235 search results for “density” in the Public website
-
Images of Galois representations
Promotores: S.J. Edixhoven, P.Parent
-
Plant-microbe interactions
Which microorganisms live near and inside plant roots? How do they contribute to plant health? Can microorganisms be employed in plant protection?
-
Fungal Chitosans from Fermentation Mycelia for Plant Biostimulants (FunChi)
Our focus is to optimize the fungal cell wall to both increase chitin production and chitin extractability.
-
Guide to prospective students
If you are intrested instudying stochastics, the following information will help you to choose the right path
-
Skin Lipids: Localization of Ceramide and Fatty Acid in the Unit Cell of the Long Periodicity Phase
The lipid matrix of the skin's stratum corneum plays a key role in the barrier function, which protects the body from desiccation. The lipids that make up this matrix consist of ceramides, cholesterol, and free fatty acids, and can form two coexisting crystalline lamellar phases: the long periodicity…
-
Aging and Immunity
The Aging and Immunity group is led by Dr. Amanda Foks. In this group we aim to investigate how aged immune cells contribute to atherosclerosis and identify novel therapeutic targets and strategies to extend health span and inhibit cardiovascular disease.
-
Transition to renewable energy requires more space - but it will be much cleaner
To generate renewable energy takes more space than one might think. New research by environmental scientist Paul Behrens and master's student John van Zalk shows how much space is needed for nine specific types of energy. Biomass, hydro and wind, while vital, take up the most space. Natural gas and…
-
Research
Research in the POD-group addresses all features of random phenomena – modelling, structuring, analysis, control, optimisation – and covers both fundamental and applied aspects.
-
Publications
Below is a chronological list of the most recent to oldest publication from the MultiGreen project.
-
When semi-local DFT is accurate for dissociative chemisorption on a transition metal surface, and when it is not
Density functional theory (DFT) with so-called semi-local exchange has been remarkable accurate for some dissociative chemisorption reactions on metals, but it has notoriously failed for others. A team of researchers from the University of California at Irvine and the Leiden Institute of Chemistry have…
-
Relentlessly Plain
Understanding Late Neolithic Ceramic Containers from Upper Mesopotamia
-
A new window on the Universe
Rottgering
-
Tjerk Oosterkamp Lab (Microscopy and Quantum Mechanics at milliKelvin temperatures)
We explore the possibilities to combine magnetic resonance techniques with atomic force microscopy together in a single microscope: the MRI-AFM, also called Magnetic Resonance Force Microscopy (MRFM).
-
Teeth Tell Tales
A multi-disciplinary approach to past lifestyles and cultural practices
-
Computational modeling of tumor growth and metastasis and the role of the immune system in tumor destruction
In this project, we aim to obtain a quantitative understanding of the role of the immune system in tumor regression, of the role of tumor cell heterogeneity in cancer growth and of tumor cell migration properties.
-
Rewriting Hellenism: André Chénier (1762-1794) and Hellenistic Poetry
The project focuses on an intriguing aspect of André Chénier’s poetry, which has not received much attention in scholarship: Chénier’s indebtedness – in the form of translation, adaptation, borrowing, reference – to Hellenistic poetry; it interprets the role of this indebtedness in his poetical and…
-
Towards artificial photosynthesis: resolving supramolecular packing of artificial antennae chromophores through a hybrid approach
Promotor: H.J.M. de Groot
-
Persia and Babylonia: Creating a New Context for Understanding the Emergence of the First World Empire
The Persian Empire (539-330 BCE) was the first world empire in history. At its height, it united a territory stretching from present-day India to Libya - and it would take 2,000 years before significantly larger empires emerged in early modern Eurasia. This territorial sweep is both a source of fascination…
-
Modeling energy conversion dynamics at interfaces
Chemical reactions go hand-in-hand with an energy exchange with the environment in which they take place. Surfaces offer a variety of energy dissipation channels, constituted by the nuclear and electronic degrees of freedom of the atoms at the interface. Aiming at an improved future harvesting of energy,…
-
Superselective bonds light up
Rather than one key and one strong lock, biology often uses tens or hundreds of weaker links to bind parts together, such as cells membranes. This allows for selectivity and also reversibility: the binding can also be undone. Researchers first caught this phenomenon using spheres or colloids, and published…
-
New generation of graphene biosensors based on smooth surfaces and sharp edges
The surface and the edges of graphene are expected to provide higher sensitivity and specificity in detecting and characterizing single molecules. However fundamental physical limits exist in reaching an ultimate precision in detecting the dynamics of chemical and biological systems. The research in…
-
Leiden physicists image lumpy superconductor
High-temperature superconductivity is one of the big mysteries in physics. Milan Allan’s research group used a Josephson Scanning Tunneling Microscope to image spatial variations of superconducting particles for the first time, and published about it in the journal Nature.
-
Fundamental research on optimal quality tin coatings
Leiden Professor Marc Koper will be carrying out research on the chemical process underlying tin coating in order to optimise the quality of tin coatings. He has been awarded a subsidy of 285,000 euros from the STW Technology Foundation and Tata Steel.
-
Materials made of self-spinning particles
Materials are either gas, liquid or solid, based on how their molecules respond to temperature and pressure. But what if the building blocks are self-spinning particles instead of ordinary molecules? Theoretical physicists found out what determines the phase of those artificial materials. Publication…
-
Strategic research into and development of best practice for, predictive modelling on behalf of Dutch Cultural Resource Management
Are predictive archaeological maps a reliable tool to play an important role in the spatial planning? One of the goals of this project was to develop best practices for the production and application of the models.
-
Mapping Medieval Malaria
This research project studies the distribution and impact of medieval malaria in the Netherlands.
-
Lions of West Africa : ecology of lion (Panthera leo Linnaeus 1975) populations and human-lion conflicts in Pendjari Biosphere Reserve, North
Promotores: G.R. de Snoo, B. Sinsin, Co-Promotor: H.H. de Iongh
-
Redox catalysis for a sustainable energy infrastructure
The main research theme in the group of Dennis Hetterscheid is to understand and mimic bioinorganic multi-electron processes that are relevant to our future energy infrastructure. Reduction of protons generates hydrogen that can be used as a chemical fuel. Alternatively to gaseous hydrogen, the reduction…
-
Chemistry between stars and planets
In the large gas clouds between the stars, chemical reactions take place under extreme conditions, giving rise to both small molecules, such as water and common salt, as well as large complex molecules that can serve as the building blocks of life. This is known as astrochemistry and it is something…
-
Human-lion conflict around Nairobi National Park: Lion Population Structure, Diet, and Movement in a Semi-Fenced Park.
What is the population size and social structure in time and space? What is the lion diet and food preference in time and space? What is the home range (MCP and Kernel) and movement in time and space? What are human – lion conflict and responses of lions to traditional herding in time and space? What…
-
Quantum dynamics of H2 on metal surfaces: researching the role of surface atoms
This research focuses on the (Quantum) Dynamics (QD) of the reactive scattering of H2 from metal surfaces.
-
Electrolysis and fuel production
Electrolysis is a technique that can be used to convert CO2 into fuels and other useful products. To do this efficiently and on a large scale, however, we need to understand exactly how electrolysis works. Professor Marc Koper is an expert in this field.
-
The Wadi Al Jizzi Archaeological Project
The Wadi al Jizzi Archaeological Project is a systematic and long term archaeological surface survey project, investigating the rich archaeological heritage of the Wadi al Jizzi region (Oman) from the Paleolithic until the early Modern period.
-
Cities in the Greek World
Whereas when we started the first Project the chief aim was pure research, to find out more about the past in a region, now we see that the countries of Europe are faced with the great problem that there are far too many archaeological sites for them to deal with by excavation, but yet some kind of…
-
PhD candidate || Modelling plasma surface interactions with machine learning
Science, Leiden Institute of Chemistry (LIC)
-
Postdoctoral researcher in Theoretical Chemistry (1.0 fte)
Science, Leiden Institute of Chemistry (LIC)
-
Study programme
The Urban Studies bachelor’s programme is based on two learning trajectories. One is dedicated to knowledge related to urban issues, while the other focuses on a wide range of practical and academic skills.
-
Dick Stufkens Prijs 2018 awarded to chemical physicist Stefan Vuckovic
The Dick Stufkens Prize 2018 for the best PhD thesis of the Holland Research School of Molecular Chemistry (HRSMC) will be awarded to Dr Stefan Vuckovic. In his thesis, Vuckovic presents a new and innovative approach to the quantum mechanical calculation of atomic and molecular energies. It lays the…
-
Newly discovered gene regulates balance of ‘bad cholesterol’
In a publication in Science, Noam Zelcer from the Division of Biopharmaceutics describes a previously unrecognized pathway to regulate LDL-cholesterol levels. He is also able to modulate this pathway. This opens the possibility for complementing and improving the efficacy of statins: A class of drugs…
-
Students map Milky Way with dwarf stars
Isabel van Vledder and Dieuwertje van der Vlugt, 2 astronomy students from Leiden University, have mapped the entire Milky Way galaxy in dwarf stars for the first time. This result is the most comprehensive model ever for the distribution of these stars. The findings appear in a new paper in Monthly…
-
Leiden econophysics model tested best by central banks
A full overview of all loans and debts between banks would help preventing a new financial collapse. But banks do not provide this information. An econophysics model by Diego Garlaschelli and collaborators reconstructs the most probable situation and finishes first place in two independent tests.
-
Going accurate for molecule – metal surface interactions
Researchers from the THEOR CHEM group at Leiden University strive to set new benchmarks in the accuracy of the prediction of interaction energies between molecules and metal surfaces.
-
Harold Linnartz Professor of Laboratory Astrophysics
The Executive Board has appointed Professor Harold Linnartz as Professor of Laboratory Physics with effect from 1 June 2011. Linnartz has worked since 2005 as senior lecturer at the Leiden Observatory.
-
Mind the gap(s)! A surface science approach to catalysis?
Surface Reaction Barriometry: Methane Dissociation on Flat and Stepped Transition-Metal Surfaces.
-
Leiden University launches MULTIPLY platform to integrate information by newest ESA-satellites for earth observation
The Institute of Environmental Sciences of the Leiden University has, together with its European partners, presented the new MULTIPLY platform, during a workshop at the European Space Agency (ESA). This platform makes it for the first time possible to combine different data stream’s of ESA’s newest…
-
Postdoc in Cognitive and Computational Neuroscience
Social and Behavioural Sciences
-
About the programme
An attractive feature of the MSc Chemistry programme at Leiden University is the large flexibility of the study programme, allowing students to compose a tailor-made programme following their personal interests. Within the boundaries set by the programme, students make and may adjust their choices during…
-
Electrochemistry for renewable energy
Imagine we could convert the greenhouse gas CO2 into synthetic fuels using sustainable energy. This would enable us to reduce the amount of CO2 and at the same time store wind and solar energy in an innovative way. Chemist Akansha Goyal (Leiden University) is conducting fundamental research to make…
-
Human disturbance of ecosystems leads to increase in disease-transmitting mosquitoes
The changes that humans are making to the landscape are beneficial for mosquitoes that spread diseases such as Zika, chikungunya and dengue. This is what biologist Maarten Schrama and his colleagues write in the journal Nature Scientific Reports. ‘If we know in which living environments mosquitoes thrive…
-
Specialised plants may not be as vulnerable as was thought
Plants that are pollinated by fewer species of animal may be less vulnerable to change than was thought. This is what Saskia Klumpers discovered in the Rocky Mountains in Colorado. She will be awarded a PhD on 15 December.