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后柱性共济失调家系调查(附1家系6例报告)
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作者 陈书同 倪伟光 +1 位作者 庄柏翔 吴厚友 《徐州医学院学报》 CAS 1995年第1期66-67,共2页
报告后柱性共济失调1家系,共6例患者。第1代为近亲结婚,其他患者主要体征为深感觉障碍、骨骼畸形,无痛觉减退。先证者除有深感觉障碍,肌张力减低、腱反射消失、昂白氏征阳性、骨骼畸形外,还合并有短暂痛觉障碍,说明不仅有脊髓... 报告后柱性共济失调1家系,共6例患者。第1代为近亲结婚,其他患者主要体征为深感觉障碍、骨骼畸形,无痛觉减退。先证者除有深感觉障碍,肌张力减低、腱反射消失、昂白氏征阳性、骨骼畸形外,还合并有短暂痛觉障碍,说明不仅有脊髓后索损害,同时有后根损害。推测本病可能属常染色体显性遗传。 展开更多
关键词 后柱性 共济失调 遗传共济失调 染色体 家系
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Research and application of schemes for constructing concrete pillars in large section finishing cut in backfill coal mining 被引量:3
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作者 Sun Qiang Zhang Jixiong +2 位作者 Ju Feng Li Linyue Zhao Xu 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2015年第6期915-920,共6页
Based on the technology of controlling surrounding rock deformation by constructing concrete pillars in large section finishing cut in backfill coal mining, the characteristics of vertical stress on concrete pillars a... Based on the technology of controlling surrounding rock deformation by constructing concrete pillars in large section finishing cut in backfill coal mining, the characteristics of vertical stress on concrete pillars and main factors influencing pillar stability are analyzed. By building a Winkler elastic foundation mechanical model for the support system constituted of coal pillar, backfill body and concrete pillars, mechanical calculation on stability of concrete pillar is carried out to evaluate the pillar stability and safety. Seven numeral models in three schemes with different pillar sizes, inter-row distances and compression ratios at the stopes were analyzed through numerical simulation according to width reduction principle. The practice of finishing cut at IIIB44 workface at Yangzhuang coal mine shows that: when the actual compression ratio is 86.5%, construction size inside the finishing cut is 2000 mm x 2000 mm and the interval between concrete pillars is 2000 mm x 2000 mm, the pillars can be stable with the maximum movement of two sides of each pillar being only 83 mm and 54 mm, which achieves the expected effect. 展开更多
关键词 Concrete pillar Finishing cutNumerical simulation Surrounding rock deformation
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