离心流化床干燥器研究进展

综述离心流化床干燥器的原理、设备结构、基础理论研究等方面的进展情况     

基于无线传感器网络的电力变压器监测系统

项目将无线ZigBee技术和GPRS技术相结合,设计了基于ZigBee和GPRS的电力变压器监测系统,提出了以ZigBee无线传感器网络为核心,以GPRS移动网为骨干网,采用CC2430芯片为电力变压器信号采集节点的方案。本设计既实现了系统的灵活性,也解决了由于ZigBee是一种近距离传输技术而使监测数据传输不远的问题,是一种技术结合的创新,在监测领域将有广阔的应用前景。     

Characterization of dual-periodic structures with optical scattering

Laser scattering method as a non-contact method provides an opportunity to real-time monitor the evolution of periodic nanostructures during fabrication, e.g. when the surface is irradiated with a focused ion beam. Using the method, the diffraction angle needs calibrating according to the grating equation. In this paper, we used scalar analysis to demonstrate the use of a dual-period structure for formation of dual spectral peaks at the 1st diffraction order. We then made use of numerical study based on rigorous coupled-wave analysis to optimize these Al-grating structures in terms of depth. It is found that dual-peak wavelengths can be selected by using different angles of incidence and low-loss reflection is obtained using an optimized structure. It is further proposed that these wavelengths can be used to determine the diffraction angle during fabrication without the need for pre-calibration of an optical scattering system.     

TRIZ TECHNOLOGY FORECASTING AS QFD INPUT WITHIN THE NPD ACTIVITIES

As a result of the fierceness of business competition, companies, to remain competitive,have to charm their customers by anticipating their needs and being able to rapidly develop excitingnew products for them. To overcome this challenge, technology forecasting is considered as a pow-erful tool in today's business environment, while there are as many success stories as there are fail-ures, a good application of this method will give a good result. A methodology of integration ofpatterns or lines of technology evolution in TRIZ parlance is presented, which is also known asTRIZ technology forecasting, as input to the QFD process to design a new product. For this purpose,TRlZ technology forecasting, one of the TRIZ major tools, is discussed and some benefits comparedto the traditional forecasting techniques are highlighted. Then a methodology to integrate TRIZtechnology forecasting and QFD process is highlighted.     

一个领域消息驱动的Takia CQRS模型设计

随着企业级应用平台开发和设计的业务需求不断增长与扩大,应用系统对数据库处理效率的依赖也日渐增强。业务系统之间复杂的桥接关系,不但使业务逻辑变得更加复杂而难于解耦,也使数据访问效率变得低下。为此,实现一个基于领域消息驱动的DDD插件Takia,在不影响目前系统架构的基础上,完全兼容DDD设计,通过CQRS查询与命令分离的消息通信机制,有效地解决系统解耦问题,为企业信息系统的DDD建模提供有力的支撑。同时,这种模型不但在数据库处理效率上进行了大力提升,而且其系统稳定性也得到大幅度的改善。     

Optimum toughening via a bicontinuous blending: toughening of PPO with SEBS and SEBS-g-maleic anhydride

The poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) was toughened by melt extrusion through its blending with a styrene-b-ethylene/butadiene-b-styrene triblock copolymer (SEBS), or with maleic anhydride (MA) grafted SEBS (SEBS-g-MA). Their morphology, mechanical properties, and rheology have been investigated. Transmission electron microscopy revealed that both kinds of blends had an island-sea structure at low concentrations of SEBS or SEBS-g-MA and a bicontinuous one at sufficiently high concentrations. However, the percolation threshold was higher for SEBS than for the SEBS-g-MA. The Izod impact strength of PPO could be significantly improved through its blending with SEBS-g-MA, particularly in a blend with 20 wt% of SEBS-g-MA at which it had a maximum value. The rheological experiments indicated that the incorporation of SEBS increased and that of SEBS-g-MA decreased the melt viscosity of the system.     

质子交换膜燃料电池研究进展

介绍了燃料电池的工作原理及目前世界上主要燃料电池的主要特性;综述了质子交换膜燃料电池(PEMFC)的主要基础研究进展;简单介绍了PEMFC关键部件的研究方向。     

Naked eye detection of glutathione in living cells using rhodamine B-functionalized gold nanoparticles coupled with FRET

In this study, functionalized gold nanoparticles, in combination with fluorescence resonance energy transfer (FRET), was utilized to visually detect glutathione (GSH) in aqueous samples and then demonstrated its applicability by estimating GSH level in living cells. We first modified the Au NPs with rhodamine B (RB), ON state of FRET, using the electrostatic interaction. In the presence of GSH, the competitive reaction between RB-functionalized nanoprobes (RB-Au NPs) and GSH caused the release of RB molecules from Au NP surface, OFF state of FRET, which was monitored simply by the naked eye. Fluorescence spectra and UV-vis absorption spectra were employed to investigate the spectroscopic characteristics of nanoprobes. Furthermore, the assay conditions, such as nanoprobe concentration, reaction time and the influence of interferent, were investigated. The visible color change of RB-Au NPs solution from dark blue to red in the presence of GSH was observed when the GSH concentration exceeded 10 μM. This one-step naked eye detection depicted here successfully applied for the sensing of human hepatoma (HepG2) intracellular GSH level, showing the potential use in clinical nanodiagnosis. This method allows the rapid colorimetric detection of intracellular GSH without any preliminary treatment and specific instruments.     

布依旗石头建筑及其文化意蕴

在云贵高原山峦叠嶂的群山中，世代聚居着一支古骆越民族的后裔，一个近300万人 的布依民族，他们同众多族群一起创造了中华璀璨的文明的同时，也在十里不同俗的文化氛围中存留着自己的语言、服饰、习俗等独具特色的文化意蕴。尤其是石头建筑，作为布依民族生活层面的反映，除了在民族大融合的历史岁月里涵盖着礼俗精髓外，还保留着古代先民们“干栏式”深邃的象征意义。布依族的石头建筑，不仅是布依先民智慧结晶的再现，也是布依族文化重要组成部分的表达。     

汉源县第四中学

汉源市第四中学位于四川省雅安市汉源县大树镇．是一所农村寄宿制普通初级中学。基地位于大树新集镇的西北端．处于新集镇的地势最高处。南侧与镇小学相隔．东南侧为新规划道路周围以居民区为主．基地目前为原生态自然风貌的山体。