苯并

It was found that the sulphur and nitrogen substituted heteroacenes were intrinsically hole-transporting materials due to the reduced hole reorganization energy and the enhanced overlap between HOMOs.

发现由于减小的空穴重整能和增大的最高占据轨道的轨道重叠，硫和氮原子取代的多并苯分子在本质上为空穴传输材料。

The concentration of the gas could be achieved by measuring the change of the conductivity. In the experiments, the gas sensor was prepared by spreading the water solution of carbon nanotubes between the interdigitated Au electrode, which was splashed on alumina. In this paper, three methods, such as mixing palladium and copper chloride, deoxidizing palladium and copper by chemical and electrochemical means, were used to doping palladium and copper in multi-wall carbon nanotubes.

实验中我们采用单壁和多壁纳米碳管作为敏感材料，在叉指金电极间涂布纳米碳管悬浊液作为气敏膜，用于有机挥发物如甲醛、苯、甲苯和二甲苯的检测，并着重研究了掺杂氯化钯和氯化铜盐溶液、化学和电化学方法掺杂钯和铜金属颗粒对多壁纳米碳管传感器的气敏性能的影响。

No responsible predisposing factor was found in these MRSA-infected patients. After treatment, 21 patients improved.

在这些被抗二甲氧基苯青霉素金黄色葡萄球菌感染的病患中，并没有任何潜在的因素被发现。

In the second part, we discuss the mechanism and factors of deposit-tion forming. The factors are temperature, rate of titrating the sulphurc acid, rate of stiring, consistency of sulphuric acid and consistency of sodium hydroxide.

接下来本文探讨了沉淀的形成机理和沉淀形成时影响沉淀纯度的因素，并确定了碱减量废水中回收对苯二甲酸的影响因素为温度、加酸速度、搅拌、加入的酸浓度、废水的碱度。

The synthetic product was proved by IR and MS. The translation ratio of nitrobenzene was about 90%by titrating amino group value. The selectivity of p-aminophenol was 80%.

合成产品通过IR、MS确认其结构，并通过滴定氨基值计算出硝基苯的转化率为90％左右，产品的选择性达80％。

In this article,a non-carcinogenic dye intermediate 4-aminodianiline-2-sulfonic acid is synthesized from 4-nitro-1-chlorobenzen through sulfonation,condensation and reduction.

针对联苯胺作为合成染料的重要中间体已被确认为致癌物的情况，以对硝基氯苯为原料，经磺化、缩合、还原，合成了一种无致癌性并取代联苯胺的双胺化合物染料中间体4-氨基二苯胺-2-磺酸，利用红外光谱、差热和氢谱核磁对其性质进行了表征。

With several organic solvents,proanthocyanin was extracted from grape seeds by gradient separation,and the activities of different extracts in cleaning out super oxygen anion radical were studied by pyorgallol auto-oxidation and DPPH.

选用多种有机溶剂，经过梯度分离，从葡萄籽中得到葡萄籽原花青素提取物，并采用邻苯三酚和DPPH方法研究提取物的清除自由基活性。

We calculate the correlation energy of poly (para-phenylene-vinylene) chain and the band energy gap value of PPV with taking the long-range electron correlation into account, and we discuss the influence of the correlation energy on the band energy gap.

在考虑电子-电子相互作用情况下，对基态非简并聚合物聚对苯乙炔的长程关联能进行了理论计算，并用长程关联能对带隙进行修正，最后讨论了长程关联能对带隙的影响。

The synthesis of homocubane derivatives from 4, 6-dicarboxy homocubane was studied, several new compounds were synthesized, and the behavior of homocubanoyl chloride on some reaction was found to be similar with that of benzoyl chloride.

对由4，6—二羧基高立方烷合成不同的衍生物作了一系列研究，合成了一些新化合物，并发现了高立方烷酰氯衍生物与苯甲酰氯有相似的反应性。

Under catalysis of AlCl3, trans-1-chloro-3-phenyl-1-propen-3-one was first prepared using benzoyl chloride and acetylene in CH2Cl2 at 20~25℃, which the yield is 7% higher than that in CCl4 at 40~45℃.

通过对其反应条件的研究，首次用苯甲酰氯和乙炔在三氯化铝作用下合成出反－3-苯基－1-氯－1-丙烯－3-酮；并发现用二氯甲烷作介质在20~25℃下的反应产率，比用四氯化碳作介质在40~45℃下的反应产率约高7%。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。