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כתבות אחרונות מאתר 'Phys'
Phys

Mirror image pheromones help beetles 'swipe right' to find mates‎

There are many ways to communicate with prospective romantic partners. If you are a Japanese scarab beetle, it's a matter of distinguishing left from right. New work from U.S. and Chinese scientists, published this week in Proceedings of the National Academy of Sciences, shows how these beetles use mirror-image pheromones to find a mate. The work could lead to better monitoring and control of significant agricultural pests.

16:30
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Phys

Earliest evidence of indigo-dyed textiles and single-needle knitting discovered in Bronze Age Anatolia‎

A research team led by Assoc. Prof. Dr. Çiğdem Maner from Koç University's Department of Archaeology and History of Art has uncovered remarkable textile fragments at Beycesultan Höyük that rewrite our understanding of Bronze Age craftsmanship in Anatolia. Published in the journal Antiquity, the study presents the earliest evidence of indigo-dyed textiles and a sophisticated single-needle knitting technique previously unknown in the region.

16:30
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Phys

Saturday Citations: A virus that makes its own proteins; a new Spinosaurus; exercise beats anxiety‎

This week in the scientific process: researchers reported the first-ever shark sighted in Antarctic waters. Penguins beware! Biologists report that honey bees navigate more precisely than previously thought. And not all humans scare wildlife, it turns out.

16:30
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Phys

Q&A: Gas fermentation could be game changer for the circular economy‎

Central goals of the circular economy include closing material cycles, reducing waste, and permanently keeping raw materials in the economic system. Achieving this requires innovative technologies that open up new avenues for recycling. Gas fermentation is a promising technology; however, some aspects are still in the research phase. The biotechnological process uses exhaust gases such as carbon dioxide as feedstocks to produce valuable products and enable a new approach to industrial emissions.

16:30
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Phys

New microscopy technique lets scientists see cells in unprecedented detail and color‎

Scientists have developed a new imaging technique that uses a novel contrast mechanism in bioimaging to merge the strengths of two powerful microscopy methods, allowing researchers to see both the intricate architecture of cells and the specific locations of proteins—all in vivid color and at nanometer resolution.

15:05
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Phys

How your body senses cold—and why menthol feels cool‎

When you step outside on a winter morning or pop a mint into your mouth, a tiny molecular sensor in your body springs into action, alerting your brain to the sensation of cold. Scientists have now captured the first detailed images of this sensor at work, revealing exactly how it detects both actual cold and the perceived cool of menthol, a compound derived from mint plants.

15:05
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Phys

Sometimes less is more: Messier nanoparticles may actually deliver drugs more effectively than tightly packed ones‎

The tiny fatty capsules that deliver COVID-19 mRNA vaccines into billions of arms may work better when they're a little disorganized. That's the surprising finding from researchers who developed a new way to examine these drug-delivery vehicles one particle at a time—revealing that cramming in more medicine doesn't always mean better results.

15:05
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Phys

A low-cost microscope to study living cells in zero gravity‎

As space agencies prepare for human missions to the moon and Mars, scientists need to understand how the absence of gravity affects living cells. Now, a team of researchers has built a rugged, affordable microscope that can image cells in real time during the chaotic conditions of zero-gravity flight—and they're making the design available to the broader scientific community.

15:05
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Phys

How tuberculosis bacteria use a 'stealth' mechanism to evade the immune system‎

Scientists have uncovered an elegant biophysical trick that tuberculosis-causing bacteria use to survive inside human cells, a discovery that could lead to new strategies for fighting one of the world's deadliest infectious diseases.

15:05
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Phys

A hidden reason inner ear cells die—and what it means for preventing hearing loss‎

Proteins long known to be essential for hearing have been hiding a talent: they also act as gatekeepers that shuffle fatty molecules across cell membranes. When this newly discovered function goes haywire—due to genetic mutations, noise-induced damage, or certain medications—it may be what kills the delicate sensory cells in our ears, causing permanent hearing loss.

15:05
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