783 search results for “vreeke signaling” in the Public website
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‘Heart rate and skin conductance predict romantic attraction’
Synchronised heart rates and skin conductance tell us that people are attracted to each other. This explains why we feel a romantic ‘click’ with some people and not with others. This is the result of research by psychologist Eliska Prochazkova from the Leiden Institute for Brain and Recognition, which…
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Leiden physicists detect single nanoparticles in motion
It's pretty hard to spot a single 5 nanometer particle. Leiden physicists pulled it off by turning a 120 nm gold rod into a detector.
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How cells talk by pulling on a fibre network
Mechanics play a larger role in blood vessel formation, and other developmental biology, than previously thought. Cells appear to respond to mechanical signals, such as pressure. Through the extracellular matrix, a network of fibrous proteins, cells can supposedly exchange those mechanical signals over…
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eScience Grant for LION Neutrino Research
The Netherlands eScience Center has announced to fund a new Path-Finding Project led by Dr. Dorothea Samtleben from the Leiden Institute of Physics (LION). This project aims to make the processing of detection signals more efficient for the KM3NeT neutrino telescope, which is currently under construction…
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Surface Plasmons Measured for Faster Internet
Leiden physicists use a new method to measure so-called surface plasmons. Researching these particles could lead to new light-based technology, including faster internet.
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Gold nano-antennas reveal single molecules’ electrochemical properties
Individual molecules are extremely hard to see through feeble fluorescence. Tiny gold nanorods serve as new antennas to intensify their signal 500 times. Publication on 24 February in Angewandte Chemie.
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Feodor-Lynen research fellowship for Bela Bode
Dr Bela Bode receives a Feodor Lynen research fellowship for postdoctoral researchers by the Alexander von Humboldt-Foundation for development of new methods for signal enhancement in solid state NMR. He aims to create a specific analytical tool for surface studies and research on membranes and membrane…
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Sylvia van Beugen wins award for publication on psychodermatology
Sylvia van Beugen has won the Herman Musaph Literature award 2016 for the best publication about psychodermatology. Her publication describes the importance of body awareness in chronic skin conditions, such as psoriasis.
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Simulating the prehistoric use of fire through computer models
Archaeologists often use the percentages of heat-affected stone or bone artifacts found at archaeological sites as a way to determine how frequently fire was used by the inhabitants. Andrew Sorensen and Fulco Scherjon have come up with a computer model called 'fiReproxies' to simulate how fires used…
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Orrit receives NWO-TTW Open Technology Programme grant
Michel Orrit has received an NWO-TTW Open Technology Programme grant. He will use it to image single molecules without the need for fluorescence.
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Data Science
The ability to collect and interpret huge quantities of data has become indispensable to society and academia. Leiden University is a knowledge and expertise centre for data science that places the emphasis on interdisciplinary collaboration and innovation.
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Collaborative and effective drug development
There are many complex links in the chain that provides patients with new drugs: from fundamental science, to clinical tests, to production. The entire chain can be found in Leiden. Leiden University, the Leiden University Medical Center (LUMC) and the businesses at the Leiden Bio Science Park (LBSP)…
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Language socialization in deaf families in Africa
Across cultures, parents help their children master the social and linguistic codes needed in adult life. Recent research on language socialization found important cross-cultural differences, pointing out the need for more diversity for a full understanding of this process. Deaf communities form…
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Staff
The Cyber Security lecturers are scholars and lecturers of Leiden University, Delft University of Technology and The Hague University of Applied Sciences.
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Larger pupils? You might just have gained someone’s trust
Synchrony in heart rate, skin conductance and pupil diameter plays a big role in human social interactions, such as gaining trust or being attracted toward each other. This is what Eliska Prochazkova found in several lab and field experiments. PhD defence on 4 March 2021.
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Exhibition 'The Drake Equation' - online
In Green Bank, Virginia are some giant radio telescopes which astronomers use to study objects deep in space. Because these telescopes are built to capture very faint redio signals, the area around the observatory is officially a 'radio-quiet' zone, without WiFi, radio or Cell signal. Photographers…
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Leiden University to limit fossil fuel ties
Leiden University no longer wishes to collaborate with fossil fuel partners that are not demonstrably committed to achieving the Paris Agreement targets. Exceptions will be made only if a collaboration demonstrably contributes to the energy transition. This proposal by the Executive Board was discussed…
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Eduard Fosch-Villaronga receives visiting grant for cybersecurity aspects of healthcare robot technology
Dr. Eduard Fosch-Villaronga, Marie Skłodowska-Curie Postdoctoral Researcher at eLaw, received a personal visiting researcher grant from the Research Council of Norway to spend five weeks visiting the University of Oslo.
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New insight into tuberculosis infection
Michiel van der Vaart with a team from Leiden University and the LUMC, led by IBL-researcher Annemarie Meijer, discovered that DRAM1 is a protein that regulates anti-bacterial autophagy, a defense mechanism against infections such as tuberculosis.
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Vidi Grant for Stefan Semrau: how does bioelectricity shape embryonic development?
Leiden biophysicist Stefan Semrau was granted an NWO Vidi earlier this month. He will use the grant to study the role of electricity in embryonic development and tissue regeneration.
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Seminars
LCN2 organizes seminars on the last Friday of each month.
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Visualising the nanoworld
Visualising cell proteins without invasive techniques is possible with the help of fluorescence. During a lecture of the Natuurwetenschappelijk Gezelschap Leiden on 18 January, winner of the Spinoza Prize 2017 and founder of the field of single molecule optics Michel Orrit explained how this works.
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Evolution of bacterial movement revealed
An international team with researchers from Leiden revealed how a bacterium repurposed an internal system to control its movements. Movement control is very important in host invasion, which can lead to disease. Publication on 27 April in Nature Communications.
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Vici grants for 7 Leiden researchers
Seven Leiden researchers have been awarded a prestigious Vici grant by the Netherlands Organisation for Scientific Research (NWO).
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Colliding magnetic fields reveal unknown planets
Northern lights, stellar winds and exoplanets. This is what astronomer's PhD research revolved around. PhD candidate astronomer Rob Kavanagh developed mathematical models to better understand the interactions between exoplanets and stellar winds and to define features of exoplanets. He will receive…
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Nose of E. coli zips open and shut
PhD student Wen Yang discovered how certain cell receptors in E. coli bacteria signal 'smells'. With the use of ice-cold electron microscopy microbiologists from Leiden gain more insight into how bacteria respond to their environment. Publication in mBio.
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Stimulating the gut–brain nerve can influence emotion
Stimulating the vagus nerve, which provides a direct link between the gut and brain, makes people pay less attention to sad facial expressions. This research study by psychologists Katerina Johnson and Laura Steenbergen is published in the journal Neuroscience.
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Leiden insolvency thesis wins annual BUREN thesis prize
On 23 November 2022, the BUREN Thesis Prize on Insolvency Law was awarded for the fifth time. This year, two Leiden theses were nominated for this prize, written by Carlijn van der Hek and Raghav Mittal. Both nominees presented the results of their research, after which the jury announced that the first…
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Single Molecule Detected for Use in Quantum Network
Leiden physicists have managed to detect a single molecule called dibenzoterrylene in a new crystal, and found that it is a candidate component for a quantum network. Future quantum computers will need such a network to work together while maintaining their advantages. Publication in ChemPhysChem jo…
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Substantial investment in Leiden centre for NMR spectroscopy
Paramagnetism. An obscure occult practice? No. It’s one of the newest scientific methods for mapping the behaviour of proteins with great precision. Marcellus Ubbink has been awarded 3 million euro by NWO and Leiden University to purchase a very powerful instrument. The goal: to acquire greater insight…
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Disrupted movement makes macrophages more lethal to tuberculosis bacteria
Macrophages – the front line of our immune system – protect us from infections. But in the case of the tuberculosis bacteria, this often goes wrong. The group of Annemarie Meijer from the Leiden Institute of Biology has now discovered that macrophages in zebrafish are better able to eliminate tuberculosis…
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Auroras on nineteen stars hint at hidden exoplanets
An international team of scientists including Leiden's Joe Callingham has discovered nineteen red dwarf stars that unexpectedly emit radio waves. The outbursts possibly originate from interaction with exoplanets. The results of the research appear in two scientific publications.
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New insight into immune cell behaviour offers opportunities for cancer treatment
An international group of scientists has discovered that certain cells of our immune system – the so-called T cells – communicate with each other and work together as a team. To fight an infection they stimulate each other’s growth, but at the same time, they inhibit each other when there is a surplus…
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Interview with PhD student: Doris van Bergeijk
Leiden University is partner of the Netherlands Centre for One Health (NCOH). This initiative brings together leading academic research institutes in the Netherlands in an open innovation network that responds to the theme: One Health. NCOH interviewed Doris van Bergeijk: PhD student of the project…
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Impacting policy through the Faculty Council Archaeology: ‘we are working on the wellbeing of students’
The Faculty Council is the most important co-participatory body of the Faculty of Archaeology. Its members represent staff and students in meetings with the Faculty Board, and they can have a profound impact on the Faculty's policies. We speak with the council's chair, Merlijn Veltman, about the goals…
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Rowie Stolk on NPO Radio 1 about passport alerts
In the Netherlands, anyone who loses their passport or ID card too often can be added to the Passport Alerts Register. As a result, a passport application may be denied or the passport must be surrendered. Rowie Stolk, PhD candidate at the Department of Constitutional and Administrative Law, spoke on…
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Can humans observe a single particle of light? (And what does that say about our brain?)
Hoping to learn something about the human brain, Leiden researchers are creating a setup to shoot single photons, particles of light, into someone’s eye. ‘The eye is a passageway to the brain.’
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Blog post: The nose of this wormy-shaped bacterium has a surprising symmetry
For the first time ever, Leiden biologists have found that the ‘nose’ of spirochetes – worm-shaped bacteria – have a two-fold symmetry. A remarkable discovery, as the ‘nose’ of every other bacterium has been found to have a six-fold symmetry. First author Alise Muok wrote a popular blog about the findings…
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Combined technique measures nanostructures ten times better than before
Researchers at Leiden University and TU Delft have combined two techniques that are used to measure the structure of biomolecules, creating a method that is ten times more sensitive.
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Multimessenger astronomy to study the structure of Milky Way
For centuries, astronomers have studied the universe by collecting light signals. Since 2015, the confirmation of an important prediction of Einstein allows us to explore the universe in a new way: through gravitational wave radiation. Astronomy PhD candidate Valeriya Korol proposes to use these gravitational…
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New technique to study vascular growth
Sonja Boas developed new techniques to study vascular growth computationally. The results of her research provide a better understanding into mechanisms behind vascular growth, which is relevant to the development of medical therapies. She defends her thesis 'Computational modeling of angiogenesis'…
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Breakthrough in uncrackable quantum encryption
An important discovery makes it possible to communicate complex information among multiple people without the message being cracked. The communication can also relate to complex information.
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Cancer cell mechanism found to be used against itself
Leiden biophysicists have found a new possible way to attack cancer cells. They have located ‘sinkholes’ on the cells where receptor proteins disappear from the surface. If a drug could push these proteins towards those areas, it would kill the cancer cell.
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How do plants protect themselves against too much sunlight?
That a switching protein plays a role in protecting a plant from too much sunlight was already known, but how exactly was not yet understood. The research group of Anjali Pandit has now discovered that this protein changes shape when there is too much sunlight. The results have been published in Nature…
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New fundamental insight into the battle against bacteria
The intestinal bacterium E. coli can adapt to changes in its surroundings. Leiden scientists have discovered how the H-NS protein makes this possible. This new knowledge can be an important starting point in combatting bacteria and diseases such as peritonitis. Publication 2 October in the journal e…
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Research
Through metabolism, biochemical processes give rise to the complexity of life. Acquired and inborn errors in metabolism underlie many diseases occurring in man. The challenge for present day medical biochemistry is to find, and integrate, pieces of information at molecular, cell and organismal level…
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Allosteric Modulation
Allosteric modulation has long been recognized as a general and widespread mechanism for the control of protein function. Modulators bind to regulatory sites distinct from the active site on the protein, resulting in conformational changes that may profoundly influence protein function. This concept…
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WARN-D: developing an early warning system for depression in students
My ERC Starting Grant, funded with €1.5 million for 5 years as part of the Horizon 2020 research and innovation program, is focused on building the early warning system WARN-D to reliably forecast depression in young adults before it occurs. Why depression, and why prediction?
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Charlemagne's Workshops
An Investigation into the role of copper-alloy craft production in the early medieval economy of northwest Europe.
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What’s in a plant?
Tracking early human behaviour through plant processing and -exploitation.