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The Army is looking at its Plasma Acoustic Shield System as a checkpoint defender, for now. But the original idea – and the long-term goal of the project – is to have it be the first baby step towards a portable, lethal laser weapon.

Pelt2The effort, by the U.S. Army’s Advanced Energy Armaments Systems Division and Stellar Photonics, has a lot in common with another military laser project: the Pulsed Energy Projectile being developed by Mission Systems for the Marines. But there are three key differences. The current PEP is a big (450 lb) chemical laser with a limited number of shots, whereas PASS is a small solid-state laser that just needs electricity. The PEP creates plasma by vaporising the outer layer surface it hits (such as your shirt), whereas PASS can create plasma in mid-air by focusing to a point. And PEP fires a single pulse, whereas PASS uses a double pulse which Stellar claim is far more efficient at creating a shockwave.

You can get some idea from the Small Business Initiative Proposal the company submitted in ‘04 for a “Man-portable Integrated Laser Assault Rifle”:

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NASA, one of SpaceX’s biggest customers, also prohibits its employees from using Zoom, said Stephanie Schierholz, a spokeswoman for the U.S. space agency.

The Federal Bureau of Investigation’s Boston office on Monday issued a warning about Zoom, telling users not to make meetings on the site public or share links widely after it received two reports of unidentified individuals invading school sessions, a phenomenon known as “zoombombing.”

Investigative news site The Intercept on Tuesday reported that Zoom video is not end-to-end encrypted between meeting participants, and that the company could view sessions.

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Dozens of other teams around the world have potential vaccines in development.

But the Pittsburgh research is the first study on a Covid-19 vaccine candidate to be published after critique from fellow scientists at outside institutions.

The scientists were able to act quickly because they had already laid the groundwork during earlier epidemics of coronaviruses: Sars in 2003 and Mers in 2014.

“These two viruses, which are closely related to[Covid-19], teach us that a particular protein, called a spike protein, is important for inducing immunity against the virus. We knew exactly where to fight this new virus,” said Andrea Gambotto, associate professor of surgery at the Pittsburgh School of Medicine.

Continue reading “Potential coronavirus vaccine ‘generates enough antibodies to fight off virus’” | >

Can we build a better world with the lessons learned around this pandemic?

There is discussion that globalism will give way to community resilience and local digital manufacture, storage and transportation to provide abundant resources for normal and unanticipated needs.

#CommunityResilience #CommunityResourceCentres

We must pressure our leaders to take the long view in any coronavirus economic recovery package, even if this feels like a short-term emergency.

Continue reading “We aren’t just stopping coronavirus. We’re building a new world” | >

Cells will ramp up gene expression in response to physical forces alone, a new study finds. Gene activation, the first step of protein production, starts less than one millisecond after a cell is stretched—hundreds of times faster than chemical signals can travel, the researchers report.

The scientists tested forces that are biologically relevant—equivalent to those exerted on by breathing, exercising or vocalizing. They report their findings in the journal Science Advances.

“We found that force can activate genes without intermediates, without enzymes or signaling molecules in the cytoplasm,” said University of Illinois mechanical science and engineering professor Ning Wang, who led the research. “We also discovered why some genes can be activated by force and some cannot.”

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