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Johannes Gutenberg Universitaet Mainz


Ant societies' arms race: Gene activity in defenders depends on invading slavemaking ants

Gene activity in defenders reflects origin of attacking slavemakers, with successful invaders triggering weaker defenses. Researchers found that host ants react aggressively to rare slave-makers and not to common ones, highlighting the complex co-evolutionary relationship between parasites and their hosts.

SourceJohannes Gutenberg Universitaet Mainz·JournalPhilosophical Transactions of the Royal Society of London (B )·DateFeb 28, 2019

Earth's magnetic field measured using artificial stars at 90 kilometers altitude

Researchers have successfully measured the Earth's magnetic field in the sodium layer of the mesosphere using laser-generated artificial stars. This technique allows for ground-based observations of the mesosphere, previously difficult to access, and holds promise for monitoring space weather and measuring electrical currents.

SourceJohannes Gutenberg Universitaet Mainz·JournalNature Communications·DateNov 14, 2018

Magnetization in small components can now be filmed in the laboratory

Scientists at Johannes Gutenberg University Mainz developed a technique to visualize and film the high-speed switching processes of tiny magnetic structures. This method enables researchers to investigate magnetization behavior with sub-nanosecond time resolution, opening up new possibilities for optimizing magnetic components.

SourceJohannes Gutenberg Universitaet Mainz·JournalReview of Scientific Instruments·DateSep 11, 2018

Detecting damage in non-magnetic steel with the help of magnetism

Scientists from JGU and the University of Kaiserslautern have developed a process to apply a thin magnetic layer to steel, allowing for the detection of microstructural changes by changes in magnetic effects. This method has the advantage of detecting signs of fatigue much earlier than conventional testing procedures.

SourceJohannes Gutenberg Universitaet Mainz·JournalJournal of Magnetism and Magnetic Materials·DateJul 23, 2018

Noise throws the heart out of rhythm

A recent study published in International Journal of Cardiology found that exposure to extreme noise annoyance increases the incidence of atrial fibrillation by up to 23%. Aircraft noise is identified as a major source of noise pollution, with 84% during the day and 69% at night. The study highlights the importance of measuring noise a...

SourceJohannes Gutenberg Universitaet Mainz·JournalInternational Journal of Cardiology·DateMay 3, 2018