ניווט נגישות
כתבות אחרונות מאתר 'Phys'
Phys

Neuron imaging captures unconventional receptor route that supports synaptic communication‎

All cells, whether big or small, short or long, rely on proteins to function properly. In most cells, transporting these proteins is relatively simple. Neurons in the brain, however, face a significant logistical challenge because their axons, the thread-like structures that carry electrical impulses, can extend for meters. As a result, essential materials produced in the cell body must travel enormous distances to reach the ends of axon terminals.

22:26
תפריט כתבה
Phys

A hidden threshold enables tunable control of liquid crystal helices for energy-efficient technologies‎

Liquid crystals are an integral part of modern technology, ranging from displays to advanced sensory systems. In a study published in Scientific Reports, researchers from the Institute of Experimental Physics of the Slovak Academy of Sciences (IEP SAS) in Košice, in collaboration with international partners, have demonstrated how minute changes in material composition can achieve precise control over behavior in electric and magnetic fields.

22:03
תפריט כתבה
Phys

Scientists identify hidden accelerant in Antarctic ice loss‎

For years, scientists have warned that melting Antarctic ice could push sea levels dangerously higher by the end of this century. But a new study led by University of Maryland scientist Madeleine Youngs suggests those warnings may still be too conservative because they leave out a crucial factor: the ocean's own complex circulatory system.

21:43
תפריט כתבה
Phys

Single-molecule RNA mapping may reveal how shape shifts steer health and disease‎

Researchers from A*STAR Genome Institute of Singapore (A*STAR GIS) have developed a new method to study individual RNA molecules and reveal how their structures influence gene regulation, a fundamental process that affects how cells function in health and disease. Their work was published in Nature Methods.

21:20
תפריט כתבה
Phys

Exploiting interfacial ionic mobility to make heat-moldable nanoparticle aggregates‎

If you have ever warped a cheap plastic cup by pouring coffee into it, then you have witnessed thermoplasticity in action. Thermoplasticity is the ability of a material to become pliable under heating. In industry, thermoplasticity is exploited to form materials into complex shapes using heat. However, some materials, such as aggregates of nanoparticles, are not thermoplastic and cannot be easily processed without affecting their particle morphology and properties.

21:07
תפריט כתבה
Phys

Fair matching systems can still produce unequal outcomes, new research finds‎

A computerized matching system can be designed to be fair and still produce unequal outcomes if the people using it do not understand how it works, according to new research published in Organization Science that shows that disparities can emerge even when a matching system is designed to reduce bias, discourage gaming and reward honest decision-making.

21:07
תפריט כתבה
Phys

Tropical rivers emerge as biggest oxygen-loss hotspots in a warming world‎

According to a study published in Science Advances on May 15, global rivers are undergoing widespread and sustained deoxygenation driven by climate warming, among which tropical rivers are the most vulnerable ecosystems, with an urgent need to combat oxygen loss.

21:07
תפריט כתבה
Phys

Sunlight-powered generation of correlated photon pairs‎

Pairs of correlated or entangled photons are a foundational resource in quantum optics. They are most commonly produced through spontaneous parametric down-conversion (SPDC), a nonlinear optical process that typically relies on a stable, coherent laser to pump a nonlinear crystal. Because of this requirement, SPDC has long been viewed as impractical without laboratory-grade laser systems.

20:47
תפריט כתבה
Phys

Climate warming causes bleaching in key Arctic lichen, study finds‎

Long-term climate warming is causing a bleaching effect in a key Arctic lichen species, according to new research led by researchers in the School of GeoSciences and British Antarctic Survey. Their study shows how rising temperatures are disrupting one of the Arctic's most important and widespread organisms, with potential consequences for fragile tundra ecosystems.

20:25
תפריט כתבה
Phys

Implantable bacteria can now be safely contained, clearing a major hurdle for fighting infection and cancer‎

Researchers have long known that bacteria could potentially be used to deliver therapeutic drugs inside the human body. However, safely and successfully carrying out such a feat in humans has been a challenge. But now, researchers from Harvard have made another step forward toward the goal of using microbes as medicine. Their recent study, published in Science, details a novel method for containing engineered bacteria to keep them from infecting their host while still successfully delivering potentially life-saving medications.

20:10
תפריט כתבה
דיווח על כתבה זו הסתרת כתבות מאתר זה המשך קריאה באתר המקור