The Establishment and Demonstration of Circular Economy Evaluating Index System of Chemical Industry Synopsis

摘要化工行业是我国的支柱产业之一，也是原材料产业，在行业快速发展的同时不仅消耗了大量资源，也对生态和环境造成相当沉重的代价，即化工业面临着环境的严重污染和资源、能源的过度消耗问题。循环经济以“减量化、再利用、再循环”为原则，化工行业推行循环经济，可从根本上缓解资源、环境容量有限性和发展无限性间的矛盾。鉴于化工行业产品种类繁多，产污环节复杂，如何结合工艺特点，在企业层面上建立一个切实可行的循环经济发展模式，合理科学评价循环经济的实践效果，挖掘行业潜力，提出实施循环经济的对策措施，并加以推广应用，则是应该关注的重点和难点。基于此，本文在基础资料调查研究的基础上，综述循环经济理论与实践进展，分析我国...Abstract Chemical industry is one of our country’s pillar industry, and is a raw material industry. It not only consumes a lot of resources but also is at the expense of hurting ecology and environment badly during its high development. That is to say serious environmental pollution and over-consumption in resources and energy are major problems facing Chemical industry. Circular economy takes “RE...学位：理学硕士院系专业：海洋与环境学院环境科学与工程系_环境管理学号：2005130226

The Research of Infrared Imagery Transmission and Display Based on FPGA

红外热成像技术由于其成像具有独特特点，即可以全天候工作，能穿透云雾，能识别伪装等，得到各国的广泛关注和大力发展。 本研究针对红外热成像系统中的数据显示、传输和处理部分展开。首先详细分析和设计了基于FPGA（FieldProgrammableGateArray）的红外图像传输和显示系统，采用Spartan-3ADSP系列FPGA作为整个系统的控制核心。该系统划分为图像采集模块、图像存储控制模块、USB传输模块、图像增强模块以及LCD显示驱动模块，并采用VerilogHDL编程实现。 方案中的USB接口采用CypressEZ_USBFX2系列芯片，USB固件编程是设计的核心，利用EZ-USBF...Infrared thermal imaging technology gets world-wide attention and rapid development for its unique features,which can work around the clock,penetrate clouds and identify the camouflage. This study aimes at image diaplay, transmission and processing from infrared thermal imageing system.Firstly, analyzes and designs an infrared image transmission and display system based on FPGA in detail. In ...学位：工学硕士院系专业：信息科学与技术学院通信工程系_信号与信息处理学号：2332008115331

Research on the International Joint Bailout Mechanism in the context of the International Financial Crisis--From the perspective of the Great-Powers Coordination Mechanism Theory

全球金融危机的爆发使世界经济发展陷入了低迷，各国政府纷纷出台了救市措施以挽救危机中摇摇欲坠的经济体系。然而，由于经济全球化的影响，各国之间的经济相互联系、相互影响，救市政策必须在全球范围内进行合理的协调，才能对金融危机进行有效的治理。在目前的国际关系格局中，大国掌握着治理国际政治经济问题的资源和权力，救市政策的协调，本质上还是大国之间的协调。实践证明，二十国集团等大国协调机制在危机的救助过程中发挥了重要的作用，大国协调是国际金融危机治理的有效途径。金融危机的影响已逐渐散去，但是对于国际金融安全的治理，仍需要大国进一步地协调和合作。 第一章对相关概念进行了界定。首先对国际金融危机进行了界定，分...The global financial crisis makes the worldwide economic slump. Governments have taken bailout measures to salvage the faltering economic system. However, due to the impact of economic globalization, economy among countries links and influences each other. The bailout policy must be reasonability coordinated in the world, so that financial crisis can be effectively resolved. In the current pattern...学位：法律硕士院系专业：法学院_法律硕士(JM)学号：1302010115028

China's service trade development issues and countermeasures

在世界经济全球化和一体化背景下，世界服务贸易迅速发展，对世界经济发展所起的作用越来越大。如何结合本国的实际情况，抓住国际服务贸易发展所带来的机遇，日益成为各国政府和学者关注的重点。二十世纪九十年代，随着服务贸易总协定及其后续谈判的不断进行，世界服务贸易自由化水平逐步提高，各国间服务贸易的依赖性也不断加深，服务贸易自由化给世界经济带来了全新机遇的同时，也带来了更多的风险和挑战。2007年以来，世界金融危机的爆发和蔓延为服务贸易飞速发展的世界各国尤其像中国这样的发展中大国敲响了警钟。在此种世界经济环境下，理性地、全面地认识当前世界服务贸易的发展热潮，结合本国实际情况对服务贸易进行研究，认真总结世界...The world service trade has rapidly developed and its influence to the world economy is bigger and bigger in the background of the world economic globalization and integration. How to seize the opportunities of the development of international service trade on the basic of the country's actual situation become the focus of governments and scholars gradually. In the 1980s, General Agreement on Tari...学位：经济学硕士院系专业：经济学院国际贸易系_国际贸易学学号：X200714501

永安市生态养殖业发展状况及其SWOT分析

结合永安市养殖业发展状况与环境代价,利用SWOT方法对永安市养殖业发展循环经济的基础进行分析,得出永安市发展生态养殖业的主要优势、劣势、机遇与挑战,从保障体系角度对永安市生态养殖业的发展提出对策建议,可为同类城市发展生态养殖业提供参考和借鉴

Effects of pH on the PtRu/C Catalyst Prepared by Microwave-assisted Ethylene Glycol Process

以微波协助乙二醇工艺合成了碳负载不同粒径大小的PtRu/C纳米催化剂,主要考察了溶液pH值对PtRu粒子大小的影响.利用紫外可见光谱、能量散射X射线谱、透射电镜和X射线衍射谱对PtRu纳米催化剂进行了表征.结果表明,pH值是一个对PtRu粒子大小有着重要影响的因素.TEM结果显示随着溶液pH值的增加,PtRu粒径从3.5nm减小到1.5nm.当溶液pH值达到11.0时,由于金属粒子被保护,合成的催化剂中金属载量明显减少.溶液pH值在9.0左右合成的PtRu/C催化剂具有适宜粒径(2.4nm)和均匀分布的金属颗粒,具有最好的甲醇电氧化活性.PtRu nanoparticles supported on the carbon, with different mean particle sizes, were synthesized by microwave-assisted ethylene glycol process, the effects of pH on the PtRu/C catalyst were mainly investigated. UV-Vis spectroscopy, energy dispersive X-ray analysis, transmission electron microscopy, and X-ray diffraction were applied to characterize the PtRu nanoparticles. The solution pH had important influence on the metal particle size. TEM results indicated that the PtRu mean particle size decreased from 3.5 nm to 1.5 nm with the increase of pH value. However, when pH value reached 11.0, the metal loading of synthesized catalyst decreased distinctly because the metal nanoparticles were protected in solution. The results showed that the PtRu/C catalyst synthesized at pH ca 9.0, with appropriate particle sizes (2.4 nm) and homogenous dispersed particles, had the highest electrocatalytic activity for methanol electrooxidation among all the synthesized catalysts.国家自然科学基金(20673089);; 福建省科技重大专项(2005HZ01_3)资助项

大学基础课教师职称评定的误区与出路

随着大学基础课教学交接的全面展开,也同时出现两种值得注意的偏向,文中指出这些倾向的表现手法、错误实质以及应当树立的科学哲学观.文章还阐明:为了凝聚力量深化基础课教改、提高教学质量,就不应该在职称评定的问题上处处难为至今仍勤奋于基教第一线的中老年教师,而是应该创造和谐竞争环境,制订出科学的合情合理的晋升标准,提倡无形竞争,倡导不比意识

Application of a Variable-universe Fuzzy PID Controller for DC Motor Speed Control System

基于PId控制与模糊控制各自的优点,将模糊控制与常规PId控制相结合,并运用变论域的方法,设计了变论域自适应模糊PId控制器.然后,以直流电机为模型,实现对其转速的控制,使用MATlAb进行可行性研究,并将其仿真结果与PId控制和模糊控制的仿真结果进行比较.结果表明,基于直流电机的变论域自适应模糊PId控制器的控制效果明显优于常规PId控制和模糊控制.Fuzzy control and conventional PID control were combined in this paper;meanwhile,the method of variable universe was adopted.In this paper,a variable-universe and self-adaptive fuzzy PID controller was designed and utilized in a DC motor model to achieve the speed control of the DC motor.This paper used the tool of Matlab to complete this system's feasibility study and compared the simulation results with the PID control and fuzzy control's simulation results.The results showed that the control performance of the variable-universe and self-adaptive fuzzy PID controller was obviously better than PID control and fuzzy control

ZOLMITRIPTAN,A NEW ANTIMIGRAINE DRUG

综述了佐米曲坦的合成、药代动力学、临床疗效、不良反应及药物相互作用。The synthesis,pharmacodynamics,pharmacokinetics,ADRs,and drug interactions of zolmitriptan were reviewed

The performance of passive DMFC

研制了两只单体电池串联的被动式直接甲醇燃料电池(DMFC),无外部泵等辅助设施。考察了甲醇的浓度和温度、空气提供方式对单体电池性能的影响及单体电池的长期运行性能。单体电池在室温(25℃)下,贵金属载量为2.5 mg/cm2、甲醇浓度为3 mol/L时,性能最佳,峰值功率密度可达10 mW/cm2。提高甲醇温度和采用流动的空气,可提高电池的性能。单体电池在无水热管理系统1、00 mA放电的条件下,可在室温下连续、稳定地工作4 h。A passive direct methanol fuel cell(DMFC) with two single cells in series without auxiliary devices such as external pumps was designed and fabricated.The effects of methanol concentration and temperature,the air supply mode on the performance of single cell and the long-time operation performance of single cell were investigated.The single cell had optimal performance at room temperature(25 ℃) with 3 mol/L methanol and the noble metal loading was 2.5 mg/cm2,the peak power density could reach 10 mW/cm2.The increasing of methanol temperature and using flowing air could improve the performance of the cell.The single cell could work stably and continuously for 4 h at room temperature under the condition without water and thermal management systems and 100 mA discharge