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כתבות אחרונות מאתר 'Phys'
Phys

Python scales host microstructures that block bacterial biofilms—revealing potential for antimicrobial materials‎

Materials inspired by nature, or biomimetic materials, are nothing new. Scientists have designed water-resistant materials inspired by lotus leaves and rose petals, unsinkable metals based on the air-trapping, buoyant abilities of fire ants and diving bell spiders, and even Velcro was inspired by the sticky burrs from burdock plants. Now, a new study published in ACS Omega has taken a closer look at the biofilm-resistant abilities of python skin, which may have valuable applications in medical devices and industrial surfaces.

19:37
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Phys

Tracking Arctic freshwater flow from space‎

Arctic rivers wind through remote tundra and boreal forests, freezing solid in winter and surging each spring with snowmelt, eventually emptying into the ocean. Runoff—water that does not soak into the ground but instead flows over the land surface—further increases the volume of freshwater entering the sea.

19:37
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Phys

Urban blue tits use discarded cigarette butts to protect their nests, study suggests‎

Discarded litter not only makes our streets and neighborhoods look untidy, but it can also pose a significant risk to wildlife. However, in a surprising development, a study published in the journal Animal Behaviour reports that blue tits are lining their nests with cigarette butts, which may protect them from parasitic infections.

19:37
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Phys

The evolutionary secret of the California poppy's alkaloids‎

Characteristic features of plants, such as their active ingredients or flower color, may have developed through very different evolutionary histories. This is shown by an international study on the orange-flowering California poppy led by researchers at Justus Liebig University Giessen (JLU). The multidisciplinary research team compared the biosynthesis of alkaloids and carotenoids as well as flower control factors of this plant at the genetic level.

19:37
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Phys

How dolphins communicate: New discoveries from a long‑term study in Sarasota, Florida‎

Human fascination with bottlenose dolphins goes back thousands of years, at least as early as Greek mythology.

19:37
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Phys

Decoding sugars one bond at a time—without labels‎

Researchers at National Taiwan University have developed a tip-enhanced Raman spectroscopy platform that can identify tiny structural differences in oligosaccharides without fluorescent labels. The method can distinguish glycosidic linkages, estimate chain length, and even follow glycan synthesis in real time.

19:37
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Phys

Striped mice survive harsh drought by slowing down and not getting stressed‎

For decades, ecologists lumped everything bad for animals under one word: stress. But what if animals don't experience harsh environments as stressful at all? What if it is the opposite?

19:37
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Phys

Mining a methane-degrading bioreactor for protein rubies‎

Scientists have found a new type of iron-storing protein in a mixture of microbes containing methane-degraders. This discovery underscores the importance of characterizing proteins from microbes that cannot be isolated, thereby enabling the discovery of new enzymes for future applications. The paper is published in the journal Communications Biology.

19:37
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Phys

Moby Dick 'ship sinking' sperm whales caught headbutting on camera‎

New research from the University of St Andrews reports sperm whales headbutting one another. The behavior was captured on film and described scientifically for the first time, confirming accounts by 19th century mariners of sperm whales using their heads to deliberately push and strike objects, occasionally even sinking ships, thereby inspiring Herman Melville's classic tale Moby Dick.

18:11
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Phys

Ancient 'syphilis-like' disease in Vietnam challenges long-held assumptions on congenital infection‎

The findings of a new study by a Charles Sturt University researcher and colleagues challenge a long-standing assumption used by scientists studying ancient disease. The study is published in the International Journal of Osteoarchaeology.

18:11
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