Microbial rhodopsins are photosensitive pigments implemented in the growth and adaptation of a large population of microorganisms.

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

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

Promotor: Prof.dr. M.K. Richardson, Co-Promotor: F. Witte

Patterns of paleomobility in the Caribbean were studied through an inter-disciplinary approach using a combination of archaeological, osteological, mortuary, and isotopic data.

The funerary textile tradition from the Osmore Valley, South Peru, and its social-political implications (2005)

Control of infectious diseases poses continuous challenges for human health.

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.

With his clever measuring methods Ignas Snellen – together with his team – was the first to detect carbon monoxide in the atmosphere of exoplanets. For his pioneering work the Leiden astrophysicist has been awarded the Spinoza Prize, the highest academic honour in the Netherlands. The prize of 2.5 million…

Since the start of academic year 2020-2021 LUGO started working on new goals to increase the effect of our work within Leiden University. Below, the goals for the current academic year will be explained. For now, LUGO will continue to work on the accomplishment of the goal called 'Reduction of single…

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Radiation can be used to determine the isotope ratio of a skeleton. This provides information about where our ancestors lived and what they consumed. Dr Andrea Waters has developed a revolutionary method that can trace patterns of consumption from tens of thousands of years ago.

The Grotius Centre for International Legal Studies offers PhD candidates a flexible programme and a stimulating research environment. It is a programme particularly attractive to and designed for 'external' PhD candidates (buitenpromovendi), that work part-time or full-time and who seek to pursue in…

The International Institute of Air and Space Law (IIASL) offers PhD candidates the possibility to enroll in the IIASL PhD Track. It is designed for 'external' PhD candidates (buitenpromovendi), who seek to pursue a PhD in Air Law or Space Law while honouring their professional commitments in paralle…

Huub de Groot is professor in Biophysical Organic Chemistry. With his team he works in the field of photosynthesis and artificial photosynthesis. The molecular basis for photosynthesis is formed by protein complexes and organelles that contain chlorophyll molecules. The antenna systems herein capture…

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Various departments of the university have worked on developing the institution’s environmental policy plan: het Milieubeleidsplan Universiteit Leiden 2016-2020.

Currently the focus of the project is the development of a tool that utilizes dimensionality reduction techniques in order to analyze and interpret the lexical and phonological variation between different sign languages. Additionally, the application of deep learning techniques for the extraction of…

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.

Artificial photosynthesis aims to produce fuels from solar energy using chemical processes. In semi-artificial photosynthesis, a hybrid approach is taken using both chemical and biotechnology approaches. We aim to develop hybrid systems between light-harvesting nanoparticles and redox-enzymes (oxidoreductases)…

Promotor: E. Bouwman, Co-promotor: S. Bonnet

Promotor: J.W.M. Frenken Co-Promotores: I.M.N. Groot; L.B.F. Juurlink

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The University Sports Centre The Buzz is affiliated with the National Corporate Fitness Plan (Nationaal Bedrijfsfitness Plan). This unique ‘condition of employment’ offers staff of participating companies around 40% tax benefit on the cost of staying in shape!

Promotor: Prof.dr. W. Jiskoot, Co-promotor: A. Kros

In what way can the chemical properties of cobalt porphyrines be adjusted to optimize their selectivity and activity when using them for the electrochemical conversion of CO2 to methane and methanol?

On Wednesday 25 January 2017 Esmeralda Vergeer will defend her doctoral thesis Regeldruk vanuit een ander perspectief (Regulatory burden from a different perspective). The supervisor of the research is Professor W.J.M. Voermans.

The correctness of computational systems is of great importance to our society, since it becomes ever more reliant on the benefits of computing.

Safety issues of the transport and storage of Chlorine, ammonia and LPG.

Data theory research on the analysis on the multidimensional data

In this work we describe three methods to improve the performance of Quantum Field Theory calculations.

Research at the MCBIM group is comprised of the following research themes:

In 2021, Leiden University will develop a new Sustainability Vision 2030. This vision for the future focuses on the primary tasks of the University: integration and visibility of sustainability in our education and research.

Lezing

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Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.

Exploiting metabolic vulnerabilities to identify anticancer compounds in zebrafish synthetic lethality screens.

Plants could be regarded as small chemical factories, which produce chemical substances via photosynthesis. If we can imitate photosynthesis in an artificial system, we can make clean fuels and materials out of sunlight and CO2. Huub de Groot is very close to designing a system of this kind.

CONCLUSION: This study demonstrates that human macrophages can be induced to exert direct anti-tumor activity against osteosarcoma cells. Our observation that the induction of macrophage anti-tumor activity by L-MTP-PE required IFN-gamma may be of relevance for the optimization of L-MTP-PE therapy in…

How does the extracellular matrix coordinate endothelial cell behavior during angiogenesis, and how do metabolic waste-products and matrix-degrading enzymes produced by the tumour modify the extracellular matrix so as the change the cellular coordination?

Twenty years from now, the world population is estimated to be around 9 billion people (now 7.8 billion). In combination with the improvements in living standards and the corresponding growth in consumption, this will result in an enormous increase in the demand for food, consumables, water and energy.…

The research of this PhD project can be subdivided into two main disease areas: migraine and stroke. For both we will be investigating how artificial intelligence (AI) and machine learning (ML) techniques can be used to study these afflictions, their (early) detection, and their potential treatment.

What are trait-trait relationships in wetlands? To what extent the so-called leaf economics traits deviate from terrestrial ecosystems? How traits specific to wetland plant relate to plant strategies? What’s the relationship between wetland plant traits to the ecosystem functioning (e.g. productivity,…

Our focus is to optimize the fungal cell wall to both increase chitin production and chitin extractability.

Successful completion of the procedure to obtain a doctorate culminates in the conferral of the academic degree of Doctor in a specific subject.

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