摘要：Semiconductor photocatalysts play an indispensable role in the photocatalytic ***-dimensional covalent organic frameworks(2D-COFs),as a kind of innovative photocatalyst,have garnered tremendous ***,we report an amide-linked 2D-COF(COF-JLU19)with outstanding photocatalytic performance in water,designed through a multi-synergistic *** synergistic effects of the high porosity,photoactive framework,high wettability,and stability of COF-JLU19 led to an unprecedented enhancement in the photocatalytic activity and recyclability in water upon illumination by visible *** importantly,amide-linked 2D-COF based electrospinning membranes were prepared,which also exhibited superior photocatalytic activity for the degradation of Rhodamine B in water with *** study highlights the potential of the multi-synergistic approach as a universal rule for developing COF-based photocatalysts to address environmental and energy challenges.

摘要：目的总结分析医学科技计划项目开展的现状、存在的亮点及问题,提出相应的发展策略建议。方法本研究采用横断面研究设计,分析2016—2021年深圳市立项的医学科技计划1880项基本情况以及2016—2017年已结题558个项目的绩效产出数据。结果2016—2021年度医学科技计划项目共立项资助1880项,共依托97家单位,总资助金额累计10亿,增长百分比93.9%。基础研究专项占资助项目总数93.4%,资助总金额6.1亿,占总项目资助金额60.3%。医学科技计划中医疗卫生机构类项目总计1692项,其中基层机构及区级医疗机构(未定级、一级、二级)资助力度较小,立项比例为7.2%,资助金额仅占医疗卫生机构类总金额3.0%。2016—2017完成结题项目558项,绩效指标包括发表文章、培养人才、科技奖以及专利申请数量,总计培养人才762名,申请专利448项,专利授权184项,发表论文2061篇。结论医学科技计划项目加强规划临床研究专项,建立多层级临床研究中心体系,完善科技项目管理各个环节机制、分层分类管理,强化科技成果转化应用四方面的支撑,逐步转向临床研究新方向。

摘要：The past 5 years have witnessed the rapid development of organic solar cells based on nonfullerene acceptors(NFAs)[1-26].The state-of-the-art NFA-based single-junction and tandem solar cells afforded 18.22%(certified 17.6%)and 17.36%(certified 17.29%)power conversion efficiencies(PCEs),respectively[27,28].Wide-bandgap(WBG)polymer donors are ideal partners for *** present complementary absorption with that of low-bandgap NFAs and deep the highest occupied molecular orbital(HOMO)***,solar cells based on a WBG polymer and a NFA can generate high short-circuit current density(Jsc)and open-circuit voltage(Voc)[29].Meanwhile,some WBG polymers show high crystallinity and mobility,gifting the solar cells high fill factors(FF)[30].Recently,our group first reported efficient WBG D-A copolymer donors based on fused-ring aromatic lactone(FRAL)acceptor units.

摘要：设计了一款采用波前编码技术的虹膜采集光学系统,以实现大景深、自然非约束状态下的成像.以传统的光学系统评价指标斯特利尔比和能量集中度作为波前编码系统的成像特征,利用ZEMAX软件对波前编码系统进行设计,权衡了离焦不敏感性和图像可恢复性.比较了带有立方相位编码板和带有修正项的立方相位编码板的虹膜采集系统以及传统系统的焦深延拓效果.发现采用立方相位编码板的虹膜采集光学系统的焦深延拓效果最佳,其焦深是传统系统的8倍.该系统增大了虹膜采集的距离,对于自然状态虹膜成像系统设计有一定的参考价值.

摘要：永久磁铁和常导线圈构成的混合式悬浮系统,悬浮能耗小,可实现大气隙悬浮。本文建立了该混合悬浮系统的数学模型,分析了它的一些性质,采用定气隙控制指标,设计了使系统稳定的控制器,并对所设计的控制器进行了仿真。仿真结果表明,这种混合式悬浮系统可以通过控制实现大气隙、低能耗的稳定悬浮。

摘要：针对高压天然气管道分输站场用过滤分离设备性能评价和设备选型的要求,利用小孔节流效应设计了适合高压管道取样用减压装置,在此基础上提出了高压天然气管道内粉尘在线检测方法。采用数值计算与现场试验相结合的方法,验证了粉尘在线检测方法,结果表明减压装置减压过程中无液滴析出、对粉尘浓度和粒度分布影响小,在线检测方法检测结果准确可靠。

摘要：介绍了IEC60044-8和IEC61850中规定的电子式互感器数字输出接口的特性,并设计了一种基于以太网的通信模块以实现此功能。该方案采用基于单片机的嵌入式硬件平台,利用RTL8029AS实现以太网物理层和链路层的大部分功能,并采用TCP/IP协议进行数据传输和系统维护,具有设计简单、维护方便、传输速率快等优点,能够满足变电站自动化、网络化发展对电子式互感器的要求。

摘要：The polysulfide shuttling and sluggish redox kinetics,due to the notorious adsorption-catalysis underperformance,are the ultimate obstacles of the practical application of lithium-sulfur(Li-S)*** carbon-based and transition metal compound-based material solutions generally suffer from poor catalysis and adsorption,respectively,despite the performance gain in terms of the ***,we have enhanced polysulfide adsorptioncatalytic capability and protected the Li anode using a complementary bimetallic carbide electrocatalyst,Co3 Mo3 C,modified commercial *** this demonstration,the potentials of bimetal compounds,which have been well recognized in other environmental catalysis,are also extended to Li-S *** with this modified separator,a simple cathode(S/Super P composite)can deliver high sulfur utilization,high rate performance,and excellent cycle stability with a low capacity decay rate of^0.034%per cycle at 1 C up to1000 *** at a high S-loading of 8.0 mg cm^-2 with electrolyte/sulfur ratio=6 m L g^-1,the cathode still exhibits high areal capacity of^6.8 m A h cm^-*** experimental analysis and the first-principles calculations proved that the bimetallic carbide Co3 Mo3 C provides more binding sites for adsorbing polysulfides and catalyzing the multiphase conversion of sulfur/polysulfide/sulfide than monometallic carbide Mo2 ***,the modified separator can be reutilized with comparable electrochemical *** also showed other bimetallic carbides with similar catalytic effects on Li-S batteries and this material family has great promise indifferent energy electrocatalytic systems.

摘要：提出了一种基于Rogowski线圈和精密电容分压器的组合电子式互感器.该互感器具有符合IEC60044-7和IEC60044-8要求的数字接口和低能模拟接口,同步时钟的运用保证了多路传感器的工作同步,高压端电路的微功耗设计提高了系统运行的可靠性和稳定性.实验证明系统满足0.2级互感器的要求,同步数字接口的设计满足变电站监测系统对实时性和可靠性的要求.

摘要：配有弯起钢筋的简支梁算例证明,在钢筋混凝土有限元计算中为得到合理的裂缝分布与裂缝宽度,需顺裂缝走向划分网格。当配筋复杂时,采用分离式单元模型计算裂缝分布是困难的。结合现有分离式和组合式钢筋混凝土有限单元模型的优点,推求了一种新的组合式单元模型。该模型既能模拟钢筋与混凝土之间的粘结滑移,较正确地得到裂缝分布与裂缝宽度,又能使混凝土网格划分不受钢筋位置的影响。拉拔构件、配有弯起钢筋简支梁和水电站蜗壳等算例表明,该模型网格划分方便、计算精度高,可用于工程设计。