The social and cultural background of the Iceman, dubbed Oetzi, has been the subject of much debate since his mummified remains were discovered in an Alpine glacier in 1991. Although his clothes were known to be made of animal skins, their exact origin was uncertain. This new study focuses on hair samples taken from Oetzi's coat, leggings and moccasin shoes.
“We found that the hairs came from sheep and cattle, just the types of animals that herdsmen care for during their seasonal migrations,” says lead researcher Klaus Hollemeyer of Saarland University in Germany.
The researchers analysed hair samples in excess of 5,000 years old using MALDITOF mass spectrometry. This allowed them to study patterns of peptides of fermented proteins present in the ancient hair and compare them with those of modern day animals. They found that Oetzi's coat and leggings were made from sheep's fur, whilst his moccasins were of cattle origin.
The researchers believe that MALDITOF mass spectrometry may be faster and more reliable than methods based on DNA analysis and that it could be applied in archaeology and evolutionary biology.
“This method could, for example, be used in checking the purity of products made from animal hair, such as pullovers and jackets made of Cashmere wool,” says Hollemeyer. “I think that a major field of application will be to help manufacturers abide by the European Union law concerning the ban of dog and cat fur trade next year.”
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17.11.2017 | University of North Carolina Health Care
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The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
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17.11.2017 | Physics and Astronomy
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17.11.2017 | Studies and Analyses