Real time monitoring of nucleic acids ligation based on molecular beacon

The replication, ligation and repair of nucleic acids are essential life processes that based the survival, pro-creation and evolution of creatures. These interactions involving proteins (enzymes) and nucleic acids have fas-cinated great interest of scientists[1]. The nucleic acids ligation has been revealed that it is catalyzed by ligase and co-enzyme (ATP or NAD)[2—4]. Along with in-depth re-search, the nucleic acids ligation becomes a significant and common tool employed in bioengineerin…     

2D self-assembling of 4, 5-didodecylthiolphthalonitrile on graphite surface

An important precursor 4,5-didodecylthiolphthalonitrile (DCP) for synthesis of phthalocyanines (Pcs) and subphthalocyanines (SubPcs) was synthesized and the assembling structure of this molecule on the basal plane of highly oriented pyrolytic graphite (HOPG) surface was characterized using the scanning tunneling microscopy (STM) in ambient conditions. In high-resolution images of the molecules, we found that the arrangement of the cyano groups forms a “head-to-head” configuration to keep the stability of the entire system. The mismatch of the DCP molecules with the substrate lattice has also been observed in the experiment.     

主成分估计的方差最优性

定义了一类新的降维估计类,证明了主成分估计在这类降维估计中具有几种方差最小性。     

潍坊城市竞争力研究报告——基于《中国城市竞争力报告》的解读

城市经济在现代经济社会中发挥着主导性作用,对社会经济资源的集聚功能日益增强.城市之间的竞争日益激烈,城市竞争力影响因素及衡量指标体系的研究也日益重要.通过对潍坊城市竞争力影响因素和衡量指标体系的分析,探寻制约潍坊城市竞争力提升的原因,并据此提出增强潍坊城市竞争力的对策建议.     

科技英语翻译的方法和技巧

随着我国对外科技交流的发展,科技英语作为交流的工具越来越受到人们的重视,文章论述了科技英语翻译的主要方法和技巧.     

浅谈心理教育与素质教育的关系

阐述了心理教育是素质教育的基础与前提；心理教育能推进素质教育的高效实施；心理教育与素质教育相辅相成，相互促进，使教育水平再上一个新台阶。     

论新闻真实

新闻真实既有重要意义，又要面临一些尴尬。新闻真实就是要做到对社会生活中新近发生的事实尽量准确、全面、辩证地如实描绘。新闻真实受到制约，尤其是来自各方面的控制形成的新闻选择。于是我们相应提出一些对策。     

电子自旋共振年代计时(III)——关于鹿牙和牛牙化石的研究

采用电子自旋共振年代计时方法测定了贵州桐梓马鞍山的鹿牙化石及河北迁安爪村牛牙化石的年龄,它们分别为(1.5±0.2)×10~4a和(3.7±0.5)×10~4a。在研究作为ESR信号来源的顺磁缺陷中心的性质时,还应用了正电子湮没技术。     

半线性抽象控制系统的逼近能控性

讨论一类半线性抽象控制系统 y+Ay=F(y)+Bu的逼近能控性,给出了系统逼近能控的充分条件,改进了一些已知结果。     

环R的近理想

本文通过对环R的子环所满足的条件进行加强,把环R的理想概念进行了推广,从而引出近理想的概念,并得到一些相应的结果,最后提出一个更广的新问题。