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Jul 22, 2019

A Faster Way to Rearrange Atoms Could Lead to Powerful Quantum Sensors

Posted by in categories: computing, engineering, particle physics, quantum physics

The fine art of adding impurities to silicon wafers lies at the heart of semiconductor engineering and, with it, much of the computer industry. But this fine art isn’t yet so finely tuned that engineers can manipulate impurities down to the level of individual atoms.

As technology scales down to the nanometer size and smaller, though, the placement of individual impurities will become increasingly significant. Which makes interesting the announcement last month that scientists can now rearrange individual impurities (in this case, single phosphorous atoms) in a sheet of graphene by using electron beams to knock them around like croquet balls on a field of grass.

The finding suggests a new vanguard of single-atom electronic engineering. Says research team member Ju Li, professor of nuclear science and engineering at MIT, gone are the days when individual atoms can only be moved around mechanically—often clumsily on the tip of a scanning tunneling microscope.

Jul 22, 2019

Microsoft Places a Billion-Dollar Bet on Superintelligent A.I.

Posted by in categories: Elon Musk, robotics/AI

A partnership with Sam Altman and Elon Musk’s OpenAI looks to be a win-win for both companies. But a “holy grail” breakthrough is likely decades away.

Jul 22, 2019

Learning from photos, a deep neural network identifies deepfakes

Posted by in category: robotics/AI

They’re known as deepfakes – photos or videos that have been very convincingly manipulated to depict people saying or doing things that they never actually said or did. They’re potentially quite the problem, so an experimental new deep neural network has been designed to spot them.

Jul 22, 2019

Clinicial Trial of Nicotinamide Riboside Completed

Posted by in categories: biotech/medical, life extension

Today, we want to highlight a recent human trial of the popular supplement nicotinamide riboside, a compound that has been shown in mice to restore NAD+ levels. The compound has had impressive results against some aspects of aging in mouse studies, and there is now some more data for NR in humans [1].

What is nicotinamide riboside?

Nicotinamide adenine dinucleotide (NAD+) is a chemical that facilitates the production of energy from sugar and is present in every cell in our body. As well as being important in energy production, it is also involved in DNA repair, cellular signaling, and many other cell functions.

Jul 22, 2019

Curious About Consciousness? Ask the Self-Aware Machines

Posted by in category: robotics/AI

Consciousness is a famously hard problem, so Hod Lipson is starting from the basics: with self-aware robots that can help us understand how we think.

Jul 22, 2019

Quantum Darwinism, an Idea to Explain Objective Reality, Passes First Tests

Posted by in category: quantum physics

Three experiments have vetted quantum Darwinism, a theory that explains how quantum possibilities can give rise to objective, classical reality.

Jul 22, 2019

Blocking protein’s activity restores cognition in old mice

Posted by in categories: life extension, neuroscience

Brain cells called microglia serve as the brain’s garbage crew, scarfing up bits of cellular debris. But their underperformance in aging brains contributes to neurodegeneration. Now, a possible workaround?

Jul 22, 2019

The breakthrough of quantum sensors is due to vibrations that occur naturally in artificial atom

Posted by in categories: particle physics, quantum physics

When one atom emits light, they do so in a separate package called a photon. When this light is measured, this discrete or granular nature leads to small brightness fluctuations because two or more photons never emit simultaneously.

Jul 22, 2019

It May Be Possible To Avoid Developing Dementia

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

Scientists from the University of Exeter believe it may be possible to avoid developing dementia, and there are 5 ways that can help to reduce the risk, findings were presented at the Alzheimer’s Association International Conference.

As published in the journal JAMA living a healthy lifestyle may help reduce the risk of dementia even if you have a genetic risk; risk of dementia in those with a higher genetic risk who followed a healthy lifestyle were found to be at 32% lower risk than those with an unhealthy lifestyle.

Data was studied from 196,383 adults of European ancestry who were 60+ years old; 1,769 cases of dementia were identified over an 8 years follow up period; those with high genetic risk and an unhealthy lifestyle were found to be almost 3 times more likely to develop dementia.

Jul 22, 2019

New Cells Discovered That May Heal Hearts

Posted by in category: biotech/medical

A previously unidentified cell population in the pericardial fluid found within the sac around the heart has been identified in a collaborative study at the University of Calgary which may lead to new treatments for those with injured hearts, as published in the journal Immunity.

Discovered in the pericardial fluid of a mouse with heart injury, a Gata6+ pericardial cavity macrophage cell was found to help heal injured hearts in mice; the same cells were also found within human pericardium of those with injured hearts, confirming the repair cells offer promise of a new therapy for patients with heart disease.

“The fuel that powered this study is the funding from the Heart and Stroke Foundation of Canada, the collaboration between two major research institutes at CSM (Snyder and Libin) and the important contribution of philanthropy from the Libin and Snyder families to obtain imaging equipment available to very few programs globally,” says Dr. Paul Kubes.