697 search results for “soil barrier repair” in the Public website
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Multi-objective Evolutionary Algorithms for Optimal Scheduling
Multi-objective optimization is an effective technique for finding optimal solutions that balance several conflicting objectives. It has been applied in many fields of our world, because practical problems usually have more than one desired goal. For example, developing a new vehicle component might…
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Ancient Egyptian Footwear: An Archeological Analysis
The wealth of shoes, sandals and other footwear from ancient Egypt is poorly understood due to lack of research. This is remarkable, because from the very beginning of Egypt’s long history footwear served practical as well as more spiritual purposes.
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Synthetic Methodology Towards ADP-Ribosylation Related Molecular Tools
Phosphorylation affects all four major biomolecules – proteins, lipids, carbohydrates and nucleic acids – and plays a pivotal role in the most fundamental cellular functions.
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Cleveringa Dallaire Critical Conversation Series
In the fall of 2021, Cleveringa professor Roméo Dallaire and world experts shared their thoughts about PTSD, children’s rights, war crimes, humanitarian law, and peacekeeping in a series of conversations about leadership and moral dilemma during times of conflict and crisis.
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A compound that gives life as easily as it takes: Jan Willem Erisman on BBC about ammonium nitrate
Following the Beirut explosion, BBC's podcast series The Foodchain explores the chemical that caused the blast: ammonium nitrate. A compound that is widely used to produce fertilizer. Professor of Environmental sustaibability Jan Willem Erisman tells about the effects of nitrogen on the environment.
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Metagenomics for community ecology; a next generation of eDNA monitoring tool for biomass studies in freshwater environments
How can we quantify the density of species within a community through environmental DNA concentrations?
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Common Practice: a livelihood perspective of economic development in the post-Roman world.
Today’s socio-economic challenges aren’t new. In the centuries after the retreat of the Roman state people with different backgrounds and with different ways of life somehow managed to build and maintain a complex economic system in northern Gaul that would produce the ruling dynasties of Europe. By…
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The quantum computer
The worldwide race to the quantum computer is in full swing. This computer can take on computing tasks that we can only dream of today, such as finding proteins that can be used as medicines in seconds flat. Leiden physicists have discovered how the Majorana particle can be used as a building block…
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Mathematical model predicts drug concentration in the brain
Do medicines arrive in the right amount at the right spot in our brain? By making a model that depicts our brain in small 'brain blocks', Esmée Vendel tries to find an answer to this question. Her new, mathematical model predicts the concentration of medicines in the brain over time and space. Vendel…
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Monitoring drought and salinity stress in agriculture by remote sensing for a sustainable future
Food security is challenged by a growing global population and by climate change. Drought and soil salinity are considered the most important ones that inhibit crop yield and distribution. Worryingly, climate change is predicted to increase not only their frequency and severity, but also their co-occurrence,…
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Institute of Biology Leiden
The Institute of Biology Leiden (IBL) is an internationally oriented institute for research and education in biology. We are part of the Faculty of Science at Leiden University.
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Functional analysis of agrobacterium tumefaciens virulence protein VirD5
Supervisor: P.J.J. Hooykaas
- Institute of Urban Environment
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Nature and human interactions
It is well-known that humans have significantly transformed ecosystems since their adoption of agriculture. However, in a deeper past, prehistoric hunter-gatherers may already have altered and modified their niche in ways that had major impacts on ecosystems.
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Molecular engineering of plant development using Agrobacterium-mediated protein translocation
Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa
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Controlling growth and morphogenesis of the industrial enzyme producer Streptomyces lividans
Promotor: Prof.dr. G.P. van Wezel, Co-Promotor: E. Vijgenboom
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Pesticides and the Environment
The book ‘Pesticides and the Environment’ gives a transparent overview of facts and figures concerning pesticide use in the Netherlands and the impact of pesticides on the environment.
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Global distribution patterns of mycorrhizal associations
Mycorrhizas are symbiotic associations between soil fungi and most plant species.
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Fieldwork
Fieldwork is an essential part of this research and of course this part of the project is also a joint effort by citizen scientists and professional archaeologists. Discover when fieldwork will take place and how you can participate.
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The rhizomicrobiome of Sorghum ; impact on plant growth and stress tolerance
The overall objectives of my thesis are to investigate the dynamics of the sorghum root microbiome and to explore the beneficial effects of the root microbiome on sorghum growth and stress tolerance.
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The mechanism of Agrobacterium-mediated transformation of eukaryotic cells
We aim to unravel the molecular mechanisms involved in the transformation of eukaryotic cells by Agrobacterium.
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Fire and grazers in the West African savanna
Promotores: H.A. Udo de Haes, H.H.T. Prins, Co-promotor: H.H. de Iongh
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Terrestrial field trials for side-effects of pesticides
The thesis describes terrestrial field trials aimed to detect side-effects of pesticides within the framework of pesticide registration procedures. Field trials were developed using vascular plants Brassica napus and Poa annua, caterpillars Pieris brassicae and effects on decomposition were studied…
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Flooding and Management of Large Fluvial Lowlands
Paul Hudson, Associate Professor of Physical Geography at Leiden University College, examines human impacts on lowland rivers in his new book.
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Francophone Literature in the Low Countries (1200-1600)
In late medieval and early modern times, books, as well as the people who produced and read (or listened to) them, moved between regions, social circles, and languages with relative ease. Yet, in the multilingual Low Countries, francophone literature was both internationally mobile and firmly rooted…
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Institutional trust
Trust in public institutions in the Tata Steel case and beyond
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Molecular characterization of copper-dependent enzymes involved in Streptomyces morphology
Promotor: G.P. van Wezel, Co-promotor: D. Claessen
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Cheating belowground interactions
Mycoheterotrophy is a particular mode of life in which plants obtain carbohydrates from their associated fungal partners, instead of by using photosynthesis.
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Analecta Praehistorica Leidensia 41
Corrie Bakels & Hans Kamermans (eds) (2009)
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The Western European Loess Belt
Agrian History, 5300 BC - AD 1000; C.C. Bakels
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Department of Environmental Biology (CML-EB)
Mission: The Environmental Biology department aims to increase the scientific understanding of how current and emerging anthropogenic threats affect biodiversity and ecosystem services. Through this understanding they facilitate strategic management of natural resources by addressing urgent challenges…
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Dissociative chemisorption on transition metal surfaces
The dissociative chemisorption of a molecule on a transition metal surface represents a rate-limiting step in many heterogeneously catalyzed processes, whereby most chemicals are made. In spite of the importance of this reaction, an accurate first principles approach to modeling it does not yet exist.…
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Beyond Perfusion: Measuring Water Transport Across Brain Barriers with Arterial Spin Labeling MRI
PhD defence
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Glucocerebrosidase and glycolipids: In and beyond the lysosome
The lysosomal β-glucosidase named glucocerebrosidase (GCase) is a retaining β-glucosidase that hydrolyzes the glycosphingolipid glucosylceramide (GlcCer) to ceramide and glucose at acid pH.
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LACDR PhD Portal
The objective of the PhD Education and Supervision program is to educate PhD candidates in becoming professionals who are competent to conduct scientific research in the field of the pharmaceutical sciences independently.
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UBC Europe – University-Business Cooperation in Europe
To goal of this project is to get a deeper, more comprehensive and up to date understanding of the state of University-Business Cooperations (UBC) in Europe, from the perspective of both the Higher Education Institutions and the business sector.
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Key publications
Key publications of the Analytical BioSciences and Metabolomics group
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Water use of electricity technologies: A global meta-analysis
Understanding the water use of power production is an important step to both a sustainable energy transition and an improved understanding of water conservation measures. However, there are large differences across the literature that currently present barriers to decision making.
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Liver X receptor: therapeutic targeting of common pathways in Psoriasis and Cardiovascular co-morbidities
Both psoriasis and atheroslcerosis are diseases characterized by a chronic and systemic inflammatory profile with local lipid disturbances that alter the barrier function of the skin (psoriasis) and cause the development of atherosclerotic plaques (atherosclerosis).
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Antibiotic combination therapies against drug resistant Gram negative pathogens
Can effective synergists be identified to enhance the effect of antibiotics against Gram negative pathogens?
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Towards Open and Reproducible Terrorism Studies: Current Trends and Next Steps
In recent years, the use of primary data in terrorism research has increased. In order to maximise the benefits of this trend, we want to encourage terrorism scholars to implement open science practices more systematically. This article therefore presents different avenues towards open and reproducible…
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Ab Initio Molecular Dynamics Calculations versus Quantum-State-Resolved Experiments on CHD3 + Pt(111): New Insights into a Prototypical Gas–Surface
The dissociative chemisorption of methane on metal surfaces is of fundamental and practical interest, being a rate-limiting step in the steam reforming process. The reaction is best modeled with quantum dynamics calculations, but these are currently not guaranteed to produce accurate results because…
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The Borders of Race in Colonial South Africa. The Kat River Settlement, 1829–1856
This monograph by Robert Ross provides a detailed narrative of the Kat River Settlement in the Eastern Cape of South Africa during the nineteenth century.
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Gorlaeus Faculty Office
Einsteinweg 55, Leiden
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Chemical reactivity of O2, CO and CO2 on Cu surfaces
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.
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CCLS Past Events
On this page you can find information about previous CCLS events.
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Making and creating with ages-old knowledge
The ability to create objects and structures with our hands has been essential to human development. This ability is something modern society is at risk of losing. Leiden archaeologists gather knowledge about ancient processes of ‘making and creating’ over the centuries, knowledge that helps our current…
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Sustainable futures
How can we organise society so as to keep our planet habitable for us and for all other life forms around us? To answer this question, Leiden researchers collaborate across disciplines, from biology to data science, and from environmental economy to archaeology.
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Eleven Vidi grants for Leiden
NWO has awarded eleven Leiden researchers a Vidi grant of 800,000 euros. The research subjects range from Cicero and muscle dystrophy to the archaeology of bogs.
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Risks to Health and the Environment Related to the Use of Lead in Products
The aim of this project was to estimate emissions from lead products-in-use for the past, the present and the future and assess the development of toxicological risks associated with these products.