Novel entities may pose risks to humans and the environment. The small particle size and relatively large surface area of micro- and nanoparticles (MNPs) make them capable of adsorbing other novel entities, leading to the formation of aggregated contamination.

Despite the history of studies on methanol formation from CO2, the dominant elementary reaction steps that constitute the chemical mechanism for this catalyzed process are not determined.

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.

In this thesis I highlight the applications of Oxford Nanopore Technologies (ONT) sequencing. This technique is a relatively new approach in the sequencing field, where nanopores are embedded in a membrane, DNA molecules are pulled through nanopores and an electrical current serving as the sequencing…

Promotor: Prof.dr. I.A.G. Snellen, C.U. Keller

Stochastic resetting is simple enough to be approached analytically, yet modifies stochastic processes in a non-trivial way.

Promotores: Prof.dr. G.W. Canters, Prof.dr. T.J. Aartsma

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.

Majorana fermions in superconductors are the subgap quasiparticle excitations that are their own antiparticles.

Innovation plays an essential role in firms' competitiveness and long-term success. It varies from different types, ranging from run-of-the-mill innovation that brings incremental changes to existing technologies to radical innovation that breaks from existing trajectories.

The work done during this PhD research, aims to investigate the effect of tidal heatingin the observability of extra-solar satellites around exoplanets.

Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.

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

Promotores: Prof.dr. B.R. Katzy, Prof.dr. K. Sailer (Munich University)

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…

Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).

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.

The ultimate goal of cosmologists is to find a cosmological model able to explain the current observational data.

Promotor: R. Cramer

Promotor: Thomas Hankemeier, Co-promotores: Heiko van der Linden, Paul Vulto

My work focuses on a class of astronomical objects called protoplanetary disks.

Dit onderzoek gaat over het gebruik en de interpretatie van hoeveelheidsuitdrukking in verschillende talen, met name in relatie tot telbaarheid.

Dit project gaat over (1) hoe de strategieën die gebruikt worden om epistemiciteit uit te drukken verschillen in hun interpretatie en gebruik; (2) welke strategieën kunnen gecombineerd worden en tot welke effecten dit leidt; (3) wat de uitdrukking van (verschillende aspecten van) epistemiciteit ons…

Dit onderzoek gaat over hoe automatische gebarentaalherkenningstechnologie verder ontwikkeld kan worden om statische beelden en tekstuele beschrijvingen van gebaren te analyseren.

The way organisms develop from the initial single-cellular state to a complex final assembly like the human body, and how the final body is maintained throughout life, is one of the greatest mysteries and it’s understanding one of the biggest scientific challenges.

This thesis explores Breaking of Ensemble Equivalence (BEE) in random graph models by examining the spectral properties of adjacency matrices. The goal is to identify spectral characteristics that differentiate random graph ensembles, enhancing the understanding of complex network structures and beh…

Over the last three decades, the discovery of exoplanets has revealed the boundless variety of worlds beyond our own Solar System⁠. Majority of planetary systems contain short-period planets that are larger than Earth but smaller than Neptune⁠.

This thesis investigates Open-world Continual Learning (OWCL), a learning paradigm designed for intelligent systems operating in non-stationary environments with persistent exposure to unknown data.

Op 25 maart 2021 vindt dit online seminar plaats van 10.15-12.00 uur aan de Örebro Universitet in Zweden. Jannemieke Ouwerkerk, hoogleraar Europees Strafrecht aan het Instituut voor Strafrecht en Criminologie, is een van de sprekers.

Op 18 maart 2016 presenteerden Pieter van Cleynenbreugel en Maarten Aalbers recente ontwikkelingen in het Unierecht tijdens het Internationale Colloquium “EU Law: Union Developments and Actions”.

Onlangs is bij Edward Elgar Publishing het boek 'Constitutional Preambles: A Comparative Analysis' verschenen. Het boek is onderdeel van de serie 'Elgar Monographs in Constitutional and Administrative Law’.

Promotores: H.W. Lenstra, K. Belabas (University of Bordeaux)

Promotor: J.W. van Holten

This thesis investigates how galaxies form and what diversifies the evolutionary histories of galaxies.

The development process of any software has become extremely important not just in the IT industry, but in almost every business or domain of research.

It is an established fact that the Standard Model has to be extended to explain the so-called Beyond the Standard Model (BSM) phenomena: dark matter, matter-antimatter asymmetry of the Universe and neutrino flavour oscillations.

Systems with local constraints is a new finding in recent researches on complex systems. The heterogeneous spatial interactions and the temporal dependencies among those numerous units make it difficult to describe by traditional statistical physics.

This PhD-thesis analyses the relationship between the parties’ choices in the CPB Netherlands Bureau for Economic Policy Analysis’ assessments of the election manifestos and coalition agreements over the period 1986-2017, and tries to explain this relationship.

‘De prikkels in de wetenschap zijn net zo pervers als bij de banken’, vindt UMC-bestuurder en immunoloog Frank Miedema. Staan andere belangen goed wetenschappelijk onderzoek inderdaad in de weg? Op maandag 24 maart geeft prof. Miedema een openbare lezing over ‘Science in Transition’.

Alumnus Maarten Asscher (60) is mentor van de maand. Hij studeerde Rechtsgeleerdheid in Leiden en was achtereenvolgens literair uitgever, topambtenaar bij OCW en directeur van Athenaeum Boekhandel. Wordt hij jouw mentor?

Op 22 maart 2020 overleed emerita professor Turkse taal en cultuur Barbara Flemming ten gevolge van hartfalen: een groot gemis voor haar partner Dr. Sybille Duda, familie, vrienden en vakgenoten.

Een masteropleiding vergroot je kansen op de arbeidsmarkt en opent deuren naar uitdagende functies. Na je driejarige bachelor kun je direct doorstromen naar een één- of tweejarige master aan de Universiteit Leiden of een andere instelling.

Een masteropleiding vergroot je kansen op de arbeidsmarkt en opent deuren naar uitdagende functies. Na je driejarige bachelor kun je direct doorstromen naar een één- of tweejarige master aan de Universiteit Leiden of een andere instelling.

Een masteropleiding vergroot je kansen op de arbeidsmarkt en opent deuren naar uitdagende functies. Na je driejarige bachelor kun je direct doorstromen naar een één- of tweejarige master aan de Universiteit Leiden of een andere instelling.

In samenwerking met Rijksmuseum Boerhaave, naar aanleiding van de tijdelijke tentoonstelling 'Dichter bij het zwarte gat', te zien t/m 5 januari 2025.