Promotor: E. Gittenberger, Co-promotor: B.W. Hoeksema

What impact does a mid-season wildfire have on grassland invertebrates?

Does a mid-season fire impact invertebrate populations?

Promotor: Prof.dr. E. Smets, M. Stech

For many system in statistical physics the microcanonical and canonical ensemble are equivalent in the thermodynamic limit, but not for all.

The goal of the project is the development of stream mining techniques for complex patterns such as graphs. We will try to extend the existing state-of-the-art techniques into two, orthogonal directions: on the one hand, the mining of more complex patterns in streams, such as sequential patterns and…

Protein–protein complexes are formed via transient states called encounter complexes that greatly influence the formation of the stereospecific complex.

Promotor: Peter Stevenhagen

My PhD thesis investigates the ecological significance of resistance against drought-induced air bubble formation inside the water conduits of plants (embolism), and the plasticity and functional aspects of stem anatomical traits in woody and herbaceous species.

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

Lecture

Promotor: H.V.J. Linnartz

Promotor: J.N. Kok, Co-Promotor: A.J. Knobbe

Does the presence of Ring-necked parakeets negatively influence feeding and feeding behaviour of native bird species on artificial bird feeders and if so, what are possible solutions?

In this thesis, I study 1) metabolic alterations in tuberculosis related to wasting syndrome in human patients as well as in rodent and fish animal models. 2) effects of the mutation of the leptin gene on cachexia and diabetes in rodent and zebrafish animal models.

Describe and identify what dosimetry parameters are of importance to interpret dose-response relationships (eg., mortality, sub-lethal, growth or reproduction inhabitation, DNA damage and reactive oxygen species, etc. ) for metal-based nanoparticles? How to develop quantitative models that enable to…

Promotor: Prof.dr. M. Ubbink

Promotors: W. Jiskoot; G.J. Witkamp, Co-promotor: M.R. Nejadnik

Promotor: G.A. van der Marel, Co-promotor: D.C. Codée

PhD Defence

What invertebrates live in the fields and edges? Do the populations change with landscape complexity?

Promotor: Prof.dr. A. Doelman, Co-promotor: V. Rottschäfer

Multicopper oxidase, laccase, can efficiently reduce oxygen to water and are mostly used in the enzymatic biofuel cells.

Hoe kun je leerlingen en studenten leren grip te krijgen op complexe ‘moerassituaties’? Oratie in verkorte vorm uitgesproken door prof.dr.ir. Fred Janssen bij de aanvaarding van het ambt van hoogleraar in de Didactiek van de Natuurwetenschappen aan de Universiteit Leiden op 19 juni 2017.

Promotor: Prof.dr. M. Ubbink

In this thesis chemical and physical processes in the ice mantles on interstellar dust grains are studied.

I will give a general introduction to the field of molecular electronics, its history, methods and challenges. I will also introduce the subject of my investigation and provide a brief outlook to the remainder of our thesis.

Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver

In this thesis, I targeted the orchid genus Lepanthes, one of the six genera of angiosperms that surpasses 1,000 species in the Neotropics, as a study model to investigate the evolutionary processes that promoted species diversifications.

Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.

Do selenium nanoparticles in fish food cause subtle alterations in behavior of fish: effect of particles size and concentration?

This thesis focuses on protoplanetary disks: flattened structures of gas and dust around young stars in which planets are expected to form and grow.

Promotor: P.G.L. Klinkhamer, Co-Promotores: K. Vrieling, P.P.J. Mulder

How can we quantify the density of species within a community through environmental DNA concentrations?

Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: S. Ioppolo, H.M. Cuppen

Promotor: Prof.dr. E.F. Smets. Co-promotores: B. Gravendeel, F. Pupulin

Freshwater is an important resource, but at a great risk of species decline due to habitat loss, pollution and over-exploitation, and invasive alien species.

Het aantal planeten waarop complex leven kan gedijen, is kleiner dan gedacht. Beloftevolle tweelingen van de aarde blijken bij nader inzien slechts beperkt levensvatbaar, stellen astronomen. Ignas Snellen van de Leidse Sterrewacht reageert in DeMorgen op het nieuws.

The logic seems inescapable indeed. The bigger the population, the higher the probability it contains an Einstein. Hence, bigger populations are more likely to develop complex culture.

Promotores: G.A. Persoon, H.H. de Iongh

Plants, are sessile organisms, have developed strategies to adapt to changes in their environment, in part by altering their growth and development.

Taxonomy as a science has accumulated data and knowledge for more than 250 years.

In this thesis, we extend the concept of null models as canonical ensembles of multi-graphs with given constraints and present new metrics able to characterize real-world layered systems based on their correlation patterns.

De eerste ronde gebruikersbijeenkomsten heeft veel input opgeleverd voor de toekomstige Humanities Campus. Het doel: inzicht in de activiteiten die plaatsvinden in de Leer- en Werkomgeving en welke typen ontmoeting er plaatsvinden. Lees in de samenvattingen wat jouw collega’s en studenten hebben ing…

Promotores: J.A.van Veen, P.L.G.Klinkhamer. Co-promotor: E.E.Kuramae