De maandelijkse dosis onderzoeksinspiratie van Leiden Science, van onze medewerkers, voor onze medewerkers en alle andere nieuwsgierigen.

De afdeling Staats- en Bestuursrecht van de Universiteit Leiden heeft een bundel gepubliceerd over de vraag of de historisch gegroeide combinatie van de concepten van democratische legitimiteit en de scheiding van machten mogelijk blijft buiten de context van de traditionele staat, en indien dit mogelijk…

Bacteria are highly complex and diverse organisms that have adapted to survive in ecological niches ranging from the most extreme to the most heterogeneous environments.

Understanding how galaxies form, interact, and evolve comes largely from comparing theory predictions with observational data. Numerical simulations of galaxies provide the most accurate approach to testing the theory, as they follow the non-linear evolution of gas and dark matter in great detail and…

The aims of the project are to: further clarify 'inhibition by safety'; explore and describe all possible sagety factors, with a special focus on the primary human safety source: social connectedness; reviewing prolonged stress responses without stressors.

Deelproject van “

On April 14 we will celebrate the launch of our Faculty action plan ‘diversity and inclusivity’ with a symposium. We will present the action plan and our colleague Professor Tomas Brage will be keynote speaker. He is the Director of Education at the Physics Institute of Lund University in Sweden and…

Things that Matter: Material and Culture in/for the Digital Age. Bern, 23-27 June 2025.

Op deze pagina vind je de opnames van de Tuesday Talks sinds april 2025. Ook de opnames van de voorloper van de Tuesday Talks, This Week’s Discoveries, zijn hier te vinden

Participants in this course will learn to support student teachers and new colleagues in their professional development as teachers, with particular emphasis on the context of bilingual or international education, as in the ICLON World Teachers Programme (WTP).

Academici hebben op het gebied van inlichtingen geworsteld met de vraag onder welke voorwaarden internationale samenwerking op het gebied van inlichtingen plaatsvindt. De meeste richten zich op transactionele motieven en gegarandeerde opbrengsten, de zogenaamde ‘Quid pro Quo’. Tegelijkertijd wordt vertrouwen…

Van zwarte gaten tot kunstmatige intelligentie en van medicijnonderzoek tot data science: welkom in de fascinerende wereld van de Faculteit der Wiskunde en Natuurwetenschappen. Geregeld geven onze onderzoekers, studenten en gasten publieke lezingen over hun werk. U bent van harte uitgenodigd.

In June 2024, the University of Groningen organizes a summer school, titled "Things that Matter". The Summer School explores challenges in digitizing source materials, questioning distinctions between physical and digital copies. It delves into the impact of virtual collections and criteria for digitization,…

Het voorgestelde project evalueert hoe de kwetsbaarheid van migrantenmannen en -vrouwen werd geconstrueerd in politieke, publieke en mediadiscoursen, en hoe verschillen in de geconstrueerde kwetsbaarheid van invloed waren op de beslissing om te migreren, het migratieproces en het daaropvolgende vest…

For questions and suggestions regarding the series, please contact prof. dr. Olaf van Vliet or dr. Max van Lent

In een korte presentatie vertelt een onderzoeker van de Faculteit der Wiskunde en Natuurwetenschappen over zijn of haar onderzoek.

Presents a novel philosophical account of psychedelic experiences, arguing that they can be induced by means other than psychedelics — such as meditation and yoga.

Tijdens de IBL Spotlights bespreken onderzoekers van de afdeling Science Communication & Society hun nieuwste bevindingen en realisaties.

eLaw onderzoekt de rol van het recht in de informatiemaatschappij: hoe kan het recht bijdragen aan een goede werking van informatie- en communicatietechnologie, en het gebruik ervan door burgers, bedrijven en overheden?

Het LAK biedt verschillende schrijfcursussen aan. Maak kennis met de wereld van verhalen verzinnen. Leer als schrijver je eigen stem vinden en zet de eerste belangrijke stap van een idee naar een verhaal. Of maak kennis met poëtische technieken. Of leer je hoe je nieuwswaarde vindt en hoe een tekst…

Alumni-activiteit

Het onderzoek binnen de Faculteit der Wiskunde en Natuurwetenschappen omvat de disciplines wiskunde, informatica, sterrenkunde, natuurkunde, scheikunde, bio-farmaceutische wetenschappen, biologie en milieuwetenschappen.

Atherosclerosis is the most important underlying process that drives cardiovascular disease, and is characterized by an accumulation of cholesterol which triggers an inflammatory response in the vessel wall.

This thesis focuses on protoplanetary disks: flattened structures of gas and dust around young stars in which planets are expected to form and grow.

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: H.V.J. Linnartz

The research presented in this thesis concerns one of the most important questions in software engineering of our time: how can we make sure that software is free from memory safety bugs?

In this thesis,

Promotor: Prof.dr. P. Stevenhagen, Prof.dr. K. Belabas (Univ. de Bordeaux)

Promotor: Prof.dr. B. van de Water

This thesis describes the functional analysis of the Arabidopsis AHL15 gene.

Natural resources often stretch across borders that separate modern nation states. This can create conflict and limit opportunities for regulated consumption of their goods and services, but also provide opportunities for joint multinational efforts that exceed single country capabilities.

Metal complexes and 2D materials like graphene were combined to produce structures that can function as sensors.

Promotor: P.M. Brakefield

In this thesis, two potential therapeutic targets for diabetic nephropathy were dentified and investigated. First, we show that glomerular clusterin is upregulated in diabetic nephropathy and demonstrated that recombinant clusterin protein can protect the podocytes against oxidative stress in vitro.…

BlaC is the β-lactamase of Mycobacterium tuberculosis. We show that it can recover from inhibition by clavulanic acid and that phosphate helps it do so.

We have examined sequences from the ligand-binding domain of the nicotinic acetyl choline receptor (nAChR) in 148 vertebrate species. We are in interested in this receptor because the α-neurotoxins of many venomous snakes binds to this receptor in its location at the neuromuscular junction in all ve…

Promotor: Christoph U. Keller, Co-promotores: Matthew A. Kenworthy, Frans Snik

Promotores: R. Cramer, A.K. Lenstra, Co-Promotor: B.M.M. de Weger

There is concern about the threat that nanoplastics (NPs) may pose to both wildlife and humans. This thesis explores the mechanisms of toxicity of polystyrene nanoparticles (PS-NPs) in chicken embryo.

Promotores: Prof.dr. H Lenstra, Prof.dr. A Facchini (Padova University)

Promotor: S.M. Verduyn Lunel

Promotor: J. Zaanen, Co-Promotor: V. Juricic

During embryonic growth, cells proliferate, differentiate, and collectively migrate to form different tissues at the right position and time in the body.

Promotor: Prof.dr. E.F. Smets. Co-promotores: B. Gravendeel, F. Pupulin

Over the last decades, aviation safety has improved strongly. As a downside, airline pilots do not have as many opportunities to develop through experience the competencies that they need in critical situations.

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.

The complexity of an intelligence problem determines to a great extent the certainty that can be provided by intelligence and security services.

Urbanisation is steadily increasing with estimates expecting that 68% of the global population will live in cities by 2050. To accommodate the rural to urban transition, large quantities of land are transformed from natural to urban lands.

This thesis contains results on the arithmetic and geometry of del Pezzo surfaces of degree 1.In Chapter 1 we give the necessary background, assuming the reader is familiar with algebraic geometry.