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News articles about "Isotope"

Argonne Radioisotopes Have Potential for Medical Diagnosis and Treatment

are essential to nuclear medicine In an effort to return to a stable mass isotopes known as radioisotopes emit radiation that can damage diseased tissue and can be traced in certain environments making them useful ... - Read More

"Weighing" Atoms with Electrons

Oct 12 2016 The different elements found in nature each have their distinct isotopes For carbon there are 99 atoms of the lighter stable carbon isotope 12C for each 13C atom which has one more ... - Read More

UChicago Site of Radiocarbon Dating Discovery Named Historic Landmark

not 25 000 years ago as previously believed “This radiocarbon dating method was a transformative advance to archaeology and historical studies allowing the determination of the age of archeological sites and objects without reliance on ... - Read More

Chemistry Says Moon Is Proto-Earth's Mantle, Relocated

but two have been very influential ” In the original giant impact model the impact melted a part of the Earth and the entire impactor flinging some of the melt outward like clay from a ... - Read More

Humans settled, set fire to Madagascar's forests 1,000 years ago

There's no question that our species has had a dramatic impact on the planet's physical environment particularly over the last few centuries with the rise of modern industry transportation and infrastructure But as new research ... - Read More

Cracking Cases

there is undeniable potential for a NACIL future that honors its past ORNL is managed by UT Battelle for the Department of Energy’s Office of Science DOE’s Office of Science is the single largest supporter ... - Read More

Energy-Efficient Reaction Drives ORNL Biofuel Conversion Technology

Released 3 Nov 2015 11 05 AM ESTSource Newsroom Oak Ridge National Laboratory more news from this source Add to Favorites Contact Information Available for logged in reporters only Citations Nature Scientific ReportsNov 4 2015 ... - Read More

Ascension of marine diatoms linked to vast increase in continental weathering

A team of researchers including Rensselaer professor Morgan Schaller has used mathematical modeling to show that continental erosion over the last 40 million years has contributed to the success of diatoms a group of tiny ... - Read More

Evidence from glacier ice: Until it was banned, leaded gasoline dominated the humanmade lead emissions in South America

Leaded gasoline was a larger emission source of the toxic heavy metal lead than mining in South America even though the extraction of metals from the region's mines historically released huge quantities of lead into ... - Read More

Snffing out origins of methane: instrument identifies methane's origins in mines, deep-sea vents, and cows

Methane is a potent greenhouse gas second only to carbon dioxide in its capacity to trap heat in Earth's atmosphere for a long time The gas can originate from lakes and swamps natural gas pipelines ... - Read More

The Making of a Geochemist: Q&A with Andrew Stack

interview by Dawn Levy IMAGE 1 2015 P00289CAPTION CREDITAndrew Stack of Oak Ridge National Laboratory calls on his expertise in geology chemistry and computing to advance understanding of the dynamics of minerals underground Image credit ... - Read More

Lasting severe weather impact found in feathers of young birds

While studying a ground nesting bird population near El Reno Okla a University of Oklahoma led research team found that stress during a severe weather outbreak of May 31 2013 had manifested itself into malformations ... - Read More

Lake Tahoe research provides new insights on global change

A Scripps Institution of Oceanography led study on how natural and human made sources of nitrogen are recycled through the Lake Tahoe ecosystem provides new information on how global change may affect the iconic blue ... - Read More

Looking back into the past of oceans: Acidification trends, seasonal fluctuations

Next to global warming ocean acidification is currently considered as the second major carbon dioxide problem With the increase of carbon dioxide CO2 in the atmosphere larger quantities of the gas are getting into the ... - Read More

Getting a grip on exotic atomic nuclei

A new model describing atomic nuclei proposed by a physicist from the University of Warsaw Faculty of Physics more accurately predicts the properties of various exotic isotopes that are created in supernova explosions or inside ... - Read More

Classical nova explosions are major lithium factories in the universe

A team of astronomers from National Astronomical Observatory of Japan NAOJ Osaka Kyoiku University Nagoya University and Kyoto Sangyo University observed Nova Delphini 2013 which occurred on August 14 2013. Using the 8.2 meter Subaru ... - Read More

Voyage from Earth's crust to its mantle and back again

Uranium isotopes leave a distinct 'fingerprint' in the sources of volcanic rocks making it possible to gauge their age and origin Geologists have gained a new understanding of how Earth's crust is recycled back into ... - Read More

Antiquity of dairying on Emerald Isle revealed

As dairy farmers across Europe anxiously await the lifting of EU milk quotas in April this year new research from the University of Bristol UK has revealed the antiquity of dairy farming in a region ... - Read More

'Seeing' hydrogen atoms to unveil enzyme catalysis that may play key role in cancer drug development

Enzymes are catalysts that speed up chemical reactions in living organisms and control many cellular biological processes by converting a molecule or substrate into a product used by the cell For scientists understanding details of ... - Read More

"Seeing" Hydrogen Atoms to Unveil Enzyme Catalysis

how small its samples can be how large the crystal unit cells we can resolve ” said Kovalevsky “But this result shows the instrument is performing to its specifications which is exciting ” For future ... - Read More
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