电子式垂直水平度遥测仪

本文介绍了一种新型的具有极高灵敏度的电子式垂直水平度测量仪，及该仪器的内部结构，电子路线图主要优点，该测量仪的实际应用情况良好。     

合成光敏聚酰亚胺的一种改进方法

均苯四酸二酐和二氨基二苯醚经溶液缩聚得到的聚酰胺酸与异酰亚胺化试剂ＤＣＣ反应制得聚异酰亚胺，进而与光敏剂丙烯酸羟乙酯经开环反应合成了光敏聚酰亚胺树脂。     

含肉桂基的光敏聚酰亚胺的研究光敏树脂的合成

本文论述了一种含肉桂基的负性光敏聚酰亚胺预聚体的合成与分析.研究确定了均苯四酸二酐与肉桂醇开环反应的适宜介质、反应温度与时间.对于二元酰氯与二元胺在 N—甲基吡咯烷酮(NMP)溶剂中进行低温缩聚合成光敏树脂的过程进行了研究.此外,用红外、紫外、凝胶渗透色谱、元素分析等手段对光敏树脂的组成与某些结构性能进行了表征.根据元素分析的结果用微机程序进行了酯化值的测算,在此基础上,推定了光敏树脂的结构.     

New positive-type photosensitive polyimide having sulfo groups

A new positive-working photosensitive polyimide (PSPI) has been developed, which is based on polyimide bearing sulfo groups (PIS) and 1-{1,1-bis[4-(2-diazo-1-(2H)naphthalenone-5-sulfonyloxy)phenyl]ethyl}-4-{1-[4-(2-diazo-1(2H)naphthalenone-5-sulfonyloxy)phenyl]methylethyl}benzene (S-DNQ) as a photosensitive compound. PIS was prepared by ring-opening polyaddition of 1,3-phenylenediamine-4-sulfonicacid (PDAS), 4,4′-oxydianiline (ODA), and 4,4′-hexafluoropropylidenebis(phthalic anhydride) (6FDA), followed by thermal cyclization in m-cresol. PIS containing 30 wt% of S-DNQ showed a sensitivity of 100 mJ cm⁻² and a contrast of 1.7, when it was exposed to 365 nm light followed by developing with 2.38 wt% aqueous tetramethylammonium hydroxide (TMAH) solution at room temperature. A fine positive image featuring 10 μm line and space patterns was observed on the film of the photoresist exposed to 200 mJ cm⁻² of UV-light at 365 nm by the contact mode. The positive image was successfully converted to the polyimide pattern by thermal treatment.     

聚氨酯型光敏树脂预聚体合成进展

本文介绍了聚氨酯型光敏树脂预聚体的各种结构类型及合成方法，并简要说明了各类预聚体的基本性能和用途。     

破碎燃烧高能气体压裂装药损伤对DDT行为的影响

概述了以高氯酸铵为基的丁羟复合推进剂(CCCF复合推进剂)模拟损伤试验及损伤状态对其燃烧稳定性和燃烧转爆轰特性(DDT行为)的影响。分析了装药在不同损伤状态下的密闭爆发器实验结果。发现CCCF复合推进剂在无外部约束条件下意外点火，通常不产生DDT行为。但在油气井中可能产生DDT行为。     

转炉钢水过氧化原因分析及危害

从溅渣护炉操作、产品质量、冶炼成本三方面阐述了钢水过氧化现象带来的危害，并就造成过氧化现象的原因进行了较为系统的分析，指出原材料供给、生产组织、工艺路线及工艺制度存在的局限性，提出了相应看法和改进措施。     

Safeguarding and retrofitting works at the UNESCO World Heritage Site Takht‐e Soleyman,Iran

This article reports on the works safeguard in 2016 to secure the UNESCO World Heritage Site at Takht‐e Soleyman in the province of West Azerbaijan in the northwest of Iran. The site includes a fire temple and dates back to the sixth century AD. The complex was transformed by the Ilkhanids in the 13th century with extensive repair and building measures. From the 15th century, the complex was abandoned and decayed. In the 1970s, the north wall of the Western Eivan was first secured with steel scaffolding. The Chair of Structural design at the TU Dresden undertook works in 2016 to stabilise the Western Eivan in collaboration with the Iranian cultural heritage organisation (ICHHTO) and with financial support from the cultural maintenance programme of the Federal Foreign Office of Germany. The preliminary investigations until now and the work to the structure planned for 2018 are described below.     

基于挠度法的钢筋混凝土简支梁损伤识别研究

根据静、动载作用下的简支梁挠度数据,求解了结构的挠度差曲率和,对受拉钢筋局部锈蚀混凝土简支梁的损伤识别进行了研究,理论分析和有限元仿真表明:该方法可以识别结构的损伤位置和损伤程度,提高简支梁检定的准确度.     

青岛电网输电线路鸟害故障分析与防范措施

针对青岛电网输电线路2007年至今发生的跳闸进行分类统计,分析发现青岛电网鸟害在35 kV电压等级线路设备发生的概率远低于110 kV线路和220 kV线路;鸟巢短路是35 kV线路鸟害故障的主要原因,鸟粪闪络是110 kV和220 kV线路鸟害故障的主要原因;鸟害故障总体上有两个高发期:3-5月的05∶00-12∶00和8-11月的02∶00-06∶00。提出鸟害分布图量化绘制方法,根据鸟害系数修正专业化巡视周期和防鸟害综合治理措施,研究结果可为输电线路运行维护中防鸟害工作提供参考。