The external tissues of plants and animals are colonized by microbial communities termed microbiota. When organisms are exposed to environmental pollutants, these substances will therefore encounter microbiota at the exposure interface.

Promotor: Prof.dr. M. Danhof

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

Promotor: Prof.dr. H.S. Overkleeft

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.

The prevalence of obesity (BMI >40 kg/m2) has increased rapidly over the recent years, not only in adults, but also in children and adolescents.

The soil ecosystem consists of the largest reservoir of biodiversity on Earth.

This PhD-thesis analyses the relationship between the parties’ choices in the CPB Netherlands Bureau for Economic Policy Analysis’ assessments of the election manifestos and coalition agreements over the period 1986-2017, and tries to explain this relationship.

A tidal basin is an inland sea which is almost entirely enclosed by land and connected to the open sea by a tidal inlet. Through the tidal inlets interaction takes place between the tidal basin and the open sea.

The European Council and the European Commission have a similar role in agenda setting. Both place issues on the EU agenda. However, these institutions have distinct designs. They have different political attributes (the European Council has considerably more political authority) and information-processing…

This thesis focuses on the social dimensions of crane and wetland conservation in rural landscapes in Kenya, Uganda and Zimbabwe.

Marine sponges are important members of reef ecosystems, as they play ecological roles that are essential for the health of the reef.

Promotores: Prof.dr. J. A. Bouwstra, Prof.dr. W. Jiskoot

When observing star-forming galaxies, we are not only seeing stellar light, but we also see how this interacts with galactic gas and dust. This thesis contains studies of the stellar, nebular and dust properties of low mass star-forming galaxies.

The research provides insight into disease behavior in both rural and semi-urban areas in Serengeti in Tanzania.

Synthetic microswimmers take an important place within the interdisciplinary field of active soft matter.

Promotor: Prof.dr. E. Bouwman, Co-promotor: S. Bonnet

The energy system is at the heart of two of the greatest challenges of the 21st century: decreasing CO2 emissions to meet the ambitions of the Paris agreement while fulfilling the growing energy demand associated with the economic aspirations of a growing world population.

This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.

Pulsars were first discovered in 1967 and since then the population has grown and expanded over several wavelengths.

1: What is the relative importance of alfa and beta biodiversity in polar ecosystems, and how does intraspecific variation influence this? 2: How can we use remote sensing to determine functional biodiversity (within communities) in polar ecosystems? 3: Temporal and spatial scales of functional biodiversity:…

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

Sorghum (Sorghum bicolor) is a major cereal crop that millions of subsistence farmers in Sub-Saharan Africa (SSA) rely on. However, the scourging impact of the root parasitic weed Striga (Striga hermonthica, a.k.a. “witch-weed”) has remained a major constraint hampering the productivity of sorghum in…

De onderzoeksgroep Organizational & Entrepreneurial Behavior onderzoekt het gedrag van individuen en groepen die in organisaties werken, organisaties starten, of organisaties leiden, met als doel om organisatorische praktijken te informeren. Door zich te concentreren op het gedrag van (groepen) werknemers,…

Neurolaw is een relatief jonge discipline, waarin de impact van de neurowetenschappen op het recht, de juridische praktijk en de criminologie wordt onderzocht. De actuele ontwikkelingen binnen de neurowetenschappen (neurobiologie, -psychologie en -psychiatrie) hebben de betekenis van onderzoek op dit…

Goed werkgeverschap is net als goed werknemerschap een open norm. Daarmee is het onduidelijk en onzeker waar werkgevers zich op dienen te richten en welke rechten (en plichten) werknemers hebben in dat verband. De doelstelling van dit onderzoek is om invulling te geven aan de norm goed werkgeverschap…

Dr. Helen Pluut heeft een artikel gepubliceerd in het gerenommeerde tijdschrift Organizational Behavior and Human Decision Processes (OBHDP). Dit in samenwerking met Remus Ilies (National University of Singapore), Petru Curşeu (Open Universiteit en Babeş-Bolyai University) en Yukun Liu (University of…

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?

This dissertation presents a new perspective on the life, work and character of the Dutch physical chemist Jacobus Henricus van ’t Hoff, first recipient of the Nobel Prize in Chemistry, and one of the most important and colourful scientists in Dutch history. The image of Van ’t Hoff that emerges from…

Description of Biotic ligand models: making an inventory of available models & assessment of the variability of the predicted HC5 using the BLMs in different Dutch water types (2005 - 2007)

This report investigates the different approaches in the authorization process of GMOs for commercial use in the European Union and the United States of America. Three main aspects are considered and analyzed as potential causes of differences in the authorization process of GMOs for commercial use.…

Can we distinguish the effects of pesticides from other abiotic and biotic factors that occur in the field? And how do these factors interact with pesticides?

Subproject of the ERC project 'Challenging the Liberal World Order from Within: The Invisible History of the United Nations and the Global South'.

In de opleiding Chinastudies kun je de Chinese regio in alle opzichten bestuderen, van taal tot economie en van geschiedenis tot literatuur. Met kennis van de taal als basis kun je doordringen tot alle mogelijke aspecten van zowel het moderne als het premoderne karakter van dit machtige land. Vanaf…

Examining the sustainability aspects of biotechnology, especially those related to the production of ethanol from biomass.

Development of indicators to assess decoupling of economic development and environmental pressure in the EU-25 and AC-3 countries.

Subproject of the ERC project 'Challenging the Liberal World Order from Within: The Invisible History of the United Nations and the Global South'.

Somatische symptomen, zoals pijn, jeuk en vermoeidheid, blijken in twee richtingen samen te hangen met psychische symptomen. Hoewel acute somatische symptomen bepaalde adaptieve eigenschappen hebben, kunnen chronische symptomen in plaats daarvan leiden tot verstoring van dagelijkse activiteiten en vermindering…

Of je wordt toegelaten tot een master in de Politieke Wetenschap hangt af van je vooropleiding en je beheersing van de Engelse taal. De betreffende criteria vind je hieronder.

Een nieuw artikel van Dr. Helen Pluut zal verschijnen in European Journal of Work and Organizational Psychology. Het artikel, dat samen met Marion Büttgen en Jan Ullrich van de Universiteit van Hohenheim is geschreven, heeft implicaties voor organisaties die een duaal laddersysteem hanteren. Zulke systemen…

Lecturer Andrew Gawthorpe of Leiden University discusses in The Conversation the growing influence of far-right activist Laura Loomer in Donald Trump’s administration.

Promotie

Medieval Memoria Research has published its final newsletter. This special MeMO-themed issue contains several articles about the MeMO project and its influence on the work of various scholars.

The "Cognitive Turn" and the Middle Ages - There is an increasing interest in the cognitive sciences and how knowledge from this area influences literary studies, history, art history, and studies in material culture. This meeting seeks to discuss the possibilities, but also the limitations of incorporating…

Rachel Plak was tijdens de Autism Awarness Week te gast bij Science071 en vertelt daar over de invloed van de lockdown op kinderen met autisme.

Orthopedagogen Adriana Bus, Carienke Kegel en Heleen van den Berg hebben van de gemeente Leiden een subsidie van €120.000 gekregen voor het project ‘De eerste 30 miljoen woordjes’. Met dit project willen zij het taalaanbod dat jonge kinderen krijgen, verbeteren.

Graduate students at Central European University and the University of Vienna invite abstracts from MA and PhD students in the fields of Late Antique and Byzantine Studies for a graduate conference with the theme 'Receiving Byzantium, Byzantium Receiving' (16-17 May 2025, Vienna).

Description of 20th century changes in the Dutch flora: Description and interpretation (1999 - 2005)

Leids onderzoek naar bestraffing komt tot stand uit verschillende disciplines. Het onderzoeksproject kent een juridische, criminologische, sociaalwetenschappelijke en filosofische invalshoek.

Het vertrekpunt van dit onderzoek is de bevinding dat het menselijk brein vatbaar is voor allerlei denkfouten en vooringenomenheden (biases), die onze percepties kleuren en onze redenaties beïnvloeden, zonder dat we dit bewust doorhebben. Integendeel, mensen hebben veelal het gevoel dat zij slechts…