酰化

Originally limited to dialkylamino methylenation, the application of Mannich reaction has been expanded much further in recent years to a wide variety of monosubstituted amines, amine equivalents and amides. In addition, a variety of Aza-Mannich and Mannich-Michael methodologies have emerged.

最初该反应的应用范围仅局限于二烷基胺亚甲基化反应，近年来才得到了长足的发展，其研究范围扩展到单取代的胺、胺的类似物以及酰胺等化合物，并发展形成Aza-Mannich和Mannich-Michael等复合Mannich反应。

Four different ionic liquids, BF4, BF and PF6 were investigated, arid PF6 showed the best effect when used as the reaction media, giving the highest yield in the shortest reaction time. Promoted by KF in PF6, N-aryl or N-alkyl monosubstituted sulfonamides could react with various activated halides and unactivated primary halides smoothly. Reactions were performed at 85℃ for 2~10 hours, and thirteen N-alkylation products were obtained with 70%~97% yields. Moreover, the ionic liquid recovered could be reused for three times with no appreciable decrease in yield and reaction rate.

结果表明，以PF6为反应介质时显示出了最好的效果，反应的时间最短，收率最高。N-芳基或N-烷基单取代的磺酰胺和各类不同结构的活化的卤代烃和未活化的一级卤代烃在PF6中KF作用下，85℃反应2~10h，以70%~97%的优良收率得到了13个N-烷基化产物，而且离子液体回收使用3次后效果未降低。

The sexual organ coefficents were calculated. Results: The high dose of osthole significantly increased the level of serum testosterone in the reproduction system disturbance mice and increased significantly the AR positive cells percentage of peritubular myoid cells. The low and high doses of osthole significantly increased the coefficients of seminal vesicle.

结果：蛇床子素高剂量可显著升高环磷酰胺致生殖系统损伤雄性小鼠血清中睾酮的含量(P.05)，免疫组化结果显示，高剂量可增加睾丸肌样细胞AR阳性细胞表达百分率，高、低剂量可增加精液囊的脏器系数。

Myristic monoethanolamide ammonium sulfatewas synthesized from myristic acid and monoethanolamide with sulfamic acid as sulfating agent .

在芳烃类溶剂与羰基化合物催化剂存在下，以肉豆蔻酸和乙醇胺为原料，氨基磺酸作硫酸化剂，制备了肉豆蔻酸单乙醇酰胺硫酸酯铵盐。

The absorption maxima and emission maxima didnt change obviously between the five-membered compounds when N-methyl as the bridge atom. The value of extinction coefficient was increased obviusly compared naphthalimide with naphthalic anhydride.

甲基化氮为桥原子的五元化合物之间最大吸收和发射波长相差不大，萘酰亚胺的消光系数比萘酐增加明显，loge最大相差可达0.45，荧光强度也略有增加，相差0.1左右。

We understand that the table on the main screen printing ink resin to polyamic for the different in printing ink, mainly chloridizing polypropyrene and nitrogenation of EVA.

据我们不懂，边印油不朱的主给树脂以聚酰胺为众，而边印油不朱则不差别，主给是氯化聚丙烯和氮化EVA。

Rice aging leads to the decreasing of total starch content and Fla content of amylopection, strengthen the rice starch crystallite and tightening the organization framework of endosperm, which was considered as the main cause leading to the changing rice starch gelatinization properties, rice aging leads to some degree of cross-link of rice oryzenin, SDS-poly-acrylamide gel electrophroresis gave the same result.

陈化导致米谷蛋白的交联，SDS聚丙烯酰胺凝胶电泳验证了这一结果。

S: The interface formation and magnetism of Fe, Co overlayer on sulfur passivated GaAs(100) by using CH 3CSNH 2 have been studied with synchrotron radiation photoemission and ferromagnetic resonance.

利用同步辐射和铁磁共振研究了经硫代乙酰胺硫钝化处理的GaAs(1 0 0 )表面生长的Fe、Co超薄膜与衬底的界面形成及磁性。

The X-ray diffraction shows that the resin is crystalline. The heat analysis shows that the resin is well heat-resistant and has very good thermal stability and T=101℃. The T is better 10℃ than polyphenylene sulfide. The PASI resin will be applied abraod.

表征结果表明，聚合物为设计聚芳硫醚酰亚胺结构；X射线衍射表明聚合物为结晶性聚合物；热性能测试表明，聚合物的玻璃化温度为101.91℃，高于聚苯硫醚(87.00℃)，聚合物具有良好的热性能。

Results: A 2-AAF/PH model was successfully established to activate the oval cell compartment in rat liver. HOC appeared mainly in periportal areas and could extend into the liver parenchyma. The volume of oval cells was about as big as one forth to one sixth of normal liver cells, with a oval-shaped nucleus and high nuclear/cytoplasm ratio.

结果：以2-乙酰氨基芴加三分之二肝切除术成功建立了大鼠肝卵圆细胞增殖模型，HE染色汇管区可见大量增殖的小圆细胞，并可向肝实质内延伸，免疫组化证实增生细胞OV-6、c-kit、CKl9及AFP染色阳性，而白细胞共同抗原染色阴性。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。