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Science News for July 22, 2007


Nicotine rush hinges on sugar in neurons

A University of Southern California study reveals that sugar molecules attached to the surface of the receptor act as a hinge, opening a gate in the cell membrane and transmitting news of nicotine's arrival. The research also identifies a water molecule deep in the receptor's core, which may enable the receptor to alter its shape.

SourceUniversity of Southern California·JournalNature Neuroscience·DateJul 22, 2007

A novel molecular dictator 'with a conscience' discovered

UNSW researchers have uncovered a naturally occurring mechanism to control 'bad' cells causing blood vessel blockages while leaving 'good' cells unaffected. This discovery could benefit those undergoing heart surgery or haemodialysis by targeting specific gene suppressors like YY1.

SourceUniversity of New South Wales·JournalCirculation Research·DateJul 22, 2007

Tightly packed molecules lend unexpected strength to nanothin sheet of material

Researchers at the University of Chicago and Argonne National Laboratory have created a nanothin sheet of nanoparticles that boasts surprising strength, rivalling that of an ultrathin sheet of plexiglass. The material's characteristics make it a promising candidate for use in pressure sensors and chemical filters.

SourceUniversity of Chicago·JournalNature Materials·DateJul 22, 2007
DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Bending polymers provides spontaneous way to duplicate beauty of nature

Scientists at Hebrew University of Jerusalem Racah Institute of Physics have developed a way to program polymer sheets to bend and wrinkle into prescribed structures. By varying the local polymer density, the gel shrinks at specific temperatures, causing it to buckle and change shape.

SourceThe Hebrew University of Jerusalem·JournalScience·DateJul 22, 2007