De afdeling Staats- en Bestuursrecht van de Universiteit Leiden heeft een bundel gepubliceerd over de vraag of de historisch gegroeide combinatie van de concepten van democratische legitimiteit en de scheiding van machten mogelijk blijft buiten de context van de traditionele staat, en indien dit mogelijk…

Animal diet studies are critical for understanding ecological processes such as trophic interactions, energy flow, and nutrient cycling. By examining what animals consume, ecologists gain insights into species specialization, predator-prey relationships, and ecosystem management.

Cryogenic electron microscopy (cryo-EM) is a powerful technique used to visualize the inside of cells and to study specific protein complexes. Within this thesis, I describe the use of various cryo-EM techniques to gain insight into the structural changes of the human pathogen, Vibrio cholerae, as it…

This dissertation investigates the energy and material related impacts of the transition towards a low-carbon heating system in the Netherlands, in the context of its 2050 climate and circular economy policy goals.

Streptomyces are multicellular, Gram-positive bacteria in the phylum of actinobacteria which produce a high amount of bioactive natural products of which the expression is tightly coordinated with the life cycle.

There is an increasing amount of attention on EU and its Member States contributions to implementation of two landmark agreements: the Paris Climate Agreement and the UN Agenda 2030 with Sustainable Development Goals (SDGs). Absent from the current literature is an analysis of the political effect of…

Plant architecture has distinct forms in different plant species, but also within a species the finalarchitecture of a plant is determined by its gradual development and changes therein induced by environmental conditions during the plant’s life cycle.

Kijk mee en praat mee over de wetenschap van het verleden tijdens wekelijkse Let’s Plays van populaire games en vodcasts op het livestreamplatform Twitch.

This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.

Artful Mathematics: The Heritage of M. C. Escher

The ultimate goal of cosmologists is to find a cosmological model able to explain the current observational data.

Een échte professor in de klas!

De tweejarige masteropleiding Philosophy of the Arts van de Universiteit Leiden biedt de mogelijkheid om je te specialiseren in conceptuele en methodologische kwesties in de geesteswetenschappen.

This course uses the lives, ideals and achievements of Theodore, Franklin, and Eleanor Roosevelt to create the idea of a Rooseveltian century. It is an invitation to think critically and historically, and it wants to give you a glimpse of what it means to be a historian at work.

The physical origin of the dozens of stellar-mass binaries, the mergers of which have been detected by the LIGO-Virgo-KAGRA collaboration via gravitational waves, is still unknown.

This thesis focuses on enhancing predictions of central nervous system drug exposure using the LeiCNS-PK3.0, a physiologically based pharmacokinetic model.

In dit artikel doen Bart Schuurman en Sarah Louise Carthy onderzoek naar de oorzaken van terrorisme door verschillen en overeenkomsten tussen links-, rechts- en jihadistische extremisten te vergelijken.

An Active Galactic Nucleus (AGN) is a highly luminous region at the center of a galaxy, powered by the accretion into a supermassive black hole and emitting energy from radio waves to gamma rays, often outshining the host galaxy.

Promotor: Prof.dr. A.G.G.M. Tielens

This dissertation, Layered Loyalties: The Natuurkundige Commissie in the Netherlands Indies (1820-1850), studies the Natuurkundige Commissie.

Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa

In this research I assess the impact of the recently discovered gas reserves south off Cyprus on the escalation of the Cyprus conflict.

Promotor: J. A. Bouwstra

In this thesis, we present new laboratory data of interstellar dust analogues.

A complex community of microbes develops in the infant gut shortly after birth. We call this community the infant gut microbiota. The microbiota influences the health of the infant, which makes the composition and function of the infant gut microbiota an important topic to study.

Promotor: Prof.dr. H.P. Spaink, Co-promotor: Dr. M. van der Zee

Promotor: Prof. dr. Arnold Tukker & Prof. dr. René Kemp (Maastricht University)

Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L. Kaper (UvA)

What is the current relevance of the ethics of counterterrorism and what is the added value of ethics support within the practice of counterterrorism?

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

Promotor: Prof.dr. M. Ubbink

Promotores: Prof.dr. S.J. Edixhoven, Prof.dr. E. Ullmo (University Paris-Sud)

Plants, are sessile organisms, have developed strategies to adapt to changes in their environment, in part by altering their growth and development.

This thesis investigates a pharmacological challenge model induced by Toll-like receptor 7 (TLR7) activation, focusing on skin inflammation and its implications for early drug development.

Ruim 1200 leerlingen uit groep 7 van basisscholen in Leiden en Den Haag kregen op de verjaardag van de universiteit les van een echte professor.

Promotor: Prof.dr. M. Ubbink

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.

The findings in this thesis improve the understanding of 1) the relationship between exposure characteristics and toxicity of ENPs, 2) the joint toxic action of ENP mixtures and the comparison to metal salt mixtures, 3) how NOM affects the individual and joint toxicity of ENPs, 4) the extent of trophic…

Promotor: K.H. Kuijken

Forming at the nodes of the Cosmic Web and growing hierarchically via mass accretion, galaxy clusters are the largest virialized halos in our universe, composed of dark matter (DM; ≥85%), ionized hot plasma in the intracluster medium (ICM; ≥10-15%), and galaxies (≥1-5%).

The expanding population and economic activity are driving up global energy consumption. Simultaneously, there is an urgent need to transition from fossil fuels to renewable sources to mitigate the climate crisis, primarily caused by fossil fuel combustion.

Promotor: Prof.dr. J.A. Bouwstra, Co-promotor: A. El Ghalbzouri

In this thesis we study the landscape of gravitational models which modify GR by introducing an additional scalar degree of freedom (d.o.f.) to source Cosmic Acceleration.

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

Promotores: G. Persoon, R. Schefold

The four possible segments A, T, C and G that link together to form DNA molecules, and with their ordering encode genetic information, are not only different in name, but also in their physical and chemical properties.

Promotor: Prof.dr. J. Schaye, Co-promotor: Marcello Cacciato