烯

Foreign atoms were placed over the sheet at several symmetrical positions, namely, over a carbon atom, over a C-C bond, over the center of a pentagonal, hexagonal, and heptagonal ring. The following conclusions have been drawn: The cohesive energy of adsorbate and perfect sheet at all three adsorption sites is always lower than that on a sheet with a Stone-Wales defect embedded at all five sites.

得到的主要结论如下：所有外来原子在含有Stone-Wales缺陷的石墨烯片上不同位置上吸附的结合能都大于在其在完整石墨烯片上不同位置上的结合能，因此在碳管中引入Stone-Wales缺陷能够提高原子在碳管上的吸附能力，同时提供了很多稳定的吸附位置。

When the concentration of sulfur dioxide was fixed, the reaction rate increased separately with increasing oxygen content and water vapor content, when oxygen content was 20%, the reaction rate was the highest, while water vapor content was 444μmol/L, there was an optimum value for the photocatalytic degradation rate of heptene.

庚烯的降解速率随着二氧化硫浓度的增加而增加，最终趋于稳定。在二氧化硫浓度一定时，庚烯的反应速率分别随着氧气和水分子含量的增加而不断增大，氧含量为20%时速率最大；水分子含量为444μmol/L时速率最大。

During the kraft cooking process,the temperature,effective alkali charge and time affected the pulp HexA content significantly,and the variation of sulfidity did not influence the pulp HexA content.

在硫酸盐法蒸煮过程中，蒸煮温度、有效碱用量和保温时间对纸浆己烯糖醛酸的含量均有明显的影响，而硫化度则对纸浆中己烯糖醛酸的含量影响不大。

The result indicated that the cellular fatty acid compositions of Salmonella, Escherichia coli, Vibrio and Shigella all contain tetradecanoic acid, hexadecanoic acid and octadecenoic acid, the total content is around 90%, in which the hexadecanoic acid is the most, above 40%, next is the octadecenoic acid, around 30%.

结果表明：沙门氏菌属、埃希氏菌属、弧菌属和志贺氏菌属全细胞脂肪酸组分都含有十四烷酸、十六烷酸和十八碳烯酸，这三种脂肪酸占总脂肪酸含量的90%左右，含量最高的是十六烷酸，含量在40%以上，其次是十八碳烯酸，含量在30%左右。

Kinds of fatty acids were detected by method 1 and 24 fatty acids were detected by method 2. The results showed that the main components of the fatty acids in pomegranate seeds are: octadecenoic acid, octadecdienoic acid, docosanoic acid, hexadecanoic acid, octadecanoic acid, eicosenoic acid and eicosanoic acid.

方法一共检测出14种脂肪酸，主成分为油酸、亚油酸、山嵛酸、棕桐酸、硬脂酸和二十碳烯酸；方法二共检测出24种脂肪酸，主成分为棕橺酸、硬脂酸、花生酸、山嵛酸、油酸、亚油酸、二十碳烯酸等。

The bubble point, dew point and critical point were determined for binary mixtures of 1 pentene and 1 hexene, and thus the problem that critical parameters are evaluated without accurate and reliable theory is solved.

测定了1－戊烯－1－己烯二元混合物在不同组成下的泡点、露点及临界点，解决了没有准确可靠的理论估算临界数据的问题。

The temperature and the addition of surfactant can accelerate conversion and selectivity of reaction. Under the conditions of 200℃、0.38MPa、0.06 mol/L、t=4h,the conversion of hexene is 86.32%.Selectivity of 2-hexene and 3-hexene is 30.46% and 57.86%.

结果表明，当表面活性剂的加入以及反应温度的升高，能明显提高反应的转化率和选择性，在200℃、0.38MPa、0.032 mol/L的反应条件下，反应4小时底物转化率为86.32%，3-己烯的选择性为57.86%，2-己烯的选择性为30.46%。

Research on the Over critical and Overflow at Variable Conditions of Marine Steam Turbine;2. Strongly total domination edge critical graphs;3. This paper measures the critical energy of detonation of hydrocarbon fuel(butane,naphtha,pentene,hexene,JC5) and air mixtures using Bruceton method in the rectangular shock tube.

该文在矩形激波管内采用布鲁塞顿法测定了丁烷、石脑油、戊烯、己烯、JC5等碳氢燃料与空气混合物形成爆轰时所需的临界起爆能，并根据所测定的临界起爆能的大小，分析比较了这几种碳氢燃料的相对爆轰敏感度及相应的安全性能，最后讨论了分子量，分子中键的饱和度和分子结构等因素对碳氢燃料临界起爆能及相应的安全性能的影响。

This paper measures the critical energy of detonation of hydrocarbon fuel(butane,naphtha,pentene,hexene,JC5) and air mixtures using Bruceton method in the rectangular shock tube.

该文在矩形激波管内采用布鲁塞顿法测定了丁烷、石脑油、戊烯、己烯、JC5等碳氢燃料与空气混合物形成爆轰时所需的临界起爆能，并根据所测定的临界起爆能的大小，分析比较了这几种碳氢燃料的相对爆轰敏感度及相应的安全性能，最后讨论了分子量，分子中键的饱和度和分子结构等因素对碳氢燃料临界起爆能及相应的安全性能的影响。

Both catalytic activity and selectivity of Ru(PPh_3)_3Cl_2 were improved in ionic liquid BMImPF_6/DME medium.The conversion of hexene and selectivity ofβ-adduct for the hydrosilylation reaction of 1-hexene with triethoxysilane catalyzed by Ru(PPh_3)_3Cl_2 in ionic liquid BMImPF_6DME (V/V=1/4) medium at 90℃were 100% and 89.0%,respectively.

实验结果表明，在乙二醇二甲醚/离子液体1-丁基-3-甲基咪唑六氟磷酸盐(BMImBF_6)(V/V =1/4)介质中，于90℃下，己烯与三乙氧基硅烷反应的转化率为100%，β加成物的选择性可达89.0%，而用Rh(PPh_3)_3Cl作为反应的催化剂，在纯离子液体BMImPF_6中，就可以高效催化烯烃与三乙氧基氢硅烷的加成反应，过渡金属Rh(PPh_3)_3Cl，Ru(PPh_3)_3Cl_2催化剂/离子液体BMImPF_6催化体系，不仅解决了产物与催化剂分离困难这一难题，同时，离子液体BMImPF_6的存在提高了过渡金属Rh(PPh_3)_3Cl，Ru(PPh_3)_3Cl_2催化硅氢加成反应的活性，特别是β加成物的选择性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐