Results 231 to 240 of about 14,525 (254)

Transverse shrinkage in maritime pine juvenile wood

Wood Science and Technology, 1997
This paper reports experimental results concerning the transverse shrinkage variability within and between trees of two samples composed of 17 eleven-year-old and 20 twenty-year-old maritime pine trees harvested in two stands at the Forest Research Centre of INRA Pierroton in Aquitaine.
Dumail, J.F., Castéra, Patrick
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Juvenile Wood of Hardwoods Judged by Density Variation

IAWA Journal, 1984
In the ring-porous hardwoods the changes of basic density are influenced by ring width, while basic density of diffuse-porous hardwoods is almost independent of ring width. The radial variations of basic density in each ring width class are useful for distinguishing between age and growth effects.
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Demarcation of juvenile and mature woods of planted Chinese fir and its wood quality prediction

Journal of Forestry Research, 1998
According to the data of trashed length, micro fiber angle, air density, ring width and late wood percentage, with the analysis of optimum method of classification, the boundary line of juvenile wood and mature wood of planted Chinese fir (Cunninghamia lanceolata) was determined as the 14th year.
Li Jian, Liu Yixing, Cui Yongzhi, Xu Zicai   +3 more
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Juvenile Wood and Its Properties

2009
Wood based products (especially building sector) are desired homogeneous as much as possible. Juvenile woodwhich occurs at first years of trees growth (approximately 5-20 years) may impair this homogeneous. Becausejuvenile wood show too different in mature wood, which comprise of after juvenile wood (more than 20 years)and have higher strength ...
ARSLAN, Mustafa Burak, AYDEMİR, Deniz
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Effect of juvenile wood on wood properties variations in Eucalypts

2001
The heterogeneousness of the physical and mechanical properties of Eucalypts from plantations limits the utilization of this group of species for solid wood products. In effect, wood products manufacturers aim to process a material as homogeneous as possible in order to be able to propose standard quality products to their customers.
Gérard, Jean, Baillères, Henri, Chanson, Bernard, Fournier, Meriem, Thibaut, Bernard   +4 more
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Survival of Juvenile Wood Ducks in a Northern Greentree Impoundment

The Journal of Wildlife Management, 1984
Utilisation du modele de Darroch pour estimer la survie d'Aix sponsa apres un apport d'eau experimental dans un bassin temporaire cree pour attirer et fournir un habitat au gibier d'eau migrateur du New York central.
G. M. Haramis, D. Q. Thompson
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Some Physical and Mechanical Properties of Juvenile Wood and Mature Wood of Taurus Cedar

2012
Bu çalışmada, Kahramanmaraş-Başkonuş mevkiinden temin edilen Toros sedirinin (Cedrus Libani A.Richard) genç odun ve olgun odununun bazı fiziksel ve mekanik özellikleri Türk standartlarına göre belirlenmiştir. Genç odunun hava kurusu yoğunluk, tam kuru yoğunluk, hacmen daralma, hacmen genişleme, lif doygunluk noktası ve taze hal rutubeti sırasıyla; 574 ...
BAL, Bekir, BEKTAŞ, İbrahim, KAYMAKÇI, Alperen   +2 more
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A Study on Differences in Fiber Morphology between Juvenile Wood and Mature Wood

2017
Bu çalışmada, genç odun ve olgun odun arasında lif morfolojisindeki farklılıklar sedir ve okaliptüs ağaçlarından elde edilen test örnekleri üzerinde araştırılmıştır. Bu amaç için, lif uzunluğu, lif genişliği, lümen çapı ve çeper kalınlığı ölçülmüştür. Ölçümler genç odun ve olgun odun örnekleri üzerinde ayrı ayrı yapılmıştır.
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Juvenile Wood in Forest Trees

1998
Bruce J. Zobel, Jerry R. Sprague
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JUVENILE WOOD IN SPRUCE (Picea abies Karst.) - LIMITATION OF USE Comparison of physical and mechanical properties between juvenile and adult wood

2004
In Norway spruce wood (Picea abies Karst.) growth rate (GR), oven dry density, knottiness and 4 mechanical properties (MP) (bending and compression strength, modulus of elasticity in bending (Eb) and toughness (Aw)) at successive growth sections in direction from pith to bark (A - 10 years, B - 20 years, C - 30 years, E - at the border of the cambium ...
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