碳

The thermal properties and mechanical properties were analyzed by Thermogravimetric analysis and Hardness Pencil Test and Universal Test Machine, respectively. The structure of prepared PI-MWNTs was characterized by Fourier transform infrared spectrometry. The morphology of PI-MWNTs were observed by scanning electron microscopy and transmission electron microscopy. The electrical conductivity was analyzed by Super Megohmmeter.

本研究中使用能量分散光谱仪来鉴定多壁奈米碳管纯化效果，热重损失分析仪、铅笔硬度计、万能试验机分别测定材料的热稳定性质和机械性质，傅立叶转换红外光谱仪来鉴定其化学结构，扫描式电子显微镜与穿透式电子显微镜来观察材料的剖面型态与奈米碳管和基材之间的分散性，超绝缘量测仪量测材料的电性。

As carbon sources, soluble starch and maltose are better; saccharose and glucose are good; glycerin and mellifluence are not suitable.

可溶性淀粉和麦芽糖为较好碳源，其次是蔗糖和葡萄糖，甘油和甘露醇是黑脉羊肚菌菌丝不能很好利用的碳源。

Methanol molecule participates in the proton transfer process, which takes place by a intermolecular six-membered proton-transfer transition state structure instead of the intramolecular four- membered. Consequently, the activation energy of the proton-transfer process is reduced greatly,resulting in the carbon-carbon bond formation process become the rate-determining step. The results are consistent with Aggarwal's the latest dynamics experiments.

CH3OH分子参与质子转移过程，使得原本通过四元环结构过渡态的质子转移过程通过六元环结构过渡态实现，从而极大地降低了质子转移过程的活化能，碳-碳键形成过程进而成为反应的速度控制步骤，研究结果与Aggarwal等的最新动力学研究成果相吻合。

Furthermore, Samples based on poly methyl methacrylate and different weight percentages of modified carbon nanotubes were prepared.

改性后的碳纳米管与甲基丙烯酸甲酯进行复合制备了碳纳米管/聚甲基丙烯酸甲酯复合材料。

The Lower/Upper Cretaceous boundary in Songliao Basin is,therefore,between the Quantou and Denglouku formations,instead of between the Quantou and Qingshankou formations.2.The dark mudstones and shales in the Member 1 of Qingshankou Formation are of high organic carbon and low diasteranes contents.Organic geochemical characters are illustrated by biomarkers of 28,30-bisnorhopane and gammacerane,and positive excursion of kerogen isotopes.It is suggested that the dark mudstones and shales in the Member 1 of Qingshankou Formation are the products of lake anoxic period.It corresponds to the oceanic anoxic event at Cenomanian-Turonian boundary in Cretaceous.3.Based on the study of biostratigraphy,chronostratigraphy,magnetostratigraphy and event stratigraphy,a correlation of the lacustrine sequence to marine standard has been proposed,i.e.,the Quantou Formation corresponds to Cenomanian stage,Qingshankou Formation correlates to Later Cenomanian-Early Turonian,Yaojia Formation to Later Turonian-Coniacian,Nenjiang Formation to Santonian-Campanian.Sifangtai and Minshui Formations to Maastrichtian. 4.Analysis of lithology,lithofacies and microfossils of Cretaceous in Songliao Basin, shows that shore and shallow lake facies yield the most abundant microfossil groups,and the predelta and deltaic distributary plain facies rich in fossils as well.In the shore and shallow lake areas during the high level periods(such as Qingshankou and Nenjiang sedimentary periods),the lacustrine biota are of high diversity and high abundance.

因此，松辽盆地上、下白垩统的界线应在泉头组的底界，即泉头组与登娄库组之间，而不是泉头组的顶界。2、青山口组一段黑色泥岩、页岩具有有机碳含量高、重排甾烷含量低，生物标志物出现28，30—双降藿烷和伽马蜡烷，干酷根碳同位素具有正向偏移等有机地球化学特征，表征为青山口组一段黑色页岩、油页岩是古湖泊缺氧事件的产物，它对应于白垩纪古海洋Cenomanian—Turonian期界线附近缺氧事件，二者具同步性。3、通过生物地层学、年代地层学、磁性地层学和事件地层学研究，认为泉头阶大体相当于Cenomanian阶，青山口阶相当于晚Cenomanian—早Turonian阶，姚家阶对应于晚Turonian—Coniacian阶，嫩江阶对应于Santonian—Campanian阶，四方台阶和明水阶相当于Maastrichtian阶。4、通过对松辽盆地上白垩统的岩性、岩相及微体化石分析，认为滨浅湖相是微体生物群最为发育的相带，其次为三角洲前缘相和三角洲分流平原相。

Soil organic carbon mineralization is closely related with carbon cycle in terrestrial ecosystem and global climate change.

土壤有机碳矿化与陆地生态系统碳循环和全球气候变化密切相关。

Molybdenum carbide catalysts were prepared by temperature-programmed reaction using CH4/H2 gas mixture to carburize molybdenum trioxide at different temperatures, then were characterized with XRD and BET.

以MoO3为前躯体，CH4/H2为还原碳化气，采用自制的程序升温还原碳化反应装置制备出Mo2C催化剂，并用XRD、BET进行表征。

A soft, silvery-white, malleable, ductile, metallic rare-earth element, obtained chiefly from monazite and bastnaesite and used in glass manufacture and with other rare earths in carbon lights for movie and television studio lighting.

镧：一种质软、银白色、有延展性的、可塑性的稀有金属，主要是从独居石和氟碳铈矿中提取出来，用于玻璃工业及电影或电视摄影照明的碳棒灯中。

I can provide raw materials for the Division include: tantalum ore, niobium ore, tungsten ore, molybdenum ore, cobalt ore, nickel ore, monazite, zircon ore, chromium carbide, vanadium carbide and so on, the majority of imported raw materials.

我司可提供的原材料包括：钽矿、铌矿、钨矿、钼矿、钴矿、镍矿、独居石、锆矿砂、碳化铬、碳化钒等，大部分为进口原料。

The average organic carbon concentration value in salt marsh area during neap and spring tidal cycles was 1.7 times as that of bald field.

5倍。沉积物有机碳浓度变化总体趋势较为平稳，平均有机碳浓度为1.6 mg g -1。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。