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Modulated DSC curves. The reversible (top left) curves show most of the melting (endothermic). The non-reversible curves (bottom left) show enthalpic relaxation (endothermic), cold crystallization (exothermic), and some of the melting (endothermic), which all occur around the same temperature. The total (right) curves are a combination of the reversible and non-reversible curves and equivalent with unmodulated DSC.
