Preparation of superhydrophobic silver nano coatings with feather-like structures by electroless galvanic deposition

Superhydrophobic silver nanocoatings with feather-like morphology are fabricated on copper substrates by electroless galvanic deposition. The coating exhibit superhydrophobicity with a contact angle of 156.4° and glide angle of 4° without any further surface modification. Scanning electron microscope (SEM), X-ray diffraction (XRD) and contact angle measurements are used to investigate the morphology, crystal structure and superhydrophobicity, respectively, of the coatings. The coatings exhibit high thermal stability; their water contact angle did not change when the coatings were heated to 200°C for 2 h. The mechanism of superhydrophobicity of the silver coating is discussed based on the work of Amirfazli, Wenzel and Cassie.     

高校图书馆借阅超期的原因与对策

当前高校图书馆借阅超期较为普遍,通过问卷调查得知读者的借阅超期大多无恶意行为。针对这种情况以及高校图书馆自身的条件和特点,实施"告知服务"可减少借阅超期行为,以此提高图书的利用率。     

师生谈心高效之浅见

在平时的教学工作中,师生交流与沟通只要能重视方式方法,就能增进师生间相互理解、支持与配合,建立浓厚的师生感情,产生凝聚力、向心力,有利于良好学风的形成,促进学生身心健康发展.那么,教师应如何与学生谈心才能更高效呢.笔者对此进行了论述.     

Plasmonic biosensors and nanoprobes based on gold nanoshells

Gold nanoshells (GNSs), consisting of a dielectric core coated with gold, have gained extensive attention as they show readily tunable optical properties and good biocompatibility. As highly sensitive and label-free optical biosensors with wide applications, GNSs have been investigated in many fields including drug delivery, immunoassay, cancer treatment, biological sensing and imaging. Taking advantage of the adjustability of the local surface plasmon resonance (LSPR) and the sensitivity of the surfaceenhanced Raman scattering (SERS) signal of GNSs, we have developed diverse applications including plasmonic biosensors and nanoprobes based on GNSs. In this review we introduce plasmonic and electromagnetic properties and fabrication methods of GNSs. We describe research progress in recent years, and highlight several applications of GNSs developed by our group. Finally we provide a brief assessment of future development of GNSs as plasmonic materials that can be integrated with complementary analytical techniques.     

Anonymous multipath routing protocol based on secret sharing in mobile ad hoc networks

Because the intrinsic characteristics of mobile ad hoc networks(MANETs) cause several vulnerabilities,anonymous routing protocols attract much more attention in secure mobile ad hoc networks for the purposes of security and privacy concerns.Until recently,lots of anonymous routing protocols have been proposed.However,most of them are single path or use one path at a time,and the multipath schemes can not thwart both the passive attacks and active attacks simultaneously.Thus an anonymous multipath routing protocol based on secret sharing is proposed.The protocol provides identity anonymity,location anonymity,data and traffic anonymity by employing cryptograph technology and secret sharing in MANET communication process.Meanwhile,a hash function is introduced to detect active attacks in the data transmission process.The protocol can effectively thwart various passive attacks and reduce the successful probability of active attacks(such as interception and physical destroy attacks).Simulation results show that the proposed scheme provides a reasonably good level of network security and performance.     

论水泥搅拌桩在高速公路软基处理中的施工工艺

介绍了采用水泥搅拌桩处理祁临高速公路临汾北环段第四合同段软质地基的施工方法、施工要求及质量控制。     

单-6-叠氮-β-环糊精与苯乙炔的点击化反应

利用CuI/NBS这种新型催化体系来促进单-6-叠氮-β-环糊精与苯乙炔之间的偶联反应,通过这个多组分反应可以高效地以炔和叠氮为原料一锅法制备5-碘代-1,4-取代-1,2,3-三氮唑类化合物.     

山西省国际商务人才引进和培养研究

山西作为能源大省,一直是中国对外经济活动的活跃力量.但是,近年来,随着对外合作的加深,也体现出一些制约因素,最主要体现在缺乏精通国际商务的高素质人才.从制约人才引进和培养的角度出发,客观分析造成山西国际商务人才现状的原因,并提出相应的对策.     

培养训练运动员在篮球场上的意识

"篮球意识"是指在复杂困难的环境中能随即应变地争取主动并正取的实施自己的行动和策略的一种即兴发挥能力.是在比赛中各种技术动力、战术灵活运用和发挥生理机能和技战术能力的自觉的、能动的、富有创造性的、具有特殊作用的心理活动.     

A multiple-labelling method for cells using Au nanoparticles with different shapes

An important and difficult issue is simultaneously identifying the detailed locations of various molecules on the cell surface, as this identification requires a synergistic effect between more than one molecule in a living cell. Au nanoparticles (NPs) with different shapes can be readily recognised under low vacuum scanning electron microscopy (lvSEM). Anisotropic Au nanorods (NRs) possess unique surface plasmon resonance (SPR) properties, which can be further utilised for two photon luminescence (TPL) and other optical imaging techniques. In this paper, Au NRs and Au nanooctahedra (Au NOs) are introduced as biomarkers for ICAM-1 and Integrin β1. Combined with the advantages of lvSEM, this multiple-labelling method is a new method for studying the interactions between specific, functional molecules.