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This dissertation involves the study of the growth dynamics of colloidal particles under unequilibrium and irreversibility condition. Firstly, it is of interest to investigate whether the ideal diffusion or reaction-limited aggregation universal behavior can be observed for the initially polydisperse practical system of basic yttrium carbonate as well. The fractal structure of basic yttrium carbonate aggregate cluster was observed using transmission eletron microscopy. The aggregation kinetics of basic yttrium carbonate colloids was studed using dynamic 1ight-scattering techniques. At 1.00mol/l NaCl solution the fast diffusion-limited aggregation behavior was observed with an increase in the aggregate size over time described by a power law. The aggregates are characterized by a fractal dimension D=1.82. The disordered and ramified cluster is consisted of primary colloidal particles and tenuous and more open. These are in good agreement with those observed for other colloidal system such as colloidal gold (1.86), silica (1.85) and polystyrene latex (1.82) in diffusion-limited aggregation from the static and dynamic light scattering by Lin. Therefore ideal diffusion-limited aggregation behavior can be observed in practical polydisperse system as well. Smoluchwski and fractal theories were used to obtain the aggregation rate constant for initially polydisperse system for the first time.
本论文研究胶粒的非平衡不可逆聚集动态学,分为两个部分,第一部分是通过实验研究一个新的初始多分散的碱式碳酸钇胶粒实际体系中,聚集标度性质的普适性,即使用透射电子显微技术观测聚集粒子簇的分形结构,使用动态激光光散射研究碱式碳酸钇胶粒的聚集动力学,胶粒带电而产生静电排斥作用使得碱式碳酸钇胶粒处于稳定状态,当加入电解质NaCl溶液时,碱式碳酸钇胶粒间的Debye-Hückel屏蔽距离缩短,从而降低静电排斥能垒,引起胶粒发生不可逆聚集,加入电解质NaCl的浓度为1.00mol/l时,碱式碳酸钇胶粒进行快速聚集,经历扩散控制聚集机理,形成结构疏松、更为开放的分形聚集粒子簇,其分形维数为1.82,碱式碳酸钇胶粒聚集增长动力学遵循幂函数增长规律,与Lin等使用静态激光光散射和动态激光光散射测量硅胶(1.85)、金胶(1.86)和聚苯乙烯胶乳(1.82)在扩散控制聚集状态形成聚集粒子簇的分形维数值以及粒子簇聚集增长的动力学规律相一致,表明胶粒聚集标度性质的普适性质在初始多分散的实际体系中也是存在的,首次由动态激光光散射的实验数据得到初始多分散胶粒分形粒子簇的聚集速率常数,并且其值与Smoluchowski聚集速率理论预期相符。
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Three kinds of BCRC No.51534, 10322 and 10675 would be selected and acted as an experimental sample of Escherichia coli. Results shows that Escherichia coli of No.51534 will appear better performance because the maximum of open circuit voltage, closed current and power density are 1.01V, 22mA and 1342mW/m2, respectively. Concerning the effect of culture time with respect to different phase type on the electricity performance of MFCs, the time points on the intersection between lag phase and logarithmic phase, the middle of point of stationary phase for growth curve of Escherichia coli would appear a good performance of MFCs. In addition, the BCRC No. 51534 Escherichia coli possessing a better performance of MFCs than others would be suggested and applied to further studying. Comparison with the performance of MFCs with respect to electron mediator under different mole number, result shows that electron mediator of methylene blue with 4.63mM would appear a better electricity performance of MFCs than others. Concerning the different material of proton exchange membrane with PTFE-Nafion, Nafion 211, 212 and 117 with respect to the performance of MFCs, result shows that the Nafion 117 applied in MFCs will have a better performance of MFCs than other cases. Finally, the effect of molar concentration on the performance of MFCs would be expected at the studied cases of 0.4M, 0.2M, 0.1M and 0.05M respectively for cathode oxidant, result shows that a good performance of MFCs will happen at the condition of 0.2M. Those observations will be useful to improvement of MFCs in the further study.
於上述电池系统条件下,进行大肠杆菌生长曲线、电子传递介质、质子交换膜、电极与阴极氧化剂对电池电性效能分析;选择编号10322、10675与51534之大肠杆菌为实验菌株,依定量培养之生长曲线取出代表不同时生长特性时期的培养时间,利用亚甲基蓝作为电子传递介质进行实验分析从所测得的电量进行分析,以编号51534之大肠杆菌的微生物燃料电池有最大的开路电压为1.01V及最大闭路电流为22mA;当极化曲线中电压为0.47V、电流为11.4 mA时有最大的功率密度为1342 mW/m2;加以负载有平均工作功率密度294 mW/m2;从生长曲线与电性效能来分析,得知生长曲线的迟滞期与对数期的转变点与静止期的中间点有最佳电性效能表现;对於加入不同莫耳数之电子传递介质methylene blue、neutral red与thionine之电池效能表现,则以加入4.63mM methylene blue电子传递介质的电池有较佳平均功率密度230 mW/m2;另对於质子交换膜PTFE-Nafion、Nafion 211、Nafion 212与Nafion 117之电池效能表现,以Nafion 117质子交换膜的电池有较佳平均功率密度340 mW/m2;对於分析加入不同莫耳数浓度0.4M、0.2M、0.1M与0.05M的阴极氧化剂之电池效能,则以0.2M的阴极氧化剂的电池可得到较佳平均功率密度429 mW/m2。
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However, join the commitment that makes when WTO according to the regulation of WTO and China, active judicatory examines system to cannot get used to the requirement of WTO regulation, the affiliation that also cannot satisfy China the acceptance of world trade, the lawsuit of international trade administration that reforms China so examines limits, become with the development of applicable times inevitable.
然而,根据WTO的规则和中国加入WTO时所做的承诺,现行的司法审查体制不能适应WTO规则的要求,也不能满足中国的加入世贸的承诺,所以改革中国的国际贸易行政诉讼审查范围,以适用时代的发展成为必然。
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Result] The color and elasticity of steamed breads made from 250 g flour added with 50 g cactus juice and 30 g amomum juice were bad and their surface was not smooth;when the addition amount of cactus juice was 70 g,the elastic extensibility of steamed breads was bad;when the addition amount of cactus juice was 90 g,the elasticity of steamed breads was good and their surfaces were smooth.
结果] 在250 g面粉中加入50 g仙人掌汁、30 g砂仁汁蒸制的馒头色泽、弹性不佳,表面不光滑;加入70 g仙人掌汁时馒头的弹性延伸性不好;加入90 g仙人掌汁时,馒头的弹性佳,表面光滑。
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Eight of them (Romania and Bulgaria are the exceptions) have already joined Europe's Schengen passportless travel zone.
十个国家中的八个(不包括罗马尼亚和保加利亚)已经加入了欧洲的申根协定(在加入协定的成员国之间旅游不需要护照)。
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Firstly, we performed pulpotomy for posterior teeth and pulpectomy for anterior teeth. And the experiments were divided into four groups. In the first group, nothing was put in the pulp chamber or canals. In the second group, deciduous dental pulp stem cells of mini-pig with cultured medium were transplanted into the pulp chamber and pulp canals. In the third group, deciduous dental pulp stem cells of mini-pig with lovastatin were transplanted. In the fourth group, deciduous dental pulp stem cells of mini-pig with odontoblast induction medium were transplanted.
在动物实验中,我们将迷你猪乳牙的前牙作拔髓,后牙做断髓处理,各分成四组做实验,第一组不放任何细胞、第二组加入迷你猪乳牙牙髓干细胞和培养液、第三组加入迷你猪乳牙牙髓干细胞和lovastatin,第四组加入迷你猪乳牙牙髓干细胞和odontoblast induction medium,观察三个月后,以探讨其牙齿组织是否会再生。
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When the Sentinal first gathered their forces, The Troll Warriors were considered primitive and unreliable. Their pride wounded, many refused to join, some even considering siding with the Scourge. Only a hotheaded young Warlord know as Jah'Rakal joined the Sentinal. Known as "Blinding Axe" in troll tounge, both for the blinding speed of his axes and his trademark blind techniuqe, his unstoppable rampages he already made him a legend among his Allies. However Jah'Rakal fights not for the Sentinal, or even to defend the Ancient, but to show Elves, Men, Orcs and anyone else that trolls are the best fighters in the world. dedecms.com
在近卫军团第一次集结时,那些巨魔战士们曾经是被大家认为是不开化并且很不可靠的他们的自尊心因此受到伤害,很多人拒绝加入,有些甚至考虑加入天灾军团只有一个叫做Jak'Rakal的年轻热血的巨魔战将加入了近卫军团他之所以被巨魔们称做&眩目之斧&,是因为他挥舞斧头的速度令人眩目,并且具有让敌人失明的招牌技能他那不可阻挡的狂暴力量早已在他的盟友中成为一个传说但是,Jah'Rakal不是为了近卫军团而战斗,甚至不是为了守护世界之树,而仅仅是为了向精灵,人类,兽族以及其他一切种族证明,巨魔一族才是世界上最强的战士
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The process includes the following steps: dissolving bromine in halogenated hydrocarbon, dropping the bromine solution into reactant system comprising pentabromo toluene, halogenated hydrocarbon, free radical initiator and hydrogen peroxide at 50-65 deg.c, and heating to 60-78 deg.c for reflux reaction until the reactant system becomes transparent; filtering the resultant to obtain solid product, washing with carbon tetrachloride and water separately and vacuum drying to obtain pentabromo benzyl bromide.
具体步骤为:将五溴甲苯、卤代烃、自由基引发剂和过氧化氢组成的反应体系加入到三颈瓶中,将0.07~0.1mol的溴溶于50ml卤代烃配成溶液,在50-65℃温度下滴加到反应体系中,滴加时间为50-70分钟,然后升温至60-78℃温度下回流反应,至反应体系逐渐变透明,且不再产生气泡时,将所得产物过滤,得到固体产物,分别用CCl 4 和水洗涤,真空干燥,即得到五溴苄基溴;其中,五溴甲苯与溴的摩尔比为1∶0.7-1∶1.0,溴与过氧化氢的摩尔比为1∶1.0-1∶1.4,自由基引发剂加入量为五溴甲苯重量的1-10%,卤代烃的加入量为反应体系体积的40%-100%,所用溶剂可以直接进行下一批反应,不需要更换溶剂或蒸馏提纯。
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The best conditions for deinking agent h were: pulping consistency, 10%; pulping temperature, 60 C; pulping time, 20min; no heating preservation; flotation temperature, 60 C; flotation time, 8min; flotation consistency, 0.8%; deinking agent dosage, 0.1%; deinking agent addition point, 30% in pulper and 70% in flotation cell; Na2SiO3 dosage, 3%; EDTA dosage, 0.2%; NaOH dosage, 1%; H2O2 dosage, 2%; Na2SO4 dosage, 1%.
脱墨剂h的最佳脱墨条件为:碎浆浓度,10%;碎浆温度,60℃;碎浆时间,20min;不保温;浮选温度,60℃;浮选时间,8min;浮选浓度,0.8%;脱墨剂h用量,0.2%;脱墨剂加入点,30%加入碎浆机中,70%加入浮选槽中;硅酸钠用量,2%;EDTA用量,0.2%;氢氧化钠用量,1%;过氧化氢用量,2%;硫酸钠用量,1%。
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I am direct in QQ group in the search can be exhibited, next alternative affiliation is certain QQ group, besides group advocate with the administrator, I choose right company to be given out one by one invite the QQ that joins me group, usually each enterprise won't decline many promotion company or the channel of company product, but in early days your QQ group not tall still when invited successful rate is not high also, it is very irritated that such each single shot invite, but the effect still shows gradually come out.
我是直接在QQ群里搜索会展,然后选择性的加入某些QQ群,除了群主与管理员,我选择合适的企业一个一个发出邀请加入我的QQ群,一般情况下各企业不会拒绝多一个推广企业或者企业产品的渠道,但在前期你的QQ群还不高的时候邀请的成功率也不高,这样一个个的单发邀请是很烦,但效果还是逐渐显示出来。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。