Thomas collapse

The precise mechanism of dimethylhydrazine toxicity is uncertain. In addition to the contact irritant effects, the acute effects of dimethylhydrazine exposure may involve the central nervous system as exemplified by tremors and convulsions (Shaffer and Wands 1973) and behavioral changes at sublethal doses (Streman et al. 1969). Back and Thomas (1963) noted that the deaths probably involve respiratory arrest and cardiovascular collapse. The central nervous system as a target is consistent with the delayed latency in response reported for dimethylhydrazine (Back and Thomas 1963). There is some evidence that 1,1-dimethylhydrazine may act as an inhibitor of glutamic acid decarboxylase, thereby adversely affecting the aminobutyric acid shunt, and could explain the latency of central-nervous-system effects (Back and Thomas 1963). Furthermore, vitamin B6 analogues that act as coenzymes in the aminobutyric acid shunt have been shown to be effective antagonists to 1,1-dimethylhydrazine toxicity (reviewed in Back and Thomas 1963). 

Acute surface collapse, known to threaten huntan/animal life directly on occasions (Bell Genskc 2001) can also disrupt surface infrastructure (utilities, highways) and can cause collapse of buildings. Interception of surface waters also possible (Thomas 2002 Younger el al. 2002)... 

L. Thomas. Reversible collapse of rabbit ears after intravenous papain, and prevention of recovery by cortisone. J. Exp. Med. i04 245 (1956). 

Outside of the laboratory, physically frail Thomas was an avid hiker through all weathers. Nothing fazed her. During one night in the Second World War, a bomb dropped near her house, causing the roof to collapse. A policeman forced his way up to her bedroom. He ordered her to get up and leave as the roof was no more, to which she replied I am quite aware of that, but it has fallen, so why should I get up nowT,u(a)... 

It has since been discovered that a more accurate equation, which takes account of radial correlations the g Thomas-Fermi equation, does allow d-orbital collapse to occur. Thus Mayer was actually not far from her objective... 

Collapse of Richard Cromwell s Protectorate and restoration of the Rump Parliament. Bunyan marries his second wife, Elizabeth (three children born of the union). Supposed at this date to have written a tract in support of a woman accusing Quakers of witchcraft. Fiis right to preach is challenged by Thomas Smith, keeper of Cambridge University Library and Professor of Arabic. The... 

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