The liquefaction of biomass is an important technology to converse the biomass into valuable biofuel. The common technologies for liquefaction of biomass are indirect liquefaction and direct liquefaction. The indirect liquefaction refers to the Fischer−Tropsch (F−T) process using the syngas of biomass as the raw material to produce the liquid fuel. including methyl alcohol. https://www.spidertattooz.com/Civil-Air-Patrol-Patch-National-Emergency-Services-Academy/