A transportable building unit, and a method for constructing the same, which has sufficient strength to resist bending and other forces that otherwise may cause damage during transport, as well as a transportation system and method for transportable building units. Within 4 days and without agitation, the solution was used to convert poplar wood sections into a fine powder-like delignified, cellulose rich materials that included individual wood cells. Each batch of one or more non-synchronization tasks includes a next consecutive set of non-synchronization tasks drawn from a source of non-synchronization tasks that is common to the replication processing threads included in the plurality of replication processing threads. A radially inner end of the brush contacts the pulverizer yoke and a radially outer end is connected to the adjusting segment. During formation of the second polysilicon patterns, a dielectric film and exposed regions of the first polysilicon patterns can be etched to form floating gates below the second polysilicon patterns.