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).
Answer Wiki. In heat transfer analysis, thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure.[1] It measures the ability of a material to conduct thermal energy relative to its ability to store thermal energy. It has the SI unit of mÂ²/s.