IODP team succeeds in recovering sub-seafloor sample
The first 40 million years of Arctic climate history have been recovered from beneath the Arctic seafloor this week. After four days of working in hazardous conditions, the Integrated Ocean Drilling Programs (IODP) Arctic Coring Expedition (ACEX) retrieved 272 meters of core. Extreme sea ice then forced the ship to abandon its position.
Coring of the Arctics first scientific borehole--located roughly 145 miles (233 kilometres) from the North Pole--was interrupted when very thick, moving ice floes threatened the expeditions safety. Even one of the worlds most powerful ice breakers, the Russian Sovetskiy Soyuz, employed to protect the coring ship from harsh Arctic elements, could not safeguard operations at the initial coring site.
As the expedition team searches for another favorable site from which to core, scientists on board the Vidar Viking have examined microfossils in the retrieved core. Initial analyses suggest that some of the material in the cores sediments could be 40 million years old--originating in the Middle Eocene period. The expeditions co-chief scientist, Professor Jan Backman of the University of Stockholm, exclaims, "This is very exciting. For the first time, we are beginning to get information about the history of ice in the central Arctic Ocean." He adds, "This core goes back to a time when there was no ice on the planet--it was too warm. It will tell us a great deal about the climate of the region. It will tell us when it changed from hot to cold, and hopefully, why." Prof. Backman explains that in prehistoric times, life in the Arctic Ocean was much different than today. In warmer conditions and free from ice, marine life thrived. The retrieved Arctic sediments will indicate the type and abundance of marine creatures that lived here back then. The cores were raised from sea depths of about 600 meters, coring depths formerly unmatched in Arctic waters.
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18.05.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
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16.05.2017 | International Institute for Applied Systems Analysis (IIASA)
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy