甲烷

Carbon Tetrachloride; Tetrachloro

四氯化碳；四氯甲烷

Diaminoalkanes react with sym - tetrachloroethane to give crystaline 2,2'- Bis -( hexahydropy-rimidine) derivatives 1 - 5, after treatment with aqua ammonia.

利用均四氯乙烷及二氯甲烷的胺化反应，合成了联氢化嘧啶衍生物1～5，4a，8b-反-4，5，8a，9a-四氮杂全氢芴(6)和8b，8c-顺-3a，4a，7a，8a-四氮杂环戊并全氢芴(7)。

From these experiments, it was confirmed that catalytic reductive dechlorination by zero-valent iron was a valid method to reduce the chloroform and tetrachloromethane in the wastewater from the chlorinated compound industry. The experiments results as above would been validated with the industrialisation Equipment.

实验结果表明，铁催化还原法可以有效的去除甲烷氯化物生产废水中的氯仿、四氯化碳；实验研究结果在中试工程中得到验证。

This article uses the tetramethyl ammonium hydroxide∕methyl iodide for methyl esterification and the method of temperature program ,determine the content of lactic acid, ethanoic acid, propionic acid, butyric acid.

使用四甲基氢氧化铵/碘甲烷对青贮料浸出液进行甲酯化反应，采用程序升温的方法，同时测定青贮料中乳酸、乙酸、丙酸、丁酸的含量。

Isotopic data for several of these rock units indicate that the methane within the inferred gas hydrate occurrences originated from both microbial and thermogenic processes.

几个岩石样品的同位素分析数据表明甲烷的出现源自微生物和热成的作用。

The authors anticipate this argument and note that their primary fluid inclusions lack the higher hydrocarbons that are normally associated with the most strongly 13C-depleted thermogenic methane.

作者们期盼着这一论据，同时也注意到了它们的原始流体内含物中缺少了一种通常都伴随有最为稳定的13C缺失的产热甲烷的，更为高级的碳氢化合物。

In c oal bed gas exploration and development in recent years,the gas source of the c oal bed methane is mainly considered from the viewpoint of thermogenic gas,however,whether the secondary biogas can be generated through the degradation of c oal by anaerobic bacteria is always a problem concerned by the people.

近年的煤层气勘探开发工作中，主要从热成气角度考虑煤层甲烷的气源，而煤能否被厌氧菌降解生成次生生物气则一直是人们所关心的问题。

This is the first report of thermostable DNA ligase of Methanocaldococcus jannaschii.

这是国际上对詹氏甲烷球菌DNA连接酶的首次报导。

The removal of organic sulfur such as thiofuran , thioether and mercaptan is the main objective of dry desulfurization , and hydroconversion of organic sulfur and preventing the methanation side reaction are the technological difficulties of hydroconversion desulfurization. The combination of two-level conversion and two.1evel absorption is the preferential scheme for refined removal of high-concentration organic sulfur.

脱除噻吩、硫醚、硫醇类有机硫是干法脱硫的主要目标，加氢转化有机硫并防止发生甲烷化副反应是加氢转化脱硫的技术难点，组合式两级转化、两级吸收是精脱高浓度有机硫的优选方案。

The experimental results indicated that the yield of 2,6-DMN can reach above 38%, when the usage of dimethylnaphthalene was 2g, the temperature reached 18℃, the reaction time was 2.5h, the mole ratio of water-free aluminum trioxide to dimethylnaphthalene was 0.8, the mole ratio of transmethylation agent tetramethylbenzene to dimethylnaphthalene was 1.0, the usage of methane trichloride was 15mL.

结果表明，2-甲基萘(2-MN)使用量为2g时，反应温度为18℃、时间为2.5h、n：n（2-甲基萘）=0.8、n：n（2-甲基萘）=1.0、二氯甲烷用量为15mL时，2，6-DMN的收率可达38%。

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。