Fig. 9From: Relationship between pore structure and gas permeability in poplar (Populus deltoides CL.’55/65’) tension wood(a) The process of encapsulating a wood sample in a Teflon pipeline with adhesive sealing. (b) Schematic diagram of the homemade air permeability measuring device. (c) Schematic diagram of the homemade nitrogen permeability measuring device. (ID: internal diameter)Back to article page