Structure, Magnetic and Electronic Transport Properties of New-Type Magnetic Nanocluster Assembled Thin Films

纳米粒子以及由它们构成的纳米结构材料由于具有尺寸效应、量子限域效应和界面效应，通常显示出许多不同于常规块体材料的磁、光、电等特性，在现代工业、国防和高新技术发展中充当着重要的角色。纳米粒子复合薄膜材料由于其兼有复合材料和纳米材料两者的优点，引起了越来越多的关注，并成为一个重要的前沿研究领域。 本论文的研究工作包括两个方面：1）利用纳米粒子束流复合薄膜沉积系统将由等离子体溅射惰性气体冷凝法制备的Fe65Co35合金纳米粒子原位封装到由常规磁控溅射制备的Ni0.5Zn0.5Fe2O4薄膜中，制备了[email protected]双磁性相纳米复合薄膜，并系统地研究了合金纳米粒子含量...Compared with the bulk materials, nanoparticles and nanostructure materials show many different magnetic, optical and electrical properties due to their size effect, quantum confinement and interfacial effect, and play an important role in the development of modern industry, national defence and high technology field. Especially the nanocomposite materials have drawn extensive attentions and becom...学位：工学博士院系专业：材料学院_材料物理与化学学号：2072012015331

Periodontal disease as a biofilm infectious disease: a hypothesis : Periodontal therapy by macrolide antibiotic

Caries and periodontal disease are two major oral diseases and are the infectious diseases due to dental plaques which are formed by intraoral bacteria. In 1999, Costerton proposed that they are biofilm infectious diseases. The systemic disorders due to biofilm include cystic fibrosis pneumonia and infective endocarditis. Biofilms are bacterial populations which are enclosed by extracellular matrix produced by bacteria per se and which adhere to each other and/or surfaces or interfaces such as medical devices. Importantly, bacteria in biofilm are resistant to antibiotics. Periodontal disease as a biofilm infectious disease is considered as below. Porphyromonas gingivalis is implicated in the initiation and progression or periodontitis. Periodontal disease-associated bacteria such as Porphyromonas gingivalis formed biofilm in periodontal pockets or on the surface of cementum. Planktonic bacteria from biofilm invade into periodontal tissues and lead to inflammation and destruction of tissues directly and indirectly by elicit host defense mechanism. Supragingival dental plaques are easily removed by professional mechanical tooth cleaning (PMTC), while subgingival biofilm and bacteria invading into periodontal tissues are difficult to be removed. Therefore, the development of novel methods for periodontal disease is needed to eliminate these biofilms efficiently. Recently, we examine the effect of azithromycin to in vitro biofilm model, which is made of Streptococcus gordonii and Porphyromonas gingivalis to confirm these clinical findings in vitro. Our results suggest that pharmacotherapy to destroy biofilm using antibiotics such as erythromycin and azithromycin is effective and necessary for the treatment of periodontal disease. In addition, our group demonstrated that systemic administration of azithromycin is clinically effective to the treatment of early-onset (aggressive) periodontitis and shorten the period of initial preparation. These results suggest that pharmacotherapy to destroy biofilm using antibiotics is effective and necessary for the treatment of periodontal disease

中国における都市集合住宅の管理システムに関する研究

博士(学術)大阪市立大

烟台近海大型底栖动物群落特征

根据2010年和2011年对烟台近海大型底栖动物的周年调查资料,采用优势度指数、物种多样性指数及Cluster聚类和MDS排序方法,进行群落特征和群落演替情况的。研究。结果表明,该海域共采集大型底栖动物176种,其中优势类群为多毛类。群落中的优势种主要包括短叶索沙蚕和不倒翁虫。烟台近海年平均生物量和丰度分别为16.72g/m~2和1022ind/m~2,且存在季节性差异。丰富度指数(D)、均匀度指数(J)和多样性指数(H')的年平均值分别为2.30、0.70和1.91。烟台近海大型底栖动物群落与底质和水深关系密切。群落特征发生了一定程度的变化,软体动物比例减少,多毛类比例增加。人类活动包括污水排放、养殖和捕捞、港口建设和船舶航运等干扰是导致上述变化的主要原因

Financial Flexibility,Product Market Competition and Capital Structure

以2001-2014年中国A股上市公司为样本,将财务灵活性价值和产品市场竞争状况纳入资本结构的分析框架进行研究。结果表明:在其他条件不变的情况下,财务灵活性价值越高,公司的财务杠杆越小;除了掠夺风险与市场杠杆之间的关系不显著之外,产品市场竞争与财务杠杆正相关;由于受到严格的监管,公司在中国资本市场上的股权融资难以实现,产品市场竞争所引致的融资需求会减弱财务灵活性价值对资本结构的负向作用。This paper uses the A shares of listed companies for the period 2001-2014 to estimate and compare the value of financial flexibility. We use three different measures of product market competition:predation risk, HHI and the number of listed companies,then we analyzes the effect of financial flexibility and product market competition on capital structure of Chinese listed companies. The conclusions show that, ceteris paribus, the capital structure negatively related to the value of financial flexibility. Subjected to the supervision of CSRC, except for predation risk shows no significant effect on market leverage,other results show that the leverage of listed companies increase with the strength of product market competition;the effect of the value of financial flexibility on the capital structure is weakened by product market competition.国家自然科学基金项目(71472160);; 教育部人文社会科学规划项目(20120121110041

欧盟替代国制度及应对策略

对正常价值的认定和运用是判断出口国商品是否存在倾销以及裁定倾销幅度大小的重要环节。正确理解和掌握欧盟对正常价值的认定方法,有助于我们运用正确的策略应对欧盟对我国进行的反倾销调查。文章就欧盟的反倾销法中如何认定正常价值作了简单的阐述与分析,介绍了非市场经济地位对我国的影响,同时提出了我国政府及企业的应对措施

Study on the Treatment of Surface-cleaning Wastewater by Photocatalytic Oxidation and Inner Electrolysis

摘要 电子产品的清洗是电子产品生产过程中的一个重要环节，所产生的废水含有大量洗涤剂，难以生化降解，其处理工艺目前尚不成熟。 本课题采用光催化氧化与铁碳内电解法对厦门市某电子工业企业所用清洗剂的配制废水进行了处理实验，研究了这两种处理方法的处理效果和主要影响因素，并探寻了将光催化氧化与铁碳内电解法组合处理电子工业清洗废水的可行性。经过实验研究，初步得到以下结论： （1）采用20W紫外灯为光源的光催化氧化过程中，反应处理，其最佳反应pH均为2；最经济纳米TiO2投加量为10g/L、10g/L、8g/L；最佳紫外灯光照时间分别为180min、120min、60min；反应后的出水CODcr分别...Abstract Cleaning is a very important step in electronic industry. The cleaning wastewater contains detergent. Its component is complicated and non-biodegradable. Treating cleaning wastewater effectively is an exigent task in the field of industrial wastewater treatment, but the present technics are not so mature. In this paper, the photocatalytic oxidation and the inner electrolysis are the chi...学位：工学硕士院系专业：海洋与环境学院环境科学与工程系_环境工程学号：2262006115237