“水不漏”在水池堵漏中的应用

通过某水厂水池工程施工实例，介绍“水不漏”在水池渗漏水处理施工工艺中的应用。     

管式空气预热器漏风和堵塞的原因及处理

空气预热器是回收烟气余热的主要设备，预热器漏风与堵塞对锅炉燃烧影响较大，且不可避免。文章结合梅山能源公司2号锅炉在2009年6月份的大修，分析了锅炉空气预热器漏风及堵塞的原因以及对锅炉燃烧效率的影响，并找出处理的方法。     

Games of Climate Change with International Trade

We analyse games of greenhouse gas emission reduction in which the emissions and the emission reduction costs of one country depend on other countries' emission abatement. In an analytically tractable model, we show that international trade effects on costs and emissions can either increase or decrease incentives to reduce emissions and to cooperate on emission abatement; in some specifications, optimal emission reduction is unaffected by trade. We therefore specify the model further, calibrating it to larger models that estimate the costs of emission reduction, trade effects, and impacts of climate change. If trade effects are driven by total emission reduction costs of other countries cooperation is slightly more difficult than in the case without trade effects. If trade effects are determined by relative emission reduction efforts in other countries, cooperation becomes easier. Carbon leakage does not affect our qualitative insights, although it does change the numbers.     

HCs商用制冷装置中工质泄漏对系统性能影响的实验研究

碳氢化合物作为自然工质已逐渐成为氟利昂的替代物。本文对R290／R600a在蒸汽压缩循环制冷系统中不同部位(蒸发器的进口、冷凝器的进、出口)发生的泄漏以及系统充灌量不足时的情况进行了实验研究。通过分析认为,蒸发器入口发生的气相泄漏为最不利的泄漏情况,系统内工质质量严重不足也会使得系统不能正常运行。     

隆林县卡达水库大坝灌浆施工实践

文章对卡达水库的帷幕灌浆施工实践进行分析，总结在地质条件较复杂的库区内进行帷幕灌浆施工如何确保质量和安全的方法。     

水库大坝白蚁危害及其防治新技术

白蚁是地球上最古老的昆虫之一,至今已生存了2.5亿年。在我国很多地区,白蚁对房屋建筑、水库堤坝、农林生产、通信电缆、交通设施、图书档案等各个领域造成了严重的危害。白蚁危害隐而难察,水库土坝被白蚁掏空坝体是我国南方地区一些中小型水库经常遇到的问题。文章从白蚁危害现状着手,通过对＂复合土工膜＂防治办法和采用灌浆处理法2种方法进行对比后得出结论,在中小型水库中采用灌浆处理法可有效地堵塞白蚁掏洞造成的漏水通道,解决蓄水难题。     

小洼油田井口密封胶圈漏失原因分析

针对小洼油田生产现场的密封胶圈使用情况进行分析,找出了造成密封胶圈频繁漏失的主要原因,为同类稠油油田现场管理提供参考。     

加氢裂化装置节能对策探讨

加氢裂化原料逐渐重质化、劣质化,带来3种不利因素:一是腐蚀增加,尤其是氢气阀门内漏造成氢气浪费;二是易于结垢,对原料油高压换热器运行带来潜在的不利因素;三是燃料用量上升。因此重视和积极实施节能对策,对加氢裂化装置的长周期运转起着决定性的作用。文章对加氢裂化装置历年来采取的节能新技术、新装备和新举措进行了回顾总结。     

An airline's management strategies in a competitive air transport market

Over the last decade, the demand for domestic and international flights in Korea has increased substantially. To meet the strong flight demands, several low cost carriers have begun to offer flight services. In addition, full service carriers have been motivated to establish their own subsidiary low cost carriers to maintain their market share against rival low cost carriers. This paper studies the management strategies of three kinds of airlines - full service carrier, its subsidiary low cost carrier and rival low cost carrier - based on game theory in the competitive air transport market. Each airline is assumed to act as a player and chooses strategies regarding airfare, flight frequency, and the number of operating aircrafts for specific routes while maximizing its own profits. Demand leakages between the airlines are considered in the flight demand function according to the selected strategies of all airlines. Through various game situations reflecting realistic features, this study provides managerial insights that can be applied in the competitive air transport market.     

老口工程泄水闸坝坝基主要工程地质问题及评价

广西郁江老口航运枢纽工程泄水闸坝坝基岩石具有岩性较软,抗压强度低,软弱夹层较发育,泡水膨胀、失水易开裂等特点。坝基泥岩类岩石存在承载力偏低、快速风化、抗滑稳定、软硬夹层对基础变形的影响等工程地质问题。通过大量的勘探、试验手段,基本查明了泄水闸坝坝基岩体的特性、规律,为水工设计解决这些工程地质问题提供了较为准确、科学的地质参数及处理建议。