Thermal Data Fitting with Orthogonal Functions and Combined Table Generation. The FITAB Program

Thermodynamic, Electrochemical and Synthetic Studies of the Graphite- Fluorine Compounds CF and C4F

“…Graphite also exhibits this L.;pe of low temperature behavior (10,11) Tht data was smoothed, extrapolatea co 0 K, and -wed to genprate (12) the thermodynamic functions by means of the FITAB program The smoothed heat capacity and other thermodynami functions at rounded temperatures are presented in Table III. The estimated uncertainity in the entropy at 298.15 K Is 0.15%.…”

Thermodynamic properties of sodalite at temperatures from 15 K to 1000 K

“…After adjustments for the heat capacity of the empty calorimeter, for the differences in masses of Apiezon-T grease, He(g), and (indium+tin) solder between the empty and the loaded calorimeter measurements, and for the curvature of the heat-capacity-against-temperature curve, the resulting heat-capacity values outside the anomaly region were fitted with Tchebycheff orthogonal polynomials to generate thermodynamic functions by a revised version of the FITAB computer program. (28) The super-ambient heat capacity of sodalite was measured with a Perkin-Elmer (Model DSC-2) differential scanning calorimeter (d.s.c.) over the temperature range 340 K to 1000 K. (29) Dissolution of finely divided particles of the sodalite sample in melts of composition 2PbO·B 2 O 3 at T=(97321) K in a high-temperature Setaram Calvet-type twin microcalorimeter was done at the Vernadsky Institute, Russian Academy of Sciences.…”

Thermodynamic properties of two iron silicates. Heat capacities of deerite from the temperature 10 K to 700 K and of grunerite from 10 K to 1000 K

“…After adjustments for the heat capacity of the empty calorimeter, for the differences in quantities of Apiezon-T grease, helium gas, and (indium+tin) solder, between the empty and the loaded calorimeter measurements, and for the curvature of the heat-capacity-against-temperature curves, the results (except in anomalous regions) were fitted with orthogonal polynomial functions to generate thermodynamic functions by a revised version of the FITAB computer program. (30) The super-ambient heat capacities of deerite and grunerite were measured with a Perkin-Elmer differential scanning calorimeter (Model DSC-2). The masses of the d.s.c.…”