This thesis consists of two main parts. The first part (Chapters 2 and 3) deals with a class of Markov process called Quasi-Skipfree (QSF) processes.

This thesis is a collection of theoretical works aiming at adjusting quantum algorithms to the hardware of quantum computers.

Promotor: Prof.dr. E.F. Smets, Co-Promotor: L.W. Chatrou

The haplolepideous mosses (Dicranidae) comprise about 4000 species distributed over a wide range of habitats, with great gametophytic and sporophytic morphological variation. Their monophyly is well supported by the results of several molecular phylogenetic studies, which shed light on their relationships…

Throughout the history of computer science, a major challenge has been how to assert that software is free of bugs and works as intended. Software bugs can lead to serious negative impacts on any software system. Throughout the main body of the thesis, we implemented a series of studies on exploring…

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

The overall theme of this thesis is to complement the electrochemical data acquired in fuel cell research with in situ X-ray photoelectron spectroscopy (XPS) and soft X-ray absorption spectroscopy (XAS).

Sorghum (Sorghum bicolor) is a major cereal crop that millions of subsistence farmers in Sub-Saharan Africa (SSA) rely on. However, the scourging impact of the root parasitic weed Striga (Striga hermonthica, a.k.a. “witch-weed”) has remained a major constraint hampering the productivity of sorghum in…

In this thesis we study bistable reaction-diffusion equations on lattice domains.

Promotor: S.M. Verduyn Lunel, Co-promotor: S.C. Hille

n this PhD thesis, the recombination of different atomic lattices in stacked 2D materials such as twisted bilayer graphene is studied. Using the different possibilities of Low-Energy Electron Microscopy (LEEM), the domain forming between the two atomic layers with small differences is studied.

Promotor: Prof.dr. M.L. van Heck, Co-Promotor: B.P. Tighe

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.

Het gebruik van ‘Big data’ is niet meer weg te denken binnen het wetenschappelijk onderzoek. Voor dit onderzoek maken we gebruiken van diverse grote databestanden.

Organisms often need to adapt more efficiently and devise new strategies for surviving difficult ecological circumstances.

We study the interplay of topology and geometry with chirality for several passive and active systems, employing both analytical and numerical methods.

This thesis is devoted to an in-depth examination of the various effects of disorder in the cuprate high-temperature superconductors.

Promotor: Prof.dr. J. den Hertog

Promotor: Prof.dr. C.W.J. Beenakker

Hoe kunnen we de uitvoering van EU beleid begrijpen en welke uitdagingen spelen daarbij een rol?

Promotor: J. Zaanen, Co-Promotor: V. Juricic

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.

De nieuwbouw voor de Faculteit der Wiskunde en Natuurwetenschappen is een belangrijke mijlpaal voor de Universiteit Leiden en de faculteit in het bijzonder. In drie fasen wordt een nieuw gebouw gerealiseerd. De eerste fase van het nieuwe gebouw is in 2016 in gebruik genomen en beslaat 45.000m2. Het…

Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).

Parkinson's disease is the second most common neurodegenerative disease in the world. One of its symptoms is the loss of dopaminergic neurons in the substantia nigra pars compacta.

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

Fungal food spoilage often starts with a contamination with spores. Experimental data strongly indicate the existence of subpopulations of spores with different levels of resistance to preservation methods.

Protein–protein complexes are formed via transient states called encounter complexes that greatly influence the formation of the stereospecific complex.

Promotor: Jan van der Greef; Co-promotors: Mei Wang; Eduard van Wijk

The chemical and structural heterogeneity of toxoid vaccines makes their analysis challenging. However, detailed insights on a molecular level can be obtained by mass spectrometry.

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

The sequence-dependence of biomolecular interactions involving nucleic acids and proteins is essential for numerous processes inside the cell. Insights into the underlying molecular mechanisms have been obtained using various biochemical and biophysical methods on two different levels — bulk and sin…

This thesis is concerned with the constitution of chiral responsive matrix assemblies that may undergo light-driven conformational changes and self-select vibrations to develop vibronic states for driving semi-classical coherent transfer with nearly 100% yield in a lossless NCAP process.

Promotor: J.M. van Ruitenbeek, Co-Promotor: S.J. van der Molen

The elementary excitations of magnets are called spin waves, and their corresponding quasi-particles are known as magnons. The rapidly growing field of Magnonics aims at using them as information carriers in a new generation of electronic devices, (almost) free of electric currents.

The aim of the research presented in this thesis was to develop new methods forchallenging systems in liquid-state NMR using paramagnetic effects generated by thetwo-armed probe CLaNP-5.

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

In my research, I used a comparative wood anatomical approach to address wood evolution of the (largely) tropical flowering plant families Apocynaceae and Sapotaceae.

Promotor: E. Bouwman, Co-Promotor: S. Bonnet

De Leergang Public Affairs biedt een sterke basis voor professionals in de overheid, het bedrijfsleven of maatschappelijke organisaties die actief zijn in het beïnvloeden van besluitvorming en beleid.

Het kwantificeren van lichamelijke activiteit (met behulp van versnellingsmeters) en het combineren van de frequentie en intensiteit van activiteiten met gezondheidsgegevens (hersen-MRI, traditionele klinische parameters en metabolomics) is van het grootste belang om mobiliteit en gezondheid bij oudere…

In condensed matter systems electron-electron interactions, negligible in everyday metals, can dramatically alter the electronic behavior of the system. Examples of such altered behavior include high-temperature superconductivity and modulation of the electron density.

Van intern draagvlak naar maatschappelijke impact via strategische belangenbehartiging.

An interdisciplinary collection of the best international scholarship on Muslim youth.

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

Thermodynamics is one of the founding scientific pillars that has helped us better understand heat engines, biology, ecosystems, and even black holes. While it fundamentally describes large systems by examining the bulk behavior of their constituents, it is anchored in the statistical equivalence of…

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.

Het onderzoek van de afdeling Economie is ondergebracht bij meerdere facultaire programma's. Het onderzoek van de afdeling richt zich thans met name op sociaal-economische vraagstukken, rechtseconomie en fiscale economie.

Karwan Fatah-Black, expert Nederlandse koloniale geschiedenis, schreef de tekst op een monument ter herinnering aan het slavernijverleden dat op 1 juli werd onthuld in Hoofddorp. De officiële afschaffing van de slavernij was 155 jaar geleden op 1 juli 1863. De jaarlijkse nationale herdenking van het…