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何辉 《内蒙古公路与运输》2001,(Z1)
改革开放以来 ,我国公路总量不断增加 ,公路等级和质量迅猛提高 ,高速公路从无到有 ,极大地促进了国民经济的发展。随着公路总量的增加和质量的提高 ,如何维护好路权、保护好路产 ,保障公路安全畅通是当前路政管理工作的突出任务。文章就如何进一步规范和加强公路路政管理工作谈一点初浅认识 相似文献
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高速公路波形梁护栏是高速公路重要的交通安全设施,由于交通事故和行驶车辆的碰擦,护栏板常常被损坏,为保证高速公路的安全、畅通,就应对其进行及时,快速修复。主要从安全、原材料控制、施工工艺三个方面谈了对高速公路波形梁护栏维修现场管理的看法。 相似文献
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以G218线K508~K551段避险车道为例,说明在山区公路连续长、陡下坡路段设置避险车道是非常必要的,着重介绍了避险车道避险原理、位置设置、引道、服务道路、避险车道末端的吸能设施、避险车道材料等。 相似文献
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上海轨道交通11、13号线隆德路站换乘段结构设计 总被引:1,自引:0,他引:1
隆德路站是上海轨道交通11、13号线的换乘车站。它由两线车站、控制中心、地下变电站、附属结构等多部分组成,结构较为复杂。该文介绍了隆德路车站换乘段节点结构设计。换乘段为地下四层结构,施工采用明挖顺筑法施工。换乘段地下二层以上设采光中庭,顶板、下一层板开圆形大孔,在结构设计过程中,采用空间整体分析,计算模型与实际工况相吻合,计算结果合理,以期为其它类似工程提供借鉴。 相似文献
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Objective To investigate the possibility of microsatellite alteration (MA) in diagnosis of bladder cancer of Chinese people, and find the better panel which will be used in clinic. Methods A total of 6 and 10 microsatellite markers were chosen, PCR-SSLP silver staining assay was performed in 31 and 32 bladder cancers tissue, exfoliate cells in urine and 10, 15 non-bladder cancers exfoliate cells in urine, respectively. Results MA (+) was found in 28 out of 31, 30 out of 32 bladder cancers, and the sensitivity was 90. 3%, 93.7% respectively. The MA of urine sediment of 25 non-bladder cancers was negative, and the specificity was 100%. The cytology was carried out among 19 out of 31, 20 out of 32 bladder cancers at the same time, 2 cases (10.3%) and 3 cases (15%) were found cancer positive, and the sensitivity is significantly lower than that by the analysis of MA in exfoliated cells. Conclusion MA was not associated with grade and stage of the bladder cancer. MA assay is a sensitive and effective method for the early detection of bladder cancer and post-operation surveillance. 相似文献
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