This thesis deals with properties of Jacobians of genus two curves that cover elliptic curves.

Op 21 november 2018 verdedigde Lieke Kools haar proefschrift 'Essays on wealth, health, and data collection'. Het promotieonderzoek is begeleid door promotoren prof. dr. K.P. Goudswaard en prof. dr. C.L.J. Caminada.

Shape and biological function are tightly connected. Physical descriptions are used to connect the shape of a biological system with its function.

In this thesis, topics relating to the optimization of high-throughput pipelines used for imaging are discussed. In particular, different levels of implementation, i.e., conceptual, software, and hardware, are discussed and the thesis outlines how advances on each level need to be made to make gains…

Promotor: Prof.dr. M.L. van Hecke, Co-Promotor: V. Vitelli

Op 20 januari 2022 verdedigde Marco Stam het proefschrift 'Essays on Welfare Benefits, Employment, and Crime'. Het promotieonderzoek is begeleid door prof.dr. M.G. Knoef.

Bas Rietjens en zijn collega's onderzochten de oorlog tussen Rusland en Oekraïne en onderzochten deze veelvoud aan facetten en hun onderlinge verbanden.

Promotores: H.W. Lenstra, B. Erez, Co-promotor: L. Taelman

Promotor: A. Doelman, Co-promotor: M.F.E. de Jeu

Description of The Regional Network on the Synergy between the Convention on Biological Diversity and the UN Convention to Combat Desertification.

Promotor: G.R. de Snoo

This thesis mainly extends the theory of positive operators on Riesz spaces to a setting of pre-Riesz spaces.

Promotor: C. W. J. Beenakker, Yu. V. Nazarov, Co-promotor: J. Tworzydlo

In this thesis we study products of linear error correcting codes.

Rottgering

In some condensed matter systems, such as the surface of a 3D topological insulator, the electrons are effectively massless and we must necessarily use the massless Dirac equation to describe them.

Promotor: Prof.dr. V. Icke, Co-Promotor: T.I. Madura

An algorithm is discussed to compute the exponential representation of principal units in a finite extension field F of the p-adic rationals.

Promotor: Prof.dr. P.G.L. Klinkhamer, Co-Promotor: T.J. de Jong

This thesis aimed to investigate the impact of exposure dynamics, relative contributions of ENPs(particle) and ENPs(ion), and dosing regimens on the toxicity of ENPs varying in different physico-chemical properties, on the composition and functioning of soil microbial communities.

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…

De masterspecialisatie Philosophical Perspectives on Politics and the Economy van de Universiteit Leiden was voorheen bekend onder de naam Philosophy, Politics and Economics.

Despite the history of studies on methanol formation from CO2, the dominant elementary reaction steps that constitute the chemical mechanism for this catalyzed process are not determined.

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.

In this thesis, rational points on K3 surfaces are studied. In the first part of Chapter 1 the Brauer group and the the Brauer-Manin obstruction are introduced.

Description of Effects of glufosinate-ammonium on off crop vegetation.

In this thesis we study the moduli space of genus g curves, and the differential forms that occur naturally on this moduli space.

The energy system is at the heart of two of the greatest challenges of the 21st century: decreasing CO2 emissions to meet the ambitions of the Paris agreement while fulfilling the growing energy demand associated with the economic aspirations of a growing world population.

The key purpose of this project is to study tautological relations on the level of closed differential forms or even integral cochains (i.e. we don't take classes in cohomology).

The research described in this thesis has, using the zebrafish as a model system, shed new light on the intricate relationship between TB and DM2, in particular on the role of leptin, SHP-1 and glucocorticoids.

Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…

The parabolic Anderson model (PAM), which is the Cauchy problem for the heat equation with random potential. The PAM is a mathematical model that describes how mass (i.e. matter or energy) flows in a medium in the presence of a field of sources and sinks.

Promotor: P. Stevenhagen, Co-promotor: R.M. van Luijk

Plants are colonized by an astounding number of microorganisms that can provide different life-support functions, including nutrient acquisition and protection against (a)biotic stresses like drought or pathogen attack.

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.

Promotor: Prof.dr. E. Bouwman, Co-Promotor: S. Bonnet

M.T.M. Koper, Co-promotor: D.G.H. Hetterscheid

D2.2 comprises the in-depth legal analysis of the initial heuristic model, focused on addressing, in more detail, the main legal concerns for data reusers in the European data economy. This detailed analysis of the legal propositions presented in D2.1 is supplemented by an analysis of the technological,…

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

This ecological community has long been known to affect host biology, and their diverse roles have been further clarified in recent years following numerous studies of animal:microbiota interactions in diverse systems.

Voltammetry plays a crucial role in modern scientific research by offering valuable insights into the electrochemical properties of materials, with wide-ranging applications in fields such as materials science, energy storage, corrosion studies, and sensor development.

In this thesis, the role of plant-mediated soil legacy effects in shaping aboveground plant-insect interactions was investigated.

Promotores: W.J.G.M. Peijnenburg, G.R. de Snoo, Co-promotor: M.G. Vijver

D1.2 reports on the findings of an analysis of framework conditions relevant in the context of the data economy from a legal, a socio-economic and a technological perspective. The analysis is a key foundation for the creation of an initial, heuristic model of the European data economy. The deliverable…

The studies in this thesis are focused on the physical effects in the flat band materials. The results contain the discovery of strong enhancement of RKKY spin-spin interactions with specific geometric arrangement and dynamical generation of excitonic order parameter with high magnitude.

Make more fluid: In condensed matter systems, electrons can acquire unusual properties from their interaction with the atomic lattice.

Freshwater biodiversity has been threatened by eutrophication due to excessive nutrients in the environment. Releasing the freshwater species from such pressures requires efforts from industry and manufacturers to avoid emissions to vulnerable and high-risk regions.

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

Promotor: Prof.dr. G.R. de Snoo, Co-promotor: R. Heijungs

In recent decades, climate change has led to more frequent and severe drought events, causing serious consequences such as increased forest mortality and significant crop yield losses. Understanding how drought affects plants, especially economically important herbaceous species, is crucial for predicting…