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Showing posts from November, 2025

Repeated head impacts may quietly break the brain’s cleanup system

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  A new study examining cognitively impaired professional boxers and mixed martial arts fighters reports that the brain's waste-clearing system appears to weaken after repeated blows to the head. These findings are scheduled to be presented next week at the annual meeting of the Radiological Society of North America (RSNA). Sports-related traumatic brain injuries represent up to 30 percent of all brain injury cases, with boxing and mixed martial arts among the leading contributors. Sustained head impacts over time are known risk factors for both neurodegenerative and neuropsychiatric conditions. How the Glymphatic System Removes Waste From the Brain The glymphatic system consists of fluid-filled channels that help flush waste materials from the brain. Its function is somewhat similar to the lymphatic system that operates throughout the body. "The recently discovered glymphatic system is like the brain's plumbing and garbage disposal system," said Dhanush Amin, M.D., t...

A surprising new method finally makes teflon recyclable

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  New research has identified a straightforward and environmentally friendly way to decompose Teflon, one of the most resilient plastics in use today, and convert it into valuable chemical ingredients. Scientists at Newcastle University and the University of Birmingham have created a clean, energy-saving process for recycling Teflon (PTFE), which is widely recognized for its role in non-stick cookware and in products that must withstand high temperatures and harsh chemicals. The team found that discarded Teflon can be broken apart and reused with only sodium metal and mechanical movement by shaking -- all at room temperature and without toxic solvents. Their study, published in the Journal of the American Chemical Society (JACS), outlines a low-energy and waste-free alternative to standard fluorine recovery techniques. Breaking Carbon-Fluorine Bonds to Recover Useful Fluoride Dr. Roly Armstrong, Lecturer in Chemistry at Newcastle University and corresponding author said: "The pro...

Switching off AI's ability to lie makes it more likely to claim it's conscious, eerie study finds

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  Large language models (LLMs) are more likely to report being self-aware when prompted to think about themselves if their capacity to lie is suppressed, new research suggests. In experiments on artificial intelligence (AI) systems including GPT, Claude and Gemini, researchers found that models that were discouraged from lying were more likely to describe being aware or having subjective experiences when prompted to think about their own thinking. Although all models could claim this to some extent, such claims were stronger and more common when researchers suppressed their ability to roleplay or give deceptive responses. In other words, the less able AI models were to lie, the more likely they were to say they were self-aware. The team published their findings Oct. 30 on the preprint arXiv server. While the researchers stopped short of calling this conscious behavior, they did say it raised key scientific and philosophical questions — particularly as it only happened under condit...

Puzzling ultraviolet radiation in the birthplaces of stars

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  Researchers used the MIRI instrument onboard the James Webb Space Telescope (JWST) to identify the presence of ultraviolet radiation in five young stars in the Ophiuchus region, and to understand its role in the formation of stars. The discovery of UV radiation around these protostars and its significant impact on the surrounding material is a challenge to models describing the formation of stars. Investigating protostars and ultraviolet radiation "We wanted to take a closer look at protostars, i.e., young stars that are still forming deep inside their parent molecular clouds. As protostars accrete mass, they launch part of it outward in the form of jets," says Skretas. These are called outflows, and are the most striking sign of star formation. The scientists were able to show that in order to understand the chemistry and physics of these molecular outflows from young stars, they must take into account the existence of ultraviolet radiation. "This is the first surpri...

Unveiling Science's Evolution!

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  Charting the changing landscape of scientific research is a fundamental challenge in the science of science. We develop diachronic embeddings of scholarly periodicals to quantify “semantic changes” of periodicals across decades, allowing us to track the evolution of research topics and identify rapidly developing fields. By mapping periodicals within a physical-life-health triangle, we reveal an evolving interdisciplinary science landscape, finding an overall trend toward specialization for most periodicals but increasing interdisciplinarity for bioscience periodicals. Analyzing a periodical’s trajectory within this triangle over time allows us to visualize how its research focus shifts. Furthermore, by monitoring the formation of local clusters of periodicals, we can identify emerging research topics such as AIDS research and nanotechnology in the 1980s. Our work offers novel quantification in the science of science and provides a quantitative lens to examine the evolution of s...

A tiny enzyme may hold the key to safer pain relief

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  Researchers at Tulane University, working with teams from eight additional institutions, have identified a previously unknown way that nerve cells send messages. This discovery could change how scientists understand pain and may guide the development of safer and more effective treatments. The work was co-led by Matthew Dalva, director of the Tulane Brain Institute and professor of cell and molecular biology in the School of Science and Engineering, together with Ted Price at the University of Texas at Dallas. Their study shows that neurons can release an enzyme outside the cell that activates pain signals following an injury. The findings, reported in Science, also shed new light on how brain cells strengthen their connections during learning and memory. External Enzyme Linked to Pain Activation "This finding changes our fundamental understanding of how neurons communicate," Dalva said. "We've discovered that an enzyme released by neurons can modify proteins on th...

Scientists uncover a surprising protein that heals stubborn wounds

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When a routine blood test shows high levels of a protein called SerpinB3, it often alerts doctors that something is seriously wrong. Elevated SerpinB3 can be associated with difficult-to-treat cancers or severe inflammatory diseases. SerpinB3 is known as a key protein that helps reveal when the body's barrier tissues, such as the skin and lungs, are under intense strain from cancer or long-term illness. It has typically been viewed as a sign that these protective surfaces are in trouble. Recent work from scientists at Arizona State University adds an unexpected twist. Their research shows that SerpinB3, long regarded mainly as a disease marker, also plays a natural part in helping the body repair itself by supporting wound healing. Chronic Wounds, High Costs Skin wounds remain a major medical challenge. Each year in the U.S., an estimated 6 million wounds occur, and many are slow to heal or difficult to manage. These hard-to-treat injuries are frequently linked with diabetes, bur...

AI creates the first 100-billion-star Milky Way simulation

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  Researchers led by Keiya Hirashima at the RIKEN Center for Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS) in Japan, working with partners from The University of Tokyo and Universitat de Barcelona in Spain, have created the first Milky Way simulation capable of tracking more than 100 billion individual stars across 10 thousand years of evolution. The team achieved this milestone by pairing artificial intelligence (AI) with advanced numerical simulation techniques. Their model includes 100 times more stars than the most sophisticated earlier simulations and was generated more than 100 times faster. The work, presented at the international supercomputing conference SC '25, marks a major step forward for astrophysics, high-performance computing, and AI-assisted modeling. The same strategy could also be applied to large-scale Earth system studies, including climate and weather research. Why Modeling Every Star Is So Difficult For many years, astrophysicists have aim...

Scientists reverse kidney damage in mice, hope for humans next

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  Serious injury to short-term kidney function, known as acute kidney injury (AKI), can be life-threatening and also raise the likelihood of developing permanent chronic kidney disease. AKI can occur after major stressors such as sepsis or heart surgery, and more than half of all intensive care patients experience it. No approved medications currently exist to treat this condition. Researchers at University of Utah Health (U of U Health) have discovered that fatty molecules called ceramides initiate AKI by damaging the mitochondria that supply energy to kidney cells. By using a backup drug candidate designed to alter how ceramides are processed, the team protected mitochondrial structure and prevented kidney injury in mice. "We completely reversed the pathology of acute kidney injury by inactivating ceramides," says Scott Summers, PhD, distinguished professor and Chair of the Department of Nutrition and Integrative Physiology in the University of Utah College of Health and s...

Scientists discover forgotten particle that could unlock quantum computers

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  Quantum computers have the potential to solve problems far beyond the reach of today's fastest supercomputers. But today's machines are notoriously fragile. The quantum bits, or "qubits," that store and process information are easily disrupted by their environment, leading to errors that quickly accumulate. One of the most promising approaches to overcoming this challenge is topological quantum computing, which aims to protect quantum information by encoding it in the geometric properties of exotic particles called anyons. These particles, predicted to exist in certain two-dimensional materials, are expected to be far more resistant to noise and interference than conventional qubits. "Among the leading candidates for building such a computer are Ising anyons, which are already being intensely investigated in condensed matter labs due to their potential realization in exotic systems like the fractional quantum Hall state and topological superconductors," s...

Chemical computer can recognise patterns and perform multiple tasks

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  A chemical computer made from a network of enzymes can perform a variety of tasks, like measuring temperatures or identifying substances, without needing to be rebuilt each time. This makes it more like an adaptive biological system than a digital circuit, and offers the promise of linking computers with biology. Living organisms contain molecular networks that constantly integrate chemical and physical signals, such as when cells sense nutrients, hormones or temperature changes and adjust to stay alive. For decades, researchers have tried to mimic this in a variety of ways, such as building logic gates from DNA, but most of these artificial systems have been either too simple, too rigid or too difficult to scale. Here To Connected   You tube     :  https://www.youtube.com/@ AcademicExcellence-1995 Facebook    :  https://www.facebook.com/ profile.php?id=61566708580399 Twitter        :  https://x.com/Academic199...