Promotie

Early time-resolved experiments by Frauenfelder on the ensemble of the kinetic rebinding of CO to myoglobin molecules resulted in a stretched exponential relaxa-tion due to a very large spread of the reaction rates of individual molecules.

Barrier function is the natural role of the skin. The lipid matrix present in the outermost layer of the skin, the stratum corneum is important for this function.

This thesis describes a study from both a theoreticaL and an experimental point of view.

Understanding how galaxies form, interact, and evolve comes largely from comparing theory predictions with observational data. Numerical simulations of galaxies provide the most accurate approach to testing the theory, as they follow the non-linear evolution of gas and dark matter in great detail and…

Promotor: Prof.dr. M.K. Richardson

Arithmetic geometry concerns the number-theoretic properties of geometric objects defined by polynomials. Mathematicians are interested in the rational solutions to these geometric objects.

Neurodegenerative diseases pose a large medical and societal challenge. The etiology of these diseases is still poorly understood, which makes drug discovery for these diseases difficult.

Promotor: Prof.dr. B.R. Katzy

Promotor: M. Danhof Co-promotor: O.E. Della Pasqua

Promotor: Jaap Brouwer, Co-promotor: Remus Th. Dame

Marine sponges are important members of reef ecosystems, as they play ecological roles that are essential for the health of the reef.

Promotor: J. A. Bouwstra

Studievoorlichting

Hieronder vind je een overzicht van de publicaties van LAPP.

Van de verspreiding van zwerfafval tot welke talen er in Leiden en Den Haag gesproken worden: meer dan 50 interessante vragen zijn het afgelopen jaar ingestuurd voor het Citizen Science Project van de Universiteit Leiden. Niet één maar twee Citizen Science-onderzoeksprojecten zijn dit jaar van start…

Food security is challenged by a growing global population and by climate change. Drought and soil salinity are considered the most important ones that inhibit crop yield and distribution. Worryingly, climate change is predicted to increase not only their frequency and severity, but also their co-occurrence,…

This thesis focuses on amyloid proteins, a class of proteins that convert into amyloid fibrils.

Understanding how chemical complexity emerges during star formation requires connecting molecular material preserved in interstellar ices with that observed in the gas phase after protostellar heating begins.

Op 29 Juni 2017 heeft Doris Dull-Zessner haar proefschrift “Value Congruence in a Multinational Corporation” verdedigd. De supervisors zijn prof.dr.mr. J.A.A. Adriaanse and prof.dr. J.I. van der Rest.

Veel docenten in het voortgezet onderwijs houden rekening met verschillen tussen leerlingen. Uit het promotieonderzoek van Saskia Stollman (ICLON) blijkt dat zij hierbij ruimte om te experimenteren en ondersteuning van de school(leiding) nodig hebben.

Wout Broekema benadrukt dat organisaties niet alleen leren van crises, maar ook vergeten, waarbij cruciale kennis en werkwijzen verloren gaan.

This dissertation presents four separate chapters, all striving towards the same goal: to understand dynamic phenomena occurring in dynamic networks and to explore the emergence of equilibrium in a broad sense.

Individuen die werken in de publieke sector zien zichzelf geconfronteerd worden met tegenstrijdige waarden, tegenstrijdige eisen en de noodzaak van het dienen van het soms moeilijk definieerbare publieke belang.

Deze praktische gids informeert studenten over de taal en andere vaardigheden die nodig zijn om een presentatie in het Engels te geven. Deze bondige en toegankelijke gids is bijzonder behulpzaam voor leerders van het Engels.

Plastics are an intrinsic part of our society. Annually, 400Mt of plastics are produced of which roughly 40% is discarded within a year.

Phospholipase A/acyltransferase 3 (PLAAT3) and PLAAT4 are enzymes involved in the synthesis of bioactive lipids. Despite sequential and structural similarities, the two enzymes differ in activity and specificity.

Promotor: C.A.J. Knibbe, Co-promotor: J.J. Boelens, R.G.M. Bredius

Streptomyces are filamentous bacteria that produce more than two-thirds of known antibiotics.

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

Promotor: J.G.E.M. Fraaije, Co-Promotor: A. Kros

By growing in a soil plants change the biotic and abiotic properties of the soil in which they grow.

Promotor: Prof.dr. A. P. IJzerman, Co-Promotor: L.H. Heitman

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.

Food waste is a defining inefficiency of the modern food system, with profound implications for resource use, climate change, and circular economy transitions. This dissertation examines food waste through two complementary lenses: the prevention of avoidable food waste and the valorization of unavoidable…

Materials with strongly correlated electrons show some of the most mysterious and exotic phases of quantum matter, such as unconventional superconductivity, quantum criticality and strange metal phase.

Fokelien Kootstra verdedigde haar proefschrift op 23 april 2019

In this course, you will explore the organs involved in our food digestion and discover the common causes of abdominal and pelvic pain. The latest graphics and animations will give you new insights and understandings of this part of the body.

Op maandag 19 mei 2025 organiseert Website Application Services van het ISSC in samenwerking met SC&M een Webinar Universitaire Website[s]. Tijdens dit online web event wordt je o.a. ge-update over diverse inhoudelijke zaken die voor jou als webredacteur belangrijk kunnen zijn! Ga via deze link…

Op maandag 19 mei 2025 organiseert Website Application Services van het ISSC in samenwerking met SC&M een Webinar Universitaire Website[s]. Tijdens dit online web event wordt je o.a. ge-update over diverse inhoudelijke zaken die voor jou als webredacteur belangrijk kunnen zijn! Ga via deze link…

Promotor: H.J.A. Rottgering, Co-Promotor: R.J. van Weeren

The thesis explores how interstellar chemistry evolves as a function of time and changing physical architectures during the formation of stars.

Nanoplastics kunnen zich ophopen in harten die nog in ontwikkeling zijn. Dat blijkt uit een studie van Leidse biologen. Hun onderzoek naar kippenembryo’s werpt nieuw licht op hoe de piepkleine plastic deeltjes een gevaar vormen voor onze gezondheid.

Understanding DNA repair mechanisms is essential for advancing plant biotechnology and crop improvement. This study investigates how double-strand breaks (DSBs), induced by CRISPR/Cas systems, are repaired in the model plant Arabidopsis thaliana, and how these processes influence Agrobacterium tumefaciens…

Promotor: A.P.IJzerman, Co-Promotor: L.H. Heitman

The origin and evolution of galaxies are closely linked to many different physical phenomena.

Protoplanetary disks are the gas and dust environments where planetary systems form around young stars. Using observations from the Atacama Large Millimeter/submillimeter Array (ALMA) this thesis analyses the gaseous molecular reservoir, using multiple tracers to resolve the 3D structure of protoplanetary…

This thesis focused on the exploration of monolayer graphene as a membrane in direct methanol fuel cell (DMFC) applications, with improvements achieved through plasma exposure or damage- free chemical functionalization.

Deze week verscheen 'Dutch Post-war Fiction Film through a Lens of Psychoanalysis' van Peter Verstraten bij Amsterdam University Press, het vervolg op Humour and Irony in Dutch Post-war Fiction Film uit 2016. Elk hoofdstuk in zijn 482 pagina's tellende nieuwe studie begint met een titel van Fons Rademakers…

Cynthia van Vonno, politicoloog aan de Universiteit Leiden, verklaart in haar proefschrift waarom individuele parlementariers meestemmen met hun fractie.