Keyword: isotopes
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November 21, 2022 Share Email 592205.jpg Credit: U.S. Military One of the keys to bringing home unidentified military remains, including POW/MIAs and the more than 81,500 soldiers unaccounted for in conflicts dating back to World War II, is using science to determine where home might be. University of Utah scientists are engaged in an effort, in support of the Defense POW/MIA Accounting Agency, to develop methods that can trace the geographic origin of remains, particularly teeth. Why teeth? Because everyone’s body, including their teeth, contains a record of where they’ve lived and traveled in the form of various stable isotopes...
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Scientists have discovered that the extinct megalodon shark was warm-blooded, as indicated by the isotopes in its tooth enamel. Their research suggests that the megalodon could maintain a body temperature about 13 degrees Fahrenheit warmer than the surrounding water, a significant difference compared to other contemporary sharks. A killer, yes. But analysis of tooth minerals reveals how the warm-blooded predator maintained its body temperature. Researchers have determined that the extinct megalodon shark was warm-blooded, able to maintain its body temperature higher than the surrounding water. However, the energy needed for this temperature regulation might have contributed to the megalodon’s extinction...
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The Biden team must have sanctioned China’s balloon flying over the US says a former RAF and commercial airline pilot who flew in and out of the US. A former Royal Air Force pilot who flew Harrier jets and then flew hundreds of flights in and out of the US as a commercial pilot shared some breaking information with TGP. The former RAF pilot shared the following: At an absolute minimum, an object flying over the United States, a plane or balloon, has to file a flight plan. In addition, at the absolute minimum, the object (plane or balloon) must...
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Russia launched its attack on Ukraine in February 2022 with plans for a quick victory. Those plans depended in part on seizing Ukraine's nuclear power plants and using them for leverage. Russia's ambitions for those plants were foiled when Ukraine fended off the initial attack. ==================== When he launched his invasion, Russian President Vladimir Putin had ambitious goals for Ukraine. Within three days to a week of attacking, Putin planned to capture Kyiv, topple Ukraine's government, and demilitarize Ukrainian forces. According to an analysis of the first five months of the war by the Royal United Services Institute, a British...
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A massive spy balloon believed to be from China was seen above Montana on Thursday and is being tracked as it flies across the continental United States, with President Joe Biden ultimately deciding against "military options" because of the risk to civilians, U.S. officials said on Thursday.
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Radiation sensors in Stockholm have detected higher-than-usual but still harmless levels of isotopes produced by nuclear fission, probably from somewhere on or near the Baltic Sea, a body running a worldwide network of the sensors said on Friday. The Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) oversees a network of hundreds of monitoring stations that use seismic, hydroacoustic and other technology to check for a nuclear weapon test anywhere in the world. That technology can, however, be put to other uses as well. One of its stations scanning the air for radionuclides - telltale radioactive particles that can be carried long distances...
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In the 1990s, the remains of six Neanderthals -- two adults, two adolescents and two children -- were found in a small cave at Baume Moula-Guercy in the Rhône valley in southern France. The bones bear many of the hallmarks of cannibalism: cut marks made by stone tools, complete dismemberment of the individuals, and finger bones that look as if they've been gnawed by Neanderthal teeth, rather than by other carnivores. Remains from other sites in Croatia, Spain and Belgium also show evidence of cannibalism. But in each case, there has been a lack of evidence to answer the question...
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In France, the Bell Beaker period lasted from around 2500 to 1800 BCE... But ceramics from as far back as the middle Neolithic -- around 5500 BCE -- and as recently as the Iron Age -- around 1000 BCE -- have also been found at the site... James and colleagues date a further eight individuals, using teeth from seven adults and one child. [Six of the teeth were from the Bell Beaker period, but one was much older -- dating to between 3650 and 3522 BCE -- and one much younger -- from 1277 to 1121 BCE... It's not known...
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In two previous studies, researchers analyzed isotopes (an element that has a different number of neutrons than normal in its nucleus) in the women's remains, so they could piece together where the women had lived. But now, new research finds that these analyses were likely contaminated by modern agricultural lime... However, the researchers of the original studies are standing by their work... Both Bronze Age women are well known by archaeologists; the remains of Egtved Girl (the possible priestess) and Skrydstrup Woman were found in Denmark in 1921 and 1935, respectively. More recently, the Freis and their colleagues found that...
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Uranium is the element having 92 protons in its nucleus with typically 146 neutrons. It is the largest naturally occurring element. Like naturally occurring Thorium, uranium is radioactive and eventually decays into radium and radon which are likewise radioactive. Both uranium and thorium decay through many series of radioactive elements until they eventually become lead. The process of radioactive decay follows a common yet generally unfamiliar law known as exponential decay. It is from this decay law that we get the term, "half-life". The way this works is that when you start with a fixed amount of a radioactive material,...
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New analysis shows a way to self-propel subatomic particles, extend the lifetime of unstable isotopes. David L. Chandler | MIT News Office January 20, 2015 Press Inquiries Some physical principles have been considered immutable since the time of Isaac Newton: Light always travels in straight lines. No physical object can change its speed unless some outside force acts on it. Not so fast, says a new generation of physicists: While the underlying physical laws haven’t changed, new ways of “tricking” those laws to permit seemingly impossible actions have begun to appear. For example, work that began in 2007 proved that...
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More Fluctuations Found in Isotopic Clocks by Brian Thomas, M.S. | Aug. 17, 2012 Age-dating a rock using its radioactive isotopes only works by assuming that the rate at which that "clock" ticks was constant in the past and essentially identical to that in the present. Not long ago, scientists discovered excess helium in crystals1 and "orphaned" polonium radiohalos,2 both of which imply that the decay rates of isotopes commonly used to date earth rocks were dramatically accelerated in the past. Even today, researchers are finding small but significant changes in isotope decay rates, and these add credibility to the...
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This follow up story aired today at 5pm in San Diego. I believe that there will be heads rolling at this port ASAP. http://www.youtube.com/watch?v=JB580sKFZlo http://www.youtube.com/watch?v=GOaE7mGnCO0
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The U.S. Senate gave final passage to an energy and water spending bill Oct. 15 that denies President Barack Obama’s request for $30 million for the Department of Energy to restart production of plutonium-238 (pu-238) for NASA deep space missions. The House of Representatives originally approved $10 million of Obama’s pu-238 request for next year, but ultimately adopted the Senate’s position before voting Oct. 1 to approve the conference report on the 2010 Energy-Water Appropriations bill (H.R. 3183). The bill now heads to Obama, who is expected to sign it. NASA relies on pu-238 to power long-lasting spacecraft batteries that...
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POSTED: 7:41 pm MDT June 23, 2009 UPDATED: 12:06 am MDT June 24, 2009 ALBUQUERQUE, N.M. -- The crowd for Tuesday night's Isotopes game could be a record one and those fortunate enough to have tickets are already getting into the ball park. Fan Kyle Morrow made sure he didn't miss his chance. "I came in at 9 o'clock this morning, because I live baseball and I love Manny Ramirez" Morrow said. Morrow was one of thousands in a standing room only crowd who will pack into Isotopes Stadium for a glance at Manny Ramirez," said Morrow. "He gave this...
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Written in Bone Volume 60 Number 3, May/June 2007 by Brenda Fowler How radioactive isotopes reveal the migrations of ancient people A molar from the city of Campeche in Mexico (Courtesy Douglas Price) In the late thirteenth century, drought ravaged the American Southwest, withering the corn, squash, and beans upon which ancient inhabitants relied for survival. Across the region people abandoned their homes in a desperate search for arable land. Some were lucky enough to find a moist Arizona valley where they built a settlement now known as Grasshopper Pueblo. At its peak, the pueblo consisted of 500 rooms housing...
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