中天广场主楼爬模,飞模体系的设计和施工

中天广场标准层外梁，外柱和核心筒墙体采用爬模，标准层楼面采用飞模，梁主模板用螺栓拉结，爬模设备为电动提升机，钢模板通过螺栓悬吊于顶上的支载架上，合模时移动模到预定位置，拆模时的松动合膜螺栓，即可移动模板，飞模以梁边界分为成各个飞模单元，飞模由桁架，面板，钢支腿组成，飞模备２套，周转使用。     

混凝土结构火灾后的检测方法研究

本文通过对混凝土结构火灾后的火场温度确定分析以及不同方法检测火灾后混凝土的强度试验，系统地研究了混凝土结构在遭受火灾后的检测方法．提出了一些有效的检测手段。     

基于摇摆核心提升分层装配式钢框架结构抗震性能的设计方法

利用摇摆核心可控制分层装配式钢框架结构在罕遇地震作用下的失效模式。提出了摇摆核心-分层装配式钢框架结构体系的平面布置形式及连接构造。通过参数化非线性时程分析，对摇摆核心刚度对结构最大位移响应及层间位移分布形式的影响进行了分析，结果表明，摇摆核心可以有效控制结构在地震作用下的层间变形模式，且随着摇摆核心刚度的增大，结构的层间变形也越均匀。提出了可以综合考虑结构最大位移响应及结构层间变形模式的结构抗震性能评价参数及摇摆核心需求刚度计算方法。     

利用激光雷达技术制作古建筑正射影像图

为了古建筑的数字化保护和修缮设计,利用激光雷达的方法制作古建筑正射影像图. 讨论了基本原理,论述了数据采集、三维三角网模型构建和正射影像图制作的过程和注意事项,最后制作了古建筑外立面的正射影像图.     

对企业核心竞争力的再思考

目前,国内外关于"企业核心竞争力"的认识比较模糊,可谓仁者见仁,智者见智.美国管理学者Kevin P·Coyne、Stephen J·D·Hall和Patricia Gorman Clifford在麦肯锡高层管理论丛上发表的论文称其为"亦真亦幻的核心竞争力"[1].概念上的模糊,导致了人们认识上的多元化,从而给企业培育、提升核心竞争力制造了障碍,使得企业对如何培育核心竞争力变得无所适从.实际上,核心竞争力是企业竞争力的高级形式,只有一些国际企业发展到了一定层次才能具备.因此,正确理解企业核心竞争力的深刻内涵,弄清企业核心竞争力的形成机理,是指导企业构筑核心竞争力的前提.     

多级复合芯结构的强化沸腾传热研究

采用固相烧结技术制备了均匀多孔层、复合16芯和复合32芯三种多孔结构,并且建立了池沸腾传热测试系统来研究不同芯数量、粒径与结构高度对多孔结构沸腾传热性能的影响。实验结果表明,在测试范围内复合层高1 mm的多孔复合32芯结构传热性能较强,临界热通量(CHF)最高为386 W/cm²,传热系数最高达到9.5 W/(cm²·K)。同时利用高速摄影观察气泡行为来研究强化沸腾传热机理。可视化数据表明,相比于光滑表面,在高热通量下多孔复合表面上气泡周期更短,脱离更快,气泡的离开带来了更多的液体补充,进而不断提升传热性能,获得更高的CHF值。     

植物纤维纸蜂窝制备的环境影响评价

利用CML环境影响评价方法,研究并比较了植物纤维纸蜂窝和传统芳纶纸蜂窝制备的环境影响。结果表明,针对所涉及的11个环境影响指标,植物纤维纸蜂窝低于芳纶纸蜂窝0.68 %~49.41 %;权重化结果表明,植物纤维纸蜂窝制备环境影响总体低于芳纶纸蜂窝18.77 %;制备芳纶纸蜂窝的环境影响主要来自于芳纶纸和电能的消耗;制备植物纤维纸蜂窝的环境影响主要来自于混杂纸和电能的生产。     

干水法制备核壳聚合物微球及其性能评价

以疏水SiO2、单体、引发剂和交联剂为原料,水为溶剂,采用干水法制备核壳聚合物微球PMS@SiO2,分别考察了SiO2疏水性、硅水质量比、搅拌速度和搅拌时间对形成稳定干水微反应器的影响。以过硫酸铵和亚硫酸氢钠为引发剂,N,N''-亚甲基双丙烯酰胺为交联剂,通过正交实验对内核水相发生聚合反应的条件进行了优化。采用傅里叶变换红外光谱仪、热重分析仪、激光粒度仪、扫描电子显微镜和透射电子显微镜对微球的化学结构、热稳定性及微观形貌进行了表征,评价了微球的吸水膨胀性能和调驱性能。结果表明,核壳聚合物微球PMS@SiO2的最佳制备条件为：SiO2-R812S与水相质量比1∶10,搅拌速度12000 r/min,搅拌时间120 s,交联剂用量0.1%（以单体总质量为基准,下同）,引发剂用量0.15%,反应温度50 ℃,反应时间4 h。与常规聚合物微球PMS相比,该微球在90 ℃环境中水化20 d,膨胀倍数约为5.0,具有缓膨特性。物模调驱实验结果表明,PMS@SiO2的封堵率达90.39%,残余阻力系数为10.409,采收率增幅可达34.02%。与PMS相比,其采收率提高了11.89%,具备良好的调驱性能。     

Newly-modeled graphene-based ternary nanocomposite for the magnetophotocatalytic reduction of CO2 with electrochemical performance

The development of CO₂ into hydrocarbon fuels has emerged as a green method that could help mitigate global warning. The novel structured photocatalyst is a promising material for use in a photocatalytic and magneto-electrochemical method that fosters the reduction of CO₂ by suppressing the recombination of electron−hole pairs and effectively transferring the electrons to the surface for the chemical reaction of CO₂ reduction. In our study, we have developed a novel-structured AgCuZnS₂–graphene–TiO₂ to analyze its catalytic activity toward the selective evolution of CO₂. The selectivity of each nanocomposite substantially enhanced the activity of the AgCuZnS₂–graphene–TiO₂ ternary nanocomposite due to the successful interaction, and the selectivity of the final product was improved to a value 3 times higher than that of the pure AgCuZnS₂ and 2 times higher than those of AgCuZnS₂–graphene and AgCuZnS₂–TiO₂ under ultra-violet (UV)-light (λ = 254 nm) irradiation in the photocatalytic process. The electrochemical CO₂ reduction test was also conducted to analyze the efficacy of the AgCuZnS₂–graphene–TiO₂ when used as a working electrode in laboratory electrochemical cells. The electrochemical process was conducted under different experimental conditions, such as various scan rates (mV·s^–1), under UV-light and with a 0.07 T magnetic-core. The evolution of CO₂ substantially improved under UV-light (λ = 254 nm) and with 0.07 T magnetic-core treatment; these improvements were attributed to the facts that the UV-light activated the electron-transfer pathway and the magnetic core controlled the pathway of electron-transmission/prevention to protect it from chaotic electron movement. Among all tested nanocomposites, AgCuZnS₂–graphene–TiO₂ absorbed the CO₂ most strongly and showed the best ability to transfer the electron to reduce the CO₂ to methanol. We believe that our newly-modeled ternary nanocomposite opens up new opportunities for the evolution of CO₂ to methanol through an electrochemical and photocatalytic process.