De Militaire Inlichtingen- en Veiligheidsdienst (MIVD) heeft een Russische hackoperatie voorkomen op de Organisatie voor het Verbod op Chemische Wapens (OPCW) in Den Haag. Wetenschappers Paul Abels, Willemijn Aerdts, Constant Hijzen en Sergei Boeke van het Institute of Security and Global Affairs reageerden…

Congres/symposium, Workshop on the occasion of the bestowing of an honorary doctorate in Oriental Manuscript Studies on Beatrice Gruendler.

This research project studies the distribution and impact of medieval malaria in the Netherlands.

Wat doet de naam van de middeleeuwse Perzische dichter Nezami (✞ ca. 1209) op de cover van een rockalbum van Eric Clapton? Asghar Seyed Gohrab, universitair hoofddocent aan het Instituut voor Area Studies, vertelt erover in een nieuwe blog voor het Leiden Medievalists Blog.

Drie Leidse geesteswetenschappers hebben een Veni-subsidie van NWO in de wacht gesleept voor hun onderzoeksprojecten. De veelbelovende, pas gepromoveerde onderzoekers kunnen daarmee de komende drie jaar hun wetenschappelijke ideeën verder uitwerken. De Veni's zijn toegekend aan Lucien van Beek, Karwan…

Investigating the intercultural connections that shaped practices of knowledge production in colonial Dutch Brazil.

Op 3 mei jongstleden werd de 10e Niko Tinbergenlezing georganiseerd. De lezingen werden dit jaar verzorgd door Steven Pinker en Rivke Jaffe. De beelden van de lezing van Steven Pinker zijn nu online terug te kijken en daarnaast is er een fotoreportage gemaakt.

This thesis describes how complex and real-world relevant analytical solutions can be found starting from a simple Nagumo problem posed on one or two-dimensional lattices.

The work described in this Thesis is focused on the assembly of oligosaccharide fragments derived from a fungal polysaccharide, galactosaminogalactan (GAG) and fragments of the exopolysaccharide Pel, generated by Pseudomonas aeruginosa.

Data theory research on the analysis on the multidimensional data

Promotores: Prof.dr. M. Franx, Prof.dr. M. Kriek (Univ. of California at Berkeley)

Contributions to the UNEP international panel for sustainable resource management

This multidisciplinary minor provides students with knowledge on how and why humans became the way they are. The minor focuses on the evolution of the species Homo sapiens from other hominin lineages and animal ancestors, and on the various factors shaping this process. Not only is human evolution of…

Leiden University’s Academic Challenge

Freshwater biodiversity has been threatened by eutrophication due to excessive nutrients in the environment. Releasing the freshwater species from such pressures requires efforts from industry and manufacturers to avoid emissions to vulnerable and high-risk regions.

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 investigate how radiation pressure can be used to influence the mechanical motion of a micro-mirror suspended from springs.

In this thesis we study quantum transport phenomena on the nanometer scale, in two classes of materials: topological insulators with induced superconductivity and graphene superlattices.

Aim: To develop and enable application of a practical, flexible, user-friendly platform to provide the scientific community with a tool to generate land surface products and its associated uncertainties and exploit these for data-intensive science.

Corruption, integrity (or a lack thereof…) and public values are near omnipresent elements in public administration and politics of all times. Cases of corrupt public officials and politicians continuously emerge. Strangely enough, however, it often remains unknown what actually occurred, how something…

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.

This project uses archaeological, literary and epigraphic evidence to investigate urban development in Roman-period North Africa, compiling this in a GIS-linked database in order to analyse the development of urban settlement spatially over time.

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

Promotor: Prof.dr. L.J. Slikkerveer

Promotores: G.A. Persoon, H.H. de Iongh

In his dissertation Michiel Hooykaas outlines the results of six empirical research projects focused at biodiversity awareness in the Netherlands, specifically people’s knowledge about animals.

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

Artin L-functions associated to continuous representations of the absolute Galois group G_K of a global field K capture a lot of information about G_K as well as arithmetic properties of K.

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

The high velocity tail of the total velocity distribution of stars provides essential insight into fundamental properties of the Galaxy.

Circumstellar discs are the reservoirs of gas and dust that surround young stars and have the potential to become planetary systems.

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

For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.

Wetland plants are distinguished from plants of other terrestrial ecosystems by their adaptations to specific habitat stresses, including waterlogged and flooding and the subsequent abundance of phytotoxic compounds.

Op deze pagina vindt u de opnames van de online This Week's Discoveries vanaf 12 mei 2020 en een lijst sprekers vanaf oktober 2015.

This thesis explores the theoretical and observational properties of distant massive galaxies that harbour active black holes in their centres and shine brightly at radio wavelengths.

Kunst en vrije tijd, Kunst en vrije tijd

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.

Promotor: P. T. de Zeeuw, Co-promotor: N. Neumayer; G. van de Ven

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

Self-assembly is an abundant process in nature and is vital to many processes in living organisms.

The radio sky harbours both galactic and extragalactic sources of arcminute- to degree-scale emission of various physical origins. To discover extragalactic diffuse emission in the Cosmic Web beyond galaxy clusters, one must image low–surface brightness structures amidst a sea of brighter compact fore-…

Optimization tasks in practice have multifaceted challenges as they are often black box, subject to multiple equality and inequality constraints and expensive to evaluate.

Creating a framework to assess the sustainability of fish farms which will set sustainability standards and give consumers information about the the sustainability and safety of their seafood.

Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling

Hot astrophysical plasma is ubiquitous in the Universe, from comets in our Solar system to the largest scale structures -- the cosmic web filaments. These hot plasmas, with the temperature of a few millions of degrees, are often observed in the X-ray wavelength range.

When observing star-forming galaxies, we are not only seeing stellar light, but we also see how this interacts with galactic gas and dust. This thesis contains studies of the stellar, nebular and dust properties of low mass star-forming galaxies.

This proposed research uses ego-documents from visual artists that were not intended for publication to reassess the scholarly debate on the demise of the Russian Avant-garde aesthetic in the twenties and early thirties of the 20th century.

Real-life processes are characterized by dynamics involving time. Examples are walking, sleeping, disease progress in medical treatment, and events in a workflow.

Er worden veel goede afstudeerscripties geschreven door de studenten die hun Leidse geschiedenisopleiding ermee afronden. Alleen de allerbeste scripties worden voorgedragen voor de Fruinprijs: de jaarlijkse prijs voor de beste onderzoeksmaster-, master- of Europaeumscriptie van de Opleiding Geschied…