利用天然生物分子合成导电聚苯胺的研究

本文综述了利用多种不同的天然生物分子如蛋白质(包括酶和氨基酸)、糖类、核酸、多巴胺和柠檬汁等为模板合成导电聚苯胺的研究进展。本文首先介绍了这些天然生物分子对产物聚苯胺的手性、导电率、形态以及其它方面性质的影响,归纳了利用天然生物分子合成导电聚苯胺的研究进展,然后分析了导电聚苯胺合成过程中面临的问题并对该领域的未来发展进行了展望,以期为制备性质优良和环境友好的新型导电聚苯胺材料提供有益的参考。     

Progress on the application of electrochemiluminescence biosensor based on nanomaterials

In this review, we check out the number of published literature in the field of ECL biosensors trends during nearly a decade, and compare the research status of four different types of biosensors; summarize the application forms of nanomaterials in ECL biosensor. We have an overview of the building patterns and application example of the four main types of biosensors in the paper.     

痕量钒的分析进展

综述近年来测定痕量钒的主要方法,包括光度法如常规光度法、流动注射光度法、催化动力学光度法、萃取光度法、导数光度法以及原子吸收法、荧光法、交流示波极谱法、催化动力学离子选择电极法和流动注射化学发光法等。     

钴的光度分析方法进展

综述了近十多年来国内外钴的光度分析方法,包括分光光度法、催化光度法、原子吸收光度法等。     

Recent progress in nanomaterial-enhanced fluorescence polarization/anisotropy sensors

In this review, we summarize the number of scientific publications in the field of FP/FA sensor in recent five years, and introduce the recent progress of FP/FA sensor based on nanomaterial. The various analytical applications of FP/FA sensor based on nanomaterial are discussed. We also provide perspectives on the current challenges and future prospects in the promising field.     

The role of tangential diffusion in evaluating the performance of flamelet models

For non-premixed combustion, the steady laminar flamelet model (SLFM) and flamelet/progress variable approach (FPVA) are two popular methods for tabulating flamelet manifolds. Even if the two methods are used to tabulate and parameterize the same flamelet database, their results sometimes differ in the subsequent simulation. In this work, a novel perspective is provided to assess the performance of the SLFM and FPVA. Both approaches are compared with respect to their capabilities to capture tangential diffusion (TD) of the thermochemical state variables along iso-surfaces of mixture fraction. The relevance of TD effects is identified using generalized flamelet equations and regimes by comparing flamelet solutions with and without TD terms to a FTC (full transport and chemistry) solution of a well-known non-premixed coflow flame. It is found that TD effects can play an important role in entire mixture fraction space, even in the classical flamelet regime. This suggests that the ability to characterize TD effects is an important performance indicator for tabulation strategies. Thereafter, an a priori analysis is conducted comparing the results from the FPVA and SLFM (using the same flamelet database) with the FTC results. The results show that the FPVA is able to more accurately describe the thermochemical state and the flame structure than the SLFM. For a more detailed assessment of the two tabulation strategies, the TD terms reconstructed from the FPVA and SLFM are compared to those from the FTC results. It is found that the FPVA can capture a significant portion of TD effects, while the SLFM can hardly characterize TD effects. This particular capability allows the FPVA to describe chemistry-transport interaction and flame structure more accurately than the SLFM.     

水资源管理研究进展

加强水资源管理是世界各国为提高水资源利用效率和应对水资源危机的重要举措之一,也是我国解决日益增长的水资源需求和水资源供给不足矛盾的关键。 水资源管理研究的领域较广、范围较大、主题较多,主要从国内外水资源管理的模式与制度、研究模型、研究重点领域以及研究热点四方面进行归纳综述,并以黑河流域为例,说明先进的水资源管理对提高水资源利用效率和应对水资源危机的重要性,可为我国探索水资源管理模式,建立适合国情的水资源管理制度提供科学基础。     

大气气溶胶物理光学特性研究进展

大气气溶胶粒子作为地气系统的重要组成成分之一,在紫外、可见到红外很宽的波段内对辐射传输产生影响,一方面通过对电磁波的散射和吸收作用,导致光波的能量衰减;另一方面则把吸收的能量转化为其本身的热能,起到加热大气的作用.这一过程在直接和间接的辐射气候效应的模拟、激光大气传输、高分辨率光谱研究、地基和空基遥感、大气辐射订正、环境监测技术、目标探测和识别、陆上交通和航空航海都有着重要作用.详细阐述了大气气溶胶物理光学特性近年来的研究进展,为气溶胶科学后续研究工作的更好开展提供参考. 关键词： 大气光学 大气气溶胶 物理光学特性 研究进展     

倏逝波型光纤气体传感器研究进展

介绍了倏逝波的概念和反映倏逝波光纤气体传感特性的穿透深度参数Z_m。讨论了D形、锥形、纤芯裸露形、纤芯失配型和微结构光纤等不同倏逝波型气体传感的原理和特点,评述了其最新研究进展,对比分析了各传感器的优缺点。对倏逝波型光纤气体传感器的发展趋势进行了展望。     

手持技术数字化实验支持下的化学概念教学研究进展*

以“中国知网”数据库发表的手持技术数字化实验支持下的化学概念教学研究主题的期刊论文为研究对象,使用内容分析法,从概念选取、应用价值、应用策略等3个维度综述手持技术数字化实验支持下的化学概念教学的研究进展。最后,基于已有研究,得出相应启示,并提出该领域的研究展望。