Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.

Promotor: J.N. Kok, Co-promotor: M.S. Lew

This thesis presents the results of a study on the interfaces of insulating oxides with and without the insertion of a magnetic layer.

Comparison across jurisdictions is one way of assessing the appropriateness of lethal force resulting from the actions of law enforcement agencies. This article sets out a vision for a global use of force monitor that can enable meaningful comparisons between law enforcement agencies. It examines some…

FSW building, Wassenaarseweg 52, 2333 AK, Leiden

With our research and teaching, we help make the world a better place. We join in the academic and public debate, and seek answers to economic and social issues – not just at the local and regional level but at the global one too.

Willem Peene defended his thesis on 12 January 2017

Jochem van den Boogert defended his thesis on 18 November 2015

A common method to solve expensive function evaluation problem is using Bayesian Global Optimization, instead of Evolutionary Algorithms.

On 9 September 2020, Ruben de Graaff defended his thesis 'Concurrence in European Private Law'. The doctoral research was supervised by Prof. A.G. Castermans and Prof. S.C.G. Van den Bogaert.

The function of TLRs in innate immunity has aroused worldwide attention soon after its discovery. Because of the broad functions of TLR2 in innate immunity, the drive for the development of TLR2-targeted vaccines or therapeutic treatments has accelerated in the last decades.

Promotor: E. Gittenberger, Co-promotor: B.W. Hoeksema

This thesis is about the study of hydrocarbons via infrared spectroscopy.

Jaroslaw Kantorowicz and Rok Spruk examine the contribution of institutional reforms to economic growth.

What is the role of the noradrenergic system in human cognition?

People who have taken antibiotics in the past three months pay more attention to negative facial expressions, according to research by postdoc Katerina Johnson and assistant professor Laura Steenbergen. This may explain how antibiotics increase the risk of developing depression.

Are you graduating at the Faculty of Science? Or are you supervising a PhD student? At the Graduate School of Science you find support at every phase of your PhD.

In our culture, vocal harmonics function as independent musical elements since only a few decades. Thresholds of the audible explores the changing relationship between singers, listeners and harmonics.

The starting hypothesis of the project is that secrecy is not always inimical to democratic governance as conventional wisdom has it.

Mr. Ade Jaya Suryani defended his thesis on 28 January 2021

The Global Transformations and Governance Challenges Programme hosts a range of international academic gatherings, including the GTGC Conference, the GIG-ARTS Conference in 2024, and the first edition of the Just Peace Festival in 2025.

The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.

To what extent do aspects of fluency fluctuate throughout time? And how do raters take the dynamicity of fluency into account when rating performances?

On the 5th of September, Zhen Li successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Zhen on this achievement!

Lipsius, Cleveringaplaats 1, 2311 BD, Leiden

Edited by Dr. S. Arnoldussen and Prof. dr. H. Fokkens

Carbonaceous asteroids preserve a record of early solar system processes, where minerals and organic molecules, like polycyclic aromatic hydrocarbons (PAHs), offer clues to planetary evolution and prebiotic chemistry.

On the largest scale, the Universe resembles a cosmic spiderweb. Most galaxies coexist in small groups within the threads of this web. At the nodes of the threads are enormous groups of galaxies forming the largest structures in the universe still held together by gravity: clusters of galaxies.

This thesis describes the structural and biochemical characterization of the β-lactamase BlaC from Mycobacterium tuberculosis (Mtb), and the Alr and YlmE proteins from Streptomyces coelicolor A3(2).Mtb is the main cause of tuberculosis.

Legitimacy is generally a term that is associated with the state. The term surfaces when there are problems with state legitimacy—when it is lacking or absent. This present volume attempts to think through the relevance of the concept of legitimacy for other political actors than the state.

Promotor: H.P. Spaink, A.H. Meijer Co-promotor: R. Marin-Juez

On 1 February 2018 Nathalie-Sharon Koster defended her doctoral thesis ‘Crime victims and the police’. The doctoral research was supervised by Professor J.P. van der Leun and M.J.J. Kunst.

For knowledge to really benefit society as a whole, knowledge institutions, the municipality, citizens, and all other parties or organizations involved need to be aware of each other's contributions and needs. The Leiden Healthy Society Center has the ambition to connect up knowledge, policy, and practice…

PNEC-pro is a user-friendly screening tool for professionals dealing with the assessment of surface water quality. The tool calculates local, watertype specific no-effect concentrations (PNEC) of copper, lead, nickel, and zinc based on biotic ligand models (BLMs).

This interdisciplinary research project explores several adaptive machine learning methods which can give insight into the interaction between human and machine. The ultimate goal is open and natural communication between humans and AI that should result in mutual trust, cooperation and coordination…

The Faculty of Humanities consist of various academic fields. What is the common ground of all these different academics and students? They tell their story and why it matters in today’s world in 'We are Humanities'.

What kind of attentional focus can enhance learning and performance for musicians?

Mapping the neural mechanisms underlying social motivations of adolescents and adults

Summer schools and seed funding calls are just two of the many Una Europa opportunities for researchers and teachers at Leiden University and LUMC.

Wijnhaven, Turfmarkt 99, 2511 DP, The Hague

Several alumni, young alumni and students have been matched via the Leiden University Mentor Network.

Have you not yet had the chance to sign your signature on the walls of the Sweat Room? Or would you like to pay a digital visit to the famous room?

Together@FGGA – Together towards a safe, inclusive and balanced work environment

Natascha van der Zwan, Assistant Professor at Leiden Univeristy, together with two other authors, wrote a book that explored some of the ways coronavirus is impacting the global capitalist system – and how this could change for better and for worse.

How does self-reliance lead to a decrease in collaboration for public goods?

The AI Humanities Lab in Huizinga 0.09c is an innovative space where researchers explore the intersection of Artificial Intelligence and the Humanities. 

The Centre for Science and Technology Studies (CWTS) is a research institute at Leiden University working on improving how science is practiced and governed and how it serves society.

On February 7th, Lotte Dros-Hendriks succesfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Lotte on this great result.

Bacteriophages, or phages for short, are the most abundant biological entity in nature. They shape bacterial communities and are a major driving force in bacterial evolution.

Leiden University offers you several services related to career orientation and job application skills.