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Turbulence around heat transport

07-Dec-2009

Not only in the Earth's mantle, in the atmosphere and in the outer layers of the Sun, but also in a chemical reactor, the exchange of heat may not be as effective as originally thought. There, because warm fluid rises and hence induces movement, the turbulent convection can be 100 billion times ...

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Instantaneous trace gas fingerprint with laser frequency combs

Scientists at the MPQ record ultrasensitive absorption broadband spectra within tens of microseconds by combining cavity enhancement and frequency comb spectroscopy

01-Dec-2009

Trace gas spectroscopic detection has drawn much interest in recent years, as it both allows a better understanding of the molecular spectra of weak overtone transitions and in situ non-intrusive sensing of compounds at low concentration. However, recording a broadband spectrum within a very ...

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Breaking the ties that bind: New hope for biomass fuels

Los Alamos researchers crack code for binding lignocellulosic biomass

24-Apr-2009

Los Alamos National Laboratory researchers have discovered a potential chink in the armor of fibers that make the cell walls of certain inedible plant materials so tough. The insight ultimately could lead to a cost-effective and energy-efficient strategy for turning biomass into alternative ...

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Supra-molecular chemistry yields new materials with outstanding properties

22-Feb-2008

Broken or cracked rubber that can self-heal simply through new contact, ultra-tough bitumen laid at 140°C instead of 180°C, easily-molded plastics with superior mechanical strength and chemical stability, and hotmelt glues from vegetable origin all have one thing in common: they are based on the ...

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