Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.

In astronomy, the interpration of observations and measurements plays a crucial role: we rely purely and fundamentally on the information that reaches us as observers. And 80% of all matter in the universe is undetectable directly.

How presence, abundance and enzymatic activities of AM and EM fungi differently affect soil carbon sequestration processes?

The overall objectives of my thesis are to investigate the dynamics of the sorghum root microbiome and to explore the beneficial effects of the root microbiome on sorghum growth and stress tolerance.

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).

Bacteriën op heterdaad betrapt, diep bevroren terwijl ze op het punt stonden de ziekte van Lyme te veroorzaken. Razend enthousiast is Ariane Briegel over wat ze allemaal kan zien dankzij de drie-eenheid van een vriestechniek, een microscoop met camera en kunstmatige intelligentie. 'Het is fascinerend,…

Promotor: Carel J. ten Cate, Co-Promotor: Hans W. Slabbekoorn

This PhD thesis concerns the topic of arithmetic geometry. We address three different questions and each of the questions in some way is about counting how big some set is or can be.

The subject of this thesis, ‘Approach to Markov Operators on Spaces of Measures by Means of Equicontinuity’, combines an analytical and probabilistic approach to Markov operators.

Anthropogenic noise negatively affects wildlife in a wide range of taxonomic groups.

In multi/many-core System-on-Chips (SoCs), the performance is almost linearly scaling with the number of processing elements.

The lipids in the uppermost layer of the skin, the stratum corneum (SC), play an important role in the skin barrier function. The three main SC lipid classes are ceramides (CER), cholesterol and free fatty acids.

Governance and Global Affairs, Instituut Bestuurskunde

Promotor: A. Achúcarro, Co-Promotor: G.A. Palma

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

The studies described in this thesis deal with glycosidases, in particular alpha-galactosidases.

How are links between macro-invertebrate diversity and ecosystem functioning influenced by anthropogenic pressures?

This thesis addresses questions on effectively using variational quantum circuits for machine learning tasks.

Unconstrained day-to-day activities are difficult to quantify and how the corresponding movements shape the brain remain unclear. Read more

What performance criteria does a new technology have to fulfill in order to be added to the list of future energy options and what constraints exist in terms of broad market penetration?

With the energy transition toward a renewable energy supply and a CO2-neutral economy, electrification of the energy system is rising in importance, which leads to the challenge of long-term storage of renewable electricity.

The soil ecosystem consists of the largest reservoir of biodiversity on Earth.

Het Levend Lab van de Universiteit Leiden verhuist naar het hart van het Leiden Bio Science Park. Op de nieuwe plek tussen de Hogeschool, Mentor en Naturalis, zijn de eerste slootjes inmiddels gegraven. Deze nieuwe locatie is beter toegankelijk voor zowel wetenschappers als publiek. Hier kunnen onderzoek…

Spectroscopic studies on fluorescent single molecules in organic condensed matter does not only provide information about the molecule itself, but also its near environment. By suppression of phonon-induced broadening of spectral lines through cooling to low temperatures, small changes in the spectral…

Lysosomal glycosidases are acid hydrolases that fragment glycoconjugates in lysosomes.

Op 18 september 2019 verdedigde Huw Llewellyn zijn proefschrift 'An Institutional Perspective on the United Nations Criminal Tribunals: Governance, Independence and Impartiality'. Het promotieonderzoek is begeleid door promotoren prof.dr. N.M. Blokker en prof.dr. L.J. van den Herik.

Promotor: G.R. de Snoo, Co-promotor: H.H. de Iongh, C.J.M. Musters

In deep reinforcement learning, searching and learning techniques are two important components. They can be used independently and in combination to deal with different problems in AI, and have achieved impressive results in game playing and robotics. These results have inspired research into artificial…

In this thesis, we developed new ways to use a technique called electroextraction (EE) to extract charged molecules from one liquid into another using an electric field.

The thesis mainly contributes to the characterization of Majorana fermions as they appear in the Condensed Matter context.

Promotor: G.R. de Snoo, Co-promotores: M.G. Vijver, J.P.M. Vink

The research described in this thesis combines the latest insights in lysosomal function with lysosome centred cell signalling.

Anthropogenic noise has been shown to affect marine animals in various ways, this may have fitness consequences at individual and population level. This thesis aims to increase insight into the quantification of sound-induced behavioural responses that are relevant to fitness, and into factors that…

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

Wiskunde en Natuurwetenschappen, Centrum voor Milieuwetenschappen Leiden (CML)

Wie vertelt de kiezer hoe goed we het hebben in Nederland? En waarom kan je sowieso maar beter gaan stemmen? Dat legt Gert Jan Lelieveld uit in NRC. Willem van der Does tipt bij de NOS om af en toe het geluid eens uit te zetten bij een tv-debat. Lees meer van beide psychologen in de Nederlandse media.…

Niets heeft zo’n invloed gehad op het verloop van de wereldgeschiedenis als de grote metamorfose van de menselijke samenleving in de afgelopen tweehonderd jaar.

Nederland en India beleefden in de zeventiende eeuw een periode van economische voorspoed en culturele bloei. Tijdens deze gedeelde Gouden Eeuw raakten beide landen ingrijpend beïnvloed door toenemende globalisering en ontwikkelden ze zich tot grote wereldrijken.

Er gaan dit jaar niet één, maar twee citizen science-onderzoeksprojecten van start in Leiden en Den Haag. Dat is de uitkomst van een grote uitvraag onder inwoners en wetenschappers van de beide universiteitssteden. Het Citizen Science Lab gaat de winnaars helpen hun idee uit te voeren, met steun van…

Wiskunde en Natuurwetenschappen, Instituut Biologie Leiden (IBL)

Wiskunde en Natuurwetenschappen

Promotor: Prof.dr. J.M. van Ruitenbeek, Prof.dr. R.M. Tromp

The use of N fertilizers has increased worldwide in the past century. While this increased input of N has increased food productivity, it has also contributed to decreases in biodiversity, soil quality and environmental health, including increases in greenhouse gas emissions.

Promotores: C.A.J. Knibbe; J.N. van den Anker, Co-promotores: H.P.A. van Dongen; B. van Ramshorst

Building a Deep Cross-media Transfer Network to extract visual relations that relieve the problem of insufficient training data for visual tasks.