“Tour d’azerbaidjan-2017” – First day winners

Today, the International Cycling Union 2.1 categories of national leader Heydar Aliyev, the 94th anniversary of the “Tour d’azerbaidjan-2017” veloturuna launched.

 

rb tv reports that the first day of racing the participants from the State Flag Square, start, taking Baku City Executive Power before the finish crossed the line. 150 km) – the fastest of Israel Pro-continental “Israel Cycling Academy” member of the team Mikel Raim has passed, 3 hours, 4 minutes and 11 seconds.

Continental Latvian “Rietumu Bank-Riga” representative team Emils Liepins and Italian Pro-Continental “Nippo Vini Fantini” club velosipedçisi pier Paolo de Neqri stage with the winner of the same time in terms of signing whatever innovations fotofinişə, mostly 2-3-e places were occupied. Continental Azerbaijan “Synergy Baku” team, all members of the total pelotonda complete caused.

Stage winner Mikel Raim, as well as the General classification leadership and raised, and he is blue “Synergy” köynəyinə received. In addition, Raim intermediate sprintlərində the most points, scoring the best Sprinter intended for green “SOCAR” köynəyinə and the owner came out.

Stage, the best mountain velosipedçisi continental Ukraine “Kolss” team member Vitaliy Buts was it red “AZAL” köynəyinə was awarded. USA Pro continental “Novo Nordisk” the club representative Mehdi Benhamuda, and the best young cyclist, and purple the colors of “ATAHOLDING” shirt with co

Velosipedçiləri of the Cycling Federation of Azerbaijan (AzVIF), Vice-President of the European Cycling Union, Steering Committee member Sahib Alekperov, the European Cyclists Vice-President of the Union Alexander Qusyatnikov and Baku, the head of city Executive Power Zakir Faradzhev awards received. In addition, Zakir Faradzhev stage winner and Azerbaijan “Synergy Baku” team special gifts with pleasure.”

4 may competitions of the 2nd round will be held. This time the participants of the capital Baku Ismayıllıyadək of the 187 km distance will take.

Note that in the “Tour d’azerbaidjan-2017” in competition 18 countries of the 22 team has been fighting.

Continue reading ““Tour d’azerbaidjan-2017” – First day winners”

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DNA of extinct humans found in caves

 

Vindija Cave, CroatiaImage copyrightMPI FOR EVO ANTHRO / J. KRAUSE
Image captionThe remains of Neanderthals had previously been found at Vindija Cave in Croatia

The DNA of extinct humans can be retrieved from sediments in caves – even in the absence of skeletal remains.

Researchers found the genetic material in sediment samples collected from seven archaeological sites.

The remains of ancient humans are often scarce, so the new findings could help scientists learn the identity of inhabitants at sites where only artefacts have been found.

The results are described in Science.

Antonio Rosas, a scientist at Spain’s Natural Science Museum in Madrid, said: “This work represents an enormous scientific breakthrough.

“We can now tell which species of hominid occupied a cave and on which particular stratigraphic level, even when no bone or skeletal remains are present.”

InfographicImage copyrightSCIENCE
Image captionThe researchers also found the DNA of many animals – some of them extinct

“We know that several components of sediments can bind DNA,” said lead researcher Matthias Meyer of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany.

“We therefore decided to investigate whether hominin DNA may survive in sediments at archaeological sites known to have been occupied by ancient hominins.”

The team collaborated with researchers excavating at seven dig sites in Belgium, Croatia, France, Russia and Spain.

They collected sediment samples covering a time span from 14,000 to 550,000 years ago.

El Sidrón, SpainImage copyrightMAX-PLANCK-GESELLSCHAFT
Image captionNeanderthal DNA was retrieved from sediments in El Sidrón cave, northern Spain

Back in the lab, they fished out tiny fragments of mitochondrial DNA (mtDNA) – genetic material from the mitochondria, which act as the “powerhouses” of biological cells. Even sediment samples that had been stored at room temperature for years yielded DNA.

Dr Meyer and his team members were able to identify the DNA of various animals belonging to 12 mammalian families, including extinct species such as the woolly mammoth, woolly rhinoceros, cave bear and cave hyena.

The scientists looked specifically for DNA from ancient humans in the samples.

“From the preliminary results, we suspected that in most of our samples, DNA from other mammals was too abundant to detect small traces of human DNA,” said co-author Viviane Slon, from the Max Planck Institute in Leipzig, Germany.

“We then switched strategies and started targeting specifically DNA fragments of human origin.”

Sediment sampleImage copyrightMAX-PLANCK-GESELLSCHAFT
Image captionDNA can be extracted even when the sediments have been stored at room temperature

The team members managed to retrieve DNA from Neanderthals in the cave sediments of four archaeological sites, including in layers where no human skeletal remains have been discovered.

In addition, they found new samples of Denisovan DNA in sediments from Denisova Cave in Russia.

“The technique could increase the sample size of the Neanderthal and Denisovan mitochondrial genomes, which until now were limited by the number of preserved remains,” co-author Spanish National Research Council scientist Carles Lalueza-Fox told the AFP news agency.

“And it will probably be possible to even recover substantial parts of nuclear genomes.”

Svante Pääbo, director of the Evolutionary Genetics department at the Max Planck Institute for Evolutionary Anthropology, commented: “By retrieving hominin DNA from sediments, we can detect the presence of hominin groups at sites and in areas where this cannot be achieved with other methods.

“This shows that DNA analyses of sediments are a very useful archaeological procedure, which may become routine in the future.”