We show that Kirchhoff ’s law of conservation holds for non-commutative graph flows if and only if the graph is planar. We generalize the theory of (Euclidean) lattices to infinite dimension and consider the ring of algebraic integers as such a lattice.

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

This thesis describes how different colours of light affect various aspects of the growth and development of Arabidopsis and tomato plants⁠.

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

In this thesis, we have used numerical approaches to study the effects of translational symmetry breaking on strange metallic systems as realised by the holographic duality⁠.

This thesis is about cosmological inflation and its relation to observations.

The aim of this thesis is to present novel techniques for proving cryptographic schemes secure against quantum adversaries. Most results are within the context of an idealized model called the ‘quantum random-oracle model’.

This thesis describes the design, synthesis, and immunological evaluation of varying (neo)antigenic peptide conjugates containing either a TLR2 or a TLR7 agonist.

n this thesis we study curves. In the first half, we study moduli spaces of curves and Gromov-Witten invariants, certain kinds of curves counts. We employ logarithmic geometry for this.

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…

Description of Development of a low cost technology for in-situ treatment of groundwater for potable and irrigation purposes (TiPOT) (2004 - 2007)

Onderstaand vind je de belangrijkste praktische informatie. Deze informatie wordt in de komende periode verder aangevuld.

Op termijn zullen alle gebouwen een duurzame manier verwarmd en gekoeld worden, waardoor gas niet meer nodig is.

Io is één van manen van Jupiter, de grootste planeet in het zonnestelsel. Jupiter heeft wel negentig manen. Vier daarvan zijn veel groter dan de andere, en van die vier staat Io het dichtst bij Jupiter. Van de andere manen staan er maar vier nog dichter bij Jupiter.

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

Join the Pipe is een project dat zich inzet om plastic afval te verminderen en mensen zowel in het Globale Zuiden als in het Globale Noorden van drinkbaar water te voorzien.

Mars is de vierde planeet vanaf de zon en soms aan de hemel te zien als rode stip. De afstand tot de zon is ongeveer 228 miljoen kilometer. Een rondje om de zon duurt 687 aardse dagen. Een dag duurt bijna net iets langer dan op aarde, 24 uur en 40 minuten.

Venus is de tweede planeet vanaf de zon en staat op 108 miljoen kilometer. Een jaar op Venus is korter dan op aarde en duurt maar 225 dagen. Doordat Venus heel langzaam om haar as draait, duurt een dag juist langer, wel 117 aarddagen! Op Venus is je alien dus elke twee dagen jarig.

Multicopper oxidase, laccase, can efficiently reduce oxygen to water and are mostly used in the enzymatic biofuel cells.

Een techniek om CO2 om te zetten in brandstoffen en andere nuttige producten, is elektrolyse. Om dit efficiënt en op grote schaal te kunnen doen, moeten we wel precies begrijpen hoe elektrolyse werkt. Hoogleraar Marc Koper is expert op dit gebied.

Van waterzuiveringsinstallaties tot een lekkere warme douche, de CO2-uitstoot ten gevolge van het watergebruik in de VS staat gelijk aan dat van 50 miljoen auto’s die een jaar lang rondrijden. In The Washington Post raadpleegt journalist Tik Root verschillende experts om te leren over manieren om ons…

What are the pressing issues of our time, and how can different disciplines come together to address them? Studium Generale and Leiden University College (LUC) present the Global Challenges series: events that bring together a researcher from LUC and an expert from another discipline to tackle a shared…

Kunst en vrije tijd, Kunst en vrije tijd

Students Practicing Citizen Journalism

How were the Russians, under early modern conditions, able to incorporate this distant, undeveloped and, because frequent nomadic attacks, dangerous territory? And what role did the Kolyvan-Voskresensk plants play in this process?

Het belangrijkste doel van dit onderzoek is om de steden van het Romeinse Nabije Oosten in de keizertijd in kaart te brengen, met een focus op locatie, stadsgrootte en stedelijke kenmerken, om de vorm van het stedelijke systeem en de niveaus van integratie te bestuderen.

Do e-waste workers display enhanced effects of adverse health effects due to informal e-waste processing in Nigeria? Is there a difference between the health outcomes of the exposed and the control groups? Are there difference in health effects within and between job groups (collectors, dismantlers,…

Tentoonstelling

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

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.

The main object of study in this thesis is an Arakelov inequalitywhich bounds the degree of an invertible subsheaf of the direct image ofthe pluricanonical relative sheaf of a semistable family of curves.

Taxonomy as a science has accumulated data and knowledge for more than 250 years.

In this thesis we study bistable reaction-diffusion equations on lattice domains.

The marine shipping industry is one of the strongest emitters of nitrogen oxides (NOx), a pollutant detrimental to ecology and human health. Over the last 20 years, the pollution produced by power plants, the industry sector, and cars has been decreasing.

Artful Mathematics: The Heritage of M. C. Escher

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. P. Stevenhagen

This thesis is about the study of hydrocarbons via infrared spectroscopy.

This dissertation is about Bayesian learning from data. How can humans and computers learn from data?

This thesis provides explicit expressions for the density functions of absolutely continuous invariant measures for general families of interval maps, that include random maps and infinite measure transformations, not necessarily number systems.

Almost all bacteria are enveloped by a cell wall that provides cellular protection.

The Sun and all the stars in the night sky reside in the Milky Way galaxy. In the at-rest reference frame of the Galaxy, typical stars travel with velocities of about 100-200 kilometres per second.

Quantum computing is an emerging technology, which holds the potential to simulate complex quantum systems beyond the reach of classical numerical methods.Despite recent formidable advancements in quantum hardware, constructing a quantum computer capable of performing useful calculations remains challenging.In…

This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).

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…

HEPGAME is a research project that combines the world’s fastest computer algebra system for High Energy Physics equations, FORM, with insights from artificial intelligence. The name combines High Energy Physics and Games.

This thesis presents insights from our study of various correlated electron systems with a scanning tunneling microscope (STM). In ordinary metals, electron-electron interactions exist, but get substantially screened due to the sheer number of electrons.