279 search results for “Evans Ray” in the Public website
-
Bugs and birds and landscape complexity
What invertebrates are available to feed nestlings in an agricultural landscape of varied complexity?
-
Far from home: the science exploitation of the fastest Milky Way stars
The Sun and all the stars in the night sky reside in the Milky Way galaxy. In the at-rest reference frame of the Galaxy, typical stars travel with velocities of about 100-200 kilometres per second.
-
Bloomington Grove Kickapoo Creek Restoration to Enhance Biodiversity
Does a high quality prairie restoration in an urban/agricultural landscape provide invertebrates necessary for a sustainable ecosystem?
-
Invertebrates on the edge
What invertebrates live in the fields and edges? Do the populations change with landscape complexity?
-
Rosemary's Baby
Rosemary's Baby is one of the greatest movies of the late 1960s and one of the best of all horror movies, an outstanding modern Gothic tale. An art-house fable and an elegant popular entertainment, it finds its home on the cusp between a cinema of sentiment and one of sensation.
-
Invertebrate response to management of roadside edges
Does roadside management in the mid-west USA increase invertebrate diversity similar to practices in Europe?
-
Operando research in electrochemistry
The central theme of Rik Mom’s research group is to identify what the electrode-electrolyte interface looks like when electrocatalysis is taking place. Using specialized forms of Raman and X-ray spectroscopy, we study the chemical state and bonding environment of the electrode surface and near-surface…
-
A physicochemical study of Medieval and Post-Medieval ceramics from the Aegean
Archaeometric analysis of glazed pottery assemblages from the Early Byzantine to the Early Modern periods in the Aegean.
-
The Texture of the Lexicon
In this volume, Ray Jackendoff and Jenny Audring embark on a major reconceptualization of linguistic theory as seen through the lens of morphology. Their approach, Relational Morphology, extends the Parallel Architecture developed by Jackendoff in Foundations of Language (2002), Simpler Syntax (2005),…
-
The impact of climate variability on the ecology of a lion (Panthera leo Linnaeus 1758) population and lion livestock conflicts in the Amboseli
Promotor: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon
-
Alexey Boiarskyi Group - Particle and Astroparticle Physics
My work is motivated by the necessity to extend Standard Model of Particle Physics in order to explain three observed phenomena that this great theory fails to accommodate
-
A Model Membrane Approach to Elucidate the Molecular Organization in the Skin Barrier
Promotor: J. A. Bouwstra
-
Cosmic particle acceleration by shocks and turbulence in merging galaxy clusters
In this thesis, I study the formation of large-scale structure and the physics of particle acceleration at large scales (~Mpc).
-
Deep learning for tomographic reconstruction with limited data
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.
-
Filter-based reconstruction methods for tomography
Promotor: K.J. Batenburg
-
Overcoming ruptures: Zande identity, governance, and tradition during cycles of war and displacement in South Sudan and Uganda (2014-2019)
On 1 June 2022, Bruno Braak defended his thesis entitled 'Overcoming ruptures: Zande identity, governance, and tradition during cycles of war and displacement in South Sudan and Uganda (2014-2019).' The doctoral research was supervised by Prof.dr. J.M. Otto, Dr.ir. C.I.M. Jacobs, and Dr. C. Leonardi…
- Oort Lecture
-
Time for mapping. Cartographic temporalities
Understanding the temporal modes of digital mapping.
-
CWTS
The Centre for Science and Technology Studies (CWTS) is an interdisciplinary research institute at Leiden University that studies scientific research and its connections to technology, innovation, and society.
- Russian Post-Soviet Diplomacy
-
The densest matter in nature
What is neutron star matter?
-
Research
Developing computational algorithms for structural biology -A high resolution, three dimensional view of a molecule provides detailed information that help elucidate its function: by knowing the exact arrangement of atoms in a molecule, we can understand disease, develop drugs to combat them and improve…
-
The reconstruction of the codex Añute palimpsest using hyperspectral imaging data
A technique originally developed for satellite imaging can now be used to recover pictographic texts from underneath the surface of a five hundred year old Mexican manuscript.
-
Discoveries in 2023
From nanoparticles to colliding ice planets and from biological origami to new x-ray scanner techniques: this year again, our scientists have made wonderful discoveries. From the largest numbers to the smallest molecules and from the oldest galaxies up to the latest algorithms, take a look at each institute's…
-
Utopia: Universal Three-dimensiOnal Passport for process Individualization in Agriculture
Agricultural foods naturally vary in their detailed internal structure. To facilitate early detection of health hazards due to contamination or disease, predict maturity and minimize wastage, it is critical to take into account the internal characteristics of each individual product, as these enable…
-
Exploring the interactions of M dwarf winds and cosmic rays
PhD defence
-
First discovery of high-energy neutrino source
For the first time, scientists have traced back a high-energy neutrino to its source in space. It was produced by a so-called blazar—a supermassive black hole. Researchers from neutrino detector IceCube report this in Science. ‘This is a milestone for neutrino science,’ says physicist Dorothea Samtleben…
-
Crystal Cave
X-Ray Diffraction (XRD), Nuclear Magnetic Resonance (NMR) and Cryo-electron microscopy (Cryo-EM) are the three main methods for solving structures of macromolecules.
-
A new step in the search for the origin of dark matter
A signal that is present both in the centre of our Milky Way and in distant places in the universe could reveal the origin of dark matter. This is what Leiden physicist Alexey Boyarsky concludes in an article in Physical Review Letters.
-
Cum laude on understanding catalysts under extreme conditions
Physical chemist Rik Mom developed a revolutionary way to investigate catalysts in action in detail. For this work he received the distinction cum laude during his PhD defence on 29 June.
-
in-situ observation for electrochemical energy experiment by Operando X-ray spectroscopy
Lecture
-
in action: Characterization of electrocatalysts with synchrotron X-ray techniques
Lecture
-
Visiting Professorship
In the spring semester of each academic year, Visiting Professors from Austria visit Leiden University to teach about their specialisms (alternating between history, music, art, literature, often dealing with 19th and 20th century themes). They teach a lecture course and a seminar, usually at the bachelor…
-
Enumerative arithmetic
This thesis consists of three chapters. Each chapter is on a different subject. However, all three chapters address issues that arise in counting arithmetically interesting objects.
-
A well-established harmony in chaos: from isolated galaxies to galaxy clusters
The origin and evolution of galaxies are closely linked to many different physical phenomena.
-
Seeking Futures, Shaping Pasts: The fragmented nature of the political in Kashmir
Idrees Kanth defended his thesis on 7 May 2019
-
Modeling interstellar bubbles: near and far
Promotor: Prof. dr. A.G.G.M. Tielens
-
Steffen Brünle
Science
-
Discovering new physics in extremely bright neutron stars
Astronomer Alexander Mushtukov, currently working at the University of Amsterdam, received a Veni grant of 250,000 euro’s which he will execute in Leiden. Supervised by Simon Portegies Zwart, Mushtukov will use advanced simulations to understand the unknown physics in extremely bright neutron stars.
-
Tradition and Innovation: Conrad Gessner and Sixteenth-Century Ichthyology (1551-1602)
This PhD subproject concentrates on 16th-century ichthyology and takes Gessner’s Historia piscium (1558) (further HP) as its point of departure and focus.
-
Van Marum Colloquia
The "Van Marum Colloquia" are a collaborative lecture series between the LION and LIC institutes, focusing on fundamental and applied surface science.
-
More effective blocking of CCR2 receptor
The discovery of new medicines is a tedious and lengthy process. On average, over 10,000 molecules need to be studied for one to become a drug and reach the patient. Part of that process are the very costly clinical trials in humans, and candidate drugs often fail due to side effects or lack of efficacy.…
-
Research Projects, Categories and Supervisors
These are the proposed research projects for LEAPS 2019. Please note that not all projects will go ahead and some may still be added in the near future. Final funding decisions lie with the Faculty sponsors. And please make a note that if you are interested in an ESA project, to check if your state…
-
Buddhist and Hindu Metal Images of Indonesia: Evidence for shared artistic and religious networks across Asia (c.6th-10th century)
Mathilde Mechling defended her thesis on 28 january 2020.
-
Cathodic corrosion
Cathodic corrosion is a relatively unknown phenomenon that can severely etch metallic electrodes at cathodic (negative) potentials.
-
Impaired barrier of inflammatory skin diseases
Focus in skin research
-
On Terminal Alkynes That Can React with Active-Site Cysteine Nucleophiles in Proteases
Active-site directed probes are powerful in studies of enzymatic function. We report an active-site directed probe based on a warhead so far considered unreactive.
-
The structure of the dusty cores of active galactic nuclei
Promotor: W. Jaffe, Co-promotor: K. Meisenheimer
-
Clues from stellar catastrophes
Promotores: S.F. Portegies Zwart, E. M. Rossi
-
Atomic Insights into Hydrodesulfurization
Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.