Salt lake in Southern Russia
Micro-organisms in salt lakes produce chlorinated air pollutants
Salt lakes have a greater impact on climate change than was previously understood. This has been established by scientists from the UFZ Centre for Environmental Research (Umweltforschungszentrum Leipzig-Halle) together with colleagues from Austria, Russia and South Africa. They found evidence that bacteria in salt lakes produce substances which act as greenhouse gases and destroy the ozone layer. These substances are known as volatile halogenated hydrocarbons (VHHs). These spread world-wide through the atmosphere and also damage vegetation.
Scientists previously assumed that VHHs were produced almost exclusively through industrial processes. However, when the pollutant flows in southern Russia were analysed, it was found that there must be natural sources in addition to the industrial ones. This was indicated by increased concentrations of VHH degradation products, which were recorded by scientists in Antarctic ice some years ago. The ice examined was over 250 years old and dates from the pre-industrial age. A search for natural sources of VHHs by an international research group led by Dr Ludwig Weißflog of the UFZ succeeded for the first time in finding evidence of some of these compounds being formed naturally by salt-loving micro-organisms in salt lakes.
Doris Boehme | alfa
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University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
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Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
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Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
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Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
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20.10.2017 | Interdisciplinary Research