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

Actinobacteria are Gram-positive bacteria that have a complex multicellular life cycle and are well known for their ability to produce a wide range of bioactive natural products (NPs).

Promotor: M.A.G.J. Orrit

Lecture

Plastic pollution is a major global problem. In Geneva, world leaders are discussing a possible plastics treaty. Lecturer Esther Kentin talked to Dutch news platform NU.nl about the UN summit: ‘A treaty is only a small part of the solution.’

On 15 March 2023, the GLOBTAXGOV team at Leiden Law School met with the Inter-American Center of Tax Administrations (CIAT) to explore opportunities for cooperation, to discuss the needs of tax administrations in the field of international taxation and evaluate ongoing projects and new initiatives where…

Despite the promising effects of technology in assessment and treatment, the actual use of novel technologies in juvenile justice context remains limited. We want to inspire researchers to develop and investigate technological applications for assessment and treatment for justice involved youth.

Er zijn structurele (sociale) veiligheidsproblemen in vrouwengevangenissen, blijkt uit onderzoek van Leidse onderzoekers Esther van Ginneken en Yara Abbing. Universitair hoofddocent Van Ginneken sprak met Trouw: ‘We moeten macht, seksualiteit en discriminatie bespreekbaar maken.’

Prison staff are working under high pressure. The current proposal for cell sharing is the final straw. Associate Professor Esther van Ginneken appeared on Dutch news programme ‘Nieuwsuur’: ‘Serious incidents have occurred, including the murder of a cellmate.’

Researchers at the Institute of Criminal Law and Criminology - Paul Nieuwbeerta, Anouk Bosma, Esther van Ginneken, Hanneke Palmen and Maria Berghuis - have received 800,000 euro from the Dutch Custodial Institutions Agency (DJI) of the Ministry of Security and Justice to investigate living conditions…

Last week Esther Kentin participated in the Second Meeting of the Ad Hoc Open-Ended Expert Group on Marine Litter and Microplastics organized by UN Environment in Geneva.

On Wednesday 31 August 2022, the graduation ceremony of the BSc Security Studies took place. The ceremony was opened by programme director Daan Weggemans.

PhD defence

Impressions by Martin Küster, Master of Arts.

How do digital technologies affect both Asian societies and the methods we use to study them? Conference in Leiden on 23-25 May 2016. Deadline abstract submission: 15 February 2016.

Conference

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.

Lecture, LUCIS What's New?! Series

Can SMILE, our multi-component intervention, which combines cognitive-behavioural therapy for insomnia, mindfulness, stress, and lifestyle components, improve sleep quality? Can it also improve mood and quality of life and prevent depression and anxiety in the long term?

On Wednesday, September 17, 2025, Prof.dr. Sarah Cramsey convened a book manuscript event at the beach of Wassenaar near Leiden to discuss her new book 'Caring through Catastrophe: Jewish Children and their Caretakers during the Holocaust' which is under contract with Indiana University Press.

Lecture, Research Seminar Medieval and Early Modern History

Promotor: M. Ubbink, Co-promotor: G. Siegal

On 10 June 2021, Merinda Stewart defended her thesis 'Freedom of Overflight: A Study of Coastal State Jurisdiction in International Airspace'. The doctoral research was supervised by Prof. P.M.J. Mendes de Leon en Prof. J.J. Rijpma.

With the recent rise and fall of IS, academics and policy makers around the world are expressing concerns about the fate of children of former foreign fighters. Will they follow in their parents’ footsteps? In this paper, Layla van Wieringen, Daan Weggemans and Marieke Liem argue that in light of this…

The main aim of my Ph.D. thesis is to further explore the value of using early developing zebrafish larvae (up to 5 dpf) as a model to study anxiety-like behaviour and their pharmacological modulation with drugs.

How do educational philosophies, discourses and practices spread around the globe, and how are they transformed and adapted locally?

In this thesis we have discussed several parameters that affect the electrochemical conversion of enviromentaly harmful molecules such as nitrates and carbon dioxide to more valuable and less deleterious compounds, in order to cast light onto the mechanism of the reaction to achieve an efficient and…

Inspectors at the Dutch Tax and Customs Administration can require people to provide more information relating to their tax returns. Esther Huiskers-Stoop from the Tax Law department investigated the rules in place to protect us when we are required to provide information to the tax authorities.

On Thursday 14 March, the third ILS Lunch Seminar of this year took place. In this well visited seminar, Nienke van Heek and Esther van Ginneken gave two very insightful presentations on their respective research topics.

Voormalig demissionair staatssecretaris van Fiscaliteit en Belastingdienst Marnix van Rij gaf op 17 juni in samenwerking met universitair docent Esther Huiskers-Stoop een gastcollege over belastingrecht en duurzaamheid. Deze lezing werd op initiatief van student Darya de Wilt georganiseerd.

“We are proud and happy to receive this grant. It will enable us to do truly innovative fundamental research with a direct link to practical applications.” Michiel Westenberg is looking forward to investigate the effects of age and social anxiety on eye-contact. Together with Esther van den Bos he has…

Op de dag van de duurzaamheid van 10 oktober startte de 'Billiecup' pre-pilot op de Faculteit der Rechtsgeleerdheid. Aanwezig waren 'plastic soup surfer' Merijn Tinga, Bart Hemmes van het Leiden University Green Office (LUGO) en Esther Kentin, docent bij instituut Metajuridica & projectleider Leiden…

University lecturer Casper Wits wrote an opinion piece on the ongoing diplomatic tensions between the European Union and China for POLITICO. In this article, he argues that 'rather than shrinking from the fight, the EU must develop a China policy that prioritizes progressive values and human rights.…

On Friday 7 March 2025 Adam Knight successfully defended a doctoral thesis and graduated.

Over hundreds of thousands of years, our region witnessed the comings and goings of various types of hominin. This depended on the temperature as ice ages alternated with warmer periods. In ‘De eerste mensen in de Lage Landen’ (‘The First Humans in the Low Countries’) Leiden archaeologists Yannick Raczynski-Henk…

Paolo Sartori is a Senior Fellow at the Institute of Iranian Studies of the Austrian Academy of Sciences, Vienna. In Leiden he will deliver one guest lecture on Twilight of the Persianate: The Vernacularization of Central Asia (18th - early 20th Centuries) on 12 April and a masterclass on How can we…