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Mar 29, 2018

Sugar-coated nanosheets developed to selectively target pathogens

Posted by in category: nanotechnology

In this way the new platform, developed by a team led by scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), could potentially be used to inactivate or detect pathogens.

The team, which also included researchers from New York University, created the synthesized nanosheets at Berkeley Lab’s Molecular Foundry, a nanoscale science center, out of self-assembling, bio-inspired polymers known as peptoids. The study was published earlier this month in the journal ACS Nano.

The sheets were designed to present simple sugars in a patterned way along their surfaces, and these sugars, in turn, were demonstrated to selectively bind with several proteins, including one associated with the Shiga toxin, which causes dysentery. Because the outside of our cells are flat and covered with sugars, these 2-D nanosheets can effectively mimic cell surfaces.

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Mar 29, 2018

Controlling rust makes beautiful ‘nanoflowers’ for storage

Posted by in categories: energy, nanotechnology

Researchers have developed a straightforward way to make a type of conducting polymers with high surface area—called “nanoflowers”—potentially useful for energy transfer and storage.

If you could brush your cheek against a nanoflower’s microscopic petals, you’d find them cool, hard, and… rusty. Common rust forms the inner skeleton of these lovely and intricate nanostructures, while their outer layer is a kind of plastic.

“Rust will always pose a challenge in Earth’s humid and oxygenated atmosphere,” says Julio M. D’Arcy, assistant professor of chemistry at Washington University in St. Louis and a member of the Institute of Materials Science and Engineering. “Corrosion makes structures fragile and decreases the ability of components to function properly. But in our lab, we’ve learned how to control the growth of rust so that it can serve an important purpose.”

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Mar 29, 2018

Magic Leap Ships First Set of Devices Under Tight Security Constraints

Posted by in category: security

The startup is demanding that developers keep test units in a locked safe.

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Mar 29, 2018

This weekend is your last chance to see a double blue moon until 2037

Posted by in category: futurism

This Saturday is your last chance to see a double blue moon until 2037.

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Mar 29, 2018

CERN Researchers Think They Saw Rare Particle Decay That Could Lead to New Physics

Posted by in category: particle physics

Physicists in Switzerland are on a subatomic hunt that, they hope, will reveal some entirely new results beyond the limits of their theories.

An experiment at CERN in Geneva, called NA62, is designed to let scientists watch a rare kind of particle decay. The team, using a whole new method, may have finally spotted what they’re looking for.

You’ve probably heard of quarks, the building blocks of other subatomic particles. There are six: the common up and down quark, the strange and charm quarks, and the rarest top and bottom quarks. Protons and neutrons contain only up and down quarks.

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Mar 29, 2018

Research enhances performance of Germany’s new fusion device

Posted by in categories: nuclear energy, physics

A team of U.S. and German scientists has used a system of large magnetic “trim” coils designed and delivered by the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) to achieve high performance in the latest round of experiments on the Wendelstein 7-X (W7-X) stellarator. The German machine, the world’s largest and most advanced stellarator, is being used to explore the scientific basis for fusion energy and test the suitability of the stellarator design for future fusion power plants. Such plants would use fusion reactions such as those that power the sun to create an unlimited energy source on Earth.

The new experiments amply demonstrated the ability of the five copper trim coils and their sophisticated control system, whose operation is led on-site by PPPL physicist Samuel Lazerson, to improve the overall performance of the W7-X. “What’s exciting about this is that the trim coils and Sam’s leadership are producing scientific understanding that will help to optimize future stellarators,” said PPPL physicist Hutch Neilson, who oversees the laboratory’s collaboration on the W7-X with the Max Planck Institute of Plasma Physics, which built the machine and now hosts the international team investigating the behavior of plasmas confined in its unique magnetic configuration.

Stellarators are twisty, doughnut-shaped facilities whose configuration contrasts with the smoothly doughnut-shaped facilities called tokamaks that are more widely used. A major advantage of stellarators is their ability to operate continuously with low input power to sustain the plasma without plasma disruptions—a risk that tokamaks face—enabling the facilities to operate efficiently in steady state. A disadvantage is that the twisting geometry is more complex to design and build.

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Mar 29, 2018

US plant that destroys chemical weapons beset by troubles

Posted by in category: futurism

Associated Press historical news archive articles dating back to 1985.

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Mar 29, 2018

That Chinese Space Station Hurtling Toward Earth Could Hit One Of These U.S. Cities

Posted by in categories: education, space

Well, here’s some terrifying news: There’s a Chinese space station out in the galaxy that is hurtling towards Earth, and it is expected to hit the planet on or around Apr. 1, 2018. There’s no stopping it, and scientists have stated that they really don’t have much control over it either. On top of that, it could either cause a lot of damage or it could do almost nothing. In other words, it’s a very unclear situation! The question on everyone’s mind is an important one: where is the Chinese space station going to crash? Do you need to be worried about being destroyed by a flying space station on Easter Sunday?

Here’s the deal: in 2016, China lost control of their first space station, called Tiangong-1, which is about the size of a school bus (so, yes, it’s very large). According to Vox, China had once been planning on trying to give the space station a controlled descent to Earth so that we didn’t all have to worry about having large pieces of it fall on or around our homes. That’s when things got more out of control: the space station malfunctioned, for reasons we still don’t really know. Due to “orbital decay” (which is defined as “the process of prolonged reduction in the altitude of a satellite’s orbit.” So, essentially, it’s when objects enter the Earth’s atmosphere and burn up), the space station has been heading towards Earth since it went off on its own.

The time has now come for that space station to hit Earth. It is said to be about 124 miles above the Earth, and is expected to crash through the atmosphere on or around Apr. 1, according to the European Space Agency. The good news is that a lot of it will burn up in the atmosphere. The bad news is that there will still be some heavy pieces that get through and hit the ground. Also bad news: we can’t control any of it. Oh, and no one knows where it will land.

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Mar 29, 2018

US to demand visa applicants turn over social media history

Posted by in category: futurism

The Trump administration is planning full implementation of its extreme vetting to all non-immigrant visa applicants, with a requirement to disclose social media accounts, phone numbers, and emails.

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Mar 29, 2018

Richard Taylor, Stanford physicist who won Nobel, dies

Posted by in category: particle physics

Shortly after learning he’d won the Nobel Prize in physics, Richard Taylor stared at his reflection in a mirror.

“Murray Gell-Mann is smart. Dick Garwin is smart,” he told himself, referring to two pioneering 20th century physicists. “You are lucky.”

The self-effacing Taylor, a Stanford University professor emeritus of physics who shared the Nobel in 1990 for his role in the discovery of quarks, died Feb. 22 at his home on the Stanford campus. He was 88.

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