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HCN: A plausible source of purines, pyrimidines and amino acids on the primitive earth
SummaryDilute (0.1M) solutions of HCN condense to oligomers at pH 9.2. Hydrolysis of these oligomers yields 4,5-dihydroxypyrimidine, orotic acid, 5-hydroxyuracil, adenine,Expand
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pH profile of the adsorption of nucleotides onto montmorillonite
The effect of adsorbed ions and pH on the adsorption of several purine and pyrimidine nucleotides on montmorillonite was studied. The cations used to prepare homoionic montmorillonite were Na+, Mn2+,Expand
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Ion-exchange separation of nucleic acid constituents by high-performance liquid chromatography.
The high-performance liquid chromatographic separation of a large variety of nucleic acid constituents on a silica-based, weak-anion exchange column was accomplished. Using this technique it wasExpand
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Structural studies on HCN oligomers
SummaryNMR spectral studies on the HCN oligomers suggest the presence of carboxamide and urea groupings. The release of CO2, H2O, HCN, CH3CN, HCONH2 and pyridine on pyrolysis is consistent with theExpand
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The effect of clays on the oligomerization of HCN
SummaryThe reaction of 0.1 M HCN and dilute solutions of diaminomaleonitrile (DAMN) at pH 8–9 and 25°C in the presence of suspensions of montmorillonite (bentonite) clays were investigated.Expand
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Francis Crick and James Watson: And the Building Blocks of Life
The names of James Watson and Francis Crick are bound together forever because the scientific discovery they made was truly a joint enterprise. As Edward Edelson reveals in this intriguing biography,Expand
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Polymers that Conduct Electricity.
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The immune system
-- A complete overview of the health issues that are of vital concern to the public -- Presents up-to-date information on a wide range of topics, from basic anatomy and physiology to ethical andExpand
Computers at the Forge.