台南市运河沿岸地区更新规划

台南运河是全台湾保存最完整的一条内陆运河,近年来由于沿岸地区产业结构的调整,航运功能逐渐淡化,沿岸地区也逐渐衰退.为了让运河再生并促进沿岸地区的复活.台南市政府着手对其进行更新.在更新规划中体现出来的复活机能构思、分段定位和面积控制等理念为其他滨水城市的更新规划提供了借鉴.     

公路桥梁预制中的波纹管防堵控制

对波纹管预应力孔道常见的几种堵塞现象的原因进行了分析,并提出了相应的预防措施,工程实践表明,提出的防堵措施控制效果良好,最终达到防止堵孔现象发生的目的。     

Chitosan impregnated gutta-percha points: antimicrobial in vitro evaluation and mechanical properties

Chitosan-impregnated gutta-percha points (ChitGPP) were tested for their ability to inhibit the growth of microorganisms usually involved in root canal infections. Their mechanical properties were also studied and compared with the commonly used commercial points in endodontics. ChitGPP were more efficient in reducing the microbial load than those without chitosan. ChitGPP also possess better tensile and elastic properties than commercial ones. After six months of storage, ChitGPP’s were still able to reduce the bacterial load by 1 log, suggesting that impregnation of gutta-percha points with chitosan could be a good alternative to obtain gutta-percha points with improved antimicrobial properties.     

厦门市汀溪灌区总干渠洪水复核方法探讨

汀溪灌区作为汀溪水库群的农业供水对象,其灌溉用水量的大小直接关系到汀溪水库群向翔安、同安两区的水资源供需平衡,甚至影响厦门市水资源配置方案。但由于灌溉面积和渠道功能发生变化,有必要进行洪水分析复核从而重新确定工程规模。本文对汀溪灌区总干渠洪水复核方法进行探讨,供参考。     

Influence of EDTA on Demineralization Rate of Dentine： Calcification Treatment in Root Canal Therapy

The aim of this study was to investigate the influence of ethylenediaminetetraacetic acid （EDTA） irrigation on demineralization rate of dentine located in the apical third of root canal walls. Teeth were divided into A and B two groups. In group A, all of the teeth was irrigated with EDTA and NaOCI （sodium hypochlorite）, followed by cutting the apical third into slices longitudinally to examine the influence of EDTA on different portions of apical third of root canal. In group B, the apical third of a tooth was firstly cut into slices longitudinally, followed by coating the root canal walls with EDTA to in-situ observe the demineralization of dentine with different time. It was found that the influence of EDTA on root-canal was gradually increased from the apical to the upper end of the apical third for group A. In addition, the demineralization rate of dentine was remarkable in the first 25 min for group B. The diffusion of EDTA into root dentine would lead to potential damage to the dentine. Furthermore, demineralization rate curve was calculated.     

自体骨粉和颞肌筋膜在中耳乳突手术中的应用

目的 探讨自体骨粉和颞肌筋膜在乳突根治鼓室成形术后乳突腔填充的临床疗效.方法 对2009年7月至2011年10月间经1年以上随访的350例（耳）乳突根治鼓室成形术同时以自体乳突皮质骨粉行乳突填充及颞肌筋膜覆盖、重建外耳道后壁耳道成形的病例进行回顾性分析.结果 乳突填充自体骨粉并用颞肌筋膜叠瓦状覆盖,术后外耳道形态良好,耳道宽敞平滑,愈合时间显著缩短,术后干耳率高、复发率低.结论 自体乳突皮质骨粉在上鼓室及乳突区病灶清除后的处理中是良好的填充材料,颞肌筋膜覆盖可防止骨粉脱落,两者结合有利于术后早期干耳.     

保沧干渠穿越京港澳高速公路顶管施工工艺

在分析工程地质情况的基础上，制定了土压平衡顶管机顶进施工方案，并对顶力进行了详细计算，对施工方案进行了详尽说明，对施工起到了很好的指导作用，取得了良好的施工效果，对类似工程施工具有参考价值。     

浅谈灌区渠道防渗工程管护技术

结合东雷抽黄灌溉工程，探讨了灌区渠道工程原状，分析了渠道防渗层损毁形成的类型和原因，阐述了渠道损毁的修复措施，介绍了渠道工程的改造方案，从而实现灌区水资源的合理配置，保障农村经济的可持续发展。     

Comparison of river and canal water dissolved organic matter fluorescence within an urbanised catchment

Recently, growing interest has been shown in the study of canal water quality, yet no research using continuous fluorescence monitoring to characterise dissolved organic matter (DOM) has been performed. This paper evaluated DOM characteristics at hourly resolution. A comparison was made between canal and nearby urban river fluorescence spectra, to emphasise the specific nature of canal water DOM. Results showed that canal water had a significant proportion of microbially derived DOM, while the urban river had a greater proportion of terrestrially derived fractions. The microbial character of canal water DOM originated from the low flow of water, the nutrients predominance and continuous DOM processing. Hence, DOM fluorescence is invariant over a timescale of days, and recreational navigation and precipitation events have no major influence on DOM characteristics. Our results are expected to be applicable to future research on highly regulated freshwater systems for DOM quantity estimation or for water quality models.