硝氨基

We described that the nitro group is a stronger electron withdrawing and meta activating characters than the imide group, the amino and hydroxy are both electron donating groups and had ortho, para activating characters. The methyl group might have a steric hindrance effect in this reaction. Our results indicated that methyl group at the ortho position of the amino group on the benzene ring, the steric hindrance effect became stronger.

另一方面，由产率上的结果来看，可以得知硝基为强力的拉电子基团，会减少邻位和对位胺基的电子密度比间位多；而氢氧基与胺基是供电子基团，会增加邻位和对位胺基的电子密度比间位多；甲基取代对反应则只有立体障碍的影响，而且与反应的氨基成邻位存在下影响最大。

The method for producing 4-aminodiphenylamine from nitrobenzene and aniline was an ideal method at the present.

从硝基苯和苯胺直接合成4氨基二苯胺是当前一种较为理想的方法。

The mechanism of the interaction between bovine serum albumin and pyrano [4,3-b] pyran derivative, 2-amino-7-methyl-4-(4-nitrophenyl)-5-oxo-4,5-dihydropyrano [4,3-b] pyran-3-carbonitrile, was studied by means of fluorescence spectroscopy under physiological conditions.

用荧光光谱法分析了在生理条件下一种吡喃并[4，3-b]吡喃衍生物-2-氨基-7-甲基-4-(4-硝基苯)-5-氧代-4H，5H-吡喃并[4，3-b]吡喃-3-腈与牛血清白蛋白的作用机制。

The influence of the position of amino associated with pyrimidine on the reaction yields was discussed.

以取代的氨基嘧啶为共试剂，与多种芳香族硝基化合物进行了硒催化的羰基化反应，产率最高可达90％左右。

Experimental investigation of insensitive C6H6N6O6 by small angle X-ray scattering technique.

三氨基三硝基苯材料微孔结构的小角X射线散射实验研究。

The absorption characteristics and the structure at (0,0,1) plane of the 1,3,5-triamino-2,4,6-trinitrobenzene crystals of alternative copoly(vinylidene fluoride-chlorotrifluoroethylene) with various degree of polymerization has been studied by molecular dynamics simulations using compass forcefield and NVT ensemble model.

采用COMPASS力场和NVT正则系综的动力学模拟方法，搭建了聚合度分别为10， 50和100的偏氟乙烯/三氟氯乙烯交替共聚物，对交替共聚物在1，3，5-三氨基-2，4，6-三硝基苯的(0，0，1)晶面上的吸附和结构进行了分子动力学模拟。

Most of the org.impurities are nitro compds.They are mixed in DNS acid,turned to amino compds.in the reduction,and become the impurities of DSD acid,which result in important influences on the fluorescent whitener products,e.g.,yield,strength,shade,whiteness etc.

有机杂质主要是硝基物，混入产物DNS酸中，经还原后，生成氨基化合物，成为DSD酸中的有机杂质，对产品荧光增白剂的影响很大，如产品收率和强度、色光、白度等质量指标。

ISO with HAL additively enhanced -aminobutyricacid type A receptors function as did all of the following:HAL with chloroform, pentobarbital with ISO, and flunitrazepamwith ISO.

ISO ＋ HAL 和以下组合（ HAL ＋氯仿、戊巴比妥＋ ISO 、氟硝西泮＋ ISO ）一样，呈累加性地增强-氨基丁酸 A 型受体功能。

The influence of temperature on the spectra and nonlinear optics properties of the 4--4＇-aminoazobenzene compound Langmuir-Blodgettfilms were investigated using UV-visible absorption spectra and second harmonic generation technique.

采用紫外-可见吸收谱和二次谐波产生技术研究了温度对4-硝基-4＇-氨基偶氮苯分子Langmuir—Blodgett单层和多层膜的光谱和二阶非线性光学特性的影响。

Synthesis of p aminophenol from nitrobenzene by hydrogenation over Pt/γ Al 2O 3 catalyst was studied, and the appropriate process conditions were obtained.

以 Pt/γ-Al2 O3 为催化剂研究了硝基苯催化氢化法制对氨基苯酚的反应，得到了适宜的工艺条件。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。