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He various economy reality of the socialist market economy , the equal market competition of economic bodys ,the market rules of fair exchange ,all of these request us to introspect the traditional theories and its mode: whether the personal benefits should exist under socialist market economy condition , how to deal with the relations between the personal interests and society ,state interestsrelationships,and how to deal with the facty polarization phenomenon nowaday,and how to make the society develop harmoniously and roundly.

面对社会主义市场经济下的种种经济现实，各个市场主体在市场竞争中的平等竞争，公平交易等市场规则，客观上要求我们对于传统理论及其模式的反思：那就是在社会主义市场经济条件下到底要不要个人利益，个人利益与社会、国家利益之间的关系到底应该怎么处理，以及面对当前已经出现的事实上的两级分化现象应该怎么对待和处理，怎么样才能做到社会和谐和全面发展。

Formylation and diformylation of dithieno [2,3-b:3',2'-d] thiophene were prepared by two methods. Firstly, aromatic carbanions were prepared by 1 Br/Li exchange of bromo dithieno[2,3-b:3',2'-d]thiophene with n-BuLi in THF at low temperature; 2 deprotonation of dithieno[2,3-b:3',2'-d]thiophene with LDA.

二噻吩并[2，3-b：3'，2'-d]噻吩单醛与双醛的制备首先通过两种方法产生芳基负离子：1溴代并三噻吩在四氢呋喃中与正丁基锂发生的溴锂交换；2用LDA对二噻吩并[2，3-b：3'，2'-d]噻吩去质子化作用。

Hyperbranched aliphatic polyethers with narrow molecular weight distribution have been prepared via anionic polymerization of glycidol with rapid cation-exchange equilibrium.

根据~(13)C-NMR谱图的积分结果，计算得到HPG的支化度为0.54，GPC测得的数均分子量为3265，分散度为1.48。

In this process, the electrolylic bath with cationic exchange membrance and leas electrode is used. The cathode liquor is oxalic acid, the anode liquor is diluted sulfuric acid. The process above has following advantages with high yield, top quality, lower cost, no "three wastes" pollution, and no oxalic aldehyde in the product. It is a cleaner and environment-friend technology, and is a development trend for production of glyoxalic acid. Complete analytical process for raw materials, intermediate and final products were established.

本论文通过对乙醛酸合成路线的研究，确定了草酸电解法制乙醛酸的工艺路线，此法采用装有阳离子交换隔膜和铅电极的电解槽，阴极电解液为草酸溶液，阳极电解液为稀硫酸，该工艺具有产品收率高、质量好、成本低、无三废污染、产品中无乙二醛等特点，是一条清洁、绿色工艺，是生产乙醛酸的主要发展方向。

After extraction by ethanol and purification by cationic ion-exchange column, a method of using reversed-phase high-performance liquid chromatography and precolumn derivatization with o-phthalaldehyde and 9-fiuorenylmethylchloroformate is employed for determination of free amino acids in tobacco . This method assures that amino acids with amino and imino groups can be determined simultaneously. The results of duplication experiment and recovery experiment are acceptable.

本试验用乙醇提取烟叶中的游离氨基酸，并用阳离子交换树脂纯化，再用邻苯二甲醛、氯甲酸芴甲酯联合柱前衍生、反相高效液相色谱分析测定了烟叶中的游离氨基酸，该方法能同时测定烟叶中的带氨基和亚氨基基团的氨基酸，并且分析方法的重现性和回收率均令人满意。

Methods The samples of hygienic protection beaded paint were chosen to conduct the soak experiment, incontinuous soak of 4 times for 96 hours(exchange the soaking aqua every 24 hours), continuous soak of 4 times for 96 hours were conducted respectively, and then compared these experimental results with that which was obtained with the standard soak method30 d,6 ti...

根据涉及生活饮用水卫生安全产品标准修订和制定协作会议精神，笔者对与饮用水接触的卫生防护涂料的浸泡实验的样品浸泡方法进行了实验研究。1材料与方法1.1原理根据与

Hold interclub meetings with visiting and returning Group Study Exchange teams to allow team members to share the value of their GSE experiences with other Rotarians.

邀请来访的与返乡的团体研究交换团员一起举办社间会议，让团员们与其他的扶轮社员分享他们在团体研究交换所得到的宝贵经验。

Hold interclub meetings with visiting and returning Group Study Exchange teams to allow team members to share the value of their GSE experiences with other Rotarians.

为出访及返国的团体研究交换团举办社间会议，让团员们与其他的扶轮社员分享宝贵的团体研究交换经验。

The French sociologist and cultural theorist Jean Baudrillard points out in his book "Symbolic Exchange and Death" the traits of contemporary culture as manifested by the vogue images:"All fashion advertisements are a painted love territory of narcissi: You are responsible for your own body. You should explore it. You should invest in it, not in accordance with the pleasure you derive from it but with the signal of popular demand. Invest according to some kind of procedural charm diagram/chart."

法国社会学家与文化学家波德里亚在《象征交换与死亡》一书里指出这类时尚图像的当代文化特征：&全部时尚广告就是绘制了这样一张自我色情的爱情地图：你们负责自己的身体，你们应该开发它，你们应该向它投资--不是根据享乐的命令投资，而是根据大众模式反映的符号命令投资，根据某种魅力流程图投资。&

However, in the simulation, we found that the equilibrium between growing radicals and nitroxyl radicals was a CPU-intensive and time-consuming process, therefore, a hybrid algorithm with an analytical expression for the exchange equilibrium and with a biased sampling technique for those elementary reactions of small probabilities was used to improve the stochastic algorithm.

并发现，链自由基与氮氧游离基之间的偶合-解离平衡消耗大量的运算时间，为此用偏倚抽样法和杂化运算对模拟进行了改进，得到了与原始方法基本一致的结果，从而大大缩短了运算时间。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。