醚

The method is realized by that polyether ether ketone is added into concentrated sulfuric acid to carry out sulfonation reaction, thereby obtaining sulfonated polyether ether ketone, then the sulfonated polyether ether ketone is dissolved in organic solvent, N, N (1)-Carbonyldiimidazole is added to stir for one to three hours, coupling agent is mixed for stirring the reaction for 1.5 to 4 hours, then inorganic crosslinking agent is mixed to react under the temperature of 50 to 80 DEG C. Proton conductors are mixed to continue getting the mixed solution of the sulfonated polyether ether ketone or the inorganic crosslinking agent or proton conductors under the temperature. Finally the proton exchange membrane for a direct methanol fuel cell is obtained by that the mixed solution of the sulfonated polyether ether ketone or the inorganic crosslinking agent or proton conductors is/are processed through membrane forming, drying and exuviation.

该方法首先将聚醚醚酮加入浓硫酸中进行磺化反应得到磺化聚醚醚酮；然后将磺化聚醚醚酮溶于有机溶剂中，加入N，N′-羰基二咪唑搅拌1～3小时后加入偶联剂搅拌反应1.5～4小时，再加入无机交联剂在50～80℃下反应，然后加入质子导体继续在此温度下反应得到磺化聚醚醚酮/无机交联剂/质子导体的混合溶液；最后将磺化聚醚醚酮/无机交联剂/质子导体的混合物溶液成膜，干燥，脱膜即得到所述的直接甲醇燃料电池用质子交换膜。

A new viewpoint was proposed and a new rule was also proposed in determining whether crystallographic equivalence of ether and ketone linkage was tenable after taking account into the variety of aryl ring, the ratio of ketone to ether group, and the fashion of the ether and ketone linked by the aryl ring.

对聚芳醚酮晶体结构醚酮等效性提出新观点和判据，即讨论聚芳醚酮类聚合物的醚酮等效性问题必须考虑主链芳环种类，酮基与醚基比例，酮基、醚基与芳环连接方式的影响。

PECH based PUs showed higher phase separation than that of PPG base PUs owing to that the -Cl groups in PECH reduced the flexibility of molecule chain and hindered the formation of hydrogen bonds between ether groups in soft segments and -NH groups in hard segments. As a result, PECH based PUs have lower free volume content, diffusion coefficient and equilibrium adsorption of CO〓, benzene and ethanol through them than through PPG based PUs.

聚环氧氯丙烷醚聚氨酯的氯基降低了链段柔性，妨碍了软段中醚基与硬段中氨基的氢键作用，导致其相分离程度较聚环氧丙烷醚聚氨酯大，并使CO〓、苯和乙醇蒸汽在聚环氧氯丙烷醚聚氨酯中的渗透系数和扩散系数较聚环氧丙烷醚聚氨酯小，而偏离费克扩散的程度大。

Sugar water choosed degree have no significant change. It means that Iridoids composition of Valeriana jatamansi Jones has central inhibitory action.2.2 Effection of Iridoids composition of Valeriana jatamansi Jones on weight and food intake of IBS rats induced by chronic stressAnimals were randomly divided into 7 groups:normal group,model group, OSD group,FXT group and Iridoids composition of Valeriana jatamansi Jones groups in quantiy of 24.92mg/kg,12.46mg/kg,6.23mg/kg.

蜘蛛香环烯醚萜可以减缓正常小鼠的胃肠运动和利血平化小鼠的胃肠功能亢进，降低慢性应激所致IBS模型大鼠的内脏敏感性，显著减少了IBS模型大鼠的排便数量，从而改善腹泻型IBS的临床症状。2蜘蛛香环烯醚萜对神经系统功能的影响目的：探讨蜘蛛香环烯醚萜对精神活动的影响2.1蜘蛛香环烯醚萜对慢性应激所致IBS大鼠精神活动的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

It means that Iridoids composition of Valeriana jatamansi Jones has central inhibitory action.2.2 Effection of Iridoids composition of Valeriana jatamansi Jones on weight and food intake of IBS rats induced by chronic stressAnimals were randomly divided into 7 groups:normal group,model group, OSD group,FXT group and Iridoids composition of Valeriana jatamansi Jones groups in quantiy of 24.92mg/kg,12.46mg/kg,6.23mg/kg.

蜘蛛香环烯醚萜可以减缓正常小鼠的胃肠运动和利血平化小鼠的胃肠功能亢进，降低慢性应激所致IBS模型大鼠的内脏敏感性，显著减少了IBS模型大鼠的排便数量，从而改善腹泻型IBS的临床症状。2蜘蛛香环烯醚萜对神经系统功能的影响目的：探讨蜘蛛香环烯醚萜对精神活动的影响2.1蜘蛛香环烯醚萜对慢性应激所致IBS大鼠精神活动的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

Based on this,We designed a series of experiments to study the treatment and its mechanism of Iridoids composition of Valeriana jatamansi Jones of the IBS animal model.1 Research on Iridoids composition of Valeriana jatamansi Jones in the role of gastrointestinal function.1.1 Effection of Iridoids composition of Valeriana jatamansi Jones on gastrointestinal function of normal miceMethods:Compared with normal group and YJBH group,mice which has given Iridoids composition of Valeriana jatamansi Jones as 71.2mg/kg,35.6mg/kg,17.8mg/kg,8.9mg/kg was detected gastric emptying and small intestinal propulsion after 4 days drug given.Results:Compared with normal group,gastric emptying and small intestinal propulsion in 35.6mg/kg and 17.8mg/kg group was inhibited.

课题通过观察蜘蛛香环烯醚萜对正常及IBS模型动物的胃肠道功能、精神活动的影响，以及蜘蛛香环烯醚萜干预下IBS大鼠结肠、血清、中枢5-HT含量，结肠5-HTR3A受体的mRNA和色氨酸羟化酶(TPH1)的mRNA表达，结肠和血浆中SP和VIP含量以及结肠中肥大细胞分布，探讨蜘蛛香环烯醚萜对腹泻型IBS的治疗作用及其作用机理，为临床治疗IBS提供实验依据。1蜘蛛香环烯醚萜对胃肠功能的作用目的：探讨蜘蛛香环烯醚萜对胃肠功能的影响1.1蜘蛛香环烯醚萜对正常小鼠胃肠功能的作用方法：正常小鼠灌胃给予蜘蛛香环烯醚萜71.2mg/kg、35.6mg/kg、17.8mg/kg、8.9mg/kg与空白组和越鞠保和丸组对照，给药4日后测定动物的胃排空率和小肠推进率。

Research on the Iridoids composition of Valeriana jatamansi Jones in the role of mechanism of action of rat model induced by chronic stress3.1 Effection of Iridoids composition of Valeriana jatamansi Jones on 5-HT and 5-HIAA in colon,serum and central of IBS rats induced by chronic stressMethods:Animals were randomly divided into7 groups:normal group,model group, OSD group,FXT group and Iridoids composition of Valeriana jatamansi Jones groups in quantiy of 24.92mg/kg,12.46mg/kg,6.23mg/kg.

同时，蜘蛛香环烯醚萜可显著降低醋酸所致小鼠的扭体次数，说明其有良好的镇痛作用。3蜘蛛香环烯醚萜治疗肠易激综合征机理3.1蜘蛛香环烯醚萜对5-HT神经递质的影响3.1.1蜘蛛香环烯醚萜对外周和中枢5-HT含量的影响目的：探讨蜘蛛香环烯醚萜对慢性应激所致IBS大鼠结肠、血清和脑中5HT、5-HIAA的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

Research on the Iridoids composition of Valeriana jatamansi Jones in the role of mechanism of action of rat model induced by chronic stress3.1 Effection of Iridoids composition of Valeriana jatamansi Jones on 5-HT and 5-HIAA in colon,serum and central of IBS rats induced by chronic stressMethods:Animals were randomly divided into7 groups:normal group,model group, OSD group,FXT group and Iridoids composition of Valeriana jatamansi Jones groups in quantiy of 24.92mg/kg,12.46mg/kg,6.23mg/kg.

同时，蜘蛛香环烯醚萜可显著降低醋酸所致小鼠的扭体次数，说明其有良好的镇痛作用。3蜘蛛香环烯醚萜治疗肠易激综合征机理3.1蜘蛛香环烯醚萜对5-HT神经递质的影响3.1.1蜘蛛香环(来源：5bABd5C论文网www.abclunwen.com)烯醚萜对外周和中枢5-HT含量的影响目的：探讨蜘蛛香环烯醚萜对慢性应激所致IBS大鼠结肠、血清和脑中5HT、5-HIAA的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组，除对照组外，其余各组进行慢性应激实验。

It may means that Iridoids composition of Valeriana jatamansi Jones doesn\'t regulate the TPH1 transcription expression.3.4 Effection of Iridoids composition of Valeriana jatamansi Jones on SP and VIP of IBS rats induced by chronic stressMethods:Animals were randomly divided into7 groups:normal group,model group, OSD group,FXT group and Iridoids composition of Valeriana jatamansi Jones groups in quantiy of 24.92mg/kg,12.46mg/kg,6.23mg/kg.

造模后，中枢5-HT呈现降低趋势，这可能是导致动物出现活动能力下降和兴趣缺失的原因之一，蜘蛛香环烯醚萜可以增加下丘脑、海马和杏仁核中5-HT含量，推断蜘蛛香环烯醚萜可通过干预中枢的5-HT通路来改善IBS精神症状。3.2蜘蛛香环烯醚萜对胃肠激素的影响目的：探讨蜘蛛香环烯醚萜对慢性应激所致IBS大鼠SP和VIP的影响方法：动物随机分为对照组、模型组、昂丹司琼组、氟西汀组、蜘蛛香环烯醚萜24.92mg/kg、12.46mg/kg、6.23mg/kg组。

The preparation of avermyctin emulsions in water was achieved by mixing the surfactants polyoxyethylene (10) octylphenyl ether (OP10), polyoxyethylene styrenated phenol ether (602), and polyoxyethylene (40) castor oil ether (EL-40) with polyoxyethylene (20) castor oil ether (EL-20), separatively. Emulsion stability was investigated by analyzing the hydrophile-lipophile balance, critical micelle concentration, and surface tension. Then, the surfactants of polyoxyethylene polyoxypropylene styrenated phenol ether (1601), block copolymer (L64), and octyl phenyl polyoxyethylene phosphonate were added to the emulsion made by blending EL-40 and EL-20, separatively. The stability of the emulsions was investigated further and discussed in terms of droplet size, surface tension, and zeta potential.

首先将辛基酚聚氧乙烯醚(OP10)、苯乙烯基酚聚氧乙烯醚(602)和蓖麻油聚氧乙烯(40)醚(EL-40)分别与蓖麻油聚氧乙烯(20)醚(EL-20)复配制备阿维菌素水乳剂，从亲水亲油平衡值、临界胶束浓度、表面张力等方面分析了二元表面活性剂复配对乳液稳定性的影响；其次，在EL-40与EL-20复配基础上，将苯乙烯基酚聚氧乙烯聚氧丙烯醚(1601)，嵌段共聚物(L64)和辛基酚聚氧乙烯醚磷酸酯分别添加到乳液中，从粒径、表面张力和zeta电势等方面考察三元表面活性剂复配对乳液稳定性的影响。

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。