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61 articles from PhysOrg

Through the looking glass: Unravelling how ions move in phosphate glass

Phosphate glass is a versatile compound that has generated interest for its use in fuel cells and as biomaterials for supplying therapeutic ions. P2O5—the compound that forms the structural network of phosphate glass—is made up of phosphorus, an element that can adopt many different bonding configurations in combination with oxygen.

Greeks battle to protect town from ferocious blaze

Volunteers and firefighters were working relentlessly Tuesday, often without masks or helmets, in a desperate bid to stop a violent blaze from reaching a key town on Greece's Evia island, one of hundreds of fires that have raged through the country.

'Frameshifting' therapy for mast cell cancers reduces size, spread

A potential new treatment for mast cell cancers reduces the number of mast cells by "mutating" the messenger RNA (mRNA) before it can deliver instructions for manufacturing the gene responsible for cell proliferation. The method, known as frameshifting, changes the pre-mRNA so that the mature mRNA is degraded and any protein produced from its instructions is altered and inert. In a mouse model,...

Deviant actions of others can spur individuals to opt out of offending, study finds

Researchers who study crime are increasingly recognizing that context matters—that is, that actions, including crime, are shaped by the people and settings in which individuals offend. A new study examined whether others' deviant actions prompted individuals to opt out of offending or reverse their intentions to offend based on the size of the offending group. The study identified opt-out...

How does a flood become a disaster?

What are the causes, patterns and effects of disastrous river flood? An international group of researchers led by GFZ hydrologist Bruno Merz has investigated this question in a review article published in the journal Nature Reviews Earth and Environment. The short answer: It's complicated. What is certain, however, is that there is an opposing trend of property damage and personal injury. Since...

Insidious coral killer invading Palmyra Atoll reef

The reefs at Palmyra Atoll, a small outlying atoll in the equatorial Pacific Ocean, have been undergoing a shift from stony corals to systems dominated by corallimorphs, marine invertebrates that share traits with both anemones and hard corals. A published study in Coral Reefs led by University of Hawaiʻi at Mānoa marine biology researchers has discovered that although the invading corallimorph...

The surprising red light vision of rodents

It is commonly thought that rodents are functionally blind when their surroundings are illuminated with light of longer wavelengths, which humans perceive as red. A new study, published in eLife by Nader Nikbakht of the Massachusetts Institute of Technology and Mathew Diamond of SISSA—Scuola Internazionale Superiore di Studi Avanzati—challenges this assumption and shows that rats can...

Neutralizing the SARS-CoV-2 sugar coat

Researchers have identified two sugar-binding proteins that impede the viral entry of circulating SARS-CoV-2 variants. The team, spearheaded by researchers at IMBA—Institute of Molecular Biotechnology of the Austrian Academy of Sciences—may have found the "Achilles' heel" of the virus, with potential for pan-variant therapeutic interventions. The findings are now published in the EMBO Journal.

Black offenders more likely than white offenders to be eligible for life sentences, study finds

Life imprisonment without the possibility of parole is one of the most distinctive and least studied aspects of the U.S. criminal justice system. A new study analyzed seven years of federal sentencing data to investigate the associations between life sentences in federal courts and race/ethnicity. The study found that Black and Hispanic offenders were more likely to be eligible for life sentences...

Machine learning discovers new sequences to boost drug delivery

Duchenne muscular dystrophy (DMD), a rare genetic disease usually diagnosed in young boys, gradually weakens muscles across the body until the heart or lungs fail. Symptoms often show up by age 5; as the disease progresses, patients lose the ability to walk around age 12. Today, the average life expectancy for DMD patients hovers around 26.

Dragonfly mission to Titan announces big science goals

Among our solar system's many moons, Saturn's Titan stands out—it's the only moon with a substantial atmosphere and liquid on the surface. It even has a weather system like Earth's, though it rains methane instead of water. Might it also host some kind of life?

Shark diversity unaffected when the dinosaurs were wiped out

A global catastrophe 66 million years ago led to the extinction of all non-avian dinosaurs, and large marine reptiles like mosasaurs and plesiosaurs. But what happened to the sharks? According to a study of sharks' teeth publishing August 10th in the open-access journal PLOS Biology by Mohamad Bazzi of Uppsala University and colleagues, shark-tooth diversity remained relatively constant across the...

Pandemic prompts changes in how future teachers are trained

Before last year, a one-credit technology course for students pursuing master's degrees in education at the University of Washington wasn't seen as the program's most relevant. Then COVID-19 hit, schools plunged into remote learning, and suddenly material from that course was being infused into others.

Metamaterials research challenges fundamental limits in photonics

Cornell researchers are proposing a new way to modulate both the absorptive and the refractive qualities of metamaterials in real time, and their findings open intriguing new opportunities to control, in time and space, the propagation and scattering of waves for applications in various areas of wave physics and engineering.

Over 160,000 miles of rivers are at risk of losing their free-flowing status due to dams

A new study published in the journal Global Sustainability finds for the first time that over 160,000 miles of rivers are at risk of losing their free-flowing status due to the proposed construction of new hydropower dams. The total stretch of free-flowing rivers at risk is longer than six times the distance around the Earth. Iconic rivers such as the Amazon, Congo, and Salween are among those...

New evidence of geologically-recent Venusian volcanism

New data analysis techniques allow evidence of recent volcanism to be found in old Magellan spacecraft data. It is unclear if this activity is occurring today, or if it occurred within tens of million years, but geologically speaking, either case is recent. This adds to the growing body of evidence that volcanoes on Venus didn't go extinct as long ago as many had thought. This work was conducted...

Politicians in areas with most climate risk tweet about it least

Politicians are more likely to tweet about climate change if they are Democrats, represent wealthier districts and if their constituents are concerned about the climate, according to a new Cornell study. Meanwhile, communities most at risk from climate change are less likely to see their political leaders tweet about it, the multidisciplinary team of researchers said.

Movement of small water droplets controlled by means of a magnet

Droplet manipulation is kindling great interest in several fields, including technological applications and basic studies in dynamic systems. The Lab-on-a-chip and microfluidics community is particularly interested in the precise manipulation of small volumes of fluids, droplet microfluidics. A piece of research conducted by the UPV/EHU's Microfluidics Cluster  has found that a superparamagnetic...

How to stick sensors to skin without adhesive

Imagine if you could attach something to your skin without needing glue. A biosensor, a watch, a communications device, a fashion accessory—the possibilities are endless. Thanks to a discovery at Binghamton University, State University of New York, that time could be closer than you think.