异位的

For Nitro derivatives of methylbenzenes, the pyrolysis initial reaction is an isomerization reaction. It means the alpha C-H bond in methyl rupture, then the Hydrogen atom transfer to the Oxygen atom in nitryl to form isomer.

甲苯的硝基衍生物的热解引发反应为异构化反应——α_中的C-H键断裂，氢原子转移到邻位硝基(-NO_2)中的氧原子上，生成新的异构体化合物。

Nitro derivatives of phenols, the pyrolysis initial reaction is an isomerization reaction It meansthe O-H bond in hydroxide rupture, then the Hydrogen atom transfer to the Oxygen atom in nitryl to form isomer.

苯酚的硝基衍生物的热解引发反应为异构化反应——酚羟基中的氢氧键断裂，氢原子迁移到邻位硝基(-NO_2)中的氧原子上，形成新的异构体化合物。

Three heteronuclear uranyl complexes were obtained via hydrothermal reaction, too.

另外，在水热条件下，还利用这些芳香有机酸合成了三个铀的异核金属配位聚合物，这为铀的异核金属配合物家族增添了新的成员。

Title compounds were synthesized by condensation of 3 benzylidene isochroman 4 one with 5 substituted 4 amino 3 mercap to 4 1,2,4 triazoles.

通过异色满酮－4的3－位苯亚甲基取代衍生物与4－氨基－3－巯基－1，2，4－三唑的缩合反应得异色满并［3，4－f］硫氮杂奥。

The hybrid composite PW11Co/PAMAM was characterized by FT-IR, UV-Vis diffuse reflectance spectra, XPS, XRD and TG/DTA, indicating that the PW11Co was chemically anchored to PAMAM. The morphologies of the title composite were characterized by scanning electron microscopy and transmission electron microscopy. The catalytic activity was evaluated by oxidation of isobutyraldehyde to isobutyric acid in MeCN under mild conditions (20 ℃, ambient pressure), showing that the title compound is a more effective and recoverable catalyst than corresponding PW11Co.

通过FT-IR、DR-UV-Vis、XRD、TEM、SEM、TG/DTA等手段对其进行了表征，并考察了其对异丁醛转化异丁酸的催化活性，实验结果表明，多金属氧酸盐通过配位键与聚酰胺-胺作用形成的无机-有机复合物可望成为一种催化活性高且易于分离和重复使用的多相催化剂。

Furthermore, heterochromatinization should be an earlier event than pericentric inversion.

另外，从刺鳅的X、Y上结构异染色质的相似分布来看，在性染色体进化过程中，异染色质化发生的时间应该早于臂间倒位。

Ethoxyberberine and 9-isopropanoxyberberine bearing with different sterically hindered groups were synthesized from beberrubine material.

以小檗碱为原料，合成了小檗碱C-9位不同空间位阻取代的9-乙氧基小檗碱、9-异丙氧基小檗碱，通过MS、1H NMR确认其结构。

The results are following:(1)We investigated the influence of the positional isomeric effect on structures.Due to the less space-crowding,it is easier for 3-pytpy to behave as bridging ligand than 2-pytpy under the same reaction conditions,while,it is easier for 2-pytpy to function as tridentate chelating ligand to construct supramolecular structures.

研究结果如下：(1)研究了两个吡啶取代三联吡啶配体的位置异构效应对配合物结构的影响。3-pytpy配体比2-pytpy具有更小的空间位阻，在相同的合成条件下容易以单-三齿桥联方式配位；而2-pytpy更易以三齿螯合形式配位，通过π…π堆积作用形成超分子结构。

In order to extend the effect and security of image encryption algorithm.An image encryption algorithm is presented based on three-dimension chaotic system and bit-computation.The permutation sequences and binary sequences are generated using three-dimension chaotic system.Firstly,the image is pretreated using chaotic system and permutation transformation,then the pixel's gray value's bit sequences are permuted using the permutation sequences generated before,at last,the pixel's gray value's bit sequences are computed by using XOR operating and the binary sequences.

为了改进图像加密算法的安全性和效率，提出了一种基于三维混沌系统和位运算的数字图像加密算法，利用三维混沌序列的坐标分量分别产生置换序列和二值序列，在对待加密图像进行预处理的基础上，先应用混沌置换序列对预处理的结果图像进行基于灰度值位序列的置换操作，然后再应用产生的二值序列对结果图像的灰度值位序列进行位异或加密运算。

The catalyst for IB dimerization, reactive site, reactive mechanism and dynamics research date was reviewed in this paper and try to explain the mechanism of selectivity enhancing by adding Tertiary butyl alcohol during IB dimerization and provide reference for the study of dimerization afterwards.

本文对异丁烯二聚催化剂、反应活性位、机理及动力学研究成果进行了综述，试图解释在异丁烯二聚时，加入的叔丁醇对二聚反应选择性提高的作用机理，为今后二聚反应的研究提供参考。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。