Wanneer en hoe begonnen de eerste mensen vuur te maken? Bewapend met stenen, veenpluis en zwammen probeert archeoloog Andy Sorensen die vraag te beantwoorden. In de februari editie van National Geographic Magazine staat hij en zijn onderzoek centraal in de katern De Ontdekking.

Vroege Neanderthalers in Spanje hielden mogelijk een winterslaap. Archeoloog Gerrit Dusseldorp werd geïnterviewd over dit nieuws in het radioprogramme Nieuwsweekend.

Tijdens de vroege moderne tijd werden veel middeleeuwse manuscripten in stroken perkament gesneden, die opnieuw werden gebruikt om de bindingen van nieuw gedrukte boeken te versterken. Tot voor kort kwamen deze hergebruikte stukjes middeleeuwse manuscripten alleen aan het licht wanneer de vroege moderne…

Congres/symposium, Leiden 2022

Lezing

Promotor: W.T. de Groot

Promotores: H. Schiessel, G.T. Barkema

What is the current relevance of the ethics of counterterrorism and what is the added value of ethics support within the practice of counterterrorism?

Heterogeneous catalysis is essential to many industrial applications. These catalysts are often comprised of supported nanoparticles, which contain various different surface sites.

Promotor: G.P. van Wezel

Self-assembly is an abundant process in nature and is vital to many processes in living organisms.

Promotor: S.M. Verduyn Lunel

In the early universe, the dynamics of the Higgs field can give rise to many interesting phenomena.

Op 28 oktober 2021 verdedigde Hein van der Bruggen zijn proefschrift en behaalde daarmee de doctorstitel.

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

There are many interpretations of quantum mechanics, and ultimately experiments are needed to verify or falsify these interpretations.

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

Agrobacterium tumefaciens, a gram-negative plant pathogen belonging to the family Rhizobiaceae, is the causative agent of crown gall disease, which can affect many plant species including agronomically important ones.

The haplolepideous mosses (Dicranidae) comprise about 4000 species distributed over a wide range of habitats, with great gametophytic and sporophytic morphological variation. Their monophyly is well supported by the results of several molecular phylogenetic studies, which shed light on their relationships…

Despite being the object of intense study, embryonic development has been difficult to model due to a number of reasons. First, complex tissues can be comprised of many cell types, of which we probably only know a subset.

Industrial manufacturing processes, such as the production of steel or the stamping of car body parts, are complex semi-batch processes with many process steps, machine parameters and quality indicators.

Tomography is a powerful technique to non-destructively determine the interior structure of an object.Usually, a series of projection images (e.g.\ X-ray images) is acquired from a range of different positions.

Promotor: H.W. Lenstra

Kidney transplantation is a major advance of modern medicine. This course will give you state of the art updates about what used to be an experimental, risky, and very limited treatment option more than 50 years ago and is now routinely performed in many countries worldwide.

There is no human society that does not employ a rich and diverse language. This course introduces you to linguistics, featuring interviews with well-known linguists and with speakers of many different languages. Join us to explore the miracles of human language!

Het terugdringen van agressie is in de afgelopen jaren in toenemende mate een maatschappelijke prioriteit geworden. Agressie in de vroege kindertijd vergroot de kans op latere agressieproblemen en antisociaal gedrag.

Oratie

uman skin equivalents (HSEs) are in vitro 3D-skin models that mimic many aspects of the native human skin (NHS) and can be a valuable tool.

Promotor: Robert Tijdeman, Co-promotor: Cornelis Kraaikamp

Indo-European is the name of the language family to which English belongs, along with many sub-families such as Germanic languages and Romance languages. In this course, you will delve into the structure and origins of these branches, the oldest languages belonging to the language family, linguistic…

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

The global agri-food system plays a critical role in food security and environmental issues.

In this dissertation, matching, entropy, holes and expansions come together. The first chapter is an introduction to ergodic theory and dynamical systems.

Developing robust algorithms and theory for establishing cause-effect relationships from observational data that scale up to large data sets

To improve cancer treatments, personalized medicine approaches have aimed to identify exactly which mutations are driving tumor development in a given patient and specifically target these mutations using precision therapies.

Over the last decades, aviation safety has improved strongly. As a downside, airline pilots do not have as many opportunities to develop through experience the competencies that they need in critical situations.

Cholesterol influences many pathways, including serving as precursor for adrenal steroidogenesis. Imbalance of cholesterol levels has been implicated in several diseases including cardiovascular diseases and its underlying pathology, atherosclerosis.

In populations with a seed-bank, individuals can temporarily become dormant and refrain from reproduction until they can become active again. The repository of all dormant individuals in the population is called the seed-bank. Seed-banks are observed in many taxa, including plants, bacteria and other…

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

For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.

Time-series forecasting through modelling sequences of temporally dependent observations has many industrial and scientific applications. While machine learning models have been widely used to create time-series forecasting models, creating efficient and performant time-series forecasting models is…

The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…

Editie NL dook in historische gezichtsreconstructies. In het item van 6 oktober 2021 stond naast een middeleeuwse monnik ook Krijn centraal, een neanderthaler waarvan een reconstructie te zien is in het Rijksmuseum van Oudheden. Gerrit Dusseldorp geeft duiding.

Een oeroude kaak bewijst dat de denisovamens, een aan de neanderthaler verwante menssoort, 160.000 jaar geleden in de Himalaya leefde. De Kijk vroeg Roebroeks om een reactie over deze spectaculaire nieuwe vondst.

Een goede taalontwikkeling is van belang voor de cognitieve en sociale ontwikkeling, om te kunnen communiceren en om te kunnen leren. Als de taalontwikkeling niet verloopt zoals verwacht, kan dit allerlei consequenties hebben. Kinderen met een extra X of Y chromosoom hebben een verhoogd risico op problemen…

De nieuwe inzichten omtrent de oorsprong van de mens volgen elkaar in een rap tempo op. Een goede reden voor Scientias om hoogleraar Wil Roebroeks te interviewen. 'Toen ik student was, decennia geleden, maakten we rechte lijntjes naar onze verschillende voorouders en naar dito uitstervende lijntjes.…

De Neanderthaler heeft lange tijd een slechte pers gehad, neergezet als minder intelligent en dommige bruut. Pas in de laatste tientallen jaren blijkt steeds meer uit onderzoek dat de Neanderthaler veel intelligenter was dan lang werd aangenomen. Andrew Sorensen wordt erover geïnterviewd: 'Ze wisten…

Archeoloog Femke Reidsma (33) doet onderzoek naar de rol van vuurgebruik in de evolutie van de mens. Leids Universiteits Weekblad Mare schreef over haar onderzoek. ‘Je wordt beter in een kampvuur aan de gang houden als je het chemische proces begrijpt.’