HDI工艺中取代涂树脂铜箔适合激光钻孔的半固化片

应用于HDI的激光钻孔半固化片的方法和其它常规材料相比具有的优缺点。     

利用静电学和测量数据对碳纳米管膜场致发射规律的定量分析

碳纳米管膜的场致发射电流密度仅由它表面的宏观电场决定，无论其表面形状是平的还是半球状的。对于理想的平行板电极系统，其表面电场强度均匀（UId），发射电流密度、总电流与发射面积成正比：对于半球一平面电极系统半球形的阴极存在一个宏观场增强因子ks，一个与两极距离和球半径之比（d/r）相关的函数，其表面的平均场强为ks U/d。对于d/r=0，ks=1，d≥r的情况，ks接近于常数。对于10〈d／r〈100的情况，存在一个经验的表达式：ks=1＋0．15d/s=0．005（d／r）^2。在引入ks后，不同作者给出的平面电极系统和半球一平面电极系统碳纳米管膜的场致发射电流I与宏观表面电场强度E的关系都可以近似用-经验公式描述：I=a（E-Eo）^b，a，b为常数。该经验公式可为稳定生产的CNT膜片应用产品设计提供方便。     

PLC控制电梯仿真模块设计

PLC这门课传统的实验方法是采用“平面型”的模块模仿生产流程,实验效果不理想。而采取教学仪器公司生产的仿真模块,具有“立体感”强的特点,实验效果好,但价格贵。针对这一情况,作者开发了几种价格低廉的仿真模块用于教学,取得了很好的效果,值得推广。本文介绍其中的4层电梯仿真模块的设计与实现。     

使用Monte Carlo方法对光子-物质的相互作用进行模拟

在医学影像获得方法中，核医学与传统的放射线探测，扫描仪探测，核磁共振相比，是唯一能获得器官功能性信息的方法，但它获得的图像质量不如其他方法。开发了一种图像探测仪并使用Monte Carlo方法对其各组成部分进行模拟从而可以通过调整参数来获得高分辨的图像。     

基于PCI总线的扫描电镜图像采集系统

图像采集系统是扫描电镜的一个重要组成部分，用于控制扫描电镜的扫描电源，视频图像采集，数字化与显示，电镜主控计算机与底层微机板的通讯和电镜照相，本图像采集系统基于PCI总线接口设计，硬件主要设计采用FPGA技术，实现了数字电路的模块化设计，集成度和灵活性高，目前，电镜图像卡已达到所要求的设计水平。     

Fatigue crack growth in SiC particulates reinforced Al matrix graded composite

The SiC/Al graded composite was fabricated by powder metallurgy processing and its fatigue crack growth behavior was studied. The volume percentage of SiC particulates was distributed from 5 to 30% layer by layer on the cross section. Since the aluminium was dissolved together, there was no evident interface between the two layers with different volume fraction of SiC particulates. Fatigue crack growth was in direction of from 5 to 30% SiC layers under sinusoidal wave-form. The retardation of fatigue crack growth was found when crack propagated from low volume fraction of SiC to high volume fraction of SiC. The crack deflection and branching between two layers were observed, which decreased crack growth rates. In view of crack tip driving force, the plasticity mismatch between the layers shielded crack tip driving force, i.e. decreased the effective J-integral at the tip of the crack as the plastic zone of the crack tip spread from the weaker material into the stronger material.     

阜阳地区石炭-二叠系煤系烃源岩特征

阜阳地区石炭-二叠系煤系地层发育，但由于勘探程度较低，对该区煤系地层烃源岩的生烃潜力认识不清，严重制约了该区的油气勘探。在已有资料的基础上，通过有机地球化学和有机岩石学方法并结合模拟实验，探讨了该区煤系烃源岩的生烃潜力。研究结果表明阜阳地区石炭-二叠系煤系烃源岩有机质丰度达到中等-好烃源岩标准，有机质类型以腐殖型为主，盆地模拟结果显示阜阳地区石炭-二叠系煤系地层油资源量为（30.47~152.33）×10⁶t，气资源量为（266.7～1333.7）×10⁸m³，展示阜阳地区石炭-二叠系煤系地层具有较好的生油气潜力。     

时频域自动识别与压制高频噪声

本文在分析张宇等及钱忠平等提出的高频噪声判别准则基础上,利用夏洪瑞等根据在窄档等频距小波分频之后识别、压制高频噪声的思路,提出在时频域将代表地震道主要能量的几个频带的平均振幅绝对值作为正常子波的平均振幅绝对值,以此来识别和压制高频噪声的异常振幅。实际处理结果表明,此法不仅可以压制高频谐振及高频突发噪声,而且可以保护弱地震反射信号不受损害。     

世界原油质量趋势及我国面临的挑战

评述了世界原油质量趋势、我国重质油现状以及我国加工含硫原油的现状和前景。     

Study on the inhibiting behavior of AMT on bronze in 5% citric acid solution

The corrosion behavior of bronze in the presence of 2-amino-5-mercapto-1,3,4-thiadiazole (AMT) has been investigated in 5% citric acid by electrochemical measurements such as potentiodynamic polarization method and electrochemical impedance spectroscopy (EIS). It has been revealed that AMT is a good inhibitor for bronze. Both cathodic process and anodic process on bronze treated with AMT were different from that on the bronze without AMT treatment. Fourier transform infrared (FTIR) analysis was carried out to characterize the protective film, which revealed that the composition of the protective film was polymeric Cu(I)-inhibitor complex. AMT acted as bidentate ligand through the aminic nitrogen atom and the closed ring nitrogen in the complex.