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Results 81 - 100 of 1865.


Environment - Innovation - 20.03.2020
Practical technologies for the global South
Practical technologies for the global South
The Tech4Dev program connects EPFL researchers with NGOs in order to develop technologies able to address specific needs in the global South and withstand local conditions. Four projects have been awarded grants following the first call for proposals. The global North and South have differing climates, economies and infrastructure.

Life Sciences - 19.03.2020
Our complex evolutionary history
Our complex evolutionary history
A new study has provided the most comprehensive analysis of human genetic diversity to date, clarifying the genetic relationships between human populations around the world. It is remarkable that patterns of Neanderthal ancestry are so similar in populations around the world today, and may have derived from a single Neanderthal population.

Mathematics - 19.03.2020
Most beneficial places to plant new woodland revealed
Most beneficial places to plant new woodland revealed
A Research Fellow from the University of Sussex has worked with a team of mathematicians to help Natural England identify the most beneficial places to plant 10,000 hectares of new woodland. Eduard Campillo-Funollet collaborated with a team from the University of Bath to produce mathematical models and maps to help identify the hotspots for tree planting throughout England.

Astronomy / Space Science - Physics - 19.03.2020
New data tests 'theory of everything'
New data tests ’theory of everything’
One of the biggest ideas in physics is the possibility that all known forces, particles, and interactions can be connected in one framework. String theory is arguably the best-known proposal for a 'theory of everything' that would tie together our understanding of the physical universe. If these particles are eventually detected it would change physics forever Christopher Reynolds Despite having many different versions of string theory circulating throughout the physics community for decades, there have been very few experimental tests.

Physics - 19.03.2020
Dancing electrons solve a puzzle
Dancing electrons solve a puzzle
Physicists use extreme infrared laser pulses to reveal frozen electron waves in magnetite Magnetite is the oldest magnetic material known to humans, yet researchers are still mystified by certain aspects of its properties.For example, when the temperature is lowered below 125 kelvins, magnetite changes from a metal to an insulator, its atoms shift to a new lattice structure, and its charges form a complicated ordered pattern.

Health - Life Sciences - 19.03.2020
Finds immune cells can defend against multiple viruses
An underlying virus does not stop the body's immune system from launching a strong defense against a second, newly introduced virus, according to a Yale-led study that appears in the March 9 online edition of  the journal PLOS Neglected Tropical Diseases. For the study, Yale researchers obtained blood samples from patients from India with dengue infection, working in partnership with investigators from The National Institute of Mental Health and NeuroSciences in India and their colleagues at Apollo Hospital in Bangalore.

Life Sciences - Chemistry - 19.03.2020
Cells carry out gene-guided construction projects
Cells carry out gene-guided construction projects
Stanford researchers have developed a method to genetically reprogram cells to build artificial structures. Stanford researchers have developed a technique that reprograms cells to use synthetic materials, provided by the scientists, to build artificial structures able to carry out functions inside the body.

Life Sciences - 19.03.2020
Brain Gains Knowledge Through Observation
Humans have a number of ways to learn how to do new things. One of those ways is through observation: watching another person perform a task, and then doing what they did. Think of a child that learns how to "adult" by observing their parents as they pay for groceries or make a phone call. It has long been theorized that there are two types of observational learning: imitation and emulation.

Life Sciences - Physics - 19.03.2020
High-speed microscope captures fleeting brain signals
Electrical and chemical signals flash through our brains constantly as we move through the world, but it would take a high-speed camera and a window into the brain to capture their fleeting paths. University of California, Berkeley, investigators have now built such a camera: a microscope that can image the brain of an alert mouse 1,000 times a second, recording for the first time the passage of millisecond electrical pulses through neurons.

Life Sciences - Health - 19.03.2020
’Sushi parasites’ have increased 283-fold in past 40 years
Anisakis worms in blue whiting fish. The prevalence of these worms, found in raw or undercooked fish, has increased dramatically since the 1970s. Gonzalo Jara/Shutterstock The next time you eat sashimi, nigiri or other forms of raw fish, consider doing a quick check for worms. A new study led by the University of Washington finds dramatic increases in the abundance of a worm that can be transmitted to humans who eat raw or undercooked seafood.

Business / Economics - 19.03.2020
New insights into US flood vulnerability revealed from flood insurance big data
Instead, building damage at a given flood depth is highly variable and can be characterized by a beta distribution. When calculating flood risk - that is, translating modelled representations of the physical of phenomenon of flooding to its impacts - it is common to apply a 'depth-damage function' or curve, which relates a given water depth to a proportional building loss (for example one metre of water equals 50 per cent loss of building value).

Physics - Chemistry - 19.03.2020
Nature-Inspired Green Energy Technology Clears Major Development Hurdle
Nature-Inspired Green Energy Technology Clears Major Development Hurdle
Scientist Heinz Frei has spent decades working toward building an artificial version of one of nature's most elegant and effective machines: the leaf. Frei, and many other researchers around the world, seek to use photosynthesis - the sunlight-driven chemical reaction that green plants and algae use to convert carbon dioxide (CO2) into cellular fuel - to generate the kinds of fuel that can power our homes and vehicles.

Microtechnics - Computer Science / Telecom - 19.03.2020
This Drone Can Play Dodgeball - And Win
This Drone Can Play Dodgeball - And Win
Using a novel type of cameras, researchers from the University of Zurich have demonstrated a flying robot that can detect and avoid fast-moving objects. A step towards drones that can fly faster in harsh environments, accomplishing more in less time. Drones can do many things, but avoiding obstacles is not their strongest suit yet - especially when they move quickly.

Environment - Health - 19.03.2020
First map shows global hotspots of glyphosate contamination
First map shows global hotspots of glyphosate contamination
Glyphosate, or Roundup, is under scrutiny because of possible impacts on human health and ecosystems. Here Federico Maggi and Alex McBratney present the world's first map detailing contamination hotspots of the controversial herbicide. Agricultural scientists and engineers have produced the world's first map detailing global 'hot spots' of soil contaminated with glyphosate, a herbicide widely known as Roundup.

Life Sciences - Physics - 18.03.2020
Researchers develop new theory to explain random movement of particles in fluids
Researchers develop new theory to explain random movement of particles in fluids
Mathematicians have developed a new theory to explain the strange, loopy motions seen in 'passive' particles immersed in 'active' fluids. The theory could help researchers understand how microorganisms forage for nutrients, and how randomness arises in real-life, out-of-equilibrium systems like financial markets.

Life Sciences - 18.03.2020
New technique ’prints’ cells to create diverse biological environments
University of California, Berkeley, researchers have created a new technique that utilizes photolithography and programmable DNA to rapidly "print" two-dimensional arrays of cells and proteins that mimic a wide variety of cellular environments in the body. (UC Berkeley graphic by Olivia Scheideler) Like humans, cells are easily influenced by peer pressure.

Environment - 18.03.2020
Climate change means more extreme weather than predicted
Analysis shows global warming is intensifying the occurrence of unprecedented hot spells and downpours faster than predicted by historical trends. New approaches for incorporating global warming into extreme weather analysis could improve global risk management. A new Stanford study reveals that a common scientific approach of predicting the likelihood of future extreme weather events by analyzing how frequently they occurred in the past can lead to significant underestimates - with potentially significant consequences for people's lives.

Astronomy / Space Science - Physics - 18.03.2020
Path to Razor-Sharp Black Hole Images
Last April, the Event Horizon Telescope (EHT) sparked international excitement when it unveiled the first image of a black hole. Today, a team of researchers have published new calculations that predict a striking and intricate substructure within black hole images from extreme gravitational light bending.

Social Sciences - 18.03.2020
How people investigate - or don't - fake news on Twitter and Facebook
How people investigate - or don’t - fake news on Twitter and Facebook
Social media platforms, such as Facebook and Twitter, provide people with a lot of information, but it's getting harder and harder to tell what's real and what's not. Researchers at the University of Washington wanted to know how people investigated potentially suspicious posts on their own feeds. The team watched 25 participants scroll through their Facebook or Twitter feeds while, unbeknownst to them, a Google Chrome extension randomly added debunked content on top of some of the real posts.

Physics - Chemistry - 18.03.2020
Molecular movies reveal the subtle, complex ways a simple molecule can shimmy and fly apart
SLAC Overview Our Mission, Vision & Values SLAC By The Numbers Director's Office Past SLAC Directors and Deputy Directors Wolfgang (Pief) K. H.

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