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

Single-layer graphene (SLG) has attracted considerable interest as a proton exchange membrane for direct methanol fuel cells (DMFCs), owing to its atomic thickness, mechanical robustness, and unique proton permeability.

On 12 November, Clare Fenwick defended her doctoral thesis, The Political Economy of Immigration and Welfare State Reform: A Collection of Comparative Political and Economic Essays on Human Mobility and Social Protection. The PhD research was supervised by Olaf van Vliet and Kees Goudswaard.

This thesis advances our understanding of lipid uptake, a vital first step in lipid metabolism, by developing innovative click chemistry-based tools to study how immune cells internalize lipids.

The overall theme of this thesis is to complement the electrochemical data acquired in fuel cell research with in situ X-ray photoelectron spectroscopy (XPS) and soft X-ray absorption spectroscopy (XAS).

Neurodegenerative diseases pose a large medical and societal challenge. The etiology of these diseases is still poorly understood, which makes drug discovery for these diseases difficult.

The 2006 United Nations Convention on the Rights of Persons with Disabilities differs markedly from other forms of international human rights law: it not only protects the rights of individuals but also addresses interpersonal relations and social structures. How did the convention attain this broad…

On the 6th of January, Kefan Bao successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Kefan on this achievement!

Cognitive processes of learning with a focus on reading comprehension and the development of mathematical skills.

Throughout the twentieth century, scholars, artists and politicians have accused each other of “historicism.” But what exactly did this mean? Judging by existing scholarship, the answers varied enormously. Like many other “isms,” historicism could mean nearly everything, to the point of becoming mea…

How do cognitive, motivational, and affective processes interact to select actions?

How do humans control their thoughts and actions, and what can high-field brain scanning reveal about the underlying processes?

This accessible textbook uses key documents embedded in a clear narrative to chart the post-Cold War rise and decline of transatlantic relations. It provides a novel interpretive framework by proposing that the three decades between 1989 and 2020 represent a distinct ‘transatlantic era’.

Surreal Geographies recovers a forgotten archive of Holocaust representation. Examining art, literature, and film produced from the immediate postwar period up to the present moment, Kathryn L. Brackney investigates changing portrayals of Jewish victims and survivors.

This study explores public leaders’ organizational learning orientation in the wake of a crisis. More precisely, we study the association between public leaders’ public service motivation and their learning orientation (instrumental versus political).

This open access book explores the role of continuity in political processes and practices during the Age of Revolutions.

This study employs a comparative perspective to identify generic and specific qualities of petitions and petitioning. It charts the chronological development of petitioning practices over centuries. The interdisciplinary approaches provide range of conceptual and methodological expertise for reade…

Why does the history of dogmatism deserve our attention? This open access book analyses uses of the term, following dogmatism from Victorian Britain to Cold War America, examining why it came to be regarded as a vice, and how understandings of its meaning have evolved.

On the 16th of December, Ruixue Wu successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Ruixue on this achievement!

On the 16th of December, Yachan Liang successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Yachan on this achievement!

This thesis explores how bees and hoverflies are distributed across the Dutch landscape and how ecological and landscape factors shape their occurrence.

This dissertation advances automated negotiation by developing agents that can learn and adapt across diverse negotiation settings through three increasingly sophisticated approaches: automated algorithm configuration, portfolio-based strategy selection, and end-to-end reinforcement learning with graph…

Astronomy began by studying the light from the stars. These stars are born in vast clouds of gas and dust.

This project investigates the professionalisation of university libraries in the nineteenth and early twentieth centuries, through the lens of the medieval manuscript holdings. Taking Leiden University Library as a starting point, it sheds light on the changing practices surrounding the conservation,…

A New Technology-Based Firm (NTBF) is a significant enabler of job creation and a driver of the economy through stimulating innovation.

Using EcoFab 2.0 devices and omics services at JGI, we will examine a plant growth promoting microbial community during interaction with different plant species.

Quantum position verification (QPV) - the subject of this thesis - is a novel way to authenticate unknown nodes in a quantum network without the need to physically meet up.

In this article, Meier & Nadler suggest that while non-citizen enfranchisement boosts participation across all citizens, citizens with immigration backgrounds are more reactive to the NCV rights in terms of higher turnout. In this way, the paper adds a critical nuance to individual-based explanations…

How do mycobacteria subvert the defenses of host immune cells?

The relevance of intentionality to the interpretation of Aristotle was first suggested by Brentano in his Psychology from an Empirical Standpoint. Here we take our starting point from Brentano and investigate how Brentano’s concept of intentionality is rooted in Aristotle.

In this thesis integral points on affine del Pezzo surfaces are studied.

Promotor: Prof.dr. B. van de Water, Co-promotores: J.W. van der Laan, C.L.E. Siezen

Pancreatic ductal adenocarcinoma (PDAC) is among the cancers with the highest mortality rate, despite a relatively low incidence.

Streptomyces present a valuable platform for natural product discovery. Lugdunomycin is a novel angucycline-derived polyketide from Streptomyces sp QL37, with unprecedented skeleton and antimicrobial activity.

This book focuses on transnationalism as a key concept to evaluate how Europe responds to cross-border security challenges.

This dissertation investigates how the efficiency of Computed Tomography (CT) can be improved for dynamic scientific and industrial applications.

The Great Rift Valley in Africa is a real treasure trove for discovering early human fossils. The fossils found in this part of Africa have determined our view of human evolution. But was the Great Rift Valley really the place where evolution took place or just a place where fossils are well preserved…

In my research, I used a comparative wood anatomical approach to address wood evolution of the (largely) tropical flowering plant families Apocynaceae and Sapotaceae.

Joe Finnerty has co-edited the 2026 Symposium in the Human Rights Law Review entitled Legitimate Aims and Ulterior Purposes in International Human Rights Law: Comparative Perspectives.

Herta Mohr, Maliebaan 30, 2311CC, Leiden

, Maliebaan 30, 2311 CC, Leiden

The vegetative growth period for leafy vegetables like lettuce is essential for yield and quality.

Preterm birth is a major contributor to neonatal morbidity and mortality and is associated with both acute complications and long-term health consequences.

Lecture

Pectin is a plant cell wall polysaccharide made of mainly D-galacturonic acid (GA) subunits. The potency of the filamentous fungus Aspergillus niger to naturally secrete high amounts of pectinases to degrade pectin has been utilized for the industrial production of pectinases.

This article, by Sara Perlstein, explores how perceived social acceptability shapes whether people talk about risks, showing that risk perceptions and conversations are socially negotiated rather than purely individual.

This research examines cultural pathways as a tool, methodology and framework for advancing climate action in the Anglophone Caribbean through the integration of archaeological, ethnographic, and community-based knowledge.

In the emerging field of small-molecule RNA targeting, there is a growing demand for new high-throughput screening methods.

This thesis focuses on developing new chemical synthesis strategies to produce native ADP‑ribosylated biomolecules with precise structural control.

This thesis investigates catalytic reactions at the atomic scale using scanning tunneling microscopy (STM), with a focus on Fischer–Tropsch synthesis, a key industrial process that converts hydrogen and carbon monoxide into liquid fuels.