Bama soils are classified in USDA soil taxonomy as fine-loamy, siliceous, subactive, thermic Typic Paleudults. Rising insulin levels after eating may be responsible for diet-induced thermogenesis (thermic effect of food). A locomotive boiler with a wide firebox may have arch tubes or thermic syphons. Silicone oils are primarily used as lubricants, thermic fluid oils or hydraulic fluids. The firebox was modified by adding thermic syphons and a combustion chamber. It is supported on arch tubes, thermic syphons, or circulators. Other technical features included bar frames and thermic syphons. The Belpaire firebox had a Nicholson thermic syphon; with a long and narrow grate. The oceanic climate gives the province an intense green colour with little thermic oscillation. They thus act as a form of thermic syphon. It had Thermic siphon and arch tubes for better performance. Basically they used the thermic alteration or firesetting (Mohen 1992, Craddock 1995, Eiroa et al.