Integrating life cycle assessment (LCA) with life cycle costing (LCC) offers the opportunity to simultaneously analyze the environmental and economic aspects of product alternatives, for the integration of which a unified computational has been proposed by Heijungs et al. (2013) [1]. The project aims…

In this PhD study, I aim to deepen our understanding of the influence of major mycorrhizal types, namely arbuscular mycorrhizae (AM) and ectomycorrhizae (EM), on the global soil carbon cycle and their potential distribution changes under future environmental shifts.

What is the environmental impact, the human health impact and the life cycle and production costs of the lab, pilot and commercial diffusion of nanowires and nanowire-based photovoltaic technologies?

Wat zijn de belangrijkste thema's in het uitvoeren van systemen voor bio-energie ?

Promotores: Prof.dr.G.R. de Snoo and Dr. R. Heijungs

This thesis discusses several questions regarding the double ramification cycle as a Chow class on the moduli space of stable n-pointed genus g curves using tools from so-called logarithmic geometry.

To contribute to the body of knowledge aiming at a better coverage of ecosystem service assessment in LCA studies, this thesis dives into the challenges of incorporating existing ecosystem service methods within the impact assessment phase of the conventional LCA framework.

Are there significant differences among the environmental impacts resulting form the production of Asian aquaculture commodities and what are the main causes for these?

Promotoren: Prof.dr. G.R. de Snoo en Dr. R. Heijungs

The development of new environmentally sound technologies is seen as a key route towards achieving sustainability.

A difficulty of studies on chemical kinetics are the reaction time scales and detection of their intermediates.

LCA has become an important method to study environmental impacts of human activities. Still, there are several methodological issues in LCA that can adversely affect the results reliability.

Promotor: Prof.dr. G.R. de Snoo

How the global distribution of vegetation stands dominated by arbuscular and ectomycorrhizal plants relate to principle aspects of belowground carbon accumulation processes?

Arithmetic geometry concerns the number-theoretic properties of geometric objects defined by polynomials. Mathematicians are interested in the rational solutions to these geometric objects.

The main research question of this thesis was: Can nitrogen cycling on dairy farms on peat soil in the Dutch Green Heart area be improved by adapting management to the nitrogen supply from soil and by using other grassland species and crops without affecting milk production?

Co-ordination Action for Innovation in Life-Cycle Analysis for Sustainability: deepening, broadening and leaping forward the LCA methodology.

De tentamenservice biedt efficiënte en nauwkeurige verwerking van tentamenscores, zowel voor schriftelijke tentamens op papier als voor digitale tentamensystemen zoals ANS en Remindo. Daarnaast geven we begeleiding bij het interpreteren van statistische analyses van tentamenresultaten.

Mycorrhizas are symbiotic associations between soil fungi and most plant species.

Op 24 januari 2024 verdedigde Heike Vethaak het proefschrift 'Empirische analyse van sociale zekerheid, werkprikkels en arbeidsmarktuitkomsten'. Het promotieonderzoek is begeleid door hoogleraar Koen Caminada en hoogleraar Pierre Koning.

Promotor: Prof.dr. J.N. Kok, Co-Promotor: W.A. Kosters

Three major cosmology-focused missions are planned for the next decade: the Euclid space telescope, the Vera C. Rubin Observatory in Chile, and the Nancy Grace Roman Space Telescope.

De auto die we kopen is gemaakt van duizenden componenten, die weer gemaakt zijn van verschillende typen materialen. Deze materialen zijn op zichzelf weer afkomstig van verschillende plekken, worden naar productiefaciliteiten gestuurd en verzameld tot een product. Zodra de auto afgedankt is, moeten…

The expanding population and economic activity are driving up global energy consumption. Simultaneously, there is an urgent need to transition from fossil fuels to renewable sources to mitigate the climate crisis, primarily caused by fossil fuel combustion.

Dit artikel geschreven door Marieke Liem & Alexander Kamprad onderzoekt de relatie tussen terrorisme en interpersoonlijk geweld. Ze voerden cross-nationale analyses uit over de effecten van mortaliteitscijfers voor het terrorisme op moordcijfers. Uit de resultaten bleek dat terrorisme sterk en positief…

What performance criteria does a new technology have to fulfill in order to be added to the list of future energy options and what constraints exist in terms of broad market penetration?

There is a need for alternative methods to replace, reduce and refine (3R) animal experimentation. Combining experimental data from high-throughput in vitro studies with in silico modeling is a promising approach to unravel the effect of chemicals on living cells and to gain a better understanding of…

The transition to electric vehicles (EVs) reduces vehicle emissions to combat climate change. EVs raise concerns regarding the production of lithium-ion batteries and related emissions; while batteries can also provide energy storage services for the electricity system.

In dit artikel presenteren Josien de Klerk en anderen vijf webposts die zijn geschreven door studenten van het Leiden University College in samenwerking met Ububele Early Childhood Community Practitioners (ECCP), in Alexandra, een township in Zuid-Afrika.

Sociale media, zoals Facebook, spelen een zeer prominente rol in nationale en internationale jihadistische bewegingen; zij worden ook gebruikt door veel Syriëgangers.

Material circularity and energy efficiency are highly relevant and intertwined issues for the transition towards a carbon-neutral and circular built environment. In the Netherlands, the building sector has been rendered a priority towards a circular and low-carbon society.

What are the environmental trade-offs for SMEs considering moving from monoculture aquaculture practice towards IMTA? What are the environmental trade-offs comparing IMTA species with their conventional monoculture alternatives?

The power of personalized nutrition lies in being able to conduct clinical research on healthy people while capturing metabolic markers sensitive to the impact of environmental and metabolic stressors (e.g. diet, changing sex hormones and the menstrual cycle).

Promotor: Prof.dr. T.H.W. Bäck

Wetland plants are distinguished from plants of other terrestrial ecosystems by their adaptations to specific habitat stresses, including waterlogged and flooding and the subsequent abundance of phytotoxic compounds.

Rapport in opdracht van het ministerie van Economische Zaken

Michiel Pronk verdedigde zijn proefschrift op 30 maart 2016

Freshwater biodiversity has been threatened by eutrophication due to excessive nutrients in the environment. Releasing the freshwater species from such pressures requires efforts from industry and manufacturers to avoid emissions to vulnerable and high-risk regions.

What are the life-cycle environmental impacts and risks to human health and ecosystems of a III-V/Si PV system? How can these be expected to change when the system is deployed at industrial scale? What are the most favourable recycling scenarios?

How can prospective LCA be streamlined in a way that its practical application in research and technology development increases?

Promotores: B. van de Water; P. Hogendoorn; J. Bovée Co-Promotor: E.H.J. Danen

Dit op casestudies gebaseerde Engelstalige boek over multivariate analyse voor gevorderde studenten in de geesteswetenschappen legt de nadruk op beschrijvende, exploratieve analyses van verschillende soorten datasets uit een breed scala van subdisciplines, waarbij het gebruik van multivariate analyse…

Het ontwikkelen en demonstreren van innovatieve praktijken om met een lage milieu-impact farmaceutica te produceren.

In onze eerdere meta-analyse (Swart et al., 2019) toonden we aan dat door het geven van feedback gericht op tekstbegrip meer van teksten geleerd wordt. Tot dusver werden de verschillen in de effecten van feedback verklaard door verschillen in timing van feedback en de hoeveelheid informatie in de feedback.…

Consequences for sediment stability and seston trapping

Het hoofddoel van dit project is het terugvinden, ordenen en beoordelen van materiaal van de Perzische epische cyclus. Hiermee wordt het vakgebied Iraanse studies verrijkt met de eerste volledige en evenwichtige analyse van vorm en inhoud van de epen binnen de Perzische epische cyclus.

A framework for prospective/ex-ante life cycle assessment (LCA) and ecological risk assessment (ERA) of emerging technologies is developed and applied to a case study of III-V/silicon photovoltaic panels.

Prof.dr. Arjen Doelman is per 1 februari 2009 bij de Faculteit der Wiskunde en Natuurwetenschappen benoemd tot hoogleraar Toegepaste analyse. Hij wordt verbonden aan het Mathematisch Instituut.

Promotor: Prof.dr. G.R. de Snoo, Co-promotor: R. Heijungs