Page 7010
Jan 7, 2021
Researchers Microwave Coal Powder Into Nano-Graphite
Posted by Raphael Ramos in category: nanotechnology
University of Wyoming researchers demonstrated their method using a traditional microwave oven. Read it here.
Jan 7, 2021
Extinct Predator Cave Lions Could be Brought Back to Life
Posted by Quinn Sena in category: military
Ten thousands of years ago, the cave lion Panthera spelaea, a very intriguing subspecies of the modern-day lion which thrived on the Eurasian plateau, went extinct for reasons unknown.
A powerful ruler of the European steppe, the cave lion roamed territories from Spain to the far-off east of Russia. Fossils and bones have been dug out even in Alaska.
Continue reading “Extinct Predator Cave Lions Could be Brought Back to Life” »
Jan 7, 2021
Researchers question fundamental study on the Kondo effect
Posted by Saúl Morales Rodriguéz in categories: computing, particle physics, quantum physics
The Kondo effect influences the electrical resistance of metals at low temperatures and generates complex electronic and magnetic orders. Novel concepts for data storage and processing, such as using quantum dots, are based on this. In 1998, researchers from the United States published spectroscopic studies on the Kondo effect using scanning tunneling microscopy, which are considered ground-breaking and have triggered countless others of a similar kind. Many of these studies may have to be re-examined now that Jülich researchers have shown that the Kondo effect cannot be proven beyond doubt by this method. Instead, another phenomenon is creating precisely the spectroscopic ‘fingerprint’ that was previously attributed to the Kondo effect.
Normally the resistance of metals decreases as the temperature drops. The Kondo effect causes it to rise again below a threshold value typical to the material in question, the so-called Kondo temperature. This phenomenon occurs when magnetic foreign atoms, such as iron, contaminate non-magnetic host metals, such as copper. Simply put, when a current flows, the atomic nuclei are engulfed by electrons. The iron atoms have a quantum mechanical magnetic moment. This causes the electrons in the vicinity to align their spin antiparallel to the moment of the atom at low temperatures and to hang around the cobalt atom like a cloud on a mountaintop. This hinders the flow of the electrons—the electrical resistance then increases. In physics, this is known as entanglement, the strong coupling of the moment of the impurity with the spins of the surrounding electrons.
Jan 7, 2021
After decades of effort, scientists are finally seeing black holes—or are they?
Posted by Derick Lee in category: cosmology
Scientists hope to answer three specific questions: Do the observed black holes really have event horizons? Are they as featureless as the no-hair theorem says? And do they distort spacetime exactly as the Kerr metric predicts?
How do you prove that you’re observing a bizarre, featureless hole in the fabric of space and time?
Jan 7, 2021
Ryland Engelhart — Kiss The Ground — Regenerative Agriculture For Planetary Regeneration
Posted by Ira S. Pastor in categories: business, education, food, sustainability
Executive director & co-founder of kiss the ground, and producer of kiss the ground the movie, discussing regenerative agriculture for planetary regeneration.
Ryland Engelhart, is Executive Director & Co-Founder of Kiss The Ground (https://kisstheground.com/), a non-profit organization dedicated to planetary regeneration, and is the producer of Kiss The Ground, the Movie, recently released on Netflix.
Jan 7, 2021
Supercomputer models describe chloride’s role in corrosion
Posted by Saúl Morales Rodriguéz in categories: economics, supercomputing
Researchers have been studying chloride’s corrosive effects on various materials for decades. Now thanks to high-performance computers at the San Diego Supercomputer Center (SDSC) at UC San Diego and the Texas Advanced Computing Center (TACC), detailed models have been simulated to provide new insight on how chloride leads to corrosion on structrual metals, resulting in economic and environmental impacts.
Conducted by a team from Oregon State University’s (OSU) College of Engineering, a study discussing this newfound information was published in Materials Degradation, a Nature partner journal.
“Steels are the most widely used structural metals in the world and their corrosion has severe economic, environmental, and social implications,” said study co-author Burkan Isgor, an OSU civil and construction engineering professor. “Understanding the process of how protective passive films break down helps us custom design effective alloys and corrosion inhibitors that can increase the service life of structures that are exposed to chloride attacks.”
Jan 7, 2021
Researchers Identify and Characterize 3 Molecular Subtypes of Alzheimer’s
Posted by Genevieve Klien in categories: biotech/medical, neuroscience
Summary: Using data from RNA sequencing, researchers have identified three molecular subtypes of Alzheimer’s disease.
Source: Mount Sinai Hospital.
Researchers at the Icahn School of Medicine at Mount Sinai have identified three major molecular subtypes of Alzheimer’s disease (AD) using data from RNA sequencing. The study advances our understanding of the mechanisms of AD and could pave the way for developing novel, personalized therapeutics.