Research and Design of Retrieval System for Early Tang Dynasty Regular Script Font

随着社会的发展，数字资源的使用越来越受到人们的重视，如何高效的利用数字资源成为当今的热点话题。图像检索技术的出现使得数字资源的高效利用成为可能，该项技术是一种基于内容的综合检索技术，它综合了多种学科，这种技术现在大多应用于图书馆的目录检索和专业图库方面的检索。虽然基于形状特征的图像检索技术的应用有很多其他相关技术无法比拟的优点，但是由于物体具有稳定性的特征以及目前还没有对该项技术进行有效的定义，这使得这种技术在研究过程中遇到了很多的难题，但其仍是人们当前研究的热点问题。 本文通过对初唐时期楷书字体的分割、特征提取、聚类和典型度量方法一系列步骤，建立一个有关初唐楷书字体的特点和字形独立数据库，...With the development of the society, the usage of the digital resources is more and more important. It’s a hot issue how to use the digital resources efficiently. The emergence of the image retrieval technology makes it possible of efficient use of digital resources. The technology is a content-based retrieval technique. It is combined with many other technologies. It’s mainly used in professional...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201023010

FENE-p Simulations of Wormlike Micellar Solutions

胶束高分子间的互相缠结导致蠕虫状胶束溶液展现出粘弹性。并且在没有流场下，溶液中的胶束高分子还会不断地发生断裂和聚合。实验结果表明，在不同流场中，蠕虫状胶束溶液呈现出复杂的流变行为。因此，数学模拟是研究蠕虫状胶束溶液的一种重要的方法。 本文首次提出了FinitelyExtensibleNonlinearElastic-Peterlin(FENE-p)下蠕虫状胶束溶液断裂聚合的宏观模型，在Vasquez-Cook-McKinley(VCM)模型中采用预平均化的非线性FENE-p弹簧张力代替原有的线性虎克弹簧张力，并在均匀应变速率场和泰勒－库艾特剪切流中对建立的宏观模型所描述的行为进行了数值模拟。...Entanglements among micellar polymers result in a viscoelastic behavior of the wormlike micellar solutions. Also, the micellar polymers in a solution without motion break and reform continuously. Experimental results indicate that a wormlike micellar solution exhibits a complex rheological behavior in flow fields. Therefore, the mathematical simulation is an important method to study wormlike mice...学位：理学硕士院系专业：数学科学学院数学与应用数学系_应用数学学号：1902009115227

探析中泰传统医学经脉系统穴位的异同

泰医经脉系统是传统泰医的核心基础理论之一,是指导泰式按摩疗法的理论基础。与中医相似,泰医经脉系统穴位是传统泰医的重要组成部分。本文深入探讨与总结泰医穴位的分布、主治规律及具体操作手法,对认识泰医经脉系统具有重要意义。通过分析中泰经脉穴位的异同,可对中医经络系统起到取长补短的作用。由于泰医经脉系统的独特性,促进泰医经脉系统穴位的传承发展,加强泰医经脉系统的对外交流,对促进世界传统医学的发展创新具有极大的推动作用。中国中医科学院“十三五”重点领域研究专项第一批(ZZ10-011-1-2

中泰传统医学经脉系统比较探析

经脉系统是中泰传统医学的核心基础理论之一。泰式按摩疗法和中医针灸、推拿均在经脉系统理论指导下形成,在疾病防治和健康促进方面取得了举世瞩目的临床疗效。因此,系统总结中泰传统医学经脉系统的形成、分布规律和临床应用,对于分析比较两种传统医学经脉系统的异同及促进世界传统医学的交融和发展具有积极的推动作用。中国中医科学院“十三五”重点领域研究专项第一批(ZZ10-011-1-2

近年来澳大利亚的经济形势与存在问题

一、值得惊奇的十年经济增长 [经济增长] 澳大利亚自从摆脱了1990年度(1990年7月—1991年6月)的经济衰退以后一直持续取得平均为4％的经济增长率。第一表列示自2001年1月到9月(即第一季度到第三季度)的澳大利亚的经济增长率与物价上涨率,在已换算为年增长率和年上涨率后跟其他主要欧美资本主义发达国家的经济成绩相比较的结果。消费者物价指数虽然较高,但没有超出澳大利亚

MnO/Nitrogen-doped graphene composite cathode for high performance lithium oxygen batteries

本文采用水热法制备了MnO/氮掺杂石墨烯复合材料. 作为非水锂空气电池的正极催化剂, 该复合材料表现出了优异的电化学性能以及循环稳定性.; 在充放电电流密度为0.05 mA cm~(-2)时, 其能量效率高达84.6%, 远高于目前文献所报道的非贵金属催化剂的能量效率,; 也超过了基于贵金属的催化剂. 其氧还原反应(ORR)和氧析出反应(OER)的过电势分别仅为0.11和0.41 V.; 扫描电子显微镜(SEM)和透射电子显微镜(TEM)结果表明, 所制备的MnO纳米颗粒能够均匀地分散在氮掺杂石墨烯的表面.; 密度泛函理论(DFT)计算揭示, MnO(100)面是主要的催化活性面, 其理论ORR和OER的过电势分别仅为0.21与0.24 V,; 充放电电势差为0.45 V, 与实验结果0.52 V相当.MnO/nitrogen-doped graphene (MnO/NG) composite cathode was fabricated by; a facile one-pot method as cathode catalyst for non-aqueous lithium; oxygen batteries. It exhibited superior electrochemical performance with; higher round-trip efficiency and better cyclic stability. It showed a; high round-trip efficiency of 84.6% at the current density of 0.05 mA; cm~(-2) with the discharge and charge overpotentials of 0.11 and 0.41 V,; respectively. Through scanning electron microscopy, transmission; electron microscopy and X-ray photoelectron spectroscopy, it was; confirmed that MnO nanoparticles were homogeneously dispersed on NG; surface. The density functional theory calculations demonstrated that; the superior electrochemical performance of MnO/NG might be attribute to; the exposure of stoichiometric MnO (100) surface, with the ORR and OER; overpotential only to be 0.21 and 0.24 V, respectively. The; discharging-charging voltage gap is 0.45 V, in good agreement with the; experimental value of 0.52 V.国家重点基础研究发展计划; 国家自然科学基金; 国家基础科学人才培养基

Investigation of Mixed Potential in Electroless Ni-W-P Plating

　测量了化学镀Ni P和Ni W P过程混合电位随时间的变化,并分析其变化规律。指出Emix的正移与pH值随时间而降低有关,而且pH值的降低会加速化学镀的诱发过程。低碳钢诱发化学镀Ni W P会在混合电位 时间曲线上出现两个电位阶梯,其原因在于低碳钢在给定的镀液体系中稳定电位不够负,不能提供足够的能量使化学镀Ni W P快速发生,只有当表面形成达到一定覆盖度的具有催化活性的Ni原子层后,才能迅速地诱发化学镀过程;而Ni P和Ni W P的稳定电位足够负,可以使化学镀过程快速诱发,故仅有一个电位阶梯。The mixed potentials as a function of time were measured during the process of electroless Ni\|P and Ni\|W\|P plating, and their patterns were also analyzed. It was indicated that the positive shift of Emix was related to the pH value which decreased with time, and that the decrease in pH could accelerate the initiation of electroless plating. Two potential steps were observed on Emix\|t curves when the mild steel was used as the substrate of electroless Ni\|W\|P plating because of its less negative stable potential, which couldn't supply enough energy for rapid electroless deposition of Ni\|W\|P, and none but a layer of catalytic nickel with considerable coverage on mild steel was needed for rapidly initiating the electroless plating. However, since sufficient negative stable potentials, Ni\|P and Ni\|W\|P were able to initiate electroless deposition rapidly, hence only one potential step was found.国家自然科学基金资助项目(20073035

Synthesis, Characterization and Photovoltaic Effect of Porphyrin-fullerene Compounds MP-C_(60)(M=Zn,Cu,Co)

采用1,3-偶极环加成反应,合成了共价键连卟啉-富勒烯配体(H2P-C60)及配合物MP-C60(M=Zn,Cu,Co)。利用红外光谱、元素分析、紫外-可见光谱、核磁共振氢谱及质谱等手段对产物进行表征。同时对产物的光电转换性能进行了研究。光伏效应结果表明,产物具有优良的光电转换性能。尤其在O2/H2O介质电对中,光生电压值最大可达到195mV,镀层厚度在1μm时,光伏效应值最大。The covalently linked porphyrin-fullerene ligand was synthesized through 1,3-dipolar cycloaddition reaction. The metalloporphyrin-fullerene was prepared by metalation of H_2P-C_ 60 and M(Ac)_2·nH_2O (M=Zn,Cu,Co). They were characterized by methods of FT-IR, Uv-Vis, ~1H NMR, ESI-MS and elemental analysis. The photovoltaic of the compounds was studied. The result showed that heterojunction electrode formed by MP-C_ 60 /GaAs was good, especially in the O_2/H_2O redox couple, and the greatest value of photovoltaic potential was 195mV. MP-C_ 60 /GaAs electrode at 1μm for thinckness of MP-C_ 60 film was the best one.福建省自然科学基金(E0410001);; 厦门大学自选课题基金(0040-Y07008)资助项

Synthesis and Characterization of Covalently Linked Porphyrin-fullerene Compounds

The covalently linked porphyrin-fullerene dyads were synthesized. The ligand 5-[4′-(4″-Phenoxybutoxy)phenyl]-N-(2-methyl)fulleropyrrolidine-10,15,20-tri-(p-methoxyphenyl)porphyrin (H2P-C60) was synthesized by 1,3 dipolar cycloaddition reaction with C60, sarcosine and H2P-CHO. The zinc porphyrin-fullerene was prepared by metalation of H2P-C60 and zinc acetate. The compounds were characterized by meams of IR, UV-Vis, ESI-MS, elemental analysis, and 1H NMR.福建省自然科学基金项目(No.E0410001);; 厦门大学自选课题基金项目(No.0040-Y07008

Synthesis and photoelectric effect of a new fullerene[70] ruthenium complex

合成了新的富勒烯[70]钌配合物,通过元素分析、红外光谱、光电子能谱(XPS)及31P NMR的多种手段对其进行了表征.结果表明该配合物分子内存在超共轭效应,共轭电子多,离域性好.通过光伏效应装置研究了其光电性能,结果显示该配合物具有良好的光电性能.The fullerene complex,C_(70)[Ru(NO)(PPh_(3))]_(6), is synthesized and characterized by means of elemental analysis,IR,XPS and ~(31)P NMR.The photoelectric effect of the fullerene complex is studied.The results show that the photoelectric effect of the fullerene complex is better than that of pure GaAs electrode,and the photoelectric effect depends on the thickness of the sample film,the media and the amount of the organic metal group.福建省自然科学基金资助项目(E0410001);; 厦门大学自选课题基金资助项目(0040-Y07008