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כתבות אחרונות מאתר 'Phys'
Phys

Synchronized infrared lasers control molecular shape changes and expose hidden fingerprints‎

Researchers from the Molecular Physics and Physical Chemistry departments of the Fritz Haber Institute have shown how two highly synchronized infrared (IR) laser beams can control molecules as they switch between different structural conformations. Their study provides a new window into how molecules rearrange themselves during chemical reactions, offering fundamental insights into the microscopic processes that govern chemistry.

01:12
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Phys

Modern life may be outpacing the human mind‎

The human brain evolved for a world of familiar faces, immediate threats and small social groups. But the world around us is changing far faster than human biology can keep pace. That mismatch may help explain some of the stress, loneliness and constant comparison people experience today.

01:04
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Phys

Could 'Trojan horse'-type microorganisms that exploit symbiotic systems be candidates for new biological pesticides?‎

Researchers at National Institute of Advanced Industrial Science and Technology (AIST), in collaboration with researchers from The University of Electro-Communications (UEC) and Akita Prefectural University, have discovered a new insect pathogen that invades the gut symbiotic organ of stink bugs by mimicking their symbiotic microorganism, ultimately killing the host bugs.

01:04
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Phys

Purine-heavy DNA sequences protect Bacillus subtilis genes from Rho termination‎

In the study of bacteria, a longstanding dogma has held that two molecular machines—RNA polymerase, which leads the way in transcribing DNA into RNA, and ribosomes, which bring up the rear translating RNA into proteins—worked so closely in tandem that they were effectively attached. This close coupling of transcription and translation in bacteria was thought to be fundamental to gene expression, in part because the trailing ribosome could shield nascent gene products from an effective and omnipresent quality-control protein called Rho.

00:51
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Phys

Brown leaves before fall could signal lasting heat damage, researchers warn‎

Due to increasing heat and drought, forests are turning brown more often before autumn, when leaf senescence normally occurs. It is often unclear whether the trees are actively shedding foliage to avoid a breakdown in water transport or whether browning leaves are a consequence of irreversible damage caused by both heat and drought. As a result, the resilience of forests to climate extremes could be overestimated, WSL researchers warn in a recent commentary.

00:43
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Phys

World Cup data reveals initiative alone doesn't improve team performance‎

Team members' initiative can help teams succeed, but only when it is paired with strong coordination, according to new research from Washington State University.

00:43
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Phys

Compromise drives shared risky decisions, but biased blame and credit can break teamwork‎

Relationships are all about compromise. From deciding on where to eat dinner with a friend to negotiating chore lists at home, we often experience situations that require some flexibility. But what happens when we must work with others—especially people we don't know—to make a risky decision? That's what Caltech's Dean Mobbs, professor of cognitive neuroscience, and members of his lab set out to explore in a recent study.

00:31
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Phys

Seaweeds are not plants, and six other surprising facts about aquatic flora‎

Hidden beneath the water's surface is a botanical world that is among nature's most innovative and ecologically important.

00:24
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Phys

Diffractive networks enable optical information transfer through random and unknown diffusers‎

The transmission of optical information through random scattering media is a major challenge in optics, biomedical imaging, telecommunications and remote sensing. When light passes through a turbid or diffusive medium, such as biological tissue or a randomly structured optical material, the original image information can be severely distorted, making reliable recovery difficult.

00:24
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Phys

Orbitronics clears key hurdle with direct orbital currents, boosting signals 100-fold‎

Researchers at Johannes Gutenberg University Mainz (JGU) are the first to directly utilize orbital currents without the need for conversion of the orbital current into a spin current.

00:13
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