查询词典 formaldehyde solution

Catalytic synthesis of ketal by urushiol-formaldehyde neodymium polymer from cyclohexanone and ethanediol was studied.

以环己酮和乙二醇为原料，漆酚缩甲醛钕聚合物为催化剂合成了环己酮乙二醇缩酮。

But, heat transfer fluids can also be used for cooling strongly exothermal processes, such as occur in the synthesis of ethylene oxide, aniline or formaldehyde.

同时，该导热油也能给需要冷却的工艺路线迅速导出热量，例如应用于EO/苯胺/甲醛等的合成。

The results show that this reaction proceeds in two step: 1 silylene and formaldehyde form an intermediate complex, which is a kind of exothermal reaction with no barrier; 2 the intermediate complex isomerizes to sive the product. The barrier for the second step is 51.4kJ·mol^-^1 at MP2/6-31G^*//6-31G^* level (with zero-point energies correction). In view of dynamics and thermodynamics, it is between 300～400K that the reaction will have not only larger spontaneous tendency and equilibrium constant but also quicker reaction rate.

结果表明，此反应历程由两步组成：1硅烯与甲醛生成一中间配合物，是一无势垒的放热反应，2中间配合物异构化为产物，此步势垒经零点能校正后只有51.4kJ·mol^-^1(MP2/6-31G^*//6-31G^*)；从热力学和动力学的综合角度考虑，该反应在300～400K温度下进行为宜，如此，反应既有较大的自发趋势和平衡常数，又具有较快的反应速率。

Result The length and width of two varieties of Vicia faba stomata were reduced with the increase of formaldehyde concentrations.

结果］2种蚕豆幼苗叶片气孔的长度和宽度均随甲醛浓度的增加和处理时间的延长而变小。

Airtight reaction chamber method was used to investigate the effects of formaldehyde pollution on Vicia faba stomata reaction.

方法］采用密闭反应仓法研究蚕豆叶片气孔对不同浓度甲醛污染处理的响应。

Common Vicia faba stomata was more sensitive to formaldehyde than that of Songzi green Vicia faba.

结论］普通蚕豆叶片气孔对甲醛污染的反应比松滋青皮蚕豆叶片气孔的反应更敏感。

Objective To study the influence of formaldehyde sulphoxylate on the expression of glial fibrillar acidic protein in mice hippocampus.

目的研究次硫酸氢钠甲醛对小鼠海马神经胶质酸性蛋白表达的影响。

Objective To study the influence of formaldehyde sulphoxylate on the expression of glial fibrillar acidic protein in mice hippocampus.

目的 研究次硫酸氢钠甲醛对小鼠海马神经胶质酸性蛋白表达的影响。

In addition, the methanol contained in aspartame breaks down into formic acid and formaldehyde.

此外，甲醇所载阿斯巴甜破裂成甲酸和甲醛。

The preparation of glycoluril and the optimum process conditions are studied lthe effects of different etherates on the content of free formaldehyde in the resulting finishing agents are also compared.

对甘脲树脂的制备及最佳工艺条件进行了研究，比较了各种不同醚化剂对整理剂产品中游离甲醛含量的影响。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼