Business Process Model and Notation (BPMN) has become the standard for business processes diagrams.

Promotor: Prof.dr. T. Hankemeier, Co-promotor: Theo Reijmers

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.

We gingen het water op! Op zaterdag 30 augustus 2025 gingen onze studenten samen met Plastic Soup Surfer Merijn Tinga de Leidse grachten op om te suppen én afval uit het water te vissen.

De Cleveringa lezing Den Haag werd dit jaar gehouden op 26 november met Carel Stolker en Suzanne Bloks.

Promotores: Prof.dr. C.U. Keller, Prof.dr. H.C. Gerritsen

Promotor: K.H. Kuijken

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

Nanoparticles can be used as delivery systems for both small molecules and macromolecules such as proteins, peptides or oligonucleotides. This thesis focuses on the use of liposomes, nanometric vesicles formed by a lipid bilayer enclosing an aqueous core. Liposomes are highly versatile delivery syst…

Promotor: G.R. de Snoo Co-promotor: C.J.M. Musters

Lezing, Leiden University Nationalism Network

Met de krachtige elektronenmicroscopen van NeCEN bestuderen we afwijkingen aan cellen van bloedvaten bij hart- en vaatziekten, de wisselwerking tussen ziekteverwekkers en gastheren bij infectieziekten, moleculaire processen die kanker veroorzaken, de interactie tussen geneesmiddelen en target-eiwitten.…

Ben jij een professional die een master wil doen? En heb jij een relevante achtergrond, zoals een HBO master of WO opleiding en enige jaren werkervaring? Dan kun je ervoor kiezen om je kennis in Cyber Security te verbreden en te verdiepen.

Promotor: Prof.dr. L.J. Slikkerveer

The next generation of high-contrast imaging instruments on space-based observatories requires sophisticated wavefront sensing and control in addition to a high-performance coronagraph.

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…

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.

Supervisor: S.F. Portegies Zwart Co-Supervisor: A.G.A. Brown

Promotor: W. Jaffe, Co-promotor: K. Meisenheimer

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

Particles are omnipresent in biopharmaceutical products. In protein-based therapeutics such particles are generally associated with impurities, either derived from the drug product itself (e.g. protein aggregates), or from extrinsic contaminations (e.g. cellulose fibers).

Modeling and analysis of cyber-physical systems are still challenging. One reason is that cyber-physical systems involve many different parts (cyber or physical), of different nature (discrete or continuous), and in constant interaction via sensing and actuating.

Promotores: Prof.dr. H. van Veen & Prof.dr. W. de Boer (Wageningen University)

At the largest scales, two ingredients dictate the distribution of matter in the Universe. The first is dark matter, acting as an invisible scaffolding held together by gravitational forces.

This thesis focusses on the temperature structure in protoplanetary disks. The relation between structures seen in the dust and gas-phase molecules is investigated.

Promotor: Prof.dr. A. Achucarro

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…

Alumni-activiteit, New York

Dit boek neemt je stapsgewijs mee in het schrijven van een scriptie, met (voornamelijk) een focus op experimenteel onderzoek, dat het meest veel voorkomt. Door de stappen van experimenteel onderzoek in chronologische volgorde op te splitsen en bij elke stap tips te geven, hopen de auteurs enig houvast…

What are the pressing issues of our time, and how can different disciplines come together to address them? Studium Generale and Leiden University College (LUC) present the Global Challenges series: events that bring together researchers from LUC and experts from other disciplines to tackle a shared…

In this course, we will focus on the fascinating history of the Arabic Medieval World. We will take you on a journey through the Middle Ages. All along, we will present you with historiographical debates and dilemmas and travel back and forth in time explaining to you how events of the past affected…

In this thesis, we extend the concept of null models as canonical ensembles of multi-graphs with given constraints and present new metrics able to characterize real-world layered systems based on their correlation patterns.

Promotor: M. Franx, Co-Promotor: I.F. Labbé

Promotores: J. Kok, M. Chaudron (Chalmers University)

Online scriptiebegeleiding

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The marine shipping industry is one of the strongest emitters of nitrogen oxides (NOx), a pollutant detrimental to ecology and human health. Over the last 20 years, the pollution produced by power plants, the industry sector, and cars has been decreasing.

Het College van Bestuur van Universiteit Leiden heeft Jan Pronk herbenoemd als directeur bedrijfsvoering van de Faculteit der Archeologie. Pronk begint op 1 maart aan zijn tweede termijn (2026–2029).

Promotor: Prof.dr. C.U. Keller

Deelproject van

Promotor: T. Hankemeier, Co-promotor: R.J. Vreeken

Integrins play an essential role in multicellular life by connecting cells to the extracellular matrix.

The experiences of ethnic ‘Other’ females have – until recently – been widely overlooked in the study of sport. There continues to be a need to produce critical scholarship about ethnic 'Other' girls and women in sport and physical culture, in order to represent their complex, multifarious and dynamic…

Make more fluid: In condensed matter systems, electrons can acquire unusual properties from their interaction with the atomic lattice.

De Faculteit der Wiskunde en Natuurwetenschappen streeft naar impact van haar onderzoek en onderwijs op de samenleving. Daarvoor werkt de faculteit in binnen- en buitenland samen met andere universiteiten en instituten, maatschappelijke partners, het bedrijfsleven én met het brede publiek.

Tentoonstelling

Promotor: H.J.A. Röttgering, Co-promotor: G.K. Miley