What is movements and corridors of the Bornean pygmy elephant in Sebuku forest? What is the nature of human-elephant conflict in Nunukan District in time and space? What are the diets of the Bornean elephants related to crop raiding?

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.

Do Ethiopian wolves change their diet and foraging strategy in the landscape under different land uses? How land use affect Afro-alpine rodent Communities? How important are Afro-alpine natural resources utilisation for local livelihoods? What is the human perception of conflict in the Afro-alpine a…

How are links between macro-invertebrate diversity and ecosystem functioning influenced by anthropogenic pressures?

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

Plant exudates appeared long time ago in the history line of life in the early Devonian. They are typical saps produced by specialized cells.

Promotor: J. A. Bouwstra

Kros

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

Promotor: Prof.dr. J. den Hertog

Promotores: Prof.dr. F.P. Israel, Prof.dr. P.P. van der Werf

The space between the stars isn't simply a void; it also contains substances such as methanol and carbon dioxide. So far, chemical theories have been unable to explain how these substances originate under circumstances that should make it impossible. Fedor Goumans has been awarded a Veni subsidy to…

Laboratory, observation and modeling work on the dissociation of polycyclic aromatic hydrocarbons in interstellar environments and the formation of new molecular species through the fragmentation process.

Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: G.J. Herczeg

This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).

Promotores: H.A. Udo de Haes, H.H.T. Prins, Co-promotor: H.H. de Iongh

De eerste lichting buitenlandse studenten die het MIND-programma in Leiden volgt is begonnen. Dit studiejaar startte deze internationale, multidisciplinaire master Industrial Ecology, waaraan onder andere de universiteiten van Leiden en Delft meedoen. Twee studenten vertellen over hun ervaringen.

Vinasse is a major by-product generated by the sugarcane biofuel industry. It is a source of microbes, nutrients and organic matter and often it is recycled as fertilizer.

Mechanical forces are known to play an important role in bacterial colonies. In this dissertation, we study the self-organization at various stages of growing bacterial colonies, and focus on the mechanical effects of cell growth.

Hybrid zones occur where two species meet and produce offspring (hybrids). Typically, hybrids show a considerable reduction in fitness. In this thesis two hybrid zones are treated.

Promotor: Prof.dr. M. Schilthuizen

Promotor: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon, Co-promotor: H.H. de Iongh

Ethiopian wolves are endangered diurnal Afroalpine rodent hunters. I investigated the interaction between wolves, rodents and human land use in Borena Sayint National Park (BSNP), Abune Yosef and Aboi Gara in Ethiopia.

Promotor: F.P. Israel, Co-Promoter: R. Meijerink

Planten houden van gunstige microben zoals bacteriën en schimmels: ze groeien beter en worden er gezonder van. Hoogleraar Microbiële Ecologie Jos Raaijmakers speurt naar de juiste microben die gebruikt kunnen worden door de landbouw. Oratie 13 november.

Catalysis is of extreme relevance in the production of everyday materials and plays a central role in many aspects of our life.

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

Promotor: Prof.dr. E.F. Smets, Co-Promotor: L.W. Chatrou

This thesis is about the study of hydrocarbons via infrared spectroscopy.

In the search for sustainable energy solutions, the idea of artificial photosynthesis has been proposed as an approach with which to use water and sunlight to produce hydrogen.