The plant hormone auxin plays a central role in the growth and development of plants. Auxin acts in a concentration dependent manner and polar cell-to-cell transport of this hormone determines its distribution in the tissues of plants. This polar auxin transport is mediated by several families of auxin…

What is the environmental impact, the human health impact and the life cycle and production costs of the lab, pilot and commercial diffusion of nanowires and nanowire-based photovoltaic technologies?

The mycorrhizal symbiosis is among the most widespread species interactions on Earth⁠. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries⁠.

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Het Netwerkcentrum biedt examens aan op het terrein van crisisbeheersing.

Zo’n 1500 Azië-experts zullen volgend jaar juli naar de Universiteit Leiden komen voor de elfde editie van de International Convention of Asia Scholars (ICAS 11). Met deelnemers uit meer dan 60 landen is deze tweejaarlijkse conventie de grootste ontmoetingsplaats tussen wetenschappers en partijen uit…

The next generation of high-contrast imaging instruments on space-based observatories requires sophisticated wavefront sensing and control in addition to a high-performance coronagraph.

Studievoorlichting

Universiteit Leiden, Open Universiteit en Universiteiten van Nederland nemen in 2025 het gebouw aan de Grote Marktstraat 48/Spui 3 in Den Haag in gebruik.

Self-assembly is an abundant process in nature and is vital to many processes in living organisms.

Microbiome composition of the spermosphere and the rhizosphere of wild and modern bean accessions grown in an agricultural and a native soil from Colombia was characterized by metagenomics and cultivation-dependent approaches.

Bacteria are highly complex and diverse organisms that have adapted to survive in ecological niches ranging from the most extreme to the most heterogeneous environments.

Promotor: R. Verpoorte, Co-promotores: Y.H.Choi, N.R. Mustafa

Understanding the formation and evolution of planetary systems is one of the most fundamental challenges in astronomy. To directly image and study young exoplanets and the circumstellar disks they form from, dedicated high-contrast imaging instruments are built.

Op 11 november 2021 verdedigde Mariana Gkliati het proefschrift 'Systemic Accountability of the European Border and Coast Guard'. Het promotieonderzoek is begeleid door promotoren prof.dr. P. Rodrigues en prof.dr. L. Besselink (UvA).

Warja Tolstoj, alumna Kunstgeschiedenis, heeft de Ted Meijerprijs 2021 gewonnen. De prijs is vernoemd naar de voormalige directeur van het KNIR (Koninklijk Nederlands Instituut in Rome) en wordt jaarlijks uitgereikt aan de beste MA/ReMa-scriptie of PhD in de Geesteswetenschappen.

Acidobacteria is a widely distributed phylum but their functional roles in ecosystem processes are still largely elusive.

Gert Oostindie verwacht dat de Gouden Koets in het museum blijft. Dat zegt de hoogleraar Koloniale en postkoloniale geschiedenis tegen NU.nl.

Vanaf april 2011 staat in Leiden dé nationale faciliteit voor elektronenmicroscopie. Hier kunnen wetenschappers meer details van celstructuren zichtbaar maken dan nu in Nederland mogelijk is. Tien universiteiten en onderzoeksorganisaties werkten samen om de faciliteit voor elkaar te krijgen.

Due to their central physiological roles in living organisms, retaining beta-glycosidases have been the subject of tremendous research efforts to examine their structure/function relation using numerous biophysical and biochemical approaches.

Promotors: Prof.dr. P.J. Punt, Prof.dr. C.A.M.J.J. van den Hondel

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

This thesis presents the systematics, epidermal defense, and bioprospecting of wild orchids.

How to contribute to a quantum leap of eco-industrial symbiosis in China?

Promotores: F.H.J. Redig, W.T.F. den Hollander

Op 21 maart 2019 verdedigde James Welch zijn proefschrift 'The Grotius Sanction: Deus Ex Machina. The legal, ethical, and strategic use of drones in transnational armed conflict and counterterrorism'. Het promotieonderzoek is begeleid door promotor prof. dr. P.B Cliteur.

Op 23 oktober 2019 verdedigde Yoram Stein zijn proefschrift 'Spinoza's Theory of Religion: The Importance of Religion in Spinoza's Thought and Its Implications for State and Society'. Het promotieonderzoek is begeleid door promotor prof.dr. P.B. Cliteur en prof.dr. A.A.M. Kinneging.

How to bring together different footprints into an integrated family and what are the synergies? What are the roles of inventory analysis and characterization in measuring individual footprints and how these affect a footprint family? How to benchmark environmental footprints against related planetary…

Per 1 september is Tristan Mostert als AIO aangesteld bij het Instituut voor Geschiedenis waar hij met een NWO-beurs werkt aan een proefschrift over Makassar en Europees-Aziatische oorlogvoering in de vroegmoderne tijd.

De meest bijzondere afbeeldingen, kledingstukken en andere unieke voorwerpen uit de vier eeuwen tellende geschiedenis van de universiteit zijn nu te zien bij ‘Celebrating Curiosity’. Vier stukken uit deze expositie uitgelicht.

In his dissertation Michiel Hooykaas outlines the results of six empirical research projects focused at biodiversity awareness in the Netherlands, specifically people’s knowledge about animals.

Promotores: H.S. Overkleeft; G.A. van der Marel Co-Promotor: B.I. Florea

Cardiovascular diseases are among the most frequent causes of death in the world. The main underlying pathology of cardiovascular diseases is the development of atherosclerosis in the medium and large-sized arteries.

Promotores: H.S. Overkleeft, G.A. van der Marel, Co-promotor: B.I. Florea

This thesis consists of three papers that are centered around the common theme of Hausdorff uo-Lebesgue topologies and convergence structures on vector lattices and on vector lattices and vector lattice algebras of order bounded operators.

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?

Hoogleraar Modern Japan Studies Katarzyna Cwiertka kreeg een Vici-subsidie van 1,5 miljoen euro voor haar onderzoeksproject Garbage Matters: A Comparative History of Waste in East Asia. ‘Ik wil iets doen wat anderen niet hebben gedaan.’

Afgelopen week stond de Congolese schilder Sapin Makengele te schilderen in het Lipsius. Het schilderij op zijn ezel beeldde vijf Afrikaanse mensen af, wachtend in de rij voor de Amerikaanse immigratie. Ketenen liepen onder hun voeten. De titel: ‘Vrijwillige slavernij’. PhD Catherina Wilson nodigde…

The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…

Promotor: Prof.dr. E. Smets, M. Stech

Promotor: Prof.dr. H.P. Spaink, Co-promotor: Dr. B.E. Snaar

The radio sky harbours both galactic and extragalactic sources of arcminute- to degree-scale emission of various physical origins. To discover extragalactic diffuse emission in the Cosmic Web beyond galaxy clusters, one must image low–surface brightness structures amidst a sea of brighter compact fore-…

A management strategy has been developed for field margins to reduce pesticide drift to non-target areas and to promote biodiversity on arable land. To this end, 3 and 6 m wide strips along the edges of winter wheat, sugar beet and potato crops have been left unsprayed with herbicides and insecticides…

There are many interpretations of quantum mechanics, and ultimately experiments are needed to verify or falsify these interpretations.

Studievoorlichting, Online Experience

How do nanoparticles bioaccumulate and biodistribute in organisms?

Promotor: M.A.G.J. Orrit

Promotor: Prof.dr. J.N. Kok, Co-Promotor: W.A. Kosters

We present an extensive study of methods for exactly solving stochastic constraint (optimisation) problems (SCPs) in network analysis. These problems are prevalent in science, governance and industry.