Results 11 to 20 of about 23,243 (257)
Position and role of tension wood in trees - Case study: Eucalypts [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2016 One-year seedlings of five species of eucalypt: E. camaldulensis, E. microtheca, E. viminalis, E. globulus and E. gunnii were treated for 14 weeks in growth season, tilting a branch to c. 60° in every successful ones.
Nooshin Toghraie
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On the detachment of the gelatinous layer in tension wood fiber [PDF]
Journal of Wood Science, 2005 The detachment of the gelatinous layer (G-layer), often observed on microtome cross sections, has led some authors to believe that the G-layer cannot act as the driving force of longitudinal shrinkage in tension wood. The aim of this study was to observe the detachment of the G-layer along fibers.
Clair, Bruno +2 more
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Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2012 The acoustic behavior of reaction and normal woods, phase velocity, group velocity and attenuation coefficients in the main directions for two wood species (Populus deltoids & Picea abies), were measured and compared.
Mohammad ali Sadat nia +4 more
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SHRINKAGE OF THE GELATINOUS LAYER OF POPLAR AND BEECH TENSION WOOD [PDF]
IAWA Journal, 2001 Macroscopic longitudinal shrinkage of beech and poplar tension wood is higher than in normal wood. This shrinkage is the result of mechanical interactions of cell wall layers. SEM observation of cut, dried surfaces showed that longitudinal shrinkage is much greater in the gelatinous layer than in other layers.
Clair, Bruno, Thibaut, Bernard
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The effect of drying intensity and moisture content on longitudinal permeability of poplar tension and normal wood (populus nigra ) [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2011 The longitudinal gas permeability of tension wood and normal wood of Populus nigra dried by two different drying conditions was measured. Board specimens were dried under mild conditions (50ºC, and ٪63 relative humidity) to reach ٪11.8 MC, and under ...
Mohammad mehdi Parhizkari +3 more
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STADY OF SURFACE TENSION OF MODIFIED WOOD
Materials of the All-Russian scientific and practical conference "Modern machines, equipment and IT solutions for industrial complex: theory and practice", 2021 The study of the surface tension of wood of various tree species impregnated with used sunflower oil was carried out. Samples of birch, pine and linden wood were used for oil treatment. Impregnation of wood materials was carried out by the method of “hot-cold baths”. As an impregnating material, used refined fryer oil was used.
V. Zayats +2 more
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Investigation of Properties of paper made from tensile wood and normal wood in Populus nigra [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2015 In this research Tension Wood (TW) and Normal Wood (NW) of Poplar were analyzed for pulp production using Kraft pulping process. After preparing samples, Biometric characteristics of the NW and TW fibers were measured and samples were converted to pulp ...
Jaber Hossein zade +4 more
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Distribution of Vessels in Tension Wood and Its Correlation with Lignin Composition
Jurnal Ilmu Kehutanan, 2019 The anatomical properties of tension wood were investigated for number and diameter of vessel and its correlation with lignin composition. Reaction wood sample was taken from the leaning stem of mindi (Melia azedarach).
Deded Sarip Nawawi +4 more
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Notulae Scientia Biologicae, 2011 In this paper, temperature evolution through tension wood and normal wood in poplar (Populus nigra) under a convective drying condition was investigated.
Asghar TARMIAN +2 more
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Structural Characteristics of Reaction Tissue in Plants
Plants, 2023 To maintain or adjust posture under the challenges of gravity and increased self-weight, or the effects of light, snow, and slope, plants have the ability to develop a special type of tissue called reaction tissue.
Litong Liu +5 more
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