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The NASA/ESA Hubble Space Telescope has observed the supernova remnant named 1E 0102.2-7219. Researchers are using Hubble's imagery of the remnant object to wind back the clock on the expanding remains of this exploded star in the hope of understanding the supernova event that caused it 1700 years ago.
The featured star that exploded long ago belongs to the Small Magellanic Cloud, a satellite galaxy of our Milky Way located roughly 200 000 light-years away. The doomed star left behind an expanding, gaseous corpse -- a supernova remnant -- known as 1E 0102.2-7219.
The experiment was performed at the Research Center for Nuclear Physics (RCNP) in Osaka. The research team, lead by scientists from TU Darmstadt and the GSI Helmholtz Center for Heavy-Ion Research, and from the RIKEN Nishina Center for Accelerator-Based Science, discuss the new findings in a contribution to the latest issue of the journal "Science".
The White-lipped peccary Tayassu pecari is a boar-like hoofed mammal found throughout Central and South America. These animals roam the forest in bands of 50 to 100 individuals, eating a wide variety of foods. In Brazil's Atlantic Rainforest, they prefer the fruit of the jussara palm Euterpe edulis.
The jussara is very abundant in this biome, probably thanks to vast amounts of dung, urine, and soil trampling by peccaries as well as tapirs (Tapirus terrestris) and other fruit-eating animals, or frugivores. This behavior releases forms of nitrogen, a key element in plant growth.
Liquids are ubiquitous in Nature: from the water that we consume daily to superfluid helium which is a quantum liquid appearing at temperatures as low as only a few degrees above the absolute zero. A common feature of these vastly different liquids is being self-bound in free space in the form of droplets. Understanding from a microscopic perspective how a liquid is formed by adding particles one by one is a significant challenge.
Researchers from Skoltech and the University of Texas Medical Branch (US) have shown how optoacoustics can be used for monitoring skin water content, a technique which is promising for medical applications such as tissue trauma management and in cosmetology. The paper outlining these results was published in the Journal of Biophotonics.
COLUMBUS, Ohio - "Buy low and sell high" says the old adage about investing in the stock market.
But a relatively new type of investment fund is luring unsophisticated investors into buying when values are at their highest, resulting in losses almost immediately, a new study has found.
The lure? Buying into trendy investment areas like cannabis, cybersecurity and work-from-home businesses.
Pediatric laryngotracheal stenosis (LTS), a narrowing of the airway in children, is a complex medical condition. While it can be something a child is born with or caused by injury, the condition can result in a life-threatening emergency if untreated.
Treatment, however, is challenging. Depending on the severity, doctors will use a combination of endoscopic techniques, surgical repair, tracheostomy, or deployment of stents to hold the airway open and enable breathing.
Plant pathologists working at universities across 26 corn-producing states in the United States and in Ontario, Canada, compiled data about annual corn reductions caused by diseases. Estimated loss from each disease varied greatly by region.
The U.S. fishing and seafood sector generated more than $200 billion in annual sales and supported 1.7 million jobs in recent years. It experienced broad declines in 2020 as a result of the COVID-19 public health crisis, according to a new NOAA Fisheries analysis released today.
COLUMBIA, Mo. - When he was in middle school, teachers would give Sam Curran a list of words to type in a computer to practice his vocabulary. But Sam, who has autism, was unable to stay focused on the task and required a significant amount of one-to-one direction from a teacher to complete his work. After his mother, Alicia, persuaded his teachers to allow Sam to change the colors of the words, he was able to complete work more independently and began making remarkable progress.
Exactly what kills a person with COVID-19?
How do those deaths differ from the deaths of people whose lungs fail rapidly because of other infections or injuries?
And what can hospital teams pressed into service on overtaxed COVID-19 wards do to try to keep patients from dying, despite strained circumstances?
All of these questions have sparked discussion - and even conspiracy theories - since the pandemic began. Now, two studies from Michigan Medicine may help answer them.
A University of Saskatchewan study has found that the COVID-19 pandemic has led to significant worsening of already poor dietary habits, low activity levels, sedentary behaviour, and high alcohol consumption among university students.
Researchers led by Tokyo Medical and Dental University (TMDU) find that certain oral pathogens are more prevalent in esophageal cancer patients, and could be used as a novel diagnostic tool
Tokyo, Japan - It is increasingly clear that the trillions of bacteria that make themselves at home in and on the human body are more than just casual observers along for the ride. Gut bacteria in particular have been shown to have an enormous influence on human health, with studies suggesting they play a role in illnesses ranging from autoimmune disorders to anxiety and depression.
Dinitrogen (N2) fixation is considered as one of the most essential tasks in basic science, providing straightforward methods to produce ammonia and nitrogen-containing molecules. Exploring the reactivity of N2 units of transition metal-nitrogen complexes is of great significance and challenging in the chemistry. Since the first Ru-N2 complex was prepared in 1965, important progress has been made in the synthesis and reactivity of transition metal nitrogen complexes.
In a new study, an international research team led by Sebastian Stumpf from the University of Vienna describes an exceptionally well-preserved skeleton of the ancient shark Asteracanthus. This extremely rare fossil find comes from the famous Solnhofen limestones in Bavaria, which was formed in a tropical-subtropical lagoon landscape during the Late Jurassic, about 150 million years ago. The almost complete skeleton shows that Asteracanthus was two-and-a-half meters long in life, which makes this ancient shark one of the largest of its time.