337 zoekresultaten voor “low countries” in de Publieke website
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Disentangling drought-responsive traits with focus on Arabidopsis
In recent decades, climate change has led to more frequent and severe drought events, causing serious consequences such as increased forest mortality and significant crop yield losses. Understanding how drought affects plants, especially economically important herbaceous species, is crucial for predicting…
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Painting with starlight : optical techniques for the high-contrast imaging of exoplanets
This thesis describes the development and validation of new high-contrast imaging techniques, with the ultimate goal of enabling the next generation of instruments for ELT-class telescopes to directly image Earth-like extra-solar planets orbiting around nearby stars.
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Spin-momentum locking in oxide interfaces and in Weyl semimetals
Electrons in a crystal lattice have properties that may differ from those of a free electron in vacuum.
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Modulation of the immune system for treatment of atherosclerosis
Cardiovascular diseases are the primary cause of death in the world with atherosclerosis as primary underlying cause.
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X-ray spectroscopy of interstellar dust: from the laboratory to the Galaxy
In this thesis, we present new laboratory data of interstellar dust analogues.
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Towards an effective biodiversity conservation and governance in the Pontocaspian region
Freshwater and brackish water ecosystems are arguably the most vulnerable ecosystems on earth, due to concentrated human developments in and around them. The Pontocaspian (PC) region located at the border of Europe and Asia contains a variety of brackish water ecosystems and unique inhabitants, known…
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Nano shapes micro : Impacts of metallic nanoparticles on microbial communities
This thesis aimed to investigate the impact of exposure dynamics, relative contributions of ENPs(particle) and ENPs(ion), and dosing regimens on the toxicity of ENPs varying in different physico-chemical properties, on the composition and functioning of soil microbial communities.
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Smoothly breaking unitarity : studying spontaneous collapse using two entangled, tuneable, coherent amplifiers
The Copenhagen interpretation of quantum mechanics states that a measurement collapses a wavefunction onto an eigenstate of the corresponding measurement operator.
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The electrochemical reduction of dioxygen and hydrogen peroxide by molecular copper catalysts
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…
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It's just a phase: High-contrast imaging with patterned liquid-crystal phase plates to facilitate characterization of exoplanets
This thesis aims to demonstrate how the achromatic nature and design flexibility of liquid-crystal optics can be used to improve high-contrast imaging instruments to facilitate detailed exoplanet characterization.
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Molecular electronics: Controlled manipulation, noise and graphene architecture
Atoms and molecules are the basic units of matter. If we keep dividing a bar of gold or a glass of water into smaller parts, at the end we are left with a single gold atom or a water molecule.
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Ontstaan lespakket / De Academische jaarpijs
Antibiotica Gezocht! is een initiatief van medewerkers en studenten van de Universiteit Leiden en het Erasmus Medisch Centrum in Rotterdam. Zij doen onderzoek naar antibiotica en de bacteriën die antibiotica produceren. In 2011 wonnen wij de Academische Jaarprijs met het project Antibiotica Gezocht!…
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Student projects
To get an idea of the science communication products and research that is possible, a few examples of student projects of recent years are shown below.
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Van woord tot akkoord. Een analyse van de partijkeuzes in CPB-doorrekeningen van verkiezingsprogramma's en regeerakkoorden, 1986-2017
This PhD-thesis analyses the relationship between the parties’ choices in the CPB Netherlands Bureau for Economic Policy Analysis’ assessments of the election manifestos and coalition agreements over the period 1986-2017, and tries to explain this relationship.
- Diversiteit in onderzoek en onderwijs
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Targeting Human Proteasomes: Substrates, Inhibitors and Prodrugs
Large parts of the research described in this Thesis aims at the development of oligopeptide-masked toxins and their in situ immunoproteasome-mediated activation.
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The formation of complex organic molecules in dense clouds-Sweet results from laboratory
Large areas of space are filled by molecular clouds that consist of gas and dust grains that are the remnants of dead stars. When these clouds start collapsing, the decreasing temperature and increasing density cause gas particles to start accreting onto dust grain surfaces.
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CE-MS for metabolomics: advancing performance and detection sensitivity
The major and ultimate aim of metabolomics is to obtain an answer to a specific biological or clinical question.
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Lava worlds: characterising atmospheres of impossible nature
Over the last three decades, the discovery of exoplanets has revealed the boundless variety of worlds beyond our own Solar System. Majority of planetary systems contain short-period planets that are larger than Earth but smaller than Neptune.
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Lipid bilayers decorated with photosensitive ruthenium complexes
Promotor: Prof.dr. E. Bouwman, Co-promotor: S. Bonnet
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Creating Global Scenarios of Environmental Impacts with Structural Economic Models
To limit the effects of climate change, global average temperature since pre-industrial measurements are to be kept well below 2 °C preferably even at 1.5 °C.
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Accountable Artificial Intelligence: Holding Algorithms to Account
Artificial intelligence algorithms govern in subtle, yet fundamental ways, the way we live and are transforming our societies. The promise of efficient, low‐cost or ‘neutral’ solutions harnessing the potential of big data has led public bodies to adopt algorithmic systems in the provision of public…
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General plant strategies and functions in wetlands: Global trait-based analyses
Wetland plants are distinguished from plants of other terrestrial ecosystems by their adaptations to specific habitat stresses, including waterlogged and flooding and the subsequent abundance of phytotoxic compounds.
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Optimisation of first clinical studies in special populations: towards semi-physiological pharmacokinetic models
M. Danhof, Co-promotores: J. Freijer, A. Yassen
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Effects of glufosinate-ammonium on off crop vegetation
Description of Effects of glufosinate-ammonium on off crop vegetation.
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PhD candidate: HiTaL: High Throughput Anisotropic Lithography
Wiskunde en Natuurwetenschappen, Leids Instituut voor Onderzoek in de Natuurkunde (LION)
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Vervolgopleidingen
Door het volgen van een master vergroot je je kansen op de arbeidsmarkt om een baan op niveau te vinden. Na de driejarige bachelor kun je direct doorstromen naar een één- of tweejarige master bij de Universiteit Leiden of een andere instelling.
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Vervolgopleidingen
Door het volgen van een master vergroot je je kansen op de arbeidsmarkt. Na de driejarige bachelor kun je direct doorstromen naar een één- of tweejarige master bij de Universiteit Leiden of een andere instelling.
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Vervolgopleidingen
Door het volgen van een master vergroot je je kansen op de arbeidsmarkt om een baan op niveau te vinden. Na de driejarige bachelor kun je direct doorstromen naar een één- of tweejarige master bij de Universiteit Leiden of een andere instelling.
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Insolvency Office Holder-project
It researches (the possibilities for) the development of a set of principles and best practices for insolvency office holders by comparing multilateral treaties and soft law recommendations and national legislation within Europe.
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Rare Earth Supply Chain and Industrial Ecosystem: A Material Flow Assessment of European Union
1) Assess the trends in supply and production status of these critical minerals and mineral products worldwide and Europe’s dependence including on intermediate products such as permanent magnets, RE based super alloys, batteries, polishing compounds, phosphors, catalysts etc. 2) Trace the entire value…
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EU JudgeCo Platform
The ultimate aim of this project is to improve cooperation between courts in different Member States.
- Onderzoeksoutput
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Exposed to events that never happen: Genaralized unsafety and prolonged psysiological stress responses
The aims of the project are to: further clarify 'inhibition by safety'; explore and describe all possible sagety factors, with a special focus on the primary human safety source: social connectedness; reviewing prolonged stress responses without stressors.
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SiTaSol
What are the life-cycle environmental impacts and risks to human health and ecosystems of a III-V/Si PV system? How can these be expected to change when the system is deployed at industrial scale? What are the most favourable recycling scenarios?
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Macrophages inhibit human osteosarcoma cell growth after activation with the bacterial cell wall derivative liposomal muramyl tripeptide in combination
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…
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Brieven als buit
Alledaagse taal uit het verleden kennen wij nauwelijks, maar taalkundig onderzoek van een unieke brievencollectie opent perspectieven. Buitgemaakte brieven van mannen, vrouwen en zelfs kinderen stonden centraal in het Leidse Brieven als Buit-project onder leiding van prof. dr. Marijke van der Wal, dat…
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Recommended weighting methods
The project falls in the context of the EU Thematic Strategy on the Sustainable Use of Natural Resources (COM(2005)670). The Institute for Environment and Resources (IES) of the Joint Research Centre (JRC) has developed three sets of decoupling indicators. Such indicators require the definition of a…
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Onderzoek
Research
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Exposure and health Assessment of Persistent Organic Pollutants (POPs) at e-waste recycling site among workers in the informal sector in Nigeria
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,…
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Solution for Critical Raw Materials - an European Export Network (SCRREEN)
Where and how are critical materials currently used and how can this information be used to develop scenarios about their future demand.
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Career Talk with Wim Klop
Debat, Career Talk
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Carel Stolker in de media: 'Brexit houdt wetenschap echt niet tegen'
'Onderschat nooit de verbindende kracht van wetenschappelijk onderzoek en onderwijs.' Dat stelde rector magnificus Carel Stolker in zijn toespraak op de dies, waarbij hij vooral doelde op de naderende Brexit. Een boodschap die veel weerklank vond in de (internationale) media.
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LIFE-GREENAPI
Het ontwikkelen en demonstreren van innovatieve praktijken om met een lage milieu-impact farmaceutica te produceren.
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Pesticides Atlas, Pilot Study
Description of Atlas of the surfacewater concentrations of pesticides in the Netherlands, a pilotstudy.
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Nanowire based Tandem Solar Cells
In this project innovative technology for photovoltaics cells is developed and analysis of ecological and health related risks are explicitly accounted for.
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Monitoring and detection of nanomaterials in biological media.
How do nanoparticles bioaccumulate and biodistribute in organisms?
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NanoFeed
Do selenium nanoparticles in fish food cause subtle alterations in behavior of fish: effect of particles size and concentration?
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Nominaties Prof. dr. J.Th.J. van den Berg-prijs 2015
De nominaties voor de jaarlijkse Prof. dr. J.Th.J. van den Berg-prijs voor de beste bachelorscriptie van de opleiding Politicologie/Internationale Betrekkingen en Organisaties zijn bekend. Het betreft elf scripties over diverse onderwerpen, van bootvluchtelingen tot kiesgedrag, en van democratie tot…
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Postdoctoral position in Modelling Amphibian Species Invasions
Wiskunde en Natuurwetenschappen, Centrum voor Milieuwetenschappen Leiden (CML)