350 search results for “dark energy” in the Public website
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Functional characterization and unraveling the Gene Regulatory Networks (GRNs) of HD-Zip transcription factor HB40 (and HB22) in Arabidopsis
In this Ph.D. thesis, we characterized two novel upstream regulators of JUB1, HB40, and HB22, in Arabidopsis thaliana. In Chapter 2, we described functions of HB40 in modulating growth and development via the regulation of JUB1 and GA inactivation genes GA2OXs.
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Sterile neutrinos in the early Universe
Promotor: A. Achúcarro, Co-promotor: A. Boyarsky
- Onderzoeksprojecten
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Footprint family: Concepts, classification, integration, and benchmarking against planetary boundaries
How to bring together different footprints into an integrated family and what are the synergies? What are the roles of inventory analysis and characterization in measuring individual footprints and how these affect a footprint family? How to benchmark environmental footprints against related planetary…
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Grote NWO-subsidies voor onderzoek donkere materie en quantumexperimenten
Sterrenkundige Koen Kuijken en natuurkundige Tjerk Oosterkamp krijgen ieder een grote subsidie van NWO. Hiermee gaan zij nieuwe onderzoeksfaciliteiten bouwen.
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AFGEZEGD Tatiana Afanassjewa-Lezing: Alessandra Silvestri over de evolutie van het heelal (Engelstalig)
Lecture
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2016 | Night Cultures: (il)legalities an the politics of life after dark
Course
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Hot Nanoparticles
Gold nanoparticles show surprisingly strong interactions with light in the visible range, which can be divided into scattering, absorption, and photoluminescence.
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On Multifield Inflation, Adiabaticity and the Speed of Sound of the Curvature Perturbations
Promotor: A. Achúcarro, Co-Promotor: G.A. Palma
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Merging galaxy clusters: probing magnetism and particle acceleration over cosmic time
In this thesis, I studied the origin and evolution of the non-thermal radiation in merging galaxy clusters.
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Accurate modeling of the dynamics of dissociative chemisorption on metal surfaces
Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.
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Structured Parallel Programming for Monte Carlo Tree Search
The thesis is part of a bigger project, the HEPGAME (High Energy Physics Game). The main objective for HEPGAME is the utilization of AI solutions, particularly by using MCTS for simplification of HEP calculations.
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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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The environmental rebound effect: a new paradigm for an old challenge. The case of transport eco-innovation
What is the role of the rebound effect in achieving environmental savings from transport eco-innovation? Are traditional definitions of the rebound effect adequate in the context of transformative innovations and multidimensional environmental issues?
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This Week's Discoveries | 4 June 2019
Lecture
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Science & Cinema
In films kunnen de meest wonderlijke acties plaatsvinden. Maar zijn die acties in de 'echte' wereld ook mogelijk? En in hoeverre houden filmmakers ons voor de gek? Tijdens het Leiden International Film Festival komen film en wetenschap samen.
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Focal-plane wavefront sensors for direct exoplanet imaging: Theory, simulations and on-sky demonstrations
One of the key limitations of the direct imaging of exoplanets at small angular separations are quasi-static speckles that originate from evolving non-common path aberrations (NCPA) to which the primary adaptive optics system is inherently blind. The main focus of this thesis is the development and…
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Genetic determinants of cholesterol and energy metabolism: Implications for cardiometabolic health
PhD Defence
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Transport coefficients and low energy excitations of a strongly interacting holographic fluid
PhD Defence
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Alessandra Silvestri over de evolutie van het heelal (Engelstalig)
Lecture, Tatiana Afanassjewa-lezing
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Growing oxide thin films in a Low-Energy Electron Microscope
PhD Defence
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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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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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Hydrocarbons in interstellar ice analogues: UV-vis spectroscopy and VUV photochemistry
Promotor: Prof.dr. H.L.V. Linnartz
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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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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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Improvisations in phototrophy
Microbial rhodopsins are photosensitive pigments implemented in the growth and adaptation of a large population of microorganisms.
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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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HIIT
HIIT staat voor High Intensity Interval Training, een term die we de laatste tijd steeds vaker in de fitness tegenkomen. High Intensity Interval Training of HIIT, is een circuit gebaseerde high energy mix van cardio- en krachtoefeningen. Wetenschappelijk is bewezen dat dit een van de meest effectieve…
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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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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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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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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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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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Orion's Dragon and Other Stories
Stellar feedback is a crucial ingredient in the evolution of galaxies.
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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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Assistant Professor (UD) in the field of "Environment and Society"
Governance and Global Affairs, Leiden University College The Hague
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Nieuwe techniek om geleiding te meten in gestapelde nanomaterialen
Leidse natuurkundigen hebben een nieuwe techniek ontwikkeld om elektrische geleiding te visualiseren in materiaal van gestapelde individuele atoomlagen. Jaap Kautz en Johannes Jobst, die dit jaar de NeVacprijs ontvingen voor hun onderzoek, publiceerden in Nature’s Scientic Reports.
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Weerstand tegen energieprojecten
De energietransitie zal ook de bouw van een grote hoeveelheid energiecentrales met zich meebrengen. Zulke bouwprojecten kan op weerstand van omwonenden stuiten. Universitair docent Bríd Walsh onderzocht hoe een lokale gemeenschap het beste kan worden betrokken bij zo’n bouwproject.
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PhD in physical chemistry: operando spectroscopy on IrOx and RuOx electrocatalysts
Science, Leiden Institute of Chemistry (LIC)
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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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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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The Information Universe
Conference
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‘Investeerdersrisico belemmert de energietransitie’
Met de huidige marktregels is het behoorlijk risicovol om in groene energie te investeren, en dat staat de strijd tegen klimaatverandering in de weg. Dat schrijft milieuwetenschapper Oscar Kraan in zijn proefschrift. Promotie op 25 april.
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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…
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Public Outreach
De Astronomy & Society Group van de Sterrewacht Leiden brengt het publiek in contact met de wonderen van het heelal en deelt wetenschappelijke, technologische, culturele en educatieve aspecten van de sterrenkunde met de samenleving.
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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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Ab initio molecular dynamics calculations on reactions of molecules with metal surfaces
Promotor: Prof.dr. G.J. Kroes