While examining the flight behavior of flesh flies, Cornell University entomologists have discovered that males of the species (Sarcophagidae: Neobellieria bullata ) -- traveling at very high speed, soaring in sexual pursuit and swiveling their heads like gun turrets -- literally can lose sight of a target female. Yet the males compensate for the momentary loss of vision and still catch up to mate.
A detailed explanation of this quirk in vision physiology and neurological processing could help military and aerospace engineers to build aircraft and artillery that have improved detection of evasive targets.
"This fly has a very small brain, but it moves at relatively fast speeds, over 2 meters per second. The male flesh fly is very successful at chasing and catching the female even without an elaborate, high-powered onboard computer. Our study is the first to determine that chasers, indeed, radically move their heads while in pursuit, which means that they may be aiming the high-resolution part of their eye at the female," said Cole Gilbert, Cornell University professor of entomology. He is presenting this research today Nov. 10, at the Society for Neuroscience meeting at the Ernest N. Morial Convention Center in New Orleans. Gilberts poster presentation is titled "View from the cockpit of a fly: visual guidance of sexual aerial pursuit in male flesh flies."
Blaine P. Friedlander Jr. | Cornell News
Single-stranded DNA and RNA origami go live
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New antbird species discovered in Peru by LSU ornithologists
15.12.2017 | Louisiana State University
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
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MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
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Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
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