How can party bans be justified? Which parties were banned in post-war Europe – and why? Do militant democracy instruments work? Is an international militant democracy concept in the making?

What does our faculty stand for and what will we do in the next five years? We are proud to present our new strategic plan that we made together. On this website you will find more information about what our Faculty stands for and what our course is for the coming years

Winning gold in speed skating at the Olympic Games is not just a matter of training hard; data science can also lend a hand. Jeroen van der Eb of the Leiden Institute of Advanced Computer Science (LIACS) developed the measuring skate for this purpose, with which he recently won the Nationale Sportinnovator…

Leiden Professor of Molecular astrophysics Ewine van Dishoeck has been awarded an Advanced Grant by the European Research Council (ERC). She has been awarded 2.3 million euros in research funding for the MOLDISK programme. Within this programme, Van Dishoeck wants to connect chemistry and physics in…

Plant Sciences' contribution to the Host-Microbe Interactions research theme is to dissect how microorganisms and microbiomes interact with the plant host and the insects on those plants, and how these insights may be harnessed to improve plant growth and health, by steering microbiome composition and…

The master's specialisation Astronomy and Instrumentation at Leiden University focuses on fully understanding the physical principles and performance of astronomical instruments and to contribute to the development of new instrumentation technologies.

Het proefschrift omschrijft de chemische synthese van fenolische glycolipiden van verschillende mycobacteriën met het doel om deze te kunnen gebruiken voor immunologisch onderzoek.

Design and synthesis of two 3-substituted swainsonine derivatives with the aim to improve the potency and selectivity towards Golgi alpha-mannosidase II.

Synthetic methodlogy is described, aiding in the synthetic preparation of putative inhibitors of retaining and inverting glycosidases and glycosyl transferases. All constructs are cyclophellitol-based cyclitols.

The chemical synthesis of inhibitors and probes targeting endo-glycosidases.

Microbial Sciences' contribution to the Host-Microbe Interactions research theme is to investigate how beneficial or disease-causing microbes associate and interact with their host.

Four different astronomical societies are active in the Old Observatory. We are very proud of the commitment these associations show to organize activities.

I have studied the hot, diffuse gas around and between galaxies. Specifically, I have used the EAGLE numerical simulations of galaxy formation to predict the properties of this gas, and I have used those properties to predict specific observables: soft X-ray absorption and emission lines.

The formation and evolution of galaxies is fundamentally driven by the formation of new stars out of cold gas.

Lecture

This dissertation reports on the pedagogical content knowledge (PCK) of science teachers during a professional development program. This research intended to help us understand why and how teachers make their classroom decisions as they teach science.

Former PhD student Cameron Mackie will been awarded not one, but two dissertation prizes for his thesis on the aromatic universe. His work could provide us with a virtual sniff of space. ‘These molecules in space likely smell like a big charcoal grill!’

SAILS aims to forge links between the different disciplines at the University and to initiate new academic partnerships.

Overall dispersion in LCA as result of inherent uncertainties, spread and unrepresentativeness.

The IBL Education Office consists of:

First held in 2013, the Europa Lecture is an annual lecture organised by the Europa Institute of Leiden Law School. It provides leading thinkers, scholars and politicians with a platform to share their views on questions of European integration with the academic community and wider public.

For thousands of years bloodlines have been held as virtually unassailable credentials for leadership, with supreme political power perceived as a family affair across the globe and throughout history.

The Cryogenics Department has a liquid helium production unit and an automatic liquid nitrogen filling plant.

Read more about the International Network Open Science & Scholarship Communities in our Vision and Mission statements.

Corporate R&D organizations and their relation to academic laboratories.

This Thesis describes the synthesis of D-alanylated ribitol-based wall teichoic acids from S. aureus to probe their interaction with immune-binding partners.

This thesis describes the development of a variety of mannosylated conjugates. Antigen presenting cells bear mannoside recognizing receptors that actively transport antigen into the cell. This thesis exploits this feature for the development of improved vaccines.

Working for a top faculty? Discover the vacancies at the Faculty of Science and apply immediately.

An international team led by Leiden astronomers has, after years of searching and defying the boundaries of a telescope, for the first time directly captured polarised light from an exoplanet. From this light they can deduct that a disk of dust and gas orbits the exoplanet. In this disk moons are possibly…

The master’s specialisation Bio-Pharmaceutical Sciences and Industrial Pharmacy at Leiden University examines safety and quality control in the production of medicinal products, and prepares students for a career in Quality Assurance and Quality Control in the biotechnological and pharmaceutical ind…

Big Science, commonly defined as conventional science made big in three dimensions, namely organizations, machines, and politics, brings a plethora of different stakeholders together, often for a long period of time. This includes policymakers, scientists, (scientific) managers as well as local “host”…

The master’s specialisation Bio-Pharmaceutical Sciences and Business Studies at Leiden University combines fundamental and applied research with different aspects of business studies.

Patterned detectors are an existing technology that can be found in almost all color cameras.

This dissertation describes several studies concerning the research-teaching nexus in the sciences.

Carl Li defended his thesis on 30 June 2015

This UNESCO Chair at CWTS aims to contribute to UNESCO’s agenda to foster diversity and inclusion in science. The chair has two main lines of work:

UnMiSSeD studies the interaction between misinformation and science in societal debates using a mixed qualitative-quantitative approach.

Our mission: a positive impact. Our vision: community. By involving the world around us in our education and research we make a positive impact. We do this by applying Open Science.

Environmental challenges such as plastic pollution and biodiversity loss require extensive monitoring. Citizen science, in which members of the public participate in scientific research, has therefore become an important approach in environmental science.

Impressions by Dr. Lilian Ruhe

Change requires community. Become a member of OSCL today!

OpenML empowers scientists to conduct transparent, reproducible, and collaborative AI-driven research.

Promotor: Prof.dr. J. Schaye, Co-promotor: Marcello Cacciato

Lange tijd wisten we ons thuis in een wereld die we meenden te hebben. Het bestaan in deze vertrouwde wereld vormde onze existentie, die we op een eigenlijke wijze op ons namen. Thans is de wereld echter niet meer wat hij was, en zijn we ook zelf niet meer wie we waren. ‘De wereld is weg’, zo dichtte…

Astronomer and Marxist Anton Pannekoek was a remarkable figure. This book aims to study the connections between his life as a socialist theorist and as a pioneering scientist through the prism of Pannekoek's biography.

The Old Observatory is located on the grounds of the Hortus. This is the oldest surviving university observatory in the world. Since 1633, the University of Leiden has used the various rooms for the education of students. The Visitor Center on the ground floor of the Old Observatory is part of the Hortus…

This thesis investigates how galaxies form and what diversifies the evolutionary histories of galaxies.