598 zoekresultaten voor “us electron” in de Publieke website
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The optimization and scale-up of the electrochemical reduction of CO₂ to formate
Carbon dioxide capture and utilization technologies are necessary to create a truly circular economy. The electrochemical reduction of carbon dioxide to formate is an appealing carbon utilization method as it can be performed at room temperature and pressure, it only requires two electrons, and it has…
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Magnetic imaging of spin waves and magnetic phase transitions with nitrogen-vacancy centers in diamond
The elementary excitations of magnets are called spin waves, and their corresponding quasi-particles are known as magnons. The rapidly growing field of Magnonics aims at using them as information carriers in a new generation of electronic devices, (almost) free of electric currents.
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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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Network flow algorithms for discrete tomography
Promotor: R. Tijdeman, Co-promotor: H.J.J. te Riele
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Atomic Insights into Hydrodesulfurization
Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.
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Surface plasmon lasers
Surface plasmons (SPs) are surface waves at the interface between a dielectric and a good metal, and are formed by the interaction between light and the free electrons at the metal-dielectric interface. They provide strong field confinement for optical fields, opening new possibilities for enhanced…
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Tangent fermions: massless fermions on a lattice
In some condensed matter systems, such as the surface of a 3D topological insulator, the electrons are effectively massless and we must necessarily use the massless Dirac equation to describe them.
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Amerikaans buitenlands beleid en liberalisme
The NWO-funded Vidi project “American foreign policy and liberalism” challenges the idea that the United States has created and sustained a “liberal international order” since World War II. It instead explores the ways in which illiberal ideologies – such as those underpinning racial hierarchy at home…
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Onderzoek naar ferritine: ‘we hopen dat dit uiteindelijk meer inzicht geeft in Alzheimer’
Martina Huber, Jacqueline Labra Munoz onderzoeken de ziekte van Alzheimer. Ze bestudeerden ferritine, ofwel de opslag van ijzer in de hersenen. Een inbalans van ijzer kan een rol spelen bij deze vorm van dementie.
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Cleveringabijeenkomst Leiden: Making Europe Great Again?
Alumni-activiteit
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Nobelprijs Scheikunde voor 3D-beelden van moleculen
De Nobelprijs voor Scheikunde 2017 is uitgereikt aan Jacques Dubochet, Richard Henderson en Joachim Frank, voor hun ontwikkeling van de cryo-elektronenmicroscopie. Met deze techniek kunnen biomoleculen in 3D in beeld gebracht worden, legt hoogleraar Ultrastructuurbiologie Ariane Briegel uit.
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Werking versterkstoffen MRI in kaart gebracht
Speciale versterkstoffen kunnen MRI-scanners honderden malen gevoeliger maken. Leidse fysici hebben nu een methode gevonden om hun efficiëntie te toetsen. Gevoeligere MRI-scans kunnen bijvoorbeeld taaislijmziekte of Parkinson begrijpelijker maken. Publicatie op 18 januari in PCCP.
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Plant occurrence in space and time: the importance of land use, habitat structure, and pollination mode
Plant diversity is essential for us and our planet as it sustains the stability of our ecosystems, provides vital materials and food to us and supports many ecosystem services.
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Probing Gravity at Cosmic Scales
The theoretical explanation of cosmic acceleration is nowadays one of the biggest puzzles in cosmology.
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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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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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Radio galaxies near the epoch of reionisation
This thesis explores the theoretical and observational properties of distant massive galaxies that harbour active black holes in their centres and shine brightly at radio wavelengths.
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Galactic substructures as tracers of dark matter and stellar evolution
One of the most important puzzles in modern astrophysics is the nature of dark matter.
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Benchmarking Discrete Optimization Heuristics
This thesis involves three topics: benchmarking discrete optimization algorithms, empirical analyses of evolutionary computation, and automatic algorithm configuration.
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Semigroups on Spaces of Measures
Promotor: S.M. Verduyn Lunel, Co-promotor: S.C. Hille
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Online Course The Miracles of Human Language: Introduction into Linguistics
There is no human society that does not employ a rich and diverse language. This course introduces you to linguistics, featuring interviews with well-known linguists and with speakers of many different languages. Join us to explore the miracles of human language!
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What does word stress tell us about morphological structure?
Lezing
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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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Dynamic hydrogels as synthetic extracellular matrices for three- dimensional cell culture
Synthetic hydrogels that mimic the natural extracellular matrix in the biophysical and biochemical cues it provides to cells are in high demand, however the cell phenotypes as they are observed in vivo in numerous cases have yet to be attained.
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T-CYCLE EPR: Development at 275 GHz for the study of reaction kinetics & intermediates
A difficulty of studies on chemical kinetics are the reaction time scales and detection of their intermediates.
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Synthetic, Physical and Computational Chemistry of Propeller-shaped Polycyclic Aromatic Hydrocarbons
This thesis systematically studies the physicochemical properties of non-planar, propeller-shaped, polycyclic aromatic hydrocarbons. The synthesis of several so-called propellerenes is described on a gram scale, using optimized procedures aimed at using less hazardous reagents and reducing the amount…
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FAQ over Health, Ageing and Society
Hieronder kun je een antwoord vinden op de meestgestelde vragen over de master. Wordt jouw vraag niet beantwoord? Neem gerust contact met ons op voor een gepersonaliseerd antwoord via: masterhas@lumc.nl.
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Duizenden beelden van bevroren bacteriën
Hoe detecteren bacteriën signalen uit hun omgeving en hoe passen ze zich daaraan aan? Die vraag intrigeert Ariane Briegel, hoogleraar Ultrastructuurbiologie. Met behulp van nieuwe technieken produceert ze driedimensionale beelden, die nieuwe informatie geven over het zintuiglijke systeem van bacteri…
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Prediction of spatial-temporal brain drug distribution with a novel mathematical model
A novel mathematical model describes spatial-temporal drug distribution within one or more brain units, which are cubic representations of a piece of brain tissue with brain capillaries at the edges.
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The Demographics of Protoplanetary Disks: from Lupus to Orion
The work presented in this thesis is based on ALMA surveys of protoplanetary disks in three star-forming regions: Lupus, OMC-2, and NGC 2024.
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Interstellar Catalysts and the PAH universe
Organic molecules in interstellar space are important as they influence the structure of galaxies and star formations. Studying catalytic processes in space allows us to understand how molecular species are formed and chemically evolved in the interstellar medium and solar system objects.
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Exploring future multi-messenger Galactic astronomy
For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.
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Faculty Rapport
Het doel van dit project is om een duidelijk overzicht te krijgen van duurzaamheidsinspanningen die binnen de faculteiten worden gedaan, evenals het leggen van blijvende verbindingen tussen universiteitsmedewerkers en studenten die bij deze inspanningen betrokken zijn. Het Leiden University Green Office…
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Student for a day English Language and Culture
Studievoorlichting
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Evolutie van bacteriële beweging ontrafeld
Een internationaal team met onderzoekers uit Leiden heeft ontdekt hoe een bacterie een intern systeem heeft herschikt om grip op beweging te krijgen. Gecontroleerde beweging is heel belangrijk bij het binnendringen van een gastheer, met mogelijk ziekte tot gevolg. Publicatie op 27 april in Nature Co…
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Florian Schneider
Gamic Learning in East Asian Studies - Wat kunnen spellen ons vertellen over de manier waarop mensen leren?
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Noisy Patterns: Bridging the gap between stochastics and dynamics
In this thesis, we study travelling waves in stochastic reaction-diffusion equations. We extend techniques from the deterministic theory for travelling waves to apply to the stochastic version, which allows us to compute the stochastic wave speed and shape, and draw conclusions on the stability of the…
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Algorithm for Structural Variant Detection
Structural variants (SVs) are the hidden architecture of the human genome, and are critical for us to understand diseases, evolution, and so on.
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Belastingrecht
Het belastingrecht omvat het gehele fiscale heffingssysteem. Het omvat het nationale en internationale belastingrecht, het Europese belastingrecht, alsmede het formele en het materiële belastingrecht.
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Student for a Day at International Relations and Organisations
Studievoorlichting
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Tien miljoen euro om nieuwe technologieën beschikbaar te maken voor iedereen
De Europese Unie heeft tien miljoen euro geïnvesteerd in het zogeheten iNEXT-Discovery consortium. Het consortium wil innovatief structureel biologisch onderzoek beter toegankelijk maken voor Europese onderzoekers. Ook het Netherlands Centre for Electron Nanoscopy (NeCEN) maakt deel uit van iNEXT-Disovery,…
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Public lecture "Do Smart Devices Make Us Less Smart?"
Lezing
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Net als Nixon: brengen de inlichtingendiensten Trump ten val?
De Amerikaanse inlichtingendiensten brachten president Nixon ten val, en niet de media zoals het algemene beeld is. Andrew Gawthorpe, onderzoeker op het gebied van diplomatie en de Amerikaanse buitenlandpolitiek, hoopt dat de inlichtingendiensten onder Trump ook de juiste keuze maken.
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South American population history revisited: multidisciplinary perspectives on the Upper Amazon
This project, South American population history revisited: multidisciplinary perspectives on the Upper Amazon (SAPPHIRE), investigates population dynamics in western South America on the basis of traces in the geographical, genetic, archaeological, ethnological, and linguistic record.
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Young Academy Leiden
De Young Academy Leiden (YAL) is een selecte groep jonge academici aan de Universiteit Leiden. De YAL, opgericht in begin 2019, dient als platform om enthousiaste en ambitieuze jonge academici (post-PhD), die aan het begin van hun carrière staan, bij elkaar te brengen. YAL-leden vertegenwoordigen…
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OSCoffee: The psychology of biases, and how they influence us as scholars
Lezing
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Evolutionary diversification of Nepenthes (Nepenthaceae)
Promotor: Erik F. Smets, Co-promotores: Barbara Gravendeel, Niels Raes
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Biological model representation and analysis
Promotor: Prof.dr. J.N. Kok, Co-promotor: F.J. Verbeek
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Feedback from deeply embedded low- and high-mass protostars. Surveying hot molecular gas with Herschel
Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: G.J. Herczeg