A circuit board has a top face for positioning an electronic component and a bottom face used as a support on a heat-dissipating base. The pump directly pressurizes a fluid. A virtual EGR rate is obtained from the intake air flow rate, the fuel flow rate and the virtual EGR gas flow rate, and a difference from or a ratio to a target EGR rate obtained from the engine speed and the fuel flow rate is obtained. A light shows a specific color after passing through the gate insulator. The invention further relates to a process for preparing such metallic effect pigments, and to their use. Specifically, the invention provides amine compounds, methods for synthesizing amine compounds, and methods for inhibiting neurotransmitter reuptake.