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Put algae in your tank

Novel LED technology enables detailed investigation of algae productivity

17-12-2014

Because food crops are also used for energy production, millions of people are threatened by starvation. Algae could provide an alternative: They only need sunlight to grow, thrive in salty water on barren fields. But it is a major challenge to exactly reproduce sunlight in the laboratory. In ...

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Filming chemistry with a high speed x-ray camera

Chemistry happens all around us. A chemical reaction is a rearrangement of atoms in and between molecules, the breaking of old and the formation of new bonds. The glue that binds atoms in molecules an

09-12-2014

Chemistry happens all around us. A chemical reaction is a rearrangement of atoms in and between molecules, the breaking of old and the formation of new bonds. The glue that binds atoms in molecules and creates the bonds between them is made out of valence electrons. Scientists of the ...

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New research paves the way for nano-movies of biomolecules

Scientists use X-ray laser as ultra slow-motion camera

08-12-2014

An international team, including scientists from DESY, has caught a light sensitive biomolecule at work with an X-ray laser. The study proves that X-ray lasers can capture the fast dynamics of biomolecules in ultra slow-motion, as the scientists led by Prof. Marius Schmidt from the University of ...

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Characterization of X-ray flashes open new perspectives in X-ray science

Ultra-short X-ray pulses explore the nano world

01-12-2014

Ultra-short and extremely strong X-ray flashes, as produced by free-electron lasers, are opening the door to a hitherto unknown world. Scientists are using these flashes to take “snapshots” of the geometry of tiniest structures, for example the arrangement of atoms in molecules. To improve not ...

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Scanning Tunnelling Microscopy: Computer Simulations Sharpen Insights into Molecules

01-12-2014

The resolution of scanning tunnelling microscopes can be improved dramatically by attaching small molecules or atoms to their tip. The resulting images were the first to show the geometric structure of molecules and have generated a lot of interest among scientists over the last few years. ...

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Magnetic fields and lasers elicit graphene secret

HZDR scientists discover extraordinarily strong electron redistribution in graphene

26-11-2014

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) have studied the dynamics of electrons from the "wonder material" graphene in a magnetic field for the first time. This led to the discovery of a seemingly paradoxical phenomenon in the material. Its understanding could make a new type ...

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Major class of fracking chemicals no more toxic than common household substances

18-11-2014

The "surfactant" chemicals found in samples of fracking fluid collected in five states were no more toxic than substances commonly found in homes, according to a first-of-its-kind analysis by researchers at the University of Colorado Boulder. Fracking fluid is largely comprised of water and sand, ...

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Towards future lab-on-chip applications

14-11-2014

Smart and portable medical equipment is essential for fast and easy point-of-care and point-of-use diagnostics. Lab-on-a-chip applications in hand-held devices can help to save time for laboratory medical analysis in emergency scenarios. The combination of sub-micrometer-thick light emitting ...

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Mapping the spread of diarrhoea bacteria a major step towards new vaccine

13-11-2014

Every year hundreds of thousands of people die from diarrhoeal diseases caused by ETEC bacteria. A study published in Nature Genetics describes how Swedish researchers have mapped the spread of strains of ETEC bacteria around the world. It provides key information about how pathogenic bacteria ...

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Pathogens in foods: progress and challenges

Third BfR symposium on "Zoonoses and Food Safety"

11-11-2014

Pathogens such as salmonella, campylobacter and viruses found in and on food pose a health risk. "Contamination of food with pathogens must be avoided to the greatest extent possible", says Professor Dr. Dr. Andreas Hensel, President of the Federal Institute for Risk Assessment (BfR). "This rule ...

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