Study of Cellular Experiment of Electric Pulse Imposed on Cancer Cell

The objective of the study is the cytocidal and inhibitory effect of energy-controllable pulse on ovarian cancer cell line SKOV3.Ovarian cancer cell suspension were treated by electric pulse with different parameters,.The inhibitory rate(IR) was assayed by modified colorimetric MTT methods,the growth curves of two test groups and one control group were also measured.and the ultrasturctureal changes were observed under electron microscopy(EM) and scan electron microscopy (SEM),It was found that the treated SKOV3 cell proliferated more slowly.IR was increased with the enhancement of pulse paramters,The ultrastructural study showed that morphological changes occured obviously.Swollen mitochondria,fracutured ridges,cytoplasmic vacuoles and membrane holes appeard in most of the processed cells,and a part of bilayer membrane was ruptured.It is indicated that irreversible electric breakdown occurred in some of the treated cells,and the electric pulse could kill cancer cell and inhibit its recovery and growth.     

网络环境下区域农业信息集成设计及其服务推进

从当前农业信息化现状出发,结合农业的区域性差异,提出了网络环境下面向区域农业信息服务的信息资源集成体系结构.随后讨论了网络农业信息资源集成设计要点,重点对其核心--网络信息自动集成进行研究,在此基础上实现了区域性农业信息集成服务平台的建设.最后,以平台为例分析了区域农业信息集成服务的推进.     

基于免疫算法的二次曲面几何参数提取

在机械产品的逆向工程中,针对测量数据提取常用二次曲面几何参数非常重要,它有助于理解设计意图,提高重建模型的精度和效率。提出了基于实数编码免疫算法针对离散数据点进行二次曲面提取的方法。数值实验结果证明了此算法的有效性、鲁棒性和精确性。     

Dielectrophoretic force distribution of growing microwires

1. Introduction The assembly of colloidal particles holds promise for the miniaturization of photonic and electrical circuits and their stacking in the third dimension [1]. Important recent developments in the field of creating miniaturized electrically functional structures include the synthesis of electronic elements by templated growth in membrane channels [2] and their assembly and characterization [3], formation of electrical connections and electronic elements by electro-deposition [4], …     

高校图书馆数字资源整合研究

对当前高校图书馆数字资源整合的必要性、现状及意义进行了阐述,分析了数字资源整合的目标及原则,对高校图书馆数字资源整合的方法进行了详尽的研究,并提出了一些建议.     

网络信息安全技术

文章详细介绍了网络安全及相关技术,分析了其中的一类应用安全问题—PC机的安全问题,给出了解决这类问题的安全技术—PC防火墙技术。     

电大教学资源整合与利用的实践

在广播电视大学"人才培养模式改革和开放教育试点"中,教学资源的整合利用是十分重要的研究课题.永川广播电视大学通过整合利用教学资源,构建了具有自身特色的教学资源系统.     

对铁的氧化物的两点教学思考

1 关于铁的氧化物的生成条件 高中化学(必修加选修)第二册教师教学用书(2008年人教版)第84页倒数第二段,有如下两行叙述: 如果在空气中把铁灼烧至500℃就形成Fe3O4;温度再高,可形成Fe2O3;在更高的温度下加热Fe2O3(约在1400℃以上)时,可失去氧,又得到Fe3O4.