Study on electrodeposition process, characterization and mechanism of functional trivalent chromium in sulfate bath

铬镀层因具有较高的硬度、良好的耐磨性和耐蚀性，以及白色泛蓝装饰性外观而被广泛地应用于汽车、电子、日常五金和航空航天等领域。传统的六价铬电镀因其剧毒性，对环境和人类健康均产生威胁，已日益不能满足绿色发展的需求。三价铬电镀工艺具有相较于六价铬的低毒性，不受电流中断影响，废水处理简单且不腐蚀设备等优势，是最佳的代六价铬电镀工艺之一。目前，三价铬常用于装饰性镀铬，而功能性厚铬镀层的电沉积工艺仍不成熟，有待进一步研究。 本文在课题组已研发的硫酸盐三价铬装饰性镀铬的工艺基础上，通过大量实验成功开发出硫酸盐三价铬电沉积厚铬工艺。采用X射线荧光测厚仪(XRF)、扫描电子显微镜(SEM)、X射线能量色散谱(E...The chromium coating has been widely used in automotive, electronics, daily hardware and aerospace fields because of its high hardness, good wear resistance, good corrosion resistance and decorative appearance. Traditional hexavalent chromium electroplating is harmful to the environment and human health because of its high toxicity, which can not meet the needs of green development. Compared with ...学位：理学硕士院系专业：化学化工学院_物理化学学号：2052014115160

Theoritical investigations of phase stability, elastic and thermodynamic properties of γ’ phase in Co-Ta based superalloys

Ni基高温合金因具备优异的高温力学性能、抗氧化性和抗燃气腐蚀性被广泛应用于航天领域中，这与其特殊的γ+γ’两相结构有着密不可分的关系。研究者们通过在Co-Al二元合金添加W元素提高了亚稳相Co3Al的结构稳定性。这种新型Co-Al-W三元系合金中的有序沉淀相γ’-Co3(Al，W)类似于Ni基高温合金中的γ’-Ni3Al，其结构稳定性和弹性性质是Co基高温合金具有良好的高温力学性能的关键。这一发现为开发多组分Co基高温合金提供了思路。在这种情况下，研究合金元素对Co基高温合金中亚稳相的结构稳定性的影响是非常必要的。 为了指导多组分Co基高温合金的设计和开发，基于密度泛函理论基础，本研究采用第...Ni-base superalloys are widely used in Aerospace field because of their excellent high temperature mechanical property, oxidation resistance and gas corrosion resistance. The high temperature comprehensive properties of Ni-base superalloys has inseparable relation with their special γ+γ’ two-phase structures. Researchers have improved the structural stability of metastable phase Co3Al by adding W ...学位：工学硕士院系专业：材料学院_工程硕士(材料工程)学号：2072014115013

Order Submission Behavior of Investors in Option Markets: Features, Information Content and Affecting Factors

投资者的下单选择是委托单驱动市场交易运行的基础，也是投资者交易策略的核心。目前，关于投资者下单行为的研究主要有两点局限性。一是研究集中于国外股票市场，尚未涉及衍生品市场。二是从全市场的角度研究投资者下单行为，而未区分投资者。本文运用台湾股指期权市场详细的委托单数据，围绕台湾股指期权市场境内机构投资者、境外机构投资者、个人投资者以及做市商的下单行为特征、信息含量以及影响因素展开深入研究，得到本文的主要结论如下： （1）本文实证分析四类投资者下单行为的特征，发现台湾股指期权市场中的所有投资者虽然偏好采用短期的平价期权和浅价外期权，以追求高流动性、高杠杆率以及高波动率敏感性，但他们仍是相对理性且有...Order submission by investors is the foundation of the order-driven market, and the heart of investors' trading strategies. So far, there are two main limitations of the research on order submission behavior of investors. One is that the research has focused on overseas stock markets, not on derivatives markets. The other one is that all studies are based on the whole market, not on the difference...学位：经济学博士院系专业：经济学院_金融工程学号：1562011015381

A Study on Current Situation, Trend and Investment Opportunity of Pension Industry in China

根据世界通行的标准中国从1999年进入了老龄社会。由于是在经济不发达的情况下进入老龄化社会，社会养老保障制度尚不完善，养老成为我国当前面临的一个十分突出的社会问题。 养老产业是为老年人群提供产品和服务的特殊产业,发展养老产业既有利于满足老年人的社会需求,形成健康老龄化社会,又有助于产业结构的调整和升级,缓解就业压力,减轻社会保障负担。全文分五章，第一章介绍研究背景和研究养老问题的社会意义；第二章分析养老产业现状和发展趋势；第三章针对中国养老产业的市场和投资机会进行了分析；第四章以爱心老人社区项目为案例，分析老年公寓项目可行性；第五章对全文总结并提出建议。 本文主要针对养老服务产业进行分析、...According to the international standard, China has entered the Aging Society since 1999. Because China entered the Aging Society under the condition of the developing of economy, the social endowment system is not well-developed and endowment becomes one of the problems which draw lots of attention. Pension industry is the special one which offers the senior citizen the products and service. Deve...学位：工商管理硕士院系专业：管理学院高级经理教育中心（EMBA项目）_高级管理人员工商管理硕士(EMBA)学号：20051509

硫酸盐体系三价铬沉积机理及镀层表征

在新研发的硫酸盐三价铬镀厚铬的镀液体系中,运用线性扫描伏安法（LSV）和循环伏安法（CV）对三价铬在铜电极表面的电沉积过程进行研究,并运用X射线荧光测厚仪、扫描电子显微镜（SEM）、X射线能量色散谱（EDS）、X射线衍射仪（XRD）、显微硬度计和Tafel曲线表征铬镀层厚度、形貌、组成、结构、显微硬度及在3.5wt%NaCl溶液中的耐蚀性.结果表明,在该体系中三价铬的沉积过程分两步进行(Cr3++e→Cr2+,Cr2++2e→Cr),第一步得到1个电子,受电化学过程和扩散过程共同控制;第二步得到2个电子,为扩散控制下的不可逆过程.该镀层为瘤状纳米晶结构,镀层中含有少量的铁元素（1.10wt%）,显微硬度达到789.2 Hv,镀层在3.5wt%NaCl溶液中的腐蚀电位Ecorr为-0.29 V,腐蚀电流密度jcorr为9.26×10-5A·dm-2.国家自然科学基金项目(No.21621091)资

New Image Interpolation Method Based on Ramp Edge Model

基于斜坡边缘模型的经典插值方法把所有边缘归为强边缘,导致弱边缘过分增强而失真。针对该问题提出基于斜坡边缘模型的图像插值新方法(nIIbrEd),对强弱边缘采用不同方法,考虑边缘宽度随图像放大而增大的情况,对放大图像进行修复。实验结果证明,nIIbrEd使放大图像的边缘更自然且清晰,取得了更好的纹理效果。Classical interpolation method based on ramp edge model considers all the edges as strong edges,which results in weak edges' distortion.Aiming at this problem,a New Image Interpolation method Based on Ramp EDge model(NIIBRED) is proposed,which uses different methods for strong edges and weak edges.This method considers that the edges generated in the enlarged image do not have the same width,and reconstructs the enlarged image.Experimental results show that NIIBRED can make the enlarged image's edges more natural and clearer,and obtain better texture effects.国家自然科学基金资助项目(60472081);航空科学基金资助项目(05F07001

Medication rules in the treatment of digestive system neoplasms of WANG Yan-hui

目的:基于中医传承辅助平台软件,分析王彦晖教授治疗消化系统肿瘤的用药规律。方法:收集并筛选王教授于厦门燕来福国医堂治疗消化系统肿瘤病案,录入中医; 传承辅助平台软件,运用软件集成的数据分析方法,分析王教授治疗消化系统肿瘤的用药规律。结果:筛选出治疗消化系统肿瘤处方672首,分析得出其治疗消化; 系统肿瘤常用药物包括茯苓、陈皮、姜半夏、莪术、三棱、党参、白术、龙骨、牡蛎等,并演化出4首治疗消化系统肿瘤的新处方。结论:王教授治疗消化系统肿瘤; 以益气健脾、理气化痰、祛瘀散结为基本大法,扶正祛邪并重,同时根据闽南地区脾虚湿盛的致病特点重视健脾袪湿治法,并兼顾安神、止痛等治法以综合调理患者; 的机体状态。Objective: To study the medication rules in the treatment of digestive; system neoplasms of professor WANG Yan-hui using the traditional Chinese; medicine inheritance support system software (TCMISS, V2.5). Methods:; The prescriptions used by professor WANG Yan-hui in treating digestive; system neoplasms at the Yan-Lai-Fu Chinese Medicine Clinic were; collected as input data into TCMISS and were analyzed by software; integration method. Results: Totally of 672 prescriptions were selected; according to the collection standard in digestive system neoplasms; treatment. It was found that the most frequently used Chinese medicine; in these prescriptions including Tuckahoe, Pericarpium Citri; Reticulatae, Pinellia Tuber, Rhioxma Curcumae Aeruginosae, Rhizome of; Common Burreed, Root of Pilose Asiabell, Rhizome of Largehead; Atractylodes, Fossilizid, Oyster Shell, and so on. Furthermore, four new; prescriptions for treating digestive system neoplasms were created.; Conclusion: The core rules of professor WANG Yan-hui in treating; digestive system neoplasms were invigorating spleen and replenishing qi,; regulating qi-flowing for eliminating phlegm and dispelling stasis and; resolving hard mass, which means that strengthening vital qi and; eliminating pathogenic factor are equally emphasized in his; prescriptions. Besides, taking into consideration the climate; characteristics of the southern Fujian, professor WANG Yan-hui attaches; importance to invigorating spleen for eliminating dampness, combining; with tranquillization and relieving pain to treating patients; comprehensively.国家自然科学基金项目; 教育部新世纪优秀人才支持计划; 福建省自然科学基金项目; 厦门市科技计划项

Fe@Fe2O3/石墨烯复合材料的制备与电化学性能研究

采用水热反应和高温固相反应方法合成了Fe@Fe2O3/石墨烯复合材料。运用扫描电子显微镜（SEM）、X射线衍射（XRD）、光电子能谱仪（XPS）和透射电镜（TEM）对复合材料进行了物理表征。结果表明,..

Electrochemical Nucleation of Au on n-Type Semiconductor Silicon Electrode Surface

在成功实现半导体硅表面电沉积致密金膜的柠檬酸盐镀金实际应用体系中,运用循环伏安和电位阶跃法研究了Au在n型SI(111)电极表面的电沉积过程和成核机理.结果表明,在该体系中,Au在SI表面呈现不可逆电极过程,成核过电位达到250 M V;根据COTTrEll方程求得扩散系数d=(1.81±0.14)x10–4 CM2 S–1;运用SCHArIfkEr-HIllS(SH)理论模型对比分析拟合实验结果,表明Au在n型SI表面遵循扩散控制下的三维连续成核机理;通过扫描电子显微镜观察Au初期成核、生长形貌,进一步证实了Au的三维连续成核机制,并讨论了阶跃电位和阶跃时间对Au核形貌和密度的影响.Cyclic voltammetry and chronoamperometry have been used to investigate the mechanism of gold electrodeposition on the n-Si(111) electrode surface from a citrate bath, which had successfully applied to directly electroplate a dense gold film on the silicon surface.The results show that Au electrodeposition on the n-type silicon surface is an irreversible process, and the nucleation overpotential reaches 250 m V.According to Cottrell equation, the diffusion coefficient(D) is calculated to be(1.81 ± 0.14) × 10-4 cm2 s-1.The Scharifker-Hills(SH) model was used to analyze the experimental data.Agreement between the fitting curves and the theoretical curves confirms that the nucleation process of Au electrodeposition on the n-type silicon surface follows the progressive nucleation mechanism with three-dimensional growth under diffusion control.To further confirm the progressive nucleation mechanism, scanning electron microscopy(SEM) was used to observe the nucleation and growth of Au deposits at the initial stage of electrodeposition.The SEM results show that the morphology and density of the Au deposits are affected by the electrochemical deposition potential and time.国家重大科学仪器设备开发专项(2011YQ03012406); 国家自然科学基金界面电化学创新群体(21321062)及国家自然科学基金(21373172)资助项目~

SARS-CoV N蛋白与人冠状病毒HCoV-OC43和HCoV-229E的交叉反应表位及特异表位的确定

为确定SARS-CoV N蛋白的特异抗原表位,对3种人冠状病毒SARS-CoV、HCoV-OC43和HCoV-229E N蛋白之间的交叉免疫反应进行了系统研究。构建了分别表达SARS-CoV、HCoV-OC43和HCoV-229E N蛋白的重组痘苗病毒,并制备了相应的小鼠免疫血清。用间接免疫荧光方法,检测了3种N蛋白的表达及其与3种冠状病毒免疫动物血清和SARS病人恢复期血清之间的反应。与此同时,用Western blot方法分析了原核表达的39个不同区段的SARS-CoV N蛋白与3种冠状病毒动物免疫血清和SARS病人恢复期血清之间的交叉反应性。免疫荧光检测结果表明,SARS-CoV、HCoV-OC43和HCoV-229E3种病毒的N蛋白在重组痘苗病毒感染的HeLa细胞中均可以特异表达;3种N蛋白之间存在明显交叉免疫反应。Western blot结果显示,SARS-CoV N蛋白的表位主要位于30~60aa、170~184aa、301~320aa和360~422aa;与HCoV-OC43的交叉反应表位主要位于30~60aa、90~120aa、204~214aa和320~360aa;与HCoV-229E的交叉反应表位主要位于30~60aa、150~160aa和301~360aa。含SARS-CoV N蛋白特异表位的重组肽N155b(60~214aa)和N185(30~214aa)只与SARS病人恢复期血清和灭活SARS-CoV免疫小鼠的血清反应,而不与灭活HCoV-OC43和HCoV-229E免疫的山羊血清产生交叉反应。上述结果为使用SARS-CoV N蛋白抗原进行特异诊断试剂的研究,提供了重要的实验依据