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  • incorporation
  • Evidence of heavy metal incorporation and release, electron transfer between phases and through bulk solids, and the observation of recrystallization on the surface of the substrate mineral structures have positively confirmed the catalytic effects of aqueous Fe(II) on mineral-water interactions. (semanticscholar.org)
  • minerals
  • In recent decades, sorption of iron(III) oxides in reducing, Fe(II)-rich environment was extensively studied, with the advancement of spectroscopic techniques, researchers have found that the presence of aqueous Fe(II) changes the surface sorption activity of Fe minerals. (semanticscholar.org)
  • potential
  • It was found that Fe(II)aq promotes selenium oxyanion sorption, and potential electron transfer occurred at the interface of goethite and selenite. (semanticscholar.org)
  • deuterium
  • March 8, 2017-Deuterium and tritium-heavy isotopes of hydrogen-not only have numerous applications in science and medicine, but could also contribute to the energy mix of tomorrow as fuels for nuclear fusion. (ornl.gov)
  • Deuterium is obtained from heavy water, which occurs in natural water at a concentration of just 15 parts per thousand. (ornl.gov)
  • The heavy water is first isolated by a combination of chemical and physical methods, such as distillation, to obtain deuterium gas. (ornl.gov)
  • The whole process is so intricate and energy-intensive that a gram of deuterium with a purity of 99.8 percent costs around $100, making hydrogen's heavy brother around three times more precious than gold, although deuterium is more than 300 times more abundant in the oceans and Earth's crust than gold. (ornl.gov)
  • Among other things, they determined the quantities of deuterium and normal hydrogen that the material absorbs from a mixture of equal parts of the two isotopes at various temperatures. (ornl.gov)
  • They found that at minus 279 degrees Fahrenheit it stores 12 times more deuterium. (ornl.gov)
  • superheavy
  • Advanced computational methods and supporting experiments, including work performed at the Department of Energy's Oak Ridge National Laboratory, are giving scientists a better understanding of the nature and stability of superheavy nuclei and the heaviest elements that lie beyond the borders of the periodic table. (scienceblog.com)
  • PhysOrg.com) -- A team of scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory has detected six isotopes, never seen before, of the superheavy elements 104 through 114. (phys.org)
  • Information gained from the new isotopes will contribute to a better understanding of the theory of nuclear shell structure, which underlies predictions of an "Island of Stability," a group of long-lasting isotopes thought to exist amidst a sea of much shorter-lived, intrinsically unstable isotopes of the superheavy elements. (phys.org)
  • forensic
  • IMAGING Dr. Erin Kimmerle, a forensic anthropologist at the University of South Florida, recently reconstructed the face of a woman murder victim found in Lake Panasoffkee, Fla., in 1971. (nytimes.com)
  • Second, the past decade has seen a tremendous increase in the number of isotope applications to forensic problems. (springer.com)
  • chlorine
  • Two of the other new isotopes of sulfur and chlorine, S-49 and Cl-52, were not predicted to exist by a number of models that paint a lower resolution picture of nuclei. (phys.org)
  • soils
  • For example, Curiosity's laser-firing ChemCam instrument found a strong hydrogen signal in fine-grained Martian soils along the rover's route, reinforcing the SAM data and further suggesting that water is common in dirt across the planet (since such fine soils are globally distributed). (huffingtonpost.com)
  • nucleus
  • A typical lifetime of a nucleus is in the extremely heavy range of a millisecond," said Nazarewicz. (scienceblog.com)
  • Computationally intense theoretical modeling indicates that a large difference in the shapes of a "parent" nucleus, which decays by emitting an alpha particle, and that of its "daughter" isotope will hinder the rate of decay to that daughter. (scienceblog.com)
  • Ellison says, "There's only a very low probability that the two isotopes will interact to form a compound nucleus. (phys.org)
  • abundant
  • The researchers found that mercury is 100 000 times as abundant in the surface of chi Lupi as in the Sun's surface, while platinum, gold and thallium are each 10 000 times as abundant. (newscientist.com)
  • isolate
  • Ken Gregorich, a senior staff scientist in NSD, is responsible for the group's day-to-day research operation at the 88-inch Cyclotron and the Berkeley Gas-filled Separator, the instrument used to isolate and identify the new isotopes. (phys.org)
  • proton and neutron
  • Theorists like Nazarewicz and his Nature co-authors, the late S. Cwiok of the Warsaw University of Technology, Poland, and P.-H. Heenen of the Free University of Brussells, Belgium, believe that in the extremely heavy regions, the interplay of nuclear shapes and proton and neutron arrangements eventually will approach relatively stable, "near-magic" states. (scienceblog.com)
  • efficiently
  • They have presented a metal-organic framework compound that can be used to separate the two isotopes from normal hydrogen more efficiently than previous methods. (ornl.gov)
  • atomic
  • From its home base in Santa Clara, California, Picarro is at the leading edge of this 'step change' in atomic and isotope chemistry. (cleantechnica.com)
  • contrast
  • In contrast, we found increased turnover rates for mitochondrial proteins of the oxidative phosphorylation chain in the aged mice as compared to young mice. (frontiersin.org)
  • grown
  • California wine growers are employing Picarro's stable isotope analyzers to authenticate exactly where the grapes used to make specific bottles of wine were grown. (cleantechnica.com)
  • Martian
  • Pilinger's Beagle 2 carried precisely the instrumentation needed to determine the carbon isotope ratios of any methane in the Martian atmosphere. (enterprisemission.com)
  • If the current methane is not being produced by living organisms, but is "merely" being released into the Martian atmosphere via some low level geological process (volcanism, or earthquake activity - although Mars Odyssey and its IR THEMIS instrument have found NO evidence of current volcanism, anywhere on Mars), then this simple fact is presenting us with a literally revolutionary window on Mars' ancient history. (enterprisemission.com)
  • NASA's Curiosity rover has gulped in Martian air but failed to find methane - a gas linked to living things. (latimes.com)
  • temperatures
  • We found that while the summer temperatures remained the same, winter temperatures dropped 4 degrees Celsius," says Linda C. Ivany, a visiting assistant professor of earth sciences at Syracuse University. (scienceagogo.com)
  • element
  • Starting with the creation of a new isotope of the yet-to-be-named element 114, the researchers observed successive emissions of alpha particles that yielded new isotopes of copernicium (element 112), darmstadtium (element 110), hassium (element 108), seaborgium (element 106), and rutherfordium (element 104). (phys.org)
  • The group that found the new isotopes is led by Heino Nitsche, head of the Heavy Element Nuclear and Radiochemistry Group in Berkeley Lab's Nuclear Science Division (NSD) and professor of chemistry at the University of California at Berkeley. (phys.org)
  • elements
  • But new data from the Hubble Space Telescope show that, for at least some of these stars, the abundance of heavy elements may be little more than skin-deep. (newscientist.com)
  • In the past, astronomers believed that peculiar stars amassed their riches from neighbouring exploding supernovae, which deposited the heavy elements on their neighbours' surfaces. (newscientist.com)
  • However, not all heavy elements are so plentiful. (newscientist.com)
  • These are the heaviest isotopes of these elements ever found. (phys.org)
  • But if the hypothesis that light elements actually evaporated from Moon rocks during their formation is correct, you'd expect to find evidence of elements being layered by mass - heavier elements would condense first, and so on. (slashdot.org)
  • Elements heavier than 114 have been seen but none have been independently confirmed. (phys.org)
  • particles
  • Graphene-based membranes could make the production of heavy water more efficient through its ability to effectively isotopically separate particles, leading to greener and cheaper nuclear power. (theiet.org)
  • nature
  • That allowed them to confirm that they had, indeed, found a new 'phase' or polymorph of crystalline carbon as well as a type of diamond that had been predicted to exist decades ago, but had never been found in nature until now. (slashdot.org)
  • This first-of-its-kind spatially dependent Fe isotope investigation of a convergent margin related pluton aims to understand the nature of granite and silicic igneous rock formation. (illinois.edu)
  • crops
  • A research team led by the University of Oxford has found that Neolithic farmers manured and watered their crops as early as 6,000 BC. (agrihunt.com)
  • nuclear
  • Creating and identifying rare isotopes is the nuclear-physics version of a formidable needle-in-a-haystack problem. (phys.org)
  • But in some cases, certain isotopes may be much more stable, or long-lived, and this stability may depend on the nuclear shape. (scienceblog.com)
  • recent
  • Promising workers lower health insurance premiums for losing weight did nothing to help them take off the pounds, a recent study found . (kuow.org)