Objective To investigate the etiological factors and clinical manifestation of evulsion of optic nerve and evaluate the therapeutic effect and the prognosis of it. 目的探讨视神经撕脱的发生机制、临床表现特点,评价分析其疗效和预后。
Taking the commercial concrete in Zhengzhou as example, nondestructive tests are carried out by coring drilling, back-install evulsion, springing, from which concrete intensity is reckoned. 以郑州市商品混凝土为例,对其中12个素商品混凝土构件,进行了钻芯法、后装拔出法、回弹法等非破损检测试验,根据试验数据,推定了混凝土强度。
Methods The 12 patients diagnosed as evulsion of optic nerve, were retrospectively evaluated from the clinical manifestation and the therapeutic effect. 方法通过本组12例视神经撕脱患者的临床表现和治疗经验,结合文献进行回顾性分析讨论。
The stress expression of the whisker tip was got on the basis of modifying the shear lag theory. The expression to forecast the corporate toughening effect of whisker bridging, whisker evulsion and crackle deflexion was derived. 对剪滞理论进行了修正,得出了晶须端部所受应力的表达式,推导出了预报晶须桥联、晶须拔出、裂纹偏转三者协同增韧效果的表达式。
In the rupture process of the composite, crack deflexion, crystal evulsion, and rupture through crystal could be observed. 渗透复合体在断裂过程中可见:裂纹偏转、晶体拔出和穿晶断裂。
Results Evulsion of optic nerve was one of the severe ocular trauma. The prognosis was bad. 结果视神经撕脱是一种严重的眼外伤,预后差。
Foam behaviors under load are from bend, compress and tension of hole wall to flection, break, snap and fibrous evulsion. 泡沫体的细观行为表现为:泡壁的弯曲、压缩、拉伸到屈曲、碎裂和拉断、纤维的拔出等;