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כתבות אחרונות מאתר 'Phys'
Phys

Simple synthetic strategy converts blue-emissive molecules into multicolor luminescent materials‎

Chemistry involves the fundamental interplay between the structures and properties of molecules. Notably, subtle changes in molecular structure and crystal packing can be amplified into macroscopic phenomena such as optical responses. Zn(II) is an earth-abundant and low-toxicity metal, and paddlewheel-type Zn(II) dimers are well-established structural motifs. They are traditionally regarded as electronically silent structural units. Recently, a study hypothesized that combining this flexible metal-carboxylate scaffold with π-extended emissive ligands and aromatic fluorination could unlock new, adaptive excited-state behavior under external stimuli.

02:27
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Phys

AI model 'reads' protein pairs, unlocking new insights into disease and drug discovery‎

Researchers have developed a new artificial intelligence (AI) model that can more accurately predict how proteins interact with one another—an advancement that could accelerate drug discovery and deepen insights into diseases such as cancer.

02:27
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Phys

Archaeological mission in Oxyrhynchus has found Homer's 'Iliad' inside a Roman-era mummy‎

The Oxyrhynchus Archaeological Mission, run by the Institute of Ancient Near East Studies (IPOA) at the University of Barcelona and led by Maite Mascort and Esther Pons, has identified a papyrus containing a fragment of Homer's "Iliad" inside a Roman-era tomb dating to approximately 1,600 years ago, in the Egyptian town of Al Bahnasa, ancient Oxyrhynchus. The discovery is exceptional: it is the first time in the history of archaeology that a Greek literary text has been found deliberately incorporated into the mummification process.

02:14
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Phys

What makes Mars' magnetotail flap? Two spacecraft point to magnetic reconnection‎

The sun continuously blasts charged, magnetic field-carrying particles, or plasma, in all directions. This solar wind interacts with the magnetic fields and atmospheres of several of our solar system's planets and other bodies, sculpting long magnetic tails of charged particles—magnetotails—that stretch into space behind them.

02:01
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Phys

E-commerce warehouse data offers insight into worker behavior‎

In an e-commerce warehouse, worker performance is influenced by the performance of those around them, despite a system that discourages interaction, according to research from Caitlin Ray, ILR assistant professor in the Human Resource Studies Department.

02:01
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Phys

Alkaline cement tiles boost baby coral survival from 12% to 52%‎

As coral reefs struggle to survive in warming oceans, scientists across the world are scrambling to find ways to help these vital ocean ecosystems. An interdisciplinary team at the University of Miami has discovered a new way to help lab-grown baby corals survive through the often-difficult early life stage. By growing these tiny baby corals on cement tiles formulated with sodium carbonate, which raises the alkalinity of the water, the team was able to show that young mountainous star corals are able to survive much better than the average lab-grown corals. Because survivorship among these young corals is often challenging, the technique could prove useful for coral restoration efforts across the globe.

01:55
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Phys

Could the mathematical 'shape' of the universe solve the cosmological constant problem?‎

The cosmological constant is the mathematical description of the energy that drives the ever-accelerating expansion of the cosmos. It's also the source of one of the most enduring and confounding problems in modern physics.

01:41
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Phys

Editing grapevine DNA could boost resistance to disease and drought‎

For the first time, a team of researchers from Stellenbosch University (SU) and the Agricultural Research Council has successfully edited the DNA of a woody crop plant in Africa by making precise changes to its genetic material. This is a major milestone for plant biotechnology on the continent. Using CRISPR technology—a tool that enables scientists to cut and edit DNA at very specific points—the researchers switched off a single gene (VvDMR6.1) in grapevine plants. This gene is linked to how plants respond to disease. The researchers say that this change made the plants less vulnerable to downy mildew, a major disease that affects vineyards around the world.

01:41
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Phys

Cracking a long-standing problem in high-entropy alloy nanoparticle synthesis‎

Composed of five or more elements in nearly equal amounts, high-entropy alloys (HEAs) have emerged as promising catalysts due to their compositionally complex surfaces that can accelerate chemical reactions. Until now, scientists have not been able to precisely engineer these surface structures at the nanoscale, making it difficult to study how particle shape influences catalytic performance. Now, a study led by Northwestern University professors Chad A. Mirkin and Christopher M. Wolverton has solved that problem. The research is published in the Journal of the American Chemical Society.

01:31
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Phys

Simple mineral treatment rescues flaxseed oil, slashing bitterness and keeping omega-3-rich flavor intact‎

How can the mild flavor of flaxseed oil be preserved for longer? A research team led by Roman Lang from the Leibniz Institute for Food Systems Biology at the Technical University of Munich has investigated this question. As the team demonstrates in its study, natural precursors of bitter-tasting compounds can be gently removed from the oil using bleaching earth (magnesium-aluminum silicate).

01:27
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