脲

The experimental results showed that when AcO-or other anion s were added to a solution consisting of 1,5-(di-benzaldehyde) dithiocarbohydrazone and Hg2+(at a ratio of 1∶2),a hypsochromic shift took place on the maximum ultraviolet absorption peak of the ligand.

设计合成了配体1，5-二双缩二氨基硫脲及其金属配合物，探讨了不同金属阳离子对1，5-二双缩二氨基硫脲紫外吸收光谱的影响，并将标题化合物应用于阴离子识别。

The influence of chain extension coefficient on properties of PUU elastomer s modified by isocyanurate was studied.

考察了扩链系数对异氰脲酸酯改性的聚氨酯脲弹性体性能的影响，通过改变扩链系数探讨PUU的力学性能和耐溶剂性能的变化规律。

Isocyanurate was qualitatively identified by infra-red absorption spectroscopy analysis, the quantity of isocyanurate was calculated according to mass fraction of NCO measured by di-n-butylamine method, the thermal stability of prepared elastomers was characterized by thermogravimetric analysis.

用红外光谱法证实了产物中异氰脲酸酯的存在，根据用二正丁胺法测得的NCO基团的质量分数可计算出异氰脲酸酯的质量分数，用热重法分析了产物的热稳定性。

Tri (2-hydroxyethyl) isocyanurate was used as the curing agent to synthesize the polyurethane elastomer modified by isocyanurate.

以三（2-羟乙基）异氰脲酸酯为固化剂，用异氰脲酸酯环合成改性聚氨酯弹性体。

Isocyanurate based on TDI was synthesized and the heat-resistance property of casting polyurethane elastomer which synthesized using isocyanurate based on TDI and PEPA was obviously enhanced compared to polyurethane elastomer which did not introduce the isocyanurate by the TGA under the different temperature and the mechanics performance maintenance rate at high temperature.

在催化剂作用下，合成了TDI-100型异氰脲酸酯，并与己二酸乙二醇丙二醇酯合成了浇注型聚氨酯弹性体，通过不同温度下的热失重分析和弹性体的力学性能高温保持率对比分析表明，在TDI型聚氨酯弹性体中引入异氰脲酸酯基团，可明显提高弹性体的耐热性能。

HBPSi to join after, HBPSi of epoxy groups can triazine ring into isocyanuric acid ester, isocyanuric acid ester and then with epoxy to form one oxazoline (see signal-1a), To reduce the stiffness of the resin network.

加入HBPSi后，HBPSi的环氧基团可使三嗪环转化为异氰脲酸酯，异氰脲酸酯进而与环氧基反应生成噁唑啉酮（oxazolidinone rings(见示意式1a)，降低了树脂网络的刚性。

It indicates that the raw materials can be stored in temperature of 0-4℃ for 60 days, they must be immersed in clean water for more than one hour before processing, and peeling be carried out in flowing water; that color preserving solution should be 1.0% NaCl+0.2% citric acid+0.5% Vitamin C+110ppm dichloro isocyanuric acid sodium; that combined browning inhibiting solution is conspicuously effective, and immersion time better be around 20 minutes; that sterilization solution ought to be 200ppm dichloro isocyanuric acid sodium+0.5% ascorbic acid+0.3 citric acid, and 10 minutes' immersion will achieve the effect of sterilization and inhibiting browning; and that after 20-21 minutes of quick-freezing in temperature of -31℃~-32℃, the products can be preserved under -18℃ for a whole year.

通过对速冻牛蒡加工过程中原料储存、削皮方法、护色、浸泡时间、无热杀菌、包装形式等参数进行研究表明：原料0-4℃可储存60天，加工前用清水浸泡1小时以上，削皮时在流水中进行，护色液筛选的1.0% NaCl＋0.2%柠檬酸＋0.5%维生素C十110ppm二氯异氰脲酸钠；复合褐变抑制溶液在抑制褐变方面有显著的效果，浸泡处理时间为20分钟为宜；杀菌液为200ppm二氯异氰脲酸钠＋0.5%抗坏血酸＋0.3柠檬酸，浸泡10分钟即可达到灭菌和抑制褐变的作用；经-31℃~-32℃温度下速冻20~21分钟，产品在-18℃条件下可储存一年。

The result shows that the solvent dispersing method has an advantage over micronization method for dissolution uniformity of glibenclamide.

结果与结论溶剂分散法制备的胶囊中格列本脲溶出均一性优于将格列苯脲微粉化制得的胶囊。

Based on synthesis of six naphthyl substituted urea and thiourea open-chained compounds, the interaction of these compounds as host molecules with several anionic guests in molecular level were studied via absorption, fluorescence and 〓HNMR spectra.

二、在设计合成六种萘取代的脲及硫脲类多足开链化合物的基础上，利用吸收光谱、荧光光谱及〓H NMR波谱手段详细研究了该类化合物作为主体分子与不同种类阴离子客体分子间的相互作用。

Collisional induced dissociation technique is applied to characterize cucurbituril supramolecule structures complexed with 1,4-diaminobutane, phenylenediamine and lysine.

运用碰撞激发解析技术确定了葫芦脲[6]与1，4-丁二胺，二甲基苯以及赖氨酸分子形成轮轴结构的超分子复合物，即线性分子穿入葫芦脲[6]的空腔内形成的稳定超分子复合物。

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