英文化学小论文题目

有机化学英语论文Abstract In this work the effects of the microporosity and chemical surfaceof polymeric adsorbents on adsorptive properties of phenol wereinvestigated. Textural parameters of four kinds of polymeric resins namely AB-8 D4006 NKA-II and D16 resin were separately measuredby ASAP 2010. The surface chemistry of these polymeric resins was determined by means of inverse gaschromatography (IGC) and diffusereflectance infrared Fourier transform spectroscopy (DRIFTS). Static equilibrium adsorption experiments were carried out to obtain theisotherms of phenol on the polymeric resins. It was shown that NKA-II and AB-8 resin possessed relatively high BET surface areas andmicropore volumes while D4006 and D16 resin possessed comparatively low BET surface areas and micropore volumes. The results of IGCexperiments revealed that NKA-II resin had extraordinary high specific component of the free energy of adsorption both for polar acetone andbenzene probe and thus extraordinary strong surface polarity compared to the other polymeric resins. It was also found that the isotherm ofphenol on NKA-II was much higher than that on the other polymeric resins due to its strongest surface polarity and largest micropore volumeamong four kinds of resins. These experimental observations indicated that adsorption of phenol on the polymeric resins depended greatly ontheir microporosity and surface chemistry. The well-developed microporosity and the strong surface polarity would improve the adsorptionof phenol on the polymeric resins. 2004 Elsevier . All rights reserved. Keywords: Polymeric resin; Phenol; Porosity; Surface chemistry; Inverse gas chromatography

稀土元素与一些高科技联系,顺便说一句高三就要论文拉吗,稀土元素也没必要学呀

1、试论《失乐园》中Satan的形象OntheImageofSataninParadiseLost

《失乐园》是日本小说家渡边淳一创作的一部长篇小说，讲述了一对中年男女因婚外恋而双双殉情的故事。女主人公松原凛子是医学教授之妻，男主人公久木祥一郎是出版社的主编。

2、Fielding小说的现实主义意义TheRealisticSignificanceofHenryFielding’sFiction

菲尔丁（Fielding）是英国现实主义小说家，1707年4月22日生于萨默塞特郡格拉斯顿伯里的一个贵族家庭。早期的创作活动以编剧为主，先后写有二十五部喜剧、笑剧和小歌剧，讽刺社会政治的黑暗。后期致力写作长篇小说

3、《傲慢与偏见》中经济对婚姻的影响TheEconomicInfluenceonMarriageinPrideandPrejudice

《傲慢与偏见》是根据简·奥斯汀同名小说改编，由焦点电影公司发行的一部爱情片，由乔·怀特执导，凯拉·奈特利、马修·麦克费登、唐纳德·萨瑟兰等联合主演。该片于2005年9月16日在英国上映。该片讲述了19世纪初期英国的乡绅之女伊丽莎白·班内特五姐妹的爱情与择偶的故事。

4、桑提亚哥——海明威笔下的硬汉Santiago:AtypicalHemingway’sHero

《老人与海》中的主人公老汉桑提亚哥更是集中体现了海明威心中的硬汉形象，从而成为海明威作品中众多硬汉形象最突出而独特的代表。桑提亚哥的名言“人可以被毁灭，但不能被打败”，即是这种“硬汉”形象的精神境界。

5、论RobertFrost的诗歌创作OnRobertFrost’sPoetry

《火与冰》是一首诗歌，作者罗伯特·弗罗斯特（Robert ·Frost ）(1874—1963)，美国诗人。生于加利福尼亚州。父亲在他11岁时去世。母亲把他带到祖籍新英格兰地区的马萨诸塞州。中学毕业后，在哈佛大学学习两年。这前后曾做过纺织工人、教员，经营过农场，并开始写诗。他徒步漫游过许多地方，被认为是“新英格兰的农民诗人”。

1，选择自己感兴趣的题目非常有必要的，因为毕业论文也不算是一个小工程，要是都不是自己感兴趣的，那么在这么长的写作时间里，想必是会很痛苦的。

2，题目过大也不能过小，毕竟是本科论文，专业的内容还是要有的，尽量选择自己能力范围内的，最好是那种可以小角度看大问题的题目。比如要写断背山这部电影，一定要从电影中体现中美文化差异，其中分别有婚姻观，家庭教育观等等。但是如果以一部电影为出发点，其实角度就比较小了。如果是以中西方文化差异这个题目由太大，只从断背山这部电影的角度出发，内容范围就缩小很多。

3，选题一定要选择资料丰富的，本科论文相对研究生论文，要求的写作水平还是没有这么高的，毕竟相对知识水平也是有限的，几千字的论文比平常写的几百字的作文难度还是要大一些的，可也没有想象中那么容易的。所以最好是找参考资料较多的题目，可以多多参考下。

题目：合成和溶液性质高分子两性离子铵betains 摘要：季铵盐， N ， N -二烯丙基氮carboethoxymethyl氮methylammonium氯化物（ 8 ） ，已合成了良好的收益。单体8对聚合反应在水溶液中以过硫酸铵为引发给予聚电解质10 。该聚电解质10对酸性水解了两性聚电解质11日在良好的收益。该解决方案这些性能的聚合物了详细的讨论。该两性聚电解质11显示， “ antipolyelectrolyte ”的行为。 ; 共聚物12季铵盐， N ， N -二烯丙基氮carboethoxymethyl氮methylammonium chlolide （ 8 ）和二氧化硫已合成了良好的收益。该聚电解质12对酸性水解了两性聚电解质13容易在良好的收益。该解决方案性能的这些聚合物中详细讨论。该两性聚电解质13日被裁定为不溶于水，但容易溶解在在场的低分子量的共同盐。该两性聚电解质显示“ antipolyelectrolyte ”的行为;粘度的两性聚电解质增加，增加离子强度，其水溶液的解决办法。

imaginable. We seldom think of it. The days stretch out in an endless vista. So we

稀土的分布与前景。英语不好就有道或者谷歌吧

自己能用英文得心应手的写的，最好写。俗称适合自己的，

原文：. 9-[2-(3-Carboxy-9,10-diphenyl)anthryl]-6-hydroxy-3H-xanthen-3-ones (DPAXs) The most widely used 1O2 trap is 9,10-diphenylanthracene (DPA), which reacts rapidly and specifically with 1O2 to form a thermostable endoperoxide at a rate of k = M1 s1. The decrease in absorbance at 355 nm is used as a measure of the formation of the endoperoxide. However, DPA derivatives are not very sensitive probes because the detection is based on the measurement of absorbance [79]. Umezaka et al. [79] fused DPA with a fluorophore (fluorescein) aiming to associate the first’s reactive characteristics with the second’s fluorescent characteristics. Fluorescein was chosen as fluorophore since it has a high fluorescence quantum yield in aqueous solution and is able to be excited at long wavelength. From this fusion resulted 9-[2-(3-carboxy-9,10-diphenyl)anthryl]-6- hydroxy-3H-xanthen-3-ones (DPAXs) (Fig. 11) [79]. Thus, DPAXs were the first chemical traps for 1O2 that permitted fluorescence detection. They react with 1O2 to produce DPAX endoperoxides (DPAX-EPs) (Fig. 11). DPAXs themselves scarcely fluoresce, while DPAXEPs are strongly fluorescent. The mechanism accounting for the diminution of fluorescence in DPAXs and its enhancement in DPAX-EPs remain unclear [79]. The fluorescence intensity of fluorescein derivatives is known to be decreased under acidic conditions as a consequence of the protonation of the phenoxide oxygen atom. In order to stabilize the fluorescence intensity at physiological pH, electron-withdrawing groups wereincorporated at the 2- and 7-positions of the xanthene chromophore, leading to Cl (DPAX-2) and F (DPAX-3) (Fig. 11). This modification lowered the pKa value of the phenolic oxygen atom [79]. DPAX-2 was used to detect the production of 1O2 from two different generation systems: the MoO4 2/H2O2 system and the 3-(4-methyl-1-naphthy)propionic acid endoperoxide (EP-1) system, which act at different pH values ( and , respectively). In both cases an increase of the probe’s fluorescence was verified when in contact with the generating system. These results confirmed DPAXs’ advantage when detecting 1O2 in neutral or basic aqueous solutions [79]. The behaviour of this probe towards H2O2, !NO and O2 ! was also studied, but no change in the intensity of the fluorescence was observed for any of these reactive species. These facts corroborate the specificity of this probe for 1O2 [79]. The detection of 1O2 in biological samples was also investigated. With this purpose, DPAX-2 diacetate (DPAX-2-DA) was prepared, since it was considered to be more permeable to cells. DPAX-2-DA is hydrolysed by intracellular esterases to generate DPAX-2. Both DPAX-2 and DPAX-2DA were tested and compared in the same assay systems. However, cells were stained similarly in both cases. This observation probably means that DPAX-2 itself is also membranepermeable [79].译文：420. 91-[2-(3-羧基-9,10-二苯)anthryl]-6 羟基3h-xanthen-3-酮 (dpaxs)使用最广泛的1o2阱9,10-diphenylanthracene(政治部) 而迅速的反应,特别是与1o2形成耐热endoperoxide的增长率为k=米1秒1. 减少,为355nm,是用来衡量形成的过氧化物. 不过,政治部衍生不是很敏感的探针,因为检测是基于测量吸光度[79]. umezakaetal. [79]fused审批与fluorophore(fluorescein)以准第一功的特点与第二的荧光特性. fluorescein被选为fluorophore,因为它具有较高的荧光量子产率在水溶液中,并能 兴奋长波长. 由此导致的融合 91-[2-(3-羧基-9,10-二苯)anthryl]-6 - 羟基3h-xanthen-3酮(dpaxs)(图11)[79]. 因此,dpaxs被化学第一陷阱1o2允许荧光检测. 他们的反应与1o2出示dpaxendoperoxides(dpax-eps)(图11). dpaxs自己scarcelyfluoresce,而dpaxeps强烈的荧光. 机制的会计核算窄化荧光dpaxs及其增强dpax-办事仍不清楚[79]. 荧光强度的荧光素衍生物已知是减少酸性条件下,随着大量的质子 该phenoxide氧原子. 为了稳定的荧光强度,在生理pH, 电子撤组wereincorporated在2-和7点位置的xanthene生色 通往cl(dpax-2)和F(dpax-3)(图11). 这个修改降低pKa值的酚氧原子〔79〕. dpax-2检测生产1o2从两个不同的发电系统: 该moo42/过氧化氢体系和3-(4-甲基-1-萘基)丙酸endoperoxide(ep-1)系统, 该法在不同pH值(和美元). 在这两种情况下,提高了探头的荧光验证时接触的发电系统. 这些调查结果证实dpaxs的优势,在检测1o2在中性或碱性溶液[79]. 该行为此探针对双氧水,! NO和O2! 还研究, 但不改变强度的荧光染色任何这些活性物种. 这些事实证实特异性这种探针1o2[79]. 检测1o2生物样品中为. 为了这个目的,dpax-2diacetate(dpax-2-da)制成的,因为它被认为是更容易接受细胞. dpax-2-daishydrolysedbyintracellularesterases产生dpax-2. 双方dpax-2dpax-2da试验,比较在同一实验系统. 但是,细胞染色同样,在这两种情况. 这个观察可能意味着dpax-2本身也是membranepermeable[79].