In this thesis, we use low-frequency and high-frequency radio observations to address the following questions regarding quasars: is the radio loud/quiet quasar dichotomy real?

A modern ship design process is subject to a wide variety of constraints such as safety constraints, regulations, and physical constraints.

Combinatorial games are games for two competing players, moving in a turn-by-turn fashion, in which there is no chance nor hidden information⁠. Chess, checkers and the simpler tic tac toe are well-known examples of this class of games, as well as game of go⁠.

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.

The experiments described in this thesis employ local lentiviral knockdowns in brain areas of female zebra finches followed by behavioural assays consisting of preference and Go/Nogo tasks.

Promotor: C.J. ten Cate

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

Promotor: G.J. Kramer Co-Promotor: E.G.M. Kleijn

Bacterial chemosensory arrays are protein assemblies that are the key structural and functional component for motile bacteria to sense their internal or environmental chemical signals.

Promotor: Prof.dr. B.R. Katzy, Prof.dr. H.J. van den Herik, Prof.dr. G.H. Baltes (University of Applied Sciences Konstanz)

Bicarbonate buffer is largely found in nature due to its ability to regulate pH variations around neutral values. As the pH changes, so does the speciation of the buffer.

Promotor: S.M. Verduyn Lunel, Co-Promotor: O.W. van Gaans

This thesis considers multi-prover commitment schemes whose security is based on restrictions on the communication between the provers.

All crested and marbled newts (the genus Triturus) suffer from an unusual genetic abnormality, called a balanced lethal system, that kills exactly half of their offspring. How can a trait so disadvantageous have survived millions of years of natural selection?

Promotor: P.D. Grünwald

Promotor: J.P. Abrahams, Co-promotor: T. Grüne

Promotor: M. Danhof, Co-promotor: E.C.M. de Lange

LCA has become an important method to study environmental impacts of human activities. Still, there are several methodological issues in LCA that can adversely affect the results reliability.

Astronomical observations of cold regions in the universe show a rich inventory of ices. Part of these ices may end up on planets like our own, but in that journey they will be exposed to considerable amounts of radiation.

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

PNEC-pro is a user-friendly screening tool for professionals dealing with the assessment of surface water quality. The tool calculates local, watertype specific no-effect concentrations (PNEC) of copper, lead, nickel and zinc based on biotic ligand models (BLMs).

This thesis deals with properties of Jacobians of genus two curves that cover elliptic curves.

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.

Promotor: Prof.dr.ir. E. Deprettere

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

The demand for neodymium-iron-boron (NdFeB) magnets is rapidly growing, while the neodymium supply chain is under pressure. Recycling can alleviate these issues. This thesis investigates the potential for deploying novel magnet recycling technologies and their environmental consequences.

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…

A key step in the synthesis of oligosaccharides and glycoconjugates is the formation of the glycosidic bond.

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.

This dissertation presents the results of the importance of creativity for ICT-students of Dutch universities of applied sciences (in Dutch: hogescholen), and the functioning of training courses that aim to promote creative abilities is highlighted.

Monoacylglycerol lipase (MAGL) is the principal enzyme responsible for hydrolysis of the endocannabinoid 2-arachidonoylglycerol (2-AG). MAGL inhibition provides several potential therapeutic opportunities, including anti-nociceptive, anti-inflammatory and anti-cancer activity.

In today's volatile market environments, companies must be able to continuously innovate. In this context, innovation does not only refer to the development of new products or business models but often also affects the entire organization, which has to transform its structures, processes, and ways of…

Systems are called real-time systems, if the correctness of the system does not only depend on the correctness of the system output but also on whether the output is delivered on time.

Een nieuw kabinet, brandhaarden in de wereld en natuurlijk veel wetenschap: dit zijn de vijf verhalen van de Universiteit Leiden die jullie graag lazen in 2024.

Hoogleraar Algemene Geschiedenis Wim van den Doel heeft de Boerhaave Biografieprijs 2024 gewonnen. Van den Doel krijgt de prijs voor zijn boek 'Snouck. Het volkomen geleerdenleven van Christiaan Snouck Hurgronje'.

Op 10 en 11 april a.s. vindt het jaarlijkse landelijke evenement NWO ICT.Open 2024 plaats in het Beatrix Theater in de Jaarbeurs in Utrecht. Het evenement brengt wetenschappers van elke ICT-discipline and bedrijven samen om van elkaar te leren, ideeën uit te wisselen, en te netwerken.

My colleagues and I have been devastated to learn that our good colleague and friend Stefan Landsberger (born 1955) passed away unexpectedly, on 26 September 2024. Stefan had been a fixture of China Studies in the Netherlands, where he had been Associate Professor of contemporary Chinese History and…

Op vrijdag 12 januari 2024 stierf, op 72 jarige leeftijd, onze gewaardeerde collega Mehmet Emin Yildirim. Hij is in Turkije begraven. Op 1 september 1986 is hij in dienst gekomen bij de toen nog (Rijks) Universiteit Leiden; op 25 december 2018 ging hij met pensioen.

Tijdens de uitreiking van de Christiaan Huygensprijs op 16 oktober, heeft wiskundige Rosa Schwarz een eervolle vermelding ontvangen. Schwarz, voormalig promovendus van het Mathematisch Instituut, ontving de vermelding voor haar proefschrift ‘Logarithmic approach to the double ramification cycle’.

De decanen (voorzitters van de faculteitsbesturen) vormen onder voorzitterschap van de rector magnificus de Raad van Decanen (RvD).

Van academische vrijheid tot medische doorbraken en digitale veiligheid: tijdens de 451ste dies natalis van de Universiteit Leiden reflecteerden sprekers op de rol van de universiteit in een wereld vol maatschappelijke en geopolitieke spanning.

The University of Trento hosts the biennial conference of the International Reynard Society, taking place on September 25-28 2024. Deadline for paper/session submissions: December 31.

Op 14 februari 2024 overleed prof.dr. Theodoor Marius van Leeuwen, emeritus hoogleraar Remonstrantse Theologie aan de Universiteit Leiden. Het emeritaat van Marius viel min of meer samen met het verdwijnen van de Leidse Theologische Faculteit. Het Remonstrants Seminarium, dat in 1873 vanuit Amsterdam…

Hoewel de officiële start van het academisch jaar nog even op zich laat wachten, verwelkomde het Leiden University College The Hague (LUC) deze week de Class of 2024 op de Campus aan het Anna van Bueren plein. Het nieuwe cohort van 203 studenten zal zich de komende drie jaar verdiepen in een scala aan…

Tot onze grote droefheid is op vrijdag 13 september 2024 Victor Halberstadt overleden. Hij was sinds 1974 als hoogleraar Openbare Financiën verbonden aan de Afdeling Economie van de Faculteit der Rechtsgeleerdheid van de Universiteit Leiden; de laatste jaren als emeritus hoogleraar. Daarnaast bekleedde…

Religious Studies at the University of Amsterdam organises a postgraduate seminar on current issues in religious studies and western esotericism. You can find the programme for the year 2023-2024 below.

De onderzoeksgroep Cyber Security Governance bestudeert de impact van moderne technologie op governance, soevereiniteit, wetshandhaving en internationale betrekkingen, en levert toonaangevend academisch onderzoek en beleidsinzichten.

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.