Identification of the Economic Woods of the United States: Including a Discussion of the Structural and Physical Properties of WoodWiley, 1919 - Broj stranica: 157 |
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Rezultati 1 - 5 od 34.
Stranica
... 38 " Ripple marks " 39 Growth rings . 40 Heartwood and sapwood 44 Grain and texture 46 Knots 48 Density and weight 49 Water content of wood 52 Shrinkage , warping , and checking Hygroscopicity Permeability Conductivity • 111.
... 38 " Ripple marks " 39 Growth rings . 40 Heartwood and sapwood 44 Grain and texture 46 Knots 48 Density and weight 49 Water content of wood 52 Shrinkage , warping , and checking Hygroscopicity Permeability Conductivity • 111.
Stranica 5
... On the outside is bark . Between these two and making up the bulk of the structure is the wood or xylem . The wood , particularly in old sections , usually shows a central colored portion , the heartwood , and a nearly colorless 5 General.
... On the outside is bark . Between these two and making up the bulk of the structure is the wood or xylem . The wood , particularly in old sections , usually shows a central colored portion , the heartwood , and a nearly colorless 5 General.
Stranica 6
... heartwood , and a nearly colorless outer border , the sapwood . In fresh - cut green sections the sapwood is further differentiated by its greater moisture content . Indigenous arborescent plants are readily separable into two S.W b ...
... heartwood , and a nearly colorless outer border , the sapwood . In fresh - cut green sections the sapwood is further differentiated by its greater moisture content . Indigenous arborescent plants are readily separable into two S.W b ...
Stranica 15
... heartwood of certain species ( e.g. , Gymnocladus , Gleditsia , Guaiacum , Prosopis ) they become wholly or partly filled with gums or resins ; in others , with carbonate of lime . The length of vessels is usually very great , and ...
... heartwood of certain species ( e.g. , Gymnocladus , Gleditsia , Guaiacum , Prosopis ) they become wholly or partly filled with gums or resins ; in others , with carbonate of lime . The length of vessels is usually very great , and ...
Stranica 36
... heartwood impervious , or nearly so , to the entrance of fluids . Tyloses are especially abundant in the vessels of white oaks ( Frontispiece ) , thus adding to the technical value of the wood for cooperage . This feature is also of ...
... heartwood impervious , or nearly so , to the entrance of fluids . Tyloses are especially abundant in the vessels of white oaks ( Frontispiece ) , thus adding to the technical value of the wood for cooperage . This feature is also of ...
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Uobičajeni izrazi i fraze
absent Acer Anatomy Betula bordered pits brown cambium Catalpa Cedar cell walls cells high cells wide Comparative Anatomy cross section DEBARY dense Dicotyledons distinct early wood elements Esculus Forestry Fraxinus grain growth ring Guaiacum Gymnosperms Hardwood Record heartwood heartwood and sapwood Hicoria IRVING W Juglans Juniperus Juniperus virginiana late wood Leitneria lens Liquidambar Liriodendron Magnolia MAXWELL numerous Odor perforations simple phloem Pine Pinus Pith flecks pits into ray Platanus Plate Populus Pores in late portion Quercus radial ray cells half-bordered Ray parenchyma ray tracheids resin resin cells resin ducts Robinia sapwood Sassafras scalariform Sequoia simple pits soft species stem structure surface tangential Taxodium Texture Tilia Timber Toxylon tree tyloses U. S. Dept U. S. Div U. S. Forest Service Ulmus unaided eye usually Vessels without spirals wood fibres Wood parenchyma Wood-using Industries xylem
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