乙胺

The result makes clear, with anhydrous chloridize zinc, sulfur acting acetyl amine is raw material, it is OK to use chemical method the ZnS Na Mijing that preparation bead diameter controls in 10 Nm, earning sample is α- construction of mine of ZnS fine zinc, 6 brilliant are, form appearance is globose or close globose.

结果表明，以无水氯化锌、硫代乙酰胺为原料，采用声化学法可以制备粒径在10 nm左右的ZnS纳米晶，所得样品为α-ZnS纤锌矿结构，六方晶系，形貌为球形或近球形。

N-Carbobenzoxy-L-homoserinelactone was prepared via N-alkylation reaction of L-methionine and iodoacetamide with benzyl chloroformate as amino protecting agent.

以L-蛋氨酸为原料，氯甲酸苄酯为氨基保护试剂，与碘乙酰胺(I2微量)内酯化反应，合成N-苄氧羰基-L-高丝氨酸内酯。

The new surfactant was synthesized from the main starting materials such as lauric acid, p-cresol, chlorosulphonic acid and ethylene diamine, by 5 classic reactions which are acyl chlorination, esterification, Fries rearrangement, sulfonation and condensation, with total yield of 58%.

作者以十二酸、对甲酚、氯磺酸、乙二胺等为主要原料，共采取了酰氯化、酯化、Fries重排、磺化和缩合等5步经典的单元反应，合成了该表面活性剂，总收率为58％，并探讨了各步反应的条件对收率的影响。

The apparent enlargement of the ventricles seen here is due to atrophy of the head of the caudate from neuronal loss with Huntington's disease, an autosomal dominant condition characterized clinically by choreiform movements.

明显的脑室扩张是因为Huntington病时二乙基溴乙酰胺丧失使尾状核头萎缩，常染色体显性遗传，临床上伴有典型的舞蹈症。

Based on hydrogen peroxide and ammonium persulfate as compounded initiating system,unsaturated vinyl monomers were used to directly copolymerize a new high range polycarboxylate water reducer structurized in carboxyl,esterquat and amido as main chain and in polyethylene glycol ether as side chain.

以过硫酸铵和双氧水为复合引发体系，采用不饱和单体直接共聚，得到一类主链为羧基、酯基、酰胺基，侧链为聚乙二醇醚基的新型聚羧酸高效减水剂，研究了共聚物的结构对分散性能的影响。

Osteoblasts obtained from crania of neonatal Wistar rats were cultured on surfaces of PLA and EMPLA, with glass as control.

探讨了成骨细胞与新型生物可降解材料乙二胺改性聚乳酸的细胞相容性。

The patients' blood is collected through one of the peripheral veins like the cubital vein, using a vacutainer and needle, this already contains EDTA, thus the blood does not clot.

患者的血液是使用采血管和针头通过肌体的外围组织的静脉例如肘部静脉采集，它已经含有乙二胺四乙酸，因此，这些血液不会凝聚。

Based on the problem of various types of catalyst and according to the features of carbonylation catalysts reactions, our team has been designed a series of new metal complexes of benimidazoles, which can be used for carbonylation catalyst of industry. Seven new benzimidazole derivatives were prepared by the o-phenylenediamine、oxalic acid、glycolic acid、monomethyl monopotassium malonate、ethyl cyanoacetate、succinic anhydride. The structures of them were confirmed by IR、Elemental analsis. The crystal structures of d and e were determined by X-ray single crystal diffraction of Germanic Bruker Smart APEX II CCD. The catalysis of them was tested by carbonylation reactions.

本文设计以邻苯二胺和草酸、羟基乙酸、丙二酸单甲酯、氰基乙酸乙酯、丁二酸单甲酯为原料采用PPA催化和无机酸催化法，合成了4种苯并咪唑-2-羧酸衍生物并进行了表征；培养了2个化合物d、e的晶体并测定和讨论了晶体结构；制备了3种未见报道的苯并咪唑金属配合物，对配合物在羰基化法制醋酐-醋酸反应的催化作用进行了初步试验。

When acetone oxime was used as substrates, lower conversion and selectivity were obtained. For cyclopentanone oxime as the substrate, the Beckmann fragmentation was observed.

对于丙酮肟和环戊酮肟，前者重排得到N-甲基乙酰胺的选择性低，后者则不发生Beckmann重排。

Taking 4-bromobenzaldehyde, acetic, benzaldehyde and ammonium acetate as major raw material, the 4, 5-bis(4-bromophenyl)-2-phenyl-1H-imidazole was synthesized by means of catalysis, oxidation and Debus cycloaddition reaction.

以对溴苯甲醛为原料通过催化，氧化生成1，2-二（4'-溴苯基）乙二酮，再以其与苯甲醛、醋酸胺和醋酸通过德布斯法合成2-苯基－4，5-二（4'-溴基苯基）咪唑。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。