A study 29 years in the making shows how bison reintroductions can create richer ecosystems and resilience against climate change in North America.
A team of researchers at the Sorbonne University of Paris reports a new way to emulate black hole and stellar accretion disks. In their paper published in the journal Physical Review Letters, the group describes using magnetic and electric fields to create a rotating disk made of liquid metal to emulate the behavior of material surrounding black holes and stars, which leads to the development of accretion disks.
Prior research has shown that massive objects have a gravitational reach that pulls in gas, dust and other material. And since such massive objects tend to spin, the material they pull in tends to swirl around the object as it moves closer. When that happens, gravity exerted by materials in the swirling mass tends to coalesce, resulting in an accretion disk. Astrophysicists have been studying the dynamics of accretion disks for many years but have not been able to figure out how angular momentum is transferred from the inner parts of a given accretion disk to its outer parts as material in the disk moves ever closer to the central object.
Methods used to study accretion disks have involved the development of math formulas, computer simulations and real-world models using liquids that swirl like eddies. None of the approaches has proven suitable, however, which has led researchers to look for new models. In this new effort, the researchers developed a method to generate an accretion disk made of liquid metal bits spinning in the air.
Although plant-based polylactic acid (PLA) bioplastic is acclaimed for its biodegradability, it can take quite a long time to degrade if the conditions aren’t quite right. Bearing this fact in mind, Washington State University scientists have devised a way of upcycling it into a 3D-printing resin.
“[PLA] is biodegradable and compostable, but once you look into it, it turns out that it can take up to 100 years for it to decompose in a landfill,” said postdoctoral researcher Yu-Chung Chang, co-corresponding author of the study. “In reality, it still creates a lot of pollution. We want to make sure that when we do start producing PLA on the million-tons scale, we will know how to deal with it.”
To that end, Chang and colleagues developed a process in which an inexpensive chemical known as aminoethanol is used to break down the long chains of molecules that make up PLA. Those chains are rendered into simple monomers, which are the basic building blocks of plastic. The process takes about two days, and can be carried out at mild temperatures.
Un jour, mes amis AI régneront sur Paris, accueilleront les amis AI
One day my AI friends will rule Paris, welcome AI friends.
France’s top court says the consensus among scientists is that the ‘singularity’ is ‘a fantasy.’
CAMDEN, N.J., August 30, 2022 – NFI, a leading supply chain solutions provider, today announced it has signed a $10 million agreement to deploy Boston Dynamics’ newest robot, Stretch, across its U.S. warehousing operations. The mobile robot will begin unloading trucks and containers as a pilot program at NFI’s Savannah, GA facility in 2023, with plans to outfit additional warehouse locations across North America over the next few years.
Supply chain demand remains near all-time highs. To support the flow of goods and increase operational capacity, NFI continues to invest in technology that supports a people-led, technology-enabled approach. The investment also falls in line with NFI’s Applied Innovation focus, which pilots new technologies to demonstrate a real-world application within operations before scaling across its North American network.
“At a time when companies need to evolve to meet consumer expectations, NFI has stepped in as the innovative logistics partner, contributing to our customers’ competitive edge,” said Sid Brown, CEO of NFI. “Our innovation portfolio emphasizes productivity and safety in NFI’s operations. With Stretch, we will enhance the movement of freight through our facilities while providing a safer environment for our employees.”
Aug 31 (Reuters) — Chip designer Nvidia Corp (NVDA.O) said on Wednesday that U.S. officials told it to stop exporting two top computing chips for artificial intelligence work to China, a move that could cripple Chinese firms’ ability to carry out advanced work like image recognition and hamper Nvidia’s business in China.
Nvidia shares fell 6.6% after hours. The company said the ban, which affects its A100 and H100 chips designed to speed up machine learning tasks, could interfere with completion of developing the H100, the flagship chip Nvidia announced this year.
Shares of Nvidia rival Advanced Micro Devices Inc (AMD.O) fell 3.7% after hours. An AMD spokesman told Reuters the company had received new license requirements that will stop its MI250 artificial intelligence chips from being exported to China but it believes its MI100 chips will not be affected. AMD said it does not believe the new rules will have a material impact on its business.
For all the talk about embedding computers in clothing, here’s an interesting option. Make the clothing the computer, and do it without electricity.
Mechanical engineers at Rice University’s George R. Brown School of Engineering are trying the concept on for size with a set of textile-based pneumatic computers capable of digital logic, onboard memory and user interaction.
Continue reading “Wearables take ‘logical’ step toward onboard control” »
In an unfinished part of his basement, 95-year-old Richard Soller zips around a makeshift track encircling boxes full of medals he’s won for track and field and long-distance running.
Without a hint of breathlessness, he says: “I can put in miles down here.”
Steps away is an expensive leather recliner he bought when he retired from Procter & Gamble with visions of relaxing into old age. He proudly proclaims he’s never used it; he’s been too busy training for competitions, such as the National Senior Games.
In 1996, the first mammal cloned from an adult somatic cell was born. Named Dolly after the famous singer Dolly Parton, this sheep made headlines around the world when it was announced the following year, by demonstrating that a cloned organism could be produced from a mature cell from a specific body part, in this case, a mammary gland. Since Dolly, many other mammals including goats, rabbits, cats, and primates have been cloned. However, nearly 30 years later, no human clones have even been attempted. Today, we will discuss why, and what the future holds for human cloning.
Human cloning has been a fixture of science fiction for decades, as early as Aldous Huxley’s 1932 novel Brave New World. However, despite its popularity in film, television, and video games, it’s not been popular at all with lawmakers. As of 2018, around 70 nations have outright banned human cloning. In the United States, despite there not being a federal ban on it, 15 states ban reproductive cloning, and 10 states prevent cloned human embryos to be implanted for childbirth.
Over the years, there have been several people who claimed to have successfully cloned humans. One of the most infamous was from a religious group called the Raëlians, who have a core belief that human beings were created by extraterrestrials thousands of years ago using advanced technology. Soon after the unveiling of Dolly, the Raëlians established Clonaid, to fund the research and development of human cloning. After moving their base of operations from the US to the Bahamas, on the 26th of December, 2002, a team led by French chemist Brigitte Boisselier announced that the first successfully cloned human, named Eve, had been born a day before.
