sqciences energies environnement blogger

 er Week 20

Yahoo/Boîte récept.

• 

  Newsletter Science X 

  Expéditeur :not-for-reply@physorg.com

  À :olivier hartmanshenn

  lun. 19 mai à 05:34

  Dear olivier hartmanshenn,

  Here is your customized Science X Newsletter for week 20:

  	Universe expected to decay in 10⁷⁸ years, much sooner than previously thought The universe is decaying much faster than thought. This is shown by calculations of three Dutch scientists on the so-called Hawking radiation. They calculate that the last stellar remnants take about 1078 years to perish. That is much shorter than the previously postulated 101100 years.
  	Long working hours may alter brain structure, preliminary findings suggest Long working hours may alter the structure of the brain, particularly the areas associated with emotional regulation and executive function, such as working memory and problem solving, suggest the findings of preliminary research, published online in Occupational & Environmental Medicine.
  	Migraine drug can also help with symptoms that occur before the actual headache begins A drug to treat migraine, ubrogepant, is also found to reduce common non-headache symptoms that occur in the hours preceding a migraine headache, according to the results of a large phase three clinical trial published in Nature Medicine. The findings suggest that ubrogepant may be the first acute treatment for the symptoms that occur before migraine, which have a considerable impact on daily function.
  	Deep brain regions link all senses to consciousness, study finds A Yale-led study shows that the senses stimulate a region of the brain that controls consciousness—a finding that might inform treatment for disorders related to attention, arousal, and more.
  	Voyager 1 revives backup thrusters before command pause Engineers at NASA's Jet Propulsion Laboratory in Southern California have revived a set of thrusters aboard the Voyager 1 spacecraft that had been considered inoperable since 2004. Fixing the thrusters required creativity and risk, but the team wants to have them available as a backup to a set of active thrusters whose fuel tubes are experiencing a buildup of residue that could cause them to stop working as early as this fall.
  	An experimental immunotherapy reverses heart energy damage caused by cholesterol An international team of researchers has discovered how cholesterol can disrupt the internal functioning of the heart by accumulating in the mitochondria of cardiomyocytes. They have also developed an experimental immunotherapy capable of reversing this process and restoring cellular energy production.
  	Molecule reverses cognitive deficits associated with aging and dementia in animal tests In Brazil, researchers from the Federal University of Rio de Janeiro (UFRJ) and collaborators from the University of São Paulo (USP) have discovered that a molecule called Hevin can reverse cognitive impairment. The study, conducted in mice, showed that this glycoprotein produced by brain cells (astrocytes) is able to increase the connections between neurons (synapses) in aged rodents and in animal models of Alzheimer's disease.
  	From prehistoric resident to runaway pet: First tegu fossil found in the US Originally from South America, the charismatic tegu made its way to the United States via the pet trade of the 1990s. After wreaking havoc in Florida's ecosystems, the exotic lizard was classified as an invasive species. But a recent discovery from the Florida Museum of Natural History reveals the reptiles are no strangers to the region—tegus were here millions of years before their modern relatives arrived in pet carriers.
  	Collective memory loss in herring results in 800 km shift in spawning grounds Researchers led by the Institute of Marine Research in Norway report an 800 km poleward shift in the spawning grounds of Norwegian spring-spawning herring (NSS herring) following a loss of collective migration memory among older fish due to age-selective fishing. Findings indicate potential disruptions to coastal food webs and present challenges for fisheries management.
  	Protein problem: Researchers challenge fundamental assumption in evolutionary biochemistry How did life originate? Ancient proteins may hold important clues. Every organism on Earth is made up of proteins. Although all organisms—even single-celled ones—have complex protein structures now, this wasn't always the case.
  	Paleontologists discover 506-million-year-old predator Paleontologists at the Manitoba Museum and Royal Ontario Museum (ROM) have discovered a remarkable new 506-million-year-old predator from the Burgess Shale of Canada. The results are announced in a paper in the journal Royal Society Open Science.
  	UV light and CT scans help scientists unlock hidden details in a perfectly-preserved fossil Archaeopteryx Archaeopteryx is the fossil that proved Darwin right. It's the oldest known fossil bird, and it helps show that all birds— including the ones alive today—are dinosaurs. And while the first Archaeopteryx fossil was found more than 160 years ago, scientists are continuing to learn new things about this ancient animal.
  	Discovery of ancient culture on remote Scottish isle rewrites the range of early settlers Researchers led by the University of Glasgow in Scotland have identified a Late Upper Paleolithic site in the far north of the Isle of Skye, marking the most northerly evidence of Ahrensburgian culture in Britain.
  	Golf course proximity linked to higher Parkinson's disease risk Barrow Neurological Institute and Mayo Clinic-led researchers report an association between living near golf courses and increased Parkinson's disease (PD) risk in a study published in JAMA Network Open.
  	Chimpanzees use medicinal leaves to perform first aid, scientists discover Scientists studying chimpanzees in Budongo Forest, Uganda, have observed that these primates don't just treat their own injuries, but care for others, too—information which could shed light on how our ancestors first began treating wounds and using medicines.
  	Archaeologists uncover monumental relief of King Ashurbanipal in ancient city of Nineveh A team from Heidelberg University excavating in Iraq made a spectacular find: In the throne room of the North Palace of King Ashurbanipal in the ancient city of Nineveh, the archaeologists discovered large portions of a monumental relief that depicts the ruler of the Assyrian empire from the seventh century BC along with two important deities and other figures.
  	Twist of light: Non-reciprocity in photon polarization may unlock gravity and quantum mechanics link A team of physicists has uncovered a surprising new way to explore one of science's greatest challenges: uniting the two fundamental theories that explain how our universe works—Einstein's theory of gravity and quantum mechanics.
  	New insights into black hole scattering and gravitational waves unveiled A study published in Nature has established a new benchmark in modeling the universe's most extreme events: the collisions of black holes and neutron stars. This research, led by Professor Jan Plefka at Humboldt University of Berlin and Queen Mary University London's Dr. Gustav Mogull, formerly at Humboldt Universität and the Max Planck Institute for Gravitational Physics (Albert Einstein Institute), and conducted in collaboration with an international team of physicists, provides unprecedented precision in calculations crucial to understanding gravitational waves.
  	Algorithm based on LLMs doubles lossless data compression rates People store large quantities of data in their electronic devices and transfer some of this data to others, whether for professional or personal reasons. Data compression methods are thus of the utmost importance, as they can boost the efficiency of devices and communications, making users less reliant on cloud data services and external storage devices.
  	Homo erectus from the seabed—new archaeological discoveries in Indonesia Archaeological finds off the coast of Java, Indonesia, provide insight into the world of Homo erectus, 140,000 years ago. Skull fragments and other fossil remains provide a unique picture of how and where these early humans lived, says Leiden archaeologist Harold Berghuis. er Week 20 YahooA