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Theories that incorporate the area-preserving rule of Leonardo da Vinci predict that the sum of the cross-sectional lumen area of xylem conduits (vessels or tracheids) is constant across different levels of branching. If true, this rule obtains the packing rule, according to which (1) vessel cross-sectional lumen area (A) will negatively and isometrically scale to vessel number per unit area (N) and...
The effects of temperature and water content on the viscoelasticity of living and dehydrated Tilia americana sapwood were examined using transient creep (time- and load-dependent deformation) tests under sustained bending loads. Creep tests were performed at 21.1C and 20.5C to determine the magnitudes and types of strains in living and dehydrated samples. Temperature had no effect on the creep rate...
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