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כתבות אחרונות מאתר 'Phys'
Phys

Quantum handshake: How orbital overlap dictates molecular conductance‎

By placing single-atom-thick adlayers of p-block metals on commonly employed gold electrodes (d-block), a research team at National Taiwan University has successfully quantified the "interfacial hopping integral" between molecules and electrodes. This new model establishes a universal descriptor to predict conductance trends in single-molecule junctions, resolving long-standing variations in molecular measurements.

14:52
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Phys

Microbial clues uncover how wild songbirds respond to stress‎

Every animal carries a microscopic community of bacteria, fungi, and other microbes that play a critical role in health. These gut microbes help regulate the immune system, support digestion, and even influence how animals respond to stress. In birds, stress triggers the hormone corticosterone, which helps individuals cope with challenges. But when stress is prolonged or repeated, it can disrupt the balance of microbes in the gut, potentially affecting health in ways that aren't immediately visible.

13:21
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Phys

From plastics to pharmaceuticals, a new discovery sparks chain reactions‎

After years of research, international experts have confirmed the discovery of a new chemical reaction, launching new opportunities for rapid advances in a range of fields—from recycled plastics to pharmaceuticals. In the article, "Spontaneous Trisulfide Metathesis in Polar Aprotic Solvents" in Nature Chemistry, the interdisciplinary team explore how sulfur-sulfur bonds can be formed and broken rapidly and cleanly at room temperature, opening new avenues for drug development, biotech and protein science, and chemical and material science.

13:21
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Phys

A pathway to achieve high well-being and a safe climate without relying on GDP growth‎

Governments' attempts to achieve climate goals are falling short, in large part because wealthy economies are continuing to pursue economic growth. As these economies ramp up production and consumption, they make climate mitigation more difficult to achieve. As a result, the Paris Agreement is slipping out of reach, putting nature and human societies in jeopardy.

13:21
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Phys

US weather to go nuts with blizzard, polar vortex, heat dome, atmospheric river all at once‎

Nearly every part of the United States is getting walloped by wild weather or just about to be.

11:50
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Phys

A race against time to save Alpine ice cores that record medieval mining, fires, and volcanoes‎

Ice cores taken from glaciers reveal the air pollution of the past, using atmospheric particles incorporated in snow that fell on the glacier and became ice. Now, scientists have extracted a record of thousands of years' worth of air pollution from 9.5 meters of ice at the Weißseespitze glacier, close to the border between Austria and Italy. But this ice is under threat from global warming, and scientists warn that it is now a race against time to capture critical climate information locked in these glaciers before it's gone forever.

07:18
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