A two-part implantable cardiac pacing lead is usable with a cardiac function management device. The fourth specifically exemplified phenolic acid esterase is a protein encoded within the genome of Orpinomyces PC-2. The sides of the frame each are formed with an inwardly curved recess. In the first step, the method uses Principal Component Analysis as a preprocessing step, and the Principal Components are then used to derive sat and the Independent Components, where the Independent Components are determined in a second step. The method steps include monitoring reflected atmospheric and thermal radiation, detecting the presence of hydrocarbons, and generating an alert based on the presence of hydrocarbons.