污泥处理技术的现状及发展探讨

在大量调查研究的基础上，概述污泥处理技术的现状，介绍了污泥处理技术的发展及相关的检测控制仪表、仪器的重要性，经分析各类设备、机械的优劣，提出了规模经营、综合利用的新思路。     

中等城市地下空间开利用及其前景

我国现有地级以上城市１８８个，除少数大城市外，大部分为中等城市。研究和探索中等城市地下空间的开发利用，应该作为城市建设工作的一个重要课题。本文以镇江市为例，就我国中等城市地下空间的开发利用及其前景展望，提出一些意见和看法。     

预应力转换桁架的工程实践

本文结合厦门市某预应力转换桁架的工程应用实例,探讨了预应力转换桁架的受力特点、设计计算及配筋以及施工与构造等问题,可为其它工程中预应力转换桁架的应用提供参考。     

“天梁抬吊托梁拆柱”施工技术总结

本文对利用“天梁抬吊荷载转移法”将厂房个别重型排架柱拆除,并换上托架梁支承屋架荷载的施工实例进行总结,以为类似工程之参考。     

地形数据的尺度效应对航迹规划的影响研究

对航迹规划地形建模中理想分析尺度的选择问题进行了研究。将DEM地形参数的计算值与真实值相比较,分析各种条件下尺度效应对飞行器航迹规划中地形参数分析的影响,结果表明航迹规划中应充分考虑地形因素,进行相关性分析后选择适应的尺度。     

模拟现场试验测定氟虫腈粉剂对散白蚁的毒性传递性

采用模拟现场试验测定了氟虫腈粉剂对散白蚁的毒性传递性,结果表明,喷粉处理白蚁的数量占群体的比例≥4％,且氟虫腈粉剂浓度在0．10％～0．50％之间时,毒性能有效传递到2m外的个体。     

低碳中铬钢在模拟CO2-EOR环境下的腐蚀行为

 为了研究Cr5和Cr7(质量分数/%)钢在CO₂-EOR高温高压服役条件下的腐蚀机理,利用高温高压反应釜模拟其腐蚀行为,使用失重法测定了腐蚀速率,采用SEM、EDS、XRD和XPS等手段对腐蚀产物进行了观察与分析,探讨了试验钢在CO₂条件下的腐蚀机理,并提出了腐蚀模型。研究结果表明,Cr5钢的腐蚀速率为0.734 75 mm/a,Cr7钢的腐蚀速度为0.217 32 mm/a;腐蚀产物均由外层的FeCO₃晶体以及内层的非晶态FeCO₃和Cr(OH)₃组成;腐蚀初期,产物膜以原位形成和阳极溶解后逐渐沉积两种途径生成;产物完全覆盖基体后,离子在界面处的扩散后沉积成为产物膜生长的主要途径。     

First evidence for the reliability of building co-heating tests

This paper provides powerful evidence empirically demonstrating for the first time the reliability of the co-heating test. The test is widely used throughout Europe to measure the total heat transfer through the fabric of buildings and to calculate the heat-transfer coefficient (HTC; units W/K). A reliable test is essential to address the ‘performance gap’, where in-use energy performance is consistently, and often substantially, poorer than predicted. The co-heating test could meet this need, but its reliability requires confirmation. Seven teams independently conducted co-heating tests on the same detached house near Watford, UK. Despite differences in the weather and in the experimental and analytical approaches, the teams’ final reported HTC measurements were within ±10% of the mean. With further standardization it is likely to be possible to improve upon this reproducibility. Furthermore, uncertainty analysis based upon a 95% confidence interval resulted in an estimated uncertainty in HTC measurements of ±8%. This research addresses persistent doubts about the reliability of the co-heating test. Avenues to further improvement of the test are discussed. This work helps to enable the test’s wider adoption as a component of the regulatory process and thus improvements to standards of house construction.     

The perils of foreign intervention: the Nile perch disaster for Lake Victoria

The present study involved the use of a pilot scale water treatment plant to treat turbid surface water from a stream using processed Moringa oleifera seed and alum as primary coagulants. At low initial turbidity of 21.5 to 49.3 NTU, residual turbidities of 2.7, 1.8 and 1.4 NTU were achieved after treatment using Moringa oleifera, alum, and alum with Moringa oleifera as coagulant‐aid, respectively. For medium turbidities varying from 51.8 to 114 NTU, lowest residual turbidities of 2.9, 1.2 and 1.4 were achieved after treatment using Moringa oleifera, alum, and alum with Moringa oleifera as coagulant‐aid, respectively. For high turbidity varying from 163 to 494 NTU, minimum residuals of 1.4, 1.9 and 0.9 NTU were achieved after treatment using Moringa oleifera, alum, and alum with Moringa oleifera as coagulant‐aid, respectively. The proposed mechanism for turbidity removal by Moringa oleifera seed in this study is a combination of partial‐charge neutralization and micro‐bridging or an electrostatic patch mechanism based on the results of zeta potential measurements.     

适应空间需求的帐篷结构选型探讨

在一个帐篷的实体搭建中,通过团队的集思广益,趋利避害,择优选择出合理的结构形式。并通过默契的分工合作,按时完成了搭建。通过小活动展开了对实际项目的结构探讨,说明了工程尺度和建筑结构选择的密切关系。