3,072 zoekresultaten voor “africa in the world” in de Publieke website
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Protoplanetary disk anatomy: examining the structure and chemistry of planetary birthplaces with simple molecules
This thesis examines the link between simple molecules and the underlying structure and chemistry within protoplanetary disks - the birthplaces of planets.
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Presentaties eLaw op 'Brave New World' en 'Nacht van de Ontdekkingen'
eLaw - Centrum voor Recht en Digitale Technologie, is deze week goed vertegenwoordigd op een aantal activiteiten rondom Technologie en Samenleving!
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Political discourses and the securitization of democracy in post-1991 Ethiopia
This thesis attempts to interrogate post-1991-2015 political development in Ethiopia, focusing on the political discourses espoused by the government and opposition, using the discourse analysis method and securitization theory.
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EUniwell Open Lecture Series | Africa the Conservation Continent of the 21st Century?
Lezing, Lezing onderdeel van serie
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The use of computational toxicology in hazard assessment of engineered nanomaterials
Assessing the risks of engineered nanomaterials (ENMs) solely on the basis of experimental assays is time-consuming, resource intensive, and constrained by ethical considerations (such as the principles of the 3Rs of animal testing). The adoption of computational toxicology in this field is a high p…
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Develop a methodology for assessing the effective dose of nanomaterials for environmental risk assessment purposes
How to make a quantitative assessment of the relative contribution to toxicity of ions and particles? Is the toxicity of nanoparticles related to their size or shape? Which physicochemical property of nanoparticles is an appropriate dose metric of nanoparticles?
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Systematic investigations into the role of ceramide subclass composition on lipid organization and skin barrier
The lipids in the uppermost layer of the skin, the stratum corneum (SC), play an important role in the skin barrier function. The three main SC lipid classes are ceramides (CER), cholesterol and free fatty acids.
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Lipid model membrane systems as a tool for unraveling the underlying factors for skin barrier dysfunction
Barrier function is the natural role of the skin. The lipid matrix present in the outermost layer of the skin, the stratum corneum is important for this function.
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Dynamics and regulation of the oxidative stress response upon chemical exposure
The focus of the described research in this thesis is on the oxidative stress response (Nrf2 pathway). The aim of the research presented in this thesis is to obtain more information concerning microRNAs which are involved in the Nrf2 pathway, to determine and evaluate the application of microRNAs for…
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Quantifying the toxicity of mixtures of metals and metal-based nanoparticles to higher plants
Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver
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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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External Safety Aspects of the Chains of Chlorine, Ammonia and LPG
Safety issues of the transport and storage of Chlorine, ammonia and LPG.
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From Star-formation to Recombination: Expanding our View of the Radio-Recombination-Line Universe
The origin and evolution of galaxies are closely tied to the cyclic feedback processes between stars and the interstellar medium (ISM).
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Neonicotinoids in nature: The effects on aquatic invertebrates and their role in ecosystems
This thesis describes the role of pollution, specifically neonicotinoid insecticides, as an actor of the ongoing biodiversity decline.
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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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Chemical functionalization of the graphene surface for electrical and electrochemical sensing application
Advanced sensing techniques require graphene with high quality and well-controlled surface chemistry.
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Studying dark matter using weak gravitational lensing : from galaxies to the cosmic web
Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).
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Supercritical carbon dioxide spray drying for the production of stable dried protein formulations
Promotor: W. Jiskoot, Co-promotor: H.A. Every
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Systems pharmacokinetic models to the prediction of local CNS drug concentrations in human
Clinical development of drugs for central nervous system (CNS) disorders has been particularly challenging and still suffers from high attrition rates.
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Giant barrel sponges in diverse habitats: a story about the metabolome
Marine sponges are important members of reef ecosystems, as they play ecological roles that are essential for the health of the reef.
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Extremely loud & incredibly far: observing radio bright AGN into the cosmic dawn
In this thesis new methodologies are developed for the detection and systematic study of radio sources in the early universe. This allows us to gain a deeper understanding of the formation and evolution of galaxies, the activity of supermassive black holes, and the final phase transition of our universe:…
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Star formation and aging at cosmic noon: the spectral evolution of galaxies from z=2
Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)
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Mind the gap: gas and dust in planet-forming disks
Promotores: Prof.dr. E.F. van Dishoeck, Prof.dr. C.P. Dullemond
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The Miliuseae revisited: phylogenetic, taxonomic, and palynological studies in a major clade of Annonaceae
Promotor: Prof.dr. E.F. Smets, Co-Promotor: L.W. Chatrou
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Mechanistic studies of the water oxidation reaction with molecular iron catalysts
In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.
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The impact of sustainable forest management on plant and bird diversity in East Kalimantan, Indonesia
Promotor: G.R. de Snoo, Co-promotor: H.H. de Iongh, C.J.M. Musters
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When galaxy clusters collide: the impact of merger shocks on cluster gas and galaxy evolution
Promotor: Prof.dr. H.J.A. Rottgering
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When materials become critical: lessons from the 2010 rare earth crisis
Promotor: G.J. Kramer Co-Promotor: E.G.M. Kleijn
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Protostellar jets and planet-forming disks: Witnessing the formation of Solar System analogues with interferometry
The focus of this thesis is how stars like our Sun and planets like Jupiter, Saturn, and Earth are formed.
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Impact of land use changes on the human-elephant conflict
Promotor: G.R. de Snoo, W. Kustiawan, Co-promotor: H.H. de Iongh
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The environmentally-regulated interplay between local three- dimensional chromatin architecture and gene expression
Nucleoid associated proteins maintain the architecture of the bacterial chromosome and regulate gene expression, hinting that their role as transcription factors may involve local three-dimensional chromosome re-modelling.
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indicators for sustainable forest management, East Kalimantan, Indonesia. The impossible made possible?
What is vegetation structure and composition in SFM primary forest, secondary logged over forest (logging FSC certified and logging non certified) in comparison to primary forest? What is avian guild diversity in SFM primary forest, secondary logged over forest (logging FSC certified and logging non…
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Revealing the nature of new low-frequency radio source populations
It has now been well established that shocks and turbulent motions in the intra-cluster medium (ICM) generated through cluster mergers can produce large-scale synchrotron emission.
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A time-space translation mechanism for patterning the vertebrate anteroposterior axis
My PhD project studies how the temporally sequential Hox gene expression is regulated during head-tail patterning of the frog embryo.
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The Diving Dutchman: het marien-gravimetrisch onderzoek van F.A. Vening Meinesz (1887-1966)
Promotores: Prof.dr. F. van Lunteren, Prof.dr. F.S. Gaastra
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Comparative biology of common and grey seals along the Dutch coast
What are the main factors associated with the stranding of the two seal species? What are the factors influencing the prevalence of disease in the two species? Which human-related factors influence the populations of the two seal species?
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Comparative biology of common and grey seals along the Dutch coast : stranding, disease, rehabilitation and conservation
Promotores: H.A. Udo De Haes, P.M. Brakefield
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In vitro investigation of the photoprotection mechanism of Light Harvesting Complex II
Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.
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Evaluation of the zebrafish embryo as an alternative model for hepatotoxicity testing
Promotor: Prof.dr. B. van de Water, Co-promotores: L.T.M. van der Ven, A.S. Kienhuis
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Discovery and exploitation of the transcriptional regulatory system of pectinases in Aspergillus niger
Pectin is a plant cell wall polysaccharide made of mainly D-galacturonic acid (GA) subunits. The potency of the filamentous fungus Aspergillus niger to naturally secrete high amounts of pectinases to degrade pectin has been utilized for the industrial production of pectinases.
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Management of small-scale -African fisheries: The Case of Elephant Marsh in Malawi
How does the management of Elephant Marsh Fishery in Malawi relate to wider contexts of policies, theories and regions? And how can the current management system be adapted to achieve long-term sustainability of the fishery?
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Shaping the European External Action Service and its post-Lisbon crisis management structures
This article 'Shaping the European External Action Service and its post-Lisbon crisis management structures: an assessment of the EU High Representatives’ political leadership' assesses the role, influence and core aspects of the EU High Representatives’ (HR/VPs) “political leadership” in the context…
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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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The early stress response of jasmonic acid in cell suspension cultures of Catharanthus roseus
In order to gain a better insight into the basis of the rapid jasmonic acid (JA)-mediated stress response, an integrated approach using a targeted high-resolution mass spectrometry-based (HRMS) platform, was conducted to monitor the metabolism of JA using the model system of cell suspension cultures…
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Analysis of the angucycline biosynthetic gene cluster in Streptomyces sp. QL37 and implications for lugdunomycin production
Streptomyces bacteria are a valuable source of natural products, many of which are used in the clinic or in biotechnology.
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The relation between dynamics and activity of phospholipase A/acyltransferase homologs
Phospholipase A/acyltransferase 3 (PLAAT3) and PLAAT4 are enzymes involved in the synthesis of bioactive lipids. Despite sequential and structural similarities, the two enzymes differ in activity and specificity.
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Withstanding the cold: energy feedback in simulations of galaxies that include a cold interstellar medium
Understanding how galaxies form, interact, and evolve comes largely from comparing theory predictions with observational data. Numerical simulations of galaxies provide the most accurate approach to testing the theory, as they follow the non-linear evolution of gas and dark matter in great detail and…
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Structural characterization of the cell envelope of Actinobacteria under changing environments
Bacteria have the ability to alter their morphology in order to adapt to changing environments.
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Light Weighed: On the Statistics and Systematics of Weak Gravitational Lensing
In astronomy, the interpration of observations and measurements plays a crucial role: we rely purely and fundamentally on the information that reaches us as observers. And 80% of all matter in the universe is undetectable directly.
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compression and statistics disagree: two frequentist challenges for the minimum description length principle
Promotor: P.D. Grünwald