Daily non-political popular news in brief.
New theory explains enhanced superconductivity in nanowires
10-18-2006 · EurekAlert!Superconducting wires are used in magnetic resonance imaging machines. Eventually, ultra-narrow superconducting wires might be used in power lines designed to carry electrical energy long distances with little loss. Now, researchers at the University of Illinois at Urbana-Champaign not only have discovered an unusual phenomenon in which ultra-narrow wires show enhanced superconductivity when exposed to strong magnetic fields, they also have developed a theory to explain it.
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Keywords: theory, explains, enhanced, superconductivity, nanowires, explain, nanowire
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- Mineral discovery explains Mars' landscape
10-23-2006 · EurekAlert!
A Queen's University researcher has discovered a mineral that could explain the mountainous landscape of Mars, and have implications for NASA's next mission to the planet.
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- Competition, loss of selfishness mark shift to supersociety
06-08-2007 · EurekAlert!
How social or altruistic behavior evolved has been a central and hotly debated question, particularly by those researchers engaged in the study of social insect societies -- ants, bees and wasps. Researchers, including professor Bert Hölldobler of ASU's School of Life Sciences and the Center for Social Dynamics and Complexity, propose a model, based on tug-of-war theory, that may explain the selection pressures that mark the evolutionary transition from primitive society to superorganism.
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- New ORNL theory aims to explain recent temperature, climate extremes
06-12-2007 · Oak Ridge National Laboratory (ORNL)
Using an ocean of data, sophisticated mathematical models and supercomputing resources, researchers at the Department of Energy's Oak Ridge National Laboratory are putting climate models to the test with particular focus on weather extremes.
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- Scientists explain how insulin secreting cells maintain their glucose sensitivity
09-05-2007 · EurekAlert!
Scientists at the leading Swedish medical university Karolinska Institutet have now disclosed the mystery how the insulin-secreting cells maintain an appropriate number of ATP sensing ion channel proteins on their surface. This mechanism, which is described in the latest issue of Cell Metabolism, explains how the human body can keep the blood glucose concentration within the normal range and thereby avoid the development of diabetes.
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- Lesser of two evils: When do we prefer to get rid of things?
10-04-2007 · EurekAlert!
The theory of loss aversion is used in many contexts to explain why potential loss has a greater mitigating influence on behavior than potential gain. In trading situations, consumers will most likely opt to keep what they have, tending to place a larger value on the items already in their possession (also known as the "endowment effect"). However, these theories generally assume that consumers like what they have enough to want to keep it. What happens when we're in possession of something we hate?
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- Theory of oscillations may explain biological mysteries
12-01-2006 · EurekAlert!
An article by John Vandermeer of the University of Michigan shows how extensions of established theory can model coupled oscillations resulting from interactions such as predation and competition. Such coupling can have far-reaching effects that may explain the higher-than-expected diversity of plankton in aquatic ecosystems and other paradoxes of species distribution.
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- Theory predicts aging process in DVDs, plexiglas, other polymer glasses
04-23-2007 · EurekAlert!
Polymer glasses are versatile plastics widely used in applications ranging from aircraft windshields to DVDs. Researchers at the University of Illinois have developed a theory that predicts how these materials age. The theory also explains why motions at the molecular level can have macroscopic consequences.
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- Morphine makes lasting -- and surprising -- change in the brain
04-25-2007 · EurekAlert!
Morphine stops the synapse-strengthening process in the brain known as long-term potentiation at inhibitory synapses, according to new research conducted by Brown University brain scientist Julie Kauer. In Nature, Kauer explains this startlingly persistent effect, which could contribute to addiction and may provide a target for treatments of opioid addiction. The research also supports a provocative theory of addiction as a disease of learning and memory.
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- A study proposes a new universal rule to explain the equilibrium of plant populations
09-18-2007 · EurekAlert!
A study financed by the BBVA Foundation and conducted by scientists Carlos Duarte, Nuria Agustì and Nuria Marbà from the Mediterranean Institute for Advanced Studies (CSIC - University of the Balearic Islands) has allowed the first-time formulation of a universal rule that explains the equilibrium of plant communities, showing how plants assure the survival of their species whether their lives last a day or are prolonged over centuries.
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- Liquid CO2 drives rapid thrust of diamond-bearing structures
05-02-2007 · EurekAlert!
In the May 3 issue of Nature, James Head, a Brown University professor of geology and Lionel Wilson, a professor of volcanology at the University of Lancaster, propose an inte-grated and dramatic mechanism for the formation of kimberlites, the enigmatic structures bearing most of the world’s diamonds. Their theory explains many puzzling features of the formations and also suggests that the location of kimberlites is not related to near-surface geology.
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