Was born in Tambov, about 500 kilometers southeast of Moscow, in 1903. His unmarried mother, Maria Yakovlevna Kolmogorov a, died giving birth to him. [ 8 ] Andrey was raised by two of his aunts in Tunoshna (near Yaroslavl) at the estate of his grandfather, a well-to-do nobleman.
Researchers discovered new quantum states in twisted graphene layers, paving the way for energy-efficient electronics and quantum computing.
How does a tech-guru billionaire anti-gravity developer wind up in jail headed to prison?
A new paper in Nature Physics shows that by cramming lots of rare-earth ions into a crystal, some will form pairs that act as highly coherent qubits, thus debunking the idea that solid-state qubits need to be super dilute in an ultra-clean material to achieve long lifetimes.
According to the study’s authors, one of the major barriers to practical quantum computing has been how to make qubits that retain their quantum information long enough to be useful.
“We’ve found that Enceladus’ ocean should behave like oil and water in a jar, with layers that resist vertical mixing,” said Flynn Ames.
Could finding life in alien oceans be harder than previously thought? This is what a recent study published in Communications Earth & Environment hopes to address as a team of researchers from the United Kingdom investigated how life that might exist in the depths of alien oceans like Saturn’s moon, Enceladus, could take time to reach the surface for sampling, which could potentially pose problems for future sample return missions to these intriguing worlds.
For the study, the researchers used a series of computer models to simulate the various layers that could exist between the liquid ocean of Enceladus and the plumes that discharge from its south polar regions, nicknamed “tiger stripes” for its giant ice cracks. Given the sampling potential of the plumes, especially with NASA’s Cassini spacecraft having flown through the plumes during its mission, the researchers wanted to ascertain the length of time material from potential hydrothermal vents at the bottom of the ocean would reach the surface to be discharged by the plumes and sampled for signs of life. In the end, the researchers found that material from the bottom of Enceladus’ would take several centuries to reach a plausible depth to be discharged by the plumes.
A joint research team from the LKS Faculty of Medicine (HKUMed) and the Faculty of Science at the University of Hong Kong has uncovered an unexpected interaction between chemotherapeutic agents and a crucial efficacy marker.
We’ve yet to see a falling piece of space debris strike an airplane, but if it happens, the consequences would almost certainly be catastrophic – and according to a new study, the danger posed to planes is only rising.
The researchers behind the study, from the University of British Columbia in Canada, looked at worldwide flight data to model the distribution of planes in the sky, then compared this to records of uncontrolled rocket body reentries.
The increasing risk is also being driven in part by the mass deployment of satellites, like SpaceX’s Starlink, which will eventually reenter our airspace.
Extreme precipitation events in Antarctica, which are mostly dominated by snowfall due to sub-zero temperatures, also include rainfall, according to new research.
BAS scientists studying atmospheric rivers—narrow bands of concentrated moisture in the atmosphere or “rivers in the sky”—have discovered that these phenomena bring not only snow but also rain to parts of Antarctica, even during the continent’s cold winter months. The results are published in the journal The Cryosphere.
Using cutting-edge regional climate models (RCMs) at a high spatial resolution of just one kilometer, the researchers explored how atmospheric rivers interact with Antarctica’s rugged terrain to deliver significant precipitation to key areas, including the Thwaites and Pine Island Ice Shelves in West Antarctica. These are areas known for their ongoing retreat and contribution to global sea-level rise.
Researchers successfully generated the first image of the inside of scroll PHerc. 172.
Sylvain Lesné, a neuroscientist accused of image manipulation in a seminal Alzheimer’s disease paper in, resigned last week from his tenured professorship at the University of Minnesota Twin Cities (UMN). The move follows a 2.5-year investigation in which the university found problems with several other papers on which Lesné is an author. The study has already been pulled, but the school has asked that four more of Lesné’s papers be retracted.
The resignation, effective 1 March, was first reported by the. Lesné did not respond to a request for comment. UMN spokesperson Jake Ricker said, “The university has identified data integrity concerns impacting several publications and has been in touch with those journals to recommend retraction of the publications, where appropriate.”
As a postdoc, Lesné worked in the lab of neuroscientist Karen Ashe. In 2006, they published a study in that seemed to show a cause-effect relationship between a protein—amyloid-beta *56—and memory loss in rats. Those symptoms seemed to resemble the memory problems that afflict Alzheimer’s patients.
