Monday, October 17, 2016

Science X Newsletter Week 41

Dear Reader ,

Here is your customized Science X Newsletter for week 41:

Observable Universe contains ten times more galaxies than previously thought

Astronomers using data from the NASA/ESA Hubble Space Telescopes and other telescopes have performed an accurate census of the number of galaxies in the Universe. The group came to the surprising conclusion that there are at least 10 times as many galaxies in the observable Universe as previously thought. The results have clear implications for our understanding of galaxy formation, and also help solve an ancient astronomical paradox—why is the sky dark at night?

Diamonds aren't forever: Team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link "People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer but a connected cluster of small ones."

New method for making effective calculations in 'high-dimensional space'

Researchers have developed a new method for making effective calculations in "high-dimensional space" – and proved its worth by using it to solve a 93-dimensional problem.

Physicists dispel Rayleigh's curse

The resolution of an optical system (like a telescope or a camera) is limited by the so-called Rayleigh criterion. An international team, led by Complutense University of Madrid, has broken this limit, showing that it is not a fundamental curse. This opens the door to considerable improvement in resolution and could force the revision of optics textbooks. This research is the culmination of a thrilling race between four groups of scientists around the world.

Scientists reveal how a little-known amoeba engulfed a bacterium to become photosynthetic

About 100 million years ago, a lowly amoeba pulled off a stunning heist, grabbing genes from an unsuspecting bacterium to replace those it had lost.

Forever quantum: physicists demonstrate everlasting quantum coherence

(Phys.org)—Physicists have implemented the first experimental demonstration of everlasting quantum coherence—the phenomenon that occurs when a quantum system exists in a superposition of two or more states at once. Typically, quantum coherence lasts for only a fraction of a second before decoherence destroys the effect due to interactions between the quantum system and its surrounding environment.

Physicists pass spin information through a superconductor

Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have made a discovery that could lay the foundation for quantum superconducting devices. Their breakthrough solves one the main challenges to quantum computing: how to transmit spin information through superconducting materials.

Physicists explore exotic states of matter inspired by Nobel-winning research

The 2016 Nobel Prize in physics has been awarded to David Thouless, Duncan Haldane and Michael Kosterlitz, three theoretical physicists whose research used the unexpected mathematical lens of topology to investigate phases of matter and the transitions between them.

Lego-like wall produces acoustic holograms

Research Triangle engineers have developed a simple, energy-efficient way to create three-dimensional acoustic holograms. The technique could revolutionize applications ranging from home stereo systems to medical ultrasound devices.

Building blocks of life's building blocks come from starlight

Life exists in a myriad of wondrous forms, but if you break any organism down to its most basic parts, it's all the same stuff: carbon atoms connected to hydrogen, oxygen, nitrogen and other elements. But how these fundamental substances are created in space has been a longstanding mystery.

Simulations show how to turn graphene's defects into assets

Researchers at Penn State, the Department of Energy's Oak Ridge National Laboratory and Lockheed Martin Space Systems Company have developed methods to control defects in two-dimensional materials, such as graphene, that may lead to improved membranes for water desalination, energy storage, sensing or advanced protective coatings.

Extraterrestrial impact preceded ancient global warming event

In a new study, scientists say they have found evidence along the New Jersey coast that an extraterrestrial object hit the earth at the same time a mysterious release of carbon dioxide suddenly warmed the planet, some 55.6 million years ago. The warm period, known as the Paleocene-Eocene Thermal Maximum (PETM), is often cited as the closest analog to today's rapid human-induced climate change. The study does not explicitly say that an impact triggered the PETM, but the implication is consistent with the authors' previous work suggesting such an abrupt trigger. By contrast, mainstream theory says that the carbon came from volcanism or some other earthly cause, over thousands of years.

Metamaterial uses light to control its motion

Researchers have designed a device that uses light to manipulate its mechanical properties. The device, which was fabricated using a plasmomechanical metamaterial, operates through a unique mechanism that couples its optical and mechanical resonances, enabling it to oscillate indefinitely using energy absorbed from light.

Show your fingers to a neuroscientist

By comparing your index and ring fingers, a neuroscientist can tell if you are likely to be anxious, or if you are likely to be a good athlete.

New kind of supercapacitor made without carbon

Energy storage devices called supercapacitors have become a hot area of research, in part because they can be charged rapidly and deliver intense bursts of power. However, all supercapacitors currently use components made of carbon, which require high temperatures and harsh chemicals to produce.

X-rays uncover surprising techniques in the creation of art on ancient Greek pottery

Under beams of X-rays, the colors of art become the colors of chemistry. The mysterious blacks, reds and whites of ancient Greek pottery can be read in elements—iron, potassium, calcium and zinc—and art history may be rewritten.

New technique offers glimpse at human evolution in action

In research published in Science, a Stanford-led international team used a new analytic technique to map recent evolution. The technique relies exclusively on the DNA sequences of modern humans, yet it can reveal rapid changes in the prevalence of different gene variants over the last 2,000 to 3,000 years.

Common pair of drugs linked to increased risk for fatal heart condition with data science

Researchers at Columbia University Medical Center and the Data Science Institute at Columbia University have uncovered a potentially dangerous drug interaction using data science. Their findings were published in the latest issue of the Journal of the American College of Cardiology.

Climate change has doubled western US forest fires

A new study says that human-induced climate change has doubled the area affected by forest fires in the U.S. West over the last 30 years. According to the study, since 1984 heightened temperatures and resulting aridity have caused fires to spread across an additional 16,000 square miles than they otherwise would have—an area larger than the states of Massachusetts and Connecticut combined. The authors warn that further warming will increase fire exponentially in coming decades. The study appears today in the journal Proceedings of the National Academy of Sciences.

Google DeepMind project taking neural networks to a new level

(Tech Xplore)—A team of researchers at Google's DeepMind Technologies has been working on a means to increase the capabilities of computers by combining aspects of data processing and artificial intelligence and have come up with what they are calling a differentiable neural computer (DNC.) In their paper published in the journal Nature, they describe the work they are doing and where they believe it is headed. To make the work more accessible to the public team members, Alexander Graves and Greg Wayne have posted an explanatory page on the DeepMind website.


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