Electrons in a crystal lattice have properties that may differ from those of a free electron in vacuum.

Interactive exploration of large volumes of data is increasingly common, as data scientists attempt to extract interesting information from large opaque data sets. This scenario presents a difficult challenge for traditional database systems, as (1) nothing is known about the query workload in advance,…

Pharmaceutical companies, governments and the general public have become increasingly aware that animal models used in drug testing lack vital aspects to serve as an accurate representation of human biology. As models of the human body should become more physiologically relevant, animal models no longer…

The NWO-funded Vidi project “American foreign policy and liberalism” challenges the idea that the United States has created and sustained a “liberal international order” since World War II. It instead explores the ways in which illiberal ideologies – such as those underpinning racial hierarchy at home…

Did the Jochids leave their mark on the Grand Duchy, taking into account that the Lithuanian state was one of the main successor states of the Great Horde in the 16thCentury?

Drones blijken een goed hulpmiddel om door de mens aangebrachte veranderingen in het landschap in kaart te brengen. Geofysicus Till Sonnemann en zijn collega’s (archeologie) experimenteren ermee in moeilijk doordringbare gebieden in de Cariben.

Quantum hardware comes with a different computing paradigm and new ways to tackle applications. Much effort has to be put into understanding how to leverage this technology to give real-world advantages in areas of interest for industries such as combinatorial optimization or machine learning.

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

Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

Adenosine is an endogenous ligand which exerts its action by activating adenosine receptors (ARs), while its circulating levels are controlled via a variety of mechanism and proteins, amongst others the equilibrative nucleoside transporters (ENTs).

By training with virtual opponents known as computer generated forces (CGFs), trainee fighter pilots can build the experience necessary for air combat operations, at a fraction of the cost of training with real aircraft.

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

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 explosive radiation and diversification of the advanced snakes (superfamily Colubroidea) was associated with changes in all aspects of the shared venom system. Morphological changes included the partitioning of the mixed ancestral glands into two discrete glands devoted for production of venom ormucous…

Producing green energy has become the main goal in our society in the search of reducing or eliminating the carbon emission from fossil fuels.

Taking as a point of departure the Italian American community in Boston and its process of collective remembrance surrounding Saint Anthony’s Feast, we addressing the limits and potential of montage.

The work in this thesis describes the fundamental role of Lkb1 as a conductor of metabolism-related processes in zebrafish larvae.

Detecting nanoscopic objects plays an important role in nanoscience in particular, in the rapidly growing field of nanobiology. The forebear to modern super-resolution microscopy for single molecule investigation, is fluorescence microscopy.

Overall dispersion in LCA as result of inherent uncertainties, spread and unrepresentativeness.

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

Promotor: J. van der Greef, T. Hankemeier; Co-promotor: H.A. van Wietmarschen

Promotor: Prof.dr. E. Deprettere

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

Autophagy is a fundamental degradative process, maintaining cellular homeostasis and functions in host defense against intracellular pathogens, including mycobacteria and Salmonella.

Glycosidases (GHs) are enzymes responsible for the degradation of carbohydrates and play many roles in human health and pathophysiology. Often, abnormal levels of glycosidase activity are markedly linked to human pathologies.

This thesis describes the role of pollution, specifically neonicotinoid insecticides, as an actor of the ongoing biodiversity decline.

Promotor: I. A. G. Snellen, Co-promotor: M. A. Kenworthy

A new environmental accounting framework using externality data and input-output tools for policy analysis.

Promotor: E. Gittenberger, Co-promotores: L.P. van Ofwegen; B.W. Hoeksema

Promotor: Prof.dr. H.L.V. Linnartz

The ReCiPe methodology for Life Cycle Impact Assessment (LCIA).

This thesis aims to improve the detection from ultra-weak single emitter by enhancing their emission properties with plasmonic nanostructures. We exploit the wet-chemically synthesized single crystalline gold nanorods (GNRs) as our basic frameworks in the whole studies, simply because of their unique…

Humans perceive the real world through their sensory organs: vision, taste, hearing, smell, and touch. In terms of information, we consider these different modesalso referred to as different channels of information or modals.

The transition to electric vehicles (EVs) reduces vehicle emissions to combat climate change. EVs raise concerns regarding the production of lithium-ion batteries and related emissions; while batteries can also provide energy storage services for the electricity system.

Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).

Hydrogen fuel cells are expected to be pivotal in the energetic transition towards renewable energy sources such as solar and wind power. However, their industrial scalability is severely hindered by the high cost and degradation rate of platinum catalysts, one of their key components. Addressing this…

Filamentous Actinobacteria, such as Streptomyces, produce a plethora of chemically diverse bioactive metabolites that have found applications across medicine, agriculture and biotechnology.

One of the effects of climate change is the phenomenon of desertification, a process that occurs in semi-arid and arid areas and causes land degradation as well as vegetation loss. Due to the lack of resources, vegetation self-organizes to sustain itself by forming large-scale spatial patterns.

Galaxies form and evolve through close interaction with their surroundings. As a result, the heavy elements ('metals') that are synthesized in stars, are found both inside and outside galaxies.

Op de Veluwe en Utrechtse heuvelrug zijn in een recordtempo meer dan duizend prehistorische grafheuvels in kaart gebracht. Dit alles door de inzet van duizenden vrijwilligers.

De rijke cultuur van het historische, Zuid-Amerikaanse volk is geen ver-van-mijn-bedshow, laat een schitterende, meer etnografische dan kunsthistorische expositie in het Leidse Museum Volkenkunde zien. Archeoloog Martin Berger was als conservator betrokken bij de ontwikkeling van de Azteken-tentoonstelling…

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

The project

In Israël is bij een opgraving van een synagoge bij Horvat Kur een prachtige ingelegde vloer blootgelegd. In de verweerde steentjes van het gevonden mozaïek staat nog duidelijk de naam ‘El’azar’ the lezen. Leidse onderzoeker Jürgen Zangenberg was samen met een groep studenten betrokken bij de opgraving.…

Zeven Leidse hoogleraren zijn benoemd tot lid van De Koninklijke Nederlandse Akademie van Wetenschappen (KNAW). De installatie van de in totaal drieëntwintig nieuwe leden vindt plaats op maandag 13 september.