World Teachers Festival 2024 - Celebrating and exploring language, culture, diversity and criticality in teaching and learning

Ontdek het studentenleven bij de MSc Political Theory: Legitimiteit en Rechtvaardigheid aan Universiteit Leiden: studieverenigingen, activiteiten, academische gemeenschap en wonen in Leiden en Den Haag.

M.T.M. Koper, Co-promotor: D.G.H. Hetterscheid

Sphingolipids are important membrane compounds with a variety of functions. In mammalian cells, different enzymes are involved in the metabolism of sphingolipids, but interruption of this metabolism process leads to different diseases.

The thesis explores how interstellar chemistry evolves as a function of time and changing physical architectures during the formation of stars.

Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink

This Thesis shows discoveries in non-linear astrochemical kinetics as well as a deeper analysis of dark clouds chemistry.

This thesis highlights the significant role of surface geometry and oxidation state in determining CO adsorption behavior on copper surfaces.

Soms is een idee op het eerste gezicht zo logisch, dat je je achteraf afvraagt waarom niemand er eerder op is gekomen. Twee onderzoekers van het LACDR hebben samen een volledig synthetisch alternatief voor antistoffen ontwikkeld. Een alternatief dat dezelfde grootte, vorm en werking heeft, maar goedkoper,…

Een nieuwe klasse polymeren is voor het eerst bij patiënten toegepast. Het gaat om de eerste nieuwe hulpstof in decennia die medicijnen beter oplosbaar maakt. Scheikundige Matthias Barz introduceerde de stof in 2014, die een uniek alternatief op de huidige opties biedt.

Onderzoekers vanuit verschillende vakgebieden werken samen om oplossingen te bedenken voor maatschappelijke problemen.

Lezing, Harold Linnartz Astrochemistry Prize lecture

Promotors: Prof.dr. E. Bouwman, Prof.dr. E. Drent

Dissociative chemisorption is an important reaction step in many catalytic reactions.

The goal of this thesis is to understand how interfacial parameters, such as the addition of organic additives, bulk pH or metal cations of the electrolyte, affect the relevant electrocatalytic reactions, i.e. electrochemical CO2 reduction reaction or hydrogen evolution reaction.

This dissertation focused on computational methods based on first principles calculations using the Density Functional Theory (DFT) framework. Emphasis was laid on affordable methods that can provide a tradeoff between computational expense and accuracy.

Light-Harvesting Complex II (LHCII) is responsible for light absorption and excitation energy transfer in plants and photosynthetic algae, while in high light it undergoes conformational changes by which it quenches excitations to prevent photodamage.

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.

Promotor: Prof.dr. H.J.M. de Groot, Co-promotor: Francesco Buda

Dit proefschrift beschrijft een collectie aan alternatieve strategieën voor het begrijpen, ontwerpen en toepassen van lipide nanosystemen, waarin de rol van de bio-nano interacties centraal staan. In het bijzonder wordt gekeken naar de interactie van RNA-lipide nanosystemen, bekend van de toepassing…

Voor de omzetting van zonlicht naar brandstof

This thesis focused on the exploration of monolayer graphene as a membrane in direct methanol fuel cell (DMFC) applications, with improvements achieved through plasma exposure or damage- free chemical functionalization.

This thesis comprises the development of reproducible synthesis procedures for two-dimensional materials (composed of boron, nitrogen and carbon) on different metallic surfaces.

Promotor: Prof.dr. A.G.G.M. Tielens, Prof.dr. C. Dominik (UvA)

A new type of tripodal squaramide-based supramolecular hydrogels is developed and studied.

Molecular complexes can be used as electrocatalysts for oxygen reduction, water oxidation, and/or hydrogen peroxide production.

This thesis focuses on data found in the field of computational drug discovery. New insight can be obtained by applying machine learning in various ways and in a variety of domains. Two studies delved into the application of proteochemometrics (PCM), a machine learning technique that can be used to…

In this thesis we have discussed several parameters that affect the electrochemical conversion of enviromentaly harmful molecules such as nitrates and carbon dioxide to more valuable and less deleterious compounds, in order to cast light onto the mechanism of the reaction to achieve an efficient and…

This doctoral thesis is an effort to understand how lipid phase-separation induced by diacylglycerol analogues in lipid-based nanoparticles affects their in vivo behavior, leading to specific nanoparticle-protein communications and selective cell targeting.

The aim of this thesis is to develop and study a robust and adaptable scaffold for supramolecular polymer self-assembly in water.

This dissertation contains four works during my PhD. Different biomaterials have been designed based on coiled-coil peptides. These biomaterials have a range of applications, inclusing drug delivery, cell sorting to cell-cell fusion.

BlaC is the β-lactamase of Mycobacterium tuberculosis. We show that it can recover from inhibition by clavulanic acid and that phosphate helps it do so.

The main goal of this thesis is to achieve advanced control of binding properties in bis-pyrrolic and macrocyclic pyrrolic receptors by light.

This thesis covers various applications of topology in condensed matter physics and quantum information.

This thesis focuses on the synthesis, characterization and performance towards CO2 electroreduction of mono and bi-metallic particles based on p-block metals

A structural investigation of coiled coil peptides used as membrane fusogens, mimicing naturally occuring coiled-coil fusion proteins. Synthetic modifications have been made to alter lipid attachment, secondary structure and to insert photoactive azobenzene moieties for active control over coiled coil…

Promotor: Prof.dr. J.P. Abrahams

Promotor: Prof.dr. H.L.V. Linnartz

Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.

Quantum computers are a proposed fundamentally new type of computer. They aim to perform some computations much faster than previously possible by exploiting phenomena at the quantum scale, called superposition and entanglement.

The Low Frequency Array enables studies of low-frequency carbon radio recombination lines with unprecedented sensitivity, spectral and spatial resolution.

Promotor: A.P.IJzerman Co-promotor: A. Bender

Promotor: G. J. Kroes

This thesis explores squaramide-based supramolecular polymers and hydrogels, enhancing their mechanical strength for 3D cell culture.

Prof. Hermen Overkleeft is bekroond met de 2015 Jeremy Knowles Award van de Royal Society of Chemistry voor zijn innovatieve en inzichtelijke ontwikkeling van activity-based eiwit probes voor de beeldvorming en de identificatie van enzymen in gezondheid en ziekte. Van Overkleeft is in Leiden verbonden…

Hoe helpen lipasen in Mycobacterium tuberculosis de bacterie te overleven, en kunnen we deze enzymen gebruiken als doelwit voor nieuwe antibiotica?

Nog altijd lukt het niet om alle kankerpatiënten van de juiste behandeling te voorzien. Oncode Accelerator wil daarom de manier waarop we kankerbehandelingen ontwikkelen innoveren: binnen het programma wordt de patiënt centraal gesteld. Universiteit Leiden en LUMC gaan hier samen met andere partijen…

Om goed onderbouwde besluiten over complexe onderwerpen zoals het klimaat, recht en gezondheid te kunnen nemen, zijn wetenschappelijke resultaten van groot belang. Maar wetenschappelijke resultaten bevatten altijd een mate van onzekerheid. Binnen het onderzoek Communicatie over onzekerheden wordt onderzocht…