Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

Promotor: G.J. Kramer Co-Promotor: E.G.M. Kleijn

Bacterial chemosensory arrays are protein assemblies that are the key structural and functional component for motile bacteria to sense their internal or environmental chemical signals.

Promotor: Prof.dr. B.R. Katzy, Prof.dr. H.J. van den Herik, Prof.dr. G.H. Baltes (University of Applied Sciences Konstanz)

Bicarbonate buffer is largely found in nature due to its ability to regulate pH variations around neutral values. As the pH changes, so does the speciation of the buffer.

Promotor: S.M. Verduyn Lunel, Co-Promotor: O.W. van Gaans

This thesis considers multi-prover commitment schemes whose security is based on restrictions on the communication between the provers.

All crested and marbled newts (the genus Triturus) suffer from an unusual genetic abnormality, called a balanced lethal system, that kills exactly half of their offspring. How can a trait so disadvantageous have survived millions of years of natural selection?

Promotor: P.D. Grünwald

Promotor: J.P. Abrahams, Co-promotor: T. Grüne

Promotor: M. Danhof, Co-promotor: E.C.M. de Lange

LCA has become an important method to study environmental impacts of human activities. Still, there are several methodological issues in LCA that can adversely affect the results reliability.

Astronomical observations of cold regions in the universe show a rich inventory of ices. Part of these ices may end up on planets like our own, but in that journey they will be exposed to considerable amounts of radiation.

The field of exoplanet research is rapidly advancing through the development of new technology, observing techniques, and post-processing methods.

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 thesis deals with properties of Jacobians of genus two curves that cover elliptic curves.

Stars like the sun are born in large molecular clouds existing from gas and dust. During the formation process, the chemical composition of the material can be altered drastically by the changing physical conditions.

Promotor: Prof.dr.ir. E. Deprettere

Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?

The demand for neodymium-iron-boron (NdFeB) magnets is rapidly growing, while the neodymium supply chain is under pressure. Recycling can alleviate these issues. This thesis investigates the potential for deploying novel magnet recycling technologies and their environmental consequences.

Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…

A key step in the synthesis of oligosaccharides and glycoconjugates is the formation of the glycosidic bond.

This thesis presents insights from our study of various correlated electron systems with a scanning tunneling microscope (STM). In ordinary metals, electron-electron interactions exist, but get substantially screened due to the sheer number of electrons.

This dissertation presents the results of the importance of creativity for ICT-students of Dutch universities of applied sciences (in Dutch: hogescholen), and the functioning of training courses that aim to promote creative abilities is highlighted.

Monoacylglycerol lipase (MAGL) is the principal enzyme responsible for hydrolysis of the endocannabinoid 2-arachidonoylglycerol (2-AG). MAGL inhibition provides several potential therapeutic opportunities, including anti-nociceptive, anti-inflammatory and anti-cancer activity.

In today's volatile market environments, companies must be able to continuously innovate. In this context, innovation does not only refer to the development of new products or business models but often also affects the entire organization, which has to transform its structures, processes, and ways of…

Systems are called real-time systems, if the correctness of the system does not only depend on the correctness of the system output but also on whether the output is delivered on time.

Tot ons grote verdriet is onze dierbare collega Andrea Evers op maandag 4 augustus 2025 overleden. Sinds 2013 was Andrea verbonden aan de Faculteit der Sociale Wetenschappen van de Universiteit Leiden, als hoogleraar Gezondheidspsychologie. Ze was een onmiskenbare drijvende kracht, binnen het Instituut…

Het Citizen Science Lab kijkt trots terug op een geslaagde eerste editie van Expeditie Stadsnatuur Leiden. Op 20 juni sloten we de Expeditie af, met een feestelijke overhandiging van de resultaten aan Ashley North, wethouder Klimaat, Mobiliteit en Financiën en met een markt georganiseerd voor en door…

Op woensdag 27 augustus vond de jaarlijkse Levenbachdag plaats, een ontmoetingsdag voor docenten en onderzoekers in het arbeidsrecht en socialezekerheidsrecht. De dag is vernoemd naar Marius Levenbach, de eerste leerstoelhouder arbeidsrecht in Nederland.

De decanen (voorzitters van de faculteitsbesturen) vormen onder voorzitterschap van de rector magnificus de Raad van Decanen (RvD).

Van academische vrijheid tot medische doorbraken en digitale veiligheid: tijdens de 451ste dies natalis van de Universiteit Leiden reflecteerden sprekers op de rol van de universiteit in een wereld vol maatschappelijke en geopolitieke spanning.

Neurowetenschapper Anne Urai is een van de 25 beginnende onderzoekers die voor hun opmerkelijke prestaties zijn bekroond met de Rising Stars of Neuroscience Award. Dr. Urai staat bekend om innovatief onderzoek en inzet voor duurzaamheid in de academische wereld en behoort tot de opkomende wetenschappers…

Een indrukwekkende toespraak van decaan Jasper Knoester, een lezing door toponderzoeker Mario van der Stelt over boodschappers in de hersenen, en de uitreiking van de facultaire prijzen. 2025 startte hoopvol en feestelijk, met een toost op een mooi jaar samenwerken binnen en buiten de faculteit.

2025 was voor FGGA een jaar vol impact en mijlpalen: van recordaantal afgestudeerden en nieuwe opleidingen tot internationale samenwerkingen, prestigieuze prijzen en onderzoek dat grenzen verlegt en actuele uitdagingen inzichtelijk maakt.

Op de dag van de dies begint rector magnificus Carel Stolker aan zijn tweede termijn. Hoe blikt hij terug op de eerste vier jaar en welke plannen heeft hij? Dat vragen burgemeester Lenferink, bestuurskundestudent Mikal Tseggai, hoogleraar Eveline Crone en diverse andere collega’s aan hem.

De onderzoeksgroep Cyber Security Governance bestudeert de impact van moderne technologie op governance, soevereiniteit, wetshandhaving en internationale betrekkingen, en levert toonaangevend academisch onderzoek en beleidsinzichten.

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

In the Schouwburgstraat, LUGO is currently redesigning the back-garden in order to increase biodiversity and make it a more beautiful space. Throughout October 2023 until March 2024, we will be making changes to the garden with our team of volunteers.

Artificial photosynthesis has recognised potential to produce green and sustainable fuels from earth-abundant resources such as water, carbon dioxide (CO2), and sunlight.

The origin and evolution of galaxies are closely tied to the cyclic feedback processes between stars and the interstellar medium (ISM).

Op 23 februari 2022 verdedigde Cale Davis het proefschrift 'Prosecutorial Discretion in International Criminal Justice'. Het promotieonderzoek is begeleid door prof.dr. C. Stahn en dr. J.C. Powderly.

Promotor: E. Bouwman, Co-promotor: S. Bonnet

Binnen de afdeling Publiek Management en Organisatie van het Instituut Bestuurskunde houden wij ons bezig met publieke organisaties en met de manier waarop managers en professionals daarbinnen hun werk doen.

Cholesterol influences many pathways, including serving as precursor for adrenal steroidogenesis. Imbalance of cholesterol levels has been implicated in several diseases including cardiovascular diseases and its underlying pathology, atherosclerosis.

Mechanical metamaterials are man-made materials which derive their unusual properties from their structure rather than their composition.

In the thesis the dynamics of strategies is studied from two perspectives.In the first part of the thesis strategies are considered to be opinions present in a community.

Religious Studies at Leiden University allows you to study a broad spectrum of religions and their manifestations.