共查询到10条相似文献,搜索用时 93 毫秒
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鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美". 相似文献
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Panayiotis C. Roussis Michael C. Constantinou Mustafa Erdik Eser Durukal Murat Dicleli 《Canadian Metallurgical Quarterly》2003,8(4):182-190
The Bolu viaduct is a 2.3-km-long seismically isolated structure that was nearly complete when it was struck by the 1999 Duzce earthquake in Turkey. It suffered complete failure of the seismic isolation system and narrowly avoided total collapse due to excessive superstructure movement. This paper presents an evaluation of the design of the viaduct’s seismic isolation system and an assessment of its performance in the Duzce earthquake. Evaluation of the seismic isolation system’s design has revealed that it did not meet the requirements of the AASHTO Guide Specifications for Seismic Isolation Design. Analysis of the viaduct with motions scaled in accordance with the AASHTO Guide Specifications resulted in a displacement demand of 820 mm, which is far more than the 210 mm displacement capacity of the existing isolation system. Analysis of the viaduct for a simulated near-fault motion with characteristics consistent with the site conditions resulted in an isolation system displacement demand of 1,400 mm. This indicates that, even if the isolation system had been designed in compliance with the AASHTO, it would have still suffered damage in the earthquake. 相似文献
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通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。 相似文献
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通过分析国内外地质勘探技术装备水平的现状,针对我国黄金行业地质勘探技术装备水平相对落后而制约了黄金工业发展的局面,提出了提高黄金地质勘探技术装备现代化水平应具备的有利条件。 相似文献
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对本钢冷轧厂轧机工作辊轴承润滑前存在的问题进行了分析并针对这些问题采取解措施进行了改造研究,最终采用工作辊轴承的油气润滑方式具有低能耗、易控制、润滑集中、润滑效果好、系统维护方便和安全性能高等特点。 相似文献
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Evaluation of Time-Dependent Behavior of Soils 总被引:6,自引:0,他引:6
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文章针对浅孔留矿法间柱与顶底柱回收问题,从采场结构、同采顺序、施工方案以及爆破工艺要求进行了详细的闸述。不同的地理及地质条件,选择不同的顶底柱回收方法,为该采矿方法存在的矿柱回收问题提供了可靠的思路。 相似文献