Lifeboat Foundation

The strongest permanent magnets today contain a mix of the elements neodymium and iron. However, neodymium on its own does not behave like any known magnet, confounding researchers for more than half a century. Physicists at Radboud University and Uppsala University have shown that neodymium behaves like a so-called ‘self-induced spin glass,’ meaning that it is composed of a rippled sea of many tiny whirling magnets circulating at different speeds and constantly evolving over time. Understanding this new type of magnetic behavior refines our understanding of elements on the periodic table and eventually could pave the way for new materials for artificial intelligence. The results will be published in Science on May 29, 2020.

“In a jar of honey, you may think that the once clear areas that turned milky yellow have gone bad. But rather, the jar of honey starts to crystallize. That’s how you could perceive the ‘aging’ process in neodymium.” Alexander Khajetoorians, professor in Scanning probe microscopy, together with professor Mikhail Katsnelson and assistant professor Daniel Wegner, found that the material neodymium behaves in a complex magnetic way that no one ever saw before in an element on the periodic table.

Anyons – the particle-like collective excitations that can exist in some 2D materials – tend to bunch together in a two-dimensional conductor. This behaviour, which has now been observed by physicists at the Laboratory of Physics of the ENS (LPENS) and the Center for Nanoscience and Nanotechnologies (C2N) in Paris, France, is completely different to that of electrons, and experimental evidence for it is important both for fundamental physics and for the potential future development of devices based on these exotic quasiparticles.

The everyday three-dimensional world contains two types of elementary particles: fermions and bosons. Fermions, such as electrons, obey the Pauli exclusion principle, meaning that no two fermions can ever occupy the same quantum state. This tendency to flee from each other is at the heart of a wide range of phenomena, including the electronic structure of atoms, the stability of neutron stars and the difference between metals (which conduct electric current) and insulators (which don’t). Bosons such as photons, on the other hand, tend to bunch together – a gregarious behaviour that gives rise to superfluid and superconducting behaviours when many bosons exist in the same quantum state.

Within the framework of quantum mechanics, fermions also differ from bosons in that they have antisymmetric wavefunctions – meaning that a minus sign (that is, a phase φ equal to π) is introduced whenever two fermions are exchanged. Bosons, in contrast, have symmetric wavefunctions that remain the same when two bosons are exchanged (φ=0).

One of China’s largest agricultural drone companies is helping to overhaul the rice-farming industry.

XAG recently launched a rice-seeding demonstration of seeding via drone at Happy Farms, an agricultural park in Guangdong province.

Circa 2017 face_with_colon_three

For the first time, scientists have found a genetic mutation that appears to offer a measure of protection against some of the biological effects of ageing.

Continue reading “First Ever Anti-Ageing Gene Discovered in a Secluded Amish Family” »

Circa 2017

Electric car purchases have been on the rise lately, posting an estimated 60 percent growth rate last year. They’re poised for rapid adoption by 2022, when EVs are projected to cost the same as internal combustion cars. However, these estimates all presume the incumbent lithium-ion battery remains the go-to EV power source. So, when researchers this week at the University of Texas at Austin unveiled a new, promising lithium- or sodium–glass battery technology, it threatened to accelerate even rosy projections for battery-powered cars.

“I think we have the possibility of doing what we’ve been trying to do for the last 20 years,” says John Goodenough, coinventor of the now ubiquitous lithium-ion battery and emeritus professor at the Cockrell School of Engineering at the University of Texas, Austin. “That is, to get an electric car that will be competitive in cost and convenience with the internal combustion engine.” Goodenough added that this new battery technology could also store intermittent solar and wind power on the electric grid.

Continue reading “Will a New Glass Battery Accelerate the End of Oil?” »

Malformed spores suggest powerful storms drove ozone loss and led to sterilizing UV radiation.

When tuned up, old algorithms can match the abilities of their successors.

Since there is no treatment or vaccine for the novel coronavirus, or COVID-19 — the disease to which it leads — the only way to stop its spread is through social distancing and good hygiene. As such, long-term protective immunity could impact the overall course of the pandemic, the post-pandemic period and any subsequent waves. Until now, this concept has been a key component of the Health Ministry’s second wave strategy.

The Health Ministry recently revealed that it had purchased serological tests with the aim of surveying as many as 1 million people to determine how much of the public has been infected. Since around 80% of people who get the virus show little or no symptoms, they can carry and spread it without knowing.

However, “serology-based tests that measure previous infections for SARS‐CoV‐2 may have limited use if that infection has occurred more than one year prior to sampling,” the Amsterdam researchers explained.

NASA has estimated a 1-in-276 chance that the astronauts on the SpaceX rocket could die during the company’s first crewed mission.