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A new stable substrate applicable to the observation of DNA molecules by atomic force microscopy (AFM) was fabricated from a ultrasmooth sapphire (α-Al2O3 single crystal) plate. The atomically ultrasmooth sapphire as obtained by high-temperature annealing has hydrophobic surfaces and could not be used for the AFM observation of DNA. However, sapphire treated with Na3PO4 aqueous solution exhibited...
An estimate of the amount of information transmitted by way of the arterial blood stream in animals is made. Many assumptions are necessary to pose the problem in analyzable form. Taking carbon dioxide as a representative substance, a distribution of maximum entropy is developed. Three points emerge: (1) that homeostatic stability can be related to chemoreceptor sensitivity if both are given statistical...
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