Sources of urban organic aerosol and their relationship with hygroscopicity : Insights from fractionation analysis

doctoral thesi

Feasible Analysis on the Stock Repurchase of MX Company

股份回购是成熟资本市场上重要的金融工具，是国外公司经常使用的资本运营手段和经营策略，其具有替代股利分配、反收购、改善股权结构，实现股东财富最大化等各项功能。中国证券市场尚处发展阶段，股份回购起步较晚。从早期1992年的小豫园并入大豫园案到近期的电广传媒“以股抵债”等等股份回购的案例，基本上都是一种金融创新性质的探索与尝试，但其同样具有国外公司股份回购所具有的功能。本文对MX公司股份回购进行可行性分析，进而对我国股份回购的法律制度提出一些建议。本文的研究结构如下：第一章概括介绍股份回购的理论发展及目前资本市场上常见的股份回购的方式、股份回购的资金来源、股份回购的功能。第二章主要分析我国及世界玻璃...Stock repurchase is an important financial tool in mature capital market and is also a capital operation method and a kind of strategy often used by foreign companies. It has the function of replacing dividend allocation, anti-purchasing, improving stock construction and maximizing shareholder’s fortune. China’s securities business market is still in its growing stage, so the stock repurchase ...学位：工商管理硕士院系专业：管理学院工商管理教育中心_工商管理硕士(MBA)学号：X20011504

On Customer Segment Strategy of Butyl Acrylate

近年来，国内丙烯酸及酯市场在需求的拉动下快速发展，行业竞争日趋激烈。新上马项目的不断实施将造成产能过剩，从而增加企业的运行压力。这种新的营销环境使得客户的细分管理成为Y公司关注的焦点。 本文研究目的是从客户细分入手，建立起客户细分指标体系模型，深入剖析影响产业客户采购的因素，通过进一步细分市场来提升Y公司的盈利能力、为客户提供更好的服务，以实现客户服务与管理的最优化。 本文回顾了产业营销的相关概念，运用SPSS软件对销售数据进行相关性分析，重点采用了以客户价值为核心、兼顾分析客户行为特征的方法构建客户细分指标体系，并根据分析结果提出了市场营销策略建议。 建议包括：在区域客户上，对不同地区...In recent years, domestic Acrylic Acid and Esters market grew rapidly with the increase in demand, which led to the fierce competition in the industry. The new projects bring the over-capacity of production to the whole industry and increase the operating pressure to enterprises. This new operating environment caused customer segment to become the focus of Y company. The purpose of this paper...学位：工商管理硕士院系专业：管理学院工商管理教育中心（MBA中心）_工商管理硕士(MBA)学号：1792009115089

中国と日本における吉祥図案の研究 : 漢字を含む吉祥図案を中心に

愛知県立芸術大学2021年

Design and Implementation of Electronic Document Exchange System in the Certain Organs

I 摘要 电子公文交换是电子政务实现自动化发布交互的重要方式，它能够有效的利用计算机、互联网和通信技术，提高公文交换速率，增强机关办公效率。随着当今社会的快速发展，传统的公文交换方式已经难以满足时代的要求。为了适应互联网发展的大趋势，更好的获取外部信息，某机关急需建设电子公文交换系统，使某机关能够积累更多的信息数据，提升办公效率。 在设计和实现某机关电子公文交换系统时，本文采用了查询关键信息的方法，对公文的情况进行监控；采用了身份验证令牌eKey的方式，管理存储电子公章；采用公钥加密技术对电子公文、电子公章进行加密保护。通过对查询关键信息监控方法的使用，本文实现了已发收文的监控，建立已发...II Abstract Electronic document interchange is the foundation of the e-government construction. It is able to use the computer, Internet and communication technology. It improves the documents exchange rate, and enhances the efficiency of the organ department office. With the rapid development of today's society, the traditional way of document exchange has b...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201123015

Study on the Coupling of Urbanization and Tourism Based on Grey Correlation Analysis-Xiamen City as an Example

如何推动旅游业快速健康地发展，是世界各旅游国家与地区共同关注的问题。学术界和实业界大多倾向于从旅游资源的开发利用出发来探讨旅游业的发展问题。实际上，仅仅依托旅游资源的开发利用是远远不够的—特别是在城市化进程日趋快速，旅游业飞速发展的今天，旅游城市的城市结构更是旅游业赖以生存的基础和依托的资源；而要使城市化健康发展，也必须解决在社会—经济发展中具有举足轻重作用的旅游业发展问题。因此，本文对城市化与旅游业的关系进行探讨。 通过对城市化与旅游业相关研究的文献综述，我们发现，对于城市化与旅游业关系的研究尚未成熟、深度较浅。于是，本文在文献述评的基础上，论述了城市化与旅游业之间的耦合关系，并通过科学设...How to promote the development of the tourism industry rapidly and healthily is the issue of common concern by all tourism countries and regions in the world. In both the academic circles and industrial circles, researchers tend to discuss the issue of tourism development from the perspective of tourism resources development and utilization. Actually, it is far from enough if we only rely on the d...学位：管理学硕士院系专业：管理学院旅游系_旅游管理学号：1782007115163

Artificial local magnetic field inhomogeneity enhances T2 relaxivity

磁性探针作为分子影像技术中的磁共振成像（MRI）造影剂在医学诊断中发挥着重要作用。为满足实际诊断中的准确性和精确性要求，科研工作者们长期致力于发展高性能的MRI造影剂以降低高剂量的使用带来的潜在风险。该文章指出了探针聚集体中局域磁场不均匀性是影响T2弛豫效能的关键因素。该文章首次利用磁场不均匀性因素阐明了单个探针和它们聚集体的MRI造影剂之间的相互关系，将可能成为弥补探针聚集体的造影剂理论的空白，并为发展新型高效的MRI造影剂提供重要参考。 该论文共同第一作者为博士后周子健和博士生田蕊，通讯作者为陈小元教授和聂立铭博士，部分工作得到我校物理学系王瑞方教授和化学化工学院高锦豪教授的支持。【Abstract】Clustering of magnetic nanoparticles (MNPs) is perhaps the most effective, yet intriguing strategy to enhance T2 relaxivity in magnetic resonance imaging (MRI). However, the underlying mechanism is still not fully understood and the attempts to generalize the classic outersphere theory from single particles to clusters have been found to be inadequate. Here we show that clustering of MNPs enhances local field inhomogeneity due to reduced field symmetry, which can be further elevated by artificially involving iron oxide NPs with heterogeneous geometries in terms of size and shape. The r2 values of iron oxide clusters and Landau–Lifshitz–Gilbert simulations confirmed our hypothesis, indicating that solving magnetic field inhomogeneity may become a powerful way to build correlation between magnetization and T2 relaxivity of MNPs, especially magnetic clusters. This study provides a simple yet distinct mechanism to interpret T2 relaxivity of MNPs, which is crucial to the design of high-performance MRI contrast agents.This work was supported by the National Science Foundation of China (81571744 and 81601489), the National Basic Research Program of China (863 Program 2015AA020502), the Fundamental Research Funds for the Central Universities (20720170065), the Science Foundation of Fujian Province (No. 2014Y2004), and by the Intramural Research Program (IRP), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH). 研究工作得到了国家自然科学基金委、国家高技术研究发展计划863项目、福建省重大研发平台项目和美国NIH Intramural Research Program的资助

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雄激素不敏感综合征（AIS）是临床上较为常见的男性假两性畸形，属于性发育障碍疾病（DSD）的一种。患者的染色体核型为46，XY，目前认为是一种伴X连锁隐性遗传性疾病，患者可表现为一系列雄激素抵抗性临床症状，从无生育能力但外貌正常的女性到完全正常表型有原发性不育或者无精少精症的男性不等，给患者的身心健康带来严重的影响。福建省自然科学基金杰青项目（2015D012

Artificial local magnetic field inhomogeneity enhances T2 relaxivity

磁性探针作为分子影像技术中的磁共振成像（MRI）造影剂在医学诊断中发挥着重要作用。为满足实际诊断中的准确性和精确性要求，科研工作者们长期致力于发展高性能的MRI造影剂以降低高剂量的使用带来的潜在风险。该文章指出了探针聚集体中局域磁场不均匀性是影响T2弛豫效能的关键因素。该文章首次利用磁场不均匀性因素阐明了单个探针和它们聚集体的MRI造影剂之间的相互关系，将可能成为弥补探针聚集体的造影剂理论的空白，并为发展新型高效的MRI造影剂提供重要参考。 该论文共同第一作者为博士后周子健和博士生田蕊，通讯作者为陈小元教授和聂立铭博士，部分工作得到我校物理学系王瑞方教授和化学化工学院高锦豪教授的支持。【Abstract】Clustering of magnetic nanoparticles (MNPs) is perhaps the most effective, yet intriguing strategy to enhance T2 relaxivity in magnetic resonance imaging (MRI). However, the underlying mechanism is still not fully understood and the attempts to generalize the classic outersphere theory from single particles to clusters have been found to be inadequate. Here we show that clustering of MNPs enhances local field inhomogeneity due to reduced field symmetry, which can be further elevated by artificially involving iron oxide NPs with heterogeneous geometries in terms of size and shape. The r2 values of iron oxide clusters and Landau–Lifshitz–Gilbert simulations confirmed our hypothesis, indicating that solving magnetic field inhomogeneity may become a powerful way to build correlation between magnetization and T2 relaxivity of MNPs, especially magnetic clusters. This study provides a simple yet distinct mechanism to interpret T2 relaxivity of MNPs, which is crucial to the design of high-performance MRI contrast agents.This work was supported by the National Science Foundation of China (81571744 and 81601489), the National Basic Research Program of China (863 Program 2015AA020502), the Fundamental Research Funds for the Central Universities (20720170065), the Science Foundation of Fujian Province (No. 2014Y2004), and by the Intramural Research Program (IRP), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH). 研究工作得到了国家自然科学基金委、国家高技术研究发展计划863项目、福建省重大研发平台项目和美国NIH Intramural Research Program的资助