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Archive for the ‘engineering’ category: Page 48

Jul 22, 2023

Dr. Ross Uhrich, DMD, MBA — Program Manager, Advanced Research Projects Agency for Health (ARPA-H)

Posted by in categories: biotech/medical, engineering, government, health, military

Is Program Manager, Advanced Research Projects Agency for Health (ARPA-H — https://arpa-h.gov/people/ross-uhrich/), which is focused on advancing high-potential, high-impact biomedical and health research that cannot be readily accomplished through traditional research or commercial activity, accelerating better health outcomes targeting society’s most challenging health problems.

Under the ARPA-H portfolio, Dr. Uhrich is responsible for the recently launched Novel Innovations for Tissue Regeneration in Osteoarthritis (NITRO — https://arpa-h.gov/engage/programs/nitro/) program which seeks to develop new ways of helping the human body repair its own joints, with the goal of revolutionizing treatment for osteoarthritis — a common and often very painful condition where bones and cartilage break down.

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Jul 21, 2023

Hydrogen from sunlight: US researcher set conversion efficiency record

Posted by in categories: chemistry, energy, engineering, transportation

Built using inexpensive semiconductors, the device packs all components to make hydrogen and can be scaled.

A research team led by Aditya Mohite, a professor of chemical and biomolecular engineering at Rice University in the US, has designed a device that can use sunlight to generate hydrogen, with a record efficiency of 20.8 percent, a press release said.

Hydrogen is being touted as the future of clean energy due to its high energy density that could be deployed even to fly large planes. However, the process of generating hydrogen is currently heavily dependent on fossil fuels. For hydrogen to herald a new future in clean energy, it needs to be produced sustainably and without carbon emissions.

Jul 21, 2023

A Cracked Piece of Metal Healed Itself in an Experiment That Stunned Scientists

Posted by in category: engineering

File this under ‘That’s not supposed to happen!’: Scientists observed a metal healing itself, something never seen before. If this process can be fully understood and controlled, we could be at the start of a whole new era of engineering.

A team from Sandia National Laboratories and Texas A&M University was testing the resilience of the metal, using a specialized transmission electron microscope technique to pull the ends of the metal 200 times every second. They then observed the self-healing at ultra-small scales in a 40-nanometer-thick piece of platinum suspended in a vacuum.

Cracks caused by the kind of strain described above are known as fatigue damage: repeated stress and motion that causes microscopic breaks, eventually causing machines or structures to break. Amazingly, after about 40 minutes of observation, the crack in the platinum started to fuse back together and mend itself before starting again in a different direction.

Jul 20, 2023

“Absolutely Stunning” — Scientists Discover Metals That Can Heal Themselves

Posted by in categories: engineering, materials

Microscopic cracks vanish in experiments, revealing possibility of self-healing machines.

In a groundbreaking discovery, scientists have for the first time observed metal spontaneously healing its microscopic cracks, upending traditional material theories. This observation could lead to self-healing machines, significantly enhancing their safety and lifespan. The phenomenon, confirming a theory proposed in 2013, may pave the way for an engineering revolution, though further research is necessary to fully understand its practical applicability.

Discovery of Self-healing Metal Phenomenon.

Jul 19, 2023

Stunning discovery: First evidence of a self-healing metal

Posted by in categories: engineering, nanotechnology, transportation

A team of scientists from Sandia National Laboratories and Texas A&M University has recently witnessed for the first time a stunning phenomenon: pieces of metal cracking, then fusing back together without any human intervention.

If this amazing phenomenon can be harnessed, it could give rise to an engineering revolution in which self-healing bridges, engines, or airplanes could reverse damage caused by wear and tear and thus become safer and longer-lasting.

“This was absolutely stunning to watch first-hand,” said Brad Boyce, a materials scientist at Sandia. “What we have confirmed is that metals have their own intrinsic, natural ability to heal themselves, at least in the case of fatigue damage at the nanoscale.”

Jul 19, 2023

Psychological study suggests arithmetic is biologically-based and a natural consequence of our perception

Posted by in categories: engineering, mathematics

Everyone knows that 2 + 2 = 4, but why do we have arithmetic in the first place, and why is it true? Researchers at the University of Canterbury have recently answered these questions by “reverse engineering” arithmetic from a psychological perspective. To do this, they considered all possible ways that quantities could be combined, and proved (for the first time in mathematical terms) that addition and multiplication are the simplest.

Their is based on four —principles of perceptual organization—that shape how we and other animals experience the world. These assumptions eliminate all possibilities except arithmetic, like how a sculptor’s work reveals a statue hidden in a block of stone.

Monotonicity is the idea of “things changing in the same direction,” and helps us keep track of our place in the world, so that when we approach an object it looms larger but smaller when we move away. Convexity is grounded in intuitions of betweenness. For example, the four corners of a football pitch define the playing field even without boundary lines connecting them. Continuity describes the smoothness with which objects seem to move in space and time. Isomorphism is the idea of sameness or analogy. It’s what allows us to recognize that a cat is more similar to a dog than it is to a rock.

Jul 19, 2023

Scientists use supercomputer to learn how cicada wings kill bacteria

Posted by in categories: biological, chemistry, engineering, nanotechnology, supercomputing

Over the past decade, teams of engineers, chemists and biologists have analyzed the physical and chemical properties of cicada wings, hoping to unlock the secret of their ability to kill microbes on contact. If this function of nature can be replicated by science, it may lead to development of new products with inherently antibacterial surfaces that are more effective than current chemical treatments.

When researchers at Stony Brook University’s Department of Materials Science and Chemical Engineering developed a simple technique to duplicate the cicada wing’s nanostructure, they were still missing a key piece of information: How do the nanopillars on its surface actually eliminate bacteria? Thankfully, they knew exactly who could help them find the answer: Jan-Michael Carrillo, a researcher with the Center for Nanophase Materials Sciences at the Department of Energy’s Oak Ridge National Laboratory.

For nanoscience researchers who seek computational comparisons and insights for their experiments, Carrillo provides a singular service: large-scale, high-resolution molecular dynamics (MD) simulations on the Summit supercomputer at the Oak Ridge Leadership Computing Facility at ORNL.

Jul 18, 2023

Chemical compounds reverse cell aging, study finds

Posted by in categories: biotech/medical, chemistry, engineering, life extension

(NewsNation) — A new study claims to have found chemical compounds that can actually reverse the effects of aging, though so far results have been limited to animal studies.

Harvard Medical School, University of Maine and Massachusetts Institute of Technology scientists collaborated on the study, published in the journal Aging. Researchers found it was possible to reverse cellular engineering rather than simply delay it.

They used six chemical compounds to reverse aging in cells, returning them to a youthful state without having them revert too far and become cancerous.

Jul 17, 2023

Research team creates open-source medicine autoinjector—for a tenth of the cost

Posted by in categories: biotech/medical, business, engineering

Sir Frederick Banting was clearly ahead of his time. He is also an inspiration for a new open source self-administering drug delivery device. Long before open source was an option or even a concept, the now-celebrated former Western lecturer refused to patent insulin because he wanted it to be inexpensive and widely available for the betterment of all.

Now, 100 years after Banting won the Nobel Prize for his discovery, Western researchers are at it again. A team led by engineering and Ivey Business School professor Joshua Pearce has developed a new 3D printed, completely open-source —a device designed to deliver a single dose of medicine—for a tenth of the cost of a commercially purchased product.

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Jul 17, 2023

Age Reversal Breakthrough: Harvard/MIT Discovery Could Enable Whole-Body Rejuvenation

Posted by in categories: education, engineering, life extension

In a pioneering study, researchers from Harvard Medical School, University of Maine, and MIT

MIT is an acronym for the Massachusetts Institute of Technology. It is a prestigious private research university in Cambridge, Massachusetts that was founded in 1861. It is organized into five Schools: architecture and planning; engineering; humanities, arts, and social sciences; management; and science. MIT’s impact includes many scientific breakthroughs and technological advances. Their stated goal is to make a better world through education, research, and innovation.

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