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Table 3 The enthalpy changes in the heating (∆H1) and cooling (H2) processes

From: Differential scanning calorimetric investigations of three rotary nickel-titanium instrument systems before and after simulated clinical uses

Subgroups ∆H1 (J/g) ∆H2 (J/g)
Segments
A B C D A B C D
Mean ± Standard deviation
1.1 1.51 ± 0.13 1.68 ± 0.13 1.31 ± 0.21 1.67 ± 0.11 1.00 ± 0.23 1.20 ± 0.15 1.28 ± 0.12 1.37 ± 0.12
1.2 1.42 ± 0.11 1.34 ± 0.13 1.33 ± 0.14 1.52 ± 0.13 0.79 ± 0.19 1.01 ± 0.12 1.15 ± 0.17 1.22 ± 0.11
1.3 0.96 ± 0.22 0.96 ± 0.37 1.10 ± 0.29 1.39 ± 0.14 0.63 ± 0.13 0.94 ± 0.13 1.05 ± 0.22 1.19 ± 0.13
2.1 3.74 ± 0.32 4.88 ± 0.31 4.25 ± 0.52 3.72 ± 0.18 1.68 ± 0.25 2.98 ± 0.40 3.44 ± 0.29 3.45 ± 0.13
2.2 0.85 ± 0.15 5.81 ± 0.81 5.18 ± 0.48 4.06 ± 0.15 0.48 ± 0.33 2.97 ± 0.93 3.54 ± 0.33 3.53 ± 0.20
2.3 0.76 ± 0.13 4.36 ± 0.17 4.32 ± 0.10 3.79 ± 0.08 0.40 ± 0.26 2.29 ± 0.51 3.59 ± 0.33 3.41 ± 0.20
3.1 6.58 ± 0.95 7.76 ± 0.65 7.53 ± 1.49 6.26 ± 0.46 2.40 ± 0.37 4.19 ± 0.23 4.54 ± 0.18 4.64 ± 0.20
3.2 6.61 ± 0.49 7.70 ± 1.06 7.65 ± 1.54 6.45 ± 0.69 2.34 ± 0.32 3.99 ± 0.22 4.36 ± 0.22 4.66 ± 0.27
3.3 6.27 ± 0.70 7.71 ± 0.80 7.11 ± 1.06 6.06 ± 0.62 2.08 ± 0.52 3.97 ± 0.21 4.44 ± 0.36 4.65 ± 0.29