著者
三上 真人 瀬尾 健彦 菊池 政雄 森上 修
出版者
山口大学
雑誌
基盤研究(B)
巻号頁・発行日
2012-04-01

ジェットエンジン高空再着火時の燃料噴霧燃え広がりの理解を深めるために低圧における液滴列燃え広がりの微小重力実験行った.実験の結果,低圧での燃え広がり速度および燃え広がり限界はともに,大気圧の場合より大きくなることが明らかとなった.これらの圧力依存性について,燃え広がりに関わる素過程を考慮して考察を行った.高温領域の熱伝導速度は圧力に逆比例する.一方,高温領域の広がりの非定常性を考慮すると,その最大半径は圧力の-1/3乗に比例する.この圧力依存性を有する燃え広がり限界距離を考慮して,低圧におけるランダム分散液滴群の群燃焼発現特性を求めることができた.
著者
松延 知哉 大賀 正義 生田 光 田丸 卓弥 有馬 準一 中野 壮一郎 鳥越 清之 瀬尾 健一
出版者
West-Japanese Society of Orthopedics & Traumatology
雑誌
整形外科と災害外科 (ISSN:00371033)
巻号頁・発行日
vol.49, no.2, pp.416-421, 2000-03-25
参考文献数
2
被引用文献数
1 1

This study reviewed an over one-year follow-up results of 18 cases who underwent posterior lumbar interbody fusion with Brantigan I/F cage. The clinical success was defined according to Hirabayashi's scale. 9 cases were categorized as excellent, 4 cases as good, 2 cases as fair, and the remaining 3 cases as poor. Plane X-ray radiographs revealed bone union in 18 out of 20 levels (union rate 90.0%), and non-union in only one level. The remaining cases could be concluded as neither union nor non-union because of interrueted bone trabeculae. Assessment results of X-ray radiographs were most or less satisfactory and correction loss was not observed.<br>X-rays of some patients treated for degenerative spondylolisthesis showed carbon fiber cages buried deep in the upper vertebral bodies. A reaming device could be slipped onto the edges of the lower vertebral bodies, so pre-shaving them would be important. It is important that the autologous bone graft harvested from the lamina by laminectomy be unrelated with any donor site pain from the ilium. However it should be borne in mind that of MOB patients have poor bone quality after the autologous bone graft, the possibility of non-union is high. We concluded that the Brantigan I/F cage is an useful implant, but certain characteristics should be clarified for clinical and union success.