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1·For the pairs of these compounds, the chemical shifts of protons on amide nitrogen and the UV spectra arc helpful for assigning configuration.

对于成对的化合物，酰胺氮上质子的化学位移及紫外光谱亦有助于判断构型。

2·We also improved the conventional formol-H2SO4 titrimetric method, and applied it into the determinations of the contents of amide nitrogen and total nitrogen in urea nitrate metal complexes.

我们还对传统的甲醛—硫酸法进行了改良，并将新的甲醛—硫酸法运用于硝酸尿素金属络合物中的酰氨态氮和总氮含量的测定中。

3·Of three nitrogen fertilizer types, the amide-form nitrogen source was better to the formation and accumulation of gliadin as well as its four fractions.

比较而言，酰胺态氮素更有利于醇溶蛋白及各组分的形成与积累。

4·Under the protection of nitrogen, the ricinoleic alkyl alcohol amide borate (RAB) was synthesized with castor oil, diethanolamine and boric acid as raw materials.

在氮气保护下，以蓖麻油、二乙醇胺和硼酸为基本原料，合成了蓖麻油烷醇酰胺硼酸酯(RAB)。