Y型密封圈橡胶模设计

介绍了Y型橡胶模具的设计 ,重点对模具结构和模腔尺寸进行了分析和阐述 ,经生产验证 ,此模具结构合理 ,定位可靠 ,操作方便 ,从而为同类产品的设计提供了参考。     

A One‐Kilobit PQR‐CMOS Smart Pixel Array

The photonic quantum ring (PQR) laser is a three dimensional whispering gallery (WG) mode laser and has anomalous quantum wire properties, such as microampere to nanoampere range threshold currents and √T‐dependent thermal red shifts. We observed uniform bottom emissions from a 1‐kb smart pixel chip of a 32×32 InGaAs PQR laser array flip‐chip bonded to a 0.35 µm CMOS‐based PQR laser driver. The PQR‐CMOS smart pixel array, now operating at 30 MHz, will be improved to the GHz frequency range through device and circuit optimization.     

电液同步控制筒阀在小浪底水电厂的应用

小浪底水电厂位于多泥沙的黄河干流上，水轮机活动导叶会因磨损过大而严重漏水，在水轮机的设计上必须考虑这个因素;同时，为适应混水发电，小浪底水电厂机组采用了筒阀。文中介绍了筒阀的结构特点、功能及控制原理等，并对其在现场的实际应用情况进行了分析。     

纯铜双层辉光离子渗钛组织形成机理及性能分析

采用双层辉光离子渗金属技术对纯铜进行了渗钛处理。用配有能谱仪(EDS)的扫描电子显微镜(SEM)、X射线衍射仪和透射电子显微镜对合金层的显微组织形貌、钛含量分布、相组成及相结构类型进行了观察与测定，对合金层的形成机理进行了探讨，并对其性能进行了对比测定。结果表明：渗钛层由合金层和扩散层组成，合金层主要由TiCu (Cu)固溶体 TiCu4构成，TiCu4为Dla型有序相，TiCu为B2型有序相，扩散层为(Cu)固溶体。渗钛处理后纯铜的表面得到显著强化。     

An algebraic method for processing colored images

An 8-valued commutative ring is developed to process colored images. Algebraic operators are defined to perform a number of operations such as the extraction of the primary colors and contours of different colors.     

有机电沉积涂料的新动向

阴极电沉积涂料是 2 0世纪 70年代以来发展起来的一种新的涂装方法 ,具有挥发性有机物 (VOCs)和有害空气污染物(HAPs)含量低、防蚀能力强、漆膜质量好、涂料利用率高、适合涂装结构复杂的构件和设备等特点。介绍了近年来阴极电沉积涂料研发的新动向。它们主要集中在有机双层电涂和高分子 聚电解质 /低聚物电解质复合物多层电涂体系 ,这些新的电涂体系在涂料的稳定性以及涂层的物理化学性质和力学性能方面具有明显的改进。     

Low-resistance polysilicon process in contact application for high density devices

For the lowest resistance, it is required to have the epitaxial silicon contact between the silicon plug and the substrate and good step coverage at the high aspect-ratio contact holes, simultaneously. In this work, a double polysilicon (DPS) deposition technique was proposed for the requirements. The first, thin silicon layer is deposited in a single-wafer process chamber with an in-situ H₂-RTP (rapid thermal process) treatment for the epitaxial contact, and the second silicon layer is formed in a batch-type furnace for good step coverage. From chain resistance, Kelvin R_c, and current-voltage (I–V) measurement, the DPS process meets both low resistance and good uniformity, so that it suggests a breakthrough in the small-sized, semiconductor device application.     

无捻毛巾产品毛羽问题的分析与实践

对无捻毛巾产品毛羽问题进行了分析,对成因进行了初步探索.通过试验,制定了较为有效的改进措施和工艺.无捻毛巾制品的毛羽问题得到改善,并控制在一个较为合理的范围内.     

EXPERIMENTAL RESEARCH ON RADIATION FROM DOUBLE CYLINDRICAL STRUCTURES

1. INTRODUCTION Induced by unbalanced mechanical forces and moments, underwater structures vibrate and radiate The main form of underwater structures, such a submarine, is reinforced double cylindrical structure immersed in water, with fluid media filled between th double cylindrical shells. In essence, this is a coupling problem between fluid and structure. Multipl methods have been used to estimate radiation leve from underwater structures[1-9]. Musha[10] and Chertock[11] estimate the …