In this Ph.D. thesis we study the interaction of low energy electrons with thin materials, namely layered materials (graphene, hexagonal boron nitride, molybdenum disulfide) and organic films. At these low energies the quantum mechanical wavelength of the electron wave function is in the order of a…

Promotor: W.Th.F. den Hollander, Co-promotor: F.R. Nardi

Promotor: R. Cramer

Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa

Atherosclerosis is the main underlying pathology of cardiovascular disease. Atherosclerosis is caused by an immune response which is directed against (modified) lipoproteins which accumulate in the vessel wall.

Promotor: J.W. van Holten

In this thesis, we study different curved single crystals because of the diversity of surface structures across their curvature.

Promotor: Prof.dr. T. Hankemeier, Co-promotor: Theo Reijmers

Synthesis and application of chemical biology tools to study immunomodulatory signaling lipids.

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

Het doel van het RAISE Onderzoek is om te onderzoeken hoe veerkrachtige mensen omgaan met stress. We kijken specifiek naar hoe belangrijke biologische systemen, zoals de HPA-as en het immuunsysteem, samenwerken met de hersenen en de sociale omgeving om veerkrachtig functioneren na moeilijkheden in de…

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

The research aims to explore the evolutionary adaptability of enzymes and the impact of temperature on protein evolution pathways, using M. tuberculosis β-lactamase BlaC as the object of study. Enzymes inherently embody a delicate balance between activity and stability, and the acquisition of new enzymatic…

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

Promotor: H.S. Overkleeft, Co-promotor: M. van der Stelt

Carbon dioxide capture and utilization technologies are necessary to create a truly circular economy. The electrochemical reduction of carbon dioxide to formate is an appealing carbon utilization method as it can be performed at room temperature and pressure, it only requires two electrons, and it has…

This thesis describes the development and optimization of the first molecular tools to study the enzyme PLA2G4E.

Promotor: E.F. Smets, Co-promotor: J. Geml

Promotores: T. Hankemeier; R. Berger, Co-promotor: R.J. Vreeken

Every organisms in the tree of life faces the same challenge: the length of its DNA exceeds the volume of the cell it needs to fit in. Several strategies have evolved to solve this problem, one of them being the expression of proteins that bind and organize the DNA.

All life on earth contains DNA, which is used to store biological information. Organisms compact their DNA in order for it to fit inside their cell(s).

The CC chemokine receptor 2 (CCR2), a member of the G protein-coupled receptor (GPCR) superfamily, is widely involved in autoimmune and inflammatory diseases. However, no drugs for this receptor have made it to the pharmaceutical market yet.

The spindle-assembly checkpoint (SAC) is a safety mechanism which secures accurate chromosome segregation during mitosis.

Promotores: P. Stevenhagen, E. Fouvry (Univeriste Paris Saclay)

The effective treatment of tuberculosis (TB) remains a major challenge to global health.

Streptomyces are prolific producers of enzymes and secondary metabolites, including more than 50% of all clinical antibiotics. This makes them highly attractive for medical, biotechnological, and industrial purposes.

Promotores: Prof.dr. H.P. Spaink & Prof.dr. P.C.W. Hogendoorn Co-promotor: Dr. M.J.M. Schaaf

Several single-stranded RNA viruses make use of Xrn1-resistant RNAs in their 3’ untranslated regions of their genome RNAs in order to increase their pathogenicity.

The research of the Applied Mathematics cluster is concerned with such diverse topics as dynamical systems, representation theory, differential equations and pattern recognition.

Promotores: J. Zaanen, A. Parnachev

Promotor: W.T. de Groot

The adenosine receptors are proteins that reside in the extracellular membranes of cells. Activation of adenosine receptors plays a role in many physiological and pathological processes, such as immune responses and cancers.

Promotor: J. Aarts

Streptomyces present a valuable platform for natural product discovery. Lugdunomycin is a novel angucycline-derived polyketide from Streptomyces sp QL37, with unprecedented skeleton and antimicrobial activity.

Supervisor: P.J.J. Hooykaas

The endocannabinoid receptors CB1R and CB2R are involved in a plethora of processes, and consequently are involved in many pathological conditions. Their wide distribution makes the CBRs both an interesting therapeutic target and hard to study.

One of the most important correlation functions in physics, especially in cosmology, is the energy density, which describes how much energy is present at each point in spacetime due to matter fields. A key contribution to the energy density of the primordial universe comes from gravitational waves (GWs),…

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

U kunt bij ons terecht als u vragen of zorgen heeft over de ontwikkeling van uw kind in de leeftijd van 0 tot 21 jaar.

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Wat levert een tweede taal spreken allemaal op, waarom leert de één makkelijker een tweede taal dan de ander en is een dialect ook een eerste taal? De Universiteit Leiden organiseert op 20 mei het Engelstalige publiekssymposium Twee Talen - één BeTalen, over tweetaligheid.

Het vertrekpunt van dit onderzoek is de bevinding dat het menselijk brein vatbaar is voor allerlei denkfouten en vooringenomenheden (biases), die onze percepties kleuren en onze redenaties beïnvloeden, zonder dat we dit bewust doorhebben. Integendeel, mensen hebben veelal het gevoel dat zij slechts…

Promotor: P. J. J. Hooykaas Co-promotor: B. S de Pater

Despite the fact that gold nanoparticles (GNPs) are one of the most studied nanoparticles, there is still a necessity for new approaches allowing for effective protective coating to enable wider use of GNPs in biomedical applications.

Promotores: G.A. Persoon, H.H. de Iongh

This thesis aims to enhance our understanding of galaxies by testing theoretical models of galaxy formation against observations, particularly in the cases of extreme systems which have been found to have an excess of baryonic mass in their central regions, in the form of either supermassive black holes…

Promotors: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon, Prof.dr.ir. H.H. de Iongh