HIV, syphilis and hepatitis. The Centers for Disease Control and Prevention (CDC) encourages HIV testing, at least once, as a routine part of medical care if you're an adolescent or adult between the ages of 15 and 65. Younger teens should be tested if they have a high risk of an STI.
thermal conductivity. (General Physics) a measure of the ability of a substance to conduct heat, determined by the rate of heat flow normally through an area in the substance divided by the area and by minus the component of the temperature gradient in the direction of flow: measured in watts per metre per kelvin.
Thermal conduction is the transfer of heat (internal energy) by microscopic collisions of particles and movement of electrons within a body.