损伤

BEM for elastio-plastic contact problem is employed to study the deformation and loading station of the sleeve and roller neck of film bearing in rolling mill under special way of assembly in this paper.

利用弹塑性接触问题边界元法分析了轧机油膜轴承锥套与轧辊辊颈装配过程中的变形和载荷特性，讨论了接触应力和变形对锥套与辊颈损伤的影响，给出了防止锥套与辊颈装配过程损伤的具体改进措施。

Resultsforty-eight patients in this report were followed up from 6 to 24 months. based on joa low back pain score, there were 36 patients was in excellent result, 8 in good and 4 in fair, the satisfactory rate was 91.67% and effective rate was 100%.using circular saws in posterior lumbar interbody fusion has advantagas of good visualization profit removing disc tissue, preventing neurovascular injuries, and making good bone grafting bed.

结论应用环锯取骨植骨法，有以下3大优点：(1)手术视野大，椎间盘摘除彻底，既可避免摘除椎间盘时损伤重要组织，又易于构建良好的植骨床，有利于植骨融合；(2)取骨方便、安全、损伤小、出血少，既缩短了手术时间，又避免了取骨处并发症的发生，本术式平均手术用时90 min，出血量00 ml；(3)植骨融合率高，术后效果好。

Objective To observe the effect of Nimotop and hyperbaric oxygen in treating injuries of optic nerve after brain trauma.

目的 观察尼莫通及高压氧治疗外伤性视神经损伤的疗效，探索治疗外伤性视神经损伤新的有效方法。

First, this paper presents three girders model with double cable planes which main girder and side girder is connected by rigid arms, analyzes the dynamic characteristic of Yonghe cable-stayed bridge and obtains its natural vibration modes (i.e., frequency, damping values and the mode shapes ) by ANLSIS structural analysis program and uses these parameters as dynamic dactylogram of the intact case of cable-stayed bridge. Using the passage of random as the ambient vibration ,the dynamic properties of Yonghe Bridge is measured and the modal parameter of its 15 years after is identified and used as dynamic dactylogram of the damaged case. By the finite element analysis and locale vibration test, damaged and undamaged modal parameter is analyzed and curvature mode shape, which is sensitive to damage state, is introduced as possible candidate for identifying and locating damage in the cable-stayed bridge. Selecting the branch of part measured point from modal parameter, this paper deduces the damaged index which can detect the possible damaged location of the cable-stayed bridge deck and identifies the damaged region and degree for Yonghe Bridge. For the purpose of structural condition monitoring in in-situ , from another viewpoint, this paper introduces the method called the best optimization vector to detect damaged location and degree. The accuracy and reliability of the method presented in this paper are demonstrated by static analysis and test and the healthy state of Yonghe Bridge can be evaluated.

建立了双索面通过刚臂与主梁及边梁相连的三梁式力学模型，采用ANSYS结构分析程序对永和斜拉桥进行动力分析，对其振动模态参数进行识别，以此作为斜拉桥完好状态下的动力&指纹&；采用自由交通流作为环境振源，对永和斜拉桥动力特性进行测试，识别出永和斜拉桥使用15年后的模态参数，确立了破损状态下的动力&指纹&；利用有限元分析、现场振动测试，对破损前后的模态参数进行分析，提取对破损状况较敏感的模态曲率作为斜拉桥破损诊断的参数；并从模态参数中选取部分点的分量，导出可以指示斜拉桥桥面大概损伤位置的Index损伤指标，识别出斜拉桥发生破损的区段及破损程度；考虑大型斜拉桥在线监测要求识别破损的具体位置，从另一角度提出采用最优矢量法具体确定破损发生的位置及程度；为验证本文研究成果，对永和斜拉桥进行静力分析及静力测试，对其健康状况提出可靠的评价。

This study was conducted to quantitatively evaluation the deterioration of concretes and effect of chloride on damage.In this paper,2 sets of plain concretes with W/B being 0.35 and 0.45 respectively,and 2 series of concretes with 20% and 30% replace ratio of fly ash,were made.Two kinds of corrosion system were used;one was concrete stored in corrosion solution for 500 d,another was drying-immersion cycles.

研究了水胶比为0.35和0.45的普通混凝土和粉煤灰掺量为20%和30%的粉煤灰混凝土在2种溶液(5%Na2SO4溶液，3.5%NaCl+5%Na2SO4复合溶液)和2种腐蚀制度下各混凝土的损伤失效规律、特点及氯盐对混凝土硫酸盐损伤的正负效应。

Suggestions on tube replacement and combustion adjustment were proposed.

介绍了吴泾热电厂11号锅炉冷灰斗斜面水冷壁管减薄损伤情况，分析了管壁损伤的原因，提出了相应的管子更换和燃烧调整试验建议。

The maxillofacial and brain injuries were examined. Craniptomy was done to animals of impact injury 6 hours after damage, however it was done to animals of explosive injury in different time point (1 hour, 24 hours, 72 hours, 7 days, 14 days after damage). The pathological characteristics of corelative tissues were examined in detail under light and electron microscopes. The content of LPO, SOD, NO in soft tissue, brain, blood, and cerebral water content were measured, compared with control. The distribution and tissue location of NOS were studied by histochemistical and immunohistochemistic methods. Their relationship was studied to assess the pathological and physiological characteristics of maxillofacial injuries and brain damage associated.

撞击伤各组动物于伤后6h、爆炸伤各组动物于伤后不同时期（1h、24h、72h、7d、14d）开颅检查颅脑损伤情况，切取伤区肌组织、左侧脑组织、脑干标本行光镜、电镜观察；测定伤后肌组织、脑组织与血中LPO、SOD、NO含量及脑水含量变化；并使用组织化学和免疫组织化学的方法，观察伤后脑组织中NOS的分布和组织定位，研究伤后机体的病理及病理生理学改变特点，以及颅脑损伤与机体自由基反应、NO含量改变之间的关系，证实其病理作用。

This thesis analyses damage mechanism of amphibious armored equipment in cross-channel landing operation.

从分析两栖装甲装备在未来作战中的损伤机理入手，在缺乏大量实际战损数据的情况下，通过建立装备战场损伤仿真模型，为战时装备保障方案的制定，提供科学有效的辅助决策依据。

Rats were received four injections at peri-lesion area of BMSCs or DMEM culture fluid at 30 minutes after SCI.

脊髓损伤后30 min，进行BMSCs或DMEM培养液损伤周围局部四点注射。

In order to investigate the formation and damage of surface films ,electrical contact resistance method was used to monitor the formation of surface films in reciprocating lubricated cylinder bore/piston ring pairs.

为了研究摩擦副中表面膜的形成和损伤状态，用接触电阻法对润滑条件下往复运动的缸套/活塞环摩擦副进行了试验研究，提出了可揭示表面膜状态的表征方法，并成功观测到了磨粒对表面膜的损伤及恢复过程。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。