БЛОГ

Archive for the ‘computing’ category: Page 513

Nov 23, 2020

Microfluidic Brain-on-a-Chip: Perspectives for Mimicking Neural System Disorders

Posted by in categories: biotech/medical, chemistry, computing, neuroscience

Neurodegenerative diseases (NDDs) include more than 600 types of nervous system disorders in humans that impact tens of millions of people worldwide. Estimates by the World Health Organization (WHO) suggest NDDs will increase by nearly 50% by 2030. Hence, development of advanced models for research on NDDs is needed to explore new therapeutic strategies and explore the pathogenesis of these disorders. Different approaches have been deployed in order to investigate nervous system disorders, including two-and three-dimensional (2D and 3D) cell cultures and animal models. However, these models have limitations, such as lacking cellular tension, fluid shear stress, and compression analysis; thus, studying the biochemical effects of therapeutic molecules on the biophysiological interactions of cells, tissues, and organs is problematic. The microfluidic “organ-on-a-chip” is an inexpensive and rapid analytical technology to create an effective tool for manipulation, monitoring, and assessment of cells, and investigating drug discovery, which enables the culture of various cells in a small amount of fluid (10−9 to 10−18 L). Thus, these chips have the ability to overcome the mentioned restrictions of 2D and 3D cell cultures, as well as animal models. Stem cells (SCs), particularly neural stem cells (NSCs), induced pluripotent stem cells (iPSCs), and embryonic stem cells (ESCs) have the capability to give rise to various neural system cells. Hence, microfluidic organ-on-a-chip and SCs can be used as potential research tools to study the treatment of central nervous system (CNS) and peripheral nervous system (PNS) disorders. Accordingly, in the present review, we discuss the latest progress in microfluidic brain-on-a-chip as a powerful and advanced technology that can be used in basic studies to investigate normal and abnormal functions of the nervous system.

Nov 23, 2020

World’s biggest computer chip can simulate the future ‘faster than the laws of physics’, creators claim

Posted by in categories: computing, physics

Trillion-transistor chip can run real-world simulations with over a million variables faster than real-time.

Nov 23, 2020

Meet 10 Companies Working On Reading Your Thoughts (And Even Those Of Your Pets)

Posted by in categories: computing, neuroscience

Are brain-computer interfaces the next way we will communicate with machines and even with one another? Here are 10 companies working on decoding our thoughts.

Nov 23, 2020

Canadian musician Angie C just used a brainwave-reader to play the monster analogue synth TONTO with her mind

Posted by in category: computing

Coombes described the process to CBC’s Calgary Eyeopener podcast. Her thoughts would be processed by headset via a computer, and then converted to voltages before being assigned to a parameter on the synth.

Thinking about images and questions that stimulated more brainwave activity yielded more dramatic results — even thinking about the word “why” had an effect on volume and pitch.

Continue reading “Canadian musician Angie C just used a brainwave-reader to play the monster analogue synth TONTO with her mind” »

Nov 22, 2020

AMD’s Infinity Cache is the MVP of the RX 6000-series, and it’s only going to get better

Posted by in categories: computing, futurism

There is the potential for benefits from providing more direct controls.


“The important thing to realise here is that, when you’re bringing a new technology like this to the market, it’s very, very important that it’s as transparent as possible to developers initially, right?” Pomianowski says. “You can’t bring something like this to the market, that’s a departure from the traditional memory subsystem on the GPU, and have a high barrier of entry to the developers where they have to programme in a particular way to get benefit from it.”

But what if a developer did program specifically for Infinity Cache? That’s a question raised during an AMD roundtable discussion ahead of the RX 6800 XT and RX 6800 release date, and AMD is quietly optimistic for future performance if a developer were to team up with the red team for a little more juice.

Continue reading “AMD’s Infinity Cache is the MVP of the RX 6000-series, and it’s only going to get better” »

Nov 22, 2020

COVID-19 Researchers Identify Features of a Virus Super-Spreader

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

Sneezes from people who have congested noses and a full set of teeth travel about 60% farther than from people who don’t, according to a new study.

New research from the University of Central Florida has identified physiological features that could make people super-spreaders of viruses such as COVID-19.

In a study appearing this month in the journal Physics of Fluids, researchers in UCF’s Department of Mechanical and Aerospace Engineering used computer-generated models to numerically simulate sneezes in different types of people and determine associations between people’s physiological features and how far their sneeze droplets travel and linger in the air.

Nov 21, 2020

This Weird, Cheap Quantum Device Can Run For a Year With a Single Kick of Energy

Posted by in categories: computing, quantum physics

As our need for electronic gadgets and sensors grows, scientists are coming up with new ways to keep devices powered for longer on less energy.

The latest sensor to be invented in the lab can go for a whole year on a single burst of energy, aided by a physics phenomenon known as quantum tunnelling.

The tunnelling aspect means that with the help of a 50-million-electron jumpstart, this simple and inexpensive device (made up of just four capacitors and two transistors) can keep going for an extended period of time.

Nov 20, 2020

New System Reads Your Brain Waves, Draws a Picture of What You’re Thinking About

Posted by in categories: computing, neuroscience

Think of something as simple as “smile” and the system would generate a matching headshot.

Nov 20, 2020

Cracking the secrets of an emerging branch of physics

Posted by in categories: computing, quantum physics

This discovery opens the door to topological quantum computing. Current quantum computing systems, where the elemental units of calculation are qubits that perform superfast calculations, require superconducting materials that only function in extremely cold conditions. Fluctuations in heat can throw one of these systems out of whack.

“The properties inherent to materials such as TaP could form the basis of future qubits,” says Nguyen. He envisions synthesizing TaP and other topological semimetals — a process involving the delicate cultivation of these crystalline structures — and then characterizing their structural and excitational properties with the help of neutron and X-ray beam technology, which probe these materials at the atomic level. This would enable him to identify and deploy the right materials for specific applications.

“My goal is to create programmable artificial structured topological materials, which can directly be applied as a quantum computer,” says Nguyen. “With infinitely better heat management, these quantum computing systems and devices could prove to be incredibly energy efficient.”

Nov 19, 2020

Going beyond the anti-laser may enable long-range wireless power transfer

Posted by in categories: biotech/medical, computing, mobile phones

Ever since Nikola Tesla spewed electricity in all directions with his coil back in 1891, scientists have been thinking up ways to send electrical power through the air. The dream is to charge your phone or laptop, or maybe even a healthcare device such as a pacemaker, without the need for wires and plugs. The tricky bit is getting the electricity to find its intended target, and getting that target to absorb the electricity instead of just reflect it back into the air—all preferably without endangering anyone along the way.

These days, you can wirelessly charge a smartphone by putting it within an inch of a charging station. But usable long-range wireless power transfer, from one side of a room to another or even across a building, is still a work in progress. Most of the methods currently in development involve focusing narrow beams of energy and aiming them at their intended target. These methods have had some success, but are so far not very efficient. And having focused electromagnetic beams flying around through the air is unsettling.

Now, a team of researchers at the University of Maryland (UMD), in collaboration with a colleague at Wesleyan University in Connecticut, have developed an improved technique for wireless power transfer technology that may promise long-range power transmission without narrowly focused and directed energy beams. Their results, which widen the applicability of previous techniques, were published Nov. 17, 2020 in the journal Nature Communications.