胺化

In this paper several methods including acylamide dehydration, metal cyanide replacement, etherification and isoxazole method for synthesis of 3,3-diethoxyethylcyanide were reviewed.

综述了3，3-二乙氧基丙腈的合成方法，包括酰胺脱水、金属氰化物取代、醚化和异恶唑法，用于工业化生产较为满意的合成路线是以1，1，3，3-四乙氧基丙烷为原料的异恶唑法。

Synthesis and performance of itaconic acid- maleic acid copolymer

性质： 一般可分为萘磺酸-甲醛缩合物和磺化三聚氰胺甲醛缩合物。

The solubility in general organic solvents, oleic acid and lipin of both derivatives were also studied. In order to find out the solubilities in general organic solvents, PhCS that had satisfied solubility in DMF, DMAC and DMSO and EHCS that was amphiphilic were prepared.

为考察壳聚糖衍生物在通用有机溶剂中溶解性问题，我们制备出了在DMF、DMAC、DMSO等通用有机溶剂中溶解性很好的邻苯二甲酰化壳聚糖以及水油两亲性的乙醚胺壳聚糖。

Methods Activate groups A and C meningococcal polysaccharide with cyanogens bromide and prepare into MenAPS-ADH and MenCPS-ADH derivatives by reacting with 1, 6-adipic acid dihydrazine. Mix MenAPS-ADH and MenCPS-ADH derivatives with purified tetanus toxoid at a certain mass ratio, then add l-ethyl-3(3-dimethylaminopropyl)-carbodiimide to prepare bulks of MenAPS-TT and MenCPS-TT conjugates respectively. Mix the two bulks at a certain ratio, add stabilizer and lyophilize to prepare group A+C meningococcal polysaccharide conjugate vaccine.

A群和C群脑膜炎球菌多糖在溴化氰的活化下，以1，6己二酰肼作为连接子，与精制破伤风类毒素在碳二亚胺作用下结合，再按一定的比例将两者混合，制成A+C群脑膜炎球菌多糖结合疫苗原液，加保护剂冻干后，制成A+C群脑膜炎球菌多糖结合疫苗。

Prophenoloxidase is a key enzyme for mediating melanotic encapsulation of oocysts,which may be transformed into active phenoloxidase by limiting proteolysis.

而前酚氧化酶(Prophenoloxidase，PPO)是介导卵囊黑化包被反应的一种关键酶，活化后可催化酪氨酸羟基化为二羟基苯基丙氨酸，二羟基苯基丙氨酸和多巴胺可进一步氧化为具有活性的苯醌活性，苯醌即可介导蛋白交联并聚合成黑色素层固定、隔离或杀死入侵的病原体。

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。

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。

Based on the functions from closed vessel experiments, the ballistic simulation results of maximum chamber pressure, muzzle velocity and p-t curves of a 105mm gun charged with LTSC nitroamine propellant at +50℃,+15℃ and -40℃ environmental temperature were in good agreement with experimental data.

在密闭爆发器实验的基础上，应用可视化程序对某105mm火炮采用低温感硝胺火药在+50℃、+15℃和-40℃环境温度下的最大膛压、初速以及膛压—时间曲线进行了弹道模拟，模拟与实验结果具有较好的一致性。

Based on the functions from closed vessel experiments, the ballistic simulation results of maximum chamber pressure, muzzle velocity and p-t curves of a 105mm gun charged with LTSC nitroamine propellant at +50C,+15C and -40℃ environmental temperature were in good agreement with experimental data.

在密闭爆发器实验的基础上，应用可视化程序对某105mm火炮采用低温感硝胺火药在+50℃、+15℃和-40℃环境温度下的最大膛压、初速以及膛压—时间曲线进行了弹道模拟，模拟与实验结果具有较好的一致性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。