旧住区人口老龄化与环境的适应性改造

选择兴建于20世纪50年代中期的上海同济新村作为研究案例,对旧住区人口老龄化和环境老化的现状进行了论述,研究了老年人对住区环境空间的需求,提出了与人口老龄化相适应的旧住区环境的改造策略。     

一种母线PT电压空开检修基座的研制

母线电压互感器(PT)电压空开发生故障时,需要冗长的倒闸操作才能进行空开检修,严重影响了异常电压的恢复时间。基于回路并接原理,提出一种带电更换PT电压空开的检修基座。该文阐述了装置原理的三个组成部分,进行了元件选型、装置搭建和操作流程编制的设计。经过仿真变的功能测试和变电站的现场安装,该装置能够在不倒闸操作的前提下更换缺陷电压空开,精简了检修工作的流程和时间,极大地降低了此类空开故障对电网运行带来的风险。     

探讨用火花间隙检测劣质盘形瓷质绝缘子的方法

用火花间隙带电检测劣质盘形瓷质绝缘子应该从绝缘子串的横担侧逐片向导线侧检测,还是从导线侧向横担侧检测,目前没有统一的规定。探讨带电作业的理论和经验,认为应该从横担侧逐片向导线侧检测为好。该建议可对有关部门制订统一的、安全合理的用火花间隙带电检测劣质盘形瓷质绝缘子的规定提供参考。     

110kV电力线路钢管杆悬垂绝缘子串带电更换研究

针对110kV电力线路钢管杆的表面光滑、杆上检修作业空间狭窄、利用常规带电作业方法难以进行绝缘子串更换的难题,研究出对使用占比最高的3种悬垂绝缘子串挂点型式的带电作业方法和作业工具。阐述了该作业方法和作业工具的研究思路和操作步骤。通过在厦门地区的实际应用证明了该作业方法的有效性。     

Whqs-500型HVDC换流站带电清扫装置性能试验

对HVDC换流站使用的Whqs．500型直流污秽带电清扫装置的绝缘杆、绝缘软管（含清洗液）、绝缘绳等三大部件进行电气和机械性能试验,验证了各部件的安全性。对装置整机进行耐压和泄漏电流试验,验证了装置的整机安全性。现场实际运行试验表明,该带电清扫装置操作灵活方便,清扫效果良好,可以实现对带电HVDC换流站内污秽支柱绝缘子的清扫。     

Investigation of antimicrobial properties and in-vitro bioactivity of Ce3+-Sr2+dual-substituted nano hydroxyapatites

Dual doped calcium apatite has been widely focused as it enhances the osteoconductive property for the possible applications in orthopedic and dental implants. In this work, we investigate the antimicrobial and bioactive properties of cerium/strontium (Ce³⁺/Sr²⁺) co-substituted hydroxyapatite (HA) nanoparticles synthesized by sol-gel assisted precipitation method. The structure, morphology, functional groups, photoluminescence, and thermal stability of the developed systems are examined. The comparative studies performed among the pure HA, Sr²⁺, and Ce³⁺-substituted HA nanoparticles illustrate higher antibacterial activity with lowered apatite-forming ability and biocompatibility for the Ce³⁺-substituted HA. However, the Ce³⁺/Sr²⁺co-substituted HA exhibits better biocompatibility, apatite-forming ability, and good antimicrobial properties. Sr²⁺ ion inclusion leads to better biological properties and compromise the cytotoxic nature of the Ce³⁺-HA. In addition, the Ce³⁺/Sr²⁺-HA nanoparticles prevent thermal decomposition up to 700°C, pointing also toward the possibility of this co-substituted HA in bone implant applications.     

基于二维活码的计量仪器设备管理系统的应用

针对目前计量仪器设备信息种类多、数据量大、设备检定及维护任务重、管理信息化水平较低等问题,结合质量计量监督检测部门所处具体环境,设计基于二维活码技术的计量仪器设备管理系统,本文分别从系统功能、组成、开发技术应用效果等方面进行论述,该系统能有效地提高了相关人员的工作效率,为各检测机构的设备管理工作提供了可借鉴模式。     

A simple and stable autofocusing protocol for long multidimensional live cell microscopy

Focus maintenance is a challenging problem in multidimensional wide‐field microscopy. Most automated microscopes use software algorithms, which are applied to z‐sections of the object, to select for the plane with the best signal to noise ratio. When applied automatically in multidimensional imaging applications, autofocus routines significantly increase light exposure and can become cytotoxic if applied too frequently. In addition, automated focusing procedures can readily focus on unwanted high contrast objects. By labelling a defined position with a fluorescent marker, we were able to separate the focusing procedure from the actual image acquisition positions and therefore overcome some of the major drawbacks of routine autofocus procedures. To implement this method in a multidimensional acquisition experiment, we created a visual basic‐based program, which is run prior to each image acquisition. This technique allows tight control of focus whilst keeping light toxicity in live cell imaging experiments to a minimum.