By Daniel Cressey of Nature magazine About one-quarter of seafood sold as `sustainable' is not meeting that goal, according to an analysis taking aim at the two leading bodies that grant this valuable label to fisheries. In an online paper in Marine Policy and at a conference this week in Edinburgh, UK, fisheries biologist Rainer Froese of the Helmholtz Centre for Ocean Research in Kiel, Germany, launched a stinging attack on the schemes by the Marine Stewardship Council (MSC) and the marine-conservation organization Friend of the Sea (FOS) to certify fisheries as sustainable. [More]
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Feed SubscriptionResetting the future of MRAM
In close collaboration with colleagues from Bochum, Germany, and the Netherlands, researchers from the Helmholtz-Zentrum Berlin, Germany, have developed a novel, extremely thin structure made of various magnetic materials.
Read More »Laser heating — new light cast on electrons heated to several billion degrees
A new class of high power lasers can effectively accelerate particles like electrons and ions with very intense, short laser pulses. This has attracted the interest of researchers around the globe, working out the details of the acceleration process which occurs when a laser beam impinges on a thin foil to accelerate ions from the foil's rear surface to high energies. The electrons in the foil are heated by the laser pulse, thereby gaining energy
Read More »World record: The strongest magnetic fields created
On June 22, 2011, the Helmholtz-Zentrum Dresden-Rossendorf set a new world record for magnetic fields with 91.4 teslas. To reach this record, Sergei Zherlitsyn and his colleagues at the High Magnetic Field Laboratory Dresden (HLD) developed a coil weighing about 200 kilograms in which electric current create the giant magnetic field for a period of a few milliseconds
Read More »Magnetic properties of a single proton directly observed for the first time
German researchers at Johannes Gutenberg University Mainz (JGU) and the Helmholtz Institute Mainz (HIM), together with their colleagues from the Max Planck Institute for Nuclear Physics in Heidelberg and the GSI Helmholtz Center for Heavy Ion Research in Darmstadt, have observed spin quantum-jumps with a single trapped proton for the first time. The fact that they have managed to procure this elusive data means that they have overtaken their research competitors at the elite Harvard University and are now the global leaders in this field.
Read More »Ferromagnetism plus superconductivity
It seems impossible: Scientists from the Helmholtz-Zentrum Dresden-Rossendorf and the TU Dresden (Germany) were able to verify with an intermetallic compound of bismuth and nickel that certain materials actually exhibit the two contrary properties of superconductivity and ferromagnetism at the same time.
Read More »Mini disks for data storage: Slanted edges favor tiny magnetic vortices
Slanted exterior edges on tiny magnetic disks could lead to a breakthrough in data processing. Materials researchers of the Helmholtz-Zentrum Dresden-Rossendorf, Germany, were able to create magnetic vortices with a diameter of only one third of a thousandth of a millimeter - structures which were impossible in the past.
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