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.

Leiden University offers a unique range of summer courses where you can broaden or deepen your knowledge or share your expertise with fellow students. The choice of academic courses is very diverse, ranging from Law, Big Data, Languages and Linguistics to Maths and Natural Sciences, Biology, Biomedical…

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Bij de Onderzoeksgroep Geweld en Geweldpreventie (Violence and Violence Prevention) wordt onderzoek gedaan naar de complexiteit van hedendaags geweld, de uiteenlopende verschijningsvormen ervan en strategieën voor preventie.

In november 2020 is het Engelstalige boek ‘Financial Collateral; Law and Practice’ verschenen. Het boek is gepubliceerd door Oxford University Press en geredigeerd en geschreven door professor Matthias Haentjens. Voorts hebben meegeschreven Anthony Zacaroli (High Court, Chancery Division), Yael Diamant…

Promotores: Prof.dr. H Lenstra, Prof.dr. A Facchini (Padova University)

Promotor: A. Achúcarro, Co-promotor: A. Boyarsky

The expedition commanded by Nicolas Baudin to Tenerife, Mauritius, Australia, Timor and South Africa in 1800-1804 is fully researched in regard to ornithology.

The following report discusses a survey on the topic of the Sustainable Development Goals that was distributed among researchers at Leiden University in the month of November 2021.

Promotor: J.N. Kok, Co-promotor: C.M. Soares, A.J. Knobbe

Promotor: Prof.dr. T. Schmidt

Promotor: T. Schmidt, Co-promotor: S. J.T. van Noort

During embryonic growth, cells proliferate, differentiate, and collectively migrate to form different tissues at the right position and time in the body.

Despite being the object of intense study, embryonic development has been difficult to model due to a number of reasons. First, complex tissues can be comprised of many cell types, of which we probably only know a subset.

The ability to count is a property not often attributed to materials, despite the abundance of memory in materials. Regardless of how a material stores information, it is often difficult to retrieve exactly ‘what’ a material remembers.

We study the interplay of topology and geometry with chirality for several passive and active systems, employing both analytical and numerical methods.

In this work, I explore the creation of new methods that optimize simulations of the gravitational N-body problem. Specifically, I take advantage of the recent popularity of Machine Learning methods to find tools that can suit this problem.

Plant exudates appeared long time ago in the history line of life in the early Devonian. They are typical saps produced by specialized cells.

A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.

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Galaxies in the local Universe fall into two main categories of spirals and ellipticals. In this Thesis, we explore the structural evolution of galaxies into this bimodal distribution.

Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.

With increasing carbon dioxide levels in the atmosphere and their detrimental effect on the global climate, modern society needs to push for more renewable energy sources. Storing widely accessible and abundant solar energy in chemical bonds in the form of molecular fuel via artificial photosynthesis…

De onderzoeksgroep Cyber Security Governance bestudeert de impact van moderne technologie op governance, soevereiniteit, wetshandhaving en internationale betrekkingen, en levert toonaangevend academisch onderzoek en beleidsinzichten.

Hoe kunnen we een balans vinden tussen de soms tegenstrijdige belangen van individuele, publieke en private data-producenten en –verwerkers?

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

Promotor: Prof.dr. H.J.M. de Groot, Co-promotor: Francesco Buda

Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink

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

Photocatalysis has emerged as a powerful tool for enabling challenging transformations in organic synthesis. This thesis explores the development of several photocatalytic reactions designed to form carbon-heteroatom bonds from less-functionalized precursors.

This thesis is about augmented reality (AR). AR is commonly considered a technology that integrates virtual images into a user’s view of the real world.

Cathodic corrosion is a relatively unknown phenomenon that can severely etch metallic electrodes at cathodic (negative) potentials.

Tin electrodeposition applications have rapidly evolved in the past 25 years.

The work described in this dissertation contributes to a better mechanistic understanding of nanoparticles in vivo. To achieve that goal, we used the zebrafish as a highly predictive pre-screening model of nanoparticles.

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

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

Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.

This thesis describes the use of a combined approach of computational and experimental techniques to gain novel insights to understand the glycosylation reaction and its reactive intermediates.

Promotores: Prof.dr. G.A. van der Marel, M. van Heel

Humanity stands at a pivotal juncture, facing the dual challenge of environmental sustainability and rapid population growth, projected to exceed 11 billion by century’s end.

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…

Microscopic insight on lipid-based nanomedicine in vivo remains limited to the perception of the knowledge that could be obtained: if we interpret only what we see, then we only believe to know. Although believing to know encapsulates an undefined amount of uncertainty in the exploration of lipid-based…

In most applications, electrocatalysts exhibit a large surface area to volume ratio, for example using nanoparticles.

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