all but dissertation
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The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.
论文的主要研究工作为:运用化学反应工程理论,结合硝基苯的电还原机理,设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽,并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据,研究了流型随流量变化的规律;通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性,初步评选出了用于硝基苯电还原的电极材料;结合循环伏安的测定结果,在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线,得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值;在基础研究结论指导下,采用板框式电解槽,在高温、强酸、贫氧系统中,进行了一系列的电解实验,分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响,最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜,得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件:反应温度85℃,电流密度500A·m~(-2),硫酸浓度20%wt。
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The author explicates some developing aspects in the field of IC industry as suggested areas of future work. The original points of this dissertation are as following: 1. In this dissertation, we got the quality learning curve of China's IC manufacturers by regression. On the base of questionnaire, we later explained the reason of the reverse S type quality learning curve and the tendency of change in quality learning curve. 2. The evolution of technical unit of China's IC industry is calculated in this dissertation. We also explained the reason of technical unit splitting in the way of economic and technology. 3. In this dissertation, we described the environment difference in capital, technology transfer, human resource and market in USA, Japan, Korea, Taiwan and China, and gave some suggestions on the government's role in the development of China's IC industry.. 4. In this dissertation, we established an SD model of China's IC industry, and by using this model, we got some suggestions for future development in China's IC industry.
本文的主要创新之处在于:(1)用回归分析方法实证研究了我国集成电路企业的质量学习曲线,并在调查分析的基础上,对反S型质量学习曲线的历史成因和未来走势进行了研究;(2)对世界及我国集成电路产业技术单元的变化趋势进行了定量研究,从经济和技术角度解释了当前集成电路产业技术单元细化的原因;(3)从资金、技术、人才、市场角度系统总结研究了发达国家在集成电路产业发展环境建设中的成功经验,并结合我国集成电路产业发展的实际情况,对我国集成电路产业发展的政府行为提出了一些建议;(4)建立了狭义集成电路产业、材料业、设备业发展的系统动态模型,并利用该模型对不同投资结构下我国集成电路产业系统未来的演变进行了模拟研究,这一研究结果可以为我国集成电路产业今后发展提供一定的决策依据。
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I'm taking a moment just imaginin' that I'm dancin' with you I'm your pole and all you're wearing is your shoes You got soul, you know what to do to turn me on until I write a song about you And you have your own engaging style And you've got the knack to vivify And you make my slacks a little tight, you may unfasten them if you like That's if you crash and spend the night But you don't fold, you don't fade You've got everything you need, especially me Sister you've got it all You make the call to make my day In your message say my name Your talk is all the talk, sister you've got it all Curl your upper lip up and let me look around Ride your tongue along your bottom lip and bite down And bend your back and ask those hips if I can touch Because they're the perfect jumping off point of getting closer to your Butterfly Well you float on by Oh kiss me with your eyelashes tonight Or Eskimo your nose real close to mine And let's mood the lights and finally make it right But you don't fold, you don't fade, you've got everything you need Especially me Sister you've got it all You make the call to make my day In you message say my name Your talk is all the talk sister you've got it all You've got it all, you've got it all, you've got it all (2x) Doll I need to see you pull your knee socks up Let me feel you up side, down slide, in slide, out slide, over here Climb in my mouth now child Butterfly, well you landed on my mind Dammit you landed on my ear and then you crawled inside Now I see you perfectly behind closed eyes I wanna fly with you and I don't wanna lie to you Cause I, cause I can't recall a better days I'm coming to shine on the occasion You're an open minded lady You've got it all And I never forget a face If I'm making my own I have my days Let's face the fact here, it's you that's got it all You know that fortune favors the brave Well let me get paid while I make you breakfast The rest is up to you, you make the call You make the call to make my day In your message say my name Your talk is all the talk, sister you've got it all Cause I can't recall a better day I'm coming to shine on the occasion You're a sophisticated lady, oh you've got it all You've got it all, you've got it all, you've got it all (3x) You've got it all, you've got it all….
我是在一窝窝成像一刻',我是丹霉素'你我是你的杆位和所有你穿你的鞋你有灵魂,你知道该怎么做,我就打开直到我写一首歌曲和你有自己的风格进行和你一把刷子为维维风云你打我的裤子有点紧,你可以解开他们,如果你喜欢这是如果你发生碰撞过夜但是,你不能折叠,你不褪色你有你需要的一切,尤其是我妹妹你有这一切您拨打电话让我的一天在您的邮件说我的名字你说是大家都在谈论,姐姐你有这一切你的上唇卷曲起来,让我环顾四周凑凑热闹你的下嘴唇咬自己的舌头,下和弯曲你的背部和臀部的要求,如果我可以触摸因为他们的完美跳的越来越近点的轻便铁路蝴蝶站那么你就浮动噢亲吻你今晚我的睫毛你的鼻子或爱斯基摩人真正接近我让心情的灯光,终于使正确但是,你不能折叠,你不褪色,你有你需要的一切尤其是我妹妹你有这一切您拨打电话让我的一天在你的信息说我的名字你说是大家都在谈论你妹妹了这一切你有这一切,你有这一切,你有这一切(2倍)娃娃我要看到你拉你的膝盖袜子了让我觉得你边上,向下滑动,在幻灯片,幻灯片出在这里,在我的嘴里攀登现在的孩子蝴蝶,以及你降落在我的脑海就叫你落在我的耳朵,然后里面爬现在我看到完全不公开你的眼睛我想和你飞,我不想骗你原因一,原因我不记得一个更好的日子我来照留念你是一个开放的态度夫人你有这一切我永远不会忘记的面孔如果我做我自己我有我的天让我们面对事实,在这里,是你的了一切你知道财富的勇敢的主张那么让我得到报酬,而我让你早餐接下来就看你,你拨打电话您拨打电话让我的一天在您的邮件说我的名字你说是大家都在谈论,姐姐你有这一切原因我不记得一个更好的一天我来照留念你是一个复杂的夫人,哦,你有这一切你有这一切,你有这一切,你有这一切(3倍)你有这一切,你有这一切。。。。
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academic costume:学位服
学位|academic degree | 学位服|academic costume | 学位论文|academic dissertation; dissertation
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academic year; school year:学年
博士学位 doctorate; doctor's degree; doctoral degree | 学年 academic year school year | 学位论文 academic dissertation dissertation
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I all but stumbled:我差一点摔跤
all but 差不多,几乎;除了...都 | I all but stumbled. 我差一点摔跤. | That's all but impossible.那几乎不可能.