搜索结果: 1-8 共查到“工学 wood properties”相关记录8条 . 查询时间(0.046 秒)
Index selection for growth and construction wood properties in Pinus elliottii open-pollinated families in southern China
growth construction wood properties Pinus elliottii open-pollinated families
2023/6/5
The initial introduction of Pinus elliottii (PEE) to China occurred in the 1930s, and the planting of this conifer species has now attained close to 3 million ha in the subtropical zone of southern Ch...
Variation of Wood Properties with Height Position in the Stems of Obi-Sugi Cultivars
Obi-sugi cultivars wood property variation microfibril angle basic density height increment
2009/11/23
To promote the use of sugi woods, the information on the variation of wood properties is very important. Obi-sugi is a major group of sugi cultivars planted in Southern Kyushu. However there is no inf...
Growth and Wood Properties of Sugi（Cryptomeria japonica）Cultivars Planted in the Kyushu Region
sugi cultivar MuPS growth wood property
2009/3/6
This study examined growth and wood properties of sugi (Cryptomeria japonica D. Don) cutting cultivars planted in the Kyushu region. Sixteen cultivars (48 trees) which were identified based on MuPS (...
Comparison of Wood Properties of Hinoki（Chamaecyparis obtusa）Small Diameter Logs Collected from Different Tree Ages and Heights
hinoki basic density pilodyn penetration compression strength
2009/3/6
To effectively utilize small diameter logs as a civil engineering material, the wood properties of such logs of hinoki (Chamaecyparis obtusa Endl.) were investigated by determining density of air-dri...
Variations of Wood Properties in Forests of Seedlings and Cutting Cultivars of Hinoki（Chamaecyparis obtusa）
hinoki Nangohi cutting cultivars seedling wood property
2009/3/6
Intra-forest variations of wood properties (radial growth, basic density, green moisture content, heartwood color, tracheid length, dynamic Young's modulus and mechanical properties) and the differenc...
Effects of Initial Spacing on Growth and Wood Properties of Sugi（Cryptomeria japonica）Cutting Cultivars
Cryptomeria japonica, cutting cultivar, growth, wood property, initial spacing
2009/3/6
To determine the effect of initial spacing on growth and wood properties of sugi (Cryptomeria japonica D. Don) cutting cultivars, six cultivars (Iwao, Hinode, Yamaguchi, Yaichi, Shakain, Yabukuguri) w...
Methods for improving building wood properties
wood modification heat-treated wood acetylation nano-coatings wood-plastic composites WPC
2009/2/25
The development of methods for improving wood properties and durability of wood and wood-coating system has been intensified lately. Wood properties such as dimensional stability, water repellency, ...
Effect of technological parameters and wood properties on cutting power in plane milling of juvenile poplar wood
poplar cutting power juvenile wood fast-growing trees
2009/2/25
This paper presents the results of experimental measurements aimed at observing the effect of technological parameters (cutting speed vc and feed speed vf ), type of wood (juvenile wood and mature w...