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Earth Sciences Mar 8, 2010

Deep sedimentation of acantharian cysts -- a reproductive strategy?

Spore-like reproductive cysts of enigmatic organisms called acantharians rapidly sink from surface waters to the deep ocean in certain regions, according to new research. Scientists suspect that this is part of an extraordinary ...

Materials Science Dec 21, 2009

Dental delight! Tooth of sea urchin shows formation of biominerals

(PhysOrg.com) -- Some of the most common minerals in biology, including those in bones and shells, have a mysterious structure: Their crystals are positioned in the same orientation, making them behave as one giant crystal, ...

Nanophysics Dec 16, 2009

Watching Proteins Direct Crystal Growth One Step at a Time (w/ Video)

(PhysOrg.com) -- Scientists at Berkeley Lab's Molecular Foundry imaged the growth of protein-studded mineral surfaces with unprecedented resolution and provided a glimpse into how living systems engineer key structural materials. ...

Other Dec 4, 2009

Nature's fine designs: Scientists find modern lessons in ancient creations

(PhysOrg.com) -- Nature and its bottom-up processes for creating robust and responsive materials are inspiring new generations of synthetic materials and creative design.

Biochemistry Dec 1, 2009

All decked out: Networks of chitin filaments are integral components of diatom silica shells

(PhysOrg.com) -- A whole microcosm of various bizarrely shaped life forms opens up when you look at diatoms, the primary component of ocean plankton, under a microscope. The regularly structured silica shells of these tiny ...

Bio & Medicine Nov 23, 2009

Peptides control crystal growth with 'switches, throttles and brakes'

(PhysOrg.com) -- By producing some of the highest resolution images of peptides attaching to mineral surfaces, scientists have a deeper understanding how biomolecules manipulate the growth crystals. This research may lead ...

Biochemistry Nov 3, 2009

Yeast in a shell: Coating individual living yeast cells with silicon dioxide

(PhysOrg.com) -- Our breakfast egg is a peculiarity of nature: a single cell protected by a thin mineral layer. Apart from a number of tiny radiolaria and diatoms, individual cells normally do not have a hard shell. Korean ...

Condensed Matter Oct 7, 2009

Bacterium helps formation of gold

Australian scientists have found that the bacterium Cupriavidus metallidurans catalyses the biomineralisation of gold by transforming toxic gold compounds to their metallic form using active cellular mechanism.

Materials Science Jul 8, 2009

2000-year-old statue of an athlete sheds light on corrosion, other modern challenges

The restoration of a 2,000-year-old bronze sculpture of the famed ancient Greek athlete Apoxyomenos may help modern scientists understand how to prevent metal corrosion, discover the safest ways to permanently store nuclear ...

Bio & Medicine May 14, 2009

Focus on the formation of bones, teeth and shells

Researchers at Eindhoven University of Technology for the first time have shown the earliest stages in biomineralization, the process that leads to the formation of bones, teeth and sea shells.

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