Bacterial biocatalysis constitutes a sustainable alternative for high-value chemicals production by enabling the utilization of renewable feedstocks.

Compact Cinematics challenges the dominant understanding of cinema to focus on the various compact, short, miniature, pocket-sized forms of cinematics that have existed from even before its standardization in theatrical form, and in recent years have multiplied and proliferated, taking up an increasingly…

Barbarism: from the 18th century to the present.

PhD at Molecular Biology and Biochemistry Department, University of Malaga - Spain

Aspergillus niger is an important industrial producer of organic acids and enzymes producing large amounts of spent fungal biomass.

In the last decade, the redox interconversion between metal thiolate and disulfide compounds has been extensively investigated for copper, but not for other transition metal ions.

This dissertation is concerned with the study of the less than twenty remaining precolonial Mesoamerican codices. By considering these rare and fragile pictographic and hieroglyphic books from the cultural biography perspective, many different aspects of these books can be studied.

Promotor: S.M. Verduyn Lunel

In my research, we developed a method to distinguish knots. A knot is a mathematical depiction of the everyday knot that occurs in ropes and cords.

Promotor: Prof.dr. J. Kuiper

Do recent developments in the European security architecture signal the end of multilateral cooperation, or the beginning of a new era with emerging forms of international security collaboration?

Historiography of science is in its current self-image a non-evaluative discipline. Its main goal is to understand past processes of knowledge formation on their own terms. In the last few decades this approach has greatly improved our understanding of the phenomenon of science. Yet, something strange…

Matthew Hoye argues for a regulatory analytical perspective to look at the sanctioning of Afghanistan.

In Humanity’s End As A New Beginning, Emeritus Professor Mineke Schipper reflects on myths about ‘the end’.

The Children’s Rights Monitor provides a thematic overview of the implementation of the UN Convention on the Rights of the Child in the Netherlands.

The spindle-assembly checkpoint (SAC) is a safety mechanism which secures accurate chromosome segregation during mitosis.

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

Leiden University publishes an overview of the ancillary positions of its professors.

This article illustrates how the term 'dual use' has become associated with a broader dichotomy between ‘legitimate’ and ‘illegitimate’ purposes.

Utilizing the polymeric platform of polypept(o)ides, this thesis describes synthesis and investigation of novel triblock copolymers to obtain carrier systems with multiple compartments for efficient siRNA delivery. Although the individual microstructure of nanoparticles differs depending on the polymeric…

Does “putting yourself in the migrant’s shoes” elicit more positive attitudes toward migration? Can perspective-taking – the active consideration of others’ mental states and subjective experiences – help undermine negative stereotypes and prejudice against migrants? We explore these questions in Ecuador,…

On the 28th of September, Jiang Wu successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Jiang on this achievement!

Alongside Leiden, Leiden University has a second hometown: The Hague.

Wouter Eekhout, our data magician, came in 3d place in the ‪#‎LinksSDGs‬ - Natural language processing and data visualization challenge.

After 20 years of police reform, Jasper De Paepe and Marleen Easton look back and discover what we can learn about partnerships between police and science in Belgium.

Self-assembly is an abundant process in nature and is vital to many processes in living organisms.

Cancer is considered the silent pandemic of the 21st century and the second leading cause of death worldwide.

Subproject of

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.

On the 6th of November, Virginia Beavon Ham successfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Virginia on this achievement.

This book looks to existential thinkers for reasons to hope immortal life could be worth living. It injects new arguments and insights into the debate about the desirability of immortality, and tackles related issues such as boredom, personal identity, technological progress, and the meaning of life…

In 2025, Leiden University College became the first university programme in the Netherlands to receive the special “Sustainable Higher Education” label from the NVAO, the Dutch-Flemish Accreditation Organisation.

Lysosomal acid glucosylceramidase (GBA1) is a lysosomal enzyme that degrades glucolipids with its main substrate being glucosylceramide (GlcCer). Defects in the GBA1 gene lead to glycosphingolipidosis Gaucher disease (GD), in which the hydrolysis of GlcCer is impaired and therefore, it accumulates in…

Interaction between Legal Systems acknowledges that law-making and law enforcement are increasingly taking place on various levels: in a global context, in EU context, on a national level and in a private law framework. These levels influence each other, sometimes directly, on the basis of a hierarchical…

The availability of complete plant genome sequences together with the ever increasing amount of data on the molecular, cellular and physiological mechanisms of plant development require mathematical and computational models to obtain a complete overview of and generate new insights into the quantitative…

Because of their large surface area and immunological competence, mucosal tissues are attractive administration and target sites for vaccination.

The main aim of this dissertation was to provide insight into possible subtle forms of bias in youth socialization by various socializing agents in the Netherlands, and exploring new ways to document bias. Additionally, it addresses the importance of using sound statistical methods for calculating effect…

The research at the Living lab attracts a great deal of press attention. Please find below a small selection of the many news reports that have been published. Also take a look at the Zembla programme about the Living Lab.

Ambient sound is a standard term used by sound practitioners to denote the site-specific background sound component that provides a characteristic atmosphere and spatial information in a sound work.

The filamentous bacteria Streptomyces are widespread inhabitants of terrestrial soils.

On the 2nd of July, Axel Palmér successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Axel on this achievement!

This book explores how physicists, astronomers, chemists, and historians in the late nineteenth and early twentieth centuries employed ‘epistemic virtues’ such as accuracy, objectivity, and intellectual courage. In doing so, it takes the first step in providing an integrated history of the sciences…

Berichtigungsliste der Griechischen Papyrusurkunden aus Ägypten, Dreizehnter Band. Herausgegeben von F.A.J Hoogendijk und A. Jördens. Zusammengestellt von J.M.S. Cowey und F.A.J. Hoogendijk (Leiden-Boston, Brill, 2017).

Promotor: E.F. Smets Co-promotor: J. Geml

This week, Prof. Luuk van Middelaar (Europa Institute) publishes Alarums & Excursions: improvising Politics on the Europen Stage – a revised update of his 2017 book on the decade of EU crises.

Loneliness and social isolation have become a significant problem in contemporary Japan. The financial burden associated with an ageing population has severely constrained the ability of local authorities to address the problem. As a result, policymakers have sought cost‐effective methods of tackling…

Archaeometric analysis of glazed pottery assemblages from the Early Byzantine to the Early Modern periods in the Aegean.

This edited volume by Jeff Fynn-Paul pushes forward the debate on the role of entrepreneurs in making war and building states in Europe and the Ottoman Empire.

The representation of death children in Dutch literature through time

On 11 November 2021, Evelien Campfens defended the thesis 'Cross-border Claims to Cultural Objects'. The doctoral research was supervised by Prof. N.J. Schrijver and Prof. W.J. Veraart (VU Amsterdam).