红石水电站尾水平台结构缝渗漏止水处理

本文首先简要介绍了红石水电站工程概况，分析了尾水平台结构缝渗漏水的原因；其次详尽介绍了对水电站尾水平台结构缝渗漏水作处理的施工技术方案和施工方法；最后给出了所用修补材料的力学性能指标。     

应用于套管补贴的膨胀管技术

针对常规补贴套管技术无法满足长井段、高井温的要求以及施工工艺复杂、工序多、修复后井眼内径变化较大的问题,提出了膨胀管补贴套管技术。介绍了该技术的技术原理、技术关键、施工方法。该技术克服了以往套管补贴技术存在的不足,具有施工工艺简单、套管修复后能产生永久性密封且井眼尺寸变化小等特点,具有广阔的推广应用前景。     

Hybrid Multicast and Segment‐Based Caching for VoD Services in LTE Networks

This paper proposes a novel video delivery scheme that reduces the bandwidth consumption cost from a video server to terminals in Long‐Term Evolution networks. This proposed scheme combines optimized hybrid multicast with a segment‐based caching strategy for use in environments where the maximum number of multicast channels is limited. The optimized hybrid multicast, allocation of multicast channels, and cache allocation are determined on the basis of a video's request rate, the related video's length, and the variable cost per unit size of a segment belonging to the related video. Performance evaluation results show that the proposed scheme reduces a video's delivery costs. This work is applicable to on‐demand TV services that feature asynchronous video content requests.     

膨胀管套管补贴工艺及在胜利油田的应用

膨胀管补贴技术可用于大井段套管修复，完全不同于现有的波纹管套管补贴技术及补贴加固技术，在套管修复以后其内径减小量很小，能承受的抗压强度是其他方法不能比拟的。膨胀管密封悬挂技术采用耐高温、高强度橡胶材料，膨胀后紧密地与原套管内壁接触，从而达到密封与悬挂的目的。2005～2006年，该技术在胜利油田4口井推广应用，其中，梁38—1井超百米井段补贴获得成功。     

HHT-3液压夯实技术在三背回填处理中的应用

详细介绍了采用HHT-3液压夯实技术对存在质量隐患的三背进行补压的过程及施工工艺,通过检测补压后的沉降量及表层压实度,结果显示,该技术可有效地提高三背回填的质量水平,具有较大的推广应用价值。     

某高层住宅楼火灾后混凝土结构综合加固方法

高层住宅发生火灾后,过火位置的混凝土构件不可避免地会受到损伤。本文结合实际工程案例,介绍了一种综合加固方法,可有效地对遭受火灾损伤后的混凝土构件进行加固处理,恢复构件的承载力,保证结构的安全性。     

百龙滩水电厂转轮室修补工艺研究

就贯流式水轮机转轮室气蚀后补焊和加工的特点及难点,提出了工艺方案,经实践证明切实可行,从而总结出一种转轮室补焊和加工的方法。     

Treatment of corneal dellen with a large diameter soft contact lens

A 58-year-old man presented with corneal dellen twelve days after pterygium removal on his left eye. Initial treatment with lubrication and artificial tears was unsuccessful. The fitting of a conventional contact lens was not possible because of conjuctival chemosis. Additionally the patient denied eye patching due to professional reasons. As an alternative treatment a large diameter bandage soft contact lens approved for extended wear was applied ((David Thomas Contact Lens T74/85 Extended Wear/Bandage of 18 mm diameter). The next day corneal dellen had already began to retreat and four days later the contact lens was removed since there was no sign of dellen in the slit lamp examination. In conclusion, the use of a large diameter soft contact lens was an effective alternative solution for the treatment of corneal dellen in our patient.     

基于补丁算法的流媒体代理缓存的研究与实现

对流媒体代理缓存和流调度技术进行了分析与研究，结合代理缓存和补丁算法的优点，设计与实现了一种基于补丁算法的流媒体代理缓存的高效方法。分析和实验研究表明，该方法能进一步减少对骨干网络带宽资源和原始服务器的磁盘I/O资源的占用，提高用户访问请求的响应速度。