Results 11 to 20 of about 17,332 (263)
Possibility of using non-destructive spectrophotometery to detect the poplar tension wood and spruce compression wood in freshly cut and dried timbers [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2012 In this study, the potential use of spectrophotometery and CIELAB technique was evaluated to detect reaction woods, including poplar tension wood and spruce compression wood. Thus, two trees of spruce ( Picea abies) and poplar (Populous nigra) containing
Zinab Frozan +2 more
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Variability in density of spruce (Picea abies [L.] Karst.) wood with the presence of reaction wood
Journal of Forest Science, 2007 The study was aimed to assess the integral value that determines wood properties - wood density at a moisture content of 0% and 12%. The wood density was researched in a sample tree with the presence of reaction compression wood.
V. Gryc, P. Horáček
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Frontiers in Genetics, 2022 Compression wood (CW) in gymnosperm brings great difficulties to wood industry using wood as raw materials since CW presents special wood structure and have different physical and chemical properties from those of normal wood (NW).
Zekun Zhang +14 more
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Mechanics of the Compression Wood Response [PDF]
Plant Physiology, 1970 Righting of two tilted white pine (Pinus strobus L.) stem leaders by compression wood formation was followed for 16 weeks. The natural curves and three deflection curves under added end loads were determined from weekly field photographs. Data for self-loading and cross sectional diameters were interpolated from original estimated and final ...
R R, Archer, B F, Wilson
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Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010 The paper is aimed at the field of the microscopic structure of wood dealing with the description of the most important anatomic element in softwood – tracheids in a stem with the occurrence of reaction wood.
Vladimír Gryc, Hanuš Vavrčík
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Mechanical properties of compressed wood
Construction and Building Materials, 2021 Wood is a natural composite material. However, its relatively low mechanical properties restrict the use in advanced structural applications but recent studies have shown that Compressed Wood (CW), with superior mechanical properties due to material densification, could be utilised in timber products and timber connections as an alternative to energy ...
Siavash Namari +11 more
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Stem straightness and compression wood in a 22-year-old stand of container-grown Scots pine trees
Silva Fennica, 2004 The distribution of compression wood in relation to eccentric growth and development of stem straightness was studied in a 22-year-old Scots pine (Pinus sylvestris L.) stand in central Sweden that was established with container-grown seedlings.
Warensjö, Mats, Rune, Göran
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EFFECT OF COMPRESSION WOOD ON SOME CHEMICAL PROPERTIES OF Pinus brutia Ten. LEANING TREES [PDF]
Mesopotamia Journal of Agriculture, 2011 This study was conducted to show the effect of compression wood on some chemical characteristics of brutia pine Pinus brutia Ten. trees growing naturally at Dohuk provenance and to compare it with the normal growing trees (tree leaning type) for four ...
Abdulrazak R. S. Almalah
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Journal of Wood Science, 2021 The sapwood and heartwood of plantation sugi wood (Cryptomeria japonica), and plantation hinoki (Chamaecyparis obtusa) wood were flat-sawn into timbers, then kiln-dried to a MC level below 12%. These timbers were further processed into specific sizes and
Rongfeng Huang +3 more
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Mechanical strength of reaction wood
Silva Fennica, 1977 According to the literature, the mechanical strength of the green reaction wood of softwood species (compression wood) is greater than that of normal wood. Drying increases the mechanical strength but less in reaction wood than in normal wood.
Kärkkäinen, Matti, Raivonen, Marjut
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