The element of uncertainty
Article Abstract:
Several research projects have addressed the question of what occurs when a box containing an equal number of electrons and protons is compressed. It has been possible to confirm earlier work indicating that rotational order in phase III, a higher-temperature phase, is mainly classical, while rotational order in phase II, a low-temperature, high-pressure phase, is purely quantum mechanical. Other research tackled the issue of band overlap in hydrogen, while a third project simulated the high-pressure phase of H2 in an attempt to reproduce in detail the observations from vibrational spectroscopy experiments, which offer indirect data on structure and symmetry.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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Preserving tardigrades under pressure
Article Abstract:
DNA and cellular membranes can be damaged by the application of high hydrostatic pressure to animals, and this can result in the death of multicellular organisms and bacteria. Tardigrades are small terrestrial creatures which are able to survive great pressure These animals shrink and become immobile in a state called 'tun' when there is a drop in humidity levels. The pressure medium used was perfluorocarbon instead of water, and this meant that the tardigrades could not become rehydrated under compression.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Site-ordering effects on element partitioning during rapid solidification of alloys
Article Abstract:
The rapid solidification of the intermetallic compound NiAl produces inverted partitioning due to the energetic effects of site ordering in the solidifying phase. The rapid growth of the alloy increases partitioning in NiAl. At certain conditions, a zero-partitioning point is present which can be utilized to produce alloys where partitioning is a problem. An increase in partitioning due to rapid cooling may be a source of problems in welding and surface treatment on alloys.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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