“advection” • “c” • “α” • ∂u/∂x • Absorption • Advection • Amplification • Applicable • Applications • Atmospheric • Biological • C∂u/∂x • Chemical • Coefficient • Decay • Diffusion • Does • Due • Dynamics • Engineering • Equation • Field • Flow • Fluid • Form • General • Generation • Given • How • Influence • Limited • Motion • Nonlinear • Optics • Physical • Play • Quantity • Random • Rate • Represent • Represents • Speed • Spreading • Systems • Term • Transfer • Various • Velocity • Which • Βu