浅谈VC++多表联合操作的实现方法

介绍了数据库操作的概念及多表联合操作的实现。并通过具体实例提供了VC＋＋6．0环境下使用MFCODBC教据库访问接口实现此方法的步骤和代码。     

Zeolitic imidazolate framework ZIF-67 grown on NiAl-layered double hydroxide/graphene oxide as cathode catalysts for oxygen reduction reaction in microbial fuel cells

In this study, the cathode catalysts for microbial fuel cells (MFCs) were successfully synthesized by two-step feeding method. NiAl-layered double hydroxide (LDH) nanoparticle was attached efficiently on the surface of graphene oxide (GO) in situ, zeolitic imidazolate framework (ZIF-67) was modified on LDH surface layer; Highly crystalline NiAl-LDH/GO@ZIF-67 composite was flawlessly prepared, nano-hybrid had (003), (006), (011), (112) and (222) characteristic crystal planes attribute to NiAl-LDH/GO and ZIF-67 by X-ray diffraction (XRD), and the sheet-like structure and polyhedral structure were observed. The NiAl-LDH/GO@ZIF-67 nano-hybrid was rich in metal elements and provides a wealth of electrochemical active sites by EDS test. The study displayed that the maximum output voltage of NiAl-LDH/GO@ZIF-67-MFC was 516 mV and the stabilization time could last for about 8 d. The maximum output power was 501.26 mW/m², which was 1.31 times of NiAl-LDH/GO-MFC (381.92 mW/m²) and 2.76 times of ZIF-67-MFC (181.48 mW/m²). The GO with high conductivity was used as the substrate to ensure the stability of electrode cycle and the efficiency of power generation, the laminar structure of NiAl-LDH provided the specific surface area for the reaction, which facilitated the transport of electrons. The good structure of ZIF-67 increased the active sites of the composite. The excellent properties of the composites promoted the electrochemical stability and electricity production output of MFC. This study provided a method for the further application of MFC in the wastewater field.     

Research progress in the application of metal organic frameworks and its complex in microbial fuel cells: Present status,opportunities, future directions and prospects

Metal organic frameworks (MOFs) could greatly improve the power generation and degradation performance of microbial fuel cells (MFCs). MOFs and their compound derivatives played key role in cathode, anode and proton exchange membrane of MFCs, which greatly promoted the power generation of MFC and the degradation efficiency of various pollutants. However, MOFs were still possessed some defects, such as complex synthesis process, difficult regulation, instability, etc. Moreover, the application of MFC was limited in low power density, system internal resistance, microbial consumption, etc. Which further limited the degradation of pollutants by MFC. The existing problems and various improvement schemes of MOFs for MFCs were further summarized, which would provide references for promoting the application of MOFs materials in MFC system. It was expected to enhance the application of MOFs materials and promote the performance of MFC.     

基于MFC的产品结构树管理系统的实现

以Visual C++的MFC作为开发平台,通过ODBC实现应用程序对ACCESS数据库的访问,建立产品结构树,采用树状视图的方式表达产品的组成信息。实现对产品组成件信息的记录、入库、修改、更新及图纸浏览等功能。     

MFC-Based Structural Health Monitoring Using a Miniaturized Impedance Measuring Chip for Corrosion Detection

This article presents an experimental study using an active sensing device that consists of a miniaturized impedance-measuring chip (AD5933) and a self-sensing macrofiber composite (MFC) patch to detect corrosion in aluminum structures widely used for aerospace, civil, and mechanical systems. A simple beam structure made from a 6063 T5 aluminum alloy was selected for corrosion-detection testing. Four different corrosion cases with two different locations and two different degrees at each location were artificially inflicted on the beam using hydrochloric (HCI) acid. To identify the degrees and locations of the corrosion, the electromechanical impedance-based damage-detection technique using the proposed active sensing device was investigated. Root-mean-square deviation (RMSD) metric of the real part of the impedances obtained from the MFC patch was selected as a damage-sensitive feature. Experimental results have verified that the proposed approach can be an effective tool for detection and quantification of corrosion in aluminum structures.     

ODBC用于Pro/E二次开发的参数化零件设计

介绍了ODBC用于Pro/ENGINEER二次开发的参数化零件设计的总体思路和实现方法。结合开发实例 ,详细地讲述了在Visualc ++中应用MFC基础类库将ODBC与Pro/ENGINEER Wildfire二次开发语言Pro/TOOLKIT进行交互的快捷方式 ,并总结了一条基于Pro/ENGINEER个性化参数设计开发的有效途径     

Object ARX与MFC相结合进行AutoCAD二次开发

分析了ObjectARX应用程序的编写,并探讨了在ARX程序中应用MFC类库。从ObjectARX和MFC的应用特点出发,介绍了基于动态链接MFC库开发ARX应用程序的基本原理,论述了MFC与ObjectARX相结合进行Auto-CAD二次开发的具体方法,说明了MFC与ObjectARX相结合是深入开发AutoCAD的有效途径。     

基于MFC 软件界面设计的视觉优化

针对基于MFC的软件界面设计存在色彩单一、控件呆板等问题,采用加载皮肤、个性化自绘和嵌入Flash 3种方法进行视觉优化.介绍软件界面设计和微软基础类库,详细分析软件界面的3种设计视觉优化方法的实现形式,对比了各自的优缺点.实践证明:视觉优化能够增强软件界面的美观性、友好性、多样性;3种方法的灵活运用,使得软件界面设计的视觉优化方法条理化、系统化,是有效可行的.     

基于Prodave技术的西门子PLC监控调试软件开发

介绍西门子S7-200/300PLC与上位机通信软件的设计。使用PRODAVE软件包的动态链接库建立Profibus-DP及以太网通信,实现上位机对PLC数据的读写操作。在MFC环境下完成界面的开发。     

基于压电纤维复合材料的洋流能发电装置发电性能分析

设计了一种基于压电纤维复合材料(MFC)的洋流能发电装置,并分析了其发电性能。以悬臂梁结构为分析对象,对影响发电性能的因素进行了分析,研究了基底材料的类型和厚度、频率、位移激励幅值、单晶和双晶结构对发电性能的影响规律。基于上述分析结论,设计了一种洋流能发电装置。分析了该发电装置的发电性能。分析结果表明,该发电装置在转子转速为500 r/min的工作条件下,最大输出功率为9.31 W,能满足功率要求。