查询词典 methane

Coal is one of porous media and during the process of its formation both a great volume of methane and quantity of water generated.

煤是一种多孔介质，在其形成过程中生成了大量的甲烷，并含有大量的水份。

In a 4×4 latin square design four steers (500±50) kg with permanent rumen and abomasum cannulae were fed on the different type of diets to study the effects of fiber digestion and VFA in the rumen on the methane production.

装有瘤胃和真胃瘘管的成年阉牛4头，体重（500±50）kg，采用4×4完全拉丁方试验设计，在呼吸代谢室内就不同日粮的纤维消化、瘤胃内VFA对甲烷产生量的影响进行了研究。

The soil temperature at 10cm is significantly correlated with the methane effiuxesin littoral zone of Huahu Lake, Zoige Plateau, and which is one of the most important factors influencing the methane emission from this district.

土壤温度是影响若尔盖高原花湖湖滨不同类型湿地甲烷排放的重要因素之一。

The induction time of methane hydrate formation was reduced, gas hydrate could grow rapidly, and the methane consumption was improved during hydrate formation in a quiescent cell with micella surfactants.

发现微量的表面活性剂降低了甲烷气体水合物在静止反应器中形成的诱导时间，并使水合物快速形成和生长，提高了水合物形成过程中的填充密度。

Efficient method was also taken up with for controlling and mitigating methane emissions from paddy fields.In summary, this study showed the feasibility of using new multi-temporal microwaveRadar ALOS data acquired in key dates during rice growing season to extract paddy ricegrowing area was tested. A modified rice backscatter model was developed on the basis oforiginal radiation transfer model for simulating paddy rice backscattering characeteristics. Themodified model and Genetic Algorithm Optimization Tool were synergized to reversephysical parameters and map rice biomass at spatial scale in the study area. At last, on thebasis of paddy rice planting area and farming practice data, biogeochemical DNDC modelwas utilized to simulate quantitatively estimating methane (CH_4) emission from paddy fieldsand represented some specific mitigation scheme.

综上所述，本研究在以下几方面取得了进展：验证了在水稻主要生长期内获得的多时相ALOS／PALSAR雷达数据提取种植面积的实用性；在原有辐射传输模型基础上进行改进，得到了适用于模拟水稻后向散射系数的一阶散射模型；利用改进的模型和遗传算法优化工具进行水稻结构参数反演，并对研究区开展水稻生物量空间分布制图和估算；利用DNDC模型模拟和定量估算稻田CH_4的排放量，进而提出了具体减排耕作措施。

Soil moisture is the key factor to control the methane oxidation activity in peat soils from the Zoige Plateau and the oxidation rates of methane in peat soils decreased with soil moisture content.

决定若尔盖高原泥炭土氧化甲烷速率的因素是土壤含水量，土壤含水量越小，土壤氧化甲烷的潜力越大。

The results showed that,by using G-ECBM technology,coalbed methane recovery ratio can be enhanced substantially,and the time for coalbed methane pre-extraction can be shortened thus improving the efficiency of coal mining.

研究结果表明采用地面混合气体驱替煤层气技术可以大幅提高煤层气采收率、缩短煤层瓦斯预抽时间、提高采煤效率

Through methane simulation experiment on ignition and blasting due to seam roof rock friction in Qinshui Coal Mining District of Yangcheng, it is shown that sparks will be generated through friction while caving ,causing gas and water mixture to fire, it is big hidden sources which cause methane blasting accident in goaf.

通过对阳城沁水矿区煤层顶板岩石相互摩擦引燃引爆瓦斯模拟实验，得出&岩石在冒落过程中相互撞击摩擦产生火花，可能引起瓦斯与空气混合物着火，是造成采空区瓦斯爆炸事故引爆源&的结论。

Liquid oxygen/methane engine has higher performance and methane has good regenerative cooling performance, so it is a preferred alternative propellant combination .

液氧/甲烷发动机具有较高的性能，甲烷有好的再生冷却性能，是一个可供选择的推进剂组合。

The results indicated: COD removal efficiency could remain at 70%, the product gas was mainly composed of methane, carbon dioxide and hydrogen, tile maximal methane producing activity sequentially were 211 mLCH4gVSS^(-1)d^(-1), 314 mLCH4gVSS^(-1)d^(-1), 319 mLCH4gVSS^(-1)d^(-1); The main components of effluent were acetic acid and propanoic acid; The dominant microorganisms sequentially were Bacillus, Coccus, Methanothrix and Methanosaet.

实验结果表明：COD的去除率可维持在70%左右，产气主要含有甲烷、二氧化碳和氢气，每格最大产甲烷活性依次为211 mLCH4gVSS^(-1)d^(-1)，314mLCH4gVSS^(-1)d^(-1)，319mLCH4gVSS^(-1)d^(-1)；出水产物为乙酸和丙酸；每格优势菌种依次为杆菌、球菌、甲烷丝状菌和甲烷八叠球菌。

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。