摘要：Photocatalytic oxidative organic reactions are important synthetic transformations,and research on reaction selectivity by reactive oxygen species(ROS)is *** date,however,there has rarely been any focus on the directed generation of ***,we report the first identification of tunable molecular oxygen activation induced by polymeric conjugation in nonmetallic conjugated microporous polymers(CMP).The conjugation between these can be achieved by the introduction of alkynyl ***-A with an alkynyl bridge facilitates the intramolecular charge mobility while CMP-D,lacking an alkynyl group enhances the photoexcited carrier build-up on the surface from *** different processes dominate the directed ROS generation of the superoxide radical(·O_(2)^(-))and singlet oxygen(^(1)O_(2)),*** theory is substantiated by the different performances of these CMPs in the aerobic oxidation of sulfides and the dehydrogenative coupling of amines,and could provide insight into the rational design of CMPs for various heterogeneous organic photosynthesis.

摘要：Porous organic polymers(POPs)are an emerging class of porous materials,having many promising applications in a variety of *** them,covalent triazine frameworks(CTFs)featuring conjugated and porous structures can be well applied in *** achieve high optoelectronic performance,usually the design and synthesis of CTFs based on appropriate building blocks is *** we report the synthesis of two fluorescent CTFs based on typical fluorescent building blocks,in which CTF-Py constructed from a pyrene(Py)building block was reported for the first time,showing prospective applications in the sensing of nitroaromatics with high sensitivity,and photocatalytic water splitting and carbon dioxide reduction with high performance in comparison with other porous organic materials.

摘要：随着我国城市化的不断发展,人们的生活水平也有了很大改善,不管是对生活方式还是居住环境都有着更高的要求,而住宅的景观环境也能反映出我国人民的生活态度和追求,对于现代城市住宅园林景观设计研究也有着非常重要的意义。本文就现代住宅园林景观设计追求的必要性和设计策略进行探讨。

摘要：城市绿地是城市发展的重要表现,而城市的不断发展也势必会促进城市附属绿地的开发,它是城市绿地的重要组成部分,其具有非常强的可塑性,科学合理地规划并开发城市滨河绿地是城市发展的必然要求。本文通过对城市滨河绿地的作用以及特点进行分析,对城市滨河绿地的规划设计提供一些建议。

摘要：发电厂辅机统调动力源系统为非工频小电流接地系统,其单相接地故障常规保护装置及工频小电流接地选线装置均无法正确识别。文中分析了统调动力源系统的运行工况,计算了单母线低频率的极端工况下最小接地电容电流数值,据此提出研制非工频小电流接地选线装置的技术要求,并开发出高精度、能够适应系统频率变化的发电机统调动力源接地选线装置。设计了专用的功能及性能模拟测试电路对装置进行检测,结果表明,该装置完全满足设计要求,投运后运行良好,解决了工程难题。