The objective of the study was to determine the effect of bamboo-wood layer compositions on the properties of bamboo composite lumber. Laboratory scale bamboo composite lumbers （BCLs） with four different core layer ...The objective of the study was to determine the effect of bamboo-wood layer compositions on the properties of bamboo composite lumber. Laboratory scale bamboo composite lumbers （BCLs） with four different core layer materials, i.e., bamboo strips glued vertically, jabon wood plank （Anthocephalus cadamba Miq.）, manii wood plank （Maesopsis eminii Engl.） and sengon wood plank （Falcataria moluccana （Miq.） Barneby ＆ J.W. Grimes） were fabricated using Andong bamboo （Gigantochloa pseudoarundinacea （Steud.） Widjaja） strips glued horizontally as the outer layers and Andong bamboo zephyrs used as the second and the fourth layers. BCLs were manufactured using water based polymer-isocyanate （WBPI） adhesive with the glue spread of 250 g/m2, and the cold pressing time applied was 1 h. Results showed that physical and mechanical properties of BCLs were significantly affected by the layer compositions. The BCL consisted of 100% bamboo strips exhibited higher density （0.754 g/cm3） and mechanical properties （modulus of rupture （MOR） 1,162 kgf/cm2, modulus of elasticity （MOE） 173,757 kgf/cm2, compression strength 644.7 kgf/cm2 and hardness 553 kgf）, compared to BCLs, of which the core layer was made of wood plank （density 0.533 g/cm3, MOR 648 kgf/cm2, MOE 77,893 kgf/cm2, compression strength 389.7 kgf/cm2 and hardness 355 kgf, respectively）. No delamination occurred in all samples, indicating a high bonding quality. BCL made of 100% bamboo strips had strength values comparable to wood strength class I, while BCL with core layer made of wood plank of jabon, manii or sengon had strength values similar to wood strength class III. All BCLs produced are suitable for solid wood substitute.展开更多
The patient with dysmenorrhea was treated by needling at Tàichōng（太冲 LR 3）, 4 times of treatment was given and the nausea, migraine and pain scale of the patient were alleviated and finally disappeared.Until...The patient with dysmenorrhea was treated by needling at Tàichōng（太冲 LR 3）, 4 times of treatment was given and the nausea, migraine and pain scale of the patient were alleviated and finally disappeared.Until the next two menstrual period, patient did not have similar complaints. The author recommended for other acupuncturists to utilize LR 3 as complementary therapy for relieving pain at primary dysmenorrhea.展开更多
文摘The objective of the study was to determine the effect of bamboo-wood layer compositions on the properties of bamboo composite lumber. Laboratory scale bamboo composite lumbers （BCLs） with four different core layer materials, i.e., bamboo strips glued vertically, jabon wood plank （Anthocephalus cadamba Miq.）, manii wood plank （Maesopsis eminii Engl.） and sengon wood plank （Falcataria moluccana （Miq.） Barneby ＆ J.W. Grimes） were fabricated using Andong bamboo （Gigantochloa pseudoarundinacea （Steud.） Widjaja） strips glued horizontally as the outer layers and Andong bamboo zephyrs used as the second and the fourth layers. BCLs were manufactured using water based polymer-isocyanate （WBPI） adhesive with the glue spread of 250 g/m2, and the cold pressing time applied was 1 h. Results showed that physical and mechanical properties of BCLs were significantly affected by the layer compositions. The BCL consisted of 100% bamboo strips exhibited higher density （0.754 g/cm3） and mechanical properties （modulus of rupture （MOR） 1,162 kgf/cm2, modulus of elasticity （MOE） 173,757 kgf/cm2, compression strength 644.7 kgf/cm2 and hardness 553 kgf）, compared to BCLs, of which the core layer was made of wood plank （density 0.533 g/cm3, MOR 648 kgf/cm2, MOE 77,893 kgf/cm2, compression strength 389.7 kgf/cm2 and hardness 355 kgf, respectively）. No delamination occurred in all samples, indicating a high bonding quality. BCL made of 100% bamboo strips had strength values comparable to wood strength class I, while BCL with core layer made of wood plank of jabon, manii or sengon had strength values similar to wood strength class III. All BCLs produced are suitable for solid wood substitute.
文摘The patient with dysmenorrhea was treated by needling at Tàichōng（太冲 LR 3）, 4 times of treatment was given and the nausea, migraine and pain scale of the patient were alleviated and finally disappeared.Until the next two menstrual period, patient did not have similar complaints. The author recommended for other acupuncturists to utilize LR 3 as complementary therapy for relieving pain at primary dysmenorrhea.
