Page 6618
May 3, 2021
Chip shortage highlights U.S. dependence on fragile supply chain
Posted by Genevieve Klien in categories: computing, futurism
Seventy-five percent of semiconductors, or microchips — the tiny operating brains in just about every modern device — are manufactured in Asia. Lesley Stahl talks with leading-edge chip manufacturers, TSMC and Intel, about the global chip shortage and the future of the industry.
May 3, 2021
EPA Moves To Cut A Group Of Powerful Greenhouse Gases
Posted by Jason Blain in category: futurism
The EPA’s new regulation would slash HFC production, import and use, beginning in 2022. The agency said its goal is to reduce HFC production and import by 85% over the next 15 years.
The EPA plans to phase out hydrofluorocarbons, or HFCs, which are used in refrigerators and air conditioners. When HFCs are released into the atmosphere, they are extremely good at trapping heat.
May 3, 2021
Bringing Classical Artwork To Life With Animation
Posted by Muhammad Furqan in category: computing
Can low-carb diets like Keto help you live longer? I spent way too much time reading research papers and the answer seems to be…maybe.
Affiliate Disclaimer: Longevity Advice is reader-supported. When you buy something using links on our site, we may earn a few bucks.
I love bacon.
May 3, 2021
Next Generation of Covid-19 Vaccines Could Be Pill or Spray
Posted by Quinn Sena in categories: biotech/medical, government
Drugmakers and government labs are developing doses easier to take and transport to tackle coronavirus variants and avert future pandemics.
WSJ Membership.
May 3, 2021
Scientists make a breakthrough in developing the quantum internet
Posted by Quinn Sena in categories: internet, quantum physics
Researchers say the new network will be unhackable and able to coordinate systems to unprecedented levels. Many of the deeper implications, however, cannot be foreseen.
May 3, 2021
West Africa is the Latest Testing Ground for US Military Artificial Intelligence
Posted by Saúl Morales Rodriguéz in categories: military, robotics/AI, terrorism
In its preparation for great power competition, the US military is modernizing its artificial intelligence and machine learning techniques and testing them in West Africa.
by Scott Timcke
May 3, 2021
Researchers discover the mechanism that likely generates huge white dwarf magnetic fields
Posted by Saúl Morales Rodriguéz in categories: physics, space
A dynamo mechanism could explain the incredibly strong magnetic fields in white dwarf stars according to an international team of scientists, including a University of Warwick astronomer.
One of the most striking phenomena in astrophysics is the presence of magnetic fields. Like the Earth, stars and stellar remnants such as white dwarfs have one. It is known that the magnetic fields of white dwarfs can be a million times stronger than that of the Earth. However, their origin has been a mystery since the discovery of the first magnetic white dwarf in the 1970s. Several theories have been proposed, but none of them has been able to explain the different occurrence rates of magnetic white dwarfs, both as individual stars and in different binary star environments.
This uncertainty may be resolved thanks to research by an international team of astrophysicists, including Professor Boris Gänsicke from the University of Warwick and led by Professor Dr. Matthias Schreiber from Núcleo Milenio de Formación Planetaria at Universidad Santa María in Chile. The team showed that a dynamo mechanism similar to the one that generates magnetic fields on Earth and other planets can work in white dwarfs, and produce much stronger fields. This research, part-funded by the Science and Technology Facilities Council (STFC) and the Leverhulme Trust, has been published in the prestigious scientific journal Nature Astronomy.
May 3, 2021
Self-organization of nanoparticles and molecules in periodic Liesegang-type structures
Posted by Saúl Morales Rodriguéz in categories: chemistry, nanotechnology, physics
Chemical organization in reaction-diffusion systems offer a strategy to generate materials with ordered morphologies and architecture. Periodic structures can be formed using molecules or nanoparticles. An emerging frontier in materials science aims to combine nanoparticles and molecules. In a new report on Science Advances, Amanda J. Ackroyd and a team of scientists in chemistry, physics and nanomaterials in Canada, Hungary and the U.S. noted how solvent evaporation from a suspension of cellulose nanocrystals (CNCs) and L-(+)-tartaric acid [abbreviated L-(+)-TA] caused the phase separation of precipitation to result in the rhythmic alteration of CNC-rich, L-(+)-TA rings. The CNC-rich regions maintained a cholesteric structure, while the L-(+)-TA-rich bands formed via radially elongated bundles to expand the knowledge of self-organizing reaction-diffusion systems and offer a strategy to design self-organizing materials.
Chemical organization
The process of self-organization and self-assembly occurs universally in non-equilibrium systems of living matter, geochemical environments, materials science and in industry. Existing experiments that lead to periodic structures can be divided into two groups including the classical Liesegang-type experiments and chemical organization via periodic precipitation to generate materials with ordered morphologies and structural hierarchy. In this work, Ackroyd et al. developed a strategy for solvent evaporation to phase separate an aqueous solution of tartaric acid/cellulose nanocrystals [L-(+)-TA/CNC or TA/CNC] for its subsequent precipitation to result in a rhythmic alternation of CNC-rich or CNC-depleted ring-type regions. The team developed a kinetic model which agreed with the experimental results quantitatively. The work expands the range of self-organizing reaction-diffusion systems to pave the way for periodically structured functional materials.
