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כתבות אחרונות מאתר 'Phys'
Phys

Bottlenose dolphins in the Adriatic Sea seem to be heavily reliant on trawlers for food‎

Bottlenose dolphins in the Adriatic Sea are spending much of their time following trawlers to scavenge for food, scientists say. The Adriatic seabed has been plowed by bottom trawlers for decades, resulting in ecosystem damage. Many apex predators are no longer present there. Only bottlenose dolphins are left, and the frequency of their presence around fishing trawlers—up to 76% of the trawlers inspected by scientists off Marche, Italy, were followed by dolphins—suggests they may be struggling to hunt normally.

07:17
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Phys

Many students listen to music to focus and stay motivated while they study—but it doesn't always help‎

Walk into any college library and you will likely see students wearing headphones and listening to music.

05:57
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Phys

Feline fleas carry bacteria linked to human disease in South Texas, study finds‎

As human cases of flea-borne murine typhus continue to occur in South Texas, researchers are working to better understand the role cats and their fleas may play in the disease's transmission cycle.

05:06
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Phys

The center has shifted: Multifunctional facility in Japan reshapes where people linger‎

Suburban city centers across Japan are gradually declining as residents shift to car-oriented shopping malls in outlying areas. Urban planners have sought to reverse this trend through urban catalytic projects, strategically placed facilities designed to trigger broader regeneration. Yet empirical evidence on whether such projects actually redirect people's stay behavior beyond the facility itself has remained scarce.

04:26
תפריט כתבה
Phys

Hantaviruses may have co-evolved with rodents for ages, helping explain silent spread‎

What does a hantavirus do inside its rodent hosts? How do these viruses move through animal populations? And how is it that they cause almost no apparent symptoms in rodents, yet can be nearly fatal in humans? Specially Appointed Professor Hiroaki Kariwa has been studying hantaviruses at Hokkaido University for more than 35 years, and these are some of the questions that have driven his research. Over the years, his team has uncovered important insights into the ecology and evolution of hantaviruses, including the discovery of a previously unknown strain, the Hokkaido virus.

03:27
תפריט כתבה
Phys

Airborne AI spots underwater munitions in shallow seas with high precision‎

A new airborne imaging approach can reliably detect unexploded weapons that lie in shallow coastal waters and remain an ongoing hazard to public safety, marine ecosystems and infrastructure worldwide. By combining advanced multispectral sensing with artificial intelligence, the researchers were able to identify underwater munitions with high confidence, even when they are partially hidden by sediment, biological growth or debris.

03:27
תפריט כתבה
Phys

Postwar research compact fueled U.S. prosperity for eight decades, argues commentary‎

As the United States celebrates 250 years of independence, Science has published a commentary by Johns Hopkins University President Ron Daniels highlighting the impact of the reimagining of the American university pioneered by Johns Hopkins in the late 19th century—and how the benefits of that shift and the later emergence of the compact between research universities and the federal government have been integral to the nation's success and prosperity.

03:01
תפריט כתבה
Phys

This satellite constellation transformed earth science by creatively tuning in to GPS signals‎

When NASA's Cyclone Global Navigation Satellite System, or CYGNSS, launched into orbit in 2016, none of the University of Michigan Engineering researchers who developed the system expected it to transform earth science. They certainly had high hopes for the system's original mission to improve hurricane forecasting, but its ability to pick up reflected GPS signals also proved useful for much more.

02:42
תפריט כתבה
Phys

Nanozymes map nanoparticle routes inside live cells without genetic engineering‎

Nanoparticles are widely used in medicine to deliver drugs, genes or imaging agents to specific parts of the body. Once a nanoparticle reaches a cell, however, many things can happen—it can reach its target, be degraded, interact with proteins that help transport it, or interact with proteins that hinder its transport.

02:42
תפריט כתבה
Phys

Simulation reveals how glaciers transported rocks across the Alps 24,000 years ago‎

Many of the boulders scattered across the Swiss landscape did not originate where they now stand. Instead, they were carried by ice nearly 24,000 years ago. For the first time, researchers at the University of Lausanne (UNIL) have reconstructed the journeys of these giant rocks across the entire Alpine region using a simulation. The model makes it possible to visualize the paths taken by millions of rocks that helped shape today's landscapes.

02:22
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