活性碳

Then esterification of 3, 7-dimethyl-2-pentadecanol with acetic anhydride, the active component of sex pheromone of pine sawfly, 3, 7-dimethyl2-pentadecanyl acetate was obtained in 83. 4％ yield.

最后，用乙酸酐对3，7-二甲基-2-十五碳醇进行酯化，得到松叶蜂性信息素的活性组分--3，7-二甲基-2-十五碳醇乙酸酯，收率为83.4％。

Being combining with products distribution in styrene oxidation, we propose the styrene epoxidation carry out with Ti metallacyclo intermediates, And at the same time Ti-ZSM-5 have properties both catalytic epoxidation and acid-catalysis, namely the skeletal Ti can catalyze styrene epoxidation to styrene oxide and the skeletal Ti and Al can provide Lewis acid site to cause the rearrangement of styrene oxide to phenylacetaldehyde rapidly, the solvolysis to glycols and the cleavage of C=C double bond. Ti-ZSM-5 can also provide Bronsted acid site simultaneously, which is also catalytic center for the solvolysis to glycols.

同时结合Ti-ZSM-5催化选择性氧化苯乙烯反应的产物分布结果，提出苯乙烯环氧化反应可能是通过金属有机环机理进行；Ti-ZSM-5同时具有催化环氧化和酸催化两种功能，其骨架钛可催化苯乙烯环氧化生成环氧苯乙烷，而骨架钛和骨架铝等可提供Lewis酸位使环氧苯乙烷迅速发生重排生成苯乙醛从而使其成为反应的主要产物，同时还可发生加成以及碳碳键的裂解等副反应：Ti-ZSM-5也提供Bronsted酸位，它也是生成加成产物的活性中心。

Which is made up of long carbon chain by N-alkylation or acylation,The surface activity is greatly enhanced because of structure of borate surfactants and the basic property of long carbon chain.

它们将长碳链通过N烷基化和酰化联接在一起的一类含硼表面活性剂，由于是含四配位硼氧杂环结构的表面活性剂和结合长碳链的基本性质从而极大的提高了表面活性。

Sonoelectrodeposition technique has been used to prepare bioactive brushite coatings on carbon/carbon composites.

通过声电沉积工艺在碳/碳复合材料表面制备了生物活性透钙磷石涂层，采用SEM、FTIR、XRD研究了超声场中电流密度对涂层组成结构和形貌的影响。

Its very difficult to support metal on the surface of crude CNTs. Compared with Pt/C,Pt/CNTs have higher performances in term of efficiency and selectivity. It can be concluded that the interaction between metal and CNTs favors both the high activity and selectivity in cinnamaldehyde hydrogenation.

Pt/CNTs在选择性肉桂醛的选择性加氢中表现出很高的加氢活性和选择性，这是由于纳米碳管外表面独特的结构以及纳米碳管和金属之间相互作用的结果。

In the first part of this work, it has been demonstrated that the ordered mesostructure of OMC plays an important role in the electrocatalytic activity towards the thiols and the destruction of this structure results in the decrease of such properties.

在论文第一部分中，我们介绍了介孔碳在硫醇类物质的电催化活性中所起的重要作用，以及介孔碳结构的变化导致这些性质的下降。

The thesis studied the total exocellular proteins, reductant sugar and the pectinase enzyme activity of CXJZ95-198 strain in glucose, mannose, xylan, mannosan and pectin culture media.Compared enzyme activity of pectinase, xylanose and β-mannanose. The secreted proteins in ferment fluid from different culture media were analysed by SDS-PAGE electrophoresis.

本论文对CXJZ95-198菌株在葡萄糖、甘露糖、木聚糖、魔芋粉及果胶五种不同碳源培养基中胞外酶蛋白质总量、还原糖及果胶酶活性的影响进行了研究；对果胶酶、木聚糖酶及β-甘露聚糖酶在甘露糖培养基中的酶活进行了比较；对CXJZ95-198菌株在不同碳源培养基中的发酵液在SDS-PAGE电泳中分泌出的蛋白带作了比较；对CXJZ95-198菌株所产生的胞外酶系中果胶酶进行了分离纯化。

This paper describes the determination on the activity of carbonic anhydrase (CA,EC4.2.1.1) of plant species in karst areas of Southwest China. CA was extracted from leaves of Vitex negundo. The thermostability of CA and the effects of anions and metallic ions on CA activity were investigated.

研究表明西南岩溶地区几种植物叶片中含有明显活性的碳酸酐酶(carbonic anhydrase， CA)，从黄荆叶片提取碳酸酐酶，该酶具有良好的热稳定性。

Invasion of Spartina grass has induced significant decline of the soil ecological properties of the wetlands.

土壤有机碳、土壤微生物生物量碳、氮含量以及土壤蔗糖酶与磷酸酶活性对滨海湿地土壤退化的反映最为强烈，可以作为指示性指标。

In commercial units, increasing C/O ratio can compensate the active loss of coked catalyst. Therefore, maximum profit can be obtained by control optimal residual coke content in the catalyst.

在实际工场再生触媒因残碳存在，使活性降低，可藉提高C/O比率来弥补；因此在不完全燃烧的再生模式下，控制适当的焦碳含量，有益於整体操作效益。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。