News tagged with concentration

Planting a new perspective on climate research

(Phys.org) —A study on the mechanisms of how plants respond and adapt to elevated levels of carbon dioxide (CO2) and higher temperatures has opened a new perspective in climate research. Lead researcher ...

Aug 02, 2013
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Reconstructing the African humid period

During the end of the last ice age, there were dramatic changes in rainfall across a vast swath of Africa. As the world's large ice sheets receded in northern and southern latitudes, rainfall in much of Africa ...

Dec 05, 2014
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A step closer to composite-based electronics

Composite materials are of increasing interest to physicists. Typically, they are made of electrically conducting elements - such as spherical metallic or elongated carbon particles - embedded in an insulating ...

Nov 25, 2013
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Mercury levels in Hawaiian yellowfin tuna increasing

Mercury concentrations in Hawaiian yellowfin tuna are increasing at a rate of 3.8 percent or more per year, according to a new University of Michigan-led study that suggests rising atmospheric levels of the toxin are to blame.

Feb 02, 2015
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Greenhouse gases linked to African rainfall

Scientists may have solved a long-standing enigma known as the African Humid Period - an intense increase in cumulative rainfall in parts of Africa that began after a long dry spell following the end of the ...

Dec 04, 2014
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Climate control in termite mounds

When they make their way into homes, some species of termites can be destructive pests. Their fungus-harvesting relatives in Africa and Asia, however, are known for their construction prowess, collectively ...

Nov 25, 2014
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