In some condensed matter systems, such as the surface of a 3D topological insulator, the electrons are effectively massless and we must necessarily use the massless Dirac equation to describe them.

Congres/symposium

De astronomie begon met het bestuderen van het licht van de sterren. Deze sterren worden geboren in uitgestrekte wolken van gas en stof.

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

Global healthcare is on the verge of an antibiotic availability crisis as bacteria have evolved resistance to nearly all known antibacterials. Identifying new antibiotics that operate via novel modes-of-action is therefore of high priority.

M. Danhof, Co-promotores: J. Freijer, A. Yassen

In deep reinforcement learning, searching and learning techniques are two important components. They can be used independently and in combination to deal with different problems in AI, and have achieved impressive results in game playing and robotics. These results have inspired research into artificial…

The subject of this thesis, ‘Approach to Markov Operators on Spaces of Measures by Means of Equicontinuity’, combines an analytical and probabilistic approach to Markov operators.

This thesis describes the role of pollution, specifically neonicotinoid insecticides, as an actor of the ongoing biodiversity decline.

Lysosomal glycosidases are acid hydrolases that fragment glycoconjugates in lysosomes.

Low-carbon (LE) technologies have a significant potential to reduce the total carbon emissions in China.

Anthropogenic noise has been shown to affect marine animals in various ways, this may have fitness consequences at individual and population level. This thesis aims to increase insight into the quantification of sound-induced behavioural responses that are relevant to fitness, and into factors that…

This collection of papers was compiled in celebration of the remarkable academic career of Professor Wil Roebroeks, who has established himself as one of Europe’s leading figures in Palaeolithic archaeology over the past three decades and founded the Human origins research group at Leiden University…

Hoe kunnen studenten in mbo- en hoger onderwijsinstellingen het beste worden ondersteund in hun studiekeuze en studieloopbaan met het oog op soepele in- en doorstroom in opleiding en werk?

The soil ecosystem consists of the largest reservoir of biodiversity on Earth.

Heeft het gebruik van medicijnen en drugs invloed op mijn persoonlijkheid? Wat zijn de (langere-termijn) gevolgen van de leerpil 'Ritalin'? Kunnen (party)drugs en medicijnen met rijden in het verkeer samengaan? Wat doen verslavende stoffen met mijn brein?

The thesis mainly contributes to the characterization of Majorana fermions as they appear in the Condensed Matter context.

Met ingang van 1 april 2018 is Erik Danen benoemd tot hoogleraar Cancer drug target discovery bij het Leiden Academic Centre for Drug Research (LACDR). Zijn vakgebied is celbiologie van kanker, waarin hij zich richt op de achterliggende mechanismen bij uitzaaiingen en resistentie voor behandelingen.

The effects of anthropogenic noise on interactions between predators and their prey are still little understood.

Op 18 september 2019 verdedigde Huw Llewellyn zijn proefschrift 'An Institutional Perspective on the United Nations Criminal Tribunals: Governance, Independence and Impartiality'. Het promotieonderzoek is begeleid door promotoren prof.dr. N.M. Blokker en prof.dr. L.J. van den Herik.

The use of N fertilizers has increased worldwide in the past century. While this increased input of N has increased food productivity, it has also contributed to decreases in biodiversity, soil quality and environmental health, including increases in greenhouse gas emissions.

Nature uses a special class of histone proteins, histone variants, to modulate the properties of chromatin at defined genomic locations.

This thesis focuses on amyloid proteins, a class of proteins that convert into amyloid fibrils.

Promotor: G.R. de Snoo, Co-promotores: M.G. Vijver, J.P.M. Vink

The research described in this thesis combines the latest insights in lysosomal function with lysosome centred cell signalling.

Triple-negative breast cancer (TNBC) is a subtype of breast cancer characterized by limited treatment options and unfavorable clinical outcomes. Therefore, the research described in this thesis focused on the exploration of novel targeted therapies for TNBC.

Snelle en goedkope chips die extreem kleine hoeveelheden vloeistof (microfluïden) analyseren vormen de kern van gepersonaliseerde gezondheidszorg. Maar het ‘laboratorium op een chip’ is nog niet effectief genoeg. Dr. Paul Vulto en zijn onderzoeksteam ontwikkelden een techniek die het gebruik van microfluïdische…

This monograph focuses on clustering of objects in high-dimensional data, given the restriction that the objects do not cluster on all the attributes, not even on a single subset of attributes, but often on different subsets of attributes in the data.

The Research Training Group “Byzantium and the Euro-Mediterranean Cultures of War” invites scholars to submit paper proposals for a series of sessions on “Perceptions of Just War in the Middle Ages” at the IMC 2025. These sessions aim to explore the diverse theological, philosophical, legal, and cultural…

This thesis tackles the difficulty of predicting the liver’s clinical response to novel therapies, a challenge arising from interspecies differences and limitations of existing in vitro models.

Promotor: Prof.dr. J.M. van Ruitenbeek, Prof.dr. R.M. Tromp

Including modelling as part of software development appears to have various benefits.

Songbirds as vocal learners learn their songs and song preference from social tutors⁠. Tutor choice for both song and preference learning are important to characterize for understanding individual learning performance and cultural transmission of song⁠.

Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)

Building a Deep Cross-media Transfer Network to extract visual relations that relieve the problem of insufficient training data for visual tasks.

Spectroscopic studies on fluorescent single molecules in organic condensed matter does not only provide information about the molecule itself, but also its near environment. By suppression of phonon-induced broadening of spectral lines through cooling to low temperatures, small changes in the spectral…

To meet the rising demand for minerals driven by the global shift to clean energy technologies, ensuring responsible and resilient supply chains is critical. Minerals like cobalt, lithium, and nickel for batteries, neodymium and zinc for wind turbines, and indium for solar panels are essential.

Promotor: Prof.dr. H.J.A. Rottgering

Promotor: G.R. de Snoo, W. Kustiawan, Co-promotor: H.H. de Iongh

Promotor: B. van de Water

Promotor: Prof.dr. M. Ubbink, Co-promotor: G. Siegal

Solute carrier (SLC) transporters are a large and diverse class of relatively understudied transmembrane proteins.

Triple-negative breast cancer (TNBC) constitutes a small subtype (~15%) of breast cancer, but causes the majority of breast cancer-related deaths.

Oorlog en vrede bestuderen. Met de oorlog in Oekraïne is het onderwerp actueler dan ooit. In september start een nieuwe track van de MSc Crisis and Security Management (CSM): War and Peace Studies. Programmadirecteur van CSM, Ernst Dijxhoorn, vertelt over deze nieuwe opleiding, de totstandkoming en…

Frans Osinga, bijzonder hoogleraar War Studies verbonden aan ISGA, vertelt in de Volkskrant over de groeiende aandacht voor oorlog in de collegezalen.

The cannabinoid receptor type 2 (CB2R) is associated with several inflammatory diseases with an unmet medical need (e.g. Alzheimers, multiple sclerosis, reumatoid arthritis). Development of new chemical biology strategies to study this protein is essential to aid future development of drugs for these…

Promotores: A.P. IJzerman, H.W.T. van Vlijmen

Promotor: Prof.dr. S. Haring

In this thesis, I targeted the orchid genus Lepanthes, one of the six genera of angiosperms that surpasses 1,000 species in the Neotropics, as a study model to investigate the evolutionary processes that promoted species diversifications.