查询词典 dodecyl

The synthetic technique of anionic surfactant sodium dodecyl diphenyl ether disulfonate was studied.The best reaction conditions were determined.Alkylation was carried out with n∶ n=5∶1 at 70 ℃ for 5 h to attain 82% yield.

研究了十二烷基二苯醚二磺酸钠阴离子表面活性剂的合成工艺，得出烷基化的最佳反应条件为：催化剂用量为n∶n =5∶1；反应时间 5h ；反应温度 70℃；二苯醚的转化率 82 %。

Hydrophobically modified anion polyelectrolytes based on Fenugreek gumwere prepared by fixation of dodecyl or cetyl chains onto carboxymethyl Fenugreek gum backbone via ester functions.

将十二烷基与十六烷基以酯键方式分别引入经羧甲基化改性的香豆胶大分子骨架上，制备了基于香豆胶的疏水改性阴离子聚电解质衍生物。

The sodium dodecyl sulfate eletrophoresis pattern of proteins showed that 32Kd, 36Kd and 41Kd proteins were rich synthesized in the NaCl-tolerant cell line and the corresponding bands strengthened. Abore all, the 38Kd protein band is a specific band of the NaCl-tolerant cell line.

耐盐系和对照系可溶性蛋白质的十二烷基磺酸钠电泳图谱表明：耐盐系中32Kd，36Kd和41Kd蛋白质合成加强，并且在38Kd蛋白质处出现了所特有的带。

Under radration 500W high-pressure mercury lamp ray and catalysing by this TiO 2 sample for 5 hours, more than 91% of the chemical oxygen demand of sodium dodecyl be...

以该催化剂在 5 0 0 W紫外线高压汞灯照射下光催化氧化十二烷基苯磺酸钠 5小时，化学需氧量去除率达到 91 %以上。

In this experiment, a new method was used to purify the toxin protein produced by Verticillium dahliae. The supernatant of fungus culture was frozen and dried with Lyophilizer first, and then dialysed by Dialysis Membranes (MWCO 1000) after dissolved in distilled water. This method can eliminate the salt and sucrose in culture medium and reserve the protein component almost completely. VD-toxin were analysed using sodium dodecyl sulfate polyacrylamide gel analysis. The results indicated that the protein components were very complex, and included glycoprotein within 35.8kDa-83.2kDa. Furthermore, treatments on glycoproteins with high temperature, conA and proteinase alleviated, not abolished, their activities.NO and H_2O_2 production were assayed in two cultivars of cotton cells which were treated with VD-toxin.

本实验首先确定了用冷冻浓缩后透析的方法初步提纯棉花黄萎病菌毒素，该方法能有效去除粗提毒素中的蔗糖和盐离子并能最大程度的保留黄萎病菌分泌的蛋白成分；对毒素蛋白成分鉴定结果表明蛋白条带多，每种蛋白的含量少，小分子量蛋白含量多，糖蛋白染色结果显示，毒素蛋白中分子量在35.8kDa-83.2kDa之间的蛋白大多数为糖蛋白，分子量小于35.8kDa的蛋白多为非糖蛋白；性质鉴定结果显示，毒素中有活性的蛋白成分具有部分可耐高温高压，且毒素蛋白中的蛋白成分和糖基成分都具有致萎活性。

Furthermore, from sodium dodecyl sulfate polyacrylamide gel electrophoresis analysis results, it was found that the protein concentration difference was reduced obviously in the eluant of direct sample loading, and most high abundance proteins were identified in the eluant of NaCl.

此外，凝胶电泳的分析结果显示，在上样流出液中蛋白质的浓度差异明显变小，大量的高丰度蛋白质存在于NaCl洗脱液中。

The line 12-22 of page 6 of the above-mentioned abstract of the patent write: This composition of this patent contains one kind or many kinds of emollients such as gylciern, lanoline, aloe, liquid-state olefin, complex PRG, monostearin, compound Myrj, sodium dodecyl sulfate and so on.

上述专利摘要第6页第12——22行写道：此发明成分包括一种或多种润肤剂如甘油、羊毛脂、芦荟、液态石蜡、复合PRG、甘油单硬脂酸酯、复合Myrj、吐温、十二烷基硫酸钠等，将2种或2种以上的上述成分混合起来提高润滑效果和油质。

Objective To study the effect exerted by sodium dodecyl sulfate on the resonance light-scattering based on histone and DNA complex and to explore the orderliness of interaction in the three compounds.

目的 研究十二烷基磺酸钠对组蛋白与DNA共振光散射强度的影响，探讨三者相互作用规律。

The electric mechanism of α-cypermethrin based microemulsion formed by polyoxyethylene styrenyl phenyl ether and dodecyl benzenesulfonic salt combined with different kinds of antiparticles, and the phase behavior were investigated.

研究了结合不同反离子的十二烷基苯磺酸盐与苯乙烯苯酚聚氧乙烯醚(NR600)形成的高效氯氰菊酯微乳液的导电机理，以及反离子对体系相行为的影响。

Similar lamellar hybrids can be obtained from octa(y-chloroammoniumpropyl) polyhedral oligomeric silsesquioxanes dodecyl benzene sulfonic acid sodium salt C_(18H_(29)NaO_3S, DBSS. Further research shows that different POSS to surfactant ratios result in different arrangement of layers: when there exists excessive POSS, the layer is arranged in a "Alkyl-POSS-POSS-Alkyl" sequence; while on the contrary, the layer is in "Alkyl-POSS" sequence.

实验研究表明，通过调整POSS和表面活性剂的物质的量比例可以改变片层结构，发现当POSS成分大大过量的时候，片层重复单元按照&烷基-POSS-POSS-烷基&顺序排列，对应较大的层间距；当表面活性剂成分大大过量的时候，片层重复单元按照&烷基-POSS&顺序排列，对应较小的层间距。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷