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介绍了马尔马里克河土坝滑坡的成因,对滑坡进行了分析研究。强调了进行监测对于预测滑坡的重要性。 相似文献
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扎戈尔抽水蓄能电站施工经验B.M.普洛特尼科夫A.A.贝卡多罗夫主题词札戈尔抽水蓄能电站,施工技术,施工组织设计,运行可靠性扎戈尔抽水蓄能电站是俄罗新第一座大型新式蓄能电站,其设汁装机容曾为120万k\V(已装机80万kw)。前苏联水工建筑设汁院在技... 相似文献
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水工建筑物金属构件表面防锈处理方法[俄]B·C·阿尔图宁等主题词水工建筑物,金属材料,防腐蚀,方法,电磁效应,计算方法水工建筑物各种构件通常都是在锈蚀和磨损的条件下运行。采用特种材料,如高强钢材经济上又不合算,因此,使用廉价的金属防锈层较为适宜。除常... 相似文献
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德国维尔特根有限公司(Wirtgen GmbH)生产的联合采矿机在俄罗斯菱镁矿试用结果表明,使用纯机械作用破碎开采硬韧矿冉是可能的,与传统的穿孔爆破开采方法相比,使用联合采矿机有利于开采地区的环境保护,也可能降低采矿成本。 相似文献
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Sparkes BM Chrzanowski HM Parrain DP Buchler BC Lam PK Symul T 《The Review of scientific instruments》2011,82(7):075113
Digital control of optics experiments has many advantages over analog control systems, specifically in terms of the scalability, cost, flexibility, and the integration of system information into one location. We present a digital control system, freely available for download online, specifically designed for quantum optics experiments that allows for automatic and sequential re-locking of optical components. We show how the inbuilt locking analysis tools, including a white-noise network analyzer, can be used to help optimize individual locks, and verify the long term stability of the digital system. Finally, we present an example of the benefits of digital locking for quantum optics by applying the code to a specific experiment used to characterize optical Schr?dinger cat states. 相似文献
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The documented data regarding the three-dimensional structure of the air capillaries (ACs), the ultimate sites of gas exchange in the avian lung is contradictory. Further, the mode of gas exchange, described as cross-current has not been clearly elucidated. We studied the temporal and spatial arrangement of the terminal air conduits of the chicken lung and their relationship with the blood capillaries (BCs) in embryos as well as the definitive architecture in adults. Several visualization techniques that included corrosion casting, light microscopy as well as scanning and transmission electron microscopy were used. Two to six infundibulae extend from each atrium and give rise to numerous ACs that spread centrifugally. Majority of the ACs are tubular structures that give off branches, which anastomose with their neighboring cognates. Some ACs have globular shapes and a few are blind-ending tapering tubes. During inauguration, the luminal aspects of the ACs are characterized by numerous microvillus-like microplicae, which are formed during the complex processes of cell attenuation and canalization of the ACs. The parabronchial exchange BCs, initially inaugurated as disorganized meshworks, are reoriented via pillar formation to lie predominantly orthogonal to the long axes of the ACs. The remodeling of the retiform meshworks by intussusceptive angiogenesis essentially accomplishes a cross-current system at the gas exchange interface in the adults, where BCs form ring-like patterns around the ACs, thus establishing a cross-current system. Our findings clarify the mode of gas exchange in the parabronchial mantle and illuminate the basis for the functional efficiency of the avian lung. 相似文献