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Archive for the ‘biological’ category: Page 82

Feb 22, 2022

Researchers use magnetic systems to artificially reproduce the learning and forgetting functions of the brain

Posted by in categories: biological, information science, nanotechnology, robotics/AI

With the advent of Big Data, current computational architectures are proving to be insufficient. Difficulties in decreasing transistors’ size, large power consumption and limited operating speeds make neuromorphic computing a promising alternative.

Neuromorphic computing, a new brain-inspired computation paradigm, reproduces the activity of biological synapses by using artificial neural networks. Such devices work as a system of switches, so that the ON position corresponds to the information retention or “learning,” while the OFF position corresponds to the information deletion or “forgetting.”

In a recent publication, scientists from the Universitat Autònoma de Barcelona (UAB), the CNR-SPIN (Italy), the Catalan Institute of Nanoscience and Nanotechnology (ICN2), the Institute of Micro and Nanotechnology (IMN-CNM-CSIC) and the ALBA Synchrotron have explored the emulation of artificial synapses using new advanced material devices. The project was led by Serra Húnter Fellow Enric Menéndez and ICREA researcher Jordi Sort, both at the Department of Physics of the UAB, and is part of Sofia Martins Ph.D. thesis.

Feb 21, 2022

“Self-Destruct” Switches Engineered Into GM Microbes

Posted by in categories: biological, chemistry, engineering, genetics, space

Tae Seok Moon, associate professor of energy, environmental and chemical engineering at the McKelvey School of Engineering at Washington University in St. Louis, has taken a big step forward in his quest to design a modular, genetically engineered kill switch that integrates into any genetically engineered microbe, causing it to self-destruct under certain defined conditions.

His research was published Feb. 3 in the journal Nature Communications.

Moon’s lab understands microbes in a way that only engineers would, as systems made up of sensors, circuits and actuators. These are the components that allow microbes to sense the world around them, interpret it and then act on the interpretation.

Feb 20, 2022

New catalysts steer hydrogen fuel cells into mainstream

Posted by in categories: biological, chemistry, space travel, sustainability

Cornell chemists have discovered a class of nonprecious metal derivatives that can catalyze fuel cell reactions about as well as platinum, at a fraction of the cost.

This finding brings closer a future where fuel cells efficiently power cars, generators and even spacecraft with minimal greenhouse gas emissions.

“These less expensive metals will enable wider deployment of hydrogen fuel cells,” said Héctor D. Abruña, the Émile M. Chamot Professor in the Department of Chemistry and Chemical Biology in the College of Arts and Sciences. “They will push us away from and toward .”

Feb 17, 2022

Habitable Conditions in the Martian Subsurface

Posted by in categories: biological, space

A Martian biosphere may not be hiding only in the deep subsurface.


But let’s not forget habitable niches in salts, ices, and caves!

Feb 13, 2022

Using algorithms to discover new mathematics

Posted by in categories: biological, chemistry, information science, mathematics, physics

Fundamental constants like e and π are ubiquitous in diverse fields of science, including physics, biology, chemistry, geometry, and abstract mathematics. Nevertheless, for centuries new mathematical formulas relating fundamental constants are scarce and are usually discovered sporadically by mathematical intuition or ingenuity.

Our algorithms search for new mathematical formulas. The community can suggest proofs for the conjectures or even propose or develop new algorithms. Any new conjecture, proof, or algorithm suggested will be named after you.

Feb 12, 2022

Moon develops targeted, reliable, long-lasting kill switch

Posted by in categories: biological, chemistry, engineering, genetics, space

Tae Seok Moon, associate professor of energy, environmental and chemical engineering at the McKelvey School of Engineering at Washington University in St. Louis, has taken a big step forward in his quest to design a modular, genetically engineered kill switch that integrates into any genetically engineered microbe, causing it to self-destruct under certain defined conditions.

His research was published Feb. 3 in the journal Nature Communications.

Feb 12, 2022

Vitalik Buterin on Ethereum and immortality

Posted by in categories: biological, blockchains, cryptocurrencies, life extension, security

In this episode of UpOnly, the creator of Ethereum Vitalik Buterin talks origin stories, his motivation, the future of Ethereum, and even biological sciences.

Presented by FTX: https://uponyl.tv/ftx.

Continue reading “Vitalik Buterin on Ethereum and immortality” »

Feb 12, 2022

For The First Time Ever, Evidence of Ancient Life Was Discovered Inside a Ruby

Posted by in category: biological

Circa 2021


A ruby that formed in Earth’s crust 2.5 billion years ago encases evidence for early life, wriggling around in the planet’s mud.

Trapped within the precious stone, geologists have identified residue of a form of pure carbon called graphite that, they say, is most likely biological in origin, the remains of some ancient microorganism from the time before multicellular life emerged on Earth.

Continue reading “For The First Time Ever, Evidence of Ancient Life Was Discovered Inside a Ruby” »

Feb 10, 2022

The Science of Aliens, Part 10: Will an Alien Biosphere be Toxic?

Posted by in categories: biological, science

An alien biosphere may be harmful to us in many ways, thus adequate planetary protections measures are essential.


Probably — that’s why planetary protection guidelines need to be enforced.

Continue reading “The Science of Aliens, Part 10: Will an Alien Biosphere be Toxic?” »

Feb 7, 2022

New Reprogrammable Chip Lets AI Learn Continuously—Just Like the Brain

Posted by in categories: biological, robotics/AI

Efforts to mimic the brain in silicon—a field known as neuromorphic computing—have a long pedigree, and have seen significant investments from computing powerhouses like Intel and IBM. So far, most research has focused on replicating the functionality and connectivity of biological neurons and synapses in the hope of replicating the brain’s incredible learning efficiency.

One feature of neurons that has received less attention is the way they’re able to reorganize themselves in response to experience. This powerful capability allows the brain to change both its structure and function as it learns, optimizing its underlying hardware to new challenges on the fly.

Now though, a team led by engineers from Purdue University has demonstrated new circuit components whose functions can be reconfigured with simple electronic pulses. This allows them to seamlessly switch between acting as resistors, memory capacitors, artificial neurons, and artificial synapses. The breakthrough opens the door to creating dynamic neural networks in hardware that can rewire themselves as they learn—just like the brain.

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