though, is ineffective on inaccessible areas such as the condenser and "dead legs" (dead-ended piping or lumens) in the freeze dryer unit. Completely flooding the freeze dryer is also not effective since air pockets will prevent the liquid from penetrating into many of the same inaccessible are...
In the process of mining and transportation, the temporary non-hardened mine-road structure is mainly a mixture of soil and stone, which very easily produces dust hazards via crushing and wind transportation. Geopolymers can be used in the road’s soil a