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כתבות אחרונות מאתר 'Phys'
Phys

Tracking visits to public points of interest can inform community health measures‎

It's not so much where people live, but where they frequently spend their time, that can provide useful information for predicting community health measures. A team led by geographers in the Penn State College of Earth and Mineral Sciences found that adding place visitation data—geographic data points collected from millions of anonymous cellphone users with GPS-enabled devices—to a population health model increased the model's predictive performance by an average of 7.5%.

04:28
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Phys

Sharks on the move expose the need for international conservation efforts‎

Understanding the migration pathways of sharks and rays is key to conserving some of the world's most endangered marine species, according to new University of Queensland research.

03:48
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Phys

Survey reveals significant gap across 64 countries between commitment to the rule of law and its implementation‎

A new report by the International Bar Association (IBA) has found a significant gap between the importance legal professionals attach to fundamental rule of law principles and their assessment of how effectively those principles are implemented in practice.

03:27
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Phys

Forest structure matters more than topography in shaping plant diversity in Southern Apennine old-growth forests‎

A study in Pollino National Park shows that large trees, complex canopies and deadwood diversity play a major role in shaping vascular plant communities, highlighting the ecological value of one of Italy's most remarkable old-growth forest landscapes.

03:02
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Phys

Long-term oyster reef restoration shows clear success in murky waters‎

Large-scale oyster reef restoration in the Chesapeake Bay is successfully creating three-dimensional habitats that support larger, more diverse fish communities, according to new research from scientists at the University of Maryland, Baltimore County (UMBC), the Smithsonian Environmental Research Center and the National Oceanic and Atmospheric Administration (NOAA). The study, published in Ecosphere, provides compelling evidence that restoration efforts are shifting underwater ecosystems from communities dominated by small, transient schooling fish to those supporting larger, resident species.

02:51
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Phys

Hot electrons reveal electronic collisions may raise resistance in twisted graphene‎

When a material heats up, its electrical resistance often rises. The harder question is what, exactly, is getting in the way. The electrons carrying the current may be scattered by vibrations of the material's atomic lattice, known as phonons. They may also collide with one another. Frustratingly, a conventional temperature test warms the electrons and the lattice together, so the effects arrive tangled in the same resistance measurement.

02:41
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Phys

Device simulates natural conditions to grow biofilms and test their antibiotic susceptibility more accurately‎

Biofilms are complex microbial communities that adhere to a surface and encase themselves in a viscous matrix they produce. This structure protects bacteria from antibiotics and the immune system far more effectively than if they lived in a free-floating state, making biofilms one of the most common causes of hard-to-treat chronic infections—such as respiratory infections in people with cystic fibrosis and chronic obstructive pulmonary disease (COPD), chronic wounds, or infections associated with catheters and prosthetic devices. Added to this is the global rise in antibiotic resistance, which makes it increasingly urgent to have tools capable of predicting which treatment will work in each case.

02:41
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Phys

Building big with DNA gets a software upgrade‎

Forty-four years ago, Nadrian Seeman published his groundbreaking ideas on using DNA as a structural material, expanding DNA's significance far beyond its role as a carrier of genetic information. Since then, the steadily growing field of DNA nanotechnology has seen numerous innovations. One was the DNA origami technique, which enables researchers to fold a single long strand of DNA into a desired 2D or 3D shape.

02:31
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Phys

ChatGPT at university: Study maps why students stick with AI for learning‎

What factors influence students' decisions about whether they will continue to use ChatGPT for learning in the future? This was the question addressed by a new study from ELTE's Faculty of Informatics, which used an interpretable machine learning framework to identify the factors that most strongly influence the use of generative artificial intelligence in higher education.

02:27
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Phys

Thinking outside the binding site: Drug molecule makes a square peg fit a round hole‎

A square peg doesn't fit a round hole. But what if the peg could change the shape of the hole? A newly developed drug molecule can do something surprisingly similar when binding to its target protein, according to a University at Buffalo-led study published Tuesday (Sept. 15) in Angewandte Chemie International Edition.

02:27
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