Combined hormonal contraceptives (CHC) are associated with an increased risk of venous thromboembolism (VTE). In 2013, a review was published by the European Medicines Agency (EMA). In this review, the authors concluded that the risk of VTE varies by the type of progesterone in the CHC. Subsequently,…

On the 12th of November, Xander Vertegaal successfully defended a doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Xander on this achievement!

On the 12th of December, Eleanor Dutton successfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Eleanor on this achievement.

The Centre for the Study of Political Parties and Representation (CSPPR) aims to serve as an interdisciplinary platform for scholars of Leiden University for research focusing on the historical and contemporary operation and functioning of political parties and political representation, with a particular…

From 1 August 2018, Alanna O'Malley was appointed as Chair of United Nations Studies in Peace and Justice, focusing on the ‘lesser-known actors’ of the UN: women, the youth, the agents of informal diplomatic networks within the UN and actors from the Global South. This Special Chair has been created…

How is social cognition shaped by our knowledge of language and stories?

In this thesis, the research focuses on the properties of dark matter and dark matter haloes and how they connect with the galaxies we can observe in the Universe.

This thesis attempts to establish a dialogue between the modern and the medieval traditions in logic, by means of ‘translations’ of the medieval logical theories into the modern framework of symbolic logic, i.e. formalizations.

Promotor: M. Ubbink, Co-promotor: G. Siegal

The research described in this thesis has, using the zebrafish as a model system, shed new light on the intricate relationship between TB and DM2, in particular on the role of leptin, SHP-1 and glucocorticoids.

Het National Ocean Decade Committee heeft twee nieuwe leden benoemd van de Universiteit Leiden. Hilde Woker en Renate Reitsma zullen zich als leden van dit comité inzetten om het het belang van oceaanwetenschappen te promoten.

This project incorporates spatiality into the discussion of medieval demography, allowing for a more nuanced view on medieval town populations. It establishes a maximum population count for towns for periods prior to 1400 and provides a means to compare the ranking of towns using size and density instead…

Computers are becoming so smart that in the future they will perhaps take over the role of judges. In the meantime, experts at Leiden University are examining the question of which standards responsible data science should meet.

At the Hague University of Applied Sciences, a stakeholder meeting took place on 4 April in the context of peace and justice in a digital world. The meeting was an initiative of Leiden University (LCDS, eLaw) and the Hague University of Applied Sciences, to explore joint curriculum development in the…

On 30 August 2024, 330 students received their Bachelor Diploma of International Studies. The students were awarded their diplomas in the historic Pieterskerk in Leiden. A large audience of about 1000 people consisting of friends, family, and staff members gathered to celebrate the graduates’ achievements…

We aim to develop a microfluidic platform that can parallelize testing the performance and characteristics of pure, mixed and environmental bacteriophage samples.

Promotor: Prof.dr. G.P. van Wezel

Prof. Jaap van den Herik was a guest in the latest episode of the Nationale Data Podcast.

Can zebrafish provide a fast, sensitive in vivo vertebrate model for identifying novel mechanisms of Ewing sarcoma progression and for development of new anticancer compounds in a time- and cost-effective manner?

This research cluster explores processes of cultural creation, reception and transformation within a wide range of societal contexts from the early Middle Ages until c. 1800.

The Organ Art of the first female German concert organist and Bremen Cathedral organist and

This thesis describes the synthesis and biological evaluation of TLR2/6, TLR4, TLR7/8 and TLR9 ligands, of which the activity can be conditionally controlled.

Markus Davidsen defended his thesis on 16 October 2014

Rie Schild-de Groen watched over ‘her’ Gentlemen, the residents of the ‘t Heerenhoeckje (Gentlemen’s Corner) Minerva house at Rapenburg 110, like a mother hen for 70 years. She was moved by the stories of residents who had lost loved ones to cancer. Jaap Koster and a few other former housemates helped…

The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…

On Wednesday 13 December at 13.45 hrs Jaap Wieland will defend his doctoral thesis entitled ‘De bescherming van concurrentiebelangen in het bestuursrecht’ (the Protection of Competition Interests in Administrative Law) at the Academy Building of Leiden University. His supervisors are Professor Willemien…

Privacy continues to keep the attention: from MeToo! to Facebook. The legal magazine 'Ars Aequi' has published a special issue 2019 dedicated to the concept of Privacy. Three contributions originate from eLaw, the center for Law and Digital Technologies at the Faculty of Law.

Bij Amsterdam University Press verschijnt 'Imams in Western Europe. Developments, Transformations and Institutional Challenges' onder redactie van Mohammed Hashas, Jan Jaap de Ruiter en Niels Valdemar Vinding, een publicatie waarin tal van zaken met betrekking tot imams in Europa behandeld worden. De…

From the new street language Smibanese to 17th-century manuscripts: the first national Dutch Studies Open Day explores a wide range of topics. The Open Day will take place on Saturday 7 March in Leiden. Frits Spits will broadcast his radio programme ‘De Taalstaat’ (The Language State’) from the Kamerlingh…

Promotores: J. Kok, M. Chaudron (Chalmers University)

The making of sacrifices seems part and parcel of any elite sportsperson’s life. Remarkably, the insights that we find in the current literature in social sport studies are not able to make sense of the references to sacrifice in the data that emerged in the context of this study on the social significance…

n this PhD thesis, the recombination of different atomic lattices in stacked 2D materials such as twisted bilayer graphene is studied. Using the different possibilities of Low-Energy Electron Microscopy (LEEM), the domain forming between the two atomic layers with small differences is studied.

Promotor: Prof.dr. A.G.G.M. Tielens, Co-Promotor: J.B.R. Oonk

Study information

The aim of this study is to further develop the Open Science Monitor, which started as a pilot study.

Promotor: Prof.dr. E.F. Smets

What makes a good historian? When historians raise this question, as they have done for centuries, they often do so to highlight that certain personal attitudes or dispositions are indispensable or studying the past. Yet their vieuws on what virtues, skills or competencies historians need most differ…

Can we predict fluctuations in suicidal ideation in a person’s daily life, from hour to hour?

The ARTIVES project studies imaginaries of diversity portrayed by artists in Lisbon and Rotterdam in their films, performances and (oral) literature with the aim to explore their transgressive potential of opening up possibilities of thinking differently about migration-related diversity. Their stories…

The project seeks to explore the interplay of valuation and inequalities in science, using the interdisciplinary and planet-critical field of forest research as empirical case. It examines which/whose knowledge is recognised on what grounds, and how social dimensions like gender and geographical location…

This thesis describes a study from both a theoreticaL and an experimental point of view.

In recent years, the use of primary data in terrorism research has increased. In order to maximise the benefits of this trend, we want to encourage terrorism scholars to implement open science practices more systematically. This article therefore presents different avenues towards open and reproducible…

In this article, Lianne Visser contributed to the understanding of why collaborative governance is a challenging response to wicked problems.

As part of Nexus 1492 Subproject 4: A Future for Diverse Caribbean Heritages, which seeks to shed light on how local communities interpret and engage with heritage in the present day, this doctoral study aims to gain insight into how indigenous heritage is represented in the school curriculum for social…

In this thesis, I study 1) metabolic alterations in tuberculosis related to wasting syndrome in human patients as well as in rodent and fish animal models. 2) effects of the mutation of the leptin gene on cachexia and diabetes in rodent and zebrafish animal models.

Promotor: Prof.dr. R.M.H. Merks