2,204 search results for “light” in the Public website
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How our single-celled relatives package their DNA
A group of single-celled organisms organises its DNA in a similar way to higher organisms such as plants, animals, and fungi. However, the way packaged DNA is read out differs between the two related groups, Bram Henneman discovered. PhD defence on 5 December.
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Kids become real scientists with Lil'Scientist
Children are perfect scientists: they are bursting with curiosity, they want to know how the world works and they go exploring every day. Yet many children barely get a chance to be engaged in science. A number of scientists from the Young Academy want to change that. They have received 150,000 euros…
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Grand opening of renovated Arsenal building
The renovated Arsenal building, part of the Humanities Campus, has been in use since April 2020. The building was officially opened on Monday 13 June by Martijn Ridderbos, Vice-Chairman of the Executive Board, and Mark Rutgers, dean of the Faculty of Humanities.
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How a very international archaeologist was born
From mandrill teeth to the microstructure of bones: archaeology alumna Simone Lemmers (31) is determined to reveal the past by studying old remains. Her curiosity has led to a very international career, also in the UK, where she witnessed the Brexit referendum.
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Tenth Easter Island conference focuses on reconciliation
The tenth International Conference on Rapa Nui (Easter Island) and the Pacific will be a special edition with a focus on reconciliation. The fatal shooting in 1722 will be remembered, when the Dutch shot and killed ten Easter Islanders. The conference will be held in Leiden from 19 to 24 June.
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Exhibition photographic oeuvre of world traveller Alexine Tinne
In collaboration with the The Hague Historical Museum and photographer Dagmar van Weeghel, Leiden University Libraries (UBL) is the first to present a retrospective exhibition of the photographic oeuvre of Alexine Tinne (1835 – 1869). New research into her life and work is the reason for a reappraisal…
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Searching for an explanation for remarkable behaviour of ice on Earth
If you replace the standard hydrogen atoms in ice with a heavier variant, something odd happens. The volume occupied by the molecules increases by 0.1 per cent. Leiden chemist Jörg Meyer and his colleagues have created a theoretical model that describes this behaviour. Their research appeared on the…
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‘Discoverer of the Year’, best dissertation and Education Award 2014
At the New Year’s reception of the Faculty of Science on 6 January, it was announced that Annelien Zweemer, Leiden Academic Centre for Drug Research, has been awarded the ‘Discoverer of the Year 2014’ prize. Matteo Brogi, Leiden Observatory, wrote the best dissertation in 2014 and Dennis Claessen, Institute…
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Breaking and making the ancestors
Arjan Louwen (MA) will start a PhD research project on the social and ideological aspects of Late Bronze Age and Early Iron Age cremation graves in continental Northwest Europe (1100-500 BC): Breaking and making the ancestors. Making sense of the inconspicuous 99% of urnfield graves.
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The Middle East doesn't exist
On Friday 2 October journalist Sander van Hoorn starts his lecture series ‘The Middle East doesn't exist’, which was organised by the Leiden University Centre for the Study of Islam and Society (LUCIS). ‘If all goes well, people will understand the Middle East that bit less after my lectures.’
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Tracking the origin and evolution of molecules in space
How do molecules originate and evolve in space? And how does that ultimately determine the chemical composition of planets and their atmospheres? The Dutch Astrochemistry Network (DANIII) receives 1.6 million euros from NWO to find out. A large group of Leiden astronomers and chemists is contributing:…
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Cucurachi, Behrens and Matthee are teacher, discoverer, and PhD candidate of 2018
Environmental scientists Stefano Cucurachi and Paul Behrens and astronomer Jorryt Matthee have received prizes during the New Year's reception of the Faculty of Science on Tuesday 8 January. In addition, Kavli Prize winner Ewine van Dishoeck announced a new award.
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Call for papers: The Hague Program for Cyber Norms Conference 2019
The Hague Program for Cyber Norms organises the second conference of an annual series to encourage academic diversity in the study of cyber security. The theme is 'Dealing with Uncertainty'. The conference will take place in The Hague on 5 and 6 November 2019. Deadline submission of extended abstracts…
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Researchers debunk earlier study: babies may not be able to learn language rules after all
For two decades, language experts were certain that babies were able to learn language rules from as young as the age of seven months. However, recent research carried out by a consortium of four Dutch baby labs led by researchers from Leiden cast doubts on this certainty. We spoke to researchers Andreea…
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Multiple star systems: how they got here and why it matters
Disk formation around stars is an important factor in determining whether one or multiple stars evolve. But the big picture of star formation is still far from complete, says PhD researcher Nadia Murillo.
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On the trail of Cleveringa
He is primarily known for his protest speech against the dismissal of his Jewish teacher Eduard Meijers, but who was the man behind this iconic figure? This is the subject of the travelling exhibition 'On the trail of Professor Rudolph Pabus Cleveringa’. The exhibition can be seen from 16 January to…
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Searching explanations for mysterious structures in protoplanetary disks
In the discs of dust and gasses around young stars, mysterious structures occur. Together with professor Ewine van Dishoeck, PhD student Paolo Cazzoletti investigate how we can explain these forms, such as rings, spirals and holes. On 12 December, he will defend his thesis.
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Discoverer of the Year Paul Behrens: ‘We’re running out of time’
Earlier this year, the public voted environmental scientist Paul Behrens Discoverer of the Year 2018. Behrens is an interdisciplinary scientist who wants to understand our impact on the planet. ‘Unfortunately, we are not doing enough. Huge changes are underway and we’re running out of time to avoid…
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Clay tablets dating back thousands of years moved: ‘From receipts to the oldest literary works’
How do you move 3,000 fragile clay tablets that date back thousands of years? This was the challenge faced by staff from the Netherlands Institute for the Near East (NINO). After years of preparation, the Liagre Böhl collection has been moved on trolleys to its new home.
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Still the cat’s whiskers: De Kattekop nursery at 40
If there’s one place at the University where it doesn’t matter where you come from, it’s De Kattekop. This, the University nursery, celebrates its 40th birthday in September. Its history reflects developments at the University. Parents are full of praise for it.
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ERC starting grant for Mariana de Campos Françozo
Mariana Françozo has been awarded a Starting Grant by the European Research Council. With this 1.5 million euro grant Dr. Françozo and her research team will investigate the transformation of the knowledge of diverse Brazilian indigenous peoples into a body of knowledge that became part of the Western…
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The most stable microscope in the world
Making the most vibration-free, cryogenic scanning tunneling microscope in the world. A bold mission, but one that PhD candidate Irene Battisti successfully executed together with the Fine Mechanical Department. The new microscope might shed light on how unconventional superconductivity works. PhD Defence…
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Producing new plants without sowing
Producing offspring of a crop without sowing and that is even bigger than the parent plant. According to Leiden researchers this can be achieved by overstimulating a single gene that rejuvenates cells, including bringing them back to the embryonic phase.
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The winner of the 2018 Faculty Teaching Prize
The Teaching Prize is presented every year during the opening of the Faculty Year as a means of showing our excellent, devoted lecturers the appreciation they deserve. Lecturers are nominated by students, student associations and student members of programme committees. Four were nominated this year…
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Pilgrims came to Leiden for ‘brain training’
The Pilgrims to America exhibition at Museum De Lakenhal inspires reflection. How far do you go in the quest for freedom? It focuses on the Pilgrims’ relationship with the University and which knowledge they took with them from Leiden.
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Using the placebo effect for your health
Even if you have a healthy lifestyle, there's a lot to experience and learn during the Healthy University Week, from 26 to 30 October. Health psychologist Andrea Evers is enthusiastic about the week ahead. She tells us about the programme and gives us a taste of her own talk on what the placebo effect…
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What drives humans? How Mariska Kret manages to touch science with her emotion research
In zoos, at festivals and in a mobile lab at the market: everywhere, Mariska Kret tries to understand human and animal emotions with her distinctive behavioural research. Now she has received the Mercator Sapiens Stimulus of €1 million for her efforts.
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Scientific research with any smartphone camera
Although smartphones and other consumer cameras are increasingly used for scientific applications like citizen science, it’s still difficult to compare and combine data from different devices. PhD student Olivier Burggraaff developed a new easy-to-use standardised method which makes it possible for…
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The real value of the telescope-on-a-plane
Cornelia Pabst is a PhD candidate at Leiden Observatory, whose research is based around primary data taken by instruments onboard SOFIA, an airplane-based observatory on which she has flown multiple times. Pabst explains how this airplane has impacted her research career and gives her views on the ever-present…
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Lewis Borck's Leiden experience: "Theories and methods brought me in first"
One and half years ago, Lewis Borck exchanged the arid and hot Southwest of the USA for the Netherlands. While an expert in Ancestral Pueblo and Hohokam archaeology, he switched to the Caribbean as a researcher in the NEXUS 1492 project. “Theories and methods brought me in first.”
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‘Connect to at least one other person’
At the Faculty of Science, forty per cent of the employees are of a non-Dutch nationality. Amongst PhDs that is even sixty per cent. How are they doing in a time of working at home in a different culture, when travelling is not possible? Astronomer Yamila Miguel is the first in this series to tell her…
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Leiden astronomers calculate genesis of Oort cloud in chronological order
A team of Leiden astronomers has managed to calculate the first 100 million years of the history of the Oort cloud in its entirety. Until now, only parts of the history had been studied separately. The cloud, with roughly 100 billion comet-like objects, forms an enormous shell at the edge of our solar…
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Human rights are like elephants: magnificent, but under threat
What is the current situation of human rights in relation to detention under criminal law and immigration law, now that more and more parties are becoming involved in the administration of detention and crimmigration is on the rise? PhD defence on 21 January 2020.
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Stories from Europe’s borderlands: A podcast series about living with, and resisting against, Europe's borders
In the upcoming months, PhD candidates Neske Baerwaldt (FdR / VVI) and Wiebe Ruijtenberg (FSW / CAOS) will produce the ethnographic podcast series ‘Grensverhalen’. The series will be published online in September, and will be used as teaching material in various courses.
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The 2018 Teaching Prize for the Humanities
Who will win this year’s Teaching Prize in the Faculty of Humanities? Who will the students honour with this coveted token of their appreciation? Read on to get to know four passionate teachers – about minds working at top speed, experimental teaching styles and that satisfying moment when the penny…
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At Beehive it's all about students
Working together, sharing information, communicating and having the same goals. At the official opening on 30 November, biologist Koos Biesmeijer compared Beehive, Leiden University's new student centre in The Hague, with the activities in a real beehive.
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Miraculous mechanism allows plant cells to directionally distribute the growth hormone auxin
Leiden and Austrian researchers have succeeded in further uncovering how a plant cell passes on the growth hormone auxin in a directional manner to the next cell. Three proteins that cling together in a bunch appear to be essential for this important transport process. ‘This discovery solves a crucial…
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Historian cracks Queen Juliana’s unstable image in Hofmans affaire
Queen Juliana was not, as is often claimed, a monarch with an unstable character who was completely under the influence of spiritual healer Greet Hofmans. Furthermore, her religious circle of friends was not a sect with a political agenda. That is what Han van Bree concludes on the basis of a new archival…
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Spinoza prize for Leiden astronomer Xander Tielens
Leiden astronomer Xander Tielens has been awarded a Spinoza prize, the highest scientific prize in the Netherlands. Tielens is Professor in the Physics and Chemistry of Interstellar Space. He studies large and complex, often organic, molecules found in interstellar space. The Spinoza prize carries a…
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On safari in the Bio Science Park
It is a warm day. The sun is shining brightly while biologist Marco Roos makes his way through the bushes towards a peculiar little plant. Insects buzz, birds chirp. In the background rises the LUMC: at the Bio Science Park in Leiden, people and nature come together in a special way.
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Donation of personal archive and collection of Leiden Sinologist Robert van Gulik
The family of the famous diplomat, sinologist and writer Robert van Gulik has donated his personal archive and part of his collection to Leiden University Libraries (UBL). The collection and archive provide insight into the life and work of Robert van Gulik, who became known to the general public for…
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Images of the Indonesian War of Independence, 1945-1949 - Online Exhibition
Starting January 18, the online exhibition Images of the Indonesian War of Independence, 1945-1949 can be viewed via the UBL website. The exhibition is the result of a collaboration between the Royal Netherlands Institute of Southeast Asian and Caribbean Studies (KITLV) and Leiden University Libraries…
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Monique van den Dries' Leiden Experience: 'Usually I end up with (too) many ideas and running projects'
Heritage expert Monique van den Dries has a long history with our Faculty. She did her studies and PhD in Leiden, and before returning to academia in 2008, she worked in heritage management for nearly 15 years. This has, given her a unique insight in the world outside of academia. ‘I want to literally…
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‘Gesloten jeugdhulp mag nooit de enige overgebleven optie zijn’
Gesloten jeugdhulp moet afgeschaft worden, zei Jason (21) onlangs in de landelijke media. Zelf zat hij ruim een jaar in meerdere instellingen voor gesloten jeugdhulp, maar hij werd er naar eigen zeggen niet beter van. Promovendus Maria de Jong-de Kruijf onderzocht het hoe en waarom van deze vorm van…
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Very special ILS Lunch Seminar with Leandro Mancano from the University of Edinburgh
The ILS Lunch Seminar of April will take in a slightly different format, as we have the honour of receiving Dr Leandro Mancano from the University of Edinburgh. He will present his most recent monograph on the European Union and the deprivation of liberty.
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Insolvency fraud strategy can benefit from guidelines for liquidators
The liquidator is, according to the law, the initial designated person to signal and address irregularities in insolvencies. But when tackling fraud costs more than it generates, what does that mean for the liquidator’s course of action? And which factors obstruct liquidators in addressing these irregularities?…
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Our Talents and Discoveries 2016
Christmas is coming, which means that 'Our Talents and Discoveries 2016' has been distributed. This also means that it is time to vote for the 'Discoverer of the year 2016'. Each of the eight institutes nominated one researcher that excelled in the past year. Who is your favourite?
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Many planetary systems prematurely evaporate into thin air
When stars are born, large clouds of gas and dust form that are known as circumstellar discs. Research by PhD candidate Francisca Concha-Ramírez shows that strong radiation from neighbouring stars soon evaporates the dust in these discs, which can prevent planet formation at an early stage. PhD defence…
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Hanne Cuyckens and Daan Weggemans appointed Teaching Fellow
Hanne Cuyckens and Daan Weggemans have been appointed Teaching Fellow and Member of the Leiden Teachers' Academy (LTA) from 1 September 2023.
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Three Leiden Science projects receive computing time on national supercomputers
A night sky of more than 40 petabytes in size, simulating young star clusters and understanding how the body inhibits viruses: three Leiden projects have received computing time on one of the national computer systems.