芳基的

Of the 4 soil enzymes studied, alkaline phosphatase and dehydrogenase were higher than urase and arylsulfatase in activity.

在所测定的4种土壤酶中，碱性磷酸酶和脱氢酶的活性高於脉酶和芳基硫酸酯酶的活性。

The factors such as introduction of aromatic heterocycle with small delocalization energy, formation of acceptor-donor structure, and strong electron-donating or electron-withdrawing abilities of substituents lead to the high third-order nonlinear optical property.

引入离域能小的芳杂环，形成吸供构型，增大取代基的吸或供电子能力等有利于获得较大的三阶非线性光学性能。

New chiral boronic acid sensor was synthesized and its enantioselectivity towards tartaric acid was studied.

合成了新的由蒽及苯乙胺衍生的手性芳基硼酸荧光探针，研究了该手性探针对酒石酸的对映选择性识别作用。

The results show that the plant communities naturally colonizing on the wastelands markedly increased enzyme activities (urase, arylsulfatase, alkaline phosphatase and dehydrogenase) in the upper layer of the tailings (0~5 cm).

结果表明，自然定居在尾矿废弃地上的植物群落类型能够显著影响表层尾矿中(0~5cm)的脲酶、芳基硫酸酯酶、碱性磷酸酶和脱氢酶的活性。

Further aza-Wittig reactions of iminophosphorane 3 with aromatic isocyanates gave the carbodiimide s 4, which were reacted with secondary amines to give 2-dialkylamino-thieno[2,3-d]pyrimidin-4(3H)-ones 6 in the presence of catalytic amounts of EtO-Na+ in 58%～82%.

应用膦亚胺3与芳基异氰酸酯的氮杂Wittig反应，生成的碳二亚胺4，再与仲胺作用得到中间体5，而后在醇钠的催化下关环制得2-二烷氨基噻吩并[2，3-d]嘧啶-4(3H)-酮衍生物6，产率为58%～82

The main compositions of LPs include shorter chain carboxylic acid derivatives, furan derivatives, cyclopentanone, phenol derivatives, benzene derivatives, cinnamic acid derivatives, longer chain carboxylic esters and sterides.

秸秆在亚/超临界醇中液化产生的LPs的主要组成成分包括短链脂肪酸衍生物、呋喃衍生物、环戊酮衍生物、含有取代基的肉桂酸衍生物、芳醛或酮衍生物、苯酚衍生物、苯衍生物，长链脂肪酸衍生物和甾族化合物。

Totally 17 new type of fulvene ligands have been synthesized by the reaction of substituted-benzoyl chloride with Cp and substituted Cp anions. All the new compounds are fully characterized by infrared spectroscopy,!

我们利用含芳香取代基的环戊二烯丛负离子与含-CN、-I、-CO_2CH_3等配位有机基团的芳酰氯反应成功地合成了17个既含芳香基团又含杂原子配位基团的刚性共轭富烯类配体。

These values indicate that the CoMFA model derived is significant and might have a good prediction for the inhibition activity of 4,4-diaryl-3-butenyl derivatives of nipecotic acid and guvacine compounds.

结论这些数值表明所得的CoMFA模型有实际意义，并且对3-哌啶甲酸和四氢烟酸的4，4-二芳基-3-丁烯衍生物抑制活性具有较好的预测能力。

Some products included methoxy group, naphthyl and heterocyclic aromatic moieties, and some were borne with two 1-propynyl groups. It is more important that compounds bearing halogens were also synthesized via this protocol.

运用此法不仅合成出一些含有醚键、萘环、杂环以及含有两个1-丙炔基的化合物，重要的是芳环上含有卤原子的化合物也能顺利地合成出来。

This review on organobismuth chemistry is carried out as the following four aspects:(1) the molecular structure characteristics and synthesis of new organobismuth compounds;(2) as reagents for cross-coupling, oxidation, arylation, and other reactions;(3) as catalysts for organic synthesis;(4) as medicines for the treatment of ulcers, anti-tumor and radio-therapy, etc.

本文回顾了近10多年来有机铋化学的研究状况，主要从以下4个方面进行综述：(1)新型有机铋化合物的合成途径与结构特征；(2)有机铋化合物作为交联偶合、氧化、芳基化和其它反应的试剂；(3)作为催化剂；(4)作为生物医药用于溃疡、肿瘤和放射治疗等。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。