碳

The stable carbon isotope s of saturated hydrocarbon and specific compound composition of the oil from the trachyte near the crater are relatively low,and the negative anomalies of the .

通过对欧利坨子原油地球化学特征的研究，发现原油性质的差异同储集层与火山口的相对位置有着密切的关系，在火山口附近的粗面岩储集层中，原油的饱和烃及其单体碳同位素值偏轻，类异戊二烯烃的碳同位素负异常基本消失，原油的CPI和OEP值较低(平均为1·21和1·06)。

Molybdophopsphoric Acid Catalysis in the Oxidative Cleavage of Olefins by the Hydrogen Peroxide Oxidative cleavage of the double bond could be catalyzed by H_3PMo_(12)O_(40) using H_2O_2 as oxidant, various trisubstituted olefins were oxidized to aldehydes or ketones in high yields. The system was not satisfied for electron-deficient olefins such as trans-(2-nitrovinyl) benzol or chalcone. The reaction of aliphatic olefins did not occur under the same conditions.

二、磷钼酸催化过氧化氢对烯烃的氧化断裂反应用过氧化氢(30％)作为氧化剂，磷钼酸可以催化氧化碳碳双键的断裂反应，三取代的烯烃被氧化生成醛或酮，产率较高；此体系对于缺电子烯烃如查尔酮，不饱和硝基化合物的断裂反应效果较差，脂肪族烯烃在此体系下的氧化并不发生。

The affection to growth of the strain was investigated with different carbon sources (yeast extract, smelting starch, sucrose and glucose) and nitrogen sources (NH42SO4, Ca(NO3)2, peptone and tryptone, and the result showed that the yeast extract was the best carbon source, whereas the peptone was the best nitrogen source.

通过比较酵母膏、可溶性淀粉、蔗糖和葡萄糖等不同碳源以及(NH4)2SO4，Ca(NO3)2，蛋白胨和胰蛋白胨等不同氮源对该菌株生长的影响情况，结果表明：酵母膏为其最佳碳源，蛋白胨为其最佳氮源。

The main reason is the uncommensurate contact between nanotube's crystal orientation and diamond's crystal orientation.

碳纳米管在金刚石基底以及氩基底上滑动滑动时，碳纳米管受到的摩擦力产生了明显的跃动现象，我们认为微观状态下，上、下表面间的晶格随着滑移而导致的相对位置变化是产生跃动现象的根本原因。

Comparison was synthesized from undecylenic acid and iso-propyl alcohol over HPWA-SBA-15. Comparison was made among different catalysts, and influence of composition and repeated use of the catalyst were investigated.

将该催化剂用於催化以十一碳烯与异丙醇为原料合成十一碳烯酸异丙酯，进行了不同催化剂化剂的对比实验以及催化剂组成和重复使用的考察。

The morphologies and purity of CNTs obtained at different temperatures in the range of 700℃-850℃ were investigated. At the optimal decomposition temperature 770℃ the pure product shows uniform diameter, small curvature and high yield. The more important thing is that there is no unremovable oxide support in the products, which represent the excellent properties of MCNTs.

发现在最佳裂解温度770℃下制备的多壁碳纳米管直径分布均匀、曲率小、纯净、产率高，更重要的是不具有难处理的氧化物（如Al2O3）载体，充分体现了碳纳米管作为载体的优越性。

Yongkang Hefa Tools Co.,Ltd.is a manufacturcr specializing in producing Auxiliary Air valves and carbon canisters of motorcycle,leisure vehicle,universal gasoline engine and automobile with Japanese technologies.it has obtained ISO9001:2000 certification and has several patents such as unspillable reed valve,combined gulp cylinder head ,ctc.or company is located in Baiyun Industry Area,Yongkang,a city of hardware in China with comfortable environment and convenient transportation With the first-class production ﹠ test equipment and abundant test methods,we have already gained the ability to establish a complete process line from rough machining to entire assembly.

永康市合发工具有限公司是一家专业生产摩托车、休闲运动车、通用汽油机、汽车用二次空气阀总成、碳罐的企业。公司引进了日本技术，。。。参考价格/报价： 0元/只永康市合发工具有限公司是一家专业生产摩托车、休闲运动车、通用汽油机、汽车用二次空气阀总成、碳罐的企业。公司引进了日本技术，通过 ISO ：9001：2000国际质量管理体系认证，并且拥有多项专利技术，如：无泄漏簧片阀，连体补气缸头等，具备年产二次空气阀200万套的能力。

The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.

该合成路线与文献方法相比，反应条件较温和，也缩短了反应时间；(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性，取得了较好的结果（差向异构体比为80：20，产率95％左右）；(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件；(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应，控制反应条件，可使反应中消旋化减小到最小的程度。

Low carbon is the times tidal current , China is to Great Power having sense of responsibility , Chinese nation enterprise is also to enterprise having sense of responsibility , ought to be to guide person and to trample on an untonsured monk have the sense of responsibility , low carbon life-style to the earth and human being.

低碳是时代的潮流，中国是有责任心的大国，中国的民族企业也是有责任心的企业，应该是对地球和人类有责任感、低碳生活方式的引领者和践行者。

GC/MS the law separates separately using the gas chromatography - mass spectrum, analyzes in the yellow croaker fish flesh to include the massive unsaturated fatty acid, confirmed the chemical composition, is mainly the vaccenic acid, the octadecenic acid and so on

利用气相色谱-质谱法分别分离，分析出黄花鱼鱼肉中含有大量的不饱和脂肪酸，确认出种化学成分，主要是十八碳二烯酸、十八碳烯酸等

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。