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Science News for March 7, 2008


Computers explain why pears may become brown during commercial storage

A computer model developed by researchers at the Catholic University of Leuven can predict the oxygen concentration inside pears, leading to a better understanding of internal browning. The model suggests that extremely low oxygen concentrations in the core of the pear can lead to cell death and browning.

SourcePLOS·JournalPLOS Computational Biology·DateMar 7, 2008

Language of a fly proves surprising

A team of researchers discovered that a common fly's motion-sensitive neurons emit spikes very often and precisely, revealing a more complex language than previously thought. This new understanding challenges traditional assumptions about neural networks and could lead to the development of more efficient artificial intelligence.

SourceDOE/Los Alamos National Laboratory·JournalPLOS Computational Biology·DateMar 7, 2008

Stratospheric ozone chemistry plays an important role for atmospheric airflow patterns

Researchers at the Alfred Wegener Institute found that stratospheric ozone chemistry significantly influences the Arctic Oscillation, leading to changes in atmospheric air flows and temperature distribution. This basic knowledge is crucial for improving climate models and reducing uncertainty in simulated climate developments.

Allergic response tied to lipid molecules in cell membrane

Researchers at Penn State University have discovered that lipid molecules in cell membranes play a key role in triggering allergic reactions. The team used advanced imaging techniques to show how cholesterol-rich lipid domains associate with IgE antibodies and their receptors, leading to histamine release and allergic symptoms.

SourcePenn State·JournalJournal of Biological Chemistry·DateMar 7, 2008

Skewered pumpkins

Researchers developed a pH-sensitive pseudorotaxane nanovalve that can switch between open and closed states. The valve uses cucurbituril molecules to control the flow of guest molecules in porous silica spheres, offering a potential solution for targeted drug delivery.

SourceWiley·DateMar 7, 2008