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. 2020 Jul 1;5(27):16460–16469. doi: 10.1021/acsomega.0c00769

Table 3. Results and Errors of the Herschel–Bulkley Approximation for Emulsions X2 and X4 at Certain Temperatures.

sample X2 (25 vol % H2O) X4 (40 vol % H2O)
temperature, °C 10 30 50 10 30 50
σY, Pa 4.94 1.49 1.25 0.61 0.39 0.18
K 8.06 2.87 1.85 0.21 0.10 0.06
n 0.53 0.61 0.64 0.95 0.92 0.88
reduced χ2a 0.138 0.622 0.417 0.049 0.088 0.002
R2 (COD)b 0.998 0.991 0.991 0.999 0.999 0.999
a

The reduced χ2 value is equal to the residual sum of square divided by the degree of freedom. A reduced χ2 value close to 1 indicates a good fit result.

b

The coefficient of determination (COD) is a statistical measure to qualify the regression.