Toward Unification of Turbulence Framework – weak-to-strong transition discovered in turbulence

Photo : Siqi Zhao & Huirong Yan

Astrophysicists from the University of Potsdam have made a significant step toward solving the last puzzle in magnetohydrodynamic turbulence theory by observing the weak to strong transition in the space plasma turbulence surrounding Earth with newly developed multi-spacecraft analysis methods. Their pioneering discovery was published today in the journal Nature Astronomy.

Turbulence is ubiquitous in nature. It exists everywhere, from our daily lives to the distant universe, while being labelled as “the last great unsolved problem of classical physics” by Richard Feynman.

Prof. Dr...

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Scientists discover the Cellular Functions of a Family of Proteins Integral to Inflammatory diseases

Scientists discover the cellular functions of a family of proteins integral  to inflammatory diseases

In a scientific breakthrough, Mount Sinai researchers have revealed the biological mechanisms by which a family of proteins known as histone deacetylases (HDACs) activate immune system cells linked to inflammatory bowel disease (IBD) and other inflammatory diseases.

This discovery, reported in Proceedings of the National Academy of Sciences (PNAS), could potentially lead to the development of selective HDAC inhibitors designed to treat types of IBD such as ulcerative colitis and Crohn’s disease.

“Our understanding of the specific function of class II HDACs in different cell types has been limited, impeding development of therapies targeting this promising drug target family,” says senior author Ming-Ming Zhou, PhD, Dr...

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Holographic Displays offer a Glimpse into an Immersive Future

A figure wearing holographic displays glasses, a chip on the leg of the eyeglasses beaming colored light onto the inside of the lens of the glasses.

Researchers at Princeton and Meta have created a tiny optical device that makes holographic images larger and clearer. Small enough to fit on a pair of eyeglasses, the device could enable a new kind of immersive virtual reality display. Illustration by Liz Sabol, photo by Nathan Matsuda

Researchers have invented a new optical element that brings us one step closer to mixing the real and virtual worlds in an ordinary pair of eyeglasses using high-definition 3D holographic images.

Holographic images have real depth because they are three dimensional, whereas monitors merely simulate depth on a 2D screen. Because we see in three dimensions, holographic images could be integrated seamlessly into our normal view of the everyday world.

The result is a virtual and augmented reality disp...

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Lunar Landforms indicate Geologically Recent Seismic Activity on the Moon

Lunar landforms indicate geologically recent seismic activity on the Moon
Global random spatial age distribution (0–250 million years) of 34 lunar lobate scarps in this study. Credit: Credit: Earth and Planetary Science Letters (2024). DOI: 10.1016/j.epsl.2024.118636

The moon’s steadfast illumination of our night sky has been a source of wonder and inspiration for millennia. Since the first satellite images of its surface were taken in the 1960s, our understanding of Earth’s companion through time has developed immeasurably. A complex interplay of cosmic interactions and planetary systems, the moon’s surface displays a plethora of landforms evidencing its history.

One such feature is lunar lobate scarps, long (<10 km) curvilinear landforms resulting from thrust fault movement, where older rocks are pushed above younger units leading to crustal shorten...

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