microscopy for single-molecule microscopy in live cells and organisms.

Promotor: Prof.dr. P.G.L. Klinkhamer, Co-Promotor: T.J. de Jong

Atherosclerosis is the main underlying pathology of cardiovascular disease. Atherosclerosis is caused by an immune response which is directed against (modified) lipoproteins which accumulate in the vessel wall.

Promotores: Prof.dr. H.P. Spaink & Prof.dr. P.C.W. Hogendoorn Co-promotor: Dr. M.J.M. Schaaf

How to bring together different footprints into an integrated family and what are the synergies? What are the roles of inventory analysis and characterization in measuring individual footprints and how these affect a footprint family? How to benchmark environmental footprints against related planetary…

What is the mechanism of action preceding a physiological effects induced by metallic nanoparticles?

Promotores: W.T. de Groot, M. Tchuenté, Co-promotor: J.P. Cheylan

Promotor: T. Schmidt, Co-promotor: S. J.T. van Noort

From 3 to 5 September 2025, the project Governing and Building the City will organize the conference 'Good Governance and the Built Environment of Late Medieval Cities (ca. 1200–1600)' at KBR in Brussels. The deadline for the call for papers is 7 April.

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.

A new publication on changes in the relationship between news and their public in Chile

Promotor: C.A.M.J.J. van den Hondel, Co-promotor: Sandra de Weert

Round Table

Op 20 oktober 2021 verdedigde Michael Ramsden het proefschrift 'The Role of the United Nations General Assembly in Advancing Accountability for Atrocity Crimes: Legal Powers and Effects'. Het promotieonderzoek is begeleid door promotor prof.dr. N.M. Blokker.

The idea of citizens and public professionals collaborating to provide public services has widely spread in several countries around the globe. Co-production is often presented as the go-to solution for challenges like a legitimacy crisis of both the government and the market, and financial concerns.…

Promotores: Prof.dr. G.A. Persoon & Prof. dr. H.H. de Iongh

1) Assess the trends in supply and production status of these critical minerals and mineral products worldwide and Europe’s dependence including on intermediate products such as permanent magnets, RE based super alloys, batteries, polishing compounds, phosphors, catalysts etc. 2) Trace the entire value…

Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)

This research delves into the unique cultural approach of the Tenggerese people, an Indigenous community in East Java, Indonesia, regarding elderly care. It focuses on their traditional practices of bakti (‘filial piety’) and sayan (‘mutual aid’), deeply ingrained in the community's lifestyle and va…

Graphene nanoribbons (GNRs) are used as a current carrying substrate in investigation of current-induced forces in a low-temperature STM (chapter 2).

For each living organism health is ensured by correct functioning of its cells. Cells therefore have elaborate methods for regulation of their proteins.

Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)

This thesis describes the role of pollution, specifically neonicotinoid insecticides, as an actor of the ongoing biodiversity decline.

Promotor: J.M. van Ruitenbeek, Co-Promotor: S.J. van der Molen

Promotores: Prof.dr. F. van Lunteren, Prof.dr. F.S. Gaastra

Promotor: A.P. IJzerman Co-promotor: L.H. Heitman

Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.

Festival

Control of infectious diseases poses continuous challenges for human health.

Climate change is one of the largest challenges faced by humanity. To combat this research into alternatives to fossil fuels is ongoing. Dihydrogen is considered a good alternative fuel, since its burning only forms water.

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

This thesis contains results on the arithmetic and geometry of del Pezzo surfaces of degree 1.In Chapter 1 we give the necessary background, assuming the reader is familiar with algebraic geometry.

Promotor: A.P. IJzerman

Promotor: A.P. IJzerman