2,276 zoekresultaten voor “field from co2” in de Publieke website
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Michael Field
Faculteit Archeologie
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Reconstructing Magnetic Fields of Spiral Galaxies from Radiopolarimetric Observations
Promotor: H.J.A. Röttgering, Co-promotor: M. Haverkorn
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Deciphering fermionic matter: from holography to field theory
Promotor: K.E. Schalm, Co-promotor: S.S. Lee
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CO2-Calculator
Development of GHG calculator for bio-electricity and heat.
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Selective and efficient electrochemical CO2 reduction on nanostructured catalysts
Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink
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Chemical reactivity of O2, CO and CO2 on Cu surfaces
Despite the history of studies on methanol formation from CO2, the dominant elementary reaction steps that constitute the chemical mechanism for this catalyzed process are not determined.
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Role of near-surface environment in tuning electrochemical CO2 reduction reaction and H2 evolution reaction
This thesis has shed light on some of the ways in which the local electrolyte composition can differ from the bulk and how these changes in the local reaction environment can determine the activity and/or selectivity of two important electrocatalytic reactions, namely, electrochemical CO2 reduction…
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Electrocatalytic CO2 reduction toward liquid fuels : on heterogeneous electrocatalysts and heterogenized molecular catalysts
With the energy transition toward a renewable energy supply and a CO2-neutral economy, electrification of the energy system is rising in importance, which leads to the challenge of long-term storage of renewable electricity.
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Groups and fields in arithmetic
Promotor: Prof.dr. H.W. Lenstra
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Surface Reactivity of Activated CO2 Selective use of energy in splitting CO2
Juurlink
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Towards efficient low-temperature CO2 electrolysis
Koper Bouwman Bonnet Hetterscheid
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Deterministic equation solving over finite fields
Promotor: H.W. Lenstra
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Effects of heavy fields on inflationary cosmology
Promotor: A. Achúcarro, Co-Promotor: J.W. van Holten
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Global Fields and Their L-functions
Artin L-functions associated to continuous representations of the absolute Galois group G_K of a global field K capture a lot of information about G_K as well as arithmetic properties of K.
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Mersenne primes and class field theory
Promotor: H.W. Lenstra, Jr., Co-promotor: B. de Smit
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Brandstoffen maken uit zonlicht en CO2
Planten zou je kunnen zien als kleine chemische fabrieken, die via fotosynthese chemische stoffen produceren. Als we fotosynthese kunnen nabootsen in een kunstmatig systeem, kunnen we schone brandstoffen en materialen maken uit zonlicht en CO2. Huub de Groot is heel dicht bij het ontwerpen van zo’n…
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The stochastic geometry of non-Gaussian fields
Promotor: V. Vitelli, Co-promotor: J. Paulose
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Spectroscopy of two-field inflation
This thesis is about cosmological inflation and its relation to observations.
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Surface reactivity of activated CO2
Juurlink
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CO2 reduction on post-transition metals and their alloys: an industrial approach
This thesis focuses on the synthesis, characterization and performance towards CO2 electroreduction of mono and bi-metallic particles based on p-block metals
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Manipulating carbon nanotubes Towards the application as novel field emission sources
Promotores: T.H. Oosterkamp, N. de Jonge
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Universal adelic groups for imaginary quadratic number fields and elliptic curves
Promotor: Prof.dr. P. Stevenhagen, Prof.dr. K. Belabas (Univ. de Bordeaux)
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Learning from small samples
Learning from small data sets in machine learning is a crucial challenge, especially when dealing with data imbalances and anomaly detection. This thesis delves into the challenges and methodologies of learning from small datasets in machine learning, with a particular focus on addressing data imbalances…
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On topological properties of massless fermions in a magnetic field
Make more fluid: In condensed matter systems, electrons can acquire unusual properties from their interaction with the atomic lattice.
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PhD candidate in the field of biochemistry
Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)
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Symmetric Diophantine approximation over function fields
Promotor: Prof.dr. P. Stevenhagen, Co-Promotor: J.H. Evertse
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Electrocatalysis of CO2/CO interconversion and Hydrogen Evolution in Bicarbonate Buffers
Bicarbonate buffer is largely found in nature due to its ability to regulate pH variations around neutral values. As the pH changes, so does the speciation of the buffer.
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Electrocatalytic reduction of CO2 and nitrate on immobilized metal porphyrins
M.T.M. Koper, Co-promotor: D.G.H. Hetterscheid
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Unsprayed field margins: effects on environment, biodiversity and agricultural practice
A management strategy has been developed for field margins to reduce pesticide drift to non-target areas and to promote biodiversity on arable land. To this end, 3 and 6 m wide strips along the edges of winter wheat, sugar beet and potato crops have been left unsprayed with herbicides and insecticides…
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Galaxy alignments from multiple angles
Galaxies form and live inside dark matter haloes. As a consequence, they are exposed to the tidal fields generated by the surrounding matter distribution: this imprints a preferential direction to the galaxy shapes, which leads to a coherent alignment on physically close galaxies, called intrinsic a…
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Observing what cannot be observed: computational electrochemistry from carbon to hydrogen
In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.
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enide 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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and the quantum butterfly effect in Black Holes and large N quantum field theories
Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?
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Terrestrial field trials for side-effects of pesticides
The thesis describes terrestrial field trials aimed to detect side-effects of pesticides within the framework of pesticide registration procedures. Field trials were developed using vascular plants Brassica napus and Poa annua, caterpillars Pieris brassicae and effects on decomposition were studied…
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Complex multiplication constructions of abelian extensions of quartic fields
In this thesis, we show that we can use Shimura’s CM theory to explicitly compute the Hilbert class field of any primitive quartic CM field.
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Advances in computational methods for Quantum Field Theory calculations
In this work we describe three methods to improve the performance of Quantum Field Theory calculations.
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Effects of pesticides on aquatic macrofauna in the field
Promotores: W.J.G.M. Peijnenburg, G.R. de Snoo, Co-promotor: M.G. Vijver
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Modular forms of weight one over finite fields
Promotor: S.J. Edixhoven
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Knowledge Extraction from Archives of Natural History Collections
Natural history collections provide invaluable sources for researchers with different disciplinary backgrounds, aspiring to study the geographical distribution of flora and fauna across the globe as well as other evolutionary processes.
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High-resolution integral-field spectroscopy of exoplanets
This thesis describes the implementation and on-sky demonstration of high-resolution integral-field spectroscopy for extreme adaptive optics systems that are used to find and characterize exoplanets.
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Insights into the mechanism of electrocatalytic CO2 reduction and concomitant catalyst degradation pathways
This work describes several studies into the electroreduction of carbon dioxide (CO2RR), both regarding mechanistical aspects and catalyst stability considerations. Mechanistic insights into carbon-carbon bond formation on a silver catalyst are described in Ch 2, were we find an acetaldehyde-like surface…
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Clues from stellar catastrophes
Promotores: S.F. Portegies Zwart, E. M. Rossi
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From every angle
Promotie
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Neutrinos From the Milky Way
Promotor: Prof.dr. M. de Jong
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Leidse vinding haalt CO2 uit de lucht
CO2-reductie door de CO2 eenvoudig met een soort oplaadbare batterij uit de lucht te halen, lijkt pure science fiction. Toch hebben Leidse scheikundigen zo’n ‘batterij’ – een gele koperoplossing die in contact met lucht groenblauw wordt – ontdekt. Hierover publiceren ze in Science van vrijdag 15 jan…
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Goedkope katalysator zet CO2 om in aardgas
Een Leidse ontdekking helpt om van CO2 aardgas te maken én om duurzame energie op te slaan. Onderzoek van professor Marc Koper en promovenda Jing Shen maakt duidelijk hoe dit proces goedkoop en controleerbaar kan verlopen. Nature Communications 1 september 2015.
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The electrode-electrolyte interface in CO2 reduction and H2 evolution: a multiscale approach
Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.
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Microcoil MRI of Plants and Algae at Ultra-High Field: An exploration of metabolic imaging
This thesis investigates the relations between metabolism and anatomy through the use of Magnetic Resonance Imaging (MRI).
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The holographic glass bead game: from superconductivity to time machines
Promotores: Prof.dr. J. Zaanen, Prof.dr. K.E. Schalm
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Monitoring Alzheimer's disease in transgenic mice with ultra high field magnetic resonance imaging
Promotor: Prof.dr. H.J.M de Groot, Co-Promotor: A. Alia