Atmospheric measurements made at Earths geographic poles provide a convenient way of validating and calibrating global circulation models. Such measurements also might provide some of the first conclusive evidence of global change in the middle and upper atmospheres. But new data shows that the current models are wrong: Temperatures over the South Pole are much colder in winter than scientists had anticipated.
As reported in the Aug. 28 issue of Geophysical Research Letters, scientists have found that temperatures during mid-winter in the stratopause and mesopause regions at the South Pole are about 40-50 degrees Fahrenheit colder than model predictions.
The work was performed by Chester Gardner, a professor of electrical and computer engineering at the University of Illinois at Urbana-Champaign; Weilin Pan, a doctoral student at Illinois; and Ray Roble, a senior scientist at the High Altitude Observatory of the National Center for Atmospheric Research in Boulder, Colo.
James E. Kloeppel | EurekAlert!
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25.05.2020 | Science China Press
New technique separates industrial noise from natural seismic signals
20.05.2020 | DOE/Los Alamos National Laboratory
Microelectronics as a key technology enables numerous innovations in the field of intelligent medical technology. The Fraunhofer Institute for Biomedical Engineering IBMT coordinates the BMBF cooperative project "I-call" realizing the first electronic system for ultrasound-based, safe and interference-resistant data transmission between implants in the human body.
When microelectronic systems are used for medical applications, they have to meet high requirements in terms of biocompatibility, reliability, energy...
Thomas Heine, Professor of Theoretical Chemistry at TU Dresden, together with his team, first predicted a topological 2D polymer in 2019. Only one year later, an international team led by Italian researchers was able to synthesize these materials and experimentally prove their topological properties. For the renowned journal Nature Materials, this was the occasion to invite Thomas Heine to a News and Views article, which was published this week. Under the title "Making 2D Topological Polymers a reality" Prof. Heine describes how his theory became a reality.
Ultrathin materials are extremely interesting as building blocks for next generation nano electronic devices, as it is much easier to make circuits and other...
Scientists took a leukocyte as the blueprint and developed a microrobot that has the size, shape and moving capabilities of a white blood cell. Simulating a blood vessel in a laboratory setting, they succeeded in magnetically navigating the ball-shaped microroller through this dynamic and dense environment. The drug-delivery vehicle withstood the simulated blood flow, pushing the developments in targeted drug delivery a step further: inside the body, there is no better access route to all tissues and organs than the circulatory system. A robot that could actually travel through this finely woven web would revolutionize the minimally-invasive treatment of illnesses.
A team of scientists from the Max Planck Institute for Intelligent Systems (MPI-IS) in Stuttgart invented a tiny microrobot that resembles a white blood cell...
By studying the chemical elements on Mars today -- including carbon and oxygen -- scientists can work backwards to piece together the history of a planet that once had the conditions necessary to support life.
Weaving this story, element by element, from roughly 140 million miles (225 million kilometers) away is a painstaking process. But scientists aren't the type...
Study co-led by Berkeley Lab reveals how wavelike plasmons could power up a new class of sensing and photochemical technologies at the nanoscale
Wavelike, collective oscillations of electrons known as "plasmons" are very important for determining the optical and electronic properties of metals.
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25.05.2020 | Information Technology