Menu

Blog

Page 5224

Jul 18, 2021

The Paradox of a Free-Electron Laser Without the Laser: A New Source of Coherent Radiation

Posted by in categories: biotech/medical, chemistry

A new way of producing coherent light in the ultra-violet spectral region, which points the way to developing brilliant table-top x-ray sources, has been produced in research led at the University of Strathclyde.

The scientists have developed a type of ultra-short wavelength coherent light source that does not require laser action to produce coherence. Common electron-beam based light sources, known as fourth-generation light sources, are based on the free-electron laser (FEL), which uses an undulator to convert electron beam energy into X-rays.

Coherent light sources are powerful tools that enable research in many areas of medicine, biology, material sciences, chemistry, and physics.

Jul 18, 2021

Psilocybin induces rapid and persistent growth of neural connections in the brain’s frontal cortex, study finds

Posted by in category: neuroscience

Harvard scientists have found that a single dose of psilocybin given to mice induces a rapid and long-lasting increase in connections between pyramidal neurons in the medial frontal cortex, an area of the brain known to be involved in control and decision-making. Their new findings are published in the journal Neuron.

Psilocybin — the active component in so-called “magic” mushrooms — has been shown to have profound and long-lasting effects on personality and mood. Preliminary studies have provided hope that psilocybin could help to relieve depression symptoms and treat other mental disorders. But the mechanisms behind these effects remain unclear.

A team of researchers at Yale University were interested in examining whether the lasting therapeutic effects of psilocybin might be caused in part by the substance’s ability to enhance neuroplasticity in the brain.

Jul 18, 2021

Advanced New Artificial Intelligence Software Can Compute Protein Structures in 10 Minutes

Posted by in categories: biotech/medical, robotics/AI

Unlike DeepMind, the UW Medicine team’s method, which they dubbed RoseTTAFold, is freely available. Scientists from around the world are now using it to build protein models to accelerate their own research. Since July, the program has been downloaded from GitHub by over 140 independent research teams.


Accurate protein structure prediction now accessible to all.

Scientists have waited months for access to highly accurate protein structure prediction since DeepMind presented remarkable progress in this area at the 2020 Critical Assessment of Structure Prediction, or CASP14, conference. The wait is now over.

Continue reading “Advanced New Artificial Intelligence Software Can Compute Protein Structures in 10 Minutes” »

Jul 18, 2021

Where You Live Can Greatly Affect Your Heart and Brain Health

Posted by in categories: health, neuroscience, policy

Something to consider.

“The whole idea of lifestyle choices as something everyone can tap into is misleading, when in fact that choice is constrained by what is available to people,” he said. “This is where policy solutions or investments into these neighborhoods to make up for historical disinvestment becomes so important.”


Summary: The neighborhood you live in could have an impact on your brain and cardiovascular health, a new study reports.

Continue reading “Where You Live Can Greatly Affect Your Heart and Brain Health” »

Jul 18, 2021

The Virus Trap: Hollow Nano-Objects Made of DNA Could Trap Viruses and Render Them Harmless

Posted by in categories: biotech/medical, genetics, nanotechnology

To date, there are no effective antidotes against most virus infections. An interdisciplinary research team at the Technical University of Munich (TUM) has now developed a new approach: they engulf and neutralize viruses with nano-capsules tailored from genetic material using the DNA origami method. The strategy has already been tested against hepatitis and adeno-associated viruses in cell cultures. It may also prove successful against coronaviruses.

There are antibiotics against dangerous bacteria, but few antidotes to treat acute viral infections. Some infections can be prevented by vaccination but developing new vaccines is a long and laborious process.

Now an interdisciplinary research team from the Technical University of Munich, the Helmholtz Zentrum München, and the Brandeis University (USA) is proposing a novel strategy for the treatment of acute viral infections: The team has developed nanostructures made of DNA, the substance that makes up our genetic material, that can trap viruses and render them harmless.

Jul 17, 2021

Test flight helps China take a step towards developing space plane

Posted by in category: space travel

The CASC announced its plans to build a reusable space transport system last year, which would involve building a series of spacecraft that take off and land like regular planes, but can reach any corner of the earth within an hour by flying at least five times the speed of sound at a suborbital altitude.


Friday’s test of an experimental vessel is a step towards the development of a hypersonic vehicle that could reach any corner of the Earth within an hour.

Jul 17, 2021

NASA revives ailing Hubble Space Telescope with switch to backup computer

Posted by in categories: computing, space

Hubble is back!


The Hubble Space Telescope has powered on once again! NASA was able to successfully switch to a backup computer on the observatory on Friday (July 16) following weeks of computer problems.

On June 13, Hubble shut down after a payload computer from the 1980s that handles the telescope’s science instruments suffered a glitch. Now, over a month since Hubble ran into issues, which the Hubble team thinks were caused by the spacecraft’s Power Control Unit (PCU), NASA switched to backup hardware and was able to switch the scope back on.

Jul 17, 2021

America, China and the race to the Moon

Posted by in category: space travel

China is playing the long game. It plans to become the leading power in space sometime in the 2040s, through a mixture of its own perseverance and America’s decline.


The eagle and the rabbitHalf a century on, the race back to the Moon looks markedly different from the first.

Jul 17, 2021

China Wants a Chip Machine From the Dutch. The U.S. Said No

Posted by in categories: government, mobile phones, robotics/AI, security

The chip world’s most important machines are made near corn fields in the Netherlands. The U.S. is trying to block China from buying them.


The one-of-a-kind, 180-ton machines are used by companies including Intel Corp., South Korea’s Samsung Electronics Co. and leading Apple Inc. supplier Taiwan Semiconductor Manufacturing Co. to make the chips in everything from cutting-edge smartphones and 5G cellular equipment to computers used for artificial intelligence.

China wants the $150-million machines for domestic chip makers, so smartphone giant Huawei Technologies Co. and other Chinese tech companies can be less reliant on foreign suppliers. But ASML hasn’t sent a single one because the Netherlands—under pressure from the U.S.—is withholding an export license to China.

Continue reading “China Wants a Chip Machine From the Dutch. The U.S. Said No” »

Jul 17, 2021

US Marines testing high-tech drones flying low-tech military grenades

Posted by in categories: drones, military

The US Marine Corps are testing tiny drones capable of performing a range of duties – including striking remote enemy targets with military-grade grenades. The application adds another reason to react fast to any buzzing sounds swiftly approaching from above… See More.


US Marines test the Australian Drone40, a high-tech, multifunctional drone capable of delivering military grenade payloads above targets.

Continue reading “US Marines testing high-tech drones flying low-tech military grenades” »