英语原文共 9 页， 中 文名 称 高能量密度、低损耗的高脉冲电容器用聚乙烯甲基 摘要： 高能量密度、低能量损耗的介电聚合物薄膜电容器是一种非常理想的电容器紧凑的电子设备和高功率密度的电子系统。克服高介电损耗以聚偏氟乙烯为基的铁电聚合物，在本工作中，研究了一系列反铁电的聚采用原子转移自由基聚合方法成功地合成了偏氟乙烯-三氟乙烯-三氟氯乙烯-苯乙烯-甲基甲基丙烯酸酯(PVDF-MS)共聚物。其优点包括PMMA与PSt和PVDF均具有良好的混相性所合成的共聚物结合了PSt段具有良好绝缘性能的特点。增加的P(St-MMA)(MS)侧链的引入导致能量显著增强与原始P(VDF-TrFE-CTFE)相比，密度低，导电损耗和能量损耗小。最高的能量密度为17 ，放电效率为87% (600 MV)将样品中含有28 wt% ms的优良介电和电容性能接枝而成共聚物为合成具�

Policy analysis Public policy began with the systematic analysis of data for governmental purposes. The word statistics derives from state, but policy was not greatly informed by numbers though there were some experiments in the use of statistics from the 1930s through to the 1960s. More occurred after 1960 with the implementation of large-scale government programmes by the Kennedy and Johnson administrations. The size and complexity of the 1960s social programmes led to a demand for better analysis. Mathematical techniques deriving from Rand or the United States Defense Department under Robert McNamara could conceivably be applied to the public sector. It was an age of science. It was an age in which any problem was seen as having a possible solution which could be discovered through the proper application of the scientific method. Related to the belief in solutions was the availability of large-scale computers and suitable software for processing statistical data to levels of

Public Policy and Policy Analysis Introduction By the early 1970s, some involved in the study of public policy consciously and deliberately distanced themselves from the discipline of public administration. Most public policy practitioners at the time saw it as concerned with the application of formal, mathematical methods to solving public sector problems. Public policy is important in its own right and as an influence on public management, but again raises the question as to whether there is still something distinctive about public administration. Public policy is yet another way of studying and characterizing the interaction between government and its clients, while policy research or policy analysis are other terms for much the same thing. Public policy could be seen as a reaction to and critique of the public administration tradition or as the long overdue adoption of formal techniques by the public sector. In either case, it needs some discussion. Another usage of

英语原文共 21 页， 英语译文共 19 页， 资料编号：[264262]，资料为PDF文档或Word文档，PDF文档可免费转换为Word

英语原文共 19 页， 英语译文共 19 页， 资料编号：[264263]，资料为PDF文档或Word文档，PDF文档可免费转换为Word

英语原文共 14 页， 英语译文共 9 页， 资料编号：[264278]，资料为PDF文档或Word文档，PDF文档可免费转换为Word

英语原文共 8 页， 英语译文共 12 页， 资料编号：[264256]，资料为PDF文档或Word文档，PDF文档可免费转换为Word

英语原文共 15 页， 英语译文共 17 页， 资料编号：[264245]，资料为PDF文档或Word文档，PDF文档可免费转换为Word

英语原文共 8 页， 英语译文共 8 页， 资料编号：[264281]，资料为PDF文档或Word文档，PDF文档可免费转换为Word

英语原文共 12 页， 两种不同孔径膜厌氧膜生物反应器在城市污水处理中的应用 摘要 孔径是膜生物法处理城市污水成功运行的重要特性之一。在室温(25℃)、不同水力停留时间(HRTs)条件下，采用两种厌氧膜生物反应器(AnMBRs)，孔径为0.4mu;m的中空纤维膜(AnMBR1)和孔径为0.05mu;m的中空纤维膜(AnMBR2)处理城市污水。在长期连续运行过程中，对工艺性能进行了评价，包括有机去除效率、沼气产量和膜过滤行为。两种(AnMBRs)均表现出良好的有机物去除性能，COD和BOD去除率分别达到89%和93%左右。该技术具有较高的能量回收潜力，沼气产率在0.20~0.26 L-gas/g-CODrem之间，甲烷含量约为75%。两种(AnMBRs)膜过滤性能的差异包括不同的渗透通量和总过滤阻力(Rt)。在(AnMBR1)0.4mu;m孔径膜中，当渗透通量为0.274 m/d时，平均Rt 1.08times;10^12 m-1；而在孔径为0.05mu;m的(AnMBR