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News articles about "Isotope"

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

Traces of Martian biological activity could be locked inside a meteorite

Did Mars ever have life Does it still A meteorite from Mars has reignited the old debate An international team that includes scientists from EPFL has published a paper in the scientific journal Meteoritics and ... - Read More

Groundwater patches play important role in forest health, water quality

Even during summer dry spells some isolated patches of soil in forested watersheds remain waterlogged These patches act as hot spots of microbial activity that remove nitrogen from groundwater and return it to the atmosphere ... - Read More

Ammonium source in open ocean tracked by researchers

To understand the extent to which human activities are polluting Earth's atmosphere and oceans it's important to distinguish human made pollutants from compounds that occur naturally A recent study co authored by a Brown University ... - Read More

Cooling to almost absolute zero with magnetic molecules

An international team of scientists have become the first ever researchers to successfully reach temperatures below minus 272.15 degrees Celsius only just above absolute zero using magnetic molecules The physicists and chemists are presenting their ... - Read More

Journey to the center of the Earth: Geochemist uses helium and lead isotopes to gain insight into makeup of planet’s deep interior

A UC Santa Barbara geochemist studying Samoan volcanoes has found evidence of the planet's early formation still trapped inside the Earth Known as hotspots volcanic island chains such as Samoa can ancient primordial signatures from ... - Read More

Method for detecting extremely rare inert gas isotopes for water dating

In the earth and environmental sciences radioactive isotopes atom variants that decay over time play a major role in age determination A radioactive isotope of the inert gas argon 39Ar for example is used to ... - Read More
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