278 search results for “Wilcox Ella Wheeler 1850 1919 Drops of water” in the Public website
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Accessible remote sensing of water
Water is all around us and is vital for all aspects of life. Studying the various compounds and life forms that inhabit natural waters lets us better understand the world around us.
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The Confluence of Water and Power
On 27 January 2022 Tjahjono Prasodjo successfully defended a doctoral thesis and graduated.
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The World of Water
The International Course on Water Use and Management in Cagayan Valley The Philippines (2011-2015)
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Laboratory studies of Water Ice in Space
Astronomical observations of cold regions in the universe show a rich inventory of ices. Part of these ices may end up on planets like our own, but in that journey they will be exposed to considerable amounts of radiation.
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The role of water in hydrogen electrocatalysis
Promotor: M.T.M. Koper, Co-promotor: L. Juurlink
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Explorations of Water Oxidation Catalysis in Explicit Solvent
In the search for sustainable energy solutions, the idea of artificial photosynthesis has been proposed as an approach with which to use water and sunlight to produce hydrogen.
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History of Water Management in Yemen: An Interdisciplinary Study
Lecture, Leiden Yemeni Studies Lecture Series
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Solvent effects in the electrocatalytic reactions of water
Koper
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The impacts and challenges of water use of electric power production in China
This thesis examines the impacts and challenges of water use of electric power system. This thesis found that there are large differences in water use of electricity technologies, with hydropower and thermal power being two large water users.
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Roy de Kleijn: ‘Fetching a glass of water is extremely difficult for a robot’
Training a robot in a real-life environment is more or less impossible. Computer scientist and psychologist Roy de Kleijn switched to training in a simulated, virtual one instead. ‘You do have a reality gap, but the more precisely you train the robot, the better it is in practice.’ His inspiration:…
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Water and Society Lab
How do societies move forward with sustainable, effective and efficient management of Earth's water resources?
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Measuring water life
Human activity, such as pollution, may disturb the balance of living water systems, which has consequences for biodiversity, but also for other functions such as water purification. Leiden University maps living water systems using the most advanced technologies.
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Water related adsorbates on stepped platinum surfaces
Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink
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Water Management in Ancient Mexico: Archaeological Heritage and Sustainable Development
This project investigates ancient water management of streams, springs and runoffs on the archaeological site of Monte Albán, Mexico, as a means to contribute with different stakeholders in the development of sustainable solutions to water problems today such as floods and scarcity.
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The quest for the legitimacy of architecture in Europe (1750-1850)
This programme aims to identify the intellectual contexts that were of importance for the architectural theory of the period, and especially to clarify the relation of architectural theory to primitivism.
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Bestrijdingsmiddelenatlas (BMA) - Pesticide Atlas of Dutch surface waters
Improving environmental risk assessment of pesticides in surface waters
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Water use of electricity technologies: A global meta-analysis
Understanding the water use of power production is an important step to both a sustainable energy transition and an improved understanding of water conservation measures. However, there are large differences across the literature that currently present barriers to decision making.
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Nuclear Quantum Effects in Solid Water
Ice, the solid state of water, plays an important role on our planet as well as the entire universe.Despite the fact that an individual water molecule has a very simple structure, its chemical bonding in the solid phase can be surprisingly complex.
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Mechanistic studies of the water oxidation reaction with molecular iron catalysts
In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.
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Surface-structure dependence of water-related adsorbates on platinum
Promotor: M.T.M. Koper, Co-promotor: J.B.F. Juurlink
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Adaptation strategies, water management and social changes: the case of Turkmenistan
The main question I want to answer is about the mutual influence between the cultural and settlements changes that occurred between the Bronze and the Early Iron Age in Margiana and the management of water resources.
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Catalysis of the electrochemical water oxidation to oxygen
Promotor: M.T.M. Koper, Co-Promotor: F. Calle-Vallejo
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Pesticides Atlas overhauled in line with European Framework Directive on Water
The Dutch atlas with pesticides concentrations in surface waters have been overhauled. This new, free accessible, website is in line with the European Framework Directive on Water (In Dutch: KRW).
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Astronomers find missing link for origin of water in solar systems
An international team of astronomers, including astronomers from Leiden University, has found the missing link in the path taken by water through star-forming clouds and young stars to comets and planets. They did so with the help of the ALMA observatory in Chile. The researchers published their findings…
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Long-awaited review reveals journey of water from interstellar clouds to habitable worlds
Professor Ewine van Dishoeck, together with an international team of colleagues, has written an overview of everything we know about water in interstellar clouds thanks to the Herschel space observatory. The article, published in the journal Astronomy & Astrophysics, summarizes existing knowledge and…
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European missionaries and humanitarianism in the Middle East (1850-1970)
From the mid-19th century until the 1970’s, the Middle East witnessed the presence of various European missionaries who played a fundamental role in the birth and the development of humanitarianism. Since these Christian missionaries were well integrated in the local Middle Eastern societies via their…
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Managing water is managing the future
“A partnership based on water” summarised Gerhard van den Top the relationship between the Netherlands and the Philippines in the 4th Louwes Lecture. He emphasised the significant role of international and intercultural cooperation in managing the complex challenges brought forward by climate change.…
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Quantification of ecosystem services within river catchments
How can ecosystem services within river catchments be quantified in spatial and temporal explicit way?
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Water and River Management in The Netherlands
The Water Resources and River Management course (300-level) took a day long field trip to exotic… South Holland! Here students were able to examine a variety of ways in which densely populated deltas confront issues related to water management and flooding, from a Dutch perspective.
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What was there first? Water or planets?
Could water be present in planet-forming disks before the formation of rocky planets? The James Webb Space Telescope may have found evidence for that. Webb has for the first time observed water in the inner disc around young star where at greater distance, giant planets have already formed. The research…
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Spin-off from astronomy: measuring water pollution with your mobile
Leiden astronomers and ecologists are developing an instrument that lets people measure the quality of surface water with a smartphone.This international citizen science project, MONOCLE, is a collaboration between scientists and local people in Tanzania, Brazil and four European countries.
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Thirsty power plants: the water footprint of generating electricity
To generate electricity, power plants use huge amounts of water. In Europe and the United States, generating electricity is accountable for 40% of the total water withdrawal. PhD candidate Industrial Ecology Yi Jin devoted his research to the water footprint of power plants and the impact on the environment.…
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Accessible remote sensing of water
PhD defence
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Liquid Footprints
Water, Urbanism, and Sustainability in Roman Ostia
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Imaging the water snow line within a protoplanetary disc
Research using the ALMA telescope by scientists including Leiden's John Tobin and Steven Bos has produced the first images of the water snow line within a protoplanetary disc. Publication in Nature on 14 July.
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Indonesian and Dutch experts discuss water management
A group of ten Indonesian scholars, NGO-members, and state officials coming from the Indonesian Ministry of Environment and Forestry visited their Dutch colleagues, academic and practical experts, to discuss issues related to water management and environmental regulation .
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‘Food is the elephant in the room for human water use’
From treatment plants to hot showers, emissions from water use in the U.S. are equal to 50 million cars driving around for a year. In The Washington Post, staff writer Tik Root consults different experts to learn about ways to reduce our water consumption. He also speaks with Leiden environmental scientist…
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Electrons found to flow like water
Science Magazine has published three back-to-back papers on an important discovery in solid state physics. Leiden physicist Jan Zaanen wrote a Perspective article on the subject in the same issue of 4 March.
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The Confluence of Water and Power
PhD defence
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Energy & Sustainability
Twenty years from now, the world population is estimated to be around 8.7 billion people, compared to the current 7.3 billion. In combination with the improvements in living standards and the corresponding growth in consumption, this will result in an enormous increase in the demand for food, consumables,…
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Converting water into hydrogen more efficiently
Scientists have long been puzzled why it is easier to produce hydrogen from water in an acidic environment than in an alkaline environment. Marc Koper comes with an explanation: the reason is the electric field at the surface of the catalyst, which is larger in an alkaline environment, as he writes…
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Molecular electronics: Controlled manipulation, noise and graphene architecture
Atoms and molecules are the basic units of matter. If we keep dividing a bar of gold or a glass of water into smaller parts, at the end we are left with a single gold atom or a water molecule.
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Linkages of Sustainability
Exploring linkages between energy and material use and implications for sustainable development.
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Ancient water management and field systems in southern Jordan
About 15 km to the south of the ancient city of Petra, archaeologists from the University of Leiden have discovered an impressive network of ancient water conservation measures and irrigated field systems.
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Discussing water management is ‘more important than ever’
Paul Hudson, a professor at Leiden University College, is organising a symposium on water management in the Netherlands and abroad that will take place on 22 March. We asked him what makes water management so important.
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Liquid footprints
The present study explores the role of water in the ancient Roman city of Ostia.In antiquity, Ostia was situated at the intersection of the Tiber River and the Mediterranean Sea, and acted as one of the harbour cities of Rome for several centuries.This study investigates how water was acquired, used,…
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Ingenious experiment finally reveals how gold oxidises water
Using a clever experiment, PhD candidate Shengxiang Yang discovered how gold electrodes convert water into oxygen. He is the first to unravel the mechanism of this reaction. Yang published his results in the journal ACS Catalysis.
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Gas-surface reaction dynamics and surface science
The local ordering of atoms at the surface of a metallic particle determines its catalytic activity and selectivity. As energy systems of the future will be based on efficient catalytic conversion of small molecules in closed cycles, we study how structural effects of catalysts can be used to our ad…
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Study confirms: burning coal in Bulgaria causes water stress
The coal-power energy sector is using enormous amounts of fresh water which is projected to negatively affect lives and the ecological balance of the surrounding region. This is the conclusion of the new report The Unquenchable Thirst of Energy Production, published by Greenpeace Bulgaria and Leiden…
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David Zetland in Biznews about watershortage in California
Yesterday, an article appeared in Biznews about the watershortages in California. David Zetland, university lecturer at Leiden University College, gives his opinion about this problem.