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News articles about "Isotope"

Imaging fuel injectors with neutrons

Blowing bubbles may be fun for kids but for engineers bubbles can disrupt fluid flow and damage metal Researchers from the Fuels Engines and Emissions Research Center at the Department of Energy's Oak Ridge National ... - Read More

High Flux Isotope Reactor Named Nuclear Historic Landmark

The High Flux Isotope Reactor or HFIR now in its 48th year of providing neutrons for research and isotope production at the Department of Energy's Oak Ridge National Laboratory has been designated a Nuclear Historic ... - Read More

Life forms appeared at least 60 million years earlier than previously thought

Geologists from Trinity College Dublin have rewritten the evolutionary history books by finding that oxygen producing life forms were present on Earth some 3 billion years ago a full 60 million years earlier than previously ... - Read More

Discrepancy in Greenland temperatures during end of last ice age resolved

A new study of three ice cores from Greenland documents the warming of the large ice sheet at the end of the last ice age resolving a long standing paradox over when that warming occurred ... - Read More

Ancient ocean currents may have changed pacing and intensity of ice ages: Slowing of currents may have flipped switch

For decades climate scientists have tried to explain why ice age cycles became longer and more intense about 900 000 years ago switching from 41 000 year cycles to 100 000 year cycles In a ... - Read More

Team develops a geothermometer for methane formation

Methane is a simple molecule consisting of just one carbon atom bound to four hydrogen atoms But that simplicity belies the complex role the molecule plays on Earth it is an important greenhouse gas is ... - Read More

Richest marine reptile fossil bed along Africa's South Atlantic coast is dated at 71.5 mya

A new study uses carbon isotope dating to determine the first precise age for this bed and ties the western coast of Africa to 30 million years of global geologic records Paleontologists at Southern Methodist ... - Read More

Approaching the island of stability: Observation of the superheavy element 117

The periodic table of the elements is to get crowded towards its heaviest members Evidence for the artificial creation of element 117 has recently been obtained at the GSI Helmholtz Centre for Heavy Ion Research ... - Read More

Today's Antarctic region once as hot as California, Florida

Parts of ancient Antarctica were as warm as today's California coast and polar regions of the southern Pacific Ocean registered 21st century Florida heat according to scientists using a new way to measure past temperatures ... - Read More

Why did humans replace Neanderthals? Paleo diet didn't change, the climate did

Why were Neanderthals replaced by anatomically modern humans around 40 000 years ago One popular hypothesis states that a broader dietary spectrum of modern humans gave them a competitive advantage on Neanderthals Geochemical analyses of ... - Read More

In the lab, scientists coax E. coli to resist radiation damage

Capitalizing on the ability of an organism to evolve in response to punishment from a hostile environment scientists have coaxed the model bacterium Escherichia coli to dramatically resist ionizing radiation and in the process reveal ... - Read More

More accurate data on thousands of years of climate change

Using a cutting edge research technique UCLA researchers have reconstructed the temperature history of a region that plays a major role in determining climate around the world The findings published online Feb 27 in the ... - Read More

Organic chemical origins in hydrothermal systems

Organic, organic, Organic
Serpentinite hosted hydrothermal systems have been suggested as likely sites for the formation of organic compounds in the abiotic conditions of early Earth that is in the absence of living organisms Such compounds were likely ... - Read More

Soil production breaks geologic speed record

Earth, earth
Geologic time is shorthand for slow paced But new measurements from steep mountaintops in New Zealand show that rock can transform into soil more than twice as fast as previously believed possible The findings were ... - Read More

Rethinking massive iceberg shifts in North Atlantic

Some Heinrich events periodic massive iceberg surges into the North Atlantic that were previously thought to have weakened the global ocean conveyor belt circulation and sent Earth's climate into the deep freeze may actually have ... - Read More

Large landmasses existed 2.7 billion years ago

Some 71% of Earth's surface is covered by oceans and 29% by land The question of when large landmasses emerged from the oceans has always been hotly debated by scientists New investigations by geoscientists of ... - Read More

Ways of the photoelectric effect; How physicists have learned how to select them

In contrast to its apparent simplicity that brought Einstein his Nobel Prize the photoelectric effect when an electron is knocked out from its parent atom by a photon is quite complicated to analyze in general ... - Read More

Deep-sea corals record dramatic long-term shift in Pacific Ocean ecosystem

sea
Long lived deep sea corals preserve evidence of a major shift in the open Pacific Ocean ecosystem since around 1850 according to a study by researchers at the University of California Santa Cruz The findings ... - Read More

Noble gas molecule discovered in space

Gas, Space
A molecule containing a noble gas has been discovered in space by a team including astronomers from Cardiff University The find was made using a Cardiff led instrument aboard Europe's Herschel Space Observatory The molecule ... - Read More

NASA Curiosity: First Mars age measurement and human exploration help

Mars, NASA
NASA's Curiosity rover is providing vital insight about Mars' past and current environments that will aid plans for future robotic and human missions In a little more than a year on the Red Planet the ... - Read More
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