This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).

Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

This dissertation consists of two parts, with the common theme

This thesis describes the genetic and prokaryotic diversity of giant barrel sponges.

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

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

This thesis is about cosmological inflation and its relation to observations.

Promotores: S.J. Edixhoven, F. Andreatta

What is the environmental impact of different waste collection systems across Europe? How can the collection be improved when considering collection, sorting, and treatment, as well as use options for secondary materials?

We have conducted a full spectral line survey of the 3-13 micron region of two massive protostars, AFGL 2591 and AFGL 2136, for the first time at high spectral resolution.

Promotores: Prof.dr. G.A. Persoon & Prof. dr. H.H. de Iongh

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

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.

This thesis studies the geometry of representation varieties and character stacks. These are spaces parametrizing the representations of a finitely generated group, typically the fundamental group of a compact manifold, into an algebraic group G.

SEAtrans: an interdisciplinary research project that aims at studying the dynamics and processes of transitions in society-nature interactions in Southeast Asian societies.

Promotie

Lezing

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 thesis describes the antimicrobial discovery strategy developed in our group, the den Hertog Group at the Hubrecht Institute. It includes a cultivation-based screening approach for novel antimicrobial agents from the source of fungi, and a bacterial time-lapse imaging approach for antimicrobial…

Promotor: R. Gill, Co-promotor: P. Massart

Promotie

Donkere materie vormt ongeveer tachtig procent van de totale massa in het heelal. Toch weten we nog steeds niet precies waarvan het gemaakt is. Astronoom Pavel Mancera Piña gaat op zoek naar antwoorden. Met een Veni-subsidie van NWO en de meest geavanceerde telescopen, waaronder de James Webb Space…

The NWO-funded Vidi project “American foreign policy and liberalism” challenges the idea that the United States has created and sustained a “liberal international order” since World War II. It instead explores the ways in which illiberal ideologies – such as those underpinning racial hierarchy at home…

Promotor: Prof.dr. S.F. Portegies Zwart

Rottgering

In this thesis, I study the formation of large-scale structure and the physics of particle acceleration at large scales (~Mpc).

In this thesis new methodologies are developed for the detection and systematic study of radio sources in the early universe. This allows us to gain a deeper understanding of the formation and evolution of galaxies, the activity of supermassive black holes, and the final phase transition of our universe:…

Promotor: Bas Edixhoven, Promotor: Qing Liu

Didactiek

This thesis consists of three chapters. Each chapter is on a different subject. However, all three chapters address issues that arise in counting arithmetically interesting objects.

Promotor: S.J. Edixhoven, L.D.J. Taelman

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.

The formation of stars and planets happens over multiple scales, which can interact. In particular, planet formation happens in the dense, complex environment of star forming regions.

Promotie

A substance flow analysis, covering about 99 % of the flows of chlorinated substances in the Netherlands.

This thesis consists of three chapters, the first two of which concern division points of elements of the multiplicative group of a number field.

This minor combines the domains of design thinking and technology-enhanced learning and teaching with interdisciplinary group work.

Glucocorticoids are potent anti-inflammatory drugs widely used clinically to treat various inflammatory and immune conditions. However, two main clinical problems limit their use. GCs trigger severe side effects and they induce acquired glucocorticoid resistance, especially during chronic systemic treatment…

Promotor: J. Zaanen

The thesis addresses the long-term dynamical evolution of hierarchical multiple systems.

Sterrewacht Leiden is het sterrenkundig instituut van de Faculteit der Wiskunde en Natuurwetenschappen van de Universiteit Leiden.

GLOBOX is a spatially differentiated multimedia fate, exposure and effect model. It is used for the calculation of spatially differentiated LCA characterisation factors on a global scale.

Promotie

Promotie

Lees waar je als student van de Universiteit Leiden terecht kunt voor steun als je die nodig hebt en welke afspraken er gelden voor sociale veiligheid in de online leeromgeving.

In photoactivated chemotherapy (PACT), a biologically active compound is caged by a light-cleavable protecting group.

We show that Kirchhoff ’s law of conservation holds for non-commutative graph flows if and only if the graph is planar. We generalize the theory of (Euclidean) lattices to infinite dimension and consider the ring of algebraic integers as such a lattice.

Promotor: S.J. Edixhoven Co-promotor: L. van Geemen, P. Parent