Triple point constants elements

The test element was connected in series with an NBS calibrated 0.1-ohm standard resistor, and with a stabilized battery. The resistances were compared, by standard techniques with a measuring current of approximately 0.1 amp, at various temperatures as measured with the bulk liquid thermocouple in the same bath. At these low currents (heat transfer measurement currents ranged from about 5 to 50 amp) the bath temperature could be maintained constant at any desired value to within 0.05 for an indefinite period of time, and the temperature difference between the buUc liquid and the test element was insignificant. Thus the resistance of the test element was determined in terms of the emf of the thermocouple used to measure the bulk liquid temperature over the range from the triple point of N2 (63.16T<) to 150°K. 

Figures 5 to 8 show projections of the Point-Molecule representation for Cu(II)-P-diketones quelate compounds, on the plane of two principal components for the Cioslowski-like, Coulomb-like, overlap-like and triple density similarity measure matrices, respectively. As before, the figures represent two-dimensional projections of 10-dimensional polyhedrons and the elements of the set are divided in two classes, depending on their respective extraction constant (K ). We can see that the most active compounds (represented by circles) can be shown split from the less active ones (represented by squares).

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