731 zoekresultaten voor “donkere energy” in de Publieke website
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Duurzaamheid in onderwijs
In het onderwijs bieden wij alle studenten de mogelijkheid om kennis te maken met duurzaamheidsthema’s en –vraagstukken, waar mogelijk aansluitend bij de inhoud van hun opleiding.
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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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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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Origami metamaterials : design, symmetries, and combinatorics
In the first part of this thesis we study the geometry of folding patterns.
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On the Power Efficiency, Low latency, and Quality of Service in Network-on-Chip
In multi/many-core System-on-Chips (SoCs), the performance is almost linearly scaling with the number of processing elements.
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Taking control of charge transfer: strategic design for solar cells
Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda
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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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Surface-structure dependence of water-related adsorbates on platinum
Promotor: M.T.M. Koper, Co-promotor: J.B.F. Juurlink
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Knots in plasma
A plasma is an ionized gas with very low electrical resistivity. As such, magnetic field lines are 'frozen in' and move with the fluid. Magnetic field lines that are linked, knotted and tangled, cannot be undone by the fluid motions.
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Highly Accurate Simulations and Benchmarking of Molecule-Surface Reactions
Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.
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Europese Energie, Omgeving en Gezondheid
Het onderzoek binnen deze pijler richt zich op de systeemrisico's waarmee Europese samenlevingen worden geconfronteerd en die de kwaliteit van leven van Europese burgers beïnvloeden.
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Improvisations in phototrophy
Microbial rhodopsins are photosensitive pigments implemented in the growth and adaptation of a large population of microorganisms.
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Orion's Dragon and Other Stories
Stellar feedback is a crucial ingredient in the evolution of galaxies.
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The dust and molecular gas in the torus of NGC 1068
An Active Galactic Nucleus (AGN) is a highly luminous region at the center of a galaxy, powered by the accretion into a supermassive black hole and emitting energy from radio waves to gamma rays, often outshining the host galaxy.
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Seks in de Renaissance. Standjes en standpunten in de tijd van Da Vinci (en wat we daar nu van kunnen leren)
Hoe dacht men tijdens de Renaissance over seks? Den Hartog neemt je mee op een tocht vol vervreemding én herkenning, en laat je met een nieuwe blik kijken naar seksuele opvattingen van toen en nu.
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Reactivity of cobalt(II)-dichalcogenide complexes: correlation between redox conversion and ligand-field strength
The redox-conversion reaction of metal-disulfide and metal-thiolate complexes are important, as they may shed light on electron-transfer reactions that often occur in Nature.
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Hydrocarbons in interstellar ice analogues: UV-vis spectroscopy and VUV photochemistry
Promotor: Prof.dr. H.L.V. Linnartz
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Into the Darkness: Forging a Stable Path Through the Gravitational Landscape
In this thesis we study the landscape of gravitational models which modify GR by introducing an additional scalar degree of freedom (d.o.f.) to source Cosmic Acceleration.
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Electrochemical and surface studies of the effect of naphthalene-based additives on tin electrodeposition
Tin electrodeposition applications have rapidly evolved in the past 25 years.
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Reconstruction Methods for Combined HAADF-STEM and EDS Tomography
The research in this thesis is focused on tomographic reconstruction based on two imaging modalities in electron microscopy.
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Aria of the Dutch North Sea
Promotores: C. J. ten Cate; M. A. Ainslie. Co-promotor: W. Slabbekoorn
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Foam rheology near the jamming transition
Promotor: Prof.dr. M.L. van Heck, Co-Promotor: B.P. Tighe
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Semi-partitioned Scheduling and Task Migration in Dataflow Networks
Promotor: Ed F. Deprettere, Co-promotor: Todor P. Stefanov
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Disorder and interactions in high-temperature superconductors
This thesis is devoted to an in-depth examination of the various effects of disorder in the cuprate high-temperature superconductors.
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Solvent tolerance mechanisms in Pseudomonas putida
Bacterial biocatalysis constitutes a sustainable alternative for high-value chemicals production by enabling the utilization of renewable feedstocks.
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eV-TEM: Transmission Electron Microscopy with few-eV Electrons
Electron microscopy has become an extremely important techniquein a wide variety of elds.
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Strategies for braiding and ground state preparation in digital quantum hardware
With the help of quantum mechanics, digital quantum hardware may be able to tackle some of the problems that are too difficult for ordinary computers. But despite these expectations and the ongoing effort of the research community, reliable quantum computers are not yet realized in a lab setting.
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Nuclear Quantum Effects in Solid Water
Ice, the solid state of water, plays an important role on our planet as well as the entire universe.Despite the fact that an individual water molecule has a very simple structure, its chemical bonding in the solid phase can be surprisingly complex.
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Dormancy in stochastic interacting systems
Organisms often need to adapt more efficiently and devise new strategies for surviving difficult ecological circumstances.
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Surface Temperature and the Dynamics of H2 on Cu(111)
Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…
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Chemical tools to study lipid signaling
Synthesis and application of chemical biology tools to study immunomodulatory signaling lipids.
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Development of highly accurate density functionals for H2 dissociation on transition metals
Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).
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Spectral imaging and tomographic reconstruction methods for industrial applications
Radiography is an important technique to inspect objects, with applications in airports and hospitals. X-ray imaging is also essential in industry, for instance in food safety checks for the presence of foreign objects.
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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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Vervolgopleidingen
Na het afronden van de bacheloropleiding volgen verreweg de meeste studenten de masteropleiding. De Universiteit Leiden stimuleert studenten om na hun bacheloropleiding door te gaan met de masteropleiding.
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The parabolic Anderson model on Galton-Watson trees
The parabolic Anderson model (PAM), which is the Cauchy problem for the heat equation with random potential. The PAM is a mathematical model that describes how mass (i.e. matter or energy) flows in a medium in the presence of a field of sources and sinks.
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On the optimization of imaging pipelines
In this thesis, topics relating to the optimization of high-throughput pipelines used for imaging are discussed. In particular, different levels of implementation, i.e., conceptual, software, and hardware, are discussed and the thesis outlines how advances on each level need to be made to make gains…
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Fundamental research on the voltammetry of polycrystalline gold
Voltammetry plays a crucial role in modern scientific research by offering valuable insights into the electrochemical properties of materials, with wide-ranging applications in fields such as materials science, energy storage, corrosion studies, and sensor development.
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Thiosugars: reactivity, methodology and applications
Carbohydrates, alongside proteins and nucleic acids, constitute a crucial and versatile family of biomolecules present in all life forms. They manifest as monosaccharides, oligosaccharides, and polysaccharides, covalently bonded to proteins and fats. Carbohydrates are integral to plant and arthropod…
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Applications of AdS/CFT to strongly correlated matter: from numerics to experiments
What physics controls the properties of quantum matter, such as how electrons flow inside high-temperature superconductors? This question has captivated the physics community and industry for decades, in part due to the great technological potential such materials have, but also because they have resisted…
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‘Voedsel is onbetwistbaar een grote factor in ons watergebruik’
Van waterzuiveringsinstallaties tot een lekkere warme douche, de CO2-uitstoot ten gevolge van het watergebruik in de VS staat gelijk aan dat van 50 miljoen auto’s die een jaar lang rondrijden. In The Washington Post raadpleegt journalist Tik Root verschillende experts om te leren over manieren om ons…
- EvoScope
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Kunstmatig brein helpt Gaia satelliet extreem snelle sterren vangen
Met behulp van software die de hersenen nabootst, heeft ESA’s Gaia satelliet zes sterren gespot die met hoge snelheid vanuit het centrum van ons sterrenstelsel naar de rand vliegen. Dit kan essentiële informatie geven over de meest obscure gebieden in ons Melkwegstelsel.
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Onderwijs
Op het Papyrologisch Instituut worden colleges Papyrologie verzorgd voor verschillende doelgroepen.
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Online Biologische Bewegingsstudie
Het begrijpen en evalueren van sociale informatie is fundamenteel voor een gezonde ontwikkeling van baby's. Een belangrijke bron van sociale informatie zijn menselijke bewegingen. Baby's zijn al heel vroeg in staat onderscheid te maken tussen menselijke en niet-menselijke bewegingen, zelfs in het donker,…
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Delta-Institute for Theoretical Physics
Waar gaan de quantummechanica, de relativiteitstheorie en de zwaartekracht elkaar vinden? Wat is het missende stukje? Of is er een compleet nieuwe theorie die alle vormen van materie elegant beschrijft?
- Aflevering 21: Ezra Pound
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Docenten, relax! Hoe leerkrachten interpersoonlijk coöperatief gedrag kunnen uitlokken bij leerlingen die dreigen uit te vallen
De samenwerkingsbereidheid van leerlingen ligt ten grondslag aan een goede relatie tussen leraar en leerling, en is positief gerelateerd aan de betrokkenheid met school van leerlingen. Het bevorderen van samenwerkingsbereidheid in plaats van tegendraads gedrag van leerlingen zou vooral nuttig kunnen…
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Scleral pigmentation leads to conspicuous, not cryptic, eye morphology in chimpanzees
Nieuw onderzoek van de National University of Singapore en Leiden laat zien dat chimpansees en bonobo’s net zoveel contrast in hun ogen hebben als mensen, waardoor ze gemakkelijk de richting van iemands blik kunnen volgen.
- Natuurkunde