Promotor: Prof.dr. M.K. Richardson

Bacteria are highly complex and diverse organisms that have adapted to survive in ecological niches ranging from the most extreme to the most heterogeneous environments.

Promotor: Prof.dr. G.P. van Wezel

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…

Tijdens de IBL Spotlights bespreken onderzoekers van de afdeling Science Communication & Society hun nieuwste bevindingen en realisaties.

Migration imposes special pressures on the meaning, experience and organization of lifecycle rituals. These pressures are felt most strongly by Muslim migrants to Western Europe. In this innovative study, Nathal M. Dessing examines the effects of migration on the life cycle rituals of Moroccan, Turkish…

Promotor: E.F. Smets Co-promotor: J. Geml

Automated Machine Learning (AutoML) is widely used to automatically build a suitable practical Machine Learning (ML) model for an arbitrary real-world problem, reducing the effort of practitioners in the ML development cycle for real-world applications. Optimization is a key part of a typical AutoML…

This work is dedicated to interpreting in cohomological terms the special values of zeta functions of arithmetic schemes.

This dissertation focused on computational methods based on first principles calculations using the Density Functional Theory (DFT) framework. Emphasis was laid on affordable methods that can provide a tradeoff between computational expense and accuracy.

The demand for neodymium-iron-boron (NdFeB) magnets is rapidly growing, while the neodymium supply chain is under pressure. Recycling can alleviate these issues. This thesis investigates the potential for deploying novel magnet recycling technologies and their environmental consequences.

Promotores: Prof.dr. G.W. Canters, Prof.dr. T.J. Aartsma

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

Promotor: W.T. de Groot

Bacteriophages, or phages for short, are the most abundant biological entity in nature. They shape bacterial communities and are a major driving force in bacterial evolution.

Human civilization consumes a huge amount of fossil fuels, which has resulted in an atmospheric CO2 level which has not been higher in over 800 millennia.

De maandelijkse dosis onderzoeksinspiratie van Leiden Science, van onze medewerkers, voor onze medewerkers en alle andere nieuwsgierigen.

This research delves into a region of space known as the interstellar medium (ISM), which is essentially the area between the stars filled with gas and dust.

Op 13 oktober 2021 verdedigde Ross Spence het proefschrift 'Collateral Transactions and Shadow Banking'. Het promotieonderzoek is begeleid door promotoren prof.mr. M. Haentjens en prof.dr. A.M. Pacces (UvA).

Wat is de milieu-impact van de vis op ons bord? En is een elektrische auto wel duurzamer wanneer we het opwekken van de elektriciteit meerekenen? Jeroen Guinée brengt de milieu-impact van producten en technologieën in kaart. Hij analyseert het van de ontginning van de grondstof tot de uiteindelijke…

ICT Shared Service Centre

Niet alle duurzame businessmodellen hebben de impact die ze beloven, onthult Leidse milieuwetenschapper Levon Amatuni. Het delen van auto’s of het hergebruiken van telefoons, bijvoorbeeld, hebben een minder grote impact dan gedacht. Amatuni raadt mensen aan om ‘te focussen op echte veranderingen in…

Promotie

Promotie

Het eerste wereldwijde congres over placebostudies van 2-4 april moest uitwijken naar de Stadsgehoorzaal om de deelnemers uit 20 landen te ontvangen. Ook de Nederlandse media lieten zich niet onbetuigd. Bekijk een selectie uit het nieuws met Andrea Evers over placebo's en conditionering.

Als de olie uit oliepalmzaden is gewonnen, kunnen de vruchtresten dienen als grondstof voor bio-ethanol. Maar uitgestrooid op de oliepalmplantage bemesten ze de bodem. Wat is milieuvriendelijker? Edi Wiloso vergeleek bij het Centrum voor Milieuwetenschappen Leiden de beide groene opties. Promotie op…

Waarom zijn niet alle kinderen even gevoelig voor variaties in hun sociale omgeving?

The role of material production as a driver of environmental impacts is increasing, which calls for a better understanding of global material flows. This thesis explores the role of in-use stocks of products, buildings and infrastructure as a key driver of global material demand and discusses the implications…

Striga hermonthica, commonly known as witchweed, infests major cereal crops in Sub-Saharan Africa causing severe yield losses and threatening the livelihood of millions of resource poor farmers.

Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)

Decentralized plug and play systems for energy production are the future picture of our society. Artificial photosynthetic systems are used for this purpose.

This dissertation revolves around the design and implementation of novel instrumentation and related measurement techniques, at the single molecule level, for use in biophysical research. Chapter 1 presents an introduction to the field of fluorescence-based single molecule measurements. In particular,…

The research described in this thesis focused on identifying novel drug targets and synergistic combinations for triple-negative breast cancer (TNBC), a virulent subtype of breast cancer with a dismal prognosis and limited therapeutic options.

The electrochemical oxygen reduction reaction (ORR) is an essential half-reaction for the utilization of hydrogen as a sustainable fuel, via the conversion of hydrogen to electrons and protons facilitated by the ORR. In the most common fuel cells, the ORR is requires high loadings of non-abundant platinum…

Plants and soils from natural ecosystems harbor great diversity of soil microorganisms, which could potentially contribute to the sustainability of horticulture. The knowledge about using wild plant species and soil from natural ecosystem to improve the crop health will advance the application of ecological…

Als een nieuwe methode is ontwikkeld om een (neuro-)psychologische aandoening of hieraan gerelateerde gedragsfactoren te herkennen en te behandelen, kan deze nog niet direct in de klinische praktijk worden ingezet. Eerst moet de methode geëvalueerd worden, bij voorkeur in gerandomiseerde, gecontroleerde…

Creating a framework to assess the sustainability of fish farms which will set sustainability standards and give consumers information about the the sustainability and safety of their seafood.

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.

Fungal food spoilage often starts with a contamination with spores. Experimental data strongly indicate the existence of subpopulations of spores with different levels of resistance to preservation methods.

Surface acoustic waves (SAWs) are mechanical waves that travel along the surface of a material and find many applications in modern technologies due to the ease of excitation on piezoelectric substrates via interdigital transducers (IDTs).

Lezing, Tuesday Talks: Science Insights

Onderzoek van de sectie Methodologie & Statistiek van het Instituut Psychologie aan de Universiteit Leiden

Data worden steeds belangrijker in de topsport. Maar kunnen data op het allerhoogste niveau het verschil maken? Sportdatawetenschapper Rens Meerhoff denkt van wel, zo vertelt hij bij De Kennis van Nu.