Depression and addiction, for example, have several things in common, including: 1  Loss of interest in once-enjoyable activities. 2  Fatigue. 3  Feelings of hopelessness. 4  Reckless behavior. 5  Irritability.
Deflection Temperature Testing of Plastics. The deflection temperature is a measure of a polymer's ability to bear a given load at elevated temperatures. The deflection temperature is also known as the 'deflection temperature under load' (DTUL), 'heat deflection temperature', or 'heat distortion temperature' (HDT).
1 Latent heat of fusion (Lf): Refers to the heat lost or gained by the air when liquid water changes to ice or vice versa. 2  Lf=333 Joules per gram (J/g) of water or 80 calories per gram (cal/g) of water. 3  Latent heat of sublimation (Ls): Refers to the heat lost or gained by the air when ice changes to vapor or vice versa.