Computation with mobility becomes a novel distributed computation paradigm with the development of network technology. The calculus of Mobile Ambient is a widely studied formal mechanism for describing both mobile computing and mobile computation. This paper deals with one of its variants, the Safe Ambient calculus (SA) . In details, this paper modify the syntactic definition of SA, as a result, the security checking action is unified to be executed when an ambient is to be entered, which makes it fit into the intuition more accurately. At the same time, an improved contextual bisimulation is given by the means of Honda-Yoshida′s technique, which leads to a finer algebraic property. An example of firewall is provided to show the soundness of the improved calculus and its behavior equivalence.
Resilient Packet Ring, defined by the IEEE 802.17 working group, is a new Media Access Control protocol for data packet transmission on ring topology. This paper presents a new implementation of RPR MAC datapath, each station supporting data access, receive and filter, transmit, which are designed to support local and bridged traffic.
Post-translational modifications of mitosis-related proteins play significant roles in regulating the mitotic processes and the cell functions. The common types of modifications include phosphorylation, glycosylation, SUMOylation, acetylation and methylation. These post-translational modifications can help to maintain chromosomal structures, promote chromosomal separation and the regeneration of nuclear membrane during the anaphase. This article has reviewed the newly discovered types of modifications in mitosis-related proteins and their functions, with a view to provided a new direction for basic research in cancers.
PDF HTML阅读 XML下载 导出引用 引用提醒 DNA条形码在渔业生物多样性保护中的应用 DOI: 作者: 作者单位: 1. 中国水产科学研究院黄海水产研究所, 山东 青岛 266071;2. 青岛海洋科学与技术国家实验室, 海洋渔业科学与食物产出过程功能实验室, 山东 青岛 266200;3. 中国水产科学研究院, 北京 100141 作者简介: 柳淑芳,研究员,从事渔业生物学研究.E-mail:liusf@ysfri.ac.cn 通讯作者: 中图分类号: S917 基金项目: 科技部科技基础性工作专项（2013FY110700）；中央级公益性科研院所基本科研业务费专项（2014A11）；山东省泰山学者建设工程专项. DNA barcoding: A potential tool for fishery biodiversity conservation Author: Affiliation: 1. Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;2. Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China;3. Chinese Academy of Fishery Sciences, Qingdao 100141, China Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:生物多样性与人类存亡休戚相关，保护生物多样性是实现人类社会可持续发展的基础。本文立足我国渔业生物多样性现状，针对我国渔业生物过度开发和保护不足等难题，提出了通过开展渔业生物DNA条形码研究来推动我国渔业生物多样性学科发展的思路，详细阐述了DNA条形码在渔业生物资源可持续开发、物种分类鉴定、生物多样性监测、外来物种评价、水产品市场监管、渔业信息化等多个领域的应用现状，进一步展望了DNA条形码可以成为渔业生物区系研究、水域生态研究、电子分类技术以及宏DNA条形码新技术等多个方面的研究热点，呼吁扎实推进我国渔业生物DNA条形码数据库和信息化平台的建设和共享。 Abstract:The Earth's biodiversity are closely altered by a variety of human activities at all scale from local to global. These changes have a strong potential effect to biological communities, ecosystem properties, social affairs and economic development they provide. China fishery is characterized by high biodiversity which cover 10 percent of the total earth species because its role geographical position that occupies the eastern part of the Eurasian continent adjacent to the western Pacific Ocean. In recent years, it is a very realistic and important scientific problem to protect and rationally utilize the biodiversity of fisheries globally. However, insufficient protection and hard utilization of fishery isn't a single case in China. To promote the development of fishery biological diversity in China, this paper puts forward the idea of DNA bar code methods for performing in fishery biology activities. It reviewed how DNA barcode expounds the sustainable development in the fishery biological resources, species identification and classification, fishery biodiversity monitoring, foreign species evaluation, market and supervision, fishery information and so on. Besides that, it further discussed the recent prospects for the DNA barcode in the biologic study of fishery organisms, water ecological research, electronic classification technology and the new technology of meta DNA barcoding. This research had appealed the continuous researches on construction of a fishery DNA barcode database and information platform of China which need to be constructed and shared nationally and globally. 参考文献 相似文献 引证文献
AbstractSurface roughness of acrylonitrile–butadiene–styrene (ABS) resin prior to metallization is treated generally with sulphuric/chromic acid system. However, the presence of chrominum (VI) ion imposes serious environmental problems. In this work, TiO2 photocatalytic treatment was used to enhance the adhesion strength between the ABS surface and the electroless copper film. Effects of the TiO2 content, irradiation time and UV power upon the surface topography, surface characterization and the adhesion strength were investigated. The results indicated that the surface hydrophilicity of ABS resin and the adhesion strength between the electroless copper film and ABS surface increased with an increase in the UV power and a prolongation in irradiation time, and did not increase linearly with an increase of TiO2 content. Though the surface topography of ABS changed little, the adhesion strength reached 1.25 kN/m, which was higher than that in the optimal H2SO4–MnO2 colloid. The surface chemistry results indicated that –COOH and –OH groups formed with the photocatalytic treatment and the absorption strengths increased with the UV power. XPS analysis results further demonstrated that the contents of C=O and –COOH reached 6.4 and 4.9% with the photocatalytic treatment, which was much higher than that of the H2SO4–MnO2 colloid (3.9 and 3.1%). The high contents of C=O and –COOH groups enhanced the surface hydrophilicity of the ABS resin and improved the adhesion strength between the electroless copper film and ABS resin. The results indicated that the photocatalytic treatment was an environment-friendly and effective method to replace the commercial wet chemical process for ABS surface modification.Keywords: photocatalytic treatmentelectroless plating copperadhesion strengthABS resin FundingThe authors would like to thank the Research Fund for the National Natural Science Foundation of China [Grant No. 21273144]; Doctoral Program of Higher Education of China [Grant No. 20110202110004] and Changjiang Scholars and Innovative Research Team in University of China [IRT1070] for supporting this research.
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