甲烷

The analysis and experiment results of spark igniting premixed laminar combu stion of CH4/Air/Diluent charge in a constant-volume combustion bomb have bee n des cribed.

介绍并分析了甲烷-空气-稀释气混合气在定容燃烧弹内进行火花点火预混层流燃烧的试验结果。

The effects of nutrition condition on the activation of stratal microflora, especially the beneficial bacteria including hydrocarbon degrading bacteria, methaneproducing bacteria and nitrate reducing bacteria for oil recovery, were investigated on the basis of the analysis of the stratal microflora in S12 block in Shengli Oilfield.

在考察了胜利油田 S12块注入水和油井产出水中细菌群落状况的基础上，针对烃类降解菌、产甲烷菌、硝酸盐还原菌等有益于采油的细菌群落，研究了营养条件对细菌群落激活的影响。

The substract is (100) single crystal silicon, and operating gases are mixture of Cl-I4 and H2 in all experiments.

实验中所用的基片为P型硅（100）单晶片，工作气体为高纯甲烷（CH_4）和高纯氢（H_2）。

However,when Sulfury fluride, Methy1 bromide and Chong-Jun-Wei were used in two drug combination separately, their insecticidal effect could be raised obviously.

结果：硫酰氟、溴甲烷和虫菌畏单一使用，在常用浓度下对大肠杆菌灭菌率在25%以下，对淡色库蚊24h杀灭率在30.13%以下；常用浓度加倍量对淡色库蚊24h杀灭率在55.20%以下；对德国小蠊和美洲大蠊的杀灭率亦仅为39.17%和43.33%以下。

MSMstands for Methyl Sulphonyl Methane – a naturally occurring organic sulphur compound that provides building blocks for the production of joint cartilage.

的MSM代表甲基磺酰甲烷-一种天然的有机硫化合物，提供积木生产关节软骨。

The ligand of the chiral Schiff base and acetylacetone vanadium are subjected to complexation in situ, hydrogen peroxide is taken as an oxidant, aryl alkyl thioether asymmetric oxidation reaction is catalyzed in a toluene or dichloromethane solution under low temperature or room temperature, enantioselectivity of chiral sulphoxide is 72 percent to 95 percent ee, and yield is 42 percent to 83 percent.

将上述手性西佛碱配体与乙酰丙酮氧钒原位络合，采用双氧水为氧化剂，在甲苯或二氯甲烷溶液中低温至室温下催化芳基烷基硫醚不对称氧化反应，手性亚砜的对映选择性为72％-95％ee，产率为42％-83％。

Pictured above is an image of Mars superposed with a map of the recent methane detection.

上图是火星甲烷分布图与火星地图的叠加结果。

The test area was off the north coast of Alaska centred on Harrison Bay. The concentration of methane in surficial sediments, in the water column when ice is present and absent, and in seasonal sea ice were measured.

检验的地区在阿拉斯加北部海岸的Harrison海湾，测量了有冰和没冰两种情况下水中表面沉积物的甲烷浓度。

Based on a thorough analysis of the experimental results, a coupling mechanism of the catalytic selective oxidation and non-catalytic partial oxidation in which the surface adsorbed 〓 species and the lattice 〓 species take part synergically.

在全面分析实验结果的基础上，提出了一个由表面吸附氧种〓和晶格氧种〓协同参与的甲烷催化选择氧化与气相非催化部分氧化相耦合的反应机理，催化剂的参与既在表面开辟了生成〓和HCHO的新途径，又可将气相反应中的强氧化型物种转移到催化剂表面，形成有利于选择氧化的表面活性氧种，同时避免了气相中强氧化型物种浓度过高而导致选择氧化产物深度氧化。

Under thermophilic conditions,the δ13CH4 values remained at a level about -70‰,showing that methane were solely produced from CO2reduction,and acetate syntrophic oxidation happened during the active methane production phase.

高温（55℃）条件下，δ13CH4值始终维持在约-70‰，表明甲烷主要由CO2还原作用生成，在快速产CH4阶段，乙酸氧化和CO2还原作用是CH4生成的重要途径。

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。