The present invention provides methods of detecting cancer cells in a patient. The channel region is located in a surface of a substrate and between a source and a drain in the substrate. The system also includes a thru beam sensor. For installation in accordance with the installation configuration option in a normal operating environment, a current value of each of the timing parameters of the predetermined install time calculation expression for the installation configuration option. In another embodiment, there is a predetermined delay after the compressor is turned on and off before the evaporator is respectively turned on and off. Soldering flux compositions include certain fluorine containing compounds found to reduce the undesirable formation of flux tank precipitates and staining of soldered products.