三余度信号表决系统在SCADE下的设计与实现

主要介绍了基于嵌入式软件开发的新方法——实时嵌入式软件开发的高效解决方案SCADE,进行图形化软件开发、代码自动生成的关键技术。总结了图形化软件开发的一般流程,并且以SCADE在三余度信号表决系统中的应用实现图形化设计与代码自动生成,并将生成的代码与手工开发的代码进行比较之后嵌入到VxWorks中完成功能测试。     

高校图书馆功能拓展的理论研究与实践探索

以拓展高校图书馆功能的缘由为切入点,在比较几种高校图书馆功能拓展理论分析方法的基础上,总结了高校图书馆功能拓展的一些实践探索,指出当前研究中存在的问题,并对未来的研究进行了展望。     

高职".NET"人才培养教学设计

NET平台下的程序开发作为高职院校计算机软件技术专业的一个重要的就业方向,其教学设计已经成为学生学好相关内容的关键。.NET人才培养方向教学设计以就业为导向,融“教、学、做”为一体,强化了学生能力的培养。     

浅析海相沉积地层数据库的建立流程--以全球白垩纪大洋红层(CORB)综合数据库的建立为例

随着各种沉积地层资料大量积累,需要建立合适的地层综合数据库,以减轻繁重的手工操作及由于其人为性带来的误差.数据库中除了生物、年代地层对比信息资料外,沉积、地球化学信息也应纳入.以全球白垩纪大洋红层为例,介绍了运用GraphCor软件进行地层对比数据库建立的程序:建立剖面文件→建立化石分类单元库文件→建立目录文件→运行GraphCor软件,获得数据库和图示对比结果 沉积、地球化学信息 地层柱状图→综合数据库;讨论了有关对比标准参考剖面的选取、分类单元的始现和末现层位、数据库的更新及衔接等问题.     

Reduce Plasticizer Migration by Modification of PVC during Reactive Processing

Plasticizers in plasticized polyvinyl chloride (PVC) are generally physically added into PVC by compounding so that they can be rapidly leached from PVC articles during service. This results in their migration into the human environment with potentially serious consequences and lower effectiveness of the additives in PVC. Potentially the chemical modification of PVC during processing via reactive processing procedure is one of the most attractive solutions to these problems.In this paper, we will report our work in exploring an environmentally friendly and cost-effective reactive processing approach for chemically binding plasticizer into PVC chains.Our research results indicate that it is possible to reduce the plasticizer migration from a plasticized PVC by chemically binding of a certain plasticizer into PVC chains via reactive processing. Thus, high levels of binding of DBM, a maleate plasticizer, to PVC may be reached in less than 10 min under prevailing reactive processing conditions. The extent of binding of DBM as a function of the loading shows two peaks: one at a relatively low loading (less than 0.12 mol*kg-1 PVC) tends to 100%, the other in the high loading region (more than 1.5 mol*kg-1 PVC) approaches around 50%. The DBM modified PVC polymer exhibits behaviours as a plasticized PVC but its bound plasticising groups would not be leached by solvent extraction.     

聚氨酯-丙烯酸酯-苯乙烯复合乳液的合成与性能

以甲苯二异氰酸酯(TDI)、聚醚二元醇(N210)、丙烯酸羟丙酯(HPA)、甲基丙烯酸甲酯(MMA)、苯乙烯(ST)为主要原料,采用原位乳液聚合法合成了聚氨酯-丙烯酸酯-苯乙烯(WPUAS)复合乳液;通过Fourier变换红外光谱对产物进行了表征;研究了NCO与OH总摩尔比、WPU与MMA与ST质量比、HPA用量对乳液粒径、储存稳定性及固化膜硬度、吸水率等性能的影响.     

葡聚糖微球栓塞子宫动脉治疗子宫肌瘤的疗效

为探讨葡聚糖微球栓塞子宫动脉治疗子宫肌瘤的临床疗效,对30例子宫肌瘤患者行子宫动脉栓塞术治疗,随访观察术后症状缓解、子宫和肌瘤缩小的程度。结果显示30例患者行双侧子宫动脉栓塞,在有症状的27例中,24例(88.9%)症状有不同程度的缓解,其中月经症状改善最为显著。子宫及肌瘤体积行UAE后1个月、3个月、6个月彩超复查子宫及肌瘤的体积平均缩小率分别为17.42%、27.95%、42.86%和24.2%、38.0%、56.15%。这表明,采用葡聚糖微球栓塞子宫动脉治疗子宫肌瘤的近期疗效明显。