苯胺的

Aniline compounds containing heptafluoroisopropyl was synthesized through taking sodium dithionite as evocating agent, and introducing heptafluoroisopropyl by free radical electrophilic substitution on benzene ring.

以连二亚硫酸钠为引发剂，在苯环上通过自由基亲电取代反应引入七氟异丙基，合成了一系列含七氟异丙基的苯胺类衍生物，研究了各种条件对反应的速度和收率的影响。

The measuring system is comprised of three layers of components: an electrochemical control layer, a fluidic control layer, and a control interface layer.

所观察到的有效振动模式主要是苯环平面上对称的运动，和苯胺上所观察的结果相互一致。

In previous work of helicid's structure modification show that 4 substituted groups of helicid are some ordinary acyclic and substituted aniline group, and it had no heptad heterocyclic substituted group.

在前期的豆腐果苷结构修饰工作中，豆腐果苷4位取代基多为一些简单的脂肪族、取代苯胺基等，尚无七元杂环作为取代基的此类化合物。

Despite their insolubility in many organic solvents, they are found to be soluble in nitrogen-containing solvents, such as DMF and pyridine.

这些化合物具有较好的稳定性，在胺类或其它含氮的有机溶剂中有较好的溶解度，如苯胺、二甲基甲酰胺或吡啶等。

Beijing 100034,China(The School of Oncology,Beijing Institute for Cancer Research,Beijing Medical University,Beijing 100034,China)(The School of Oncology,Beijing Institute for Cancer Research,Beijing Medical University,Beijing 100034,China)Abstract : Objective In order to study the effects of ATP on U937 cells. Methods Cell culture,flow cytometry,HE staining,Nigrosine staining and electron microscopy were used.

应用ATP(0.23g/L)作用于人白血病细胞U937，(1)用白细胞计数器每日计数细胞和计算抑制率；(2)用流式细胞分析仪文献检测 ATP对U937细胞周期改变和凋亡的影响；(3)苏木精-伊红染色和电子显微镜文献检测凋亡小体的形成过程；(4)用苯胺黑染色文献检测凋亡小体的生命本性。

Modifications of alkylation, chlorination and Vilsmeier reaction were employed for the synthesis of aromatic aldehydes bearing nitrogen mustard derivatives and halogenoalkylpiperazinyl.

通过对Vilsmeier反应、烷基化反应和氯化反应的改进提出了以简单易得的苯胺和苯基哌嗪为原料制备氮芥和哌嗪芳香醛的方法。

METHODS: Heparin with an aldehyde group as reducing end was prepared by nitrous acid degradation method.

将肝素钠用亚硝酸降解法降解，得到还原末端为醛基的肝素，分别溶解于二甲亚砜、含0.05 mL，0.5 mL冰醋酸的二甲亚砜溶液，再与对巯基苯胺发生还原胺化反应，用氰基硼氢化钠作还原剂，得到带巯基的肝素衍生物。

Through the research on the determination of SO2 in white granulated sugar by pararosaniline hydrochloride method, the sources of uncertainty components were analyzed, and the individual uncertainty values were evaluated, the expanded uncertainty of the m

摘要通过对盐酸副玫瑰苯胺法测定白砂糖中二氧化硫的测定过程进行研究，分析了该法测定结果的不确定度分量及其来源，确定了各不确定度分量值，给出了该法的扩展不确定度。

Result The overall results of pararosaniline hydrochloride were larger than that of advanced constants distillation trace titration but the difference was slight. The SO2 residues of three kind of Konjac powder were Yunnan Jianjing white konjac 2.35 g/kg; Sichuan Yibin white konjac 2.21 g/kg; Sichuan Yibin flower konjac 1.93 g/kg.

结果］盐酸副玫瑰苯胺法测定的整体结果比常量蒸馏微量滴定法的结果偏大，但差异不显著；测得3种魔芋精粉的SO2残留量分别为云南健晶白芋2.35 g/kg；四川宜宾白芋2.21 g/kg；四川宜宾花芋1.93 g/kg。

Red light-emitting polymer TPA-CNPPV was synthesized by alternatively introducing TPA and dicyano-substituted phenylene into the main chain.

通过将三苯胺与苯环上被对二氰基取代的PPV单元共聚，利用电子给体与电子受体交替的结构得到了发红光的聚合物TPA-CNPPV。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。