Menu

Blog

Page 3214

Sep 29, 2021

Physicists Build Mathematical “Playground” To Study Quantum Information Theory

Posted by in categories: computing, mathematics, quantum physics

In a new study from Skoltech and the University of Kentucky, researchers found a new connection between quantum information and quantum field theory. This work attests to the growing role of quantum information theory across various areas of physics. The paper was published in the journal Physical Review Letters.

Quantum information plays an increasingly important role as an organizing principle connecting various branches of physics. In particular, the theory of quantum error correction, which describes how to protect and recover information in quantum computers and other complex interacting systems, has become one of the building blocks of the modern understanding of quantum gravity.

“Normally, information stored in physical systems is localized. Say, a computer file occupies a particular small area of the hard drive. By “error” we mean any unforeseen or undesired interaction which scrambles information over an extended area. In our example, pieces of the computer file would be scattered over different areas of the hard drive. Error correcting codes are mathematical protocols that allow collecting these pieces together to recover the original information. They are in heavy use in data storage and communication systems. Quantum error correcting codes play a similar role in cases when the quantum nature of the physical system is important,” Anatoly Dymarsky, Associate Professor at the Skoltech Center for Energy Science and Technology (CEST), explains.

Sep 29, 2021

Alzheimer’s: ‘Breakthrough’ study finds likely cause

Posted by in categories: biotech/medical, neuroscience

Recent research in mice turned to the blood-brain barrier for clues as to why Alzheimer’s disease occurs and how to stop it.

Sep 29, 2021

Bill Andrews on age reversal and the Betty White Test (videoclip con S/T en Español)

Posted by in categories: biological, life extension

Bill Andrews gives us the simplest definition of aging as well as what he thinks to be accomplished to really admit aging has been cured.

This is an excerpt of a presentation he made last year at the NHIMA. See the description of the video for details.

Continue reading “Bill Andrews on age reversal and the Betty White Test (videoclip con S/T en Español)” »

Sep 29, 2021

Understanding just how big solar flares can get

Posted by in category: existential risks

Not sure if this is new or not. We all know about the Carrington event, but it looks like tree rings reveal a number of much more massive events in the past 10,000 years — perhaps 10 times as strong as the Carrington event, perhaps 100 times or more. (This particular article only references the lower estimates.)


Recasting the iconic Carrington Event as just one of many superstorms in Earth’s past, scientists reveal the potential for even more massive, and potentially destructive, eruptions from the Sun.

Sep 29, 2021

Has the fountain of youth been in our blood all along?

Posted by in categories: biotech/medical, life extension

The search for a fountain of youth has obsessed humankind for millennia, but a new wave of research is showing that the secret may have been running through our veins all along.

Sep 29, 2021

New method makes starch from CO₂ faster than plants can

Posted by in categories: chemistry, food, sustainability

Feeding the world uses enormous amounts of land, water, fertilizer, pesticide, and fuel. In a step towards a more sustainable solution, researchers have designed a method to make starches from carbon dioxide more efficiently than plants do (Science 2,021 DOI: 10.1126/science.abh4049).

The new technique, which relies on chemical catalysts and a curated combination of natural and engineered enzymes, converts CO2 to starch 8.5 times as efficiently as corn plants can.


The advance hints at sustainable, efficient factory production of food and industrial chemicals by.

Continue reading “New method makes starch from CO₂ faster than plants can” »

Sep 29, 2021

Now everyone can build battery-free electronic devices

Posted by in categories: computing, solar power, sustainability

Last year, computer engineers from Northwestern University and Delft University of Technology (TU Delft) introduced the world’s first battery-free Game Boy, which harvests both solar energy and the user’s kinetic energy from button mashing to power an unlimited lifetime of game play.

The same team now introduces a new platform that enables makers, hobbyists and novice programmers to build their own battery-free electronic devices that run with intermittent, harvested energy.

Continue reading “Now everyone can build battery-free electronic devices” »

Sep 29, 2021

A potent SARS-CoV-2 neutralising nanobody shows therapeutic efficacy in the Syrian golden hamster model of COVID-19

Posted by in categories: bioengineering, biotech/medical, health

SARS-CoV-2 remains a global threat to human health particularly as escape mutants emerge. There is an unmet need for effective treatments against COVID-19 for which neutralizing single domain antibodies (nanobodies) have significant potential. Their small size and stability mean that nanobodies are compatible with respiratory administration. We report four nanobodies (C5, H3, C1, F2) engineered as homotrimers with pmolar affinity for the receptor binding domain (RBD) of the SARS-CoV-2 spike protein. Crystal structures show C5 and H3 overlap the ACE2 epitope, whilst C1 and F2 bind to a different epitope. Cryo Electron Microscopy shows C5 binding results in an all down arrangement of the Spike protein. C1, H3 and C5 all neutralize the Victoria strain, and the highly transmissible Alpha (B.1.1.7 first identified in Kent, UK) strain and C1 also neutralizes the Beta (B.1.35, first identified in South Africa). Administration of C5-trimer via the respiratory route showed potent therapeutic efficacy in the Syrian hamster model of COVID-19 and separately, effective prophylaxis. The molecule was similarly potent by intraperitoneal injection.


Neutralizing nanobodies bind SARS-CoV-2 spike RBD and block interaction with ACE2. Nat. Struct. Mol. Biol. 27 846–854 (2020).

Sep 29, 2021

Dark matter detector may have accidentally detected dark energy instead

Posted by in categories: cosmology, particle physics

Last year, physicists reported that an experimental dark matter detector picked up a strange signal that could hint at new physics, with several suspects highlighted. Now, Cambridge scientists have proposed an answer that wasn’t considered at the time – the experiment may have picked up the first direct detection of dark energy, the mysterious force that’s accelerating the expansion of the universe.

Although it’s thought to outnumber regular matter five to one, dark matter remains elusive. It doesn’t interact with light and seems to mostly make itself known through gravitational influence on cosmic scales, like stars, galaxies and galaxy clusters. But once in a while, a dark matter particle might bump into a regular matter particle in a way that we could detect, with the right equipment.

XENON1T was one version of that equipment. Running in Italy between 2016 and 2,018 the experiment was essentially a big tank full of liquid xenon, kept deep underground. The idea was that if a dark matter particle zipped through the tank, it would excite the xenon atoms to produce a flash of light and free electrons, which a suite of sensors can detect.

Sep 29, 2021

Physicists Create Time-Reversed Waves of Optical Light in Head-Spinning First

Posted by in category: physics

Circa 2020


Like watching a movie in reverse, physicists have just demonstrated a new technique for the time-reversal of a wave of optical light.

Continue reading “Physicists Create Time-Reversed Waves of Optical Light in Head-Spinning First” »