1,720,988 research outputs found
A new dimension in wood anatomy education: exploring softwood and hardwood structures in 3D
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Surface quantification of the wood-abrasive shell regions of the shipworm Teredo navalis indicates functional differentiation
No full textAbstract Wood-boring shipworms are notorious for their destructive activity, using specialized calcareous valves with denticulate surface ornamentations to bore into wood. While the general morphology of shipworm shells has been well-studied, detailed quantitative analyses of their surface morphometrics and topography have not been undertaken. This exploratory study examined the structural details of the shell surfaces of the shipworm Teredo navalis , focusing on two anterior shell regions involved in wood abrasion: the anterior lobe (AL) and anterior median lobe (AmL). Using 2D and 3D imaging, the ornament morphology and surface topography were analyzed qualitatively and quantitatively. The findings revealed distinct differences in the shape and size of ornamentation between the two shell regions, supporting their functional specialization. Topographic analyses reflected peak-dominated and less abrupt surface textures on the AL, exhibiting considerably greater surface roughness than the valley-dominated surface with steeper peaks on the AmL. These differences indicate functional specialization. The AL resembles a serrated file tool, while the AmL functions as a rasp-like tool, highlighting their roles in different stages of the wood-boring process
Anatomical characteristics of thermally modified Eucalyptus nitens wood in an open and closed reactor system
No full textAnatomical Barriers to Impregnation in Hybrid Poplar: A Comparative Study of Pit Characteristics in Normal and Tension Wood
No full textFast-growing hardwoods like poplar often lack natural durability in outdoor use and require homogeneous impregnation with protective agents, though achieving homogeneity remains a known challenge. Various anatomical structures influence fluid transport in wood. This study compares characteristics of pits in libriform fibres, between ray–vessel interfaces, and between vessel-to-vessel connections in normal wood and tension wood of a hybrid poplar genotype (Populus × canadensis, ‘Gelrica’), including both impregnated (with an aqueous, dye-containing solution) and non-impregnated regions, to identify anatomical barriers to impregnation. Light and scanning electron microscopy revealed significant differences in pit morphology and frequency in libriform fibres between normal wood and tension wood. In non-impregnated regions, pits were often encrusted. Vessel–ray pits did not differ between normal wood and tension wood but showed distinct differences between impregnated and non-impregnated regions: in the latter, pits were occluded by tylose-forming layers. Intervessel pits differed in border and aperture size between earlywood and latewood in both normal wood and tension wood. Hence, fluid transport is strongly impeded by occluded vessel–ray pits and, to a lesser extent, by encrusted fibre pits
Tomographic analysis of siliceous particulates in Australian turpentine wood (Syncarpia glomulifera) through X-ray micro-computed tomography
No full textUse of dry mixing-spraying process for the production of geopolymer-bonded wood and seagrass fibreboards
No full texthttp://dx.doi.org/10.13039/501100001655 Deutscher Akademischer Austauschdiens
Volumetric estimate of bordered pits in Pinus sylvestris based on X-ray tomography and light microscopy imaging
No full textThree-Dimensional Exploration of Soft-Rot Decayed Conifer and Angiosperm Wood by X-Ray Micro-Computed Tomography
No full textMorphological imaging and quantification of axial xylem tissue in Fraxinus excelsior L. through X-ray micro-computed tomography
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