This multidisciplinary minor provides students with knowledge on how and why humans became the way they are. The minor focuses on the evolution of the species Homo sapiens from other hominin lineages and animal ancestors, and on the various factors shaping this process. Not only is human evolution of…

In this course, you will develop an understanding of evolutionary processes and their formative power. You will see how evolution has shaped biodiversity, and continuously influences our daily life.

Galaxies in the local Universe fall into two main categories of spirals and ellipticals. In this Thesis, we explore the structural evolution of galaxies into this bimodal distribution.

Cognitieve psychologie is de studie van mentale functies, waaronder aandacht, geheugen, bewustzijn, emotie, taal en actiecontrole. Het doel is om de complexe relaties tussen brein, cognitie en gedrag te begrijpen.

Balsaminaceae is a diverse plant family characterized by a huge floral morphological diversity.

The soil-dwelling, filamentous bacteria of the genus Streptomyces are renowned for their production of useful secondary metabolites including antibiotics. The work described in this thesis provides new insights on the role and regulation of antibiotic production and resistance in these bacteria.

Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L.B.F.M. Waters (UvA), Prof.dr. C. Dominik (UvA)

Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans

Sustainable energy from wind and solar is most readily available near the sea.

Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.

Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)

The thesis is about the study of shell evolution of the Hydrocenidae of the genus Georissa. This thesis started with a general overview on the evolutionary process of animals due to ecological changes.

Promotor: Prof.dr. H.J.A. Rottgering

Promotor: Prof.dr. M. Schilthuizen

We have examined sequences from the ligand-binding domain of the nicotinic acetyl choline receptor (nAChR) in 148 vertebrate species. We are in interested in this receptor because the α-neurotoxins of many venomous snakes binds to this receptor in its location at the neuromuscular junction in all ve…

One of the most important puzzles in modern astrophysics is the nature of dark matter.

Bicarbonate buffer is largely found in nature due to its ability to regulate pH variations around neutral values. As the pH changes, so does the speciation of the buffer.

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

To gain more insight into the evolutionary development of orchid flowers and fruits, the orchid species Erycina pusilla was studied. The evolutionary origin of the median petaloid sepal, the callus on the labellum, and the stelidia was studied.

Van de patiënten met multipele sclerose (MS) krijgt 34-65% vroeg of laat te maken met cognitieve problemen.

Promotor: H.J.A. Rottgering, Co-Promotor: R.J. van Weeren

This thesis has shed light on some of the ways in which the local electrolyte composition can differ from the bulk and how these changes in the local reaction environment can determine the activity and/or selectivity of two important electrocatalytic reactions, namely, electrochemical CO2 reduction…

Planets are formed in disks of gas and dust around young stars.

The study of orchid flowers, fruits, and inflorescences is crucial due to the remarkable diversity of orchid species and their unique adaptations to pollinators and seed dispersers. However, our understanding of the evolution and development of these organs within the orchid family remains limited.

This thesis investigates the structural evolution and assembly of galaxies since the first few billions years after the big bang.

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

Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.

Promotie

The explosive radiation and diversification of the advanced snakes (superfamily Colubroidea) was associated with changes in all aspects of the shared venom system. Morphological changes included the partitioning of the mixed ancestral glands into two discrete glands devoted for production of venom ormucous…

Promotor: Prof.dr. E.F. Smets

Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)

Promotie

Welke relatie bestaat er tussen verschillende type PLGs en cognitieve differentiatie?

Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling

De ‘juiste’ hoeveelheid dopamine in de hersenen maakt proefpersonen beter in het oplossen van bepaalde cognitieve taken. Dat concludeert Bryant Jongkees op basis van literatuurstudie en experimenten. Promotie op 21 februari.

The logic seems inescapable indeed. The bigger the population, the higher the probability it contains an Einstein. Hence, bigger populations are more likely to develop complex culture.

Een van de eersten die Sander Nieuwenhuis feliciteert met zijn belangrijkste Nederlandse onderzoekbeurs is de historicus Herman Paul, eveneens succesvol in deze Vici-ronde: ‘Leuk om te zien dat het ons allebei is gelukt.’ De Leidse cognitief psycholoog Nieuwenhuis vertelt over de zenuwslopende subsidieaanvraag…

Evolution acts via mutations in amino acid sequences. Substitution of essential amino acids leads to a nonfunctional protein. l.

De sociale ontwikkeling is één van de belangrijkste domeinen van kwetsbaarheid bij Jonge kinderen met een extra X- of Y-chromosoom. Het is daardoor voor hen uitdagender om sociale signalen te signaleren in hun omgeving, die te verwerken en er gepast op te reageren.

Promotor: E. Gittenberger, Co-promotores: L.P. van Ofwegen; B.W. Hoeksema

The origin and evolution of galaxies are closely linked to many different physical phenomena.

Promotor: M.T.M. Koper, Co-promotor: L. Juurlink

We developed the bitterling as a unique, well-studied model organism in the area of the evolutionary ecology of brood parasitism. The bitterling-mussel relationship, interspecific mussel host preference, and mussel gill structure are studied in detail, to help understand the developmental adaptation…

Galaxies in the Universe are distributed along the intricate framework of the Cosmic Web. Groups and clusters of galaxies comprise the densest regions in this network, and therefore, are excellent cosmic laboratories to study different aspects of galaxy evolution in extreme environments.

Evolutie is elke dag om je heen. Dat is de boodschap van de nieuwe Massive Open Online Course (MOOC) van de Universiteit Leiden en Naturalis die 19 september van start gaat.

Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.