1 When the last tube is filling, remove the tourniquet. 2  Remove the needle from the patient's arm using a swift backward motion. 3  Place gauze immediately on the puncture site. 4  Apply and hold adequate pressure to avoid formation of a hematoma.
Thermal Diffusivity. a physical parameter of a substance that characterizes the rate of change of its temperature in transient thermal processes. Thermal diffusivity is a measure of the thermal-inertia properties of a substance. It is numerically equal to the ratio of the substanceâs thermal conductivity and the product of its specific heat (at constant pressure) and density. Thermal diffusivity is expressed in m 2 /sec.
Thermal conductivity 1. Thermal conductivity. In physics, thermal conductivity, is the , property of a material's ability to conduct heat. It appears primarily in. Fourier's Law for heat conduction. Thermal conductivity is measured in watts per kelvin-meter (WÂ·Kâ1Â·mâ1, i.e. W/(KÂ·m) or in IP units (BtuÂ·hrâ1Â·ftâ1Â·Fâ1, i.e. Btu/(hrÂ·ftâF).