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Off-line HPLC coupled with MS gives the result that 4-chlorophenyl urea and 2-chloro-N-(4-chlorophenyl) benzamide are two photoproducts. In comparison with their retention times and UV specta with those of standards, some other photoproducts identified are 2-chloro benzamide, 4-chlorophenyl urea and 4-chloro aniline.

收集光解产物各级分,采用直接进样法在MS上测得其中的二种光解产物为对氯苯基脲和N-邻氯苯甲酰胺:通过与标样在同样HPLC条件下的保留时间和UV吸收光谱相对照,证明产物中存在有邻氯苯甲酰胺、对氯苯基脲和对氯苯胺等。

This method was applied to determine aromatic amines in textiles with recovery of 95%~98% for o-toluidine and 78%~85% for benzidine.

将本方法用于测定纺织品中的芳香胺化合物,邻甲苯胺和联苯胺的回收率分别为95%~98%和78%~85%。

Benzoperoxide/N,N-dimethylaniline initiator system that can eliminate the danger of using MEKPO/Co salt system used in UPR at room temperature was studied in this paper.

采用过氧化苯甲酰/N,N-二甲基苯胺固化体系室温条件下对不饱和聚酯树脂进行固化,可以降低常用的过氧化酮/钴盐体系的危险性。

It is manufactured through kneading, cold pressing and post-treatment; and the materials for the synthetic brake shoe include butadiene-acrylonitrile rubber, phenolic resin, graphite, iron powder, barium sulfate, potash feldspar powder, composite fiber, sulfur, hexamethine tertramine, polymethylene aniline, 2-mercaptan benzothiazole, zinc oxide and toluene.

同时本发明的提供了采用捏合、冷压、后处理工艺来制造新型高摩擦系数合成闸瓦。组成新型高摩擦系数合成闸瓦的各组分重量百分比如下:丁腈橡胶为6.20%,酚醛树脂为10.00%,石墨为15.00%,铁粉为11.03%,硫酸钡为30.00%,钾长石粉为5.00%,复合纤维为20.20%,硫磺为1.00%,六次甲基四胺为1.00%,聚亚甲基聚苯胺0.12%,2-硫醇基苯并噻唑0.15%,氧化锌0.30%,甲苯8.0%。

The best operational parameters were that the reaction temperature was 105℃, the reaction time was 3 hours, the mixture ratio of n: n=1:2.79, using N,N-dimethyl benzylamine as catalyst, and 2,6-Di-tert-buthyl-p-cresol as inhibitor.

结果表明,合成TGICA的最优化条件为:n/n=l:2.79;催化剂为N,N-二甲基苯胺;阻聚剂为2,6-二叔丁基对甲酚;反应温度(105±2)℃;反应时间3h。丙烯酸的转化率可达到99.7%。

Poly{[2-(4-biphenylamino)phenyl]phenylenevinylene} was prep-ared with 4-nitroanline which was coupled with p-xylene,throughreduction、idionization、Ullmann reaction、bromization、condensepolymerizationto get the final product.

本文提出了两条合成聚(2-芳基苯撑乙烯)的新路线,即聚{ 2-[4-苯基]苯撑乙烯}是以对硝基苯胺为原料,其与对二甲苯经改良的Gomberg-Bachmann反应偶联、再通过还原、碘化、Ullmann反应、溴化、缩聚反应得到。

ThiS has led to the development of more stable,conjUgated polymers,e.g.polypyrrol,polyaniline and polytiophene.

这导致了导电性能更稳定的共轭聚合物,如polypyrrol ,聚苯胺和polytiophene的发展。

Using o-nitrotoluene as an oxidant,the improved preparation of 7-chloroquinldine was studied by classical Skraup reaction of m-chloroaniline and crotonaldehyde.

研究了以邻硝基甲苯为氧化剂,间氯苯胺和巴豆醛通过经典的Skraup反应制备7-氯喹哪啶的改进方法。

The results showed that chloroanilines brought to effect on physiological function and caused oxidative stress in crucian carp.

结果显示了氯代苯胺对鲫鱼体内生理生化作用的影响以及对机体的氧化损伤。

Leuco crystal violet lactone was prepared by heating the mixture of dimethylaniline, p- dimethylaminobenzaldehyde and m- dimethylaminobenzoic acid at 60 ℃ for 5 hours in presence of hydrochioric acid and unea and in the nitrogen atmosphere with 72% yield of LCVL.

等摩尔比的N,N-二甲基苯胺和对二甲氨基苯甲醛在盐酸和脲的存在及氮气保护下,80℃反应0.5h,加入间二甲氨基苯甲酸于90℃反应5h。将反应混合物中和,抽滤,得到无色结晶紫内酯,产率为72%。

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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。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。