Een nieuwe manier om het licht van verre planeten te analyseren zou ons bewijs kunnen leveren van buitenaardse planten, schrijft astronomie-auteur Colin Stuart in de New Scientist. In zijn artikel beschrijft hij het werk van de groep van de Leidse astronoom Rob van Holstein. Dit team detecteerde afgelopen…

Planeten in andere zonnestelsels bevatten waardevolle informatie over het ontstaan van planeten en leven. Promovenda Yapeng Zhang heeft hun atmosferen bestudeerd door te kijken naar hun kleinste onderdelen: isotopen. Met haar onderzoek hoopt ze te ontdekken wat ons eigen zonnestelsel uniek maakt.

Van onderwijs tot een verrijkende ervaring

Wat doet de Universiteit Leiden om haar gebouwen en campussen toekomstbestendig en onafhankelijk van fossiele energie te maken?

What is the effect of light at night on plant phenology and physiology, and how does this affect plant interactions with other species?

Promotor: Prof.dr. E. F. van Dishoeck

Promotor: W. Jiskoot, Co-promotor: A. Hawe

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

Promotor: R. Gill, Co-promotor: P. Massart

G protein-coupled receptors (GPCRs), one of the largest families of membrane proteins, are responsive to a diverse set of physiological endogenous ligands including hormones and neurotransmitters.

Promotor: C. W. J. Beenakker, Yu. V. Nazarov, Co-promotor: J. Tworzydlo

A remarkable population of short period transiting rocky exoplanets with equilibrium temperatures on the order of 2,000 K has recently been discovered.

Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: M.R. Hogerheijde

Promotores: Prof.dr. J. Aarts, Prof.dr. J.M. van Ruitenbeek

Many galaxy clusters exhibit bright diffuse radio emission that traces the underlying structure of the intracluster medium (ICM).

Promotor: K. Kuijken, Co-Promotor: H. Hoekstra

Promotor: H.J.A. Röttgering, Co-promotor: M. Haverkorn

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.

The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.

Traditionally, vaccines are administered intramuscularly using conventional hypodermic needles, which cause pain and distress. Microneedles are very short needles (smaller than 1 mm) that are practically invisible to the naked eye.

Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.

Promotor: Prof.dr. T. Hankemeier, Co-promotor: Theo Reijmers

Low-carbon (LE) technologies have a significant potential to reduce the total carbon emissions in China.

Promotor: P.J.J. Hooykaas, Co-Promotor: E.J. van der Zaal

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.

A common method to solve expensive function evaluation problem is using Bayesian Global Optimization, instead of Evolutionary Algorithms.

Promotor: Prof.dr. K.H. Kuijken, Co-Promotor: H.Hoekstra

A modern ship design process is subject to a wide variety of constraints such as safety constraints, regulations, and physical constraints.

The function of TLRs in innate immunity has aroused worldwide attention soon after its discovery. Because of the broad functions of TLR2 in innate immunity, the drive for the development of TLR2-targeted vaccines or therapeutic treatments has accelerated in the last decades.

Promotor: Prof.dr. G.P. van Wezel

The Standard Model (SM) of particle physics fails to explain several observed phenomena and is incomplete. In order to resolve this problem, one may extend the SM by adding new particles.

Biological cells, the basic building blocks of all life forms, are surrounded by a lipid membrane. More than half of the membrane is occupied by membrane proteins, which can regulate the cell functionality through specific arrangements.

Dissolving microneedles are a subgroup of microneedle types that completely dissolve within the skin. During this dissolving process the vaccine, stored in the needle matrix, is released into the skin.

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.

Tracing the evolution of the molecular gas content in galaxies is critical for a complete understanding of galaxy formation and evolution, as it provides the direct fuel for star formation. Studies of high-redshift (z>1) molecular gas reservoirs, most commonly traced by carbon monoxide (CO), have seen…

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.

I have studied the hot, diffuse gas around and between galaxies. Specifically, I have used the EAGLE numerical simulations of galaxy formation to predict the properties of this gas, and I have used those properties to predict specific observables: soft X-ray absorption and emission lines.

The aim of the research presented in this thesis was to develop new methods forchallenging systems in liquid-state NMR using paramagnetic effects generated by thetwo-armed probe CLaNP-5.

Building a Deep Cross-media Transfer Network to extract visual relations that relieve the problem of insufficient training data for visual tasks.

Understanding the formation and evolution of planetary systems is one of the most fundamental challenges in astronomy. To directly image and study young exoplanets and the circumstellar disks they form from, dedicated high-contrast imaging instruments are built.

Promotor: Prof.dr. J.P. Abrahams, Prof.dr. M. van Heel

In this thesis we investigate cosmology and the large scale structure of the Universe using cosmological simulations.

Promotores: W. Th. F. den Hollander, M.O. Heydenreich

Streptomyces are bacteria abundant in soil that participate in diverse and complex interactions. These bacteria are the main producers of the antibiotics we currently use in the clinic.

Promotor: J. Aarts

This dissertation presents the results of the importance of creativity for ICT-students of Dutch universities of applied sciences (in Dutch: hogescholen), and the functioning of training courses that aim to promote creative abilities is highlighted.

Promotor: I. A. G. Snellen, Co-promotor: M. A. Kenworthy

Large carnivore population is globally declining as a result of the fragmentation of habitat, large prey depletion and retaliatory killing by pastoralists.

Promotor: T. Hankemeier, Co-promotor: T.H. Reijmers

Het doel van het RAISE Onderzoek is om te onderzoeken hoe veerkrachtige mensen omgaan met stress. We kijken specifiek naar hoe belangrijke biologische systemen, zoals de HPA-as en het immuunsysteem, samenwerken met de hersenen en de sociale omgeving om veerkrachtig functioneren na moeilijkheden in de…