PPSK／PPS共聚物的合成及其初步研究

用４，４＾’－二氟苯酮、１，４－二氯苯和硫化钠为原料，常压下采用分开预聚和共预聚两种不同的预聚方式，合成了聚苯硫醚酮－聚苯硫醚共聚物。用红外光谱、Ｘ射线衍射、差示热扫描和热失重分析等手段，对共聚物进行了初步表征。结果表明，不同配比的共聚物均为结晶性高聚物，并且具有良好较好的耐热性能，对于可溶性的共聚物还测定了其对数比浓粘度。     

冗余自由度机器人研究

本文研究冗余自由度机器人。文中阐述了冗余自由度机器人研究的理论基础;介绍其机械机构设计;重点讨论计算机多机控制系统的组成与实现,并给出一种实时控制算法。     

聚苯硫醚酮酮的合成及其表征

以１，４－二（４’－氟代苯甲酰基）苯和硫化钠为原料，在极性有机溶剂中常压下合成了聚苯硫醚酮酮。用元素分析、红外光谱、核磁共振谱、Ｘ射线衍射以及热分析等方法对聚合物进行了表征，并测定了聚合物的溶液粘度。结果表明，聚苯硫醚酮酮是一种高熔点、高热稳定性的结晶性聚合物。     

机器人动力学Lagrange方程的新形式及其算法研究

本文给出了 Lagrange-Eulcr 方程在机器人动力学分析中的一种新的表达形式,研究了这种新形式在多自由度机器人动力学分析与计算中的实用算法,并讨论了算法的计算效率.     

A solid-state dye-sensitized solar cell based on a novel ionic liquid gel and ZnO nanoparticles on a flexible polymer substrate

This paper describes a new strategy to make a full solid-state, flexible, dye-sensitized solar cell (DSSC) based on novel ionic liquid gel, organic dye, ZnO nanoparticles and carbon nanotube (CNT) thin film stamped onto a polyethylene terephthalate (PET) substrate. The CNTs serve both as the charge collector and as scaffolds for the growth of ZnO nanoparticles, where the black dye molecules are anchored. It opens up the possibility of developing a continuous roll to roll processing for THE mass production of DSSCs.     

Topotactic reduction of layered double hydroxides for atomically thick two-dimensional non-noble-metal alloy

Layered double hydroxides (LDHs) have been widely used as catalysts owing to their tunable structure and atomic dispersion of high-valence metal ions; however, limited tunability of electronic structure and valence states have hindered further improvement in their catalytic performance. Herein, we reduced ultrathin LDH precursors in situ and topotactically converted them to atomically thick (~2 nm) two-dimensional (2D) multi-metallic, single crystalline alloy nanosheets with highly tunable metallic compositions. The as-obtained alloy nanosheets not only maintained the vertically aligned ultrathin 2D structure, but also inherited the atomic dispersion of the minor metallic compositions of the LDH precursors, even though the atomic percentage was higher than 20%, which is far beyond the reported percentages for single-atom dispersions (usually less than 0.1%). Besides, surface engineering of the alloy nanosheets can finely tune the surface electronic structure for catalytic applications. Such in situ topotactic conversion strategy has introduced a novel approach for atomically dispersed alloy nanostructures and reinforced the synthetic methodology for ultrathin 2D metal-based catalysts.

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虹桥开发区的一颗绿宝石——新虹桥中心花园绿化景观设计

上海的城市绿化建设在这3年中有了飞速的发展,市区的大型公共绿地如雨后春笋般地相继出现,上海的环境变美了。上海人向往的回归自然、生活在花园中的梦想将要变成现实,而新虹桥中心花园(见下图)便是众多绿地星河中的一颗璀灿夺目的绿宝石。 虹桥经济技术开发区的建设起步于1985年,经过10多年的建设,高楼拔地而起,道路宽畅平坦,开发区取得了令人瞩目的成就,但缺少一块大型公共     

Disaccommodation in Fe-Ni Based Amorphous Alloys

The disaccommodation of magnetic per-meability,specific magnetization and linearmagnetostriction of amorphous(Fe_xNi_(1-x))_(76)-Si_8B_(16)alloys were measured.It was found that thedisaccommodation obtained at lower temperature isa monotonically decreasing function of Fe content,however,a peak is observed at higher temperature.The experimental results are discussed on the basisof magnetostrictive interaction and atomicdirectional ordering.     

在CAI课件设计中探索创建新的自主学习模式

课件设计者应重视学习现代科学的学习理论,并以其为指导,在CAI课件设计中积极探索创建新的自主学习模式,从而让CAI课件成为辅助学生个性化学习的有力工具。本文提出了基于主导—主体教学设计模式的边学边练模式,并成功地用于实践。     

80C196在气弹簧性能测试器中的应用

本文介绍了采用８０Ｃ１９６单片机作为中心智能部件，在气弹簧性能测试器的电气控制部分、数据采集和前置数据处理部分中的应用。