Average insect brain should help spot defects and their causes.
A creature of little brain, the fruit fly is popular with geneticists
Two hairs breadths long and five across - thats the average capacity of a flys brain, German researchers have calculated. They hope to set a benchmark for crania by which oddballs can be judged.
Although it is a creature of little brain, the fruit fly (Drosophila) is popular with geneticists. Researchers often study flies that lack a particular gene, looking for flaws that might hint at the genes function in the body.
Efforts to gauge the average human brain are taking a similar tack, says John Mazziotta of the University of California, Los Angeles, who heads the International Consortium for Brain Mapping.
Using magnetic-resonance imaging (MRI) pictures collected from nearly 7,000 people, the team hopes to define a human reference brain. This could be compared to patients with Alzheimers disease or stroke to pinpoint brain regions that are affected. The human standard is set to be completed by September 2003.
"Wed like to have such a reference brain," says Robert Brandt of the Free University of Berlin, who is compiling an equivalent for bees.
HELEN PEARSON | © Nature News Service
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At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.
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Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.
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University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
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Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
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