维普中文期刊产品整合服务
2篇 您的检索式:作者名="SEYOUM Kelemwork"
    题名 作者 年代 出处 被引量
1Effects of Anatomical Characteristics of Ethiopian Lowland Bamboo on Physical and Mechanical Properties显示文摘The main aim of this study was to evaluate the effects of anatomical characteristics of Ethiopian lowland bamboo on selected physical and mechanical properties. A total of 45 solid culms from three different age groups (2-, 3- and 4- year-old) were harvested from natural bamboo forest in Ethiopia and then samples were transported to China for carrying out anatomical characteristics test. Physical and mechanical properties testing were conducted in Ethiopia. The result indicates that age and height had significant effects on fiber length, fiber diameter and fiber wall thickness and insignificant effects on vascular bundles concentration. More over, fiber length, fiber diameter and vascular bundle size have a significant effect on both properties of this solid culm. The density and moisture content (MC) were highly affected by age and height variations. Density increased with an increase of age and MC decreased with an increase of age. The higher values of modulus of rupture (MOR) and modulus of elasticity (MOE) were obtained in the middle portions of height. Both values showed decreasing trend towards the top portion. Compression strength of culms decreases with increases of age and height. The results of correlation analyses revealed that the fiber length, the fiber diameter and the fiber wall thickness all had a positive correlation with the density and a negative correlation with MC. All anatomical variables showed insignificant correlation with all the shrinkages except the fiber wall thickness that showed a negative correlation with the radial shrinkage. The result further revealed a positive correlation of density with MOR and a negative correlation with MOE. The fiber length also showed a positive correlation with MOE. Both the fiber diameter and the vascular bundle size showed a positive correlation with the compression strength. However, MC showed a negative correlation.SEYOUM Kelemwork 2009Chinese Forestry Science and Technology2009,8,3:1
2Effect of Ratio of Face to Core Particles on Mechanical and Physical Properties of Particleboard Manufactured from Ethiopian Highland Bamboo显示文摘The study was conducted to evaluate effect of ratio of face to core particles on mechanical and physical properties of oriented strand board produced from Ethiopian highland bamboo.Three-layered oriented particleboards were manufactured with 4 proportions of face to core particles at 750 kg/m^3 target density.Ten percent urea formaldehyde resin was used as a binder.Strength and dimensional stability performances of all boards were assessed based on ISO standards.The results showed that modulus of rupture...SEYOUM Kelemwork PARIDAH Md.Tahi WONG Ee Ding RAHIM Sudin 2009Chinese Forestry Science and Technology2009,8,1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费