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כתבות אחרונות מאתר 'Phys'
Phys

New approach to cleaning the inner walls of a fusion system removes another obstacle to near-endless energy‎

Fusion systems need inner walls that can withstand extreme heat. One promising solution uses liquid lithium to protect the walls, held like water in a sponge made of the exceptionally strong metal tungsten. An advanced manufacturing process can be used to make tungsten into sponge-like wall tiles with lots of pores for flowing liquid lithium. But this process also leaves the tungsten contaminated with other materials, such as carbon, oxygen or nitrogen.

17:46
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Phys

How the 'fecal revolution' changed Earth's ecosystems‎

An international study led by Flinders University has found a fertile area of inspiration to explain an important step in evolution—and it's a whole lot of poop. The new study describes the "fecal revolution" to explain a crucial turning point in animal and environmental evolution on Earth.

17:34
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Phys

Q&A: Gen Z puts high priority on jobs with meaning, purpose, but sees daunting hurdles‎

Among Gen Z, 79% want a job mainly focused on helping people or making a positive difference in others' lives. But only about half of workers ages 18–29 who want such a position say they have one.

17:24
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Phys

What makes us happy?‎

Maybe to some degree. But a new international study suggests the communities we live in matter a whole lot, too. Researchers analyzed responses from 97,220 people across 66 countries and identified five broad factors associated with happier societies.

17:07
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Phys

Repetitive genomic regions link structural genomic variation to species diversity‎

Researchers sequenced the genomes of three medaka, or Japanese rice fish, a common model organism used in biological research, nearly 10 and 20 years ago. While sequencing the genomes was relatively straightforward, assembling them was anything but.

16:47
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Phys

Magnetic dopants help quantum dots use light for chemical reactions‎

Scientists at Los Alamos National Laboratory have demonstrated a new quantum-dot mechanism that could significantly expand the reach of light-driven chemistry. By introducing magnetic manganese dopants into semiconductor quantum dots, the team created an ultrafast spin-exchange pathway that captures hot-electron energy before it is lost as heat and uses it to drive chemical reduction.

16:47
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Phys

Iron and cobalt both curb stainless invar expansion, but iron leads‎

Invar alloys resist expanding or contracting with temperature, a property valuable for precision instruments, but it has been unclear how this "invar effect" plays out separately in each element of complex, multimetal stainless invar alloys.

16:25
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Phys

Fire department leaders drive crew fitness, study finds‎

For firefighters, physical fitness is a matter of safety, survival and long-term health. While past research has largely focused on individual habits, a new study has revealed that station leaders play a critical role in shaping firefighters' physical readiness.

16:08
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Phys

Antibiotic-resistant seafood bacterium found in Vietnam fish farming waters near popular island destination‎

A bacterium linked to seafood-related illness and capable of resisting multiple antibiotics has been detected in fish-farming waters near Cat Ba Island, Vietnam, according to a new study highlighting the importance of monitoring antibiotic resistance in aquaculture environments.

15:53
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Phys

New membrane accelerates purification of industrial solvents‎

Researchers from the Department of Chemical Engineering, working with an international team led by KU Leuven, have developed a membrane technology to improve the efficiency of purifying widely used solvents.

15:53
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