损伤

Gate of shortcomings:(1) easy to damage the sealing when the damper open and close the valve seat in contact with the two relative friction between the seal and easy to damage, which affects seals with the life and maintenance more difficult.

闸阀的缺点：(1)密封面易损伤启闭时闸板与阀座相接触的两密封而之间有相对摩擦，易损伤，影响密封件能与使用寿命，维修比较困难。

Gate of shortcomings:(1) easy to damage the sealing surface when the damper open and close the valve seat in contact with the two relative friction between the seal and easy to damage, which affects seals with the life and maintenance more difficult.

闸阀的缺点：(1)密封面易损伤启闭时闸板与阀座相接触的两密封而之间有相对摩擦，易损伤，影响密封件能与使用寿命，维修比较困难。

Objectives The study was designed to discover the correlative factors and main reason of early death after cervical spinal cord injury, to find the issue during early treating and curing, to improve the treating measure and to reduce the early mortality.

目的本研究旨在探索颈脊髓损伤致早期死亡的相关因素、主要原因和内在机理，发现早期救治中存在的问题，改进早期救治方案及措施，降低颈髓损伤患者早期死亡率。

Because of complex tectonic boundary condition and high stress environment in deep rock mass,surrounding rock has intrinsic characteristics,which will damage caused by stress redistribution in excavation of deep-buried tunnel .

随着细观损伤岩体力学的发展，采用损伤观点解决深埋隧道围岩破坏问题逐渐显示出其优越性，但目前仅在均质性假设的基础上对应力状态和破坏判据进行研究，缺乏对其破坏全过程的相关研究。

In order to research threshing seed-corn identity and damage mechanism, improve threshing principle, reduce damage and enhance efficiency, the threshing experiments for Longdi-401 seed-corn were carried out by using the LDS microcomputer control and electron draw press test machine, to investigate the effects of variety , moisture condition, force position and restriction property.

摘 要：为深入研究种子玉米脱粒特性和脱粒损伤机理，改进玉米脱粒机，降低脱粒损伤，提高脱粒效率，以隆迪401玉米种子为对象，应用LDS微机控制电子拉压试验机等进行了脱粒试验，研究了玉米种子品种、含水率、作用部位及不同约束性质下的种子玉米脱粒力学特性。

Eighty SD rats were randomly divided into four groups: acute spinal cord injury groups ( SCI groups, n=20);administration of Ulinastatin (U groups, n=20), use Ulinastatin after SCI at half an- and 4- and 8- and 24- and 48- hour.;administration of Methylprednisolone (M groups, n=20), use Ulinastatin after SCI at half an- and 4- and 8- and 24- and 48- hour; administration of Ulinastatin and Methylprednisolone(M+U groups, n=20), use Ulinastatin and Methylprednisolone after SCI at half an- and 4- and 8- and 24- and 48- hour;Allen's weight drop model of acute spinal cord injury was prepared.

本课题利用Allen重物打击模型，选用SD大鼠80只，随机分为四组：脊髓损伤组(SCI组，n=20)；使用乌司他丁组(乌组，n=20)；使用甲基强的松龙组(甲组，n=20)；乌司他丁+甲基强的松龙联合用药组(乌+甲组，n=20)，所有给药组在脊髓损伤后(半小时、4小时、8小时、24小时、48小时)给药。

Because SCI can lead to a very high disablement rate—completely or partly function loss of aesthesis, action an urine and stool, now it is still a hot and difficult problem for scientists of every country that how to protect the injured cord effectively and promote its recovery.

由于SCI常导致损伤平面以下感觉。运动及二便功能完全或部分丧失，有很高的致残率，给个人，家庭，社会带来巨大负担，因此，如何有效地保护损伤脊髓组织促进SCI修复目前仍是各国科学工作者研究的热点和难点。

When a piece of the broken bone is out of the alinement, it is called the displaced fracture.

骨折的治疗方法取决于骨折的种类和部位，以及是否有其他的损伤和这些损伤有多严重。

Methods 42 death cases of cardiovascular system disease with trauma were autopsied systematically and the sections are observed by H.

方法42例心血管系统疾病伴损伤死亡案例均接受系统病理学解剖和组织学观察，且死因明确。结果42例中40岁以上者占到64.28%，男性较女性死者多。擦伤和挫伤在损伤中比例最大共占到80.95%，冠心病和高血压病死亡者各占45.24%、16.67%。

Results The expressions of PDGF-B were increased in proximal nerve segments and regenerating axons in both models.

结果：两类损伤模型中，损伤近端神经和再生轴突PDGF-B的表达均增强。

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。