Security Considerations Based on PKI/CA in Manufacturing Grid

In the manufacturing grid environment, the span of the consideration of security issues is more extensive, and the solutions for them are more complex, therefore these problems in manufacturing grid can＇t longer be addressed by existing security technologies. In order to solve this problem, the paper first puts forward the security architecture of manufacturing grid on the basis of the proposal of the security strategies for manufacturing grid; then the paper introduces key technologies based on public key infrastructure-certificate authority （PKI/CA） to ensure the security of manufacturing grid, such as single sign-on, security proxy, independent authentication and so on. Schemes discussed in the paper have some values to settle security problems in the manufacturing grid environment.     

基于ARMS 3C44BOX处理器的PS／2键盘接口的设计与实现

基于三星公司的S3C44BOX处理器的嵌入式开发平台，提出了一种用S3C44BOX的通用I／O口和中断源实现与PS／2键盘的接口设计方案，详细阐述了其硬件接口设计和软件设计的步骤，并用C语言编写了软件设计程序，以便移植到其它系统中。     

HFC－125表面张力的试验研究

为了适应国际上《蒙特利尔议定书》即将禁用ＣＦＣ与ＨＣＦＣ类物质的紧迫要求，寻求它们的替代物成了当务之急。ＨＦＣ－１２５是迄今为止所有用以替代ＨＣＦＣ－２２的混合工质中必不可少的一种组份，而其物性研究还十分欠缺，特别是它的表面张力研究尤为少见。因此本文发表了在２３３．１５～３３３．１５Ｋ温度范围内，通过精密测量获得的２１组ＨＦＣ－１２５表面张力实验数据。实验所用的样品纯度为９９．９８％。这些数据是利用毛细管表面张力实验装置，分别按两种方法─—绝对法和相对法测量计算得到的。不同方法的结果吻合得很好，相对偏差在０．２％以内，绝对偏差小于０．０１ｍＮ／ｍ，所测得的数据具有很高的可信性。最后还通过对实验数据拟合，提出了该温度范围内ＨＦＣ－１２５表面张力与温度间的关联式。     

~(125)I(~(131)I)标记血卟啉的研制

为了研究光敏剂血卟啉在组织内的分布状况及运动变化规律等,以提高疗效,按文献制备了放射性标记的血卟啉作为“示踪剂”。1 碘化标记1)氯胺T法:反应所用的氯胺T(ChT),Na_2S_2O_5,KI等均用0.2mol/L pH7.5PB溶解,临用前配制.小试管中放入血卟啉0.5mL(5mg/mL,针剂,中国医学科学院肿瘤研究所提供)、Na~(125)I(Na~(131)I)25μL(约2mCi)和ChT0.5mL(5mg/mL),搅拌下室温反     

国内CA建设的探讨

CA作为电子商务安全策略的重要组成部分,承担着验证电子商务网络交易中传递的信息以及各方身份的重任.我国的CA发展已具备一定规模,在实际应用中取得了一定成效,但是还存在着不少问题.文章通过对国内主要CA的介绍与分析,探讨了CA发展中的一些问题,并提出了解决的思路.     

分析化学理论与实验教学一体化的探索

分析化学是一门实践性很强的学科。本文针对当前高等学校教育中的分析化学理论与实验教学的不能统一、相互隔离的现状，通过分析化学理论与实验教学以及CAI技术应用和互联网上教学资源的使用，探讨了分析化学理论与实验教学一体化的途径，以更好的提高分析化学的教学质量，培养出高素质的应用型的人才。     

血清CA125检测在卵巢癌复发中的临床意义

总结和回顾了血清CA125检测在卵巢癌复发中临床应用以来的研究概况和主要成果，并分析了CA125检测在预测卵巢癌复发中存在的问题．     

气压、水温对FD─105K射气仪、FD─125测氡仪测值影响初探

通过ＦＤ─０５Ｋ、ＦＤ─１２５两种测氡仪多年的工作实践，发现这两种这两种日测值在年内变化方向相反．本文根据其仪器的工作原理，探讨了产生测值差别原因及气象因素的影响．     

Microstructure heterogeneity and creep damage of DZ125 nickel-based superalloy

The creep behavior of the DZ125 superalloy at high temperatures has been investigated based on the creep properties measurement and microstructure observations. The experimental results show that, after full heat treatment, the fine and coarser cuboidal γ0precipitates distributed in the dendrite arm and inter-dendrite regions, respectively, the boundaries with various configurations located in the inter-dendrite regions. In the primary creep stage, the cuboidal γ0phase in the alloy transformed into the rafted structure along the direction vertical to the stress axis.The dislocations slipping and climbing over the rafted γ0phase are attributed the deformation mechanism of the alloy during steady-state creep.The(1/2)?1 1 0? dislocations slipping in the γ matrix and ?1 1 0? super-dislocations shearing into the γ0phase are the deformation mechanisms of the alloy in the latter stage of creep. And then the alternate slipping of dislocations results in the initiation and propagation of the micro-cracks along the boundaries until the occurrence of the creep fracture. Since the grain boundaries with various angles relative to the stress axis distribute in the different regions, the initiation and propagation of micro-cracks along the boundaries display the various features.& 2014 Chinese Materials Research Society. Production and hosting by Elsevier B.V. All rights reserved.     

一种基于自主寻址的类Modbus协议的设计

针对标准Modbus协议发送信息前需要知道对方地址,提出一种改进方案,设计出能自主寻址的类Modbus协议。该方案在主节点中设置子地址表,并且定时更新表信息,使主节点能够及时知晓新子节点的加入和旧子节点的断开等信息。为了降低寻址时系统的负载量和数据的冲突概率,采用时间槽的机制发送信息,并根据数据量确定时间槽。采用带ACK的CSMA/CA机制报告子节点的存在,并对相关的请求/应答帧进行了设计。